From 6ab94e0b318884bbcb95e2ea3835f951502e1d99 Mon Sep 17 00:00:00 2001 From: jaseg Date: Wed, 14 Oct 2020 12:47:28 +0200 Subject: Move firmware into subdirectory --- .../DSP/Source/TransformFunctions/arm_rfft_q31.c | 283 --------------------- 1 file changed, 283 deletions(-) delete mode 100644 hid-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_rfft_q31.c (limited to 'hid-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_rfft_q31.c') diff --git a/hid-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_rfft_q31.c b/hid-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_rfft_q31.c deleted file mode 100644 index d21b964..0000000 --- a/hid-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_rfft_q31.c +++ /dev/null @@ -1,283 +0,0 @@ -/* ---------------------------------------------------------------------- - * Project: CMSIS DSP Library - * Title: arm_rfft_q31.c - * Description: FFT & RIFFT Q31 process function - * - * $Date: 27. January 2017 - * $Revision: V.1.5.1 - * - * Target Processor: Cortex-M cores - * -------------------------------------------------------------------- */ -/* - * Copyright (C) 2010-2017 ARM Limited or its affiliates. All rights reserved. - * - * SPDX-License-Identifier: Apache-2.0 - * - * Licensed under the Apache License, Version 2.0 (the License); you may - * not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an AS IS BASIS, WITHOUT - * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "arm_math.h" - -/* ---------------------------------------------------------------------- - * Internal functions prototypes - * -------------------------------------------------------------------- */ - -void arm_split_rfft_q31( - q31_t * pSrc, - uint32_t fftLen, - q31_t * pATable, - q31_t * pBTable, - q31_t * pDst, - uint32_t modifier); - -void arm_split_rifft_q31( - q31_t * pSrc, - uint32_t fftLen, - q31_t * pATable, - q31_t * pBTable, - q31_t * pDst, - uint32_t modifier); - -/** -* @addtogroup RealFFT -* @{ -*/ - -/** -* @brief Processing function for the Q31 RFFT/RIFFT. -* @param[in] *S points to an instance of the Q31 RFFT/RIFFT structure. -* @param[in] *pSrc points to the input buffer. -* @param[out] *pDst points to the output buffer. -* @return none. -* -* \par Input an output formats: -* \par -* Internally input is downscaled by 2 for every stage to avoid saturations inside CFFT/CIFFT process. -* Hence the output format is different for different RFFT sizes. -* The input and output formats for different RFFT sizes and number of bits to upscale are mentioned in the tables below for RFFT and RIFFT: -* \par -* \image html RFFTQ31.gif "Input and Output Formats for Q31 RFFT" -* -* \par -* \image html RIFFTQ31.gif "Input and Output Formats for Q31 RIFFT" -*/ -void arm_rfft_q31( - const arm_rfft_instance_q31 * S, - q31_t * pSrc, - q31_t * pDst) -{ - const arm_cfft_instance_q31 *S_CFFT = S->pCfft; - uint32_t i; - uint32_t L2 = S->fftLenReal >> 1; - - /* Calculation of RIFFT of input */ - if (S->ifftFlagR == 1U) - { - /* Real IFFT core process */ - arm_split_rifft_q31(pSrc, L2, S->pTwiddleAReal, - S->pTwiddleBReal, pDst, S->twidCoefRModifier); - - /* Complex IFFT process */ - arm_cfft_q31(S_CFFT, pDst, S->ifftFlagR, S->bitReverseFlagR); - - for(i=0;ifftLenReal;i++) - { - pDst[i] = pDst[i] << 1; - } - } - else - { - /* Calculation of RFFT of input */ - - /* Complex FFT process */ - arm_cfft_q31(S_CFFT, pSrc, S->ifftFlagR, S->bitReverseFlagR); - - /* Real FFT core process */ - arm_split_rfft_q31(pSrc, L2, S->pTwiddleAReal, - S->pTwiddleBReal, pDst, S->twidCoefRModifier); - } -} - -/** -* @} end of RealFFT group -*/ - -/** -* @brief Core Real FFT process -* @param[in] *pSrc points to the input buffer. -* @param[in] fftLen length of FFT. -* @param[in] *pATable points to the twiddle Coef A buffer. -* @param[in] *pBTable points to the twiddle Coef B buffer. -* @param[out] *pDst points to the output buffer. -* @param[in] modifier twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. -* @return none. -*/ -void arm_split_rfft_q31( - q31_t * pSrc, - uint32_t fftLen, - q31_t * pATable, - q31_t * pBTable, - q31_t * pDst, - uint32_t modifier) -{ - uint32_t i; /* Loop Counter */ - q31_t outR, outI; /* Temporary variables for output */ - q31_t *pCoefA, *pCoefB; /* Temporary pointers for twiddle factors */ - q31_t CoefA1, CoefA2, CoefB1; /* Temporary variables for twiddle coefficients */ - q31_t *pOut1 = &pDst[2], *pOut2 = &pDst[(4U * fftLen) - 1U]; - q31_t *pIn1 = &pSrc[2], *pIn2 = &pSrc[(2U * fftLen) - 1U]; - - /* Init coefficient pointers */ - pCoefA = &pATable[modifier * 2U]; - pCoefB = &pBTable[modifier * 2U]; - - i = fftLen - 1U; - - while (i > 0U) - { - /* - outR = (pSrc[2 * i] * pATable[2 * i] - pSrc[2 * i + 1] * pATable[2 * i + 1] - + pSrc[2 * n - 2 * i] * pBTable[2 * i] + - pSrc[2 * n - 2 * i + 1] * pBTable[2 * i + 1]); - */ - - /* outI = (pIn[2 * i + 1] * pATable[2 * i] + pIn[2 * i] * pATable[2 * i + 1] + - pIn[2 * n - 2 * i] * pBTable[2 * i + 1] - - pIn[2 * n - 2 * i + 1] * pBTable[2 * i]); */ - - CoefA1 = *pCoefA++; - CoefA2 = *pCoefA; - - /* outR = (pSrc[2 * i] * pATable[2 * i] */ - mult_32x32_keep32_R(outR, *pIn1, CoefA1); - - /* outI = pIn[2 * i] * pATable[2 * i + 1] */ - mult_32x32_keep32_R(outI, *pIn1++, CoefA2); - - /* - pSrc[2 * i + 1] * pATable[2 * i + 1] */ - multSub_32x32_keep32_R(outR, *pIn1, CoefA2); - - /* (pIn[2 * i + 1] * pATable[2 * i] */ - multAcc_32x32_keep32_R(outI, *pIn1++, CoefA1); - - /* pSrc[2 * n - 2 * i] * pBTable[2 * i] */ - multSub_32x32_keep32_R(outR, *pIn2, CoefA2); - CoefB1 = *pCoefB; - - /* pIn[2 * n - 2 * i] * pBTable[2 * i + 1] */ - multSub_32x32_keep32_R(outI, *pIn2--, CoefB1); - - /* pSrc[2 * n - 2 * i + 1] * pBTable[2 * i + 1] */ - multAcc_32x32_keep32_R(outR, *pIn2, CoefB1); - - /* pIn[2 * n - 2 * i + 1] * pBTable[2 * i] */ - multSub_32x32_keep32_R(outI, *pIn2--, CoefA2); - - /* write output */ - *pOut1++ = outR; - *pOut1++ = outI; - - /* write complex conjugate output */ - *pOut2-- = -outI; - *pOut2-- = outR; - - /* update coefficient pointer */ - pCoefB = pCoefB + (modifier * 2U); - pCoefA = pCoefA + ((modifier * 2U) - 1U); - - i--; - } - pDst[2U * fftLen] = (pSrc[0] - pSrc[1]) >> 1; - pDst[(2U * fftLen) + 1U] = 0; - - pDst[0] = (pSrc[0] + pSrc[1]) >> 1; - pDst[1] = 0; -} - -/** -* @brief Core Real IFFT process -* @param[in] *pSrc points to the input buffer. -* @param[in] fftLen length of FFT. -* @param[in] *pATable points to the twiddle Coef A buffer. -* @param[in] *pBTable points to the twiddle Coef B buffer. -* @param[out] *pDst points to the output buffer. -* @param[in] modifier twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. -* @return none. -*/ -void arm_split_rifft_q31( - q31_t * pSrc, - uint32_t fftLen, - q31_t * pATable, - q31_t * pBTable, - q31_t * pDst, - uint32_t modifier) -{ - q31_t outR, outI; /* Temporary variables for output */ - q31_t *pCoefA, *pCoefB; /* Temporary pointers for twiddle factors */ - q31_t CoefA1, CoefA2, CoefB1; /* Temporary variables for twiddle coefficients */ - q31_t *pIn1 = &pSrc[0], *pIn2 = &pSrc[(2U * fftLen) + 1U]; - - pCoefA = &pATable[0]; - pCoefB = &pBTable[0]; - - while (fftLen > 0U) - { - /* - outR = (pIn[2 * i] * pATable[2 * i] + pIn[2 * i + 1] * pATable[2 * i + 1] + - pIn[2 * n - 2 * i] * pBTable[2 * i] - - pIn[2 * n - 2 * i + 1] * pBTable[2 * i + 1]); - - outI = (pIn[2 * i + 1] * pATable[2 * i] - pIn[2 * i] * pATable[2 * i + 1] - - pIn[2 * n - 2 * i] * pBTable[2 * i + 1] - - pIn[2 * n - 2 * i + 1] * pBTable[2 * i]); - */ - CoefA1 = *pCoefA++; - CoefA2 = *pCoefA; - - /* outR = (pIn[2 * i] * pATable[2 * i] */ - mult_32x32_keep32_R(outR, *pIn1, CoefA1); - - /* - pIn[2 * i] * pATable[2 * i + 1] */ - mult_32x32_keep32_R(outI, *pIn1++, -CoefA2); - - /* pIn[2 * i + 1] * pATable[2 * i + 1] */ - multAcc_32x32_keep32_R(outR, *pIn1, CoefA2); - - /* pIn[2 * i + 1] * pATable[2 * i] */ - multAcc_32x32_keep32_R(outI, *pIn1++, CoefA1); - - /* pIn[2 * n - 2 * i] * pBTable[2 * i] */ - multAcc_32x32_keep32_R(outR, *pIn2, CoefA2); - CoefB1 = *pCoefB; - - /* pIn[2 * n - 2 * i] * pBTable[2 * i + 1] */ - multSub_32x32_keep32_R(outI, *pIn2--, CoefB1); - - /* pIn[2 * n - 2 * i + 1] * pBTable[2 * i + 1] */ - multAcc_32x32_keep32_R(outR, *pIn2, CoefB1); - - /* pIn[2 * n - 2 * i + 1] * pBTable[2 * i] */ - multAcc_32x32_keep32_R(outI, *pIn2--, CoefA2); - - /* write output */ - *pDst++ = outR; - *pDst++ = outI; - - /* update coefficient pointer */ - pCoefB = pCoefB + (modifier * 2U); - pCoefA = pCoefA + ((modifier * 2U) - 1U); - - /* Decrement loop count */ - fftLen--; - } -} -- cgit