7557 lines
246 KiB
C
7557 lines
246 KiB
C
/* ----------------------------------------------------------------------
|
|
* Copyright (C) 2010-2015 ARM Limited. All rights reserved.
|
|
*
|
|
* $Date: 19. March 2015
|
|
* $Revision: V.1.4.5
|
|
*
|
|
* Project: CMSIS DSP Library
|
|
* Title: arm_math.h
|
|
*
|
|
* Description: Public header file for CMSIS DSP Library
|
|
*
|
|
* Target Processor: Cortex-M7/Cortex-M4/Cortex-M3/Cortex-M0
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* - Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* - Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* - Neither the name of ARM LIMITED nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this
|
|
* software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
* -------------------------------------------------------------------- */
|
|
|
|
/**
|
|
\mainpage CMSIS DSP Software Library
|
|
*
|
|
* Introduction
|
|
* ------------
|
|
*
|
|
* This user manual describes the CMSIS DSP software library,
|
|
* a suite of common signal processing functions for use on Cortex-M processor based devices.
|
|
*
|
|
* The library is divided into a number of functions each covering a specific category:
|
|
* - Basic math functions
|
|
* - Fast math functions
|
|
* - Complex math functions
|
|
* - Filters
|
|
* - Matrix functions
|
|
* - Transforms
|
|
* - Motor control functions
|
|
* - Statistical functions
|
|
* - Support functions
|
|
* - Interpolation functions
|
|
*
|
|
* The library has separate functions for operating on 8-bit integers, 16-bit integers,
|
|
* 32-bit integer and 32-bit floating-point values.
|
|
*
|
|
* Using the Library
|
|
* ------------
|
|
*
|
|
* The library installer contains prebuilt versions of the libraries in the <code>Lib</code> folder.
|
|
* - arm_cortexM7lfdp_math.lib (Little endian and Double Precision Floating Point Unit on Cortex-M7)
|
|
* - arm_cortexM7bfdp_math.lib (Big endian and Double Precision Floating Point Unit on Cortex-M7)
|
|
* - arm_cortexM7lfsp_math.lib (Little endian and Single Precision Floating Point Unit on Cortex-M7)
|
|
* - arm_cortexM7bfsp_math.lib (Big endian and Single Precision Floating Point Unit on Cortex-M7)
|
|
* - arm_cortexM7l_math.lib (Little endian on Cortex-M7)
|
|
* - arm_cortexM7b_math.lib (Big endian on Cortex-M7)
|
|
* - arm_cortexM4lf_math.lib (Little endian and Floating Point Unit on Cortex-M4)
|
|
* - arm_cortexM4bf_math.lib (Big endian and Floating Point Unit on Cortex-M4)
|
|
* - arm_cortexM4l_math.lib (Little endian on Cortex-M4)
|
|
* - arm_cortexM4b_math.lib (Big endian on Cortex-M4)
|
|
* - arm_cortexM3l_math.lib (Little endian on Cortex-M3)
|
|
* - arm_cortexM3b_math.lib (Big endian on Cortex-M3)
|
|
* - arm_cortexM0l_math.lib (Little endian on Cortex-M0 / CortexM0+)
|
|
* - arm_cortexM0b_math.lib (Big endian on Cortex-M0 / CortexM0+)
|
|
*
|
|
* The library functions are declared in the public file <code>arm_math.h</code> which is placed in the <code>Include</code> folder.
|
|
* Simply include this file and link the appropriate library in the application and begin calling the library functions. The Library supports single
|
|
* public header file <code> arm_math.h</code> for Cortex-M7/M4/M3/M0/M0+ with little endian and big endian. Same header file will be used for floating point unit(FPU) variants.
|
|
* Define the appropriate pre processor MACRO ARM_MATH_CM7 or ARM_MATH_CM4 or ARM_MATH_CM3 or
|
|
* ARM_MATH_CM0 or ARM_MATH_CM0PLUS depending on the target processor in the application.
|
|
*
|
|
* Examples
|
|
* --------
|
|
*
|
|
* The library ships with a number of examples which demonstrate how to use the library functions.
|
|
*
|
|
* Toolchain Support
|
|
* ------------
|
|
*
|
|
* The library has been developed and tested with MDK-ARM version 5.14.0.0
|
|
* The library is being tested in GCC and IAR toolchains and updates on this activity will be made available shortly.
|
|
*
|
|
* Building the Library
|
|
* ------------
|
|
*
|
|
* The library installer contains a project file to re build libraries on MDK-ARM Tool chain in the <code>CMSIS\\DSP_Lib\\Source\\ARM</code> folder.
|
|
* - arm_cortexM_math.uvprojx
|
|
*
|
|
*
|
|
* The libraries can be built by opening the arm_cortexM_math.uvprojx project in MDK-ARM, selecting a specific target, and defining the optional pre processor MACROs detailed above.
|
|
*
|
|
* Pre-processor Macros
|
|
* ------------
|
|
*
|
|
* Each library project have differant pre-processor macros.
|
|
*
|
|
* - UNALIGNED_SUPPORT_DISABLE:
|
|
*
|
|
* Define macro UNALIGNED_SUPPORT_DISABLE, If the silicon does not support unaligned memory access
|
|
*
|
|
* - ARM_MATH_BIG_ENDIAN:
|
|
*
|
|
* Define macro ARM_MATH_BIG_ENDIAN to build the library for big endian targets. By default library builds for little endian targets.
|
|
*
|
|
* - ARM_MATH_MATRIX_CHECK:
|
|
*
|
|
* Define macro ARM_MATH_MATRIX_CHECK for checking on the input and output sizes of matrices
|
|
*
|
|
* - ARM_MATH_ROUNDING:
|
|
*
|
|
* Define macro ARM_MATH_ROUNDING for rounding on support functions
|
|
*
|
|
* - ARM_MATH_CMx:
|
|
*
|
|
* Define macro ARM_MATH_CM4 for building the library on Cortex-M4 target, ARM_MATH_CM3 for building library on Cortex-M3 target
|
|
* and ARM_MATH_CM0 for building library on Cortex-M0 target, ARM_MATH_CM0PLUS for building library on Cortex-M0+ target, and
|
|
* ARM_MATH_CM7 for building the library on cortex-M7.
|
|
*
|
|
* - __FPU_PRESENT:
|
|
*
|
|
* Initialize macro __FPU_PRESENT = 1 when building on FPU supported Targets. Enable this macro for M4bf and M4lf libraries
|
|
*
|
|
* <hr>
|
|
* CMSIS-DSP in ARM::CMSIS Pack
|
|
* -----------------------------
|
|
*
|
|
* The following files relevant to CMSIS-DSP are present in the <b>ARM::CMSIS</b> Pack directories:
|
|
* |File/Folder |Content |
|
|
* |------------------------------|------------------------------------------------------------------------|
|
|
* |\b CMSIS\\Documentation\\DSP | This documentation |
|
|
* |\b CMSIS\\DSP_Lib | Software license agreement (license.txt) |
|
|
* |\b CMSIS\\DSP_Lib\\Examples | Example projects demonstrating the usage of the library functions |
|
|
* |\b CMSIS\\DSP_Lib\\Source | Source files for rebuilding the library |
|
|
*
|
|
* <hr>
|
|
* Revision History of CMSIS-DSP
|
|
* ------------
|
|
* Please refer to \ref ChangeLog_pg.
|
|
*
|
|
* Copyright Notice
|
|
* ------------
|
|
*
|
|
* Copyright (C) 2010-2015 ARM Limited. All rights reserved.
|
|
*/
|
|
|
|
|
|
/**
|
|
* @defgroup groupMath Basic Math Functions
|
|
*/
|
|
|
|
/**
|
|
* @defgroup groupFastMath Fast Math Functions
|
|
* This set of functions provides a fast approximation to sine, cosine, and square root.
|
|
* As compared to most of the other functions in the CMSIS math library, the fast math functions
|
|
* operate on individual values and not arrays.
|
|
* There are separate functions for Q15, Q31, and floating-point data.
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* @defgroup groupCmplxMath Complex Math Functions
|
|
* This set of functions operates on complex data vectors.
|
|
* The data in the complex arrays is stored in an interleaved fashion
|
|
* (real, imag, real, imag, ...).
|
|
* In the API functions, the number of samples in a complex array refers
|
|
* to the number of complex values; the array contains twice this number of
|
|
* real values.
|
|
*/
|
|
|
|
/**
|
|
* @defgroup groupFilters Filtering Functions
|
|
*/
|
|
|
|
/**
|
|
* @defgroup groupMatrix Matrix Functions
|
|
*
|
|
* This set of functions provides basic matrix math operations.
|
|
* The functions operate on matrix data structures. For example,
|
|
* the type
|
|
* definition for the floating-point matrix structure is shown
|
|
* below:
|
|
* <pre>
|
|
* typedef struct
|
|
* {
|
|
* uint16_t numRows; // number of rows of the matrix.
|
|
* uint16_t numCols; // number of columns of the matrix.
|
|
* float32_t *pData; // points to the data of the matrix.
|
|
* } arm_matrix_instance_f32;
|
|
* </pre>
|
|
* There are similar definitions for Q15 and Q31 data types.
|
|
*
|
|
* The structure specifies the size of the matrix and then points to
|
|
* an array of data. The array is of size <code>numRows X numCols</code>
|
|
* and the values are arranged in row order. That is, the
|
|
* matrix element (i, j) is stored at:
|
|
* <pre>
|
|
* pData[i*numCols + j]
|
|
* </pre>
|
|
*
|
|
* \par Init Functions
|
|
* There is an associated initialization function for each type of matrix
|
|
* data structure.
|
|
* The initialization function sets the values of the internal structure fields.
|
|
* Refer to the function <code>arm_mat_init_f32()</code>, <code>arm_mat_init_q31()</code>
|
|
* and <code>arm_mat_init_q15()</code> for floating-point, Q31 and Q15 types, respectively.
|
|
*
|
|
* \par
|
|
* Use of the initialization function is optional. However, if initialization function is used
|
|
* then the instance structure cannot be placed into a const data section.
|
|
* To place the instance structure in a const data
|
|
* section, manually initialize the data structure. For example:
|
|
* <pre>
|
|
* <code>arm_matrix_instance_f32 S = {nRows, nColumns, pData};</code>
|
|
* <code>arm_matrix_instance_q31 S = {nRows, nColumns, pData};</code>
|
|
* <code>arm_matrix_instance_q15 S = {nRows, nColumns, pData};</code>
|
|
* </pre>
|
|
* where <code>nRows</code> specifies the number of rows, <code>nColumns</code>
|
|
* specifies the number of columns, and <code>pData</code> points to the
|
|
* data array.
|
|
*
|
|
* \par Size Checking
|
|
* By default all of the matrix functions perform size checking on the input and
|
|
* output matrices. For example, the matrix addition function verifies that the
|
|
* two input matrices and the output matrix all have the same number of rows and
|
|
* columns. If the size check fails the functions return:
|
|
* <pre>
|
|
* ARM_MATH_SIZE_MISMATCH
|
|
* </pre>
|
|
* Otherwise the functions return
|
|
* <pre>
|
|
* ARM_MATH_SUCCESS
|
|
* </pre>
|
|
* There is some overhead associated with this matrix size checking.
|
|
* The matrix size checking is enabled via the \#define
|
|
* <pre>
|
|
* ARM_MATH_MATRIX_CHECK
|
|
* </pre>
|
|
* within the library project settings. By default this macro is defined
|
|
* and size checking is enabled. By changing the project settings and
|
|
* undefining this macro size checking is eliminated and the functions
|
|
* run a bit faster. With size checking disabled the functions always
|
|
* return <code>ARM_MATH_SUCCESS</code>.
|
|
*/
|
|
|
|
/**
|
|
* @defgroup groupTransforms Transform Functions
|
|
*/
|
|
|
|
/**
|
|
* @defgroup groupController Controller Functions
|
|
*/
|
|
|
|
/**
|
|
* @defgroup groupStats Statistics Functions
|
|
*/
|
|
/**
|
|
* @defgroup groupSupport Support Functions
|
|
*/
|
|
|
|
/**
|
|
* @defgroup groupInterpolation Interpolation Functions
|
|
* These functions perform 1- and 2-dimensional interpolation of data.
|
|
* Linear interpolation is used for 1-dimensional data and
|
|
* bilinear interpolation is used for 2-dimensional data.
|
|
*/
|
|
|
|
/**
|
|
* @defgroup groupExamples Examples
|
|
*/
|
|
#ifndef _ARM_MATH_H
|
|
#define _ARM_MATH_H
|
|
|
|
#define __CMSIS_GENERIC /* disable NVIC and Systick functions */
|
|
|
|
#if defined(ARM_MATH_CM7)
|
|
#include "core_cm7.h"
|
|
#elif defined (ARM_MATH_CM4)
|
|
#include "core_cm4.h"
|
|
#elif defined (ARM_MATH_CM3)
|
|
#include "core_cm3.h"
|
|
#elif defined (ARM_MATH_CM0)
|
|
#include "core_cm0.h"
|
|
#define ARM_MATH_CM0_FAMILY
|
|
#elif defined (ARM_MATH_CM0PLUS)
|
|
#include "core_cm0plus.h"
|
|
#define ARM_MATH_CM0_FAMILY
|
|
#else
|
|
#error "Define according the used Cortex core ARM_MATH_CM7, ARM_MATH_CM4, ARM_MATH_CM3, ARM_MATH_CM0PLUS or ARM_MATH_CM0"
|
|
#endif
|
|
|
|
#undef __CMSIS_GENERIC /* enable NVIC and Systick functions */
|
|
#include "string.h"
|
|
#include "math.h"
|
|
#ifdef __cplusplus
|
|
extern "C"
|
|
{
|
|
#endif
|
|
|
|
|
|
/**
|
|
* @brief Macros required for reciprocal calculation in Normalized LMS
|
|
*/
|
|
|
|
#define DELTA_Q31 (0x100)
|
|
#define DELTA_Q15 0x5
|
|
#define INDEX_MASK 0x0000003F
|
|
#ifndef PI
|
|
#define PI 3.14159265358979f
|
|
#endif
|
|
|
|
/**
|
|
* @brief Macros required for SINE and COSINE Fast math approximations
|
|
*/
|
|
|
|
#define FAST_MATH_TABLE_SIZE 512
|
|
#define FAST_MATH_Q31_SHIFT (32 - 10)
|
|
#define FAST_MATH_Q15_SHIFT (16 - 10)
|
|
#define CONTROLLER_Q31_SHIFT (32 - 9)
|
|
#define TABLE_SIZE 256
|
|
#define TABLE_SPACING_Q31 0x400000
|
|
#define TABLE_SPACING_Q15 0x80
|
|
|
|
/**
|
|
* @brief Macros required for SINE and COSINE Controller functions
|
|
*/
|
|
/* 1.31(q31) Fixed value of 2/360 */
|
|
/* -1 to +1 is divided into 360 values so total spacing is (2/360) */
|
|
#define INPUT_SPACING 0xB60B61
|
|
|
|
/**
|
|
* @brief Macro for Unaligned Support
|
|
*/
|
|
#ifndef UNALIGNED_SUPPORT_DISABLE
|
|
#define ALIGN4
|
|
#else
|
|
#if defined (__GNUC__)
|
|
#define ALIGN4 __attribute__((aligned(4)))
|
|
#else
|
|
#define ALIGN4 __align(4)
|
|
#endif
|
|
#endif /* #ifndef UNALIGNED_SUPPORT_DISABLE */
|
|
|
|
/**
|
|
* @brief Error status returned by some functions in the library.
|
|
*/
|
|
|
|
typedef enum
|
|
{
|
|
ARM_MATH_SUCCESS = 0, /**< No error */
|
|
ARM_MATH_ARGUMENT_ERROR = -1, /**< One or more arguments are incorrect */
|
|
ARM_MATH_LENGTH_ERROR = -2, /**< Length of data buffer is incorrect */
|
|
ARM_MATH_SIZE_MISMATCH = -3, /**< Size of matrices is not compatible with the operation. */
|
|
ARM_MATH_NANINF = -4, /**< Not-a-number (NaN) or infinity is generated */
|
|
ARM_MATH_SINGULAR = -5, /**< Generated by matrix inversion if the input matrix is singular and cannot be inverted. */
|
|
ARM_MATH_TEST_FAILURE = -6 /**< Test Failed */
|
|
} arm_status;
|
|
|
|
/**
|
|
* @brief 8-bit fractional data type in 1.7 format.
|
|
*/
|
|
typedef int8_t q7_t;
|
|
|
|
/**
|
|
* @brief 16-bit fractional data type in 1.15 format.
|
|
*/
|
|
typedef int16_t q15_t;
|
|
|
|
/**
|
|
* @brief 32-bit fractional data type in 1.31 format.
|
|
*/
|
|
typedef int32_t q31_t;
|
|
|
|
/**
|
|
* @brief 64-bit fractional data type in 1.63 format.
|
|
*/
|
|
typedef int64_t q63_t;
|
|
|
|
/**
|
|
* @brief 32-bit floating-point type definition.
|
|
*/
|
|
typedef float float32_t;
|
|
|
|
/**
|
|
* @brief 64-bit floating-point type definition.
|
|
*/
|
|
typedef double float64_t;
|
|
|
|
/**
|
|
* @brief definition to read/write two 16 bit values.
|
|
*/
|
|
#if defined __CC_ARM
|
|
#define __SIMD32_TYPE int32_t __packed
|
|
#define CMSIS_UNUSED __attribute__((unused))
|
|
#elif defined __ICCARM__
|
|
#define __SIMD32_TYPE int32_t __packed
|
|
#define CMSIS_UNUSED
|
|
#elif defined __GNUC__
|
|
#define __SIMD32_TYPE int32_t
|
|
#define CMSIS_UNUSED __attribute__((unused))
|
|
#elif defined __CSMC__ /* Cosmic */
|
|
#define __SIMD32_TYPE int32_t
|
|
#define CMSIS_UNUSED
|
|
#elif defined __TASKING__
|
|
#define __SIMD32_TYPE __unaligned int32_t
|
|
#define CMSIS_UNUSED
|
|
#else
|
|
#error Unknown compiler
|
|
#endif
|
|
|
|
#define __SIMD32(addr) (*(__SIMD32_TYPE **) & (addr))
|
|
#define __SIMD32_CONST(addr) ((__SIMD32_TYPE *)(addr))
|
|
|
|
#define _SIMD32_OFFSET(addr) (*(__SIMD32_TYPE *) (addr))
|
|
|
|
#define __SIMD64(addr) (*(int64_t **) & (addr))
|
|
|
|
#if defined (ARM_MATH_CM3) || defined (ARM_MATH_CM0_FAMILY)
|
|
/**
|
|
* @brief definition to pack two 16 bit values.
|
|
*/
|
|
#define __PKHBT(ARG1, ARG2, ARG3) ( (((int32_t)(ARG1) << 0) & (int32_t)0x0000FFFF) | \
|
|
(((int32_t)(ARG2) << ARG3) & (int32_t)0xFFFF0000) )
|
|
#define __PKHTB(ARG1, ARG2, ARG3) ( (((int32_t)(ARG1) << 0) & (int32_t)0xFFFF0000) | \
|
|
(((int32_t)(ARG2) >> ARG3) & (int32_t)0x0000FFFF) )
|
|
|
|
#endif
|
|
|
|
|
|
/**
|
|
* @brief definition to pack four 8 bit values.
|
|
*/
|
|
#ifndef ARM_MATH_BIG_ENDIAN
|
|
|
|
#define __PACKq7(v0,v1,v2,v3) ( (((int32_t)(v0) << 0) & (int32_t)0x000000FF) | \
|
|
(((int32_t)(v1) << 8) & (int32_t)0x0000FF00) | \
|
|
(((int32_t)(v2) << 16) & (int32_t)0x00FF0000) | \
|
|
(((int32_t)(v3) << 24) & (int32_t)0xFF000000) )
|
|
#else
|
|
|
|
#define __PACKq7(v0,v1,v2,v3) ( (((int32_t)(v3) << 0) & (int32_t)0x000000FF) | \
|
|
(((int32_t)(v2) << 8) & (int32_t)0x0000FF00) | \
|
|
(((int32_t)(v1) << 16) & (int32_t)0x00FF0000) | \
|
|
(((int32_t)(v0) << 24) & (int32_t)0xFF000000) )
|
|
|
|
#endif
|
|
|
|
|
|
/**
|
|
* @brief Clips Q63 to Q31 values.
|
|
*/
|
|
static __INLINE q31_t clip_q63_to_q31(
|
|
q63_t x)
|
|
{
|
|
return ((q31_t) (x >> 32) != ((q31_t) x >> 31)) ?
|
|
((0x7FFFFFFF ^ ((q31_t) (x >> 63)))) : (q31_t) x;
|
|
}
|
|
|
|
/**
|
|
* @brief Clips Q63 to Q15 values.
|
|
*/
|
|
static __INLINE q15_t clip_q63_to_q15(
|
|
q63_t x)
|
|
{
|
|
return ((q31_t) (x >> 32) != ((q31_t) x >> 31)) ?
|
|
((0x7FFF ^ ((q15_t) (x >> 63)))) : (q15_t) (x >> 15);
|
|
}
|
|
|
|
/**
|
|
* @brief Clips Q31 to Q7 values.
|
|
*/
|
|
static __INLINE q7_t clip_q31_to_q7(
|
|
q31_t x)
|
|
{
|
|
return ((q31_t) (x >> 24) != ((q31_t) x >> 23)) ?
|
|
((0x7F ^ ((q7_t) (x >> 31)))) : (q7_t) x;
|
|
}
|
|
|
|
/**
|
|
* @brief Clips Q31 to Q15 values.
|
|
*/
|
|
static __INLINE q15_t clip_q31_to_q15(
|
|
q31_t x)
|
|
{
|
|
return ((q31_t) (x >> 16) != ((q31_t) x >> 15)) ?
|
|
((0x7FFF ^ ((q15_t) (x >> 31)))) : (q15_t) x;
|
|
}
|
|
|
|
/**
|
|
* @brief Multiplies 32 X 64 and returns 32 bit result in 2.30 format.
|
|
*/
|
|
|
|
static __INLINE q63_t mult32x64(
|
|
q63_t x,
|
|
q31_t y)
|
|
{
|
|
return ((((q63_t) (x & 0x00000000FFFFFFFF) * y) >> 32) +
|
|
(((q63_t) (x >> 32) * y)));
|
|
}
|
|
|
|
|
|
//#if defined (ARM_MATH_CM0_FAMILY) && defined ( __CC_ARM )
|
|
//#define __CLZ __clz
|
|
//#endif
|
|
|
|
//note: function can be removed when all toolchain support __CLZ for Cortex-M0
|
|
#if defined (ARM_MATH_CM0_FAMILY) && ((defined (__ICCARM__)) )
|
|
|
|
static __INLINE uint32_t __CLZ(
|
|
q31_t data);
|
|
|
|
|
|
static __INLINE uint32_t __CLZ(
|
|
q31_t data)
|
|
{
|
|
uint32_t count = 0;
|
|
uint32_t mask = 0x80000000;
|
|
|
|
while((data & mask) == 0)
|
|
{
|
|
count += 1u;
|
|
mask = mask >> 1u;
|
|
}
|
|
|
|
return (count);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
/**
|
|
* @brief Function to Calculates 1/in (reciprocal) value of Q31 Data type.
|
|
*/
|
|
|
|
static __INLINE uint32_t arm_recip_q31(
|
|
q31_t in,
|
|
q31_t * dst,
|
|
q31_t * pRecipTable)
|
|
{
|
|
|
|
uint32_t out, tempVal;
|
|
uint32_t index, i;
|
|
uint32_t signBits;
|
|
|
|
if(in > 0)
|
|
{
|
|
signBits = __CLZ(in) - 1;
|
|
}
|
|
else
|
|
{
|
|
signBits = __CLZ(-in) - 1;
|
|
}
|
|
|
|
/* Convert input sample to 1.31 format */
|
|
in = in << signBits;
|
|
|
|
/* calculation of index for initial approximated Val */
|
|
index = (uint32_t) (in >> 24u);
|
|
index = (index & INDEX_MASK);
|
|
|
|
/* 1.31 with exp 1 */
|
|
out = pRecipTable[index];
|
|
|
|
/* calculation of reciprocal value */
|
|
/* running approximation for two iterations */
|
|
for (i = 0u; i < 2u; i++)
|
|
{
|
|
tempVal = (q31_t) (((q63_t) in * out) >> 31u);
|
|
tempVal = 0x7FFFFFFF - tempVal;
|
|
/* 1.31 with exp 1 */
|
|
//out = (q31_t) (((q63_t) out * tempVal) >> 30u);
|
|
out = (q31_t) clip_q63_to_q31(((q63_t) out * tempVal) >> 30u);
|
|
}
|
|
|
|
/* write output */
|
|
*dst = out;
|
|
|
|
/* return num of signbits of out = 1/in value */
|
|
return (signBits + 1u);
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Function to Calculates 1/in (reciprocal) value of Q15 Data type.
|
|
*/
|
|
static __INLINE uint32_t arm_recip_q15(
|
|
q15_t in,
|
|
q15_t * dst,
|
|
q15_t * pRecipTable)
|
|
{
|
|
|
|
uint32_t out = 0, tempVal = 0;
|
|
uint32_t index = 0, i = 0;
|
|
uint32_t signBits = 0;
|
|
|
|
if(in > 0)
|
|
{
|
|
signBits = __CLZ(in) - 17;
|
|
}
|
|
else
|
|
{
|
|
signBits = __CLZ(-in) - 17;
|
|
}
|
|
|
|
/* Convert input sample to 1.15 format */
|
|
in = in << signBits;
|
|
|
|
/* calculation of index for initial approximated Val */
|
|
index = in >> 8;
|
|
index = (index & INDEX_MASK);
|
|
|
|
/* 1.15 with exp 1 */
|
|
out = pRecipTable[index];
|
|
|
|
/* calculation of reciprocal value */
|
|
/* running approximation for two iterations */
|
|
for (i = 0; i < 2; i++)
|
|
{
|
|
tempVal = (q15_t) (((q31_t) in * out) >> 15);
|
|
tempVal = 0x7FFF - tempVal;
|
|
/* 1.15 with exp 1 */
|
|
out = (q15_t) (((q31_t) out * tempVal) >> 14);
|
|
}
|
|
|
|
/* write output */
|
|
*dst = out;
|
|
|
|
/* return num of signbits of out = 1/in value */
|
|
return (signBits + 1);
|
|
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined intrinisic function for only M0 processors
|
|
*/
|
|
#if defined(ARM_MATH_CM0_FAMILY)
|
|
|
|
static __INLINE q31_t __SSAT(
|
|
q31_t x,
|
|
uint32_t y)
|
|
{
|
|
int32_t posMax, negMin;
|
|
uint32_t i;
|
|
|
|
posMax = 1;
|
|
for (i = 0; i < (y - 1); i++)
|
|
{
|
|
posMax = posMax * 2;
|
|
}
|
|
|
|
if(x > 0)
|
|
{
|
|
posMax = (posMax - 1);
|
|
|
|
if(x > posMax)
|
|
{
|
|
x = posMax;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
negMin = -posMax;
|
|
|
|
if(x < negMin)
|
|
{
|
|
x = negMin;
|
|
}
|
|
}
|
|
return (x);
|
|
|
|
|
|
}
|
|
|
|
#endif /* end of ARM_MATH_CM0_FAMILY */
|
|
|
|
|
|
|
|
/*
|
|
* @brief C custom defined intrinsic function for M3 and M0 processors
|
|
*/
|
|
#if defined (ARM_MATH_CM3) || defined (ARM_MATH_CM0_FAMILY)
|
|
|
|
/*
|
|
* @brief C custom defined QADD8 for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __QADD8(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
|
|
q31_t sum;
|
|
q7_t r, s, t, u;
|
|
|
|
r = (q7_t) x;
|
|
s = (q7_t) y;
|
|
|
|
r = __SSAT((q31_t) (r + s), 8);
|
|
s = __SSAT(((q31_t) (((x << 16) >> 24) + ((y << 16) >> 24))), 8);
|
|
t = __SSAT(((q31_t) (((x << 8) >> 24) + ((y << 8) >> 24))), 8);
|
|
u = __SSAT(((q31_t) ((x >> 24) + (y >> 24))), 8);
|
|
|
|
sum =
|
|
(((q31_t) u << 24) & 0xFF000000) | (((q31_t) t << 16) & 0x00FF0000) |
|
|
(((q31_t) s << 8) & 0x0000FF00) | (r & 0x000000FF);
|
|
|
|
return sum;
|
|
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined QSUB8 for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __QSUB8(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
|
|
q31_t sum;
|
|
q31_t r, s, t, u;
|
|
|
|
r = (q7_t) x;
|
|
s = (q7_t) y;
|
|
|
|
r = __SSAT((r - s), 8);
|
|
s = __SSAT(((q31_t) (((x << 16) >> 24) - ((y << 16) >> 24))), 8) << 8;
|
|
t = __SSAT(((q31_t) (((x << 8) >> 24) - ((y << 8) >> 24))), 8) << 16;
|
|
u = __SSAT(((q31_t) ((x >> 24) - (y >> 24))), 8) << 24;
|
|
|
|
sum =
|
|
(u & 0xFF000000) | (t & 0x00FF0000) | (s & 0x0000FF00) | (r &
|
|
0x000000FF);
|
|
|
|
return sum;
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined QADD16 for M3 and M0 processors
|
|
*/
|
|
|
|
/*
|
|
* @brief C custom defined QADD16 for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __QADD16(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
|
|
q31_t sum;
|
|
q31_t r, s;
|
|
|
|
r = (q15_t) x;
|
|
s = (q15_t) y;
|
|
|
|
r = __SSAT(r + s, 16);
|
|
s = __SSAT(((q31_t) ((x >> 16) + (y >> 16))), 16) << 16;
|
|
|
|
sum = (s & 0xFFFF0000) | (r & 0x0000FFFF);
|
|
|
|
return sum;
|
|
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SHADD16 for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __SHADD16(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
|
|
q31_t sum;
|
|
q31_t r, s;
|
|
|
|
r = (q15_t) x;
|
|
s = (q15_t) y;
|
|
|
|
r = ((r >> 1) + (s >> 1));
|
|
s = ((q31_t) ((x >> 17) + (y >> 17))) << 16;
|
|
|
|
sum = (s & 0xFFFF0000) | (r & 0x0000FFFF);
|
|
|
|
return sum;
|
|
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined QSUB16 for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __QSUB16(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
|
|
q31_t sum;
|
|
q31_t r, s;
|
|
|
|
r = (q15_t) x;
|
|
s = (q15_t) y;
|
|
|
|
r = __SSAT(r - s, 16);
|
|
s = __SSAT(((q31_t) ((x >> 16) - (y >> 16))), 16) << 16;
|
|
|
|
sum = (s & 0xFFFF0000) | (r & 0x0000FFFF);
|
|
|
|
return sum;
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SHSUB16 for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __SHSUB16(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
|
|
q31_t diff;
|
|
q31_t r, s;
|
|
|
|
r = (q15_t) x;
|
|
s = (q15_t) y;
|
|
|
|
r = ((r >> 1) - (s >> 1));
|
|
s = (((x >> 17) - (y >> 17)) << 16);
|
|
|
|
diff = (s & 0xFFFF0000) | (r & 0x0000FFFF);
|
|
|
|
return diff;
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined QASX for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __QASX(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
|
|
q31_t sum = 0;
|
|
|
|
sum =
|
|
((sum +
|
|
clip_q31_to_q15((q31_t) ((q15_t) (x >> 16) + (q15_t) y))) << 16) +
|
|
clip_q31_to_q15((q31_t) ((q15_t) x - (q15_t) (y >> 16)));
|
|
|
|
return sum;
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SHASX for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __SHASX(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
|
|
q31_t sum;
|
|
q31_t r, s;
|
|
|
|
r = (q15_t) x;
|
|
s = (q15_t) y;
|
|
|
|
r = ((r >> 1) - (y >> 17));
|
|
s = (((x >> 17) + (s >> 1)) << 16);
|
|
|
|
sum = (s & 0xFFFF0000) | (r & 0x0000FFFF);
|
|
|
|
return sum;
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined QSAX for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __QSAX(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
|
|
q31_t sum = 0;
|
|
|
|
sum =
|
|
((sum +
|
|
clip_q31_to_q15((q31_t) ((q15_t) (x >> 16) - (q15_t) y))) << 16) +
|
|
clip_q31_to_q15((q31_t) ((q15_t) x + (q15_t) (y >> 16)));
|
|
|
|
return sum;
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SHSAX for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __SHSAX(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
|
|
q31_t sum;
|
|
q31_t r, s;
|
|
|
|
r = (q15_t) x;
|
|
s = (q15_t) y;
|
|
|
|
r = ((r >> 1) + (y >> 17));
|
|
s = (((x >> 17) - (s >> 1)) << 16);
|
|
|
|
sum = (s & 0xFFFF0000) | (r & 0x0000FFFF);
|
|
|
|
return sum;
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SMUSDX for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __SMUSDX(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
|
|
return ((q31_t) (((q15_t) x * (q15_t) (y >> 16)) -
|
|
((q15_t) (x >> 16) * (q15_t) y)));
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SMUADX for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __SMUADX(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
|
|
return ((q31_t) (((q15_t) x * (q15_t) (y >> 16)) +
|
|
((q15_t) (x >> 16) * (q15_t) y)));
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined QADD for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __QADD(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
return clip_q63_to_q31((q63_t) x + y);
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined QSUB for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __QSUB(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
return clip_q63_to_q31((q63_t) x - y);
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SMLAD for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __SMLAD(
|
|
q31_t x,
|
|
q31_t y,
|
|
q31_t sum)
|
|
{
|
|
|
|
return (sum + ((q15_t) (x >> 16) * (q15_t) (y >> 16)) +
|
|
((q15_t) x * (q15_t) y));
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SMLADX for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __SMLADX(
|
|
q31_t x,
|
|
q31_t y,
|
|
q31_t sum)
|
|
{
|
|
|
|
return (sum + ((q15_t) (x >> 16) * (q15_t) (y)) +
|
|
((q15_t) x * (q15_t) (y >> 16)));
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SMLSDX for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __SMLSDX(
|
|
q31_t x,
|
|
q31_t y,
|
|
q31_t sum)
|
|
{
|
|
|
|
return (sum - ((q15_t) (x >> 16) * (q15_t) (y)) +
|
|
((q15_t) x * (q15_t) (y >> 16)));
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SMLALD for M3 and M0 processors
|
|
*/
|
|
static __INLINE q63_t __SMLALD(
|
|
q31_t x,
|
|
q31_t y,
|
|
q63_t sum)
|
|
{
|
|
|
|
return (sum + ((q15_t) (x >> 16) * (q15_t) (y >> 16)) +
|
|
((q15_t) x * (q15_t) y));
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SMLALDX for M3 and M0 processors
|
|
*/
|
|
static __INLINE q63_t __SMLALDX(
|
|
q31_t x,
|
|
q31_t y,
|
|
q63_t sum)
|
|
{
|
|
|
|
return (sum + ((q15_t) (x >> 16) * (q15_t) y)) +
|
|
((q15_t) x * (q15_t) (y >> 16));
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SMUAD for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __SMUAD(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
|
|
return (((x >> 16) * (y >> 16)) +
|
|
(((x << 16) >> 16) * ((y << 16) >> 16)));
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SMUSD for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __SMUSD(
|
|
q31_t x,
|
|
q31_t y)
|
|
{
|
|
|
|
return (-((x >> 16) * (y >> 16)) +
|
|
(((x << 16) >> 16) * ((y << 16) >> 16)));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined SXTB16 for M3 and M0 processors
|
|
*/
|
|
static __INLINE q31_t __SXTB16(
|
|
q31_t x)
|
|
{
|
|
|
|
return ((((x << 24) >> 24) & 0x0000FFFF) |
|
|
(((x << 8) >> 8) & 0xFFFF0000));
|
|
}
|
|
|
|
|
|
#endif /* defined (ARM_MATH_CM3) || defined (ARM_MATH_CM0_FAMILY) */
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q7 FIR filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of filter coefficients in the filter. */
|
|
q7_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
q7_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
} arm_fir_instance_q7;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 FIR filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of filter coefficients in the filter. */
|
|
q15_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
q15_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
} arm_fir_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 FIR filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of filter coefficients in the filter. */
|
|
q31_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
q31_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
} arm_fir_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point FIR filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of filter coefficients in the filter. */
|
|
float32_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
float32_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
} arm_fir_instance_f32;
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q7 FIR filter.
|
|
* @param[in] *S points to an instance of the Q7 FIR filter structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
void arm_fir_q7(
|
|
const arm_fir_instance_q7 * S,
|
|
q7_t * pSrc,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q7 FIR filter.
|
|
* @param[in,out] *S points to an instance of the Q7 FIR structure.
|
|
* @param[in] numTaps Number of filter coefficients in the filter.
|
|
* @param[in] *pCoeffs points to the filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] blockSize number of samples that are processed.
|
|
* @return none
|
|
*/
|
|
void arm_fir_init_q7(
|
|
arm_fir_instance_q7 * S,
|
|
uint16_t numTaps,
|
|
q7_t * pCoeffs,
|
|
q7_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 FIR filter.
|
|
* @param[in] *S points to an instance of the Q15 FIR structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
void arm_fir_q15(
|
|
const arm_fir_instance_q15 * S,
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the fast Q15 FIR filter for Cortex-M3 and Cortex-M4.
|
|
* @param[in] *S points to an instance of the Q15 FIR filter structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
void arm_fir_fast_q15(
|
|
const arm_fir_instance_q15 * S,
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 FIR filter.
|
|
* @param[in,out] *S points to an instance of the Q15 FIR filter structure.
|
|
* @param[in] numTaps Number of filter coefficients in the filter. Must be even and greater than or equal to 4.
|
|
* @param[in] *pCoeffs points to the filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] blockSize number of samples that are processed at a time.
|
|
* @return The function returns ARM_MATH_SUCCESS if initialization was successful or ARM_MATH_ARGUMENT_ERROR if
|
|
* <code>numTaps</code> is not a supported value.
|
|
*/
|
|
|
|
arm_status arm_fir_init_q15(
|
|
arm_fir_instance_q15 * S,
|
|
uint16_t numTaps,
|
|
q15_t * pCoeffs,
|
|
q15_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 FIR filter.
|
|
* @param[in] *S points to an instance of the Q31 FIR filter structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
void arm_fir_q31(
|
|
const arm_fir_instance_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the fast Q31 FIR filter for Cortex-M3 and Cortex-M4.
|
|
* @param[in] *S points to an instance of the Q31 FIR structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
void arm_fir_fast_q31(
|
|
const arm_fir_instance_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 FIR filter.
|
|
* @param[in,out] *S points to an instance of the Q31 FIR structure.
|
|
* @param[in] numTaps Number of filter coefficients in the filter.
|
|
* @param[in] *pCoeffs points to the filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] blockSize number of samples that are processed at a time.
|
|
* @return none.
|
|
*/
|
|
void arm_fir_init_q31(
|
|
arm_fir_instance_q31 * S,
|
|
uint16_t numTaps,
|
|
q31_t * pCoeffs,
|
|
q31_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point FIR filter.
|
|
* @param[in] *S points to an instance of the floating-point FIR structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
void arm_fir_f32(
|
|
const arm_fir_instance_f32 * S,
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point FIR filter.
|
|
* @param[in,out] *S points to an instance of the floating-point FIR filter structure.
|
|
* @param[in] numTaps Number of filter coefficients in the filter.
|
|
* @param[in] *pCoeffs points to the filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] blockSize number of samples that are processed at a time.
|
|
* @return none.
|
|
*/
|
|
void arm_fir_init_f32(
|
|
arm_fir_instance_f32 * S,
|
|
uint16_t numTaps,
|
|
float32_t * pCoeffs,
|
|
float32_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 Biquad cascade filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
int8_t numStages; /**< number of 2nd order stages in the filter. Overall order is 2*numStages. */
|
|
q15_t *pState; /**< Points to the array of state coefficients. The array is of length 4*numStages. */
|
|
q15_t *pCoeffs; /**< Points to the array of coefficients. The array is of length 5*numStages. */
|
|
int8_t postShift; /**< Additional shift, in bits, applied to each output sample. */
|
|
|
|
} arm_biquad_casd_df1_inst_q15;
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 Biquad cascade filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint32_t numStages; /**< number of 2nd order stages in the filter. Overall order is 2*numStages. */
|
|
q31_t *pState; /**< Points to the array of state coefficients. The array is of length 4*numStages. */
|
|
q31_t *pCoeffs; /**< Points to the array of coefficients. The array is of length 5*numStages. */
|
|
uint8_t postShift; /**< Additional shift, in bits, applied to each output sample. */
|
|
|
|
} arm_biquad_casd_df1_inst_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point Biquad cascade filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint32_t numStages; /**< number of 2nd order stages in the filter. Overall order is 2*numStages. */
|
|
float32_t *pState; /**< Points to the array of state coefficients. The array is of length 4*numStages. */
|
|
float32_t *pCoeffs; /**< Points to the array of coefficients. The array is of length 5*numStages. */
|
|
|
|
|
|
} arm_biquad_casd_df1_inst_f32;
|
|
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 Biquad cascade filter.
|
|
* @param[in] *S points to an instance of the Q15 Biquad cascade structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_biquad_cascade_df1_q15(
|
|
const arm_biquad_casd_df1_inst_q15 * S,
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 Biquad cascade filter.
|
|
* @param[in,out] *S points to an instance of the Q15 Biquad cascade structure.
|
|
* @param[in] numStages number of 2nd order stages in the filter.
|
|
* @param[in] *pCoeffs points to the filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] postShift Shift to be applied to the output. Varies according to the coefficients format
|
|
* @return none
|
|
*/
|
|
|
|
void arm_biquad_cascade_df1_init_q15(
|
|
arm_biquad_casd_df1_inst_q15 * S,
|
|
uint8_t numStages,
|
|
q15_t * pCoeffs,
|
|
q15_t * pState,
|
|
int8_t postShift);
|
|
|
|
|
|
/**
|
|
* @brief Fast but less precise processing function for the Q15 Biquad cascade filter for Cortex-M3 and Cortex-M4.
|
|
* @param[in] *S points to an instance of the Q15 Biquad cascade structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_biquad_cascade_df1_fast_q15(
|
|
const arm_biquad_casd_df1_inst_q15 * S,
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 Biquad cascade filter
|
|
* @param[in] *S points to an instance of the Q31 Biquad cascade structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_biquad_cascade_df1_q31(
|
|
const arm_biquad_casd_df1_inst_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Fast but less precise processing function for the Q31 Biquad cascade filter for Cortex-M3 and Cortex-M4.
|
|
* @param[in] *S points to an instance of the Q31 Biquad cascade structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_biquad_cascade_df1_fast_q31(
|
|
const arm_biquad_casd_df1_inst_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 Biquad cascade filter.
|
|
* @param[in,out] *S points to an instance of the Q31 Biquad cascade structure.
|
|
* @param[in] numStages number of 2nd order stages in the filter.
|
|
* @param[in] *pCoeffs points to the filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] postShift Shift to be applied to the output. Varies according to the coefficients format
|
|
* @return none
|
|
*/
|
|
|
|
void arm_biquad_cascade_df1_init_q31(
|
|
arm_biquad_casd_df1_inst_q31 * S,
|
|
uint8_t numStages,
|
|
q31_t * pCoeffs,
|
|
q31_t * pState,
|
|
int8_t postShift);
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point Biquad cascade filter.
|
|
* @param[in] *S points to an instance of the floating-point Biquad cascade structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_biquad_cascade_df1_f32(
|
|
const arm_biquad_casd_df1_inst_f32 * S,
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point Biquad cascade filter.
|
|
* @param[in,out] *S points to an instance of the floating-point Biquad cascade structure.
|
|
* @param[in] numStages number of 2nd order stages in the filter.
|
|
* @param[in] *pCoeffs points to the filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_biquad_cascade_df1_init_f32(
|
|
arm_biquad_casd_df1_inst_f32 * S,
|
|
uint8_t numStages,
|
|
float32_t * pCoeffs,
|
|
float32_t * pState);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point matrix structure.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows of the matrix. */
|
|
uint16_t numCols; /**< number of columns of the matrix. */
|
|
float32_t *pData; /**< points to the data of the matrix. */
|
|
} arm_matrix_instance_f32;
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point matrix structure.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows of the matrix. */
|
|
uint16_t numCols; /**< number of columns of the matrix. */
|
|
float64_t *pData; /**< points to the data of the matrix. */
|
|
} arm_matrix_instance_f64;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 matrix structure.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows of the matrix. */
|
|
uint16_t numCols; /**< number of columns of the matrix. */
|
|
q15_t *pData; /**< points to the data of the matrix. */
|
|
|
|
} arm_matrix_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 matrix structure.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows of the matrix. */
|
|
uint16_t numCols; /**< number of columns of the matrix. */
|
|
q31_t *pData; /**< points to the data of the matrix. */
|
|
|
|
} arm_matrix_instance_q31;
|
|
|
|
|
|
|
|
/**
|
|
* @brief Floating-point matrix addition.
|
|
* @param[in] *pSrcA points to the first input matrix structure
|
|
* @param[in] *pSrcB points to the second input matrix structure
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_add_f32(
|
|
const arm_matrix_instance_f32 * pSrcA,
|
|
const arm_matrix_instance_f32 * pSrcB,
|
|
arm_matrix_instance_f32 * pDst);
|
|
|
|
/**
|
|
* @brief Q15 matrix addition.
|
|
* @param[in] *pSrcA points to the first input matrix structure
|
|
* @param[in] *pSrcB points to the second input matrix structure
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_add_q15(
|
|
const arm_matrix_instance_q15 * pSrcA,
|
|
const arm_matrix_instance_q15 * pSrcB,
|
|
arm_matrix_instance_q15 * pDst);
|
|
|
|
/**
|
|
* @brief Q31 matrix addition.
|
|
* @param[in] *pSrcA points to the first input matrix structure
|
|
* @param[in] *pSrcB points to the second input matrix structure
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_add_q31(
|
|
const arm_matrix_instance_q31 * pSrcA,
|
|
const arm_matrix_instance_q31 * pSrcB,
|
|
arm_matrix_instance_q31 * pDst);
|
|
|
|
/**
|
|
* @brief Floating-point, complex, matrix multiplication.
|
|
* @param[in] *pSrcA points to the first input matrix structure
|
|
* @param[in] *pSrcB points to the second input matrix structure
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_cmplx_mult_f32(
|
|
const arm_matrix_instance_f32 * pSrcA,
|
|
const arm_matrix_instance_f32 * pSrcB,
|
|
arm_matrix_instance_f32 * pDst);
|
|
|
|
/**
|
|
* @brief Q15, complex, matrix multiplication.
|
|
* @param[in] *pSrcA points to the first input matrix structure
|
|
* @param[in] *pSrcB points to the second input matrix structure
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_cmplx_mult_q15(
|
|
const arm_matrix_instance_q15 * pSrcA,
|
|
const arm_matrix_instance_q15 * pSrcB,
|
|
arm_matrix_instance_q15 * pDst,
|
|
q15_t * pScratch);
|
|
|
|
/**
|
|
* @brief Q31, complex, matrix multiplication.
|
|
* @param[in] *pSrcA points to the first input matrix structure
|
|
* @param[in] *pSrcB points to the second input matrix structure
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_cmplx_mult_q31(
|
|
const arm_matrix_instance_q31 * pSrcA,
|
|
const arm_matrix_instance_q31 * pSrcB,
|
|
arm_matrix_instance_q31 * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point matrix transpose.
|
|
* @param[in] *pSrc points to the input matrix
|
|
* @param[out] *pDst points to the output matrix
|
|
* @return The function returns either <code>ARM_MATH_SIZE_MISMATCH</code>
|
|
* or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_trans_f32(
|
|
const arm_matrix_instance_f32 * pSrc,
|
|
arm_matrix_instance_f32 * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Q15 matrix transpose.
|
|
* @param[in] *pSrc points to the input matrix
|
|
* @param[out] *pDst points to the output matrix
|
|
* @return The function returns either <code>ARM_MATH_SIZE_MISMATCH</code>
|
|
* or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_trans_q15(
|
|
const arm_matrix_instance_q15 * pSrc,
|
|
arm_matrix_instance_q15 * pDst);
|
|
|
|
/**
|
|
* @brief Q31 matrix transpose.
|
|
* @param[in] *pSrc points to the input matrix
|
|
* @param[out] *pDst points to the output matrix
|
|
* @return The function returns either <code>ARM_MATH_SIZE_MISMATCH</code>
|
|
* or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_trans_q31(
|
|
const arm_matrix_instance_q31 * pSrc,
|
|
arm_matrix_instance_q31 * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point matrix multiplication
|
|
* @param[in] *pSrcA points to the first input matrix structure
|
|
* @param[in] *pSrcB points to the second input matrix structure
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_mult_f32(
|
|
const arm_matrix_instance_f32 * pSrcA,
|
|
const arm_matrix_instance_f32 * pSrcB,
|
|
arm_matrix_instance_f32 * pDst);
|
|
|
|
/**
|
|
* @brief Q15 matrix multiplication
|
|
* @param[in] *pSrcA points to the first input matrix structure
|
|
* @param[in] *pSrcB points to the second input matrix structure
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @param[in] *pState points to the array for storing intermediate results
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_mult_q15(
|
|
const arm_matrix_instance_q15 * pSrcA,
|
|
const arm_matrix_instance_q15 * pSrcB,
|
|
arm_matrix_instance_q15 * pDst,
|
|
q15_t * pState);
|
|
|
|
/**
|
|
* @brief Q15 matrix multiplication (fast variant) for Cortex-M3 and Cortex-M4
|
|
* @param[in] *pSrcA points to the first input matrix structure
|
|
* @param[in] *pSrcB points to the second input matrix structure
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @param[in] *pState points to the array for storing intermediate results
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_mult_fast_q15(
|
|
const arm_matrix_instance_q15 * pSrcA,
|
|
const arm_matrix_instance_q15 * pSrcB,
|
|
arm_matrix_instance_q15 * pDst,
|
|
q15_t * pState);
|
|
|
|
/**
|
|
* @brief Q31 matrix multiplication
|
|
* @param[in] *pSrcA points to the first input matrix structure
|
|
* @param[in] *pSrcB points to the second input matrix structure
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_mult_q31(
|
|
const arm_matrix_instance_q31 * pSrcA,
|
|
const arm_matrix_instance_q31 * pSrcB,
|
|
arm_matrix_instance_q31 * pDst);
|
|
|
|
/**
|
|
* @brief Q31 matrix multiplication (fast variant) for Cortex-M3 and Cortex-M4
|
|
* @param[in] *pSrcA points to the first input matrix structure
|
|
* @param[in] *pSrcB points to the second input matrix structure
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_mult_fast_q31(
|
|
const arm_matrix_instance_q31 * pSrcA,
|
|
const arm_matrix_instance_q31 * pSrcB,
|
|
arm_matrix_instance_q31 * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point matrix subtraction
|
|
* @param[in] *pSrcA points to the first input matrix structure
|
|
* @param[in] *pSrcB points to the second input matrix structure
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_sub_f32(
|
|
const arm_matrix_instance_f32 * pSrcA,
|
|
const arm_matrix_instance_f32 * pSrcB,
|
|
arm_matrix_instance_f32 * pDst);
|
|
|
|
/**
|
|
* @brief Q15 matrix subtraction
|
|
* @param[in] *pSrcA points to the first input matrix structure
|
|
* @param[in] *pSrcB points to the second input matrix structure
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_sub_q15(
|
|
const arm_matrix_instance_q15 * pSrcA,
|
|
const arm_matrix_instance_q15 * pSrcB,
|
|
arm_matrix_instance_q15 * pDst);
|
|
|
|
/**
|
|
* @brief Q31 matrix subtraction
|
|
* @param[in] *pSrcA points to the first input matrix structure
|
|
* @param[in] *pSrcB points to the second input matrix structure
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_sub_q31(
|
|
const arm_matrix_instance_q31 * pSrcA,
|
|
const arm_matrix_instance_q31 * pSrcB,
|
|
arm_matrix_instance_q31 * pDst);
|
|
|
|
/**
|
|
* @brief Floating-point matrix scaling.
|
|
* @param[in] *pSrc points to the input matrix
|
|
* @param[in] scale scale factor
|
|
* @param[out] *pDst points to the output matrix
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_scale_f32(
|
|
const arm_matrix_instance_f32 * pSrc,
|
|
float32_t scale,
|
|
arm_matrix_instance_f32 * pDst);
|
|
|
|
/**
|
|
* @brief Q15 matrix scaling.
|
|
* @param[in] *pSrc points to input matrix
|
|
* @param[in] scaleFract fractional portion of the scale factor
|
|
* @param[in] shift number of bits to shift the result by
|
|
* @param[out] *pDst points to output matrix
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_scale_q15(
|
|
const arm_matrix_instance_q15 * pSrc,
|
|
q15_t scaleFract,
|
|
int32_t shift,
|
|
arm_matrix_instance_q15 * pDst);
|
|
|
|
/**
|
|
* @brief Q31 matrix scaling.
|
|
* @param[in] *pSrc points to input matrix
|
|
* @param[in] scaleFract fractional portion of the scale factor
|
|
* @param[in] shift number of bits to shift the result by
|
|
* @param[out] *pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
|
|
arm_status arm_mat_scale_q31(
|
|
const arm_matrix_instance_q31 * pSrc,
|
|
q31_t scaleFract,
|
|
int32_t shift,
|
|
arm_matrix_instance_q31 * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Q31 matrix initialization.
|
|
* @param[in,out] *S points to an instance of the floating-point matrix structure.
|
|
* @param[in] nRows number of rows in the matrix.
|
|
* @param[in] nColumns number of columns in the matrix.
|
|
* @param[in] *pData points to the matrix data array.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_mat_init_q31(
|
|
arm_matrix_instance_q31 * S,
|
|
uint16_t nRows,
|
|
uint16_t nColumns,
|
|
q31_t * pData);
|
|
|
|
/**
|
|
* @brief Q15 matrix initialization.
|
|
* @param[in,out] *S points to an instance of the floating-point matrix structure.
|
|
* @param[in] nRows number of rows in the matrix.
|
|
* @param[in] nColumns number of columns in the matrix.
|
|
* @param[in] *pData points to the matrix data array.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_mat_init_q15(
|
|
arm_matrix_instance_q15 * S,
|
|
uint16_t nRows,
|
|
uint16_t nColumns,
|
|
q15_t * pData);
|
|
|
|
/**
|
|
* @brief Floating-point matrix initialization.
|
|
* @param[in,out] *S points to an instance of the floating-point matrix structure.
|
|
* @param[in] nRows number of rows in the matrix.
|
|
* @param[in] nColumns number of columns in the matrix.
|
|
* @param[in] *pData points to the matrix data array.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_mat_init_f32(
|
|
arm_matrix_instance_f32 * S,
|
|
uint16_t nRows,
|
|
uint16_t nColumns,
|
|
float32_t * pData);
|
|
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 PID Control.
|
|
*/
|
|
typedef struct
|
|
{
|
|
q15_t A0; /**< The derived gain, A0 = Kp + Ki + Kd . */
|
|
#ifdef ARM_MATH_CM0_FAMILY
|
|
q15_t A1;
|
|
q15_t A2;
|
|
#else
|
|
q31_t A1; /**< The derived gain A1 = -Kp - 2Kd | Kd.*/
|
|
#endif
|
|
q15_t state[3]; /**< The state array of length 3. */
|
|
q15_t Kp; /**< The proportional gain. */
|
|
q15_t Ki; /**< The integral gain. */
|
|
q15_t Kd; /**< The derivative gain. */
|
|
} arm_pid_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 PID Control.
|
|
*/
|
|
typedef struct
|
|
{
|
|
q31_t A0; /**< The derived gain, A0 = Kp + Ki + Kd . */
|
|
q31_t A1; /**< The derived gain, A1 = -Kp - 2Kd. */
|
|
q31_t A2; /**< The derived gain, A2 = Kd . */
|
|
q31_t state[3]; /**< The state array of length 3. */
|
|
q31_t Kp; /**< The proportional gain. */
|
|
q31_t Ki; /**< The integral gain. */
|
|
q31_t Kd; /**< The derivative gain. */
|
|
|
|
} arm_pid_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point PID Control.
|
|
*/
|
|
typedef struct
|
|
{
|
|
float32_t A0; /**< The derived gain, A0 = Kp + Ki + Kd . */
|
|
float32_t A1; /**< The derived gain, A1 = -Kp - 2Kd. */
|
|
float32_t A2; /**< The derived gain, A2 = Kd . */
|
|
float32_t state[3]; /**< The state array of length 3. */
|
|
float32_t Kp; /**< The proportional gain. */
|
|
float32_t Ki; /**< The integral gain. */
|
|
float32_t Kd; /**< The derivative gain. */
|
|
} arm_pid_instance_f32;
|
|
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point PID Control.
|
|
* @param[in,out] *S points to an instance of the PID structure.
|
|
* @param[in] resetStateFlag flag to reset the state. 0 = no change in state 1 = reset the state.
|
|
* @return none.
|
|
*/
|
|
void arm_pid_init_f32(
|
|
arm_pid_instance_f32 * S,
|
|
int32_t resetStateFlag);
|
|
|
|
/**
|
|
* @brief Reset function for the floating-point PID Control.
|
|
* @param[in,out] *S is an instance of the floating-point PID Control structure
|
|
* @return none
|
|
*/
|
|
void arm_pid_reset_f32(
|
|
arm_pid_instance_f32 * S);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 PID Control.
|
|
* @param[in,out] *S points to an instance of the Q15 PID structure.
|
|
* @param[in] resetStateFlag flag to reset the state. 0 = no change in state 1 = reset the state.
|
|
* @return none.
|
|
*/
|
|
void arm_pid_init_q31(
|
|
arm_pid_instance_q31 * S,
|
|
int32_t resetStateFlag);
|
|
|
|
|
|
/**
|
|
* @brief Reset function for the Q31 PID Control.
|
|
* @param[in,out] *S points to an instance of the Q31 PID Control structure
|
|
* @return none
|
|
*/
|
|
|
|
void arm_pid_reset_q31(
|
|
arm_pid_instance_q31 * S);
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 PID Control.
|
|
* @param[in,out] *S points to an instance of the Q15 PID structure.
|
|
* @param[in] resetStateFlag flag to reset the state. 0 = no change in state 1 = reset the state.
|
|
* @return none.
|
|
*/
|
|
void arm_pid_init_q15(
|
|
arm_pid_instance_q15 * S,
|
|
int32_t resetStateFlag);
|
|
|
|
/**
|
|
* @brief Reset function for the Q15 PID Control.
|
|
* @param[in,out] *S points to an instance of the q15 PID Control structure
|
|
* @return none
|
|
*/
|
|
void arm_pid_reset_q15(
|
|
arm_pid_instance_q15 * S);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point Linear Interpolate function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint32_t nValues; /**< nValues */
|
|
float32_t x1; /**< x1 */
|
|
float32_t xSpacing; /**< xSpacing */
|
|
float32_t *pYData; /**< pointer to the table of Y values */
|
|
} arm_linear_interp_instance_f32;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point bilinear interpolation function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows in the data table. */
|
|
uint16_t numCols; /**< number of columns in the data table. */
|
|
float32_t *pData; /**< points to the data table. */
|
|
} arm_bilinear_interp_instance_f32;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 bilinear interpolation function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows in the data table. */
|
|
uint16_t numCols; /**< number of columns in the data table. */
|
|
q31_t *pData; /**< points to the data table. */
|
|
} arm_bilinear_interp_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 bilinear interpolation function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows in the data table. */
|
|
uint16_t numCols; /**< number of columns in the data table. */
|
|
q15_t *pData; /**< points to the data table. */
|
|
} arm_bilinear_interp_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 bilinear interpolation function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows in the data table. */
|
|
uint16_t numCols; /**< number of columns in the data table. */
|
|
q7_t *pData; /**< points to the data table. */
|
|
} arm_bilinear_interp_instance_q7;
|
|
|
|
|
|
/**
|
|
* @brief Q7 vector multiplication.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_mult_q7(
|
|
q7_t * pSrcA,
|
|
q7_t * pSrcB,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Q15 vector multiplication.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_mult_q15(
|
|
q15_t * pSrcA,
|
|
q15_t * pSrcB,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Q31 vector multiplication.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_mult_q31(
|
|
q31_t * pSrcA,
|
|
q31_t * pSrcB,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Floating-point vector multiplication.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_mult_f32(
|
|
float32_t * pSrcA,
|
|
float32_t * pSrcB,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 CFFT/CIFFT function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
uint8_t ifftFlag; /**< flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. */
|
|
uint8_t bitReverseFlag; /**< flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. */
|
|
q15_t *pTwiddle; /**< points to the Sin twiddle factor table. */
|
|
uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t twidCoefModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
uint16_t bitRevFactor; /**< bit reversal modifier that supports different size FFTs with the same bit reversal table. */
|
|
} arm_cfft_radix2_instance_q15;
|
|
|
|
/* Deprecated */
|
|
arm_status arm_cfft_radix2_init_q15(
|
|
arm_cfft_radix2_instance_q15 * S,
|
|
uint16_t fftLen,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/* Deprecated */
|
|
void arm_cfft_radix2_q15(
|
|
const arm_cfft_radix2_instance_q15 * S,
|
|
q15_t * pSrc);
|
|
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 CFFT/CIFFT function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
uint8_t ifftFlag; /**< flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. */
|
|
uint8_t bitReverseFlag; /**< flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. */
|
|
q15_t *pTwiddle; /**< points to the twiddle factor table. */
|
|
uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t twidCoefModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
uint16_t bitRevFactor; /**< bit reversal modifier that supports different size FFTs with the same bit reversal table. */
|
|
} arm_cfft_radix4_instance_q15;
|
|
|
|
/* Deprecated */
|
|
arm_status arm_cfft_radix4_init_q15(
|
|
arm_cfft_radix4_instance_q15 * S,
|
|
uint16_t fftLen,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/* Deprecated */
|
|
void arm_cfft_radix4_q15(
|
|
const arm_cfft_radix4_instance_q15 * S,
|
|
q15_t * pSrc);
|
|
|
|
/**
|
|
* @brief Instance structure for the Radix-2 Q31 CFFT/CIFFT function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
uint8_t ifftFlag; /**< flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. */
|
|
uint8_t bitReverseFlag; /**< flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. */
|
|
q31_t *pTwiddle; /**< points to the Twiddle factor table. */
|
|
uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t twidCoefModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
uint16_t bitRevFactor; /**< bit reversal modifier that supports different size FFTs with the same bit reversal table. */
|
|
} arm_cfft_radix2_instance_q31;
|
|
|
|
/* Deprecated */
|
|
arm_status arm_cfft_radix2_init_q31(
|
|
arm_cfft_radix2_instance_q31 * S,
|
|
uint16_t fftLen,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/* Deprecated */
|
|
void arm_cfft_radix2_q31(
|
|
const arm_cfft_radix2_instance_q31 * S,
|
|
q31_t * pSrc);
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 CFFT/CIFFT function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
uint8_t ifftFlag; /**< flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. */
|
|
uint8_t bitReverseFlag; /**< flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. */
|
|
q31_t *pTwiddle; /**< points to the twiddle factor table. */
|
|
uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t twidCoefModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
uint16_t bitRevFactor; /**< bit reversal modifier that supports different size FFTs with the same bit reversal table. */
|
|
} arm_cfft_radix4_instance_q31;
|
|
|
|
/* Deprecated */
|
|
void arm_cfft_radix4_q31(
|
|
const arm_cfft_radix4_instance_q31 * S,
|
|
q31_t * pSrc);
|
|
|
|
/* Deprecated */
|
|
arm_status arm_cfft_radix4_init_q31(
|
|
arm_cfft_radix4_instance_q31 * S,
|
|
uint16_t fftLen,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point CFFT/CIFFT function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
uint8_t ifftFlag; /**< flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. */
|
|
uint8_t bitReverseFlag; /**< flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. */
|
|
float32_t *pTwiddle; /**< points to the Twiddle factor table. */
|
|
uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t twidCoefModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
uint16_t bitRevFactor; /**< bit reversal modifier that supports different size FFTs with the same bit reversal table. */
|
|
float32_t onebyfftLen; /**< value of 1/fftLen. */
|
|
} arm_cfft_radix2_instance_f32;
|
|
|
|
/* Deprecated */
|
|
arm_status arm_cfft_radix2_init_f32(
|
|
arm_cfft_radix2_instance_f32 * S,
|
|
uint16_t fftLen,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/* Deprecated */
|
|
void arm_cfft_radix2_f32(
|
|
const arm_cfft_radix2_instance_f32 * S,
|
|
float32_t * pSrc);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point CFFT/CIFFT function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
uint8_t ifftFlag; /**< flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. */
|
|
uint8_t bitReverseFlag; /**< flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. */
|
|
float32_t *pTwiddle; /**< points to the Twiddle factor table. */
|
|
uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t twidCoefModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
uint16_t bitRevFactor; /**< bit reversal modifier that supports different size FFTs with the same bit reversal table. */
|
|
float32_t onebyfftLen; /**< value of 1/fftLen. */
|
|
} arm_cfft_radix4_instance_f32;
|
|
|
|
/* Deprecated */
|
|
arm_status arm_cfft_radix4_init_f32(
|
|
arm_cfft_radix4_instance_f32 * S,
|
|
uint16_t fftLen,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/* Deprecated */
|
|
void arm_cfft_radix4_f32(
|
|
const arm_cfft_radix4_instance_f32 * S,
|
|
float32_t * pSrc);
|
|
|
|
/**
|
|
* @brief Instance structure for the fixed-point CFFT/CIFFT function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
const q15_t *pTwiddle; /**< points to the Twiddle factor table. */
|
|
const uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t bitRevLength; /**< bit reversal table length. */
|
|
} arm_cfft_instance_q15;
|
|
|
|
void arm_cfft_q15(
|
|
const arm_cfft_instance_q15 * S,
|
|
q15_t * p1,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/**
|
|
* @brief Instance structure for the fixed-point CFFT/CIFFT function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
const q31_t *pTwiddle; /**< points to the Twiddle factor table. */
|
|
const uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t bitRevLength; /**< bit reversal table length. */
|
|
} arm_cfft_instance_q31;
|
|
|
|
void arm_cfft_q31(
|
|
const arm_cfft_instance_q31 * S,
|
|
q31_t * p1,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point CFFT/CIFFT function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
const float32_t *pTwiddle; /**< points to the Twiddle factor table. */
|
|
const uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t bitRevLength; /**< bit reversal table length. */
|
|
} arm_cfft_instance_f32;
|
|
|
|
void arm_cfft_f32(
|
|
const arm_cfft_instance_f32 * S,
|
|
float32_t * p1,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 RFFT/RIFFT function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint32_t fftLenReal; /**< length of the real FFT. */
|
|
uint8_t ifftFlagR; /**< flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform. */
|
|
uint8_t bitReverseFlagR; /**< flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output. */
|
|
uint32_t twidCoefRModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
q15_t *pTwiddleAReal; /**< points to the real twiddle factor table. */
|
|
q15_t *pTwiddleBReal; /**< points to the imag twiddle factor table. */
|
|
const arm_cfft_instance_q15 *pCfft; /**< points to the complex FFT instance. */
|
|
} arm_rfft_instance_q15;
|
|
|
|
arm_status arm_rfft_init_q15(
|
|
arm_rfft_instance_q15 * S,
|
|
uint32_t fftLenReal,
|
|
uint32_t ifftFlagR,
|
|
uint32_t bitReverseFlag);
|
|
|
|
void arm_rfft_q15(
|
|
const arm_rfft_instance_q15 * S,
|
|
q15_t * pSrc,
|
|
q15_t * pDst);
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 RFFT/RIFFT function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint32_t fftLenReal; /**< length of the real FFT. */
|
|
uint8_t ifftFlagR; /**< flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform. */
|
|
uint8_t bitReverseFlagR; /**< flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output. */
|
|
uint32_t twidCoefRModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
q31_t *pTwiddleAReal; /**< points to the real twiddle factor table. */
|
|
q31_t *pTwiddleBReal; /**< points to the imag twiddle factor table. */
|
|
const arm_cfft_instance_q31 *pCfft; /**< points to the complex FFT instance. */
|
|
} arm_rfft_instance_q31;
|
|
|
|
arm_status arm_rfft_init_q31(
|
|
arm_rfft_instance_q31 * S,
|
|
uint32_t fftLenReal,
|
|
uint32_t ifftFlagR,
|
|
uint32_t bitReverseFlag);
|
|
|
|
void arm_rfft_q31(
|
|
const arm_rfft_instance_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pDst);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point RFFT/RIFFT function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint32_t fftLenReal; /**< length of the real FFT. */
|
|
uint16_t fftLenBy2; /**< length of the complex FFT. */
|
|
uint8_t ifftFlagR; /**< flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform. */
|
|
uint8_t bitReverseFlagR; /**< flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output. */
|
|
uint32_t twidCoefRModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
float32_t *pTwiddleAReal; /**< points to the real twiddle factor table. */
|
|
float32_t *pTwiddleBReal; /**< points to the imag twiddle factor table. */
|
|
arm_cfft_radix4_instance_f32 *pCfft; /**< points to the complex FFT instance. */
|
|
} arm_rfft_instance_f32;
|
|
|
|
arm_status arm_rfft_init_f32(
|
|
arm_rfft_instance_f32 * S,
|
|
arm_cfft_radix4_instance_f32 * S_CFFT,
|
|
uint32_t fftLenReal,
|
|
uint32_t ifftFlagR,
|
|
uint32_t bitReverseFlag);
|
|
|
|
void arm_rfft_f32(
|
|
const arm_rfft_instance_f32 * S,
|
|
float32_t * pSrc,
|
|
float32_t * pDst);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point RFFT/RIFFT function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
arm_cfft_instance_f32 Sint; /**< Internal CFFT structure. */
|
|
uint16_t fftLenRFFT; /**< length of the real sequence */
|
|
float32_t * pTwiddleRFFT; /**< Twiddle factors real stage */
|
|
} arm_rfft_fast_instance_f32 ;
|
|
|
|
arm_status arm_rfft_fast_init_f32 (
|
|
arm_rfft_fast_instance_f32 * S,
|
|
uint16_t fftLen);
|
|
|
|
void arm_rfft_fast_f32(
|
|
arm_rfft_fast_instance_f32 * S,
|
|
float32_t * p, float32_t * pOut,
|
|
uint8_t ifftFlag);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point DCT4/IDCT4 function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t N; /**< length of the DCT4. */
|
|
uint16_t Nby2; /**< half of the length of the DCT4. */
|
|
float32_t normalize; /**< normalizing factor. */
|
|
float32_t *pTwiddle; /**< points to the twiddle factor table. */
|
|
float32_t *pCosFactor; /**< points to the cosFactor table. */
|
|
arm_rfft_instance_f32 *pRfft; /**< points to the real FFT instance. */
|
|
arm_cfft_radix4_instance_f32 *pCfft; /**< points to the complex FFT instance. */
|
|
} arm_dct4_instance_f32;
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point DCT4/IDCT4.
|
|
* @param[in,out] *S points to an instance of floating-point DCT4/IDCT4 structure.
|
|
* @param[in] *S_RFFT points to an instance of floating-point RFFT/RIFFT structure.
|
|
* @param[in] *S_CFFT points to an instance of floating-point CFFT/CIFFT structure.
|
|
* @param[in] N length of the DCT4.
|
|
* @param[in] Nby2 half of the length of the DCT4.
|
|
* @param[in] normalize normalizing factor.
|
|
* @return arm_status function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_ARGUMENT_ERROR if <code>fftLenReal</code> is not a supported transform length.
|
|
*/
|
|
|
|
arm_status arm_dct4_init_f32(
|
|
arm_dct4_instance_f32 * S,
|
|
arm_rfft_instance_f32 * S_RFFT,
|
|
arm_cfft_radix4_instance_f32 * S_CFFT,
|
|
uint16_t N,
|
|
uint16_t Nby2,
|
|
float32_t normalize);
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point DCT4/IDCT4.
|
|
* @param[in] *S points to an instance of the floating-point DCT4/IDCT4 structure.
|
|
* @param[in] *pState points to state buffer.
|
|
* @param[in,out] *pInlineBuffer points to the in-place input and output buffer.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_dct4_f32(
|
|
const arm_dct4_instance_f32 * S,
|
|
float32_t * pState,
|
|
float32_t * pInlineBuffer);
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 DCT4/IDCT4 function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t N; /**< length of the DCT4. */
|
|
uint16_t Nby2; /**< half of the length of the DCT4. */
|
|
q31_t normalize; /**< normalizing factor. */
|
|
q31_t *pTwiddle; /**< points to the twiddle factor table. */
|
|
q31_t *pCosFactor; /**< points to the cosFactor table. */
|
|
arm_rfft_instance_q31 *pRfft; /**< points to the real FFT instance. */
|
|
arm_cfft_radix4_instance_q31 *pCfft; /**< points to the complex FFT instance. */
|
|
} arm_dct4_instance_q31;
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 DCT4/IDCT4.
|
|
* @param[in,out] *S points to an instance of Q31 DCT4/IDCT4 structure.
|
|
* @param[in] *S_RFFT points to an instance of Q31 RFFT/RIFFT structure
|
|
* @param[in] *S_CFFT points to an instance of Q31 CFFT/CIFFT structure
|
|
* @param[in] N length of the DCT4.
|
|
* @param[in] Nby2 half of the length of the DCT4.
|
|
* @param[in] normalize normalizing factor.
|
|
* @return arm_status function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_ARGUMENT_ERROR if <code>N</code> is not a supported transform length.
|
|
*/
|
|
|
|
arm_status arm_dct4_init_q31(
|
|
arm_dct4_instance_q31 * S,
|
|
arm_rfft_instance_q31 * S_RFFT,
|
|
arm_cfft_radix4_instance_q31 * S_CFFT,
|
|
uint16_t N,
|
|
uint16_t Nby2,
|
|
q31_t normalize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 DCT4/IDCT4.
|
|
* @param[in] *S points to an instance of the Q31 DCT4 structure.
|
|
* @param[in] *pState points to state buffer.
|
|
* @param[in,out] *pInlineBuffer points to the in-place input and output buffer.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_dct4_q31(
|
|
const arm_dct4_instance_q31 * S,
|
|
q31_t * pState,
|
|
q31_t * pInlineBuffer);
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 DCT4/IDCT4 function.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t N; /**< length of the DCT4. */
|
|
uint16_t Nby2; /**< half of the length of the DCT4. */
|
|
q15_t normalize; /**< normalizing factor. */
|
|
q15_t *pTwiddle; /**< points to the twiddle factor table. */
|
|
q15_t *pCosFactor; /**< points to the cosFactor table. */
|
|
arm_rfft_instance_q15 *pRfft; /**< points to the real FFT instance. */
|
|
arm_cfft_radix4_instance_q15 *pCfft; /**< points to the complex FFT instance. */
|
|
} arm_dct4_instance_q15;
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 DCT4/IDCT4.
|
|
* @param[in,out] *S points to an instance of Q15 DCT4/IDCT4 structure.
|
|
* @param[in] *S_RFFT points to an instance of Q15 RFFT/RIFFT structure.
|
|
* @param[in] *S_CFFT points to an instance of Q15 CFFT/CIFFT structure.
|
|
* @param[in] N length of the DCT4.
|
|
* @param[in] Nby2 half of the length of the DCT4.
|
|
* @param[in] normalize normalizing factor.
|
|
* @return arm_status function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_ARGUMENT_ERROR if <code>N</code> is not a supported transform length.
|
|
*/
|
|
|
|
arm_status arm_dct4_init_q15(
|
|
arm_dct4_instance_q15 * S,
|
|
arm_rfft_instance_q15 * S_RFFT,
|
|
arm_cfft_radix4_instance_q15 * S_CFFT,
|
|
uint16_t N,
|
|
uint16_t Nby2,
|
|
q15_t normalize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 DCT4/IDCT4.
|
|
* @param[in] *S points to an instance of the Q15 DCT4 structure.
|
|
* @param[in] *pState points to state buffer.
|
|
* @param[in,out] *pInlineBuffer points to the in-place input and output buffer.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_dct4_q15(
|
|
const arm_dct4_instance_q15 * S,
|
|
q15_t * pState,
|
|
q15_t * pInlineBuffer);
|
|
|
|
/**
|
|
* @brief Floating-point vector addition.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_add_f32(
|
|
float32_t * pSrcA,
|
|
float32_t * pSrcB,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Q7 vector addition.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_add_q7(
|
|
q7_t * pSrcA,
|
|
q7_t * pSrcB,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Q15 vector addition.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_add_q15(
|
|
q15_t * pSrcA,
|
|
q15_t * pSrcB,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Q31 vector addition.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_add_q31(
|
|
q31_t * pSrcA,
|
|
q31_t * pSrcB,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Floating-point vector subtraction.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_sub_f32(
|
|
float32_t * pSrcA,
|
|
float32_t * pSrcB,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Q7 vector subtraction.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_sub_q7(
|
|
q7_t * pSrcA,
|
|
q7_t * pSrcB,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Q15 vector subtraction.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_sub_q15(
|
|
q15_t * pSrcA,
|
|
q15_t * pSrcB,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Q31 vector subtraction.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_sub_q31(
|
|
q31_t * pSrcA,
|
|
q31_t * pSrcB,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Multiplies a floating-point vector by a scalar.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[in] scale scale factor to be applied
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_scale_f32(
|
|
float32_t * pSrc,
|
|
float32_t scale,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Multiplies a Q7 vector by a scalar.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[in] scaleFract fractional portion of the scale value
|
|
* @param[in] shift number of bits to shift the result by
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_scale_q7(
|
|
q7_t * pSrc,
|
|
q7_t scaleFract,
|
|
int8_t shift,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Multiplies a Q15 vector by a scalar.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[in] scaleFract fractional portion of the scale value
|
|
* @param[in] shift number of bits to shift the result by
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_scale_q15(
|
|
q15_t * pSrc,
|
|
q15_t scaleFract,
|
|
int8_t shift,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Multiplies a Q31 vector by a scalar.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[in] scaleFract fractional portion of the scale value
|
|
* @param[in] shift number of bits to shift the result by
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_scale_q31(
|
|
q31_t * pSrc,
|
|
q31_t scaleFract,
|
|
int8_t shift,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Q7 vector absolute value.
|
|
* @param[in] *pSrc points to the input buffer
|
|
* @param[out] *pDst points to the output buffer
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_abs_q7(
|
|
q7_t * pSrc,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Floating-point vector absolute value.
|
|
* @param[in] *pSrc points to the input buffer
|
|
* @param[out] *pDst points to the output buffer
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_abs_f32(
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Q15 vector absolute value.
|
|
* @param[in] *pSrc points to the input buffer
|
|
* @param[out] *pDst points to the output buffer
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_abs_q15(
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Q31 vector absolute value.
|
|
* @param[in] *pSrc points to the input buffer
|
|
* @param[out] *pDst points to the output buffer
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_abs_q31(
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Dot product of floating-point vectors.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @param[out] *result output result returned here
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_dot_prod_f32(
|
|
float32_t * pSrcA,
|
|
float32_t * pSrcB,
|
|
uint32_t blockSize,
|
|
float32_t * result);
|
|
|
|
/**
|
|
* @brief Dot product of Q7 vectors.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @param[out] *result output result returned here
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_dot_prod_q7(
|
|
q7_t * pSrcA,
|
|
q7_t * pSrcB,
|
|
uint32_t blockSize,
|
|
q31_t * result);
|
|
|
|
/**
|
|
* @brief Dot product of Q15 vectors.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @param[out] *result output result returned here
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_dot_prod_q15(
|
|
q15_t * pSrcA,
|
|
q15_t * pSrcB,
|
|
uint32_t blockSize,
|
|
q63_t * result);
|
|
|
|
/**
|
|
* @brief Dot product of Q31 vectors.
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @param[out] *result output result returned here
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_dot_prod_q31(
|
|
q31_t * pSrcA,
|
|
q31_t * pSrcB,
|
|
uint32_t blockSize,
|
|
q63_t * result);
|
|
|
|
/**
|
|
* @brief Shifts the elements of a Q7 vector a specified number of bits.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[in] shiftBits number of bits to shift. A positive value shifts left; a negative value shifts right.
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_shift_q7(
|
|
q7_t * pSrc,
|
|
int8_t shiftBits,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Shifts the elements of a Q15 vector a specified number of bits.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[in] shiftBits number of bits to shift. A positive value shifts left; a negative value shifts right.
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_shift_q15(
|
|
q15_t * pSrc,
|
|
int8_t shiftBits,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Shifts the elements of a Q31 vector a specified number of bits.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[in] shiftBits number of bits to shift. A positive value shifts left; a negative value shifts right.
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_shift_q31(
|
|
q31_t * pSrc,
|
|
int8_t shiftBits,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Adds a constant offset to a floating-point vector.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[in] offset is the offset to be added
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_offset_f32(
|
|
float32_t * pSrc,
|
|
float32_t offset,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Adds a constant offset to a Q7 vector.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[in] offset is the offset to be added
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_offset_q7(
|
|
q7_t * pSrc,
|
|
q7_t offset,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Adds a constant offset to a Q15 vector.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[in] offset is the offset to be added
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_offset_q15(
|
|
q15_t * pSrc,
|
|
q15_t offset,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Adds a constant offset to a Q31 vector.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[in] offset is the offset to be added
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_offset_q31(
|
|
q31_t * pSrc,
|
|
q31_t offset,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Negates the elements of a floating-point vector.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_negate_f32(
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Negates the elements of a Q7 vector.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_negate_q7(
|
|
q7_t * pSrc,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Negates the elements of a Q15 vector.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_negate_q15(
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Negates the elements of a Q31 vector.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_negate_q31(
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
/**
|
|
* @brief Copies the elements of a floating-point vector.
|
|
* @param[in] *pSrc input pointer
|
|
* @param[out] *pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_copy_f32(
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Copies the elements of a Q7 vector.
|
|
* @param[in] *pSrc input pointer
|
|
* @param[out] *pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_copy_q7(
|
|
q7_t * pSrc,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Copies the elements of a Q15 vector.
|
|
* @param[in] *pSrc input pointer
|
|
* @param[out] *pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_copy_q15(
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Copies the elements of a Q31 vector.
|
|
* @param[in] *pSrc input pointer
|
|
* @param[out] *pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_copy_q31(
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
/**
|
|
* @brief Fills a constant value into a floating-point vector.
|
|
* @param[in] value input value to be filled
|
|
* @param[out] *pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_fill_f32(
|
|
float32_t value,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Fills a constant value into a Q7 vector.
|
|
* @param[in] value input value to be filled
|
|
* @param[out] *pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_fill_q7(
|
|
q7_t value,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Fills a constant value into a Q15 vector.
|
|
* @param[in] value input value to be filled
|
|
* @param[out] *pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_fill_q15(
|
|
q15_t value,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Fills a constant value into a Q31 vector.
|
|
* @param[in] value input value to be filled
|
|
* @param[out] *pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_fill_q31(
|
|
q31_t value,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Convolution of floating-point sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the location where the output result is written. Length srcALen+srcBLen-1.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_conv_f32(
|
|
float32_t * pSrcA,
|
|
uint32_t srcALen,
|
|
float32_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
float32_t * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Convolution of Q15 sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length srcALen+srcBLen-1.
|
|
* @param[in] *pScratch1 points to scratch buffer of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @param[in] *pScratch2 points to scratch buffer of size min(srcALen, srcBLen).
|
|
* @return none.
|
|
*/
|
|
|
|
|
|
void arm_conv_opt_q15(
|
|
q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
q15_t * pScratch1,
|
|
q15_t * pScratch2);
|
|
|
|
|
|
/**
|
|
* @brief Convolution of Q15 sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the location where the output result is written. Length srcALen+srcBLen-1.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_conv_q15(
|
|
q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst);
|
|
|
|
/**
|
|
* @brief Convolution of Q15 sequences (fast version) for Cortex-M3 and Cortex-M4
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length srcALen+srcBLen-1.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_conv_fast_q15(
|
|
q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst);
|
|
|
|
/**
|
|
* @brief Convolution of Q15 sequences (fast version) for Cortex-M3 and Cortex-M4
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length srcALen+srcBLen-1.
|
|
* @param[in] *pScratch1 points to scratch buffer of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @param[in] *pScratch2 points to scratch buffer of size min(srcALen, srcBLen).
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_conv_fast_opt_q15(
|
|
q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
q15_t * pScratch1,
|
|
q15_t * pScratch2);
|
|
|
|
|
|
|
|
/**
|
|
* @brief Convolution of Q31 sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length srcALen+srcBLen-1.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_conv_q31(
|
|
q31_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q31_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q31_t * pDst);
|
|
|
|
/**
|
|
* @brief Convolution of Q31 sequences (fast version) for Cortex-M3 and Cortex-M4
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length srcALen+srcBLen-1.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_conv_fast_q31(
|
|
q31_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q31_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q31_t * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Convolution of Q7 sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length srcALen+srcBLen-1.
|
|
* @param[in] *pScratch1 points to scratch buffer(of type q15_t) of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @param[in] *pScratch2 points to scratch buffer (of type q15_t) of size min(srcALen, srcBLen).
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_conv_opt_q7(
|
|
q7_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q7_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q7_t * pDst,
|
|
q15_t * pScratch1,
|
|
q15_t * pScratch2);
|
|
|
|
|
|
|
|
/**
|
|
* @brief Convolution of Q7 sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length srcALen+srcBLen-1.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_conv_q7(
|
|
q7_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q7_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q7_t * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of floating-point sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
|
|
arm_status arm_conv_partial_f32(
|
|
float32_t * pSrcA,
|
|
uint32_t srcALen,
|
|
float32_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
float32_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints);
|
|
|
|
/**
|
|
* @brief Partial convolution of Q15 sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @param[in] * pScratch1 points to scratch buffer of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @param[in] * pScratch2 points to scratch buffer of size min(srcALen, srcBLen).
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
|
|
arm_status arm_conv_partial_opt_q15(
|
|
q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints,
|
|
q15_t * pScratch1,
|
|
q15_t * pScratch2);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of Q15 sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
|
|
arm_status arm_conv_partial_q15(
|
|
q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints);
|
|
|
|
/**
|
|
* @brief Partial convolution of Q15 sequences (fast version) for Cortex-M3 and Cortex-M4
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
|
|
arm_status arm_conv_partial_fast_q15(
|
|
q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of Q15 sequences (fast version) for Cortex-M3 and Cortex-M4
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @param[in] * pScratch1 points to scratch buffer of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @param[in] * pScratch2 points to scratch buffer of size min(srcALen, srcBLen).
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
|
|
arm_status arm_conv_partial_fast_opt_q15(
|
|
q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints,
|
|
q15_t * pScratch1,
|
|
q15_t * pScratch2);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of Q31 sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
|
|
arm_status arm_conv_partial_q31(
|
|
q31_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q31_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q31_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of Q31 sequences (fast version) for Cortex-M3 and Cortex-M4
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
|
|
arm_status arm_conv_partial_fast_q31(
|
|
q31_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q31_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q31_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of Q7 sequences
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @param[in] *pScratch1 points to scratch buffer(of type q15_t) of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @param[in] *pScratch2 points to scratch buffer (of type q15_t) of size min(srcALen, srcBLen).
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
|
|
arm_status arm_conv_partial_opt_q7(
|
|
q7_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q7_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q7_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints,
|
|
q15_t * pScratch1,
|
|
q15_t * pScratch2);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of Q7 sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
|
|
arm_status arm_conv_partial_q7(
|
|
q7_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q7_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q7_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints);
|
|
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 FIR decimator.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t M; /**< decimation factor. */
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
q15_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
q15_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
} arm_fir_decimate_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 FIR decimator.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t M; /**< decimation factor. */
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
q31_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
q31_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
|
|
} arm_fir_decimate_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point FIR decimator.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t M; /**< decimation factor. */
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
float32_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
float32_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
|
|
} arm_fir_decimate_instance_f32;
|
|
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point FIR decimator.
|
|
* @param[in] *S points to an instance of the floating-point FIR decimator structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_fir_decimate_f32(
|
|
const arm_fir_decimate_instance_f32 * S,
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point FIR decimator.
|
|
* @param[in,out] *S points to an instance of the floating-point FIR decimator structure.
|
|
* @param[in] numTaps number of coefficients in the filter.
|
|
* @param[in] M decimation factor.
|
|
* @param[in] *pCoeffs points to the filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return The function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_LENGTH_ERROR if
|
|
* <code>blockSize</code> is not a multiple of <code>M</code>.
|
|
*/
|
|
|
|
arm_status arm_fir_decimate_init_f32(
|
|
arm_fir_decimate_instance_f32 * S,
|
|
uint16_t numTaps,
|
|
uint8_t M,
|
|
float32_t * pCoeffs,
|
|
float32_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 FIR decimator.
|
|
* @param[in] *S points to an instance of the Q15 FIR decimator structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_fir_decimate_q15(
|
|
const arm_fir_decimate_instance_q15 * S,
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 FIR decimator (fast variant) for Cortex-M3 and Cortex-M4.
|
|
* @param[in] *S points to an instance of the Q15 FIR decimator structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_fir_decimate_fast_q15(
|
|
const arm_fir_decimate_instance_q15 * S,
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 FIR decimator.
|
|
* @param[in,out] *S points to an instance of the Q15 FIR decimator structure.
|
|
* @param[in] numTaps number of coefficients in the filter.
|
|
* @param[in] M decimation factor.
|
|
* @param[in] *pCoeffs points to the filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return The function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_LENGTH_ERROR if
|
|
* <code>blockSize</code> is not a multiple of <code>M</code>.
|
|
*/
|
|
|
|
arm_status arm_fir_decimate_init_q15(
|
|
arm_fir_decimate_instance_q15 * S,
|
|
uint16_t numTaps,
|
|
uint8_t M,
|
|
q15_t * pCoeffs,
|
|
q15_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 FIR decimator.
|
|
* @param[in] *S points to an instance of the Q31 FIR decimator structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_fir_decimate_q31(
|
|
const arm_fir_decimate_instance_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 FIR decimator (fast variant) for Cortex-M3 and Cortex-M4.
|
|
* @param[in] *S points to an instance of the Q31 FIR decimator structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_fir_decimate_fast_q31(
|
|
arm_fir_decimate_instance_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 FIR decimator.
|
|
* @param[in,out] *S points to an instance of the Q31 FIR decimator structure.
|
|
* @param[in] numTaps number of coefficients in the filter.
|
|
* @param[in] M decimation factor.
|
|
* @param[in] *pCoeffs points to the filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return The function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_LENGTH_ERROR if
|
|
* <code>blockSize</code> is not a multiple of <code>M</code>.
|
|
*/
|
|
|
|
arm_status arm_fir_decimate_init_q31(
|
|
arm_fir_decimate_instance_q31 * S,
|
|
uint16_t numTaps,
|
|
uint8_t M,
|
|
q31_t * pCoeffs,
|
|
q31_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 FIR interpolator.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t L; /**< upsample factor. */
|
|
uint16_t phaseLength; /**< length of each polyphase filter component. */
|
|
q15_t *pCoeffs; /**< points to the coefficient array. The array is of length L*phaseLength. */
|
|
q15_t *pState; /**< points to the state variable array. The array is of length blockSize+phaseLength-1. */
|
|
} arm_fir_interpolate_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 FIR interpolator.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t L; /**< upsample factor. */
|
|
uint16_t phaseLength; /**< length of each polyphase filter component. */
|
|
q31_t *pCoeffs; /**< points to the coefficient array. The array is of length L*phaseLength. */
|
|
q31_t *pState; /**< points to the state variable array. The array is of length blockSize+phaseLength-1. */
|
|
} arm_fir_interpolate_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point FIR interpolator.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t L; /**< upsample factor. */
|
|
uint16_t phaseLength; /**< length of each polyphase filter component. */
|
|
float32_t *pCoeffs; /**< points to the coefficient array. The array is of length L*phaseLength. */
|
|
float32_t *pState; /**< points to the state variable array. The array is of length phaseLength+numTaps-1. */
|
|
} arm_fir_interpolate_instance_f32;
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 FIR interpolator.
|
|
* @param[in] *S points to an instance of the Q15 FIR interpolator structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_fir_interpolate_q15(
|
|
const arm_fir_interpolate_instance_q15 * S,
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 FIR interpolator.
|
|
* @param[in,out] *S points to an instance of the Q15 FIR interpolator structure.
|
|
* @param[in] L upsample factor.
|
|
* @param[in] numTaps number of filter coefficients in the filter.
|
|
* @param[in] *pCoeffs points to the filter coefficient buffer.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return The function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_LENGTH_ERROR if
|
|
* the filter length <code>numTaps</code> is not a multiple of the interpolation factor <code>L</code>.
|
|
*/
|
|
|
|
arm_status arm_fir_interpolate_init_q15(
|
|
arm_fir_interpolate_instance_q15 * S,
|
|
uint8_t L,
|
|
uint16_t numTaps,
|
|
q15_t * pCoeffs,
|
|
q15_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 FIR interpolator.
|
|
* @param[in] *S points to an instance of the Q15 FIR interpolator structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_fir_interpolate_q31(
|
|
const arm_fir_interpolate_instance_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 FIR interpolator.
|
|
* @param[in,out] *S points to an instance of the Q31 FIR interpolator structure.
|
|
* @param[in] L upsample factor.
|
|
* @param[in] numTaps number of filter coefficients in the filter.
|
|
* @param[in] *pCoeffs points to the filter coefficient buffer.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return The function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_LENGTH_ERROR if
|
|
* the filter length <code>numTaps</code> is not a multiple of the interpolation factor <code>L</code>.
|
|
*/
|
|
|
|
arm_status arm_fir_interpolate_init_q31(
|
|
arm_fir_interpolate_instance_q31 * S,
|
|
uint8_t L,
|
|
uint16_t numTaps,
|
|
q31_t * pCoeffs,
|
|
q31_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point FIR interpolator.
|
|
* @param[in] *S points to an instance of the floating-point FIR interpolator structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_fir_interpolate_f32(
|
|
const arm_fir_interpolate_instance_f32 * S,
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point FIR interpolator.
|
|
* @param[in,out] *S points to an instance of the floating-point FIR interpolator structure.
|
|
* @param[in] L upsample factor.
|
|
* @param[in] numTaps number of filter coefficients in the filter.
|
|
* @param[in] *pCoeffs points to the filter coefficient buffer.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return The function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_LENGTH_ERROR if
|
|
* the filter length <code>numTaps</code> is not a multiple of the interpolation factor <code>L</code>.
|
|
*/
|
|
|
|
arm_status arm_fir_interpolate_init_f32(
|
|
arm_fir_interpolate_instance_f32 * S,
|
|
uint8_t L,
|
|
uint16_t numTaps,
|
|
float32_t * pCoeffs,
|
|
float32_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Instance structure for the high precision Q31 Biquad cascade filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t numStages; /**< number of 2nd order stages in the filter. Overall order is 2*numStages. */
|
|
q63_t *pState; /**< points to the array of state coefficients. The array is of length 4*numStages. */
|
|
q31_t *pCoeffs; /**< points to the array of coefficients. The array is of length 5*numStages. */
|
|
uint8_t postShift; /**< additional shift, in bits, applied to each output sample. */
|
|
|
|
} arm_biquad_cas_df1_32x64_ins_q31;
|
|
|
|
|
|
/**
|
|
* @param[in] *S points to an instance of the high precision Q31 Biquad cascade filter structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_biquad_cas_df1_32x64_q31(
|
|
const arm_biquad_cas_df1_32x64_ins_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @param[in,out] *S points to an instance of the high precision Q31 Biquad cascade filter structure.
|
|
* @param[in] numStages number of 2nd order stages in the filter.
|
|
* @param[in] *pCoeffs points to the filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] postShift shift to be applied to the output. Varies according to the coefficients format
|
|
* @return none
|
|
*/
|
|
|
|
void arm_biquad_cas_df1_32x64_init_q31(
|
|
arm_biquad_cas_df1_32x64_ins_q31 * S,
|
|
uint8_t numStages,
|
|
q31_t * pCoeffs,
|
|
q63_t * pState,
|
|
uint8_t postShift);
|
|
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point transposed direct form II Biquad cascade filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t numStages; /**< number of 2nd order stages in the filter. Overall order is 2*numStages. */
|
|
float32_t *pState; /**< points to the array of state coefficients. The array is of length 2*numStages. */
|
|
float32_t *pCoeffs; /**< points to the array of coefficients. The array is of length 5*numStages. */
|
|
} arm_biquad_cascade_df2T_instance_f32;
|
|
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point transposed direct form II Biquad cascade filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t numStages; /**< number of 2nd order stages in the filter. Overall order is 2*numStages. */
|
|
float32_t *pState; /**< points to the array of state coefficients. The array is of length 4*numStages. */
|
|
float32_t *pCoeffs; /**< points to the array of coefficients. The array is of length 5*numStages. */
|
|
} arm_biquad_cascade_stereo_df2T_instance_f32;
|
|
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point transposed direct form II Biquad cascade filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t numStages; /**< number of 2nd order stages in the filter. Overall order is 2*numStages. */
|
|
float64_t *pState; /**< points to the array of state coefficients. The array is of length 2*numStages. */
|
|
float64_t *pCoeffs; /**< points to the array of coefficients. The array is of length 5*numStages. */
|
|
} arm_biquad_cascade_df2T_instance_f64;
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point transposed direct form II Biquad cascade filter.
|
|
* @param[in] *S points to an instance of the filter data structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_biquad_cascade_df2T_f32(
|
|
const arm_biquad_cascade_df2T_instance_f32 * S,
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point transposed direct form II Biquad cascade filter. 2 channels
|
|
* @param[in] *S points to an instance of the filter data structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_biquad_cascade_stereo_df2T_f32(
|
|
const arm_biquad_cascade_stereo_df2T_instance_f32 * S,
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point transposed direct form II Biquad cascade filter.
|
|
* @param[in] *S points to an instance of the filter data structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_biquad_cascade_df2T_f64(
|
|
const arm_biquad_cascade_df2T_instance_f64 * S,
|
|
float64_t * pSrc,
|
|
float64_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point transposed direct form II Biquad cascade filter.
|
|
* @param[in,out] *S points to an instance of the filter data structure.
|
|
* @param[in] numStages number of 2nd order stages in the filter.
|
|
* @param[in] *pCoeffs points to the filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_biquad_cascade_df2T_init_f32(
|
|
arm_biquad_cascade_df2T_instance_f32 * S,
|
|
uint8_t numStages,
|
|
float32_t * pCoeffs,
|
|
float32_t * pState);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point transposed direct form II Biquad cascade filter.
|
|
* @param[in,out] *S points to an instance of the filter data structure.
|
|
* @param[in] numStages number of 2nd order stages in the filter.
|
|
* @param[in] *pCoeffs points to the filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_biquad_cascade_stereo_df2T_init_f32(
|
|
arm_biquad_cascade_stereo_df2T_instance_f32 * S,
|
|
uint8_t numStages,
|
|
float32_t * pCoeffs,
|
|
float32_t * pState);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point transposed direct form II Biquad cascade filter.
|
|
* @param[in,out] *S points to an instance of the filter data structure.
|
|
* @param[in] numStages number of 2nd order stages in the filter.
|
|
* @param[in] *pCoeffs points to the filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_biquad_cascade_df2T_init_f64(
|
|
arm_biquad_cascade_df2T_instance_f64 * S,
|
|
uint8_t numStages,
|
|
float64_t * pCoeffs,
|
|
float64_t * pState);
|
|
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 FIR lattice filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numStages; /**< number of filter stages. */
|
|
q15_t *pState; /**< points to the state variable array. The array is of length numStages. */
|
|
q15_t *pCoeffs; /**< points to the coefficient array. The array is of length numStages. */
|
|
} arm_fir_lattice_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 FIR lattice filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numStages; /**< number of filter stages. */
|
|
q31_t *pState; /**< points to the state variable array. The array is of length numStages. */
|
|
q31_t *pCoeffs; /**< points to the coefficient array. The array is of length numStages. */
|
|
} arm_fir_lattice_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point FIR lattice filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numStages; /**< number of filter stages. */
|
|
float32_t *pState; /**< points to the state variable array. The array is of length numStages. */
|
|
float32_t *pCoeffs; /**< points to the coefficient array. The array is of length numStages. */
|
|
} arm_fir_lattice_instance_f32;
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 FIR lattice filter.
|
|
* @param[in] *S points to an instance of the Q15 FIR lattice structure.
|
|
* @param[in] numStages number of filter stages.
|
|
* @param[in] *pCoeffs points to the coefficient buffer. The array is of length numStages.
|
|
* @param[in] *pState points to the state buffer. The array is of length numStages.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_fir_lattice_init_q15(
|
|
arm_fir_lattice_instance_q15 * S,
|
|
uint16_t numStages,
|
|
q15_t * pCoeffs,
|
|
q15_t * pState);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 FIR lattice filter.
|
|
* @param[in] *S points to an instance of the Q15 FIR lattice structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
void arm_fir_lattice_q15(
|
|
const arm_fir_lattice_instance_q15 * S,
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 FIR lattice filter.
|
|
* @param[in] *S points to an instance of the Q31 FIR lattice structure.
|
|
* @param[in] numStages number of filter stages.
|
|
* @param[in] *pCoeffs points to the coefficient buffer. The array is of length numStages.
|
|
* @param[in] *pState points to the state buffer. The array is of length numStages.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_fir_lattice_init_q31(
|
|
arm_fir_lattice_instance_q31 * S,
|
|
uint16_t numStages,
|
|
q31_t * pCoeffs,
|
|
q31_t * pState);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 FIR lattice filter.
|
|
* @param[in] *S points to an instance of the Q31 FIR lattice structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_fir_lattice_q31(
|
|
const arm_fir_lattice_instance_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point FIR lattice filter.
|
|
* @param[in] *S points to an instance of the floating-point FIR lattice structure.
|
|
* @param[in] numStages number of filter stages.
|
|
* @param[in] *pCoeffs points to the coefficient buffer. The array is of length numStages.
|
|
* @param[in] *pState points to the state buffer. The array is of length numStages.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_fir_lattice_init_f32(
|
|
arm_fir_lattice_instance_f32 * S,
|
|
uint16_t numStages,
|
|
float32_t * pCoeffs,
|
|
float32_t * pState);
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point FIR lattice filter.
|
|
* @param[in] *S points to an instance of the floating-point FIR lattice structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_fir_lattice_f32(
|
|
const arm_fir_lattice_instance_f32 * S,
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 IIR lattice filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numStages; /**< number of stages in the filter. */
|
|
q15_t *pState; /**< points to the state variable array. The array is of length numStages+blockSize. */
|
|
q15_t *pkCoeffs; /**< points to the reflection coefficient array. The array is of length numStages. */
|
|
q15_t *pvCoeffs; /**< points to the ladder coefficient array. The array is of length numStages+1. */
|
|
} arm_iir_lattice_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 IIR lattice filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numStages; /**< number of stages in the filter. */
|
|
q31_t *pState; /**< points to the state variable array. The array is of length numStages+blockSize. */
|
|
q31_t *pkCoeffs; /**< points to the reflection coefficient array. The array is of length numStages. */
|
|
q31_t *pvCoeffs; /**< points to the ladder coefficient array. The array is of length numStages+1. */
|
|
} arm_iir_lattice_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point IIR lattice filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numStages; /**< number of stages in the filter. */
|
|
float32_t *pState; /**< points to the state variable array. The array is of length numStages+blockSize. */
|
|
float32_t *pkCoeffs; /**< points to the reflection coefficient array. The array is of length numStages. */
|
|
float32_t *pvCoeffs; /**< points to the ladder coefficient array. The array is of length numStages+1. */
|
|
} arm_iir_lattice_instance_f32;
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point IIR lattice filter.
|
|
* @param[in] *S points to an instance of the floating-point IIR lattice structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_iir_lattice_f32(
|
|
const arm_iir_lattice_instance_f32 * S,
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point IIR lattice filter.
|
|
* @param[in] *S points to an instance of the floating-point IIR lattice structure.
|
|
* @param[in] numStages number of stages in the filter.
|
|
* @param[in] *pkCoeffs points to the reflection coefficient buffer. The array is of length numStages.
|
|
* @param[in] *pvCoeffs points to the ladder coefficient buffer. The array is of length numStages+1.
|
|
* @param[in] *pState points to the state buffer. The array is of length numStages+blockSize-1.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_iir_lattice_init_f32(
|
|
arm_iir_lattice_instance_f32 * S,
|
|
uint16_t numStages,
|
|
float32_t * pkCoeffs,
|
|
float32_t * pvCoeffs,
|
|
float32_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 IIR lattice filter.
|
|
* @param[in] *S points to an instance of the Q31 IIR lattice structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_iir_lattice_q31(
|
|
const arm_iir_lattice_instance_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 IIR lattice filter.
|
|
* @param[in] *S points to an instance of the Q31 IIR lattice structure.
|
|
* @param[in] numStages number of stages in the filter.
|
|
* @param[in] *pkCoeffs points to the reflection coefficient buffer. The array is of length numStages.
|
|
* @param[in] *pvCoeffs points to the ladder coefficient buffer. The array is of length numStages+1.
|
|
* @param[in] *pState points to the state buffer. The array is of length numStages+blockSize.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_iir_lattice_init_q31(
|
|
arm_iir_lattice_instance_q31 * S,
|
|
uint16_t numStages,
|
|
q31_t * pkCoeffs,
|
|
q31_t * pvCoeffs,
|
|
q31_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 IIR lattice filter.
|
|
* @param[in] *S points to an instance of the Q15 IIR lattice structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_iir_lattice_q15(
|
|
const arm_iir_lattice_instance_q15 * S,
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 IIR lattice filter.
|
|
* @param[in] *S points to an instance of the fixed-point Q15 IIR lattice structure.
|
|
* @param[in] numStages number of stages in the filter.
|
|
* @param[in] *pkCoeffs points to reflection coefficient buffer. The array is of length numStages.
|
|
* @param[in] *pvCoeffs points to ladder coefficient buffer. The array is of length numStages+1.
|
|
* @param[in] *pState points to state buffer. The array is of length numStages+blockSize.
|
|
* @param[in] blockSize number of samples to process per call.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_iir_lattice_init_q15(
|
|
arm_iir_lattice_instance_q15 * S,
|
|
uint16_t numStages,
|
|
q15_t * pkCoeffs,
|
|
q15_t * pvCoeffs,
|
|
q15_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point LMS filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
float32_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
float32_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
float32_t mu; /**< step size that controls filter coefficient updates. */
|
|
} arm_lms_instance_f32;
|
|
|
|
/**
|
|
* @brief Processing function for floating-point LMS filter.
|
|
* @param[in] *S points to an instance of the floating-point LMS filter structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[in] *pRef points to the block of reference data.
|
|
* @param[out] *pOut points to the block of output data.
|
|
* @param[out] *pErr points to the block of error data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_lms_f32(
|
|
const arm_lms_instance_f32 * S,
|
|
float32_t * pSrc,
|
|
float32_t * pRef,
|
|
float32_t * pOut,
|
|
float32_t * pErr,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for floating-point LMS filter.
|
|
* @param[in] *S points to an instance of the floating-point LMS filter structure.
|
|
* @param[in] numTaps number of filter coefficients.
|
|
* @param[in] *pCoeffs points to the coefficient buffer.
|
|
* @param[in] *pState points to state buffer.
|
|
* @param[in] mu step size that controls filter coefficient updates.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_lms_init_f32(
|
|
arm_lms_instance_f32 * S,
|
|
uint16_t numTaps,
|
|
float32_t * pCoeffs,
|
|
float32_t * pState,
|
|
float32_t mu,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 LMS filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
q15_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
q15_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
q15_t mu; /**< step size that controls filter coefficient updates. */
|
|
uint32_t postShift; /**< bit shift applied to coefficients. */
|
|
} arm_lms_instance_q15;
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 LMS filter.
|
|
* @param[in] *S points to an instance of the Q15 LMS filter structure.
|
|
* @param[in] numTaps number of filter coefficients.
|
|
* @param[in] *pCoeffs points to the coefficient buffer.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] mu step size that controls filter coefficient updates.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @param[in] postShift bit shift applied to coefficients.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_lms_init_q15(
|
|
arm_lms_instance_q15 * S,
|
|
uint16_t numTaps,
|
|
q15_t * pCoeffs,
|
|
q15_t * pState,
|
|
q15_t mu,
|
|
uint32_t blockSize,
|
|
uint32_t postShift);
|
|
|
|
/**
|
|
* @brief Processing function for Q15 LMS filter.
|
|
* @param[in] *S points to an instance of the Q15 LMS filter structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[in] *pRef points to the block of reference data.
|
|
* @param[out] *pOut points to the block of output data.
|
|
* @param[out] *pErr points to the block of error data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_lms_q15(
|
|
const arm_lms_instance_q15 * S,
|
|
q15_t * pSrc,
|
|
q15_t * pRef,
|
|
q15_t * pOut,
|
|
q15_t * pErr,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 LMS filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
q31_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
q31_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
q31_t mu; /**< step size that controls filter coefficient updates. */
|
|
uint32_t postShift; /**< bit shift applied to coefficients. */
|
|
|
|
} arm_lms_instance_q31;
|
|
|
|
/**
|
|
* @brief Processing function for Q31 LMS filter.
|
|
* @param[in] *S points to an instance of the Q15 LMS filter structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[in] *pRef points to the block of reference data.
|
|
* @param[out] *pOut points to the block of output data.
|
|
* @param[out] *pErr points to the block of error data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_lms_q31(
|
|
const arm_lms_instance_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pRef,
|
|
q31_t * pOut,
|
|
q31_t * pErr,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for Q31 LMS filter.
|
|
* @param[in] *S points to an instance of the Q31 LMS filter structure.
|
|
* @param[in] numTaps number of filter coefficients.
|
|
* @param[in] *pCoeffs points to coefficient buffer.
|
|
* @param[in] *pState points to state buffer.
|
|
* @param[in] mu step size that controls filter coefficient updates.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @param[in] postShift bit shift applied to coefficients.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_lms_init_q31(
|
|
arm_lms_instance_q31 * S,
|
|
uint16_t numTaps,
|
|
q31_t * pCoeffs,
|
|
q31_t * pState,
|
|
q31_t mu,
|
|
uint32_t blockSize,
|
|
uint32_t postShift);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point normalized LMS filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
float32_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
float32_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
float32_t mu; /**< step size that control filter coefficient updates. */
|
|
float32_t energy; /**< saves previous frame energy. */
|
|
float32_t x0; /**< saves previous input sample. */
|
|
} arm_lms_norm_instance_f32;
|
|
|
|
/**
|
|
* @brief Processing function for floating-point normalized LMS filter.
|
|
* @param[in] *S points to an instance of the floating-point normalized LMS filter structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[in] *pRef points to the block of reference data.
|
|
* @param[out] *pOut points to the block of output data.
|
|
* @param[out] *pErr points to the block of error data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_lms_norm_f32(
|
|
arm_lms_norm_instance_f32 * S,
|
|
float32_t * pSrc,
|
|
float32_t * pRef,
|
|
float32_t * pOut,
|
|
float32_t * pErr,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for floating-point normalized LMS filter.
|
|
* @param[in] *S points to an instance of the floating-point LMS filter structure.
|
|
* @param[in] numTaps number of filter coefficients.
|
|
* @param[in] *pCoeffs points to coefficient buffer.
|
|
* @param[in] *pState points to state buffer.
|
|
* @param[in] mu step size that controls filter coefficient updates.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_lms_norm_init_f32(
|
|
arm_lms_norm_instance_f32 * S,
|
|
uint16_t numTaps,
|
|
float32_t * pCoeffs,
|
|
float32_t * pState,
|
|
float32_t mu,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 normalized LMS filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
q31_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
q31_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
q31_t mu; /**< step size that controls filter coefficient updates. */
|
|
uint8_t postShift; /**< bit shift applied to coefficients. */
|
|
q31_t *recipTable; /**< points to the reciprocal initial value table. */
|
|
q31_t energy; /**< saves previous frame energy. */
|
|
q31_t x0; /**< saves previous input sample. */
|
|
} arm_lms_norm_instance_q31;
|
|
|
|
/**
|
|
* @brief Processing function for Q31 normalized LMS filter.
|
|
* @param[in] *S points to an instance of the Q31 normalized LMS filter structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[in] *pRef points to the block of reference data.
|
|
* @param[out] *pOut points to the block of output data.
|
|
* @param[out] *pErr points to the block of error data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_lms_norm_q31(
|
|
arm_lms_norm_instance_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pRef,
|
|
q31_t * pOut,
|
|
q31_t * pErr,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for Q31 normalized LMS filter.
|
|
* @param[in] *S points to an instance of the Q31 normalized LMS filter structure.
|
|
* @param[in] numTaps number of filter coefficients.
|
|
* @param[in] *pCoeffs points to coefficient buffer.
|
|
* @param[in] *pState points to state buffer.
|
|
* @param[in] mu step size that controls filter coefficient updates.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @param[in] postShift bit shift applied to coefficients.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_lms_norm_init_q31(
|
|
arm_lms_norm_instance_q31 * S,
|
|
uint16_t numTaps,
|
|
q31_t * pCoeffs,
|
|
q31_t * pState,
|
|
q31_t mu,
|
|
uint32_t blockSize,
|
|
uint8_t postShift);
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 normalized LMS filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< Number of coefficients in the filter. */
|
|
q15_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
q15_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
q15_t mu; /**< step size that controls filter coefficient updates. */
|
|
uint8_t postShift; /**< bit shift applied to coefficients. */
|
|
q15_t *recipTable; /**< Points to the reciprocal initial value table. */
|
|
q15_t energy; /**< saves previous frame energy. */
|
|
q15_t x0; /**< saves previous input sample. */
|
|
} arm_lms_norm_instance_q15;
|
|
|
|
/**
|
|
* @brief Processing function for Q15 normalized LMS filter.
|
|
* @param[in] *S points to an instance of the Q15 normalized LMS filter structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[in] *pRef points to the block of reference data.
|
|
* @param[out] *pOut points to the block of output data.
|
|
* @param[out] *pErr points to the block of error data.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_lms_norm_q15(
|
|
arm_lms_norm_instance_q15 * S,
|
|
q15_t * pSrc,
|
|
q15_t * pRef,
|
|
q15_t * pOut,
|
|
q15_t * pErr,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for Q15 normalized LMS filter.
|
|
* @param[in] *S points to an instance of the Q15 normalized LMS filter structure.
|
|
* @param[in] numTaps number of filter coefficients.
|
|
* @param[in] *pCoeffs points to coefficient buffer.
|
|
* @param[in] *pState points to state buffer.
|
|
* @param[in] mu step size that controls filter coefficient updates.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @param[in] postShift bit shift applied to coefficients.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_lms_norm_init_q15(
|
|
arm_lms_norm_instance_q15 * S,
|
|
uint16_t numTaps,
|
|
q15_t * pCoeffs,
|
|
q15_t * pState,
|
|
q15_t mu,
|
|
uint32_t blockSize,
|
|
uint8_t postShift);
|
|
|
|
/**
|
|
* @brief Correlation of floating-point sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_correlate_f32(
|
|
float32_t * pSrcA,
|
|
uint32_t srcALen,
|
|
float32_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
float32_t * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Correlation of Q15 sequences
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
* @param[in] *pScratch points to scratch buffer of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @return none.
|
|
*/
|
|
void arm_correlate_opt_q15(
|
|
q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
q15_t * pScratch);
|
|
|
|
|
|
/**
|
|
* @brief Correlation of Q15 sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_correlate_q15(
|
|
q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst);
|
|
|
|
/**
|
|
* @brief Correlation of Q15 sequences (fast version) for Cortex-M3 and Cortex-M4.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_correlate_fast_q15(
|
|
q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst);
|
|
|
|
|
|
|
|
/**
|
|
* @brief Correlation of Q15 sequences (fast version) for Cortex-M3 and Cortex-M4.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
* @param[in] *pScratch points to scratch buffer of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_correlate_fast_opt_q15(
|
|
q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
q15_t * pScratch);
|
|
|
|
/**
|
|
* @brief Correlation of Q31 sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_correlate_q31(
|
|
q31_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q31_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q31_t * pDst);
|
|
|
|
/**
|
|
* @brief Correlation of Q31 sequences (fast version) for Cortex-M3 and Cortex-M4
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_correlate_fast_q31(
|
|
q31_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q31_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q31_t * pDst);
|
|
|
|
|
|
|
|
/**
|
|
* @brief Correlation of Q7 sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
* @param[in] *pScratch1 points to scratch buffer(of type q15_t) of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @param[in] *pScratch2 points to scratch buffer (of type q15_t) of size min(srcALen, srcBLen).
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_correlate_opt_q7(
|
|
q7_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q7_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q7_t * pDst,
|
|
q15_t * pScratch1,
|
|
q15_t * pScratch2);
|
|
|
|
|
|
/**
|
|
* @brief Correlation of Q7 sequences.
|
|
* @param[in] *pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] *pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] *pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_correlate_q7(
|
|
q7_t * pSrcA,
|
|
uint32_t srcALen,
|
|
q7_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q7_t * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point sparse FIR filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
uint16_t stateIndex; /**< state buffer index. Points to the oldest sample in the state buffer. */
|
|
float32_t *pState; /**< points to the state buffer array. The array is of length maxDelay+blockSize-1. */
|
|
float32_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
uint16_t maxDelay; /**< maximum offset specified by the pTapDelay array. */
|
|
int32_t *pTapDelay; /**< points to the array of delay values. The array is of length numTaps. */
|
|
} arm_fir_sparse_instance_f32;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 sparse FIR filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
uint16_t stateIndex; /**< state buffer index. Points to the oldest sample in the state buffer. */
|
|
q31_t *pState; /**< points to the state buffer array. The array is of length maxDelay+blockSize-1. */
|
|
q31_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
uint16_t maxDelay; /**< maximum offset specified by the pTapDelay array. */
|
|
int32_t *pTapDelay; /**< points to the array of delay values. The array is of length numTaps. */
|
|
} arm_fir_sparse_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 sparse FIR filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
uint16_t stateIndex; /**< state buffer index. Points to the oldest sample in the state buffer. */
|
|
q15_t *pState; /**< points to the state buffer array. The array is of length maxDelay+blockSize-1. */
|
|
q15_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
uint16_t maxDelay; /**< maximum offset specified by the pTapDelay array. */
|
|
int32_t *pTapDelay; /**< points to the array of delay values. The array is of length numTaps. */
|
|
} arm_fir_sparse_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q7 sparse FIR filter.
|
|
*/
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
uint16_t stateIndex; /**< state buffer index. Points to the oldest sample in the state buffer. */
|
|
q7_t *pState; /**< points to the state buffer array. The array is of length maxDelay+blockSize-1. */
|
|
q7_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
uint16_t maxDelay; /**< maximum offset specified by the pTapDelay array. */
|
|
int32_t *pTapDelay; /**< points to the array of delay values. The array is of length numTaps. */
|
|
} arm_fir_sparse_instance_q7;
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point sparse FIR filter.
|
|
* @param[in] *S points to an instance of the floating-point sparse FIR structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] *pScratchIn points to a temporary buffer of size blockSize.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_fir_sparse_f32(
|
|
arm_fir_sparse_instance_f32 * S,
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
float32_t * pScratchIn,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point sparse FIR filter.
|
|
* @param[in,out] *S points to an instance of the floating-point sparse FIR structure.
|
|
* @param[in] numTaps number of nonzero coefficients in the filter.
|
|
* @param[in] *pCoeffs points to the array of filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] *pTapDelay points to the array of offset times.
|
|
* @param[in] maxDelay maximum offset time supported.
|
|
* @param[in] blockSize number of samples that will be processed per block.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_fir_sparse_init_f32(
|
|
arm_fir_sparse_instance_f32 * S,
|
|
uint16_t numTaps,
|
|
float32_t * pCoeffs,
|
|
float32_t * pState,
|
|
int32_t * pTapDelay,
|
|
uint16_t maxDelay,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 sparse FIR filter.
|
|
* @param[in] *S points to an instance of the Q31 sparse FIR structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] *pScratchIn points to a temporary buffer of size blockSize.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_fir_sparse_q31(
|
|
arm_fir_sparse_instance_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
q31_t * pScratchIn,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 sparse FIR filter.
|
|
* @param[in,out] *S points to an instance of the Q31 sparse FIR structure.
|
|
* @param[in] numTaps number of nonzero coefficients in the filter.
|
|
* @param[in] *pCoeffs points to the array of filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] *pTapDelay points to the array of offset times.
|
|
* @param[in] maxDelay maximum offset time supported.
|
|
* @param[in] blockSize number of samples that will be processed per block.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_fir_sparse_init_q31(
|
|
arm_fir_sparse_instance_q31 * S,
|
|
uint16_t numTaps,
|
|
q31_t * pCoeffs,
|
|
q31_t * pState,
|
|
int32_t * pTapDelay,
|
|
uint16_t maxDelay,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 sparse FIR filter.
|
|
* @param[in] *S points to an instance of the Q15 sparse FIR structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] *pScratchIn points to a temporary buffer of size blockSize.
|
|
* @param[in] *pScratchOut points to a temporary buffer of size blockSize.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_fir_sparse_q15(
|
|
arm_fir_sparse_instance_q15 * S,
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
q15_t * pScratchIn,
|
|
q31_t * pScratchOut,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 sparse FIR filter.
|
|
* @param[in,out] *S points to an instance of the Q15 sparse FIR structure.
|
|
* @param[in] numTaps number of nonzero coefficients in the filter.
|
|
* @param[in] *pCoeffs points to the array of filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] *pTapDelay points to the array of offset times.
|
|
* @param[in] maxDelay maximum offset time supported.
|
|
* @param[in] blockSize number of samples that will be processed per block.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_fir_sparse_init_q15(
|
|
arm_fir_sparse_instance_q15 * S,
|
|
uint16_t numTaps,
|
|
q15_t * pCoeffs,
|
|
q15_t * pState,
|
|
int32_t * pTapDelay,
|
|
uint16_t maxDelay,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q7 sparse FIR filter.
|
|
* @param[in] *S points to an instance of the Q7 sparse FIR structure.
|
|
* @param[in] *pSrc points to the block of input data.
|
|
* @param[out] *pDst points to the block of output data
|
|
* @param[in] *pScratchIn points to a temporary buffer of size blockSize.
|
|
* @param[in] *pScratchOut points to a temporary buffer of size blockSize.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_fir_sparse_q7(
|
|
arm_fir_sparse_instance_q7 * S,
|
|
q7_t * pSrc,
|
|
q7_t * pDst,
|
|
q7_t * pScratchIn,
|
|
q31_t * pScratchOut,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the Q7 sparse FIR filter.
|
|
* @param[in,out] *S points to an instance of the Q7 sparse FIR structure.
|
|
* @param[in] numTaps number of nonzero coefficients in the filter.
|
|
* @param[in] *pCoeffs points to the array of filter coefficients.
|
|
* @param[in] *pState points to the state buffer.
|
|
* @param[in] *pTapDelay points to the array of offset times.
|
|
* @param[in] maxDelay maximum offset time supported.
|
|
* @param[in] blockSize number of samples that will be processed per block.
|
|
* @return none
|
|
*/
|
|
|
|
void arm_fir_sparse_init_q7(
|
|
arm_fir_sparse_instance_q7 * S,
|
|
uint16_t numTaps,
|
|
q7_t * pCoeffs,
|
|
q7_t * pState,
|
|
int32_t * pTapDelay,
|
|
uint16_t maxDelay,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/*
|
|
* @brief Floating-point sin_cos function.
|
|
* @param[in] theta input value in degrees
|
|
* @param[out] *pSinVal points to the processed sine output.
|
|
* @param[out] *pCosVal points to the processed cos output.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_sin_cos_f32(
|
|
float32_t theta,
|
|
float32_t * pSinVal,
|
|
float32_t * pCcosVal);
|
|
|
|
/*
|
|
* @brief Q31 sin_cos function.
|
|
* @param[in] theta scaled input value in degrees
|
|
* @param[out] *pSinVal points to the processed sine output.
|
|
* @param[out] *pCosVal points to the processed cosine output.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_sin_cos_q31(
|
|
q31_t theta,
|
|
q31_t * pSinVal,
|
|
q31_t * pCosVal);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point complex conjugate.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_conj_f32(
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
/**
|
|
* @brief Q31 complex conjugate.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_conj_q31(
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
/**
|
|
* @brief Q15 complex conjugate.
|
|
* @param[in] *pSrc points to the input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_conj_q15(
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
|
|
/**
|
|
* @brief Floating-point complex magnitude squared
|
|
* @param[in] *pSrc points to the complex input vector
|
|
* @param[out] *pDst points to the real output vector
|
|
* @param[in] numSamples number of complex samples in the input vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_mag_squared_f32(
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
/**
|
|
* @brief Q31 complex magnitude squared
|
|
* @param[in] *pSrc points to the complex input vector
|
|
* @param[out] *pDst points to the real output vector
|
|
* @param[in] numSamples number of complex samples in the input vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_mag_squared_q31(
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
/**
|
|
* @brief Q15 complex magnitude squared
|
|
* @param[in] *pSrc points to the complex input vector
|
|
* @param[out] *pDst points to the real output vector
|
|
* @param[in] numSamples number of complex samples in the input vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_mag_squared_q15(
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @ingroup groupController
|
|
*/
|
|
|
|
/**
|
|
* @defgroup PID PID Motor Control
|
|
*
|
|
* A Proportional Integral Derivative (PID) controller is a generic feedback control
|
|
* loop mechanism widely used in industrial control systems.
|
|
* A PID controller is the most commonly used type of feedback controller.
|
|
*
|
|
* This set of functions implements (PID) controllers
|
|
* for Q15, Q31, and floating-point data types. The functions operate on a single sample
|
|
* of data and each call to the function returns a single processed value.
|
|
* <code>S</code> points to an instance of the PID control data structure. <code>in</code>
|
|
* is the input sample value. The functions return the output value.
|
|
*
|
|
* \par Algorithm:
|
|
* <pre>
|
|
* y[n] = y[n-1] + A0 * x[n] + A1 * x[n-1] + A2 * x[n-2]
|
|
* A0 = Kp + Ki + Kd
|
|
* A1 = (-Kp ) - (2 * Kd )
|
|
* A2 = Kd </pre>
|
|
*
|
|
* \par
|
|
* where \c Kp is proportional constant, \c Ki is Integral constant and \c Kd is Derivative constant
|
|
*
|
|
* \par
|
|
* \image html PID.gif "Proportional Integral Derivative Controller"
|
|
*
|
|
* \par
|
|
* The PID controller calculates an "error" value as the difference between
|
|
* the measured output and the reference input.
|
|
* The controller attempts to minimize the error by adjusting the process control inputs.
|
|
* The proportional value determines the reaction to the current error,
|
|
* the integral value determines the reaction based on the sum of recent errors,
|
|
* and the derivative value determines the reaction based on the rate at which the error has been changing.
|
|
*
|
|
* \par Instance Structure
|
|
* The Gains A0, A1, A2 and state variables for a PID controller are stored together in an instance data structure.
|
|
* A separate instance structure must be defined for each PID Controller.
|
|
* There are separate instance structure declarations for each of the 3 supported data types.
|
|
*
|
|
* \par Reset Functions
|
|
* There is also an associated reset function for each data type which clears the state array.
|
|
*
|
|
* \par Initialization Functions
|
|
* There is also an associated initialization function for each data type.
|
|
* The initialization function performs the following operations:
|
|
* - Initializes the Gains A0, A1, A2 from Kp,Ki, Kd gains.
|
|
* - Zeros out the values in the state buffer.
|
|
*
|
|
* \par
|
|
* Instance structure cannot be placed into a const data section and it is recommended to use the initialization function.
|
|
*
|
|
* \par Fixed-Point Behavior
|
|
* Care must be taken when using the fixed-point versions of the PID Controller functions.
|
|
* In particular, the overflow and saturation behavior of the accumulator used in each function must be considered.
|
|
* Refer to the function specific documentation below for usage guidelines.
|
|
*/
|
|
|
|
/**
|
|
* @addtogroup PID
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Process function for the floating-point PID Control.
|
|
* @param[in,out] *S is an instance of the floating-point PID Control structure
|
|
* @param[in] in input sample to process
|
|
* @return out processed output sample.
|
|
*/
|
|
|
|
|
|
static __INLINE float32_t arm_pid_f32(
|
|
arm_pid_instance_f32 * S,
|
|
float32_t in)
|
|
{
|
|
float32_t out;
|
|
|
|
/* y[n] = y[n-1] + A0 * x[n] + A1 * x[n-1] + A2 * x[n-2] */
|
|
out = (S->A0 * in) +
|
|
(S->A1 * S->state[0]) + (S->A2 * S->state[1]) + (S->state[2]);
|
|
|
|
/* Update state */
|
|
S->state[1] = S->state[0];
|
|
S->state[0] = in;
|
|
S->state[2] = out;
|
|
|
|
/* return to application */
|
|
return (out);
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Process function for the Q31 PID Control.
|
|
* @param[in,out] *S points to an instance of the Q31 PID Control structure
|
|
* @param[in] in input sample to process
|
|
* @return out processed output sample.
|
|
*
|
|
* <b>Scaling and Overflow Behavior:</b>
|
|
* \par
|
|
* The function is implemented using an internal 64-bit accumulator.
|
|
* The accumulator has a 2.62 format and maintains full precision of the intermediate multiplication results but provides only a single guard bit.
|
|
* Thus, if the accumulator result overflows it wraps around rather than clip.
|
|
* In order to avoid overflows completely the input signal must be scaled down by 2 bits as there are four additions.
|
|
* After all multiply-accumulates are performed, the 2.62 accumulator is truncated to 1.32 format and then saturated to 1.31 format.
|
|
*/
|
|
|
|
static __INLINE q31_t arm_pid_q31(
|
|
arm_pid_instance_q31 * S,
|
|
q31_t in)
|
|
{
|
|
q63_t acc;
|
|
q31_t out;
|
|
|
|
/* acc = A0 * x[n] */
|
|
acc = (q63_t) S->A0 * in;
|
|
|
|
/* acc += A1 * x[n-1] */
|
|
acc += (q63_t) S->A1 * S->state[0];
|
|
|
|
/* acc += A2 * x[n-2] */
|
|
acc += (q63_t) S->A2 * S->state[1];
|
|
|
|
/* convert output to 1.31 format to add y[n-1] */
|
|
out = (q31_t) (acc >> 31u);
|
|
|
|
/* out += y[n-1] */
|
|
out += S->state[2];
|
|
|
|
/* Update state */
|
|
S->state[1] = S->state[0];
|
|
S->state[0] = in;
|
|
S->state[2] = out;
|
|
|
|
/* return to application */
|
|
return (out);
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Process function for the Q15 PID Control.
|
|
* @param[in,out] *S points to an instance of the Q15 PID Control structure
|
|
* @param[in] in input sample to process
|
|
* @return out processed output sample.
|
|
*
|
|
* <b>Scaling and Overflow Behavior:</b>
|
|
* \par
|
|
* The function is implemented using a 64-bit internal accumulator.
|
|
* Both Gains and state variables are represented in 1.15 format and multiplications yield a 2.30 result.
|
|
* The 2.30 intermediate results are accumulated in a 64-bit accumulator in 34.30 format.
|
|
* There is no risk of internal overflow with this approach and the full precision of intermediate multiplications is preserved.
|
|
* After all additions have been performed, the accumulator is truncated to 34.15 format by discarding low 15 bits.
|
|
* Lastly, the accumulator is saturated to yield a result in 1.15 format.
|
|
*/
|
|
|
|
static __INLINE q15_t arm_pid_q15(
|
|
arm_pid_instance_q15 * S,
|
|
q15_t in)
|
|
{
|
|
q63_t acc;
|
|
q15_t out;
|
|
|
|
#ifndef ARM_MATH_CM0_FAMILY
|
|
__SIMD32_TYPE *vstate;
|
|
|
|
/* Implementation of PID controller */
|
|
|
|
/* acc = A0 * x[n] */
|
|
acc = (q31_t) __SMUAD(S->A0, in);
|
|
|
|
/* acc += A1 * x[n-1] + A2 * x[n-2] */
|
|
vstate = __SIMD32_CONST(S->state);
|
|
acc = __SMLALD(S->A1, (q31_t) *vstate, acc);
|
|
|
|
#else
|
|
/* acc = A0 * x[n] */
|
|
acc = ((q31_t) S->A0) * in;
|
|
|
|
/* acc += A1 * x[n-1] + A2 * x[n-2] */
|
|
acc += (q31_t) S->A1 * S->state[0];
|
|
acc += (q31_t) S->A2 * S->state[1];
|
|
|
|
#endif
|
|
|
|
/* acc += y[n-1] */
|
|
acc += (q31_t) S->state[2] << 15;
|
|
|
|
/* saturate the output */
|
|
out = (q15_t) (__SSAT((acc >> 15), 16));
|
|
|
|
/* Update state */
|
|
S->state[1] = S->state[0];
|
|
S->state[0] = in;
|
|
S->state[2] = out;
|
|
|
|
/* return to application */
|
|
return (out);
|
|
|
|
}
|
|
|
|
/**
|
|
* @} end of PID group
|
|
*/
|
|
|
|
|
|
/**
|
|
* @brief Floating-point matrix inverse.
|
|
* @param[in] *src points to the instance of the input floating-point matrix structure.
|
|
* @param[out] *dst points to the instance of the output floating-point matrix structure.
|
|
* @return The function returns ARM_MATH_SIZE_MISMATCH, if the dimensions do not match.
|
|
* If the input matrix is singular (does not have an inverse), then the algorithm terminates and returns error status ARM_MATH_SINGULAR.
|
|
*/
|
|
|
|
arm_status arm_mat_inverse_f32(
|
|
const arm_matrix_instance_f32 * src,
|
|
arm_matrix_instance_f32 * dst);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point matrix inverse.
|
|
* @param[in] *src points to the instance of the input floating-point matrix structure.
|
|
* @param[out] *dst points to the instance of the output floating-point matrix structure.
|
|
* @return The function returns ARM_MATH_SIZE_MISMATCH, if the dimensions do not match.
|
|
* If the input matrix is singular (does not have an inverse), then the algorithm terminates and returns error status ARM_MATH_SINGULAR.
|
|
*/
|
|
|
|
arm_status arm_mat_inverse_f64(
|
|
const arm_matrix_instance_f64 * src,
|
|
arm_matrix_instance_f64 * dst);
|
|
|
|
|
|
|
|
/**
|
|
* @ingroup groupController
|
|
*/
|
|
|
|
|
|
/**
|
|
* @defgroup clarke Vector Clarke Transform
|
|
* Forward Clarke transform converts the instantaneous stator phases into a two-coordinate time invariant vector.
|
|
* Generally the Clarke transform uses three-phase currents <code>Ia, Ib and Ic</code> to calculate currents
|
|
* in the two-phase orthogonal stator axis <code>Ialpha</code> and <code>Ibeta</code>.
|
|
* When <code>Ialpha</code> is superposed with <code>Ia</code> as shown in the figure below
|
|
* \image html clarke.gif Stator current space vector and its components in (a,b).
|
|
* and <code>Ia + Ib + Ic = 0</code>, in this condition <code>Ialpha</code> and <code>Ibeta</code>
|
|
* can be calculated using only <code>Ia</code> and <code>Ib</code>.
|
|
*
|
|
* The function operates on a single sample of data and each call to the function returns the processed output.
|
|
* The library provides separate functions for Q31 and floating-point data types.
|
|
* \par Algorithm
|
|
* \image html clarkeFormula.gif
|
|
* where <code>Ia</code> and <code>Ib</code> are the instantaneous stator phases and
|
|
* <code>pIalpha</code> and <code>pIbeta</code> are the two coordinates of time invariant vector.
|
|
* \par Fixed-Point Behavior
|
|
* Care must be taken when using the Q31 version of the Clarke transform.
|
|
* In particular, the overflow and saturation behavior of the accumulator used must be considered.
|
|
* Refer to the function specific documentation below for usage guidelines.
|
|
*/
|
|
|
|
/**
|
|
* @addtogroup clarke
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
*
|
|
* @brief Floating-point Clarke transform
|
|
* @param[in] Ia input three-phase coordinate <code>a</code>
|
|
* @param[in] Ib input three-phase coordinate <code>b</code>
|
|
* @param[out] *pIalpha points to output two-phase orthogonal vector axis alpha
|
|
* @param[out] *pIbeta points to output two-phase orthogonal vector axis beta
|
|
* @return none.
|
|
*/
|
|
|
|
static __INLINE void arm_clarke_f32(
|
|
float32_t Ia,
|
|
float32_t Ib,
|
|
float32_t * pIalpha,
|
|
float32_t * pIbeta)
|
|
{
|
|
/* Calculate pIalpha using the equation, pIalpha = Ia */
|
|
*pIalpha = Ia;
|
|
|
|
/* Calculate pIbeta using the equation, pIbeta = (1/sqrt(3)) * Ia + (2/sqrt(3)) * Ib */
|
|
*pIbeta =
|
|
((float32_t) 0.57735026919 * Ia + (float32_t) 1.15470053838 * Ib);
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Clarke transform for Q31 version
|
|
* @param[in] Ia input three-phase coordinate <code>a</code>
|
|
* @param[in] Ib input three-phase coordinate <code>b</code>
|
|
* @param[out] *pIalpha points to output two-phase orthogonal vector axis alpha
|
|
* @param[out] *pIbeta points to output two-phase orthogonal vector axis beta
|
|
* @return none.
|
|
*
|
|
* <b>Scaling and Overflow Behavior:</b>
|
|
* \par
|
|
* The function is implemented using an internal 32-bit accumulator.
|
|
* The accumulator maintains 1.31 format by truncating lower 31 bits of the intermediate multiplication in 2.62 format.
|
|
* There is saturation on the addition, hence there is no risk of overflow.
|
|
*/
|
|
|
|
static __INLINE void arm_clarke_q31(
|
|
q31_t Ia,
|
|
q31_t Ib,
|
|
q31_t * pIalpha,
|
|
q31_t * pIbeta)
|
|
{
|
|
q31_t product1, product2; /* Temporary variables used to store intermediate results */
|
|
|
|
/* Calculating pIalpha from Ia by equation pIalpha = Ia */
|
|
*pIalpha = Ia;
|
|
|
|
/* Intermediate product is calculated by (1/(sqrt(3)) * Ia) */
|
|
product1 = (q31_t) (((q63_t) Ia * 0x24F34E8B) >> 30);
|
|
|
|
/* Intermediate product is calculated by (2/sqrt(3) * Ib) */
|
|
product2 = (q31_t) (((q63_t) Ib * 0x49E69D16) >> 30);
|
|
|
|
/* pIbeta is calculated by adding the intermediate products */
|
|
*pIbeta = __QADD(product1, product2);
|
|
}
|
|
|
|
/**
|
|
* @} end of clarke group
|
|
*/
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q7 vector to Q31 vector.
|
|
* @param[in] *pSrc input pointer
|
|
* @param[out] *pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_q7_to_q31(
|
|
q7_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
|
|
|
|
/**
|
|
* @ingroup groupController
|
|
*/
|
|
|
|
/**
|
|
* @defgroup inv_clarke Vector Inverse Clarke Transform
|
|
* Inverse Clarke transform converts the two-coordinate time invariant vector into instantaneous stator phases.
|
|
*
|
|
* The function operates on a single sample of data and each call to the function returns the processed output.
|
|
* The library provides separate functions for Q31 and floating-point data types.
|
|
* \par Algorithm
|
|
* \image html clarkeInvFormula.gif
|
|
* where <code>pIa</code> and <code>pIb</code> are the instantaneous stator phases and
|
|
* <code>Ialpha</code> and <code>Ibeta</code> are the two coordinates of time invariant vector.
|
|
* \par Fixed-Point Behavior
|
|
* Care must be taken when using the Q31 version of the Clarke transform.
|
|
* In particular, the overflow and saturation behavior of the accumulator used must be considered.
|
|
* Refer to the function specific documentation below for usage guidelines.
|
|
*/
|
|
|
|
/**
|
|
* @addtogroup inv_clarke
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Floating-point Inverse Clarke transform
|
|
* @param[in] Ialpha input two-phase orthogonal vector axis alpha
|
|
* @param[in] Ibeta input two-phase orthogonal vector axis beta
|
|
* @param[out] *pIa points to output three-phase coordinate <code>a</code>
|
|
* @param[out] *pIb points to output three-phase coordinate <code>b</code>
|
|
* @return none.
|
|
*/
|
|
|
|
|
|
static __INLINE void arm_inv_clarke_f32(
|
|
float32_t Ialpha,
|
|
float32_t Ibeta,
|
|
float32_t * pIa,
|
|
float32_t * pIb)
|
|
{
|
|
/* Calculating pIa from Ialpha by equation pIa = Ialpha */
|
|
*pIa = Ialpha;
|
|
|
|
/* Calculating pIb from Ialpha and Ibeta by equation pIb = -(1/2) * Ialpha + (sqrt(3)/2) * Ibeta */
|
|
*pIb = -0.5 * Ialpha + (float32_t) 0.8660254039 *Ibeta;
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Inverse Clarke transform for Q31 version
|
|
* @param[in] Ialpha input two-phase orthogonal vector axis alpha
|
|
* @param[in] Ibeta input two-phase orthogonal vector axis beta
|
|
* @param[out] *pIa points to output three-phase coordinate <code>a</code>
|
|
* @param[out] *pIb points to output three-phase coordinate <code>b</code>
|
|
* @return none.
|
|
*
|
|
* <b>Scaling and Overflow Behavior:</b>
|
|
* \par
|
|
* The function is implemented using an internal 32-bit accumulator.
|
|
* The accumulator maintains 1.31 format by truncating lower 31 bits of the intermediate multiplication in 2.62 format.
|
|
* There is saturation on the subtraction, hence there is no risk of overflow.
|
|
*/
|
|
|
|
static __INLINE void arm_inv_clarke_q31(
|
|
q31_t Ialpha,
|
|
q31_t Ibeta,
|
|
q31_t * pIa,
|
|
q31_t * pIb)
|
|
{
|
|
q31_t product1, product2; /* Temporary variables used to store intermediate results */
|
|
|
|
/* Calculating pIa from Ialpha by equation pIa = Ialpha */
|
|
*pIa = Ialpha;
|
|
|
|
/* Intermediate product is calculated by (1/(2*sqrt(3)) * Ia) */
|
|
product1 = (q31_t) (((q63_t) (Ialpha) * (0x40000000)) >> 31);
|
|
|
|
/* Intermediate product is calculated by (1/sqrt(3) * pIb) */
|
|
product2 = (q31_t) (((q63_t) (Ibeta) * (0x6ED9EBA1)) >> 31);
|
|
|
|
/* pIb is calculated by subtracting the products */
|
|
*pIb = __QSUB(product2, product1);
|
|
|
|
}
|
|
|
|
/**
|
|
* @} end of inv_clarke group
|
|
*/
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q7 vector to Q15 vector.
|
|
* @param[in] *pSrc input pointer
|
|
* @param[out] *pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_q7_to_q15(
|
|
q7_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
|
|
/**
|
|
* @ingroup groupController
|
|
*/
|
|
|
|
/**
|
|
* @defgroup park Vector Park Transform
|
|
*
|
|
* Forward Park transform converts the input two-coordinate vector to flux and torque components.
|
|
* The Park transform can be used to realize the transformation of the <code>Ialpha</code> and the <code>Ibeta</code> currents
|
|
* from the stationary to the moving reference frame and control the spatial relationship between
|
|
* the stator vector current and rotor flux vector.
|
|
* If we consider the d axis aligned with the rotor flux, the diagram below shows the
|
|
* current vector and the relationship from the two reference frames:
|
|
* \image html park.gif "Stator current space vector and its component in (a,b) and in the d,q rotating reference frame"
|
|
*
|
|
* The function operates on a single sample of data and each call to the function returns the processed output.
|
|
* The library provides separate functions for Q31 and floating-point data types.
|
|
* \par Algorithm
|
|
* \image html parkFormula.gif
|
|
* where <code>Ialpha</code> and <code>Ibeta</code> are the stator vector components,
|
|
* <code>pId</code> and <code>pIq</code> are rotor vector components and <code>cosVal</code> and <code>sinVal</code> are the
|
|
* cosine and sine values of theta (rotor flux position).
|
|
* \par Fixed-Point Behavior
|
|
* Care must be taken when using the Q31 version of the Park transform.
|
|
* In particular, the overflow and saturation behavior of the accumulator used must be considered.
|
|
* Refer to the function specific documentation below for usage guidelines.
|
|
*/
|
|
|
|
/**
|
|
* @addtogroup park
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Floating-point Park transform
|
|
* @param[in] Ialpha input two-phase vector coordinate alpha
|
|
* @param[in] Ibeta input two-phase vector coordinate beta
|
|
* @param[out] *pId points to output rotor reference frame d
|
|
* @param[out] *pIq points to output rotor reference frame q
|
|
* @param[in] sinVal sine value of rotation angle theta
|
|
* @param[in] cosVal cosine value of rotation angle theta
|
|
* @return none.
|
|
*
|
|
* The function implements the forward Park transform.
|
|
*
|
|
*/
|
|
|
|
static __INLINE void arm_park_f32(
|
|
float32_t Ialpha,
|
|
float32_t Ibeta,
|
|
float32_t * pId,
|
|
float32_t * pIq,
|
|
float32_t sinVal,
|
|
float32_t cosVal)
|
|
{
|
|
/* Calculate pId using the equation, pId = Ialpha * cosVal + Ibeta * sinVal */
|
|
*pId = Ialpha * cosVal + Ibeta * sinVal;
|
|
|
|
/* Calculate pIq using the equation, pIq = - Ialpha * sinVal + Ibeta * cosVal */
|
|
*pIq = -Ialpha * sinVal + Ibeta * cosVal;
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Park transform for Q31 version
|
|
* @param[in] Ialpha input two-phase vector coordinate alpha
|
|
* @param[in] Ibeta input two-phase vector coordinate beta
|
|
* @param[out] *pId points to output rotor reference frame d
|
|
* @param[out] *pIq points to output rotor reference frame q
|
|
* @param[in] sinVal sine value of rotation angle theta
|
|
* @param[in] cosVal cosine value of rotation angle theta
|
|
* @return none.
|
|
*
|
|
* <b>Scaling and Overflow Behavior:</b>
|
|
* \par
|
|
* The function is implemented using an internal 32-bit accumulator.
|
|
* The accumulator maintains 1.31 format by truncating lower 31 bits of the intermediate multiplication in 2.62 format.
|
|
* There is saturation on the addition and subtraction, hence there is no risk of overflow.
|
|
*/
|
|
|
|
|
|
static __INLINE void arm_park_q31(
|
|
q31_t Ialpha,
|
|
q31_t Ibeta,
|
|
q31_t * pId,
|
|
q31_t * pIq,
|
|
q31_t sinVal,
|
|
q31_t cosVal)
|
|
{
|
|
q31_t product1, product2; /* Temporary variables used to store intermediate results */
|
|
q31_t product3, product4; /* Temporary variables used to store intermediate results */
|
|
|
|
/* Intermediate product is calculated by (Ialpha * cosVal) */
|
|
product1 = (q31_t) (((q63_t) (Ialpha) * (cosVal)) >> 31);
|
|
|
|
/* Intermediate product is calculated by (Ibeta * sinVal) */
|
|
product2 = (q31_t) (((q63_t) (Ibeta) * (sinVal)) >> 31);
|
|
|
|
|
|
/* Intermediate product is calculated by (Ialpha * sinVal) */
|
|
product3 = (q31_t) (((q63_t) (Ialpha) * (sinVal)) >> 31);
|
|
|
|
/* Intermediate product is calculated by (Ibeta * cosVal) */
|
|
product4 = (q31_t) (((q63_t) (Ibeta) * (cosVal)) >> 31);
|
|
|
|
/* Calculate pId by adding the two intermediate products 1 and 2 */
|
|
*pId = __QADD(product1, product2);
|
|
|
|
/* Calculate pIq by subtracting the two intermediate products 3 from 4 */
|
|
*pIq = __QSUB(product4, product3);
|
|
}
|
|
|
|
/**
|
|
* @} end of park group
|
|
*/
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q7 vector to floating-point vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[out] *pDst is output pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_q7_to_float(
|
|
q7_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @ingroup groupController
|
|
*/
|
|
|
|
/**
|
|
* @defgroup inv_park Vector Inverse Park transform
|
|
* Inverse Park transform converts the input flux and torque components to two-coordinate vector.
|
|
*
|
|
* The function operates on a single sample of data and each call to the function returns the processed output.
|
|
* The library provides separate functions for Q31 and floating-point data types.
|
|
* \par Algorithm
|
|
* \image html parkInvFormula.gif
|
|
* where <code>pIalpha</code> and <code>pIbeta</code> are the stator vector components,
|
|
* <code>Id</code> and <code>Iq</code> are rotor vector components and <code>cosVal</code> and <code>sinVal</code> are the
|
|
* cosine and sine values of theta (rotor flux position).
|
|
* \par Fixed-Point Behavior
|
|
* Care must be taken when using the Q31 version of the Park transform.
|
|
* In particular, the overflow and saturation behavior of the accumulator used must be considered.
|
|
* Refer to the function specific documentation below for usage guidelines.
|
|
*/
|
|
|
|
/**
|
|
* @addtogroup inv_park
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Floating-point Inverse Park transform
|
|
* @param[in] Id input coordinate of rotor reference frame d
|
|
* @param[in] Iq input coordinate of rotor reference frame q
|
|
* @param[out] *pIalpha points to output two-phase orthogonal vector axis alpha
|
|
* @param[out] *pIbeta points to output two-phase orthogonal vector axis beta
|
|
* @param[in] sinVal sine value of rotation angle theta
|
|
* @param[in] cosVal cosine value of rotation angle theta
|
|
* @return none.
|
|
*/
|
|
|
|
static __INLINE void arm_inv_park_f32(
|
|
float32_t Id,
|
|
float32_t Iq,
|
|
float32_t * pIalpha,
|
|
float32_t * pIbeta,
|
|
float32_t sinVal,
|
|
float32_t cosVal)
|
|
{
|
|
/* Calculate pIalpha using the equation, pIalpha = Id * cosVal - Iq * sinVal */
|
|
*pIalpha = Id * cosVal - Iq * sinVal;
|
|
|
|
/* Calculate pIbeta using the equation, pIbeta = Id * sinVal + Iq * cosVal */
|
|
*pIbeta = Id * sinVal + Iq * cosVal;
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Inverse Park transform for Q31 version
|
|
* @param[in] Id input coordinate of rotor reference frame d
|
|
* @param[in] Iq input coordinate of rotor reference frame q
|
|
* @param[out] *pIalpha points to output two-phase orthogonal vector axis alpha
|
|
* @param[out] *pIbeta points to output two-phase orthogonal vector axis beta
|
|
* @param[in] sinVal sine value of rotation angle theta
|
|
* @param[in] cosVal cosine value of rotation angle theta
|
|
* @return none.
|
|
*
|
|
* <b>Scaling and Overflow Behavior:</b>
|
|
* \par
|
|
* The function is implemented using an internal 32-bit accumulator.
|
|
* The accumulator maintains 1.31 format by truncating lower 31 bits of the intermediate multiplication in 2.62 format.
|
|
* There is saturation on the addition, hence there is no risk of overflow.
|
|
*/
|
|
|
|
|
|
static __INLINE void arm_inv_park_q31(
|
|
q31_t Id,
|
|
q31_t Iq,
|
|
q31_t * pIalpha,
|
|
q31_t * pIbeta,
|
|
q31_t sinVal,
|
|
q31_t cosVal)
|
|
{
|
|
q31_t product1, product2; /* Temporary variables used to store intermediate results */
|
|
q31_t product3, product4; /* Temporary variables used to store intermediate results */
|
|
|
|
/* Intermediate product is calculated by (Id * cosVal) */
|
|
product1 = (q31_t) (((q63_t) (Id) * (cosVal)) >> 31);
|
|
|
|
/* Intermediate product is calculated by (Iq * sinVal) */
|
|
product2 = (q31_t) (((q63_t) (Iq) * (sinVal)) >> 31);
|
|
|
|
|
|
/* Intermediate product is calculated by (Id * sinVal) */
|
|
product3 = (q31_t) (((q63_t) (Id) * (sinVal)) >> 31);
|
|
|
|
/* Intermediate product is calculated by (Iq * cosVal) */
|
|
product4 = (q31_t) (((q63_t) (Iq) * (cosVal)) >> 31);
|
|
|
|
/* Calculate pIalpha by using the two intermediate products 1 and 2 */
|
|
*pIalpha = __QSUB(product1, product2);
|
|
|
|
/* Calculate pIbeta by using the two intermediate products 3 and 4 */
|
|
*pIbeta = __QADD(product4, product3);
|
|
|
|
}
|
|
|
|
/**
|
|
* @} end of Inverse park group
|
|
*/
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q31 vector to floating-point vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[out] *pDst is output pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_q31_to_float(
|
|
q31_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @ingroup groupInterpolation
|
|
*/
|
|
|
|
/**
|
|
* @defgroup LinearInterpolate Linear Interpolation
|
|
*
|
|
* Linear interpolation is a method of curve fitting using linear polynomials.
|
|
* Linear interpolation works by effectively drawing a straight line between two neighboring samples and returning the appropriate point along that line
|
|
*
|
|
* \par
|
|
* \image html LinearInterp.gif "Linear interpolation"
|
|
*
|
|
* \par
|
|
* A Linear Interpolate function calculates an output value(y), for the input(x)
|
|
* using linear interpolation of the input values x0, x1( nearest input values) and the output values y0 and y1(nearest output values)
|
|
*
|
|
* \par Algorithm:
|
|
* <pre>
|
|
* y = y0 + (x - x0) * ((y1 - y0)/(x1-x0))
|
|
* where x0, x1 are nearest values of input x
|
|
* y0, y1 are nearest values to output y
|
|
* </pre>
|
|
*
|
|
* \par
|
|
* This set of functions implements Linear interpolation process
|
|
* for Q7, Q15, Q31, and floating-point data types. The functions operate on a single
|
|
* sample of data and each call to the function returns a single processed value.
|
|
* <code>S</code> points to an instance of the Linear Interpolate function data structure.
|
|
* <code>x</code> is the input sample value. The functions returns the output value.
|
|
*
|
|
* \par
|
|
* if x is outside of the table boundary, Linear interpolation returns first value of the table
|
|
* if x is below input range and returns last value of table if x is above range.
|
|
*/
|
|
|
|
/**
|
|
* @addtogroup LinearInterpolate
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Process function for the floating-point Linear Interpolation Function.
|
|
* @param[in,out] *S is an instance of the floating-point Linear Interpolation structure
|
|
* @param[in] x input sample to process
|
|
* @return y processed output sample.
|
|
*
|
|
*/
|
|
|
|
static __INLINE float32_t arm_linear_interp_f32(
|
|
arm_linear_interp_instance_f32 * S,
|
|
float32_t x)
|
|
{
|
|
|
|
float32_t y;
|
|
float32_t x0, x1; /* Nearest input values */
|
|
float32_t y0, y1; /* Nearest output values */
|
|
float32_t xSpacing = S->xSpacing; /* spacing between input values */
|
|
int32_t i; /* Index variable */
|
|
float32_t *pYData = S->pYData; /* pointer to output table */
|
|
|
|
/* Calculation of index */
|
|
i = (int32_t) ((x - S->x1) / xSpacing);
|
|
|
|
if(i < 0)
|
|
{
|
|
/* Iniatilize output for below specified range as least output value of table */
|
|
y = pYData[0];
|
|
}
|
|
else if((uint32_t)i >= S->nValues)
|
|
{
|
|
/* Iniatilize output for above specified range as last output value of table */
|
|
y = pYData[S->nValues - 1];
|
|
}
|
|
else
|
|
{
|
|
/* Calculation of nearest input values */
|
|
x0 = S->x1 + i * xSpacing;
|
|
x1 = S->x1 + (i + 1) * xSpacing;
|
|
|
|
/* Read of nearest output values */
|
|
y0 = pYData[i];
|
|
y1 = pYData[i + 1];
|
|
|
|
/* Calculation of output */
|
|
y = y0 + (x - x0) * ((y1 - y0) / (x1 - x0));
|
|
|
|
}
|
|
|
|
/* returns output value */
|
|
return (y);
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @brief Process function for the Q31 Linear Interpolation Function.
|
|
* @param[in] *pYData pointer to Q31 Linear Interpolation table
|
|
* @param[in] x input sample to process
|
|
* @param[in] nValues number of table values
|
|
* @return y processed output sample.
|
|
*
|
|
* \par
|
|
* Input sample <code>x</code> is in 12.20 format which contains 12 bits for table index and 20 bits for fractional part.
|
|
* This function can support maximum of table size 2^12.
|
|
*
|
|
*/
|
|
|
|
|
|
static __INLINE q31_t arm_linear_interp_q31(
|
|
q31_t * pYData,
|
|
q31_t x,
|
|
uint32_t nValues)
|
|
{
|
|
q31_t y; /* output */
|
|
q31_t y0, y1; /* Nearest output values */
|
|
q31_t fract; /* fractional part */
|
|
int32_t index; /* Index to read nearest output values */
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
index = ((x & 0xFFF00000) >> 20);
|
|
|
|
if(index >= (int32_t)(nValues - 1))
|
|
{
|
|
return (pYData[nValues - 1]);
|
|
}
|
|
else if(index < 0)
|
|
{
|
|
return (pYData[0]);
|
|
}
|
|
else
|
|
{
|
|
|
|
/* 20 bits for the fractional part */
|
|
/* shift left by 11 to keep fract in 1.31 format */
|
|
fract = (x & 0x000FFFFF) << 11;
|
|
|
|
/* Read two nearest output values from the index in 1.31(q31) format */
|
|
y0 = pYData[index];
|
|
y1 = pYData[index + 1u];
|
|
|
|
/* Calculation of y0 * (1-fract) and y is in 2.30 format */
|
|
y = ((q31_t) ((q63_t) y0 * (0x7FFFFFFF - fract) >> 32));
|
|
|
|
/* Calculation of y0 * (1-fract) + y1 *fract and y is in 2.30 format */
|
|
y += ((q31_t) (((q63_t) y1 * fract) >> 32));
|
|
|
|
/* Convert y to 1.31 format */
|
|
return (y << 1u);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @brief Process function for the Q15 Linear Interpolation Function.
|
|
* @param[in] *pYData pointer to Q15 Linear Interpolation table
|
|
* @param[in] x input sample to process
|
|
* @param[in] nValues number of table values
|
|
* @return y processed output sample.
|
|
*
|
|
* \par
|
|
* Input sample <code>x</code> is in 12.20 format which contains 12 bits for table index and 20 bits for fractional part.
|
|
* This function can support maximum of table size 2^12.
|
|
*
|
|
*/
|
|
|
|
|
|
static __INLINE q15_t arm_linear_interp_q15(
|
|
q15_t * pYData,
|
|
q31_t x,
|
|
uint32_t nValues)
|
|
{
|
|
q63_t y; /* output */
|
|
q15_t y0, y1; /* Nearest output values */
|
|
q31_t fract; /* fractional part */
|
|
int32_t index; /* Index to read nearest output values */
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
index = ((x & 0xFFF00000) >> 20u);
|
|
|
|
if(index >= (int32_t)(nValues - 1))
|
|
{
|
|
return (pYData[nValues - 1]);
|
|
}
|
|
else if(index < 0)
|
|
{
|
|
return (pYData[0]);
|
|
}
|
|
else
|
|
{
|
|
/* 20 bits for the fractional part */
|
|
/* fract is in 12.20 format */
|
|
fract = (x & 0x000FFFFF);
|
|
|
|
/* Read two nearest output values from the index */
|
|
y0 = pYData[index];
|
|
y1 = pYData[index + 1u];
|
|
|
|
/* Calculation of y0 * (1-fract) and y is in 13.35 format */
|
|
y = ((q63_t) y0 * (0xFFFFF - fract));
|
|
|
|
/* Calculation of (y0 * (1-fract) + y1 * fract) and y is in 13.35 format */
|
|
y += ((q63_t) y1 * (fract));
|
|
|
|
/* convert y to 1.15 format */
|
|
return (y >> 20);
|
|
}
|
|
|
|
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @brief Process function for the Q7 Linear Interpolation Function.
|
|
* @param[in] *pYData pointer to Q7 Linear Interpolation table
|
|
* @param[in] x input sample to process
|
|
* @param[in] nValues number of table values
|
|
* @return y processed output sample.
|
|
*
|
|
* \par
|
|
* Input sample <code>x</code> is in 12.20 format which contains 12 bits for table index and 20 bits for fractional part.
|
|
* This function can support maximum of table size 2^12.
|
|
*/
|
|
|
|
|
|
static __INLINE q7_t arm_linear_interp_q7(
|
|
q7_t * pYData,
|
|
q31_t x,
|
|
uint32_t nValues)
|
|
{
|
|
q31_t y; /* output */
|
|
q7_t y0, y1; /* Nearest output values */
|
|
q31_t fract; /* fractional part */
|
|
uint32_t index; /* Index to read nearest output values */
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
if (x < 0)
|
|
{
|
|
return (pYData[0]);
|
|
}
|
|
index = (x >> 20) & 0xfff;
|
|
|
|
|
|
if(index >= (nValues - 1))
|
|
{
|
|
return (pYData[nValues - 1]);
|
|
}
|
|
else
|
|
{
|
|
|
|
/* 20 bits for the fractional part */
|
|
/* fract is in 12.20 format */
|
|
fract = (x & 0x000FFFFF);
|
|
|
|
/* Read two nearest output values from the index and are in 1.7(q7) format */
|
|
y0 = pYData[index];
|
|
y1 = pYData[index + 1u];
|
|
|
|
/* Calculation of y0 * (1-fract ) and y is in 13.27(q27) format */
|
|
y = ((y0 * (0xFFFFF - fract)));
|
|
|
|
/* Calculation of y1 * fract + y0 * (1-fract) and y is in 13.27(q27) format */
|
|
y += (y1 * fract);
|
|
|
|
/* convert y to 1.7(q7) format */
|
|
return (y >> 20u);
|
|
|
|
}
|
|
|
|
}
|
|
/**
|
|
* @} end of LinearInterpolate group
|
|
*/
|
|
|
|
/**
|
|
* @brief Fast approximation to the trigonometric sine function for floating-point data.
|
|
* @param[in] x input value in radians.
|
|
* @return sin(x).
|
|
*/
|
|
|
|
float32_t arm_sin_f32(
|
|
float32_t x);
|
|
|
|
/**
|
|
* @brief Fast approximation to the trigonometric sine function for Q31 data.
|
|
* @param[in] x Scaled input value in radians.
|
|
* @return sin(x).
|
|
*/
|
|
|
|
q31_t arm_sin_q31(
|
|
q31_t x);
|
|
|
|
/**
|
|
* @brief Fast approximation to the trigonometric sine function for Q15 data.
|
|
* @param[in] x Scaled input value in radians.
|
|
* @return sin(x).
|
|
*/
|
|
|
|
q15_t arm_sin_q15(
|
|
q15_t x);
|
|
|
|
/**
|
|
* @brief Fast approximation to the trigonometric cosine function for floating-point data.
|
|
* @param[in] x input value in radians.
|
|
* @return cos(x).
|
|
*/
|
|
|
|
float32_t arm_cos_f32(
|
|
float32_t x);
|
|
|
|
/**
|
|
* @brief Fast approximation to the trigonometric cosine function for Q31 data.
|
|
* @param[in] x Scaled input value in radians.
|
|
* @return cos(x).
|
|
*/
|
|
|
|
q31_t arm_cos_q31(
|
|
q31_t x);
|
|
|
|
/**
|
|
* @brief Fast approximation to the trigonometric cosine function for Q15 data.
|
|
* @param[in] x Scaled input value in radians.
|
|
* @return cos(x).
|
|
*/
|
|
|
|
q15_t arm_cos_q15(
|
|
q15_t x);
|
|
|
|
|
|
/**
|
|
* @ingroup groupFastMath
|
|
*/
|
|
|
|
|
|
/**
|
|
* @defgroup SQRT Square Root
|
|
*
|
|
* Computes the square root of a number.
|
|
* There are separate functions for Q15, Q31, and floating-point data types.
|
|
* The square root function is computed using the Newton-Raphson algorithm.
|
|
* This is an iterative algorithm of the form:
|
|
* <pre>
|
|
* x1 = x0 - f(x0)/f'(x0)
|
|
* </pre>
|
|
* where <code>x1</code> is the current estimate,
|
|
* <code>x0</code> is the previous estimate, and
|
|
* <code>f'(x0)</code> is the derivative of <code>f()</code> evaluated at <code>x0</code>.
|
|
* For the square root function, the algorithm reduces to:
|
|
* <pre>
|
|
* x0 = in/2 [initial guess]
|
|
* x1 = 1/2 * ( x0 + in / x0) [each iteration]
|
|
* </pre>
|
|
*/
|
|
|
|
|
|
/**
|
|
* @addtogroup SQRT
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Floating-point square root function.
|
|
* @param[in] in input value.
|
|
* @param[out] *pOut square root of input value.
|
|
* @return The function returns ARM_MATH_SUCCESS if input value is positive value or ARM_MATH_ARGUMENT_ERROR if
|
|
* <code>in</code> is negative value and returns zero output for negative values.
|
|
*/
|
|
|
|
static __INLINE arm_status arm_sqrt_f32(
|
|
float32_t in,
|
|
float32_t * pOut)
|
|
{
|
|
if(in >= 0.0f)
|
|
{
|
|
|
|
// #if __FPU_USED
|
|
#if (__FPU_USED == 1) && defined ( __CC_ARM )
|
|
*pOut = __sqrtf(in);
|
|
#else
|
|
*pOut = sqrtf(in);
|
|
#endif
|
|
|
|
return (ARM_MATH_SUCCESS);
|
|
}
|
|
else
|
|
{
|
|
*pOut = 0.0f;
|
|
return (ARM_MATH_ARGUMENT_ERROR);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Q31 square root function.
|
|
* @param[in] in input value. The range of the input value is [0 +1) or 0x00000000 to 0x7FFFFFFF.
|
|
* @param[out] *pOut square root of input value.
|
|
* @return The function returns ARM_MATH_SUCCESS if input value is positive value or ARM_MATH_ARGUMENT_ERROR if
|
|
* <code>in</code> is negative value and returns zero output for negative values.
|
|
*/
|
|
arm_status arm_sqrt_q31(
|
|
q31_t in,
|
|
q31_t * pOut);
|
|
|
|
/**
|
|
* @brief Q15 square root function.
|
|
* @param[in] in input value. The range of the input value is [0 +1) or 0x0000 to 0x7FFF.
|
|
* @param[out] *pOut square root of input value.
|
|
* @return The function returns ARM_MATH_SUCCESS if input value is positive value or ARM_MATH_ARGUMENT_ERROR if
|
|
* <code>in</code> is negative value and returns zero output for negative values.
|
|
*/
|
|
arm_status arm_sqrt_q15(
|
|
q15_t in,
|
|
q15_t * pOut);
|
|
|
|
/**
|
|
* @} end of SQRT group
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
* @brief floating-point Circular write function.
|
|
*/
|
|
|
|
static __INLINE void arm_circularWrite_f32(
|
|
int32_t * circBuffer,
|
|
int32_t L,
|
|
uint16_t * writeOffset,
|
|
int32_t bufferInc,
|
|
const int32_t * src,
|
|
int32_t srcInc,
|
|
uint32_t blockSize)
|
|
{
|
|
uint32_t i = 0u;
|
|
int32_t wOffset;
|
|
|
|
/* Copy the value of Index pointer that points
|
|
* to the current location where the input samples to be copied */
|
|
wOffset = *writeOffset;
|
|
|
|
/* Loop over the blockSize */
|
|
i = blockSize;
|
|
|
|
while(i > 0u)
|
|
{
|
|
/* copy the input sample to the circular buffer */
|
|
circBuffer[wOffset] = *src;
|
|
|
|
/* Update the input pointer */
|
|
src += srcInc;
|
|
|
|
/* Circularly update wOffset. Watch out for positive and negative value */
|
|
wOffset += bufferInc;
|
|
if(wOffset >= L)
|
|
wOffset -= L;
|
|
|
|
/* Decrement the loop counter */
|
|
i--;
|
|
}
|
|
|
|
/* Update the index pointer */
|
|
*writeOffset = wOffset;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* @brief floating-point Circular Read function.
|
|
*/
|
|
static __INLINE void arm_circularRead_f32(
|
|
int32_t * circBuffer,
|
|
int32_t L,
|
|
int32_t * readOffset,
|
|
int32_t bufferInc,
|
|
int32_t * dst,
|
|
int32_t * dst_base,
|
|
int32_t dst_length,
|
|
int32_t dstInc,
|
|
uint32_t blockSize)
|
|
{
|
|
uint32_t i = 0u;
|
|
int32_t rOffset, dst_end;
|
|
|
|
/* Copy the value of Index pointer that points
|
|
* to the current location from where the input samples to be read */
|
|
rOffset = *readOffset;
|
|
dst_end = (int32_t) (dst_base + dst_length);
|
|
|
|
/* Loop over the blockSize */
|
|
i = blockSize;
|
|
|
|
while(i > 0u)
|
|
{
|
|
/* copy the sample from the circular buffer to the destination buffer */
|
|
*dst = circBuffer[rOffset];
|
|
|
|
/* Update the input pointer */
|
|
dst += dstInc;
|
|
|
|
if(dst == (int32_t *) dst_end)
|
|
{
|
|
dst = dst_base;
|
|
}
|
|
|
|
/* Circularly update rOffset. Watch out for positive and negative value */
|
|
rOffset += bufferInc;
|
|
|
|
if(rOffset >= L)
|
|
{
|
|
rOffset -= L;
|
|
}
|
|
|
|
/* Decrement the loop counter */
|
|
i--;
|
|
}
|
|
|
|
/* Update the index pointer */
|
|
*readOffset = rOffset;
|
|
}
|
|
|
|
/**
|
|
* @brief Q15 Circular write function.
|
|
*/
|
|
|
|
static __INLINE void arm_circularWrite_q15(
|
|
q15_t * circBuffer,
|
|
int32_t L,
|
|
uint16_t * writeOffset,
|
|
int32_t bufferInc,
|
|
const q15_t * src,
|
|
int32_t srcInc,
|
|
uint32_t blockSize)
|
|
{
|
|
uint32_t i = 0u;
|
|
int32_t wOffset;
|
|
|
|
/* Copy the value of Index pointer that points
|
|
* to the current location where the input samples to be copied */
|
|
wOffset = *writeOffset;
|
|
|
|
/* Loop over the blockSize */
|
|
i = blockSize;
|
|
|
|
while(i > 0u)
|
|
{
|
|
/* copy the input sample to the circular buffer */
|
|
circBuffer[wOffset] = *src;
|
|
|
|
/* Update the input pointer */
|
|
src += srcInc;
|
|
|
|
/* Circularly update wOffset. Watch out for positive and negative value */
|
|
wOffset += bufferInc;
|
|
if(wOffset >= L)
|
|
wOffset -= L;
|
|
|
|
/* Decrement the loop counter */
|
|
i--;
|
|
}
|
|
|
|
/* Update the index pointer */
|
|
*writeOffset = wOffset;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* @brief Q15 Circular Read function.
|
|
*/
|
|
static __INLINE void arm_circularRead_q15(
|
|
q15_t * circBuffer,
|
|
int32_t L,
|
|
int32_t * readOffset,
|
|
int32_t bufferInc,
|
|
q15_t * dst,
|
|
q15_t * dst_base,
|
|
int32_t dst_length,
|
|
int32_t dstInc,
|
|
uint32_t blockSize)
|
|
{
|
|
uint32_t i = 0;
|
|
int32_t rOffset, dst_end;
|
|
|
|
/* Copy the value of Index pointer that points
|
|
* to the current location from where the input samples to be read */
|
|
rOffset = *readOffset;
|
|
|
|
dst_end = (int32_t) (dst_base + dst_length);
|
|
|
|
/* Loop over the blockSize */
|
|
i = blockSize;
|
|
|
|
while(i > 0u)
|
|
{
|
|
/* copy the sample from the circular buffer to the destination buffer */
|
|
*dst = circBuffer[rOffset];
|
|
|
|
/* Update the input pointer */
|
|
dst += dstInc;
|
|
|
|
if(dst == (q15_t *) dst_end)
|
|
{
|
|
dst = dst_base;
|
|
}
|
|
|
|
/* Circularly update wOffset. Watch out for positive and negative value */
|
|
rOffset += bufferInc;
|
|
|
|
if(rOffset >= L)
|
|
{
|
|
rOffset -= L;
|
|
}
|
|
|
|
/* Decrement the loop counter */
|
|
i--;
|
|
}
|
|
|
|
/* Update the index pointer */
|
|
*readOffset = rOffset;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Q7 Circular write function.
|
|
*/
|
|
|
|
static __INLINE void arm_circularWrite_q7(
|
|
q7_t * circBuffer,
|
|
int32_t L,
|
|
uint16_t * writeOffset,
|
|
int32_t bufferInc,
|
|
const q7_t * src,
|
|
int32_t srcInc,
|
|
uint32_t blockSize)
|
|
{
|
|
uint32_t i = 0u;
|
|
int32_t wOffset;
|
|
|
|
/* Copy the value of Index pointer that points
|
|
* to the current location where the input samples to be copied */
|
|
wOffset = *writeOffset;
|
|
|
|
/* Loop over the blockSize */
|
|
i = blockSize;
|
|
|
|
while(i > 0u)
|
|
{
|
|
/* copy the input sample to the circular buffer */
|
|
circBuffer[wOffset] = *src;
|
|
|
|
/* Update the input pointer */
|
|
src += srcInc;
|
|
|
|
/* Circularly update wOffset. Watch out for positive and negative value */
|
|
wOffset += bufferInc;
|
|
if(wOffset >= L)
|
|
wOffset -= L;
|
|
|
|
/* Decrement the loop counter */
|
|
i--;
|
|
}
|
|
|
|
/* Update the index pointer */
|
|
*writeOffset = wOffset;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* @brief Q7 Circular Read function.
|
|
*/
|
|
static __INLINE void arm_circularRead_q7(
|
|
q7_t * circBuffer,
|
|
int32_t L,
|
|
int32_t * readOffset,
|
|
int32_t bufferInc,
|
|
q7_t * dst,
|
|
q7_t * dst_base,
|
|
int32_t dst_length,
|
|
int32_t dstInc,
|
|
uint32_t blockSize)
|
|
{
|
|
uint32_t i = 0;
|
|
int32_t rOffset, dst_end;
|
|
|
|
/* Copy the value of Index pointer that points
|
|
* to the current location from where the input samples to be read */
|
|
rOffset = *readOffset;
|
|
|
|
dst_end = (int32_t) (dst_base + dst_length);
|
|
|
|
/* Loop over the blockSize */
|
|
i = blockSize;
|
|
|
|
while(i > 0u)
|
|
{
|
|
/* copy the sample from the circular buffer to the destination buffer */
|
|
*dst = circBuffer[rOffset];
|
|
|
|
/* Update the input pointer */
|
|
dst += dstInc;
|
|
|
|
if(dst == (q7_t *) dst_end)
|
|
{
|
|
dst = dst_base;
|
|
}
|
|
|
|
/* Circularly update rOffset. Watch out for positive and negative value */
|
|
rOffset += bufferInc;
|
|
|
|
if(rOffset >= L)
|
|
{
|
|
rOffset -= L;
|
|
}
|
|
|
|
/* Decrement the loop counter */
|
|
i--;
|
|
}
|
|
|
|
/* Update the index pointer */
|
|
*readOffset = rOffset;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Sum of the squares of the elements of a Q31 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_power_q31(
|
|
q31_t * pSrc,
|
|
uint32_t blockSize,
|
|
q63_t * pResult);
|
|
|
|
/**
|
|
* @brief Sum of the squares of the elements of a floating-point vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_power_f32(
|
|
float32_t * pSrc,
|
|
uint32_t blockSize,
|
|
float32_t * pResult);
|
|
|
|
/**
|
|
* @brief Sum of the squares of the elements of a Q15 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_power_q15(
|
|
q15_t * pSrc,
|
|
uint32_t blockSize,
|
|
q63_t * pResult);
|
|
|
|
/**
|
|
* @brief Sum of the squares of the elements of a Q7 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_power_q7(
|
|
q7_t * pSrc,
|
|
uint32_t blockSize,
|
|
q31_t * pResult);
|
|
|
|
/**
|
|
* @brief Mean value of a Q7 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_mean_q7(
|
|
q7_t * pSrc,
|
|
uint32_t blockSize,
|
|
q7_t * pResult);
|
|
|
|
/**
|
|
* @brief Mean value of a Q15 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
void arm_mean_q15(
|
|
q15_t * pSrc,
|
|
uint32_t blockSize,
|
|
q15_t * pResult);
|
|
|
|
/**
|
|
* @brief Mean value of a Q31 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
void arm_mean_q31(
|
|
q31_t * pSrc,
|
|
uint32_t blockSize,
|
|
q31_t * pResult);
|
|
|
|
/**
|
|
* @brief Mean value of a floating-point vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
void arm_mean_f32(
|
|
float32_t * pSrc,
|
|
uint32_t blockSize,
|
|
float32_t * pResult);
|
|
|
|
/**
|
|
* @brief Variance of the elements of a floating-point vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_var_f32(
|
|
float32_t * pSrc,
|
|
uint32_t blockSize,
|
|
float32_t * pResult);
|
|
|
|
/**
|
|
* @brief Variance of the elements of a Q31 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_var_q31(
|
|
q31_t * pSrc,
|
|
uint32_t blockSize,
|
|
q31_t * pResult);
|
|
|
|
/**
|
|
* @brief Variance of the elements of a Q15 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_var_q15(
|
|
q15_t * pSrc,
|
|
uint32_t blockSize,
|
|
q15_t * pResult);
|
|
|
|
/**
|
|
* @brief Root Mean Square of the elements of a floating-point vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_rms_f32(
|
|
float32_t * pSrc,
|
|
uint32_t blockSize,
|
|
float32_t * pResult);
|
|
|
|
/**
|
|
* @brief Root Mean Square of the elements of a Q31 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_rms_q31(
|
|
q31_t * pSrc,
|
|
uint32_t blockSize,
|
|
q31_t * pResult);
|
|
|
|
/**
|
|
* @brief Root Mean Square of the elements of a Q15 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_rms_q15(
|
|
q15_t * pSrc,
|
|
uint32_t blockSize,
|
|
q15_t * pResult);
|
|
|
|
/**
|
|
* @brief Standard deviation of the elements of a floating-point vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_std_f32(
|
|
float32_t * pSrc,
|
|
uint32_t blockSize,
|
|
float32_t * pResult);
|
|
|
|
/**
|
|
* @brief Standard deviation of the elements of a Q31 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_std_q31(
|
|
q31_t * pSrc,
|
|
uint32_t blockSize,
|
|
q31_t * pResult);
|
|
|
|
/**
|
|
* @brief Standard deviation of the elements of a Q15 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output value.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_std_q15(
|
|
q15_t * pSrc,
|
|
uint32_t blockSize,
|
|
q15_t * pResult);
|
|
|
|
/**
|
|
* @brief Floating-point complex magnitude
|
|
* @param[in] *pSrc points to the complex input vector
|
|
* @param[out] *pDst points to the real output vector
|
|
* @param[in] numSamples number of complex samples in the input vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_mag_f32(
|
|
float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
/**
|
|
* @brief Q31 complex magnitude
|
|
* @param[in] *pSrc points to the complex input vector
|
|
* @param[out] *pDst points to the real output vector
|
|
* @param[in] numSamples number of complex samples in the input vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_mag_q31(
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
/**
|
|
* @brief Q15 complex magnitude
|
|
* @param[in] *pSrc points to the complex input vector
|
|
* @param[out] *pDst points to the real output vector
|
|
* @param[in] numSamples number of complex samples in the input vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_mag_q15(
|
|
q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
/**
|
|
* @brief Q15 complex dot product
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
* @param[out] *realResult real part of the result returned here
|
|
* @param[out] *imagResult imaginary part of the result returned here
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_dot_prod_q15(
|
|
q15_t * pSrcA,
|
|
q15_t * pSrcB,
|
|
uint32_t numSamples,
|
|
q31_t * realResult,
|
|
q31_t * imagResult);
|
|
|
|
/**
|
|
* @brief Q31 complex dot product
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
* @param[out] *realResult real part of the result returned here
|
|
* @param[out] *imagResult imaginary part of the result returned here
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_dot_prod_q31(
|
|
q31_t * pSrcA,
|
|
q31_t * pSrcB,
|
|
uint32_t numSamples,
|
|
q63_t * realResult,
|
|
q63_t * imagResult);
|
|
|
|
/**
|
|
* @brief Floating-point complex dot product
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
* @param[out] *realResult real part of the result returned here
|
|
* @param[out] *imagResult imaginary part of the result returned here
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_dot_prod_f32(
|
|
float32_t * pSrcA,
|
|
float32_t * pSrcB,
|
|
uint32_t numSamples,
|
|
float32_t * realResult,
|
|
float32_t * imagResult);
|
|
|
|
/**
|
|
* @brief Q15 complex-by-real multiplication
|
|
* @param[in] *pSrcCmplx points to the complex input vector
|
|
* @param[in] *pSrcReal points to the real input vector
|
|
* @param[out] *pCmplxDst points to the complex output vector
|
|
* @param[in] numSamples number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_mult_real_q15(
|
|
q15_t * pSrcCmplx,
|
|
q15_t * pSrcReal,
|
|
q15_t * pCmplxDst,
|
|
uint32_t numSamples);
|
|
|
|
/**
|
|
* @brief Q31 complex-by-real multiplication
|
|
* @param[in] *pSrcCmplx points to the complex input vector
|
|
* @param[in] *pSrcReal points to the real input vector
|
|
* @param[out] *pCmplxDst points to the complex output vector
|
|
* @param[in] numSamples number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_mult_real_q31(
|
|
q31_t * pSrcCmplx,
|
|
q31_t * pSrcReal,
|
|
q31_t * pCmplxDst,
|
|
uint32_t numSamples);
|
|
|
|
/**
|
|
* @brief Floating-point complex-by-real multiplication
|
|
* @param[in] *pSrcCmplx points to the complex input vector
|
|
* @param[in] *pSrcReal points to the real input vector
|
|
* @param[out] *pCmplxDst points to the complex output vector
|
|
* @param[in] numSamples number of samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_mult_real_f32(
|
|
float32_t * pSrcCmplx,
|
|
float32_t * pSrcReal,
|
|
float32_t * pCmplxDst,
|
|
uint32_t numSamples);
|
|
|
|
/**
|
|
* @brief Minimum value of a Q7 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *result is output pointer
|
|
* @param[in] index is the array index of the minimum value in the input buffer.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_min_q7(
|
|
q7_t * pSrc,
|
|
uint32_t blockSize,
|
|
q7_t * result,
|
|
uint32_t * index);
|
|
|
|
/**
|
|
* @brief Minimum value of a Q15 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output pointer
|
|
* @param[in] *pIndex is the array index of the minimum value in the input buffer.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_min_q15(
|
|
q15_t * pSrc,
|
|
uint32_t blockSize,
|
|
q15_t * pResult,
|
|
uint32_t * pIndex);
|
|
|
|
/**
|
|
* @brief Minimum value of a Q31 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output pointer
|
|
* @param[out] *pIndex is the array index of the minimum value in the input buffer.
|
|
* @return none.
|
|
*/
|
|
void arm_min_q31(
|
|
q31_t * pSrc,
|
|
uint32_t blockSize,
|
|
q31_t * pResult,
|
|
uint32_t * pIndex);
|
|
|
|
/**
|
|
* @brief Minimum value of a floating-point vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] *pResult is output pointer
|
|
* @param[out] *pIndex is the array index of the minimum value in the input buffer.
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_min_f32(
|
|
float32_t * pSrc,
|
|
uint32_t blockSize,
|
|
float32_t * pResult,
|
|
uint32_t * pIndex);
|
|
|
|
/**
|
|
* @brief Maximum value of a Q7 vector.
|
|
* @param[in] *pSrc points to the input buffer
|
|
* @param[in] blockSize length of the input vector
|
|
* @param[out] *pResult maximum value returned here
|
|
* @param[out] *pIndex index of maximum value returned here
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_max_q7(
|
|
q7_t * pSrc,
|
|
uint32_t blockSize,
|
|
q7_t * pResult,
|
|
uint32_t * pIndex);
|
|
|
|
/**
|
|
* @brief Maximum value of a Q15 vector.
|
|
* @param[in] *pSrc points to the input buffer
|
|
* @param[in] blockSize length of the input vector
|
|
* @param[out] *pResult maximum value returned here
|
|
* @param[out] *pIndex index of maximum value returned here
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_max_q15(
|
|
q15_t * pSrc,
|
|
uint32_t blockSize,
|
|
q15_t * pResult,
|
|
uint32_t * pIndex);
|
|
|
|
/**
|
|
* @brief Maximum value of a Q31 vector.
|
|
* @param[in] *pSrc points to the input buffer
|
|
* @param[in] blockSize length of the input vector
|
|
* @param[out] *pResult maximum value returned here
|
|
* @param[out] *pIndex index of maximum value returned here
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_max_q31(
|
|
q31_t * pSrc,
|
|
uint32_t blockSize,
|
|
q31_t * pResult,
|
|
uint32_t * pIndex);
|
|
|
|
/**
|
|
* @brief Maximum value of a floating-point vector.
|
|
* @param[in] *pSrc points to the input buffer
|
|
* @param[in] blockSize length of the input vector
|
|
* @param[out] *pResult maximum value returned here
|
|
* @param[out] *pIndex index of maximum value returned here
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_max_f32(
|
|
float32_t * pSrc,
|
|
uint32_t blockSize,
|
|
float32_t * pResult,
|
|
uint32_t * pIndex);
|
|
|
|
/**
|
|
* @brief Q15 complex-by-complex multiplication
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_mult_cmplx_q15(
|
|
q15_t * pSrcA,
|
|
q15_t * pSrcB,
|
|
q15_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
/**
|
|
* @brief Q31 complex-by-complex multiplication
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_mult_cmplx_q31(
|
|
q31_t * pSrcA,
|
|
q31_t * pSrcB,
|
|
q31_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
/**
|
|
* @brief Floating-point complex-by-complex multiplication
|
|
* @param[in] *pSrcA points to the first input vector
|
|
* @param[in] *pSrcB points to the second input vector
|
|
* @param[out] *pDst points to the output vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
* @return none.
|
|
*/
|
|
|
|
void arm_cmplx_mult_cmplx_f32(
|
|
float32_t * pSrcA,
|
|
float32_t * pSrcB,
|
|
float32_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
/**
|
|
* @brief Converts the elements of the floating-point vector to Q31 vector.
|
|
* @param[in] *pSrc points to the floating-point input vector
|
|
* @param[out] *pDst points to the Q31 output vector
|
|
* @param[in] blockSize length of the input vector
|
|
* @return none.
|
|
*/
|
|
void arm_float_to_q31(
|
|
float32_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Converts the elements of the floating-point vector to Q15 vector.
|
|
* @param[in] *pSrc points to the floating-point input vector
|
|
* @param[out] *pDst points to the Q15 output vector
|
|
* @param[in] blockSize length of the input vector
|
|
* @return none
|
|
*/
|
|
void arm_float_to_q15(
|
|
float32_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Converts the elements of the floating-point vector to Q7 vector.
|
|
* @param[in] *pSrc points to the floating-point input vector
|
|
* @param[out] *pDst points to the Q7 output vector
|
|
* @param[in] blockSize length of the input vector
|
|
* @return none
|
|
*/
|
|
void arm_float_to_q7(
|
|
float32_t * pSrc,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q31 vector to Q15 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[out] *pDst is output pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_q31_to_q15(
|
|
q31_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q31 vector to Q7 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[out] *pDst is output pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_q31_to_q7(
|
|
q31_t * pSrc,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q15 vector to floating-point vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[out] *pDst is output pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_q15_to_float(
|
|
q15_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q15 vector to Q31 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[out] *pDst is output pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_q15_to_q31(
|
|
q15_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q15 vector to Q7 vector.
|
|
* @param[in] *pSrc is input pointer
|
|
* @param[out] *pDst is output pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @return none.
|
|
*/
|
|
void arm_q15_to_q7(
|
|
q15_t * pSrc,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @ingroup groupInterpolation
|
|
*/
|
|
|
|
/**
|
|
* @defgroup BilinearInterpolate Bilinear Interpolation
|
|
*
|
|
* Bilinear interpolation is an extension of linear interpolation applied to a two dimensional grid.
|
|
* The underlying function <code>f(x, y)</code> is sampled on a regular grid and the interpolation process
|
|
* determines values between the grid points.
|
|
* Bilinear interpolation is equivalent to two step linear interpolation, first in the x-dimension and then in the y-dimension.
|
|
* Bilinear interpolation is often used in image processing to rescale images.
|
|
* The CMSIS DSP library provides bilinear interpolation functions for Q7, Q15, Q31, and floating-point data types.
|
|
*
|
|
* <b>Algorithm</b>
|
|
* \par
|
|
* The instance structure used by the bilinear interpolation functions describes a two dimensional data table.
|
|
* For floating-point, the instance structure is defined as:
|
|
* <pre>
|
|
* typedef struct
|
|
* {
|
|
* uint16_t numRows;
|
|
* uint16_t numCols;
|
|
* float32_t *pData;
|
|
* } arm_bilinear_interp_instance_f32;
|
|
* </pre>
|
|
*
|
|
* \par
|
|
* where <code>numRows</code> specifies the number of rows in the table;
|
|
* <code>numCols</code> specifies the number of columns in the table;
|
|
* and <code>pData</code> points to an array of size <code>numRows*numCols</code> values.
|
|
* The data table <code>pTable</code> is organized in row order and the supplied data values fall on integer indexes.
|
|
* That is, table element (x,y) is located at <code>pTable[x + y*numCols]</code> where x and y are integers.
|
|
*
|
|
* \par
|
|
* Let <code>(x, y)</code> specify the desired interpolation point. Then define:
|
|
* <pre>
|
|
* XF = floor(x)
|
|
* YF = floor(y)
|
|
* </pre>
|
|
* \par
|
|
* The interpolated output point is computed as:
|
|
* <pre>
|
|
* f(x, y) = f(XF, YF) * (1-(x-XF)) * (1-(y-YF))
|
|
* + f(XF+1, YF) * (x-XF)*(1-(y-YF))
|
|
* + f(XF, YF+1) * (1-(x-XF))*(y-YF)
|
|
* + f(XF+1, YF+1) * (x-XF)*(y-YF)
|
|
* </pre>
|
|
* Note that the coordinates (x, y) contain integer and fractional components.
|
|
* The integer components specify which portion of the table to use while the
|
|
* fractional components control the interpolation processor.
|
|
*
|
|
* \par
|
|
* if (x,y) are outside of the table boundary, Bilinear interpolation returns zero output.
|
|
*/
|
|
|
|
/**
|
|
* @addtogroup BilinearInterpolate
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
*
|
|
* @brief Floating-point bilinear interpolation.
|
|
* @param[in,out] *S points to an instance of the interpolation structure.
|
|
* @param[in] X interpolation coordinate.
|
|
* @param[in] Y interpolation coordinate.
|
|
* @return out interpolated value.
|
|
*/
|
|
|
|
|
|
static __INLINE float32_t arm_bilinear_interp_f32(
|
|
const arm_bilinear_interp_instance_f32 * S,
|
|
float32_t X,
|
|
float32_t Y)
|
|
{
|
|
float32_t out;
|
|
float32_t f00, f01, f10, f11;
|
|
float32_t *pData = S->pData;
|
|
int32_t xIndex, yIndex, index;
|
|
float32_t xdiff, ydiff;
|
|
float32_t b1, b2, b3, b4;
|
|
|
|
xIndex = (int32_t) X;
|
|
yIndex = (int32_t) Y;
|
|
|
|
/* Care taken for table outside boundary */
|
|
/* Returns zero output when values are outside table boundary */
|
|
if(xIndex < 0 || xIndex > (S->numRows - 1) || yIndex < 0
|
|
|| yIndex > (S->numCols - 1))
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
/* Calculation of index for two nearest points in X-direction */
|
|
index = (xIndex - 1) + (yIndex - 1) * S->numCols;
|
|
|
|
|
|
/* Read two nearest points in X-direction */
|
|
f00 = pData[index];
|
|
f01 = pData[index + 1];
|
|
|
|
/* Calculation of index for two nearest points in Y-direction */
|
|
index = (xIndex - 1) + (yIndex) * S->numCols;
|
|
|
|
|
|
/* Read two nearest points in Y-direction */
|
|
f10 = pData[index];
|
|
f11 = pData[index + 1];
|
|
|
|
/* Calculation of intermediate values */
|
|
b1 = f00;
|
|
b2 = f01 - f00;
|
|
b3 = f10 - f00;
|
|
b4 = f00 - f01 - f10 + f11;
|
|
|
|
/* Calculation of fractional part in X */
|
|
xdiff = X - xIndex;
|
|
|
|
/* Calculation of fractional part in Y */
|
|
ydiff = Y - yIndex;
|
|
|
|
/* Calculation of bi-linear interpolated output */
|
|
out = b1 + b2 * xdiff + b3 * ydiff + b4 * xdiff * ydiff;
|
|
|
|
/* return to application */
|
|
return (out);
|
|
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @brief Q31 bilinear interpolation.
|
|
* @param[in,out] *S points to an instance of the interpolation structure.
|
|
* @param[in] X interpolation coordinate in 12.20 format.
|
|
* @param[in] Y interpolation coordinate in 12.20 format.
|
|
* @return out interpolated value.
|
|
*/
|
|
|
|
static __INLINE q31_t arm_bilinear_interp_q31(
|
|
arm_bilinear_interp_instance_q31 * S,
|
|
q31_t X,
|
|
q31_t Y)
|
|
{
|
|
q31_t out; /* Temporary output */
|
|
q31_t acc = 0; /* output */
|
|
q31_t xfract, yfract; /* X, Y fractional parts */
|
|
q31_t x1, x2, y1, y2; /* Nearest output values */
|
|
int32_t rI, cI; /* Row and column indices */
|
|
q31_t *pYData = S->pData; /* pointer to output table values */
|
|
uint32_t nCols = S->numCols; /* num of rows */
|
|
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
rI = ((X & 0xFFF00000) >> 20u);
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
cI = ((Y & 0xFFF00000) >> 20u);
|
|
|
|
/* Care taken for table outside boundary */
|
|
/* Returns zero output when values are outside table boundary */
|
|
if(rI < 0 || rI > (S->numRows - 1) || cI < 0 || cI > (S->numCols - 1))
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
/* 20 bits for the fractional part */
|
|
/* shift left xfract by 11 to keep 1.31 format */
|
|
xfract = (X & 0x000FFFFF) << 11u;
|
|
|
|
/* Read two nearest output values from the index */
|
|
x1 = pYData[(rI) + nCols * (cI)];
|
|
x2 = pYData[(rI) + nCols * (cI) + 1u];
|
|
|
|
/* 20 bits for the fractional part */
|
|
/* shift left yfract by 11 to keep 1.31 format */
|
|
yfract = (Y & 0x000FFFFF) << 11u;
|
|
|
|
/* Read two nearest output values from the index */
|
|
y1 = pYData[(rI) + nCols * (cI + 1)];
|
|
y2 = pYData[(rI) + nCols * (cI + 1) + 1u];
|
|
|
|
/* Calculation of x1 * (1-xfract ) * (1-yfract) and acc is in 3.29(q29) format */
|
|
out = ((q31_t) (((q63_t) x1 * (0x7FFFFFFF - xfract)) >> 32));
|
|
acc = ((q31_t) (((q63_t) out * (0x7FFFFFFF - yfract)) >> 32));
|
|
|
|
/* x2 * (xfract) * (1-yfract) in 3.29(q29) and adding to acc */
|
|
out = ((q31_t) ((q63_t) x2 * (0x7FFFFFFF - yfract) >> 32));
|
|
acc += ((q31_t) ((q63_t) out * (xfract) >> 32));
|
|
|
|
/* y1 * (1 - xfract) * (yfract) in 3.29(q29) and adding to acc */
|
|
out = ((q31_t) ((q63_t) y1 * (0x7FFFFFFF - xfract) >> 32));
|
|
acc += ((q31_t) ((q63_t) out * (yfract) >> 32));
|
|
|
|
/* y2 * (xfract) * (yfract) in 3.29(q29) and adding to acc */
|
|
out = ((q31_t) ((q63_t) y2 * (xfract) >> 32));
|
|
acc += ((q31_t) ((q63_t) out * (yfract) >> 32));
|
|
|
|
/* Convert acc to 1.31(q31) format */
|
|
return (acc << 2u);
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Q15 bilinear interpolation.
|
|
* @param[in,out] *S points to an instance of the interpolation structure.
|
|
* @param[in] X interpolation coordinate in 12.20 format.
|
|
* @param[in] Y interpolation coordinate in 12.20 format.
|
|
* @return out interpolated value.
|
|
*/
|
|
|
|
static __INLINE q15_t arm_bilinear_interp_q15(
|
|
arm_bilinear_interp_instance_q15 * S,
|
|
q31_t X,
|
|
q31_t Y)
|
|
{
|
|
q63_t acc = 0; /* output */
|
|
q31_t out; /* Temporary output */
|
|
q15_t x1, x2, y1, y2; /* Nearest output values */
|
|
q31_t xfract, yfract; /* X, Y fractional parts */
|
|
int32_t rI, cI; /* Row and column indices */
|
|
q15_t *pYData = S->pData; /* pointer to output table values */
|
|
uint32_t nCols = S->numCols; /* num of rows */
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
rI = ((X & 0xFFF00000) >> 20);
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
cI = ((Y & 0xFFF00000) >> 20);
|
|
|
|
/* Care taken for table outside boundary */
|
|
/* Returns zero output when values are outside table boundary */
|
|
if(rI < 0 || rI > (S->numRows - 1) || cI < 0 || cI > (S->numCols - 1))
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
/* 20 bits for the fractional part */
|
|
/* xfract should be in 12.20 format */
|
|
xfract = (X & 0x000FFFFF);
|
|
|
|
/* Read two nearest output values from the index */
|
|
x1 = pYData[(rI) + nCols * (cI)];
|
|
x2 = pYData[(rI) + nCols * (cI) + 1u];
|
|
|
|
|
|
/* 20 bits for the fractional part */
|
|
/* yfract should be in 12.20 format */
|
|
yfract = (Y & 0x000FFFFF);
|
|
|
|
/* Read two nearest output values from the index */
|
|
y1 = pYData[(rI) + nCols * (cI + 1)];
|
|
y2 = pYData[(rI) + nCols * (cI + 1) + 1u];
|
|
|
|
/* Calculation of x1 * (1-xfract ) * (1-yfract) and acc is in 13.51 format */
|
|
|
|
/* x1 is in 1.15(q15), xfract in 12.20 format and out is in 13.35 format */
|
|
/* convert 13.35 to 13.31 by right shifting and out is in 1.31 */
|
|
out = (q31_t) (((q63_t) x1 * (0xFFFFF - xfract)) >> 4u);
|
|
acc = ((q63_t) out * (0xFFFFF - yfract));
|
|
|
|
/* x2 * (xfract) * (1-yfract) in 1.51 and adding to acc */
|
|
out = (q31_t) (((q63_t) x2 * (0xFFFFF - yfract)) >> 4u);
|
|
acc += ((q63_t) out * (xfract));
|
|
|
|
/* y1 * (1 - xfract) * (yfract) in 1.51 and adding to acc */
|
|
out = (q31_t) (((q63_t) y1 * (0xFFFFF - xfract)) >> 4u);
|
|
acc += ((q63_t) out * (yfract));
|
|
|
|
/* y2 * (xfract) * (yfract) in 1.51 and adding to acc */
|
|
out = (q31_t) (((q63_t) y2 * (xfract)) >> 4u);
|
|
acc += ((q63_t) out * (yfract));
|
|
|
|
/* acc is in 13.51 format and down shift acc by 36 times */
|
|
/* Convert out to 1.15 format */
|
|
return (acc >> 36);
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Q7 bilinear interpolation.
|
|
* @param[in,out] *S points to an instance of the interpolation structure.
|
|
* @param[in] X interpolation coordinate in 12.20 format.
|
|
* @param[in] Y interpolation coordinate in 12.20 format.
|
|
* @return out interpolated value.
|
|
*/
|
|
|
|
static __INLINE q7_t arm_bilinear_interp_q7(
|
|
arm_bilinear_interp_instance_q7 * S,
|
|
q31_t X,
|
|
q31_t Y)
|
|
{
|
|
q63_t acc = 0; /* output */
|
|
q31_t out; /* Temporary output */
|
|
q31_t xfract, yfract; /* X, Y fractional parts */
|
|
q7_t x1, x2, y1, y2; /* Nearest output values */
|
|
int32_t rI, cI; /* Row and column indices */
|
|
q7_t *pYData = S->pData; /* pointer to output table values */
|
|
uint32_t nCols = S->numCols; /* num of rows */
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
rI = ((X & 0xFFF00000) >> 20);
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
cI = ((Y & 0xFFF00000) >> 20);
|
|
|
|
/* Care taken for table outside boundary */
|
|
/* Returns zero output when values are outside table boundary */
|
|
if(rI < 0 || rI > (S->numRows - 1) || cI < 0 || cI > (S->numCols - 1))
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
/* 20 bits for the fractional part */
|
|
/* xfract should be in 12.20 format */
|
|
xfract = (X & 0x000FFFFF);
|
|
|
|
/* Read two nearest output values from the index */
|
|
x1 = pYData[(rI) + nCols * (cI)];
|
|
x2 = pYData[(rI) + nCols * (cI) + 1u];
|
|
|
|
|
|
/* 20 bits for the fractional part */
|
|
/* yfract should be in 12.20 format */
|
|
yfract = (Y & 0x000FFFFF);
|
|
|
|
/* Read two nearest output values from the index */
|
|
y1 = pYData[(rI) + nCols * (cI + 1)];
|
|
y2 = pYData[(rI) + nCols * (cI + 1) + 1u];
|
|
|
|
/* Calculation of x1 * (1-xfract ) * (1-yfract) and acc is in 16.47 format */
|
|
out = ((x1 * (0xFFFFF - xfract)));
|
|
acc = (((q63_t) out * (0xFFFFF - yfract)));
|
|
|
|
/* x2 * (xfract) * (1-yfract) in 2.22 and adding to acc */
|
|
out = ((x2 * (0xFFFFF - yfract)));
|
|
acc += (((q63_t) out * (xfract)));
|
|
|
|
/* y1 * (1 - xfract) * (yfract) in 2.22 and adding to acc */
|
|
out = ((y1 * (0xFFFFF - xfract)));
|
|
acc += (((q63_t) out * (yfract)));
|
|
|
|
/* y2 * (xfract) * (yfract) in 2.22 and adding to acc */
|
|
out = ((y2 * (yfract)));
|
|
acc += (((q63_t) out * (xfract)));
|
|
|
|
/* acc in 16.47 format and down shift by 40 to convert to 1.7 format */
|
|
return (acc >> 40);
|
|
|
|
}
|
|
|
|
/**
|
|
* @} end of BilinearInterpolate group
|
|
*/
|
|
|
|
|
|
//SMMLAR
|
|
#define multAcc_32x32_keep32_R(a, x, y) \
|
|
a = (q31_t) (((((q63_t) a) << 32) + ((q63_t) x * y) + 0x80000000LL ) >> 32)
|
|
|
|
//SMMLSR
|
|
#define multSub_32x32_keep32_R(a, x, y) \
|
|
a = (q31_t) (((((q63_t) a) << 32) - ((q63_t) x * y) + 0x80000000LL ) >> 32)
|
|
|
|
//SMMULR
|
|
#define mult_32x32_keep32_R(a, x, y) \
|
|
a = (q31_t) (((q63_t) x * y + 0x80000000LL ) >> 32)
|
|
|
|
//SMMLA
|
|
#define multAcc_32x32_keep32(a, x, y) \
|
|
a += (q31_t) (((q63_t) x * y) >> 32)
|
|
|
|
//SMMLS
|
|
#define multSub_32x32_keep32(a, x, y) \
|
|
a -= (q31_t) (((q63_t) x * y) >> 32)
|
|
|
|
//SMMUL
|
|
#define mult_32x32_keep32(a, x, y) \
|
|
a = (q31_t) (((q63_t) x * y ) >> 32)
|
|
|
|
|
|
#if defined ( __CC_ARM ) //Keil
|
|
|
|
//Enter low optimization region - place directly above function definition
|
|
#ifdef ARM_MATH_CM4
|
|
#define LOW_OPTIMIZATION_ENTER \
|
|
_Pragma ("push") \
|
|
_Pragma ("O1")
|
|
#else
|
|
#define LOW_OPTIMIZATION_ENTER
|
|
#endif
|
|
|
|
//Exit low optimization region - place directly after end of function definition
|
|
#ifdef ARM_MATH_CM4
|
|
#define LOW_OPTIMIZATION_EXIT \
|
|
_Pragma ("pop")
|
|
#else
|
|
#define LOW_OPTIMIZATION_EXIT
|
|
#endif
|
|
|
|
//Enter low optimization region - place directly above function definition
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER
|
|
|
|
//Exit low optimization region - place directly after end of function definition
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_EXIT
|
|
|
|
#elif defined(__ICCARM__) //IAR
|
|
|
|
//Enter low optimization region - place directly above function definition
|
|
#ifdef ARM_MATH_CM4
|
|
#define LOW_OPTIMIZATION_ENTER \
|
|
_Pragma ("optimize=low")
|
|
#else
|
|
#define LOW_OPTIMIZATION_ENTER
|
|
#endif
|
|
|
|
//Exit low optimization region - place directly after end of function definition
|
|
#define LOW_OPTIMIZATION_EXIT
|
|
|
|
//Enter low optimization region - place directly above function definition
|
|
#ifdef ARM_MATH_CM4
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER \
|
|
_Pragma ("optimize=low")
|
|
#else
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER
|
|
#endif
|
|
|
|
//Exit low optimization region - place directly after end of function definition
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_EXIT
|
|
|
|
#elif defined(__GNUC__)
|
|
|
|
#define LOW_OPTIMIZATION_ENTER __attribute__(( optimize("-O1") ))
|
|
|
|
#define LOW_OPTIMIZATION_EXIT
|
|
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER
|
|
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_EXIT
|
|
|
|
#elif defined(__CSMC__) // Cosmic
|
|
|
|
#define LOW_OPTIMIZATION_ENTER
|
|
#define LOW_OPTIMIZATION_EXIT
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_EXIT
|
|
|
|
#elif defined(__TASKING__) // TASKING
|
|
|
|
#define LOW_OPTIMIZATION_ENTER
|
|
#define LOW_OPTIMIZATION_EXIT
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_EXIT
|
|
|
|
#endif
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
|
|
#endif /* _ARM_MATH_H */
|
|
|
|
/**
|
|
*
|
|
* End of file.
|
|
*/
|