diff options
Diffstat (limited to 'fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/lms.c')
| -rw-r--r-- | fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/lms.c | 695 |
1 files changed, 0 insertions, 695 deletions
diff --git a/fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/lms.c b/fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/lms.c deleted file mode 100644 index fee99f9..0000000 --- a/fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/FilteringFunctions/lms.c +++ /dev/null @@ -1,695 +0,0 @@ -#include "ref.h"
-
-void ref_lms_f32(
- const arm_lms_instance_f32 * S,
- float32_t * pSrc,
- float32_t * pRef,
- float32_t * pOut,
- float32_t * pErr,
- 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 mu = S->mu; /* Adaptive factor */
- uint32_t numTaps = S->numTaps; /* Number of filter coefficients in the filter */
- uint32_t i, blkCnt; /* Loop counters */
- float32_t sum, e, d; /* accumulator, error, reference data sample */
- float32_t w = 0.0f; /* weight factor */
-
- e = 0.0f;
- d = 0.0f;
-
- /* S->pState points to state array which contains previous frame (numTaps - 1) samples */
- /* pStateCurnt points to the location where the new input data should be written */
- pStateCurnt = &(S->pState[numTaps - 1U]);
-
- blkCnt = blockSize;
-
- while (blkCnt > 0U)
- {
- /* Copy the new input sample into the state buffer */
- *pStateCurnt++ = *pSrc++;
-
- /* Set the accumulator to zero */
- sum = 0.0f;
-
- for(i=0;i<numTaps;i++)
- { /* Perform the multiply-accumulate */
- sum += pState[i] * pCoeffs[i];
- }
-
- /* The result is stored in the destination buffer. */
- *pOut++ = sum;
-
- /* Compute and store error */
- d = *pRef++;
- e = d - sum;
- *pErr++ = e;
-
- /* Weighting factor for the LMS version */
- w = e * mu;
-
- for(i=0;i<numTaps;i++)
- { /* Perform the multiply-accumulate */
- pCoeffs[i] += w * pState[i];
- }
-
- /* Advance state pointer by 1 for the next sample */
- pState++;
-
- /* 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. */
- for(i=0;i<numTaps-1;i++)
- {
- S->pState[i] = pState[i];
- }
-}
-
-void ref_lms_norm_f32(
- arm_lms_norm_instance_f32 * S,
- float32_t * pSrc,
- float32_t * pRef,
- float32_t * pOut,
- float32_t * pErr,
- 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 mu = S->mu; /* Adaptive factor */
- uint32_t numTaps = S->numTaps; /* Number of filter coefficients in the filter */
- uint32_t i, blkCnt; /* Loop counters */
- float32_t energy; /* Energy of the input */
- float32_t sum, e, d; /* accumulator, error, reference data sample */
- float32_t w, x0, in; /* weight factor, temporary variable to hold input sample and state */
-
- /* Initializations of error, difference, Coefficient update */
- e = 0.0f;
- d = 0.0f;
- w = 0.0f;
-
- energy = S->energy;
- x0 = S->x0;
-
- /* S->pState points to buffer which contains previous frame (numTaps - 1) samples */
- /* pStateCurnt points to the location where the new input data should be written */
- pStateCurnt = &(S->pState[numTaps - 1U]);
-
- for(blkCnt = blockSize; blkCnt > 0U; blkCnt--)
- {
- /* Copy the new input sample into the state buffer */
- *pStateCurnt++ = *pSrc;
-
- /* Read the sample from input buffer */
- in = *pSrc++;
-
- /* Update the energy calculation */
- energy -= x0 * x0;
- energy += in * in;
-
- /* Set the accumulator to zero */
- sum = 0.0f;
-
- for(i=0;i<numTaps;i++)
- { /* Perform the multiply-accumulate */
- sum += pState[i] * pCoeffs[i];
- }
-
- /* The result in the accumulator is stored in the destination buffer. */
- *pOut++ = sum;
-
- /* Compute and store error */
- d = *pRef++;
- e = d - sum;
- *pErr++ = e;
-
- /* Calculation of Weighting factor for updating filter coefficients */
- /* epsilon value 0.000000119209289f */
- w = e * mu / (energy + 0.000000119209289f);
-
- for(i=0;i<numTaps;i++)
- {
- /* Perform the multiply-accumulate */
- pCoeffs[i] += w * pState[i];
- }
-
- x0 = *pState;
-
- /* Advance state pointer by 1 for the next sample */
- pState++;
- }
-
- S->energy = energy;
- S->x0 = x0;
-
- /* 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. */
- for(i=0;i<numTaps-1;i++)
- {
- S->pState[i] = pState[i];
- }
-}
-
-void ref_lms_q31(
- const arm_lms_instance_q31 * S,
- q31_t * pSrc,
- q31_t * pRef,
- q31_t * pOut,
- q31_t * pErr,
- uint32_t blockSize)
-{
- q31_t *pState = S->pState; /* State pointer */
- uint32_t numTaps = S->numTaps; /* Number of filter coefficients in the filter */
- q31_t *pCoeffs = S->pCoeffs; /* Coefficient pointer */
- q31_t *pStateCurnt; /* Points to the current sample of the state */
- q31_t mu = S->mu; /* Adaptive factor */
- q31_t *px; /* Temporary pointer for state */
- q31_t *pb; /* Temporary pointer for coefficient buffer */
- uint32_t tapCnt, blkCnt; /* Loop counters */
- q63_t acc; /* Accumulator */
- q31_t e = 0; /* error of data sample */
- q31_t alpha; /* Intermediate constant for taps update */
- q31_t coef; /* Temporary variable for coef */
- q31_t acc_l, acc_h; /* temporary input */
- uint32_t uShift = (uint32_t)S->postShift + 1;
- uint32_t lShift = 32U - uShift; /* Shift to be applied to the output */
-
- /* S->pState points to buffer which contains previous frame (numTaps - 1) samples */
- /* pStateCurnt points to the location where the new input data should be written */
- pStateCurnt = &(S->pState[(numTaps - 1U)]);
-
- for(blkCnt = blockSize; blkCnt > 0U; blkCnt--)
- {
- /* Copy the new input sample into the state buffer */
- *pStateCurnt++ = *pSrc++;
-
- /* Initialize pState pointer */
- px = pState;
-
- /* Initialize pCoeffs pointer */
- pb = pCoeffs;
-
- /* Set the accumulator to zero */
- acc = 0;
-
- /* Loop over numTaps number of values */
- tapCnt = numTaps;
-
- while (tapCnt > 0U)
- {
- /* Perform the multiply-accumulate */
- acc += (q63_t)(*px++) * (*pb++);
-
- /* Decrement the loop counter */
- tapCnt--;
- }
-
- /* Converting the result to 1.31 format */
- /* Store the result from accumulator into the destination buffer. */
- /* Calc lower part of acc */
- acc_l = acc & 0xffffffff;
-
- /* Calc upper part of acc */
- acc_h = (acc >> 32) & 0xffffffff;
-
- acc = (uint32_t)acc_l >> lShift | acc_h << uShift;
-
- *pOut++ = (q31_t)acc;
-
- /* Compute and store error */
- e = *pRef++ - (q31_t)acc;
-
- *pErr++ = (q31_t)e;
-
- /* Weighting factor for the LMS version */
- alpha = (q31_t)(((q63_t)e * mu) >> 31);
-
- /* Initialize pState pointer */
- /* Advance state pointer by 1 for the next sample */
- px = pState++;
-
- /* Initialize pCoeffs pointer */
- pb = pCoeffs;
-
- /* Loop over numTaps number of values */
- tapCnt = numTaps;
-
- while (tapCnt > 0U)
- {
- /* Perform the multiply-accumulate */
- coef = (q31_t)(((q63_t) alpha * (*px++)) >> 32);
- *pb = ref_sat_q31((q63_t)*pb + (coef << 1));
- pb++;
-
- /* Decrement the loop counter */
- tapCnt--;
- }
- }
-
- /* 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 pState buffer */
- pStateCurnt = S->pState;
-
- /* Copy (numTaps - 1U) samples */
- tapCnt = numTaps - 1;
-
- /* Copy the data */
- while (tapCnt > 0U)
- {
- *pStateCurnt++ = *pState++;
-
- /* Decrement the loop counter */
- tapCnt--;
- }
-}
-
-void ref_lms_norm_q31(
- arm_lms_norm_instance_q31 * S,
- q31_t * pSrc,
- q31_t * pRef,
- q31_t * pOut,
- q31_t * pErr,
- 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 *px, *pb; /* Temporary pointers for state and coefficient buffers */
- q31_t mu = S->mu; /* Adaptive factor */
- uint32_t numTaps = S->numTaps; /* Number of filter coefficients in the filter */
- uint32_t tapCnt, blkCnt; /* Loop counters */
- q63_t energy; /* Energy of the input */
- q63_t acc; /* Accumulator */
- q31_t e = 0, d = 0; /* error, reference data sample */
- q31_t w = 0, in; /* weight factor and state */
- q31_t x0; /* temporary variable to hold input sample */
- q63_t errorXmu; /* Temporary variables to store error and mu product and reciprocal of energy */
- q31_t coef; /* Temporary variable for coef */
- q31_t acc_l, acc_h; /* temporary input */
- uint32_t uShift = ((uint32_t) S->postShift + 1U);
- uint32_t lShift = 32U - uShift; /* Shift to be applied to the output */
-
- energy = S->energy;
- x0 = S->x0;
-
- /* S->pState points to buffer which contains previous frame (numTaps - 1) samples */
- /* pStateCurnt points to the location where the new input data should be written */
- pStateCurnt = &(S->pState[(numTaps - 1U)]);
-
- for(blkCnt = blockSize; blkCnt > 0U; blkCnt--)
- {
-
- /* Copy the new input sample into the state buffer */
- *pStateCurnt++ = *pSrc;
-
- /* Initialize pState pointer */
- px = pState;
-
- /* Initialize pCoeffs pointer */
- pb = pCoeffs;
-
- /* Read the sample from input buffer */
- in = *pSrc++;
-
- /* Update the energy calculation */
- energy = (q31_t)((((q63_t)energy << 32) - (((q63_t)x0 * x0) << 1)) >> 32) & 0xffffffff;
- energy = (q31_t)(((((q63_t)in * in) << 1) + ((q63_t)energy << 32)) >> 32) & 0xffffffff;
-
- /* Set the accumulator to zero */
- acc = 0;
-
- /* Loop over numTaps number of values */
- tapCnt = numTaps;
-
- while (tapCnt > 0U)
- {
- /* Perform the multiply-accumulate */
- acc += ((q63_t) (*px++)) * (*pb++);
-
- /* Decrement the loop counter */
- tapCnt--;
- }
-
- /* Converting the result to 1.31 format */
- /* Calc lower part of acc */
- acc_l = acc & 0xffffffff;
-
- /* Calc upper part of acc */
- acc_h = (acc >> 32) & 0xffffffff;
-
- acc = (uint32_t)acc_l >> lShift | acc_h << uShift;
-
- /* Store the result from accumulator into the destination buffer. */
- *pOut++ = (q31_t)acc;
-
- /* Compute and store error */
- d = *pRef++;
- e = d - (q31_t)acc;
- *pErr++ = e;
-
- /* Calculation of product of (e * mu) */
- errorXmu = (q63_t)e * mu;
-
- /* Weighting factor for the normalized version */
- w = ref_sat_q31(errorXmu / (energy + DELTA_Q31));
-
- /* Initialize pState pointer */
- px = pState;
-
- /* Initialize coeff pointer */
- pb = pCoeffs;
-
- /* Loop over numTaps number of values */
- tapCnt = numTaps;
-
- while (tapCnt > 0U)
- {
- /* Perform the multiply-accumulate */
- /* coef is in 2.30 format */
- coef = (q31_t)(((q63_t)w * (*px++)) >> 32);
- /* get coef in 1.31 format by left shifting */
- *pb = ref_sat_q31((q63_t)*pb + (coef << 1U));
- /* update coefficient buffer to next coefficient */
- pb++;
-
- /* Decrement the loop counter */
- tapCnt--;
- }
-
- /* Read the sample from state buffer */
- x0 = *pState;
-
- /* Advance state pointer by 1 for the next sample */
- pState++;
- }
-
- /* Save energy and x0 values for the next frame */
- S->energy = (q31_t)energy;
- S->x0 = x0;
-
- /* 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 pState buffer */
- pStateCurnt = S->pState;
-
- /* Loop for (numTaps - 1U) samples copy */
- tapCnt = numTaps - 1;
-
- /* Copy the remaining q31_t data */
- while (tapCnt > 0U)
- {
- *pStateCurnt++ = *pState++;
-
- /* Decrement the loop counter */
- tapCnt--;
- }
-}
-
-void ref_lms_q15(
- const arm_lms_instance_q15 * S,
- q15_t * pSrc,
- q15_t * pRef,
- q15_t * pOut,
- q15_t * pErr,
- uint32_t blockSize)
-{
- q15_t *pState = S->pState; /* State pointer */
- uint32_t numTaps = S->numTaps; /* Number of filter coefficients in the filter */
- q15_t *pCoeffs = S->pCoeffs; /* Coefficient pointer */
- q15_t *pStateCurnt; /* Points to the current sample of the state */
- q15_t mu = S->mu; /* Adaptive factor */
- q15_t *px; /* Temporary pointer for state */
- q15_t *pb; /* Temporary pointer for coefficient buffer */
- uint32_t tapCnt, blkCnt; /* Loop counters */
- q63_t acc; /* Accumulator */
- q15_t e = 0; /* error of data sample */
- q15_t alpha; /* Intermediate constant for taps update */
- q31_t coef; /* Teporary variable for coefficient */
- q31_t acc_l, acc_h;
- int32_t lShift = 15 - (int32_t)S->postShift; /* Post shift */
- int32_t uShift = 32 - lShift;
-
- /* S->pState points to buffer which contains previous frame (numTaps - 1) samples */
- /* pStateCurnt points to the location where the new input data should be written */
- pStateCurnt = &(S->pState[(numTaps - 1U)]);
-
- for(blkCnt = blockSize; blkCnt > 0U; blkCnt--)
- {
- /* Copy the new input sample into the state buffer */
- *pStateCurnt++ = *pSrc++;
-
- /* Initialize pState pointer */
- px = pState;
-
- /* Initialize pCoeffs pointer */
- pb = pCoeffs;
-
- /* Set the accumulator to zero */
- acc = 0;
-
- /* Loop over numTaps number of values */
- tapCnt = numTaps;
-
- while (tapCnt > 0U)
- {
- /* Perform the multiply-accumulate */
- acc += (q63_t)((q31_t)(*px++) * (*pb++));
-
- /* Decrement the loop counter */
- tapCnt--;
- }
-
- /* Calc lower part of acc */
- acc_l = acc & 0xffffffff;
-
- /* Calc upper part of acc */
- acc_h = (acc >> 32) & 0xffffffff;
-
- /* Apply shift for lower part of acc and upper part of acc */
- acc = (uint32_t)acc_l >> lShift | acc_h << uShift;
-
- /* Converting the result to 1.15 format and saturate the output */
- acc = ref_sat_q15(acc);
-
- /* Store the result from accumulator into the destination buffer. */
- *pOut++ = (q15_t)acc;
-
- /* Compute and store error */
- e = *pRef++ - (q15_t)acc;
-
- *pErr++ = (q15_t)e;
-
- /* Compute alpha i.e. intermediate constant for taps update */
- alpha = (q15_t)(((q31_t)e * mu) >> 15);
-
- /* Initialize pState pointer */
- /* Advance state pointer by 1 for the next sample */
- px = pState++;
-
- /* Initialize pCoeffs pointer */
- pb = pCoeffs;
-
- /* Loop over numTaps number of values */
- tapCnt = numTaps;
-
- while (tapCnt > 0U)
- {
- /* Perform the multiply-accumulate */
- coef = (q31_t) * pb + (((q31_t) alpha * (*px++)) >> 15);
- *pb++ = (q15_t) ref_sat_q15(coef);
-
- /* Decrement the loop counter */
- tapCnt--;
- }
- }
-
- /* 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 pState buffer */
- pStateCurnt = S->pState;
-
- /* Copy (numTaps - 1U) samples */
- tapCnt = numTaps - 1;
-
- /* Copy the data */
- while (tapCnt > 0U)
- {
- *pStateCurnt++ = *pState++;
-
- /* Decrement the loop counter */
- tapCnt--;
- }
-}
-
-void ref_lms_norm_q15(
- arm_lms_norm_instance_q15 * S,
- q15_t * pSrc,
- q15_t * pRef,
- q15_t * pOut,
- q15_t * pErr,
- 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 *px, *pb; /* Temporary pointers for state and coefficient buffers */
- q15_t mu = S->mu; /* Adaptive factor */
- uint32_t numTaps = S->numTaps; /* Number of filter coefficients in the filter */
- uint32_t tapCnt, blkCnt; /* Loop counters */
- q31_t energy; /* Energy of the input */
- q63_t acc; /* Accumulator */
- q15_t e = 0, d = 0; /* error, reference data sample */
- q15_t w = 0, in; /* weight factor and state */
- q15_t x0; /* temporary variable to hold input sample */
- q15_t errorXmu, oneByEnergy; /* Temporary variables to store error and mu product and reciprocal of energy */
- //q31_t errorXmu; /* Temporary variables to store error and mu product and reciprocal of energy */
- q15_t postShift; /* Post shift to be applied to weight after reciprocal calculation */
- q31_t coef; /* Teporary variable for coefficient */
- q31_t acc_l, acc_h;
- int32_t lShift = 15 - (int32_t)S->postShift; /* Post shift */
- int32_t uShift = 32 - lShift;
-
- energy = S->energy;
- x0 = S->x0;
-
- /* S->pState points to buffer which contains previous frame (numTaps - 1) samples */
- /* pStateCurnt points to the location where the new input data should be written */
- pStateCurnt = &(S->pState[(numTaps - 1U)]);
-
- for(blkCnt = blockSize; blkCnt > 0U; blkCnt--)
- {
- /* Copy the new input sample into the state buffer */
- *pStateCurnt++ = *pSrc;
-
- /* Initialize pState pointer */
- px = pState;
-
- /* Initialize pCoeffs pointer */
- pb = pCoeffs;
-
- /* Read the sample from input buffer */
- in = *pSrc++;
-
- /* Update the energy calculation */
- energy -= (((q31_t)x0 * x0) >> 15) & 0xffff;
- energy += (((q31_t)in * in) >> 15) & 0xffff;
-
- /* Set the accumulator to zero */
- acc = 0;
-
- /* Loop over numTaps number of values */
- tapCnt = numTaps;
-
- while (tapCnt > 0U)
- {
- /* Perform the multiply-accumulate */
- acc += (q31_t)*px++ * (*pb++);
-
- /* Decrement the loop counter */
- tapCnt--;
- }
-
- /* Calc lower part of acc */
- acc_l = acc & 0xffffffff;
-
- /* Calc upper part of acc */
- acc_h = (acc >> 32) & 0xffffffff;
-
- /* Apply shift for lower part of acc and upper part of acc */
- acc = (uint32_t) acc_l >> lShift | acc_h << uShift;
-
- /* Converting the result to 1.15 format and saturate the output */
- acc = ref_sat_q15(acc);
-
- /* Store the result from accumulator into the destination buffer. */
- *pOut++ = (q15_t) acc;
-
- /* Compute and store error */
- d = *pRef++;
- e = d - (q15_t) acc;
- *pErr++ = e;
-
-#if 0
- /* Calculation of e * mu value */
- errorXmu = (q31_t) e * mu;
-
- /* Calculation of (e * mu) /energy value */
- acc = errorXmu / (energy + DELTA_Q15);
-#endif
-
- /* Calculation of 1/energy */
- postShift = arm_recip_q15((q15_t) energy + DELTA_Q15,
- &oneByEnergy, S->recipTable);
-
- /* Calculation of e * mu value */
- errorXmu = (q15_t) (((q31_t) e * mu) >> 15);
-
- /* Calculation of (e * mu) * (1/energy) value */
- acc = (((q31_t) errorXmu * oneByEnergy) >> (15 - postShift));
-
- /* Weighting factor for the normalized version */
- w = ref_sat_q15((q31_t)acc);
-
- /* Initialize pState pointer */
- px = pState;
-
- /* Initialize coeff pointer */
- pb = pCoeffs;
-
- /* Loop over numTaps number of values */
- tapCnt = numTaps;
-
- while (tapCnt > 0U)
- {
- /* Perform the multiply-accumulate */
- coef = *pb + (((q31_t)w * (*px++)) >> 15);
- *pb++ = ref_sat_q15(coef);
-
- /* Decrement the loop counter */
- tapCnt--;
- }
-
- /* Read the sample from state buffer */
- x0 = *pState;
-
- /* Advance state pointer by 1 for the next sample */
- pState = pState + 1U;
- }
-
- /* Save energy and x0 values for the next frame */
- S->energy = (q15_t)energy;
- S->x0 = x0;
-
- /* Processing is complete. Now copy the last numTaps - 1 samples to the
- satrt of the state buffer. This prepares the state buffer for the
- next function call. */
-
- /* Points to the start of the pState buffer */
- pStateCurnt = S->pState;
-
- /* copy (numTaps - 1U) data */
- tapCnt = numTaps - 1;
-
- /* copy data */
- while (tapCnt > 0U)
- {
- *pStateCurnt++ = *pState++;
-
- /* Decrement the loop counter */
- tapCnt--;
- }
-}
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