From 2628932a40d769d8d0180ba6fed1e7b9b2718982 Mon Sep 17 00:00:00 2001 From: jaseg Date: Sun, 3 May 2020 19:53:02 +0200 Subject: minkbd: repo restructure --- .../DSP/Source/TransformFunctions/arm_cfft_q15.c | 345 --------------------- 1 file changed, 345 deletions(-) delete mode 100644 Blink/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_q15.c (limited to 'Blink/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_q15.c') diff --git a/Blink/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_q15.c b/Blink/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_q15.c deleted file mode 100644 index 0f5096e..0000000 --- a/Blink/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_q15.c +++ /dev/null @@ -1,345 +0,0 @@ -/* ---------------------------------------------------------------------- - * Project: CMSIS DSP Library - * Title: arm_cfft_q15.c - * Description: Combined Radix Decimation in Q15 Frequency CFFT processing 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" - -extern void arm_radix4_butterfly_q15( - q15_t * pSrc, - uint32_t fftLen, - q15_t * pCoef, - uint32_t twidCoefModifier); - -extern void arm_radix4_butterfly_inverse_q15( - q15_t * pSrc, - uint32_t fftLen, - q15_t * pCoef, - uint32_t twidCoefModifier); - -extern void arm_bitreversal_16( - uint16_t * pSrc, - const uint16_t bitRevLen, - const uint16_t * pBitRevTable); - -void arm_cfft_radix4by2_q15( - q15_t * pSrc, - uint32_t fftLen, - const q15_t * pCoef); - -void arm_cfft_radix4by2_inverse_q15( - q15_t * pSrc, - uint32_t fftLen, - const q15_t * pCoef); - -/** -* @ingroup groupTransforms -*/ - -/** -* @addtogroup ComplexFFT -* @{ -*/ - -/** -* @details -* @brief Processing function for the Q15 complex FFT. -* @param[in] *S points to an instance of the Q15 CFFT structure. -* @param[in, out] *p1 points to the complex data buffer of size 2*fftLen. Processing occurs in-place. -* @param[in] ifftFlag flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. -* @param[in] bitReverseFlag flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. -* @return none. -*/ - -void arm_cfft_q15( - const arm_cfft_instance_q15 * S, - q15_t * p1, - uint8_t ifftFlag, - uint8_t bitReverseFlag) -{ - uint32_t L = S->fftLen; - - if (ifftFlag == 1U) - { - switch (L) - { - case 16: - case 64: - case 256: - case 1024: - case 4096: - arm_radix4_butterfly_inverse_q15 ( p1, L, (q15_t*)S->pTwiddle, 1 ); - break; - - case 32: - case 128: - case 512: - case 2048: - arm_cfft_radix4by2_inverse_q15 ( p1, L, S->pTwiddle ); - break; - } - } - else - { - switch (L) - { - case 16: - case 64: - case 256: - case 1024: - case 4096: - arm_radix4_butterfly_q15 ( p1, L, (q15_t*)S->pTwiddle, 1 ); - break; - - case 32: - case 128: - case 512: - case 2048: - arm_cfft_radix4by2_q15 ( p1, L, S->pTwiddle ); - break; - } - } - - if ( bitReverseFlag ) - arm_bitreversal_16((uint16_t*)p1,S->bitRevLength,S->pBitRevTable); -} - -/** -* @} end of ComplexFFT group -*/ - -void arm_cfft_radix4by2_q15( - q15_t * pSrc, - uint32_t fftLen, - const q15_t * pCoef) -{ - uint32_t i; - uint32_t n2; - q15_t p0, p1, p2, p3; -#if defined (ARM_MATH_DSP) - q31_t T, S, R; - q31_t coeff, out1, out2; - const q15_t *pC = pCoef; - q15_t *pSi = pSrc; - q15_t *pSl = pSrc + fftLen; -#else - uint32_t ia, l; - q15_t xt, yt, cosVal, sinVal; -#endif - - n2 = fftLen >> 1; - -#if defined (ARM_MATH_DSP) - - for (i = n2; i > 0; i--) - { - coeff = _SIMD32_OFFSET(pC); - pC += 2; - - T = _SIMD32_OFFSET(pSi); - T = __SHADD16(T, 0); // this is just a SIMD arithmetic shift right by 1 - - S = _SIMD32_OFFSET(pSl); - S = __SHADD16(S, 0); // this is just a SIMD arithmetic shift right by 1 - - R = __QSUB16(T, S); - - _SIMD32_OFFSET(pSi) = __SHADD16(T, S); - pSi += 2; - - #ifndef ARM_MATH_BIG_ENDIAN - - out1 = __SMUAD(coeff, R) >> 16; - out2 = __SMUSDX(coeff, R); - - #else - - out1 = __SMUSDX(R, coeff) >> 16U; - out2 = __SMUAD(coeff, R); - - #endif // #ifndef ARM_MATH_BIG_ENDIAN - - _SIMD32_OFFSET(pSl) = - (q31_t) ((out2) & 0xFFFF0000) | (out1 & 0x0000FFFF); - pSl += 2; - } - -#else // #if defined (ARM_MATH_DSP) - - ia = 0; - for (i = 0; i < n2; i++) - { - cosVal = pCoef[ia * 2]; - sinVal = pCoef[(ia * 2) + 1]; - ia++; - - l = i + n2; - - xt = (pSrc[2 * i] >> 1U) - (pSrc[2 * l] >> 1U); - pSrc[2 * i] = ((pSrc[2 * i] >> 1U) + (pSrc[2 * l] >> 1U)) >> 1U; - - yt = (pSrc[2 * i + 1] >> 1U) - (pSrc[2 * l + 1] >> 1U); - pSrc[2 * i + 1] = - ((pSrc[2 * l + 1] >> 1U) + (pSrc[2 * i + 1] >> 1U)) >> 1U; - - pSrc[2U * l] = (((int16_t) (((q31_t) xt * cosVal) >> 16)) + - ((int16_t) (((q31_t) yt * sinVal) >> 16))); - - pSrc[2U * l + 1U] = (((int16_t) (((q31_t) yt * cosVal) >> 16)) - - ((int16_t) (((q31_t) xt * sinVal) >> 16))); - } - -#endif // #if defined (ARM_MATH_DSP) - - // first col - arm_radix4_butterfly_q15( pSrc, n2, (q15_t*)pCoef, 2U); - // second col - arm_radix4_butterfly_q15( pSrc + fftLen, n2, (q15_t*)pCoef, 2U); - - for (i = 0; i < fftLen >> 1; i++) - { - p0 = pSrc[4*i+0]; - p1 = pSrc[4*i+1]; - p2 = pSrc[4*i+2]; - p3 = pSrc[4*i+3]; - - p0 <<= 1; - p1 <<= 1; - p2 <<= 1; - p3 <<= 1; - - pSrc[4*i+0] = p0; - pSrc[4*i+1] = p1; - pSrc[4*i+2] = p2; - pSrc[4*i+3] = p3; - } -} - -void arm_cfft_radix4by2_inverse_q15( - q15_t * pSrc, - uint32_t fftLen, - const q15_t * pCoef) -{ - uint32_t i; - uint32_t n2; - q15_t p0, p1, p2, p3; -#if defined (ARM_MATH_DSP) - q31_t T, S, R; - q31_t coeff, out1, out2; - const q15_t *pC = pCoef; - q15_t *pSi = pSrc; - q15_t *pSl = pSrc + fftLen; -#else - uint32_t ia, l; - q15_t xt, yt, cosVal, sinVal; -#endif - - n2 = fftLen >> 1; - -#if defined (ARM_MATH_DSP) - - for (i = n2; i > 0; i--) - { - coeff = _SIMD32_OFFSET(pC); - pC += 2; - - T = _SIMD32_OFFSET(pSi); - T = __SHADD16(T, 0); // this is just a SIMD arithmetic shift right by 1 - - S = _SIMD32_OFFSET(pSl); - S = __SHADD16(S, 0); // this is just a SIMD arithmetic shift right by 1 - - R = __QSUB16(T, S); - - _SIMD32_OFFSET(pSi) = __SHADD16(T, S); - pSi += 2; - - #ifndef ARM_MATH_BIG_ENDIAN - - out1 = __SMUSD(coeff, R) >> 16; - out2 = __SMUADX(coeff, R); - #else - - out1 = __SMUADX(R, coeff) >> 16U; - out2 = __SMUSD(__QSUB(0, coeff), R); - - #endif // #ifndef ARM_MATH_BIG_ENDIAN - - _SIMD32_OFFSET(pSl) = - (q31_t) ((out2) & 0xFFFF0000) | (out1 & 0x0000FFFF); - pSl += 2; - } - -#else // #if defined (ARM_MATH_DSP) - - ia = 0; - for (i = 0; i < n2; i++) - { - cosVal = pCoef[ia * 2]; - sinVal = pCoef[(ia * 2) + 1]; - ia++; - - l = i + n2; - xt = (pSrc[2 * i] >> 1U) - (pSrc[2 * l] >> 1U); - pSrc[2 * i] = ((pSrc[2 * i] >> 1U) + (pSrc[2 * l] >> 1U)) >> 1U; - - yt = (pSrc[2 * i + 1] >> 1U) - (pSrc[2 * l + 1] >> 1U); - pSrc[2 * i + 1] = - ((pSrc[2 * l + 1] >> 1U) + (pSrc[2 * i + 1] >> 1U)) >> 1U; - - pSrc[2U * l] = (((int16_t) (((q31_t) xt * cosVal) >> 16)) - - ((int16_t) (((q31_t) yt * sinVal) >> 16))); - - pSrc[2U * l + 1U] = (((int16_t) (((q31_t) yt * cosVal) >> 16)) + - ((int16_t) (((q31_t) xt * sinVal) >> 16))); - } - -#endif // #if defined (ARM_MATH_DSP) - - // first col - arm_radix4_butterfly_inverse_q15( pSrc, n2, (q15_t*)pCoef, 2U); - // second col - arm_radix4_butterfly_inverse_q15( pSrc + fftLen, n2, (q15_t*)pCoef, 2U); - - for (i = 0; i < fftLen >> 1; i++) - { - p0 = pSrc[4*i+0]; - p1 = pSrc[4*i+1]; - p2 = pSrc[4*i+2]; - p3 = pSrc[4*i+3]; - - p0 <<= 1; - p1 <<= 1; - p2 <<= 1; - p3 <<= 1; - - pSrc[4*i+0] = p0; - pSrc[4*i+1] = p1; - pSrc[4*i+2] = p2; - pSrc[4*i+3] = p3; - } -} - -- cgit