From 94f94260ace13688285fc8c62687079b26c18854 Mon Sep 17 00:00:00 2001 From: jaseg Date: Sun, 20 Dec 2020 15:18:02 +0100 Subject: Submodule-cache WIP --- .../arm_graphic_equalizer_example/math_helper.c | 466 --------------------- 1 file changed, 466 deletions(-) delete mode 100644 fw/midi-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_graphic_equalizer_example/math_helper.c (limited to 'fw/midi-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_graphic_equalizer_example/math_helper.c') diff --git a/fw/midi-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_graphic_equalizer_example/math_helper.c b/fw/midi-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_graphic_equalizer_example/math_helper.c deleted file mode 100644 index f615e6f..0000000 --- a/fw/midi-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_graphic_equalizer_example/math_helper.c +++ /dev/null @@ -1,466 +0,0 @@ -/* ---------------------------------------------------------------------- -* Copyright (C) 2010-2012 ARM Limited. All rights reserved. -* -* $Date: 17. January 2013 -* $Revision: V1.4.0 b -* -* Project: CMSIS DSP Library -* -* Title: math_helper.c -* -* Description: Definition of all helper functions required. -* -* Target Processor: Cortex-M4/Cortex-M3 -* -* 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. -* -------------------------------------------------------------------- */ - -/* ---------------------------------------------------------------------- -* Include standard header files -* -------------------------------------------------------------------- */ -#include - -/* ---------------------------------------------------------------------- -* Include project header files -* -------------------------------------------------------------------- */ -#include "math_helper.h" - -/** - * @brief Caluclation of SNR - * @param[in] pRef Pointer to the reference buffer - * @param[in] pTest Pointer to the test buffer - * @param[in] buffSize total number of samples - * @return SNR - * The function Caluclates signal to noise ratio for the reference output - * and test output - */ - -float arm_snr_f32(float *pRef, float *pTest, uint32_t buffSize) -{ - float EnergySignal = 0.0, EnergyError = 0.0; - uint32_t i; - float SNR; - int temp; - int *test; - - for (i = 0; i < buffSize; i++) - { - /* Checking for a NAN value in pRef array */ - test = (int *)(&pRef[i]); - temp = *test; - - if (temp == 0x7FC00000) - { - return(0); - } - - /* Checking for a NAN value in pTest array */ - test = (int *)(&pTest[i]); - temp = *test; - - if (temp == 0x7FC00000) - { - return(0); - } - EnergySignal += pRef[i] * pRef[i]; - EnergyError += (pRef[i] - pTest[i]) * (pRef[i] - pTest[i]); - } - - /* Checking for a NAN value in EnergyError */ - test = (int *)(&EnergyError); - temp = *test; - - if (temp == 0x7FC00000) - { - return(0); - } - - - SNR = 10 * log10 (EnergySignal / EnergyError); - - return (SNR); - -} - - -/** - * @brief Provide guard bits for Input buffer - * @param[in,out] input_buf Pointer to input buffer - * @param[in] blockSize block Size - * @param[in] guard_bits guard bits - * @return none - * The function Provides the guard bits for the buffer - * to avoid overflow - */ - -void arm_provide_guard_bits_q15 (q15_t * input_buf, uint32_t blockSize, - uint32_t guard_bits) -{ - uint32_t i; - - for (i = 0; i < blockSize; i++) - { - input_buf[i] = input_buf[i] >> guard_bits; - } -} - -/** - * @brief Converts float to fixed in q12.20 format - * @param[in] pIn pointer to input buffer - * @param[out] pOut pointer to outputbuffer - * @param[in] numSamples number of samples in the input buffer - * @return none - * The function converts floating point values to fixed point(q12.20) values - */ - -void arm_float_to_q12_20(float *pIn, q31_t * pOut, uint32_t numSamples) -{ - uint32_t i; - - for (i = 0; i < numSamples; i++) - { - /* 1048576.0f corresponds to pow(2, 20) */ - pOut[i] = (q31_t) (pIn[i] * 1048576.0f); - - pOut[i] += pIn[i] > 0 ? 0.5 : -0.5; - - if (pIn[i] == (float) 1.0) - { - pOut[i] = 0x000FFFFF; - } - } -} - -/** - * @brief Compare MATLAB Reference Output and ARM Test output - * @param[in] pIn Pointer to Ref buffer - * @param[in] pOut Pointer to Test buffer - * @param[in] numSamples number of samples in the buffer - * @return maximum difference - */ - -uint32_t arm_compare_fixed_q15(q15_t *pIn, q15_t *pOut, uint32_t numSamples) -{ - uint32_t i; - int32_t diff, diffCrnt = 0; - uint32_t maxDiff = 0; - - for (i = 0; i < numSamples; i++) - { - diff = pIn[i] - pOut[i]; - diffCrnt = (diff > 0) ? diff : -diff; - - if (diffCrnt > maxDiff) - { - maxDiff = diffCrnt; - } - } - - return(maxDiff); -} - -/** - * @brief Compare MATLAB Reference Output and ARM Test output - * @param[in] pIn Pointer to Ref buffer - * @param[in] pOut Pointer to Test buffer - * @param[in] numSamples number of samples in the buffer - * @return maximum difference - */ - -uint32_t arm_compare_fixed_q31(q31_t *pIn, q31_t * pOut, uint32_t numSamples) -{ - uint32_t i; - int32_t diff, diffCrnt = 0; - uint32_t maxDiff = 0; - - for (i = 0; i < numSamples; i++) - { - diff = pIn[i] - pOut[i]; - diffCrnt = (diff > 0) ? diff : -diff; - - if (diffCrnt > maxDiff) - { - maxDiff = diffCrnt; - } - } - - return(maxDiff); -} - -/** - * @brief Provide guard bits for Input buffer - * @param[in,out] input_buf Pointer to input buffer - * @param[in] blockSize block Size - * @param[in] guard_bits guard bits - * @return none - * The function Provides the guard bits for the buffer - * to avoid overflow - */ - -void arm_provide_guard_bits_q31 (q31_t * input_buf, - uint32_t blockSize, - uint32_t guard_bits) -{ - uint32_t i; - - for (i = 0; i < blockSize; i++) - { - input_buf[i] = input_buf[i] >> guard_bits; - } -} - -/** - * @brief Provide guard bits for Input buffer - * @param[in,out] input_buf Pointer to input buffer - * @param[in] blockSize block Size - * @param[in] guard_bits guard bits - * @return none - * The function Provides the guard bits for the buffer - * to avoid overflow - */ - -void arm_provide_guard_bits_q7 (q7_t * input_buf, - uint32_t blockSize, - uint32_t guard_bits) -{ - uint32_t i; - - for (i = 0; i < blockSize; i++) - { - input_buf[i] = input_buf[i] >> guard_bits; - } -} - - - -/** - * @brief Caluclates number of guard bits - * @param[in] num_adds number of additions - * @return guard bits - * The function Caluclates the number of guard bits - * depending on the numtaps - */ - -uint32_t arm_calc_guard_bits (uint32_t num_adds) -{ - uint32_t i = 1, j = 0; - - if (num_adds == 1) - { - return (0); - } - - while (i < num_adds) - { - i = i * 2; - j++; - } - - return (j); -} - -/** - * @brief Apply guard bits to buffer - * @param[in,out] pIn pointer to input buffer - * @param[in] numSamples number of samples in the input buffer - * @param[in] guard_bits guard bits - * @return none - */ - -void arm_apply_guard_bits (float32_t *pIn, - uint32_t numSamples, - uint32_t guard_bits) -{ - uint32_t i; - - for (i = 0; i < numSamples; i++) - { - pIn[i] = pIn[i] * arm_calc_2pow(guard_bits); - } -} - -/** - * @brief Calculates pow(2, numShifts) - * @param[in] numShifts number of shifts - * @return pow(2, numShifts) - */ -uint32_t arm_calc_2pow(uint32_t numShifts) -{ - - uint32_t i, val = 1; - - for (i = 0; i < numShifts; i++) - { - val = val * 2; - } - - return(val); -} - - - -/** - * @brief Converts float to fixed q14 - * @param[in] pIn pointer to input buffer - * @param[out] pOut pointer to output buffer - * @param[in] numSamples number of samples in the buffer - * @return none - * The function converts floating point values to fixed point values - */ - -void arm_float_to_q14 (float *pIn, q15_t *pOut, uint32_t numSamples) -{ - uint32_t i; - - for (i = 0; i < numSamples; i++) - { - /* 16384.0f corresponds to pow(2, 14) */ - pOut[i] = (q15_t) (pIn[i] * 16384.0f); - - pOut[i] += pIn[i] > 0 ? 0.5 : -0.5; - - if (pIn[i] == (float) 2.0) - { - pOut[i] = 0x7FFF; - } - - } - -} - - -/** - * @brief Converts float to fixed q30 format - * @param[in] pIn pointer to input buffer - * @param[out] pOut pointer to output buffer - * @param[in] numSamples number of samples in the buffer - * @return none - * The function converts floating point values to fixed point values - */ - -void arm_float_to_q30 (float *pIn, q31_t * pOut, uint32_t numSamples) -{ - uint32_t i; - - for (i = 0; i < numSamples; i++) - { - /* 1073741824.0f corresponds to pow(2, 30) */ - pOut[i] = (q31_t) (pIn[i] * 1073741824.0f); - - pOut[i] += pIn[i] > 0 ? 0.5 : -0.5; - - if (pIn[i] == (float) 2.0) - { - pOut[i] = 0x7FFFFFFF; - } - } -} - -/** - * @brief Converts float to fixed q30 format - * @param[in] pIn pointer to input buffer - * @param[out] pOut pointer to output buffer - * @param[in] numSamples number of samples in the buffer - * @return none - * The function converts floating point values to fixed point values - */ - -void arm_float_to_q29 (float *pIn, q31_t *pOut, uint32_t numSamples) -{ - uint32_t i; - - for (i = 0; i < numSamples; i++) - { - /* 1073741824.0f corresponds to pow(2, 30) */ - pOut[i] = (q31_t) (pIn[i] * 536870912.0f); - - pOut[i] += pIn[i] > 0 ? 0.5 : -0.5; - - if (pIn[i] == (float) 4.0) - { - pOut[i] = 0x7FFFFFFF; - } - } -} - - -/** - * @brief Converts float to fixed q28 format - * @param[in] pIn pointer to input buffer - * @param[out] pOut pointer to output buffer - * @param[in] numSamples number of samples in the buffer - * @return none - * The function converts floating point values to fixed point values - */ - -void arm_float_to_q28 (float *pIn, q31_t *pOut, uint32_t numSamples) -{ - uint32_t i; - - for (i = 0; i < numSamples; i++) - { - /* 268435456.0f corresponds to pow(2, 28) */ - pOut[i] = (q31_t) (pIn[i] * 268435456.0f); - - pOut[i] += pIn[i] > 0 ? 0.5 : -0.5; - - if (pIn[i] == (float) 8.0) - { - pOut[i] = 0x7FFFFFFF; - } - } -} - -/** - * @brief Clip the float values to +/- 1 - * @param[in,out] pIn input buffer - * @param[in] numSamples number of samples in the buffer - * @return none - * The function converts floating point values to fixed point values - */ - -void arm_clip_f32 (float *pIn, uint32_t numSamples) -{ - uint32_t i; - - for (i = 0; i < numSamples; i++) - { - if (pIn[i] > 1.0f) - { - pIn[i] = 1.0; - } - else if ( pIn[i] < -1.0f) - { - pIn[i] = -1.0; - } - - } -} - - - - -- cgit