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diff --git a/src/modules/mathlib/CMSIS/DSP_Lib/Source/FilteringFunctions/arm_fir_sparse_q7.c b/src/modules/mathlib/CMSIS/DSP_Lib/Source/FilteringFunctions/arm_fir_sparse_q7.c
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-/* ----------------------------------------------------------------------
-* Copyright (C) 2010 ARM Limited. All rights reserved.
-*
-* $Date: 15. February 2012
-* $Revision: V1.1.0
-*
-* Project: CMSIS DSP Library
-* Title: arm_fir_sparse_q7.c
-*
-* Description: Q7 sparse FIR filter processing function.
-*
-* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
-*
-* Version 1.1.0 2012/02/15
-* Updated with more optimizations, bug fixes and minor API changes.
-*
-* Version 1.0.10 2011/7/15
-* Big Endian support added and Merged M0 and M3/M4 Source code.
-*
-* Version 1.0.3 2010/11/29
-* Re-organized the CMSIS folders and updated documentation.
-*
-* Version 1.0.2 2010/11/11
-* Documentation updated.
-*
-* Version 1.0.1 2010/10/05
-* Production release and review comments incorporated.
-*
-* Version 1.0.0 2010/09/20
-* Production release and review comments incorporated
-*
-* Version 0.0.7 2010/06/10
-* Misra-C changes done
-* ------------------------------------------------------------------- */
-#include "arm_math.h"
-
-
-/**
- * @ingroup groupFilters
- */
-
-/**
- * @addtogroup FIR_Sparse
- * @{
- */
-
-
-/**
- * @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.
- *
- * <b>Scaling and Overflow Behavior:</b>
- * \par
- * The function is implemented using a 32-bit internal accumulator.
- * Both coefficients and state variables are represented in 1.7 format and multiplications yield a 2.14 result.
- * The 2.14 intermediate results are accumulated in a 32-bit accumulator in 18.14 format.
- * There is no risk of internal overflow with this approach and the full precision of intermediate multiplications is preserved.
- * The accumulator is then converted to 18.7 format by discarding the low 7 bits.
- * Finally, the result is truncated to 1.7 format.
- */
-
-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)
-{
-
- q7_t *pState = S->pState; /* State pointer */
- q7_t *pCoeffs = S->pCoeffs; /* Coefficient pointer */
- q7_t *px; /* Scratch buffer pointer */
- q7_t *py = pState; /* Temporary pointers for state buffer */
- q7_t *pb = pScratchIn; /* Temporary pointers for scratch buffer */
- q7_t *pOut = pDst; /* Destination pointer */
- int32_t *pTapDelay = S->pTapDelay; /* Pointer to the array containing offset of the non-zero tap values. */
- uint32_t delaySize = S->maxDelay + blockSize; /* state length */
- uint16_t numTaps = S->numTaps; /* Filter order */
- int32_t readIndex; /* Read index of the state buffer */
- uint32_t tapCnt, blkCnt; /* loop counters */
- q7_t coeff = *pCoeffs++; /* Read the coefficient value */
- q31_t *pScr2 = pScratchOut; /* Working pointer for scratch buffer of output values */
- q31_t in;
-
-
-#ifndef ARM_MATH_CM0
-
- /* Run the below code for Cortex-M4 and Cortex-M3 */
-
- q7_t in1, in2, in3, in4;
-
- /* BlockSize of Input samples are copied into the state buffer */
- /* StateIndex points to the starting position to write in the state buffer */
- arm_circularWrite_q7(py, (int32_t) delaySize, &S->stateIndex, 1, pSrc, 1,
- blockSize);
-
- /* Loop over the number of taps. */
- tapCnt = numTaps;
-
- /* Read Index, from where the state buffer should be read, is calculated. */
- readIndex = ((int32_t) S->stateIndex - (int32_t) blockSize) - *pTapDelay++;
-
- /* Wraparound of readIndex */
- if(readIndex < 0)
- {
- readIndex += (int32_t) delaySize;
- }
-
- /* Working pointer for state buffer is updated */
- py = pState;
-
- /* blockSize samples are read from the state buffer */
- arm_circularRead_q7(py, (int32_t) delaySize, &readIndex, 1, pb, pb,
- (int32_t) blockSize, 1, blockSize);
-
- /* Working pointer for the scratch buffer of state values */
- px = pb;
-
- /* Working pointer for scratch buffer of output values */
- pScratchOut = pScr2;
-
- /* Loop over the blockSize. Unroll by a factor of 4.
- * Compute 4 multiplications at a time. */
- blkCnt = blockSize >> 2;
-
- while(blkCnt > 0u)
- {
- /* Perform multiplication and store in the scratch buffer */
- *pScratchOut++ = ((q31_t) * px++ * coeff);
- *pScratchOut++ = ((q31_t) * px++ * coeff);
- *pScratchOut++ = ((q31_t) * px++ * coeff);
- *pScratchOut++ = ((q31_t) * px++ * coeff);
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* If the blockSize is not a multiple of 4,
- * compute the remaining samples */
- blkCnt = blockSize % 0x4u;
-
- while(blkCnt > 0u)
- {
- /* Perform multiplication and store in the scratch buffer */
- *pScratchOut++ = ((q31_t) * px++ * coeff);
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* Load the coefficient value and
- * increment the coefficient buffer for the next set of state values */
- coeff = *pCoeffs++;
-
- /* Read Index, from where the state buffer should be read, is calculated. */
- readIndex = ((int32_t) S->stateIndex - (int32_t) blockSize) - *pTapDelay++;
-
- /* Wraparound of readIndex */
- if(readIndex < 0)
- {
- readIndex += (int32_t) delaySize;
- }
-
- /* Loop over the number of taps. */
- tapCnt = (uint32_t) numTaps - 1u;
-
- while(tapCnt > 0u)
- {
- /* Working pointer for state buffer is updated */
- py = pState;
-
- /* blockSize samples are read from the state buffer */
- arm_circularRead_q7(py, (int32_t) delaySize, &readIndex, 1, pb, pb,
- (int32_t) blockSize, 1, blockSize);
-
- /* Working pointer for the scratch buffer of state values */
- px = pb;
-
- /* Working pointer for scratch buffer of output values */
- pScratchOut = pScr2;
-
- /* Loop over the blockSize. Unroll by a factor of 4.
- * Compute 4 MACS at a time. */
- blkCnt = blockSize >> 2;
-
- while(blkCnt > 0u)
- {
- /* Perform Multiply-Accumulate */
- in = *pScratchOut + ((q31_t) * px++ * coeff);
- *pScratchOut++ = in;
- in = *pScratchOut + ((q31_t) * px++ * coeff);
- *pScratchOut++ = in;
- in = *pScratchOut + ((q31_t) * px++ * coeff);
- *pScratchOut++ = in;
- in = *pScratchOut + ((q31_t) * px++ * coeff);
- *pScratchOut++ = in;
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* If the blockSize is not a multiple of 4,
- * compute the remaining samples */
- blkCnt = blockSize % 0x4u;
-
- while(blkCnt > 0u)
- {
- /* Perform Multiply-Accumulate */
- in = *pScratchOut + ((q31_t) * px++ * coeff);
- *pScratchOut++ = in;
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* Load the coefficient value and
- * increment the coefficient buffer for the next set of state values */
- coeff = *pCoeffs++;
-
- /* Read Index, from where the state buffer should be read, is calculated. */
- readIndex = ((int32_t) S->stateIndex -
- (int32_t) blockSize) - *pTapDelay++;
-
- /* Wraparound of readIndex */
- if(readIndex < 0)
- {
- readIndex += (int32_t) delaySize;
- }
-
- /* Decrement the tap loop counter */
- tapCnt--;
- }
-
- /* All the output values are in pScratchOut buffer.
- Convert them into 1.15 format, saturate and store in the destination buffer. */
- /* Loop over the blockSize. */
- blkCnt = blockSize >> 2;
-
- while(blkCnt > 0u)
- {
- in1 = (q7_t) __SSAT(*pScr2++ >> 7, 8);
- in2 = (q7_t) __SSAT(*pScr2++ >> 7, 8);
- in3 = (q7_t) __SSAT(*pScr2++ >> 7, 8);
- in4 = (q7_t) __SSAT(*pScr2++ >> 7, 8);
-
- *__SIMD32(pOut)++ = __PACKq7(in1, in2, in3, in4);
-
- /* Decrement the blockSize loop counter */
- blkCnt--;
- }
-
- /* If the blockSize is not a multiple of 4,
- remaining samples are processed in the below loop */
- blkCnt = blockSize % 0x4u;
-
- while(blkCnt > 0u)
- {
- *pOut++ = (q7_t) __SSAT(*pScr2++ >> 7, 8);
-
- /* Decrement the blockSize loop counter */
- blkCnt--;
- }
-
-#else
-
- /* Run the below code for Cortex-M0 */
-
- /* BlockSize of Input samples are copied into the state buffer */
- /* StateIndex points to the starting position to write in the state buffer */
- arm_circularWrite_q7(py, (int32_t) delaySize, &S->stateIndex, 1, pSrc, 1,
- blockSize);
-
- /* Loop over the number of taps. */
- tapCnt = numTaps;
-
- /* Read Index, from where the state buffer should be read, is calculated. */
- readIndex = ((int32_t) S->stateIndex - (int32_t) blockSize) - *pTapDelay++;
-
- /* Wraparound of readIndex */
- if(readIndex < 0)
- {
- readIndex += (int32_t) delaySize;
- }
-
- /* Working pointer for state buffer is updated */
- py = pState;
-
- /* blockSize samples are read from the state buffer */
- arm_circularRead_q7(py, (int32_t) delaySize, &readIndex, 1, pb, pb,
- (int32_t) blockSize, 1, blockSize);
-
- /* Working pointer for the scratch buffer of state values */
- px = pb;
-
- /* Working pointer for scratch buffer of output values */
- pScratchOut = pScr2;
-
- /* Loop over the blockSize */
- blkCnt = blockSize;
-
- while(blkCnt > 0u)
- {
- /* Perform multiplication and store in the scratch buffer */
- *pScratchOut++ = ((q31_t) * px++ * coeff);
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* Load the coefficient value and
- * increment the coefficient buffer for the next set of state values */
- coeff = *pCoeffs++;
-
- /* Read Index, from where the state buffer should be read, is calculated. */
- readIndex = ((int32_t) S->stateIndex - (int32_t) blockSize) - *pTapDelay++;
-
- /* Wraparound of readIndex */
- if(readIndex < 0)
- {
- readIndex += (int32_t) delaySize;
- }
-
- /* Loop over the number of taps. */
- tapCnt = (uint32_t) numTaps - 1u;
-
- while(tapCnt > 0u)
- {
- /* Working pointer for state buffer is updated */
- py = pState;
-
- /* blockSize samples are read from the state buffer */
- arm_circularRead_q7(py, (int32_t) delaySize, &readIndex, 1, pb, pb,
- (int32_t) blockSize, 1, blockSize);
-
- /* Working pointer for the scratch buffer of state values */
- px = pb;
-
- /* Working pointer for scratch buffer of output values */
- pScratchOut = pScr2;
-
- /* Loop over the blockSize */
- blkCnt = blockSize;
-
- while(blkCnt > 0u)
- {
- /* Perform Multiply-Accumulate */
- in = *pScratchOut + ((q31_t) * px++ * coeff);
- *pScratchOut++ = in;
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* Load the coefficient value and
- * increment the coefficient buffer for the next set of state values */
- coeff = *pCoeffs++;
-
- /* Read Index, from where the state buffer should be read, is calculated. */
- readIndex =
- ((int32_t) S->stateIndex - (int32_t) blockSize) - *pTapDelay++;
-
- /* Wraparound of readIndex */
- if(readIndex < 0)
- {
- readIndex += (int32_t) delaySize;
- }
-
- /* Decrement the tap loop counter */
- tapCnt--;
- }
-
- /* All the output values are in pScratchOut buffer.
- Convert them into 1.15 format, saturate and store in the destination buffer. */
- /* Loop over the blockSize. */
- blkCnt = blockSize;
-
- while(blkCnt > 0u)
- {
- *pOut++ = (q7_t) __SSAT(*pScr2++ >> 7, 8);
-
- /* Decrement the blockSize loop counter */
- blkCnt--;
- }
-
-#endif /* #ifndef ARM_MATH_CM0 */
-
-}
-
-/**
- * @} end of FIR_Sparse group
- */
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