diff options
Diffstat (limited to 'fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir_decimate.c')
| -rw-r--r-- | fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir_decimate.c | 386 |
1 files changed, 0 insertions, 386 deletions
diff --git a/fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir_decimate.c b/fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir_decimate.c deleted file mode 100644 index 7cbf127..0000000 --- a/fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/fir_decimate.c +++ /dev/null @@ -1,386 +0,0 @@ -#include "ref.h"
-
-void ref_fir_decimate_f32(
- const arm_fir_decimate_instance_f32 * S,
- float32_t * pSrc,
- float32_t * pDst,
- uint32_t blockSize)
-{
- float32_t *pState = S->pState; /* State pointer */
- float32_t *pCoeffs = S->pCoeffs; /* Coefficient pointer */
- float32_t *pStateCurnt; /* Points to the current sample of the state */
- float32_t sum0; /* Accumulator */
- float32_t x0, c0; /* Temporary variables to hold state and coefficient values */
- uint32_t numTaps = S->numTaps; /* Number of filter coefficients in the filter */
- uint32_t i, blkCnt; /* Loop counters */
-
- /* S->pState buffer contains previous frame (numTaps - 1) samples */
- /* pStateCurnt points to the location where the new input data should be written */
- pStateCurnt = S->pState + numTaps - 1U;
-
- /* Total number of output samples to be computed */
- blkCnt = blockSize / S->M;
-
- while (blkCnt > 0U)
- {
- /* Copy decimation factor number of new input samples into the state buffer */
- i = S->M;
-
- do
- {
- *pStateCurnt++ = *pSrc++;
- } while (--i);
-
- /* Set accumulator to zero */
- sum0 = 0.0f;
-
- for(i=0;i<numTaps;i++)
- {
- /* Read coefficients */
- c0 = pCoeffs[i];
-
- /* Fetch 1 state variable */
- x0 = pState[i];
-
- /* Perform the multiply-accumulate */
- sum0 += x0 * c0;
- }
-
- /* Advance the state pointer by the decimation factor
- * to process the next group of decimation factor number samples */
- pState += S->M;
-
- /* The result is in the accumulator, store in the destination buffer. */
- *pDst++ = sum0;
-
- /* Decrement the loop counter */
- blkCnt--;
- }
- /* Processing is complete.
- ** Now copy the last numTaps - 1 samples to the start of the state buffer.
- ** This prepares the state buffer for the next function call. */
-
- /* Points to the start of the state buffer */
- pStateCurnt = S->pState;
-
- /* Copy numTaps number of values */
- i = numTaps - 1U;
-
- /* copy data */
- while (i > 0U)
- {
- *pStateCurnt++ = *pState++;
-
- /* Decrement the loop counter */
- i--;
- }
-}
-
-void ref_fir_decimate_q31(
- const arm_fir_decimate_instance_q31 * S,
- q31_t * pSrc,
- q31_t * pDst,
- uint32_t blockSize)
-{
- q31_t *pState = S->pState; /* State pointer */
- q31_t *pCoeffs = S->pCoeffs; /* Coefficient pointer */
- q31_t *pStateCurnt; /* Points to the current sample of the state */
- q31_t x0, c0; /* Temporary variables to hold state and coefficient values */
- q63_t sum0; /* Accumulator */
- uint32_t numTaps = S->numTaps; /* Number of taps */
- uint32_t i, blkCnt; /* Loop counters */
-
- /* S->pState buffer contains previous frame (numTaps - 1) samples */
- /* pStateCurnt points to the location where the new input data should be written */
- pStateCurnt = S->pState + numTaps - 1U;
-
- /* Total number of output samples to be computed */
- blkCnt = blockSize / S->M;
-
- while (blkCnt > 0U)
- {
- /* Copy decimation factor number of new input samples into the state buffer */
- i = S->M;
-
- do
- {
- *pStateCurnt++ = *pSrc++;
-
- } while (--i);
-
- /* Set accumulator to zero */
- sum0 = 0;
-
- for(i=0;i<numTaps;i++)
- {
- /* Read coefficients */
- c0 = pCoeffs[i];
-
- /* Fetch 1 state variable */
- x0 = pState[i];
-
- /* Perform the multiply-accumulate */
- sum0 += (q63_t)x0 * c0;
- }
-
- /* Advance the state pointer by the decimation factor
- * to process the next group of decimation factor number samples */
- pState = pState + S->M;
-
- /* The result is in the accumulator, store in the destination buffer. */
- *pDst++ = (q31_t) (sum0 >> 31);
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* Processing is complete.
- ** Now copy the last numTaps - 1 samples to the start of the state buffer.
- ** This prepares the state buffer for the next function call. */
-
- /* Points to the start of the state buffer */
- pStateCurnt = S->pState;
-
- i = numTaps - 1U;
-
- /* copy data */
- while (i > 0U)
- {
- *pStateCurnt++ = *pState++;
-
- /* Decrement the loop counter */
- i--;
- }
-}
-
-void ref_fir_decimate_fast_q31(
- const arm_fir_decimate_instance_q31 * S,
- q31_t * pSrc,
- q31_t * pDst,
- uint32_t blockSize)
-{
- q31_t *pState = S->pState; /* State pointer */
- q31_t *pCoeffs = S->pCoeffs; /* Coefficient pointer */
- q31_t *pStateCurnt; /* Points to the current sample of the state */
- q31_t x0, c0; /* Temporary variables to hold state and coefficient values */
- q31_t sum0; /* Accumulator */
- uint32_t numTaps = S->numTaps; /* Number of taps */
- uint32_t i, blkCnt; /* Loop counters */
-
- /* S->pState buffer contains previous frame (numTaps - 1) samples */
- /* pStateCurnt points to the location where the new input data should be written */
- pStateCurnt = S->pState + numTaps - 1U;
-
- /* Total number of output samples to be computed */
- blkCnt = blockSize / S->M;
-
- while (blkCnt > 0U)
- {
- /* Copy decimation factor number of new input samples into the state buffer */
- i = S->M;
-
- do
- {
- *pStateCurnt++ = *pSrc++;
-
- } while (--i);
-
- /* Set accumulator to zero */
- sum0 = 0;
-
- for(i=0;i<numTaps;i++)
- {
- /* Read coefficients */
- c0 = pCoeffs[i];
-
- /* Fetch 1 state variable */
- x0 = pState[i];
-
- /* Perform the multiply-accumulate */
- sum0 = (q31_t)((((q63_t) sum0 << 32) + ((q63_t) x0 * c0)) >> 32);
- }
-
- /* Advance the state pointer by the decimation factor
- * to process the next group of decimation factor number samples */
- pState = pState + S->M;
-
- /* The result is in the accumulator, store in the destination buffer. */
- *pDst++ = (q31_t) (sum0 << 1);
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* Processing is complete.
- ** Now copy the last numTaps - 1 samples to the start of the state buffer.
- ** This prepares the state buffer for the next function call. */
-
- /* Points to the start of the state buffer */
- pStateCurnt = S->pState;
-
- i = numTaps - 1U;
-
- /* copy data */
- while (i > 0U)
- {
- *pStateCurnt++ = *pState++;
-
- /* Decrement the loop counter */
- i--;
- }
-}
-
-void ref_fir_decimate_q15(
- const arm_fir_decimate_instance_q15 * S,
- q15_t * pSrc,
- q15_t * pDst,
- uint32_t blockSize)
-{
- q15_t *pState = S->pState; /* State pointer */
- q15_t *pCoeffs = S->pCoeffs; /* Coefficient pointer */
- q15_t *pStateCurnt; /* Points to the current sample of the state */
- q31_t x0, c0; /* Temporary variables to hold state and coefficient values */
- q63_t sum0; /* Accumulator */
- uint32_t numTaps = S->numTaps; /* Number of taps */
- uint32_t i, blkCnt; /* Loop counters */
-
- /* S->pState buffer contains previous frame (numTaps - 1) samples */
- /* pStateCurnt points to the location where the new input data should be written */
- pStateCurnt = S->pState + numTaps - 1U;
-
- /* Total number of output samples to be computed */
- blkCnt = blockSize / S->M;
-
- while (blkCnt > 0U)
- {
- /* Copy decimation factor number of new input samples into the state buffer */
- i = S->M;
-
- do
- {
- *pStateCurnt++ = *pSrc++;
-
- } while (--i);
-
- /* Set accumulator to zero */
- sum0 = 0;
-
- for(i=0;i<numTaps;i++)
- {
- /* Read coefficients */
- c0 = pCoeffs[i];
-
- /* Fetch 1 state variable */
- x0 = pState[i];
-
- /* Perform the multiply-accumulate */
- sum0 += (q31_t)x0 * c0;
- }
-
- /* Advance the state pointer by the decimation factor
- * to process the next group of decimation factor number samples */
- pState = pState + S->M;
-
- /* The result is in the accumulator, store in the destination buffer. */
- *pDst++ = ref_sat_q15(sum0 >> 15);
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* Processing is complete.
- ** Now copy the last numTaps - 1 samples to the start of the state buffer.
- ** This prepares the state buffer for the next function call. */
-
- /* Points to the start of the state buffer */
- pStateCurnt = S->pState;
-
- i = numTaps - 1U;
-
- /* copy data */
- while (i > 0U)
- {
- *pStateCurnt++ = *pState++;
-
- /* Decrement the loop counter */
- i--;
- }
-}
-
-void ref_fir_decimate_fast_q15(
- const arm_fir_decimate_instance_q15 * S,
- q15_t * pSrc,
- q15_t * pDst,
- uint32_t blockSize)
-{
- q15_t *pState = S->pState; /* State pointer */
- q15_t *pCoeffs = S->pCoeffs; /* Coefficient pointer */
- q15_t *pStateCurnt; /* Points to the current sample of the state */
- q15_t x0, c0; /* Temporary variables to hold state and coefficient values */
- q31_t sum0; /* Accumulator */
- uint32_t numTaps = S->numTaps; /* Number of taps */
- uint32_t i, blkCnt; /* Loop counters */
-
- /* S->pState buffer contains previous frame (numTaps - 1) samples */
- /* pStateCurnt points to the location where the new input data should be written */
- pStateCurnt = S->pState + numTaps - 1U;
-
- /* Total number of output samples to be computed */
- blkCnt = blockSize / S->M;
-
- while (blkCnt > 0U)
- {
- /* Copy decimation factor number of new input samples into the state buffer */
- i = S->M;
-
- do
- {
- *pStateCurnt++ = *pSrc++;
-
- } while (--i);
-
- /* Set accumulator to zero */
- sum0 = 0;
-
- for(i=0;i<numTaps;i++)
- {
- /* Read coefficients */
- c0 = pCoeffs[i];
-
- /* Fetch 1 state variable */
- x0 = pState[i];
-
- /* Perform the multiply-accumulate */
- sum0 += x0 * c0;
- }
-
- /* Advance the state pointer by the decimation factor
- * to process the next group of decimation factor number samples */
- pState = pState + S->M;
-
- /* The result is in the accumulator, store in the destination buffer. */
- *pDst++ = ref_sat_q15(sum0 >> 15);
-
- /* Decrement the loop counter */
- blkCnt--;
- }
-
- /* Processing is complete.
- ** Now copy the last numTaps - 1 samples to the start of the state buffer.
- ** This prepares the state buffer for the next function call. */
-
- /* Points to the start of the state buffer */
- pStateCurnt = S->pState;
-
- i = numTaps - 1U;
-
- /* copy data */
- while (i > 0U)
- {
- *pStateCurnt++ = *pState++;
-
- /* Decrement the loop counter */
- i--;
- }
-}
-
|