diff options
Diffstat (limited to 'fw/midi-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir_sparse.c')
| -rw-r--r-- | fw/midi-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir_sparse.c | 485 |
1 files changed, 485 insertions, 0 deletions
diff --git a/fw/midi-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir_sparse.c b/fw/midi-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir_sparse.c new file mode 100644 index 0000000..0638313 --- /dev/null +++ b/fw/midi-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir_sparse.c @@ -0,0 +1,485 @@ +#include "ref.h"
+
+void ref_fir_sparse_f32(
+ arm_fir_sparse_instance_f32 * S,
+ float32_t * pSrc,
+ float32_t * pDst,
+ float32_t * pScratchIn,
+ uint32_t blockSize)
+{
+ float32_t *pState = S->pState; /* State pointer */
+ float32_t *pCoeffs = S->pCoeffs; /* Coefficient pointer */
+ float32_t *px; /* Scratch buffer pointer */
+ float32_t *py = pState; /* Temporary pointers for state buffer */
+ float32_t *pb = pScratchIn; /* Temporary pointers for scratch buffer */
+ float32_t *pOut; /* 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; /* Number of filter coefficients in the filter */
+ int32_t readIndex; /* Read index of the state buffer */
+ uint32_t tapCnt, blkCnt; /* loop counters */
+ float32_t coeff = *pCoeffs++; /* Read the first coefficient value */
+
+
+ /* BlockSize of Input samples are copied into the state buffer */
+ /* StateIndex points to the starting position to write in the state buffer */
+ arm_circularWrite_f32((int32_t *) py, delaySize, &S->stateIndex, 1,
+ (int32_t *) pSrc, 1, blockSize);
+
+
+ /* 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_f32((int32_t *) py, delaySize, &readIndex, 1,
+ (int32_t *) pb, (int32_t *) pb, blockSize, 1,
+ blockSize);
+
+ /* Working pointer for the scratch buffer */
+ px = pb;
+
+ /* Working pointer for destination buffer */
+ pOut = pDst;
+
+ blkCnt = blockSize;
+
+ while (blkCnt > 0U)
+ {
+ /* Perform Multiplications and store in destination buffer */
+ *pOut++ = *px++ * coeff;
+
+ /* Decrement the loop counter */
+ blkCnt--;
+ }
+
+ /* Loop over the number of taps. */
+ tapCnt = (uint32_t) numTaps - 1U;
+
+ while (tapCnt > 0U)
+ {
+ /* 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;
+ }
+
+ /* Working pointer for state buffer is updated */
+ py = pState;
+
+ /* blockSize samples are read from the state buffer */
+ arm_circularRead_f32((int32_t *) py, delaySize, &readIndex, 1,
+ (int32_t *) pb, (int32_t *) pb, blockSize, 1,
+ blockSize);
+
+ /* Working pointer for the scratch buffer */
+ px = pb;
+
+ /* Working pointer for destination buffer */
+ pOut = pDst;
+
+ blkCnt = blockSize;
+
+ while (blkCnt > 0U)
+ {
+ /* Perform Multiply-Accumulate */
+ *pOut++ += *px++ * coeff;
+
+ /* Decrement the loop counter */
+ blkCnt--;
+ }
+
+ /* Decrement the tap loop counter */
+ tapCnt--;
+ }
+}
+
+void ref_fir_sparse_q31(
+ arm_fir_sparse_instance_q31 * S,
+ q31_t * pSrc,
+ q31_t * pDst,
+ q31_t * pScratchIn,
+ uint32_t blockSize)
+{
+ q31_t *pState = S->pState; /* State pointer */
+ q31_t *pCoeffs = S->pCoeffs; /* Coefficient pointer */
+ q31_t *px; /* Scratch buffer pointer */
+ q31_t *py = pState; /* Temporary pointers for state buffer */
+ q31_t *pb = pScratchIn; /* Temporary pointers for scratch buffer */
+ q31_t *pOut; /* Destination pointer */
+ q63_t out; /* Temporary output variable */
+ 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 */
+ q31_t coeff = *pCoeffs++; /* Read the first coefficient value */
+ q31_t in;
+
+
+ /* BlockSize of Input samples are copied into the state buffer */
+ /* StateIndex points to the starting position to write in the state buffer */
+ arm_circularWrite_f32((int32_t *) py, delaySize, &S->stateIndex, 1,
+ (int32_t *) pSrc, 1, blockSize);
+
+ /* Read Index, from where the state buffer should be read, is calculated. */
+ readIndex = (int32_t) (S->stateIndex - 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_f32((int32_t *) py, delaySize, &readIndex, 1,
+ (int32_t *) pb, (int32_t *) pb, blockSize, 1,
+ blockSize);
+
+ /* Working pointer for the scratch buffer of state values */
+ px = pb;
+
+ /* Working pointer for scratch buffer of output values */
+ pOut = pDst;
+
+ blkCnt = blockSize;
+
+ while (blkCnt > 0U)
+ {
+ /* Perform Multiplications and store in the destination buffer */
+ *pOut++ = (q31_t) (((q63_t) * px++ * coeff) >> 32);
+
+ /* Decrement the loop counter */
+ blkCnt--;
+ }
+
+ /* Loop over the number of taps. */
+ tapCnt = (uint32_t) numTaps - 1U;
+
+ while (tapCnt > 0U)
+ {
+ /* 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 - 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_f32((int32_t *) py, delaySize, &readIndex, 1,
+ (int32_t *) pb, (int32_t *) pb, blockSize, 1,
+ blockSize);
+
+ /* Working pointer for the scratch buffer of state values */
+ px = pb;
+
+ /* Working pointer for scratch buffer of output values */
+ pOut = pDst;
+
+ blkCnt = blockSize;
+
+ while (blkCnt > 0U)
+ {
+ /* Perform Multiply-Accumulate */
+ out = *pOut;
+ out += ((q63_t) * px++ * coeff) >> 32;
+ *pOut++ = (q31_t) (out);
+
+ /* Decrement the loop counter */
+ blkCnt--;
+ }
+
+ /* Decrement the tap loop counter */
+ tapCnt--;
+ }
+
+ /* Working output pointer is updated */
+ pOut = pDst;
+
+ /* Output is converted into 1.31 format. */
+ blkCnt = blockSize;
+
+ while (blkCnt > 0U)
+ {
+ in = *pOut << 1;
+ *pOut++ = in;
+
+ /* Decrement the loop counter */
+ blkCnt--;
+ }
+}
+
+void ref_fir_sparse_q15(
+ arm_fir_sparse_instance_q15 * S,
+ q15_t * pSrc,
+ q15_t * pDst,
+ q15_t * pScratchIn,
+ q31_t * pScratchOut,
+ uint32_t blockSize)
+{
+ q15_t *pState = S->pState; /* State pointer */
+ q15_t *pIn = pSrc; /* Working pointer for input */
+ q15_t *pOut = pDst; /* Working pointer for output */
+ q15_t *pCoeffs = S->pCoeffs; /* Coefficient pointer */
+ q15_t *px; /* Temporary pointers for scratch buffer */
+ q15_t *pb = pScratchIn; /* Temporary pointers for scratch buffer */
+ q15_t *py = pState; /* Temporary pointers for state buffer */
+ 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 */
+ q15_t coeff = *pCoeffs++; /* Read the first coefficient value */
+ q31_t *pScr2 = pScratchOut; /* Working pointer for pScratchOut */
+
+ /* BlockSize of Input samples are copied into the state buffer */
+ /* StateIndex points to the starting position to write in the state buffer */
+ arm_circularWrite_q15(py, delaySize, &S->stateIndex, 1, pIn, 1, blockSize);
+
+ /* Loop over the number of taps. */
+ tapCnt = numTaps;
+
+ /* Read Index, from where the state buffer should be read, is calculated. */
+ readIndex = (S->stateIndex - 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_q15(py, delaySize, &readIndex, 1,
+ pb, pb, blockSize, 1, blockSize);
+
+ /* Working pointer for the scratch buffer of state values */
+ px = pb;
+
+ /* Working pointer for scratch buffer of output values */
+ pScratchOut = pScr2;
+
+ blkCnt = blockSize;
+
+ while (blkCnt > 0U)
+ {
+ /* Perform multiplication and store in the scratch buffer */
+ *pScratchOut++ = ((q31_t) * px++ * coeff);
+
+ /* Decrement the loop counter */
+ blkCnt--;
+ }
+
+ /* Loop over the number of taps. */
+ tapCnt = (uint32_t) numTaps - 1U;
+
+ while (tapCnt > 0U)
+ {
+ /* 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 = (S->stateIndex - 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_q15(py, delaySize, &readIndex, 1,
+ pb, pb, blockSize, 1, blockSize);
+
+ /* Working pointer for the scratch buffer of state values */
+ px = pb;
+
+ /* Working pointer for scratch buffer of output values */
+ pScratchOut = pScr2;
+
+ blkCnt = blockSize;
+
+ while (blkCnt > 0U)
+ {
+ /* Perform Multiply-Accumulate */
+ *pScratchOut++ += (q31_t) * px++ * coeff;
+
+ /* Decrement the loop counter */
+ blkCnt--;
+ }
+
+ /* 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++ = (q15_t) __SSAT(*pScr2++ >> 15, 16);
+ blkCnt--;
+ }
+}
+
+void ref_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;
+
+ /* 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--;
+ }
+
+ /* Loop over the number of taps. */
+ tapCnt = (uint32_t) numTaps - 1U;
+
+ while (tapCnt > 0U)
+ {
+ /* 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;
+ }
+
+ /* 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--;
+ }
+
+ /* 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--;
+ }
+}
|