| /* |
| * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include "webrtc/modules/audio_processing/aecm/aecm_core.h" |
| |
| #include <arm_neon.h> |
| #include <assert.h> |
| |
| #include "webrtc/common_audio/signal_processing/include/real_fft.h" |
| |
| // TODO(kma): Re-write the corresponding assembly file, the offset |
| // generating script and makefile, to replace these C functions. |
| |
| // Square root of Hanning window in Q14. |
| const ALIGN8_BEG int16_t WebRtcAecm_kSqrtHanning[] ALIGN8_END = { |
| 0, |
| 399, 798, 1196, 1594, 1990, 2386, 2780, 3172, |
| 3562, 3951, 4337, 4720, 5101, 5478, 5853, 6224, |
| 6591, 6954, 7313, 7668, 8019, 8364, 8705, 9040, |
| 9370, 9695, 10013, 10326, 10633, 10933, 11227, 11514, |
| 11795, 12068, 12335, 12594, 12845, 13089, 13325, 13553, |
| 13773, 13985, 14189, 14384, 14571, 14749, 14918, 15079, |
| 15231, 15373, 15506, 15631, 15746, 15851, 15947, 16034, |
| 16111, 16179, 16237, 16286, 16325, 16354, 16373, 16384 |
| }; |
| |
| // Square root of Hanning window in Q14, in reversed order. |
| static const ALIGN8_BEG int16_t kSqrtHanningReversed[] ALIGN8_END = { |
| 16384, 16373, 16354, 16325, 16286, 16237, 16179, 16111, |
| 16034, 15947, 15851, 15746, 15631, 15506, 15373, 15231, |
| 15079, 14918, 14749, 14571, 14384, 14189, 13985, 13773, |
| 13553, 13325, 13089, 12845, 12594, 12335, 12068, 11795, |
| 11514, 11227, 10933, 10633, 10326, 10013, 9695, 9370, |
| 9040, 8705, 8364, 8019, 7668, 7313, 6954, 6591, |
| 6224, 5853, 5478, 5101, 4720, 4337, 3951, 3562, |
| 3172, 2780, 2386, 1990, 1594, 1196, 798, 399 |
| }; |
| |
| void WebRtcAecm_WindowAndFFTNeon(AecmCore_t* aecm, |
| int16_t* fft, |
| const int16_t* time_signal, |
| complex16_t* freq_signal, |
| int time_signal_scaling) { |
| int i = 0; |
| const int16_t* p_time_signal = time_signal; |
| const int16_t* p_time_signal_offset = &time_signal[PART_LEN]; |
| const int16_t* p_hanning = WebRtcAecm_kSqrtHanning; |
| const int16_t* p_hanning_reversed = kSqrtHanningReversed; |
| int16_t* p_fft = fft; |
| int16_t* p_fft_offset = &fft[PART_LEN2]; |
| |
| assert((uintptr_t)p_time_signal % 8 == 0); |
| assert((uintptr_t)freq_signal % 32 == 0); |
| assert((uintptr_t)p_hanning % 8 == 0); |
| assert((uintptr_t)p_fft % 16 == 0); |
| |
| __asm __volatile( |
| "vdup.16 d16, %0\n\t" |
| "vmov.i16 d21, #0\n\t" |
| "vmov.i16 d27, #0\n\t" |
| : |
| :"r"(time_signal_scaling) |
| : "d16", "d21", "d27" |
| ); |
| |
| for (i = 0; i < PART_LEN; i += 4) { |
| __asm __volatile( |
| "vld1.16 d0, [%[p_time_signal], :64]!\n\t" |
| "vld1.16 d22, [%[p_time_signal_offset], :64]!\n\t" |
| "vld1.16 d17, [%[p_hanning], :64]!\n\t" |
| "vld1.16 d23, [%[p_hanning_reversed], :64]!\n\t" |
| "vshl.s16 d18, d0, d16\n\t" |
| "vshl.s16 d22, d22, d16\n\t" |
| "vmull.s16 q9, d18, d17\n\t" |
| "vmull.s16 q12, d22, d23\n\t" |
| "vshrn.i32 d20, q9, #14\n\t" |
| "vshrn.i32 d26, q12, #14\n\t" |
| "vst2.16 {d20, d21}, [%[p_fft], :128]!\n\t" |
| "vst2.16 {d26, d27}, [%[p_fft_offset], :128]!\n\t" |
| :[p_time_signal]"+r"(p_time_signal), |
| [p_time_signal_offset]"+r"(p_time_signal_offset), |
| [p_hanning]"+r"(p_hanning), |
| [p_hanning_reversed]"+r"(p_hanning_reversed), |
| [p_fft]"+r"(p_fft), |
| [p_fft_offset]"+r"(p_fft_offset) |
| : |
| :"d0", "d16", "d17", "d18", "d19", "d20", "d21", |
| "d22", "d23", "d24", "d25", "d26", "d27" |
| ); |
| } |
| |
| // Do forward FFT, then take only the first PART_LEN complex samples, |
| // and change signs of the imaginary parts. |
| WebRtcSpl_RealForwardFFT(aecm->real_fft, (int16_t*)fft, |
| (int16_t*)freq_signal); |
| |
| for (i = 0; i < PART_LEN; i += 8) { |
| __asm __volatile( |
| "vld2.16 {d20, d21, d22, d23}, [%[freq_signal], :256]\n\t" |
| "vneg.s16 d22, d22\n\t" |
| "vneg.s16 d23, d23\n\t" |
| "vst2.16 {d20, d21, d22, d23}, [%[freq_signal], :256]!\n\t" |
| :[freq_signal]"+r"(freq_signal) |
| : |
| : "d20", "d21", "d22", "d23" |
| ); |
| } |
| } |
| |
| void WebRtcAecm_InverseFFTAndWindowNeon(AecmCore_t* aecm, |
| int16_t* fft, |
| complex16_t* efw, |
| int16_t* output, |
| const int16_t* nearendClean) { |
| int i, j, outCFFT; |
| |
| assert((uintptr_t)efw % 32 == 0); |
| assert((uintptr_t)fft % 16 == 0); |
| assert((uintptr_t)output% 8 == 0); |
| assert((uintptr_t)WebRtcAecm_kSqrtHanning % 8 == 0); |
| assert((uintptr_t)kSqrtHanningReversed % 8 == 0); |
| assert((uintptr_t)(aecm->outBuf) % 8 == 0); |
| assert((uintptr_t)(aecm->xBuf) % 32 == 0); |
| assert((uintptr_t)(aecm->dBufNoisy) % 32 == 0); |
| assert((uintptr_t)(aecm->dBufClean) % 32 == 0); |
| |
| // Synthesis |
| complex16_t* p_efw = efw; |
| int16_t* p_fft = fft; |
| int16_t* p_fft_offset = &fft[PART_LEN4 - 6]; |
| |
| for (i = 0, j = 0; i < PART_LEN; i += 4, j += 8) { |
| // We overwrite two more elements in fft[], but it's ok. |
| __asm __volatile( |
| "vld2.16 {q10}, [%[p_efw], :128]!\n\t" |
| "vmov q11, q10\n\t" |
| "vneg.s16 d23, d23\n\t" |
| "vst2.16 {d22, d23}, [%[p_fft], :128]!\n\t" |
| "vrev64.16 q10, q10\n\t" |
| "vst2.16 {q10}, [%[p_fft_offset]], %[offset]\n\t" |
| :[p_efw]"+r"(p_efw), |
| [p_fft]"+r"(p_fft), |
| [p_fft_offset]"+r"(p_fft_offset) |
| :[offset]"r"(-16) |
| :"d20", "d21", "d22", "d23" |
| ); |
| } |
| |
| fft[PART_LEN2] = efw[PART_LEN].real; |
| fft[PART_LEN2 + 1] = -efw[PART_LEN].imag; |
| |
| // Inverse FFT. Then take only the real values, and keep outCFFT |
| // to scale the samples. |
| outCFFT = WebRtcSpl_RealInverseFFT(aecm->real_fft, fft, (int16_t*)efw); |
| |
| int32x4_t tmp32x4_2; |
| __asm __volatile("vdup.32 %q0, %1" : "=w"(tmp32x4_2) : "r"((int32_t) |
| (outCFFT - aecm->dfaCleanQDomain))); |
| for (i = 0; i < PART_LEN; i += 4) { |
| int16x4_t tmp16x4_0; |
| int16x4_t tmp16x4_1; |
| int32x4_t tmp32x4_0; |
| int32x4_t tmp32x4_1; |
| |
| //efw[i].real = (int16_t)WEBRTC_SPL_MUL_16_16_RSFT_WITH_ROUND( |
| // efw[i].real, WebRtcAecm_kSqrtHanning[i], 14); |
| __asm __volatile("vld1.16 %P0, [%1, :64]" : "=w"(tmp16x4_0) : "r"(&efw[i].real)); |
| __asm __volatile("vld1.16 %P0, [%1, :64]" : "=w"(tmp16x4_1) : "r"(&WebRtcAecm_kSqrtHanning[i])); |
| __asm __volatile("vmull.s16 %q0, %P1, %P2" : "=w"(tmp32x4_0) : "w"(tmp16x4_0), "w"(tmp16x4_1)); |
| __asm __volatile("vrshr.s32 %q0, %q1, #14" : "=w"(tmp32x4_0) : "0"(tmp32x4_0)); |
| |
| //tmp32no1 = WEBRTC_SPL_SHIFT_W32((int32_t)efw[i].real, |
| // outCFFT - aecm->dfaCleanQDomain); |
| __asm __volatile("vshl.s32 %q0, %q1, %q2" : "=w"(tmp32x4_0) : "0"(tmp32x4_0), "w"(tmp32x4_2)); |
| |
| //efw[i].real = (int16_t)WEBRTC_SPL_SAT(WEBRTC_SPL_WORD16_MAX, |
| // tmp32no1 + aecm->outBuf[i], WEBRTC_SPL_WORD16_MIN); |
| // output[i] = efw[i].real; |
| __asm __volatile("vld1.16 %P0, [%1, :64]" : "=w"(tmp16x4_0) : "r"(&aecm->outBuf[i])); |
| __asm __volatile("vmovl.s16 %q0, %P1" : "=w"(tmp32x4_1) : "w"(tmp16x4_0)); |
| __asm __volatile("vadd.i32 %q0, %q1" : : "w"(tmp32x4_0), "w"(tmp32x4_1)); |
| __asm __volatile("vqmovn.s32 %P0, %q1" : "=w"(tmp16x4_0) : "w"(tmp32x4_0)); |
| __asm __volatile("vst1.16 %P0, [%1, :64]" : : "w"(tmp16x4_0), "r"(&efw[i].real)); |
| __asm __volatile("vst1.16 %P0, [%1, :64]" : : "w"(tmp16x4_0), "r"(&output[i])); |
| |
| // tmp32no1 = WEBRTC_SPL_MUL_16_16_RSFT( |
| // efw[PART_LEN + i].real, WebRtcAecm_kSqrtHanning[PART_LEN - i], 14); |
| __asm __volatile("vld1.16 %P0, [%1, :64]" : "=w"(tmp16x4_0) : "r"(&efw[PART_LEN + i].real)); |
| __asm __volatile("vld1.16 %P0, [%1, :64]" : "=w"(tmp16x4_1) : "r"(&kSqrtHanningReversed[i])); |
| __asm __volatile("vmull.s16 %q0, %P1, %P2" : "=w"(tmp32x4_0) : "w"(tmp16x4_0), "w"(tmp16x4_1)); |
| __asm __volatile("vshr.s32 %q0, %q1, #14" : "=w"(tmp32x4_0) : "0"(tmp32x4_0)); |
| |
| // tmp32no1 = WEBRTC_SPL_SHIFT_W32(tmp32no1, outCFFT - aecm->dfaCleanQDomain); |
| __asm __volatile("vshl.s32 %q0, %q1, %q2" : "=w"(tmp32x4_0) : "0"(tmp32x4_0), "w"(tmp32x4_2)); |
| // aecm->outBuf[i] = (int16_t)WEBRTC_SPL_SAT( |
| // WEBRTC_SPL_WORD16_MAX, tmp32no1, WEBRTC_SPL_WORD16_MIN); |
| __asm __volatile("vqmovn.s32 %P0, %q1" : "=w"(tmp16x4_0) : "w"(tmp32x4_0)); |
| __asm __volatile("vst1.16 %P0, [%1, :64]" : : "w"(tmp16x4_0), "r"(&aecm->outBuf[i])); |
| } |
| |
| // Copy the current block to the old position (outBuf is shifted elsewhere). |
| for (i = 0; i < PART_LEN; i += 16) { |
| __asm __volatile("vld1.16 {d20, d21, d22, d23}, [%0, :256]" : : |
| "r"(&aecm->xBuf[i + PART_LEN]) : "q10"); |
| __asm __volatile("vst1.16 {d20, d21, d22, d23}, [%0, :256]" : : "r"(&aecm->xBuf[i]): "q10"); |
| } |
| for (i = 0; i < PART_LEN; i += 16) { |
| __asm __volatile("vld1.16 {d20, d21, d22, d23}, [%0, :256]" : : |
| "r"(&aecm->dBufNoisy[i + PART_LEN]) : "q10"); |
| __asm __volatile("vst1.16 {d20, d21, d22, d23}, [%0, :256]" : : |
| "r"(&aecm->dBufNoisy[i]): "q10"); |
| } |
| if (nearendClean != NULL) { |
| for (i = 0; i < PART_LEN; i += 16) { |
| __asm __volatile("vld1.16 {d20, d21, d22, d23}, [%0, :256]" : : |
| "r"(&aecm->dBufClean[i + PART_LEN]) : "q10"); |
| __asm __volatile("vst1.16 {d20, d21, d22, d23}, [%0, :256]" : : |
| "r"(&aecm->dBufClean[i]): "q10"); |
| } |
| } |
| } |
| |
| void WebRtcAecm_CalcLinearEnergiesNeon(AecmCore_t* aecm, |
| const uint16_t* far_spectrum, |
| int32_t* echo_est, |
| uint32_t* far_energy, |
| uint32_t* echo_energy_adapt, |
| uint32_t* echo_energy_stored) { |
| int i; |
| |
| register uint32_t far_energy_r; |
| register uint32_t echo_energy_stored_r; |
| register uint32_t echo_energy_adapt_r; |
| |
| assert((uintptr_t)echo_est % 32 == 0); |
| assert((uintptr_t)(aecm->channelStored) % 16 == 0); |
| assert((uintptr_t)(aecm->channelAdapt16) % 16 == 0); |
| assert((uintptr_t)(aecm->channelStored) % 16 == 0); |
| assert((uintptr_t)(aecm->channelStored) % 16 == 0); |
| |
| __asm __volatile("vmov.i32 q14, #0" : : : "q14"); // far_energy |
| __asm __volatile("vmov.i32 q8, #0" : : : "q8"); // echo_energy_stored |
| __asm __volatile("vmov.i32 q9, #0" : : : "q9"); // echo_energy_adapt |
| |
| for (i = 0; i < PART_LEN - 7; i += 8) { |
| // far_energy += (uint32_t)(far_spectrum[i]); |
| __asm __volatile("vld1.16 {d26, d27}, [%0]" : : "r"(&far_spectrum[i]) : "q13"); |
| __asm __volatile("vaddw.u16 q14, q14, d26" : : : "q14", "q13"); |
| __asm __volatile("vaddw.u16 q14, q14, d27" : : : "q14", "q13"); |
| |
| // Get estimated echo energies for adaptive channel and stored channel. |
| // echoEst[i] = WEBRTC_SPL_MUL_16_U16(aecm->channelStored[i], far_spectrum[i]); |
| __asm __volatile("vld1.16 {d24, d25}, [%0, :128]" : : "r"(&aecm->channelStored[i]) : "q12"); |
| __asm __volatile("vmull.u16 q10, d26, d24" : : : "q12", "q13", "q10"); |
| __asm __volatile("vmull.u16 q11, d27, d25" : : : "q12", "q13", "q11"); |
| __asm __volatile("vst1.32 {d20, d21, d22, d23}, [%0, :256]" : : "r"(&echo_est[i]): |
| "q10", "q11"); |
| |
| // echo_energy_stored += (uint32_t)echoEst[i]; |
| __asm __volatile("vadd.u32 q8, q10" : : : "q10", "q8"); |
| __asm __volatile("vadd.u32 q8, q11" : : : "q11", "q8"); |
| |
| // echo_energy_adapt += aecm->channelAdapt16[i] * far_spectrum[i]; |
| __asm __volatile("vld1.16 {d24, d25}, [%0, :128]" : : "r"(&aecm->channelAdapt16[i]) : "q12"); |
| __asm __volatile("vmull.u16 q10, d26, d24" : : : "q12", "q13", "q10"); |
| __asm __volatile("vmull.u16 q11, d27, d25" : : : "q12", "q13", "q11"); |
| __asm __volatile("vadd.u32 q9, q10" : : : "q9", "q15"); |
| __asm __volatile("vadd.u32 q9, q11" : : : "q9", "q11"); |
| } |
| |
| __asm __volatile("vadd.u32 d28, d29" : : : "q14"); |
| __asm __volatile("vpadd.u32 d28, d28" : : : "q14"); |
| __asm __volatile("vmov.32 %0, d28[0]" : "=r"(far_energy_r): : "q14"); |
| |
| __asm __volatile("vadd.u32 d18, d19" : : : "q9"); |
| __asm __volatile("vpadd.u32 d18, d18" : : : "q9"); |
| __asm __volatile("vmov.32 %0, d18[0]" : "=r"(echo_energy_adapt_r): : "q9"); |
| |
| __asm __volatile("vadd.u32 d16, d17" : : : "q8"); |
| __asm __volatile("vpadd.u32 d16, d16" : : : "q8"); |
| __asm __volatile("vmov.32 %0, d16[0]" : "=r"(echo_energy_stored_r): : "q8"); |
| |
| // Get estimated echo energies for adaptive channel and stored channel. |
| echo_est[i] = WEBRTC_SPL_MUL_16_U16(aecm->channelStored[i], far_spectrum[i]); |
| *echo_energy_stored = echo_energy_stored_r + (uint32_t)echo_est[i]; |
| *far_energy = far_energy_r + (uint32_t)(far_spectrum[i]); |
| *echo_energy_adapt = echo_energy_adapt_r + |
| aecm->channelAdapt16[i] * far_spectrum[i]; |
| } |
| |
| void WebRtcAecm_StoreAdaptiveChannelNeon(AecmCore_t* aecm, |
| const uint16_t* far_spectrum, |
| int32_t* echo_est) { |
| int i; |
| |
| assert((uintptr_t)echo_est % 32 == 0); |
| assert((uintptr_t)(aecm->channelStored) % 16 == 0); |
| assert((uintptr_t)(aecm->channelAdapt16) % 16 == 0); |
| |
| // During startup we store the channel every block. |
| // Recalculate echo estimate. |
| for (i = 0; i < PART_LEN - 7; i += 8) { |
| // aecm->channelStored[i] = acem->channelAdapt16[i]; |
| // echo_est[i] = WEBRTC_SPL_MUL_16_U16(aecm->channelStored[i], far_spectrum[i]); |
| __asm __volatile("vld1.16 {d26, d27}, [%0]" : : "r"(&far_spectrum[i]) : "q13"); |
| __asm __volatile("vld1.16 {d24, d25}, [%0, :128]" : : "r"(&aecm->channelAdapt16[i]) : "q12"); |
| __asm __volatile("vst1.16 {d24, d25}, [%0, :128]" : : "r"(&aecm->channelStored[i]) : "q12"); |
| __asm __volatile("vmull.u16 q10, d26, d24" : : : "q12", "q13", "q10"); |
| __asm __volatile("vmull.u16 q11, d27, d25" : : : "q12", "q13", "q11"); |
| __asm __volatile("vst1.16 {d20, d21, d22, d23}, [%0, :256]" : : |
| "r"(&echo_est[i]) : "q10", "q11"); |
| } |
| aecm->channelStored[i] = aecm->channelAdapt16[i]; |
| echo_est[i] = WEBRTC_SPL_MUL_16_U16(aecm->channelStored[i], far_spectrum[i]); |
| } |
| |
| void WebRtcAecm_ResetAdaptiveChannelNeon(AecmCore_t* aecm) { |
| int i; |
| |
| assert((uintptr_t)(aecm->channelStored) % 16 == 0); |
| assert((uintptr_t)(aecm->channelAdapt16) % 16 == 0); |
| assert((uintptr_t)(aecm->channelAdapt32) % 32 == 0); |
| |
| for (i = 0; i < PART_LEN - 7; i += 8) { |
| // aecm->channelAdapt16[i] = aecm->channelStored[i]; |
| // aecm->channelAdapt32[i] = WEBRTC_SPL_LSHIFT_W32((int32_t) |
| // aecm->channelStored[i], 16); |
| __asm __volatile("vld1.16 {d24, d25}, [%0, :128]" : : |
| "r"(&aecm->channelStored[i]) : "q12"); |
| __asm __volatile("vst1.16 {d24, d25}, [%0, :128]" : : |
| "r"(&aecm->channelAdapt16[i]) : "q12"); |
| __asm __volatile("vshll.s16 q10, d24, #16" : : : "q12", "q13", "q10"); |
| __asm __volatile("vshll.s16 q11, d25, #16" : : : "q12", "q13", "q11"); |
| __asm __volatile("vst1.16 {d20, d21, d22, d23}, [%0, :256]" : : |
| "r"(&aecm->channelAdapt32[i]): "q10", "q11"); |
| } |
| aecm->channelAdapt16[i] = aecm->channelStored[i]; |
| aecm->channelAdapt32[i] = WEBRTC_SPL_LSHIFT_W32( |
| (int32_t)aecm->channelStored[i], 16); |
| } |
