diff options
Diffstat (limited to 'webrtc/modules/audio_processing/aec/aec_core_sse2.c')
-rw-r--r-- | webrtc/modules/audio_processing/aec/aec_core_sse2.c | 193 |
1 files changed, 95 insertions, 98 deletions
diff --git a/webrtc/modules/audio_processing/aec/aec_core_sse2.c b/webrtc/modules/audio_processing/aec/aec_core_sse2.c index b1bffcbb9f..f897a4c0c7 100644 --- a/webrtc/modules/audio_processing/aec/aec_core_sse2.c +++ b/webrtc/modules/audio_processing/aec/aec_core_sse2.c @@ -29,67 +29,76 @@ __inline static float MulIm(float aRe, float aIm, float bRe, float bIm) { return aRe * bIm + aIm * bRe; } -static void FilterFarSSE2(AecCore* aec, float yf[2][PART_LEN1]) { +static void FilterFarSSE2( + int num_partitions, + int x_fft_buf_block_pos, + float x_fft_buf[2][kExtendedNumPartitions * PART_LEN1], + float h_fft_buf[2][kExtendedNumPartitions * PART_LEN1], + float y_fft[2][PART_LEN1]) { + int i; - const int num_partitions = aec->num_partitions; for (i = 0; i < num_partitions; i++) { int j; - int xPos = (i + aec->xfBufBlockPos) * PART_LEN1; + int xPos = (i + x_fft_buf_block_pos) * PART_LEN1; int pos = i * PART_LEN1; // Check for wrap - if (i + aec->xfBufBlockPos >= num_partitions) { + if (i + x_fft_buf_block_pos >= num_partitions) { xPos -= num_partitions * (PART_LEN1); } // vectorized code (four at once) for (j = 0; j + 3 < PART_LEN1; j += 4) { - const __m128 xfBuf_re = _mm_loadu_ps(&aec->xfBuf[0][xPos + j]); - const __m128 xfBuf_im = _mm_loadu_ps(&aec->xfBuf[1][xPos + j]); - const __m128 wfBuf_re = _mm_loadu_ps(&aec->wfBuf[0][pos + j]); - const __m128 wfBuf_im = _mm_loadu_ps(&aec->wfBuf[1][pos + j]); - const __m128 yf_re = _mm_loadu_ps(&yf[0][j]); - const __m128 yf_im = _mm_loadu_ps(&yf[1][j]); - const __m128 a = _mm_mul_ps(xfBuf_re, wfBuf_re); - const __m128 b = _mm_mul_ps(xfBuf_im, wfBuf_im); - const __m128 c = _mm_mul_ps(xfBuf_re, wfBuf_im); - const __m128 d = _mm_mul_ps(xfBuf_im, wfBuf_re); + const __m128 x_fft_buf_re = _mm_loadu_ps(&x_fft_buf[0][xPos + j]); + const __m128 x_fft_buf_im = _mm_loadu_ps(&x_fft_buf[1][xPos + j]); + const __m128 h_fft_buf_re = _mm_loadu_ps(&h_fft_buf[0][pos + j]); + const __m128 h_fft_buf_im = _mm_loadu_ps(&h_fft_buf[1][pos + j]); + const __m128 y_fft_re = _mm_loadu_ps(&y_fft[0][j]); + const __m128 y_fft_im = _mm_loadu_ps(&y_fft[1][j]); + const __m128 a = _mm_mul_ps(x_fft_buf_re, h_fft_buf_re); + const __m128 b = _mm_mul_ps(x_fft_buf_im, h_fft_buf_im); + const __m128 c = _mm_mul_ps(x_fft_buf_re, h_fft_buf_im); + const __m128 d = _mm_mul_ps(x_fft_buf_im, h_fft_buf_re); const __m128 e = _mm_sub_ps(a, b); const __m128 f = _mm_add_ps(c, d); - const __m128 g = _mm_add_ps(yf_re, e); - const __m128 h = _mm_add_ps(yf_im, f); - _mm_storeu_ps(&yf[0][j], g); - _mm_storeu_ps(&yf[1][j], h); + const __m128 g = _mm_add_ps(y_fft_re, e); + const __m128 h = _mm_add_ps(y_fft_im, f); + _mm_storeu_ps(&y_fft[0][j], g); + _mm_storeu_ps(&y_fft[1][j], h); } // scalar code for the remaining items. for (; j < PART_LEN1; j++) { - yf[0][j] += MulRe(aec->xfBuf[0][xPos + j], - aec->xfBuf[1][xPos + j], - aec->wfBuf[0][pos + j], - aec->wfBuf[1][pos + j]); - yf[1][j] += MulIm(aec->xfBuf[0][xPos + j], - aec->xfBuf[1][xPos + j], - aec->wfBuf[0][pos + j], - aec->wfBuf[1][pos + j]); + y_fft[0][j] += MulRe(x_fft_buf[0][xPos + j], + x_fft_buf[1][xPos + j], + h_fft_buf[0][pos + j], + h_fft_buf[1][pos + j]); + y_fft[1][j] += MulIm(x_fft_buf[0][xPos + j], + x_fft_buf[1][xPos + j], + h_fft_buf[0][pos + j], + h_fft_buf[1][pos + j]); } } } -static void ScaleErrorSignalSSE2(AecCore* aec, float ef[2][PART_LEN1]) { +static void ScaleErrorSignalSSE2(int extended_filter_enabled, + float normal_mu, + float normal_error_threshold, + float x_pow[PART_LEN1], + float ef[2][PART_LEN1]) { const __m128 k1e_10f = _mm_set1_ps(1e-10f); - const __m128 kMu = aec->extended_filter_enabled ? _mm_set1_ps(kExtendedMu) - : _mm_set1_ps(aec->normal_mu); - const __m128 kThresh = aec->extended_filter_enabled + const __m128 kMu = extended_filter_enabled ? _mm_set1_ps(kExtendedMu) + : _mm_set1_ps(normal_mu); + const __m128 kThresh = extended_filter_enabled ? _mm_set1_ps(kExtendedErrorThreshold) - : _mm_set1_ps(aec->normal_error_threshold); + : _mm_set1_ps(normal_error_threshold); int i; // vectorized code (four at once) for (i = 0; i + 3 < PART_LEN1; i += 4) { - const __m128 xPow = _mm_loadu_ps(&aec->xPow[i]); + const __m128 x_pow_local = _mm_loadu_ps(&x_pow[i]); const __m128 ef_re_base = _mm_loadu_ps(&ef[0][i]); const __m128 ef_im_base = _mm_loadu_ps(&ef[1][i]); - const __m128 xPowPlus = _mm_add_ps(xPow, k1e_10f); + const __m128 xPowPlus = _mm_add_ps(x_pow_local, k1e_10f); __m128 ef_re = _mm_div_ps(ef_re_base, xPowPlus); __m128 ef_im = _mm_div_ps(ef_im_base, xPowPlus); const __m128 ef_re2 = _mm_mul_ps(ef_re, ef_re); @@ -116,14 +125,14 @@ static void ScaleErrorSignalSSE2(AecCore* aec, float ef[2][PART_LEN1]) { // scalar code for the remaining items. { const float mu = - aec->extended_filter_enabled ? kExtendedMu : aec->normal_mu; - const float error_threshold = aec->extended_filter_enabled + extended_filter_enabled ? kExtendedMu : normal_mu; + const float error_threshold = extended_filter_enabled ? kExtendedErrorThreshold - : aec->normal_error_threshold; + : normal_error_threshold; for (; i < (PART_LEN1); i++) { float abs_ef; - ef[0][i] /= (aec->xPow[i] + 1e-10f); - ef[1][i] /= (aec->xPow[i] + 1e-10f); + ef[0][i] /= (x_pow[i] + 1e-10f); + ef[1][i] /= (x_pow[i] + 1e-10f); abs_ef = sqrtf(ef[0][i] * ef[0][i] + ef[1][i] * ef[1][i]); if (abs_ef > error_threshold) { @@ -139,33 +148,36 @@ static void ScaleErrorSignalSSE2(AecCore* aec, float ef[2][PART_LEN1]) { } } -static void FilterAdaptationSSE2(AecCore* aec, - float* fft, - float ef[2][PART_LEN1]) { +static void FilterAdaptationSSE2( + int num_partitions, + int x_fft_buf_block_pos, + float x_fft_buf[2][kExtendedNumPartitions * PART_LEN1], + float e_fft[2][PART_LEN1], + float h_fft_buf[2][kExtendedNumPartitions * PART_LEN1]) { + float fft[PART_LEN2]; int i, j; - const int num_partitions = aec->num_partitions; for (i = 0; i < num_partitions; i++) { - int xPos = (i + aec->xfBufBlockPos) * (PART_LEN1); + int xPos = (i + x_fft_buf_block_pos) * (PART_LEN1); int pos = i * PART_LEN1; // Check for wrap - if (i + aec->xfBufBlockPos >= num_partitions) { + if (i + x_fft_buf_block_pos >= num_partitions) { xPos -= num_partitions * PART_LEN1; } // Process the whole array... for (j = 0; j < PART_LEN; j += 4) { - // Load xfBuf and ef. - const __m128 xfBuf_re = _mm_loadu_ps(&aec->xfBuf[0][xPos + j]); - const __m128 xfBuf_im = _mm_loadu_ps(&aec->xfBuf[1][xPos + j]); - const __m128 ef_re = _mm_loadu_ps(&ef[0][j]); - const __m128 ef_im = _mm_loadu_ps(&ef[1][j]); - // Calculate the product of conjugate(xfBuf) by ef. + // Load x_fft_buf and e_fft. + const __m128 x_fft_buf_re = _mm_loadu_ps(&x_fft_buf[0][xPos + j]); + const __m128 x_fft_buf_im = _mm_loadu_ps(&x_fft_buf[1][xPos + j]); + const __m128 e_fft_re = _mm_loadu_ps(&e_fft[0][j]); + const __m128 e_fft_im = _mm_loadu_ps(&e_fft[1][j]); + // Calculate the product of conjugate(x_fft_buf) by e_fft. // re(conjugate(a) * b) = aRe * bRe + aIm * bIm // im(conjugate(a) * b)= aRe * bIm - aIm * bRe - const __m128 a = _mm_mul_ps(xfBuf_re, ef_re); - const __m128 b = _mm_mul_ps(xfBuf_im, ef_im); - const __m128 c = _mm_mul_ps(xfBuf_re, ef_im); - const __m128 d = _mm_mul_ps(xfBuf_im, ef_re); + const __m128 a = _mm_mul_ps(x_fft_buf_re, e_fft_re); + const __m128 b = _mm_mul_ps(x_fft_buf_im, e_fft_im); + const __m128 c = _mm_mul_ps(x_fft_buf_re, e_fft_im); + const __m128 d = _mm_mul_ps(x_fft_buf_im, e_fft_re); const __m128 e = _mm_add_ps(a, b); const __m128 f = _mm_sub_ps(c, d); // Interleave real and imaginary parts. @@ -176,10 +188,10 @@ static void FilterAdaptationSSE2(AecCore* aec, _mm_storeu_ps(&fft[2 * j + 4], h); } // ... and fixup the first imaginary entry. - fft[1] = MulRe(aec->xfBuf[0][xPos + PART_LEN], - -aec->xfBuf[1][xPos + PART_LEN], - ef[0][PART_LEN], - ef[1][PART_LEN]); + fft[1] = MulRe(x_fft_buf[0][xPos + PART_LEN], + -x_fft_buf[1][xPos + PART_LEN], + e_fft[0][PART_LEN], + e_fft[1][PART_LEN]); aec_rdft_inverse_128(fft); memset(fft + PART_LEN, 0, sizeof(float) * PART_LEN); @@ -197,11 +209,11 @@ static void FilterAdaptationSSE2(AecCore* aec, aec_rdft_forward_128(fft); { - float wt1 = aec->wfBuf[1][pos]; - aec->wfBuf[0][pos + PART_LEN] += fft[1]; + float wt1 = h_fft_buf[1][pos]; + h_fft_buf[0][pos + PART_LEN] += fft[1]; for (j = 0; j < PART_LEN; j += 4) { - __m128 wtBuf_re = _mm_loadu_ps(&aec->wfBuf[0][pos + j]); - __m128 wtBuf_im = _mm_loadu_ps(&aec->wfBuf[1][pos + j]); + __m128 wtBuf_re = _mm_loadu_ps(&h_fft_buf[0][pos + j]); + __m128 wtBuf_im = _mm_loadu_ps(&h_fft_buf[1][pos + j]); const __m128 fft0 = _mm_loadu_ps(&fft[2 * j + 0]); const __m128 fft4 = _mm_loadu_ps(&fft[2 * j + 4]); const __m128 fft_re = @@ -210,10 +222,10 @@ static void FilterAdaptationSSE2(AecCore* aec, _mm_shuffle_ps(fft0, fft4, _MM_SHUFFLE(3, 1, 3, 1)); wtBuf_re = _mm_add_ps(wtBuf_re, fft_re); wtBuf_im = _mm_add_ps(wtBuf_im, fft_im); - _mm_storeu_ps(&aec->wfBuf[0][pos + j], wtBuf_re); - _mm_storeu_ps(&aec->wfBuf[1][pos + j], wtBuf_im); + _mm_storeu_ps(&h_fft_buf[0][pos + j], wtBuf_re); + _mm_storeu_ps(&h_fft_buf[1][pos + j], wtBuf_im); } - aec->wfBuf[1][pos] = wt1; + h_fft_buf[1][pos] = wt1; } } } @@ -427,7 +439,8 @@ __inline static void _mm_add_ps_4x1(__m128 sum, float *dst) { sum = _mm_add_ps(sum, _mm_shuffle_ps(sum, sum, _MM_SHUFFLE(1, 1, 1, 1))); _mm_store_ss(dst, sum); } -static int PartitionDelay(const AecCore* aec) { + +static int PartitionDelaySSE2(const AecCore* aec) { // Measures the energy in each filter partition and returns the partition with // highest energy. // TODO(bjornv): Spread computational cost by computing one partition per @@ -476,7 +489,8 @@ static int PartitionDelay(const AecCore* aec) { static void SmoothedPSD(AecCore* aec, float efw[2][PART_LEN1], float dfw[2][PART_LEN1], - float xfw[2][PART_LEN1]) { + float xfw[2][PART_LEN1], + int* extreme_filter_divergence) { // Power estimate smoothing coefficients. const float* ptrGCoh = aec->extended_filter_enabled ? WebRtcAec_kExtendedSmoothingCoefficients[aec->mult - 1] @@ -595,19 +609,16 @@ static void SmoothedPSD(AecCore* aec, seSum += aec->se[i]; } - // Divergent filter safeguard. + // Divergent filter safeguard update. aec->divergeState = (aec->divergeState ? 1.05f : 1.0f) * seSum > sdSum; - if (aec->divergeState) - memcpy(efw, dfw, sizeof(efw[0][0]) * 2 * PART_LEN1); - - // Reset if error is significantly larger than nearend (13 dB). - if (!aec->extended_filter_enabled && seSum > (19.95f * sdSum)) - memset(aec->wfBuf, 0, sizeof(aec->wfBuf)); + // Signal extreme filter divergence if the error is significantly larger + // than the nearend (13 dB). + *extreme_filter_divergence = (seSum > (19.95f * sdSum)); } // Window time domain data to be used by the fft. -__inline static void WindowData(float* x_windowed, const float* x) { +static void WindowDataSSE2(float* x_windowed, const float* x) { int i; for (i = 0; i < PART_LEN; i += 4) { const __m128 vec_Buf1 = _mm_loadu_ps(&x[i]); @@ -627,8 +638,8 @@ __inline static void WindowData(float* x_windowed, const float* x) { } // Puts fft output data into a complex valued array. -__inline static void StoreAsComplex(const float* data, - float data_complex[2][PART_LEN1]) { +static void StoreAsComplexSSE2(const float* data, + float data_complex[2][PART_LEN1]) { int i; for (i = 0; i < PART_LEN; i += 4) { const __m128 vec_fft0 = _mm_loadu_ps(&data[2 * i]); @@ -649,32 +660,15 @@ __inline static void StoreAsComplex(const float* data, static void SubbandCoherenceSSE2(AecCore* aec, float efw[2][PART_LEN1], + float dfw[2][PART_LEN1], float xfw[2][PART_LEN1], float* fft, float* cohde, - float* cohxd) { - float dfw[2][PART_LEN1]; + float* cohxd, + int* extreme_filter_divergence) { int i; - if (aec->delayEstCtr == 0) - aec->delayIdx = PartitionDelay(aec); - - // Use delayed far. - memcpy(xfw, - aec->xfwBuf + aec->delayIdx * PART_LEN1, - sizeof(xfw[0][0]) * 2 * PART_LEN1); - - // Windowed near fft - WindowData(fft, aec->dBuf); - aec_rdft_forward_128(fft); - StoreAsComplex(fft, dfw); - - // Windowed error fft - WindowData(fft, aec->eBuf); - aec_rdft_forward_128(fft); - StoreAsComplex(fft, efw); - - SmoothedPSD(aec, efw, dfw, xfw); + SmoothedPSD(aec, efw, dfw, xfw, extreme_filter_divergence); { const __m128 vec_1eminus10 = _mm_set1_ps(1e-10f); @@ -728,4 +722,7 @@ void WebRtcAec_InitAec_SSE2(void) { WebRtcAec_FilterAdaptation = FilterAdaptationSSE2; WebRtcAec_OverdriveAndSuppress = OverdriveAndSuppressSSE2; WebRtcAec_SubbandCoherence = SubbandCoherenceSSE2; + WebRtcAec_StoreAsComplex = StoreAsComplexSSE2; + WebRtcAec_PartitionDelay = PartitionDelaySSE2; + WebRtcAec_WindowData = WindowDataSSE2; } |