| /* |
| * 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. |
| */ |
| |
| /* |
| * This is the function to merge a new packet with expanded data after a packet loss. |
| */ |
| |
| #include "dsp.h" |
| |
| #include "signal_processing_library.h" |
| |
| #include "dsp_helpfunctions.h" |
| #include "neteq_error_codes.h" |
| |
| /**************************************************************************** |
| * WebRtcNetEQ_Merge(...) |
| * |
| * This function... |
| * |
| * Input: |
| * - inst : NetEQ DSP instance |
| * - scratchPtr : Pointer to scratch vector. |
| * - decoded : Pointer to new decoded speech. |
| * - len : Number of samples in pw16_decoded. |
| * |
| * |
| * Output: |
| * - inst : Updated user information |
| * - outData : Pointer to a memory space where the output data |
| * should be stored |
| * - pw16_len : Number of samples written to pw16_outData |
| * |
| * Return value : 0 - Ok |
| * <0 - Error |
| */ |
| |
| /* Scratch usage: |
| |
| Type Name size startpos endpos |
| WebRtc_Word16 pw16_expanded 210*fs/8000 0 209*fs/8000 |
| WebRtc_Word16 pw16_expandedLB 100 210*fs/8000 99+210*fs/8000 |
| WebRtc_Word16 pw16_decodedLB 40 100+210*fs/8000 139+210*fs/8000 |
| WebRtc_Word32 pw32_corr 2*60 140+210*fs/8000 260+210*fs/8000 |
| WebRtc_Word16 pw16_corrVec 68 210*fs/8000 67+210*fs/8000 |
| |
| [gap in scratch vector] |
| |
| func WebRtcNetEQ_Expand 40+370*fs/8000 126*fs/8000 39+496*fs/8000 |
| |
| Total: 40+496*fs/8000 |
| */ |
| |
| #define SCRATCH_pw16_expanded 0 |
| #if (defined(NETEQ_48KHZ_WIDEBAND)) |
| #define SCRATCH_pw16_expandedLB 1260 |
| #define SCRATCH_pw16_decodedLB 1360 |
| #define SCRATCH_pw32_corr 1400 |
| #define SCRATCH_pw16_corrVec 1260 |
| #define SCRATCH_NETEQ_EXPAND 756 |
| #elif (defined(NETEQ_32KHZ_WIDEBAND)) |
| #define SCRATCH_pw16_expandedLB 840 |
| #define SCRATCH_pw16_decodedLB 940 |
| #define SCRATCH_pw32_corr 980 |
| #define SCRATCH_pw16_corrVec 840 |
| #define SCRATCH_NETEQ_EXPAND 504 |
| #elif (defined(NETEQ_WIDEBAND)) |
| #define SCRATCH_pw16_expandedLB 420 |
| #define SCRATCH_pw16_decodedLB 520 |
| #define SCRATCH_pw32_corr 560 |
| #define SCRATCH_pw16_corrVec 420 |
| #define SCRATCH_NETEQ_EXPAND 252 |
| #else /* NB */ |
| #define SCRATCH_pw16_expandedLB 210 |
| #define SCRATCH_pw16_decodedLB 310 |
| #define SCRATCH_pw32_corr 350 |
| #define SCRATCH_pw16_corrVec 210 |
| #define SCRATCH_NETEQ_EXPAND 126 |
| #endif |
| |
| int WebRtcNetEQ_Merge(DSPInst_t *inst, |
| #ifdef SCRATCH |
| WebRtc_Word16 *pw16_scratchPtr, |
| #endif |
| WebRtc_Word16 *pw16_decoded, int len, WebRtc_Word16 *pw16_outData, |
| WebRtc_Word16 *pw16_len) |
| { |
| |
| WebRtc_Word16 fs_mult; |
| WebRtc_Word16 fs_shift; |
| WebRtc_Word32 w32_En_new_frame, w32_En_old_frame; |
| WebRtc_Word16 w16_expmax, w16_newmax; |
| WebRtc_Word16 w16_tmp, w16_tmp2; |
| WebRtc_Word32 w32_tmp; |
| #ifdef SCRATCH |
| WebRtc_Word16 *pw16_expanded = pw16_scratchPtr + SCRATCH_pw16_expanded; |
| WebRtc_Word16 *pw16_expandedLB = pw16_scratchPtr + SCRATCH_pw16_expandedLB; |
| WebRtc_Word16 *pw16_decodedLB = pw16_scratchPtr + SCRATCH_pw16_decodedLB; |
| WebRtc_Word32 *pw32_corr = (WebRtc_Word32*) (pw16_scratchPtr + SCRATCH_pw32_corr); |
| WebRtc_Word16 *pw16_corrVec = pw16_scratchPtr + SCRATCH_pw16_corrVec; |
| #else |
| WebRtc_Word16 pw16_expanded[(125+80+5)*FSMULT]; |
| WebRtc_Word16 pw16_expandedLB[100]; |
| WebRtc_Word16 pw16_decodedLB[40]; |
| WebRtc_Word32 pw32_corr[60]; |
| WebRtc_Word16 pw16_corrVec[4+60+4]; |
| #endif |
| WebRtc_Word16 *pw16_corr = &pw16_corrVec[4]; |
| WebRtc_Word16 w16_stopPos = 0, w16_bestIndex, w16_interpLen; |
| WebRtc_Word16 w16_bestVal; /* bestVal is dummy */ |
| WebRtc_Word16 w16_startfact, w16_inc; |
| WebRtc_Word16 w16_expandedLen; |
| WebRtc_Word16 w16_startPos; |
| WebRtc_Word16 w16_expLen, w16_newLen = 0; |
| WebRtc_Word16 *pw16_decodedOut; |
| WebRtc_Word16 w16_muted; |
| |
| int w16_decodedLen = len; |
| |
| #ifdef NETEQ_STEREO |
| MasterSlaveInfo *msInfo = inst->msInfo; |
| #endif |
| |
| fs_mult = WebRtcSpl_DivW32W16ResW16(inst->fs, 8000); |
| fs_shift = 30 - WebRtcSpl_NormW32(fs_mult); /* Note that this is not "exact" for 48kHz */ |
| |
| /************************************* |
| * Generate data to merge with |
| *************************************/ |
| /* |
| * Check how much data that is left since earlier |
| * (at least there should be the overlap)... |
| */ |
| w16_startPos = inst->endPosition - inst->curPosition; |
| /* Get one extra expansion to merge and overlap with */ |
| inst->ExpandInst.w16_stopMuting = 1; |
| inst->ExpandInst.w16_lagsDirection = 1; /* make sure we get the "optimal" lag */ |
| inst->ExpandInst.w16_lagsPosition = -1; /* out of the 3 possible ones */ |
| w16_expandedLen = 0; /* Does not fill any function currently */ |
| |
| if (w16_startPos >= 210 * FSMULT) |
| { |
| /* |
| * The number of samples available in the sync buffer is more than what fits in |
| * pw16_expanded.Keep the first 210*FSMULT samples, but shift them towards the end of |
| * the buffer. This is ok, since all of the buffer will be expand data anyway, so as |
| * long as the beginning is left untouched, we're fine. |
| */ |
| |
| w16_tmp = w16_startPos - 210 * FSMULT; /* length difference */ |
| |
| WEBRTC_SPL_MEMMOVE_W16(&inst->speechBuffer[inst->curPosition+w16_tmp] , |
| &inst->speechBuffer[inst->curPosition], 210*FSMULT); |
| |
| inst->curPosition += w16_tmp; /* move start position of sync buffer accordingly */ |
| w16_startPos = 210 * FSMULT; /* this is the truncated length */ |
| } |
| |
| WebRtcNetEQ_Expand(inst, |
| #ifdef SCRATCH |
| pw16_scratchPtr + SCRATCH_NETEQ_EXPAND, |
| #endif |
| pw16_expanded, /* let Expand write to beginning of pw16_expanded to avoid overflow */ |
| &w16_newLen, 0); |
| |
| /* |
| * Now shift the data in pw16_expanded to where it belongs. |
| * Truncate all that ends up outside the vector. |
| */ |
| |
| WEBRTC_SPL_MEMMOVE_W16(&pw16_expanded[w16_startPos], pw16_expanded, |
| WEBRTC_SPL_MIN(w16_newLen, |
| WEBRTC_SPL_MAX(210*FSMULT - w16_startPos, 0) ) ); |
| |
| inst->ExpandInst.w16_stopMuting = 0; |
| |
| /* Copy what is left since earlier into the expanded vector */ |
| |
| WEBRTC_SPL_MEMCPY_W16(pw16_expanded, &inst->speechBuffer[inst->curPosition], w16_startPos); |
| |
| /* |
| * Do "ugly" copy and paste from the expanded in order to generate more data |
| * to correlate (but not interpolate) with. |
| */ |
| w16_expandedLen = (120 + 80 + 2) * fs_mult; |
| w16_expLen = w16_startPos + w16_newLen; |
| |
| if (w16_expLen < w16_expandedLen) |
| { |
| while ((w16_expLen + w16_newLen) < w16_expandedLen) |
| { |
| WEBRTC_SPL_MEMCPY_W16(&pw16_expanded[w16_expLen], &pw16_expanded[w16_startPos], |
| w16_newLen); |
| w16_expLen += w16_newLen; |
| } |
| |
| /* Copy last part (fraction of a whole expansion) */ |
| |
| WEBRTC_SPL_MEMCPY_W16(&pw16_expanded[w16_expLen], &pw16_expanded[w16_startPos], |
| (w16_expandedLen-w16_expLen)); |
| } |
| w16_expLen = w16_expandedLen; |
| |
| /* Adjust muting factor (main muting factor times expand muting factor) */ |
| inst->w16_muteFactor |
| = (WebRtc_Word16) WEBRTC_SPL_MUL_16_16_RSFT(inst->w16_muteFactor, |
| inst->ExpandInst.w16_expandMuteFactor, 14); |
| |
| /* Adjust muting factor if new vector is more or less of the BGN energy */ |
| len = WEBRTC_SPL_MIN(64*fs_mult, w16_decodedLen); |
| w16_expmax = WebRtcSpl_MaxAbsValueW16(pw16_expanded, (WebRtc_Word16) len); |
| w16_newmax = WebRtcSpl_MaxAbsValueW16(pw16_decoded, (WebRtc_Word16) len); |
| |
| /* Calculate energy of old data */ |
| w16_tmp = 6 + fs_shift - WebRtcSpl_NormW32(WEBRTC_SPL_MUL_16_16(w16_expmax, w16_expmax)); |
| w16_tmp = WEBRTC_SPL_MAX(w16_tmp,0); |
| w32_En_old_frame = WebRtcNetEQ_DotW16W16(pw16_expanded, pw16_expanded, len, w16_tmp); |
| |
| /* Calculate energy of new data */ |
| w16_tmp2 = 6 + fs_shift - WebRtcSpl_NormW32(WEBRTC_SPL_MUL_16_16(w16_newmax, w16_newmax)); |
| w16_tmp2 = WEBRTC_SPL_MAX(w16_tmp2,0); |
| w32_En_new_frame = WebRtcNetEQ_DotW16W16(pw16_decoded, pw16_decoded, len, w16_tmp2); |
| |
| /* Align to same Q-domain */ |
| if (w16_tmp2 > w16_tmp) |
| { |
| w32_En_old_frame = WEBRTC_SPL_RSHIFT_W32(w32_En_old_frame, (w16_tmp2-w16_tmp)); |
| } |
| else |
| { |
| w32_En_new_frame = WEBRTC_SPL_RSHIFT_W32(w32_En_new_frame, (w16_tmp-w16_tmp2)); |
| } |
| |
| /* Calculate muting factor to use for new frame */ |
| if (w32_En_new_frame > w32_En_old_frame) |
| { |
| /* Normalize w32_En_new_frame to 14 bits */ |
| w16_tmp = WebRtcSpl_NormW32(w32_En_new_frame) - 17; |
| w32_En_new_frame = WEBRTC_SPL_SHIFT_W32(w32_En_new_frame, w16_tmp); |
| |
| /* |
| * Put w32_En_old_frame in a domain 14 higher, so that |
| * w32_En_old_frame/w32_En_new_frame is in Q14 |
| */ |
| w16_tmp = w16_tmp + 14; |
| w32_En_old_frame = WEBRTC_SPL_SHIFT_W32(w32_En_old_frame, w16_tmp); |
| w16_tmp |
| = WebRtcSpl_DivW32W16ResW16(w32_En_old_frame, (WebRtc_Word16) w32_En_new_frame); |
| /* Calculate sqrt(w32_En_old_frame/w32_En_new_frame) in Q14 */ |
| w16_muted = (WebRtc_Word16) WebRtcSpl_SqrtFloor( |
| WEBRTC_SPL_LSHIFT_W32((WebRtc_Word32)w16_tmp,14)); |
| } |
| else |
| { |
| w16_muted = 16384; /* Set = 1.0 when old frame has higher energy than new */ |
| } |
| |
| /* Set the raise the continued muting factor w16_muted if w16_muteFactor is lower */ |
| if (w16_muted > inst->w16_muteFactor) |
| { |
| inst->w16_muteFactor = WEBRTC_SPL_MIN(w16_muted, 16384); |
| } |
| |
| #ifdef NETEQ_STEREO |
| |
| /* Sanity for msInfo */ |
| if (msInfo == NULL) |
| { |
| /* this should not happen here */ |
| return MASTER_SLAVE_ERROR; |
| } |
| |
| /* do not downsample and calculate correlations for slave instance(s) */ |
| if ((msInfo->msMode == NETEQ_MASTER) || (msInfo->msMode == NETEQ_MONO)) |
| { |
| #endif |
| |
| /********************************************* |
| * Downsample to 4kHz and find best overlap |
| *********************************************/ |
| |
| /* Downsample to 4 kHz */ |
| if (inst->fs == 8000) |
| { |
| WebRtcSpl_DownsampleFast(&pw16_expanded[2], (WebRtc_Word16) (w16_expandedLen - 2), |
| pw16_expandedLB, (WebRtc_Word16) (100), |
| (WebRtc_Word16*) WebRtcNetEQ_kDownsample8kHzTbl, (WebRtc_Word16) 3, |
| (WebRtc_Word16) 2, (WebRtc_Word16) 0); |
| if (w16_decodedLen <= 80) |
| { |
| /* Not quite long enough, so we have to cheat a bit... */ |
| WebRtc_Word16 temp_len = w16_decodedLen - 2; |
| w16_tmp = temp_len / 2; |
| WebRtcSpl_DownsampleFast(&pw16_decoded[2], temp_len, |
| pw16_decodedLB, w16_tmp, |
| (WebRtc_Word16*) WebRtcNetEQ_kDownsample8kHzTbl, |
| (WebRtc_Word16) 3, (WebRtc_Word16) 2, (WebRtc_Word16) 0); |
| WebRtcSpl_MemSetW16(&pw16_decodedLB[w16_tmp], 0, (40 - w16_tmp)); |
| } |
| else |
| { |
| WebRtcSpl_DownsampleFast(&pw16_decoded[2], |
| (WebRtc_Word16) (w16_decodedLen - 2), pw16_decodedLB, |
| (WebRtc_Word16) (40), (WebRtc_Word16*) WebRtcNetEQ_kDownsample8kHzTbl, |
| (WebRtc_Word16) 3, (WebRtc_Word16) 2, (WebRtc_Word16) 0); |
| } |
| #ifdef NETEQ_WIDEBAND |
| } |
| else if (inst->fs==16000) |
| { |
| WebRtcSpl_DownsampleFast( |
| &pw16_expanded[4], (WebRtc_Word16)(w16_expandedLen-4), |
| pw16_expandedLB, (WebRtc_Word16)(100), |
| (WebRtc_Word16*)WebRtcNetEQ_kDownsample16kHzTbl, (WebRtc_Word16)5, |
| (WebRtc_Word16)4, (WebRtc_Word16)0); |
| if (w16_decodedLen<=160) |
| { |
| /* Not quite long enough, so we have to cheat a bit... */ |
| WebRtc_Word16 temp_len = w16_decodedLen - 4; |
| w16_tmp = temp_len / 4; |
| WebRtcSpl_DownsampleFast( |
| &pw16_decoded[4], temp_len, |
| pw16_decodedLB, w16_tmp, |
| (WebRtc_Word16*)WebRtcNetEQ_kDownsample16kHzTbl, (WebRtc_Word16)5, |
| (WebRtc_Word16)4, (WebRtc_Word16)0); |
| WebRtcSpl_MemSetW16(&pw16_decodedLB[w16_tmp], 0, (40-w16_tmp)); |
| } |
| else |
| { |
| WebRtcSpl_DownsampleFast( |
| &pw16_decoded[4], (WebRtc_Word16)(w16_decodedLen-4), |
| pw16_decodedLB, (WebRtc_Word16)(40), |
| (WebRtc_Word16*)WebRtcNetEQ_kDownsample16kHzTbl, (WebRtc_Word16)5, |
| (WebRtc_Word16)4, (WebRtc_Word16)0); |
| } |
| #endif |
| #ifdef NETEQ_32KHZ_WIDEBAND |
| } |
| else if (inst->fs==32000) |
| { |
| /* |
| * TODO(hlundin) Why is the offset into pw16_expanded 6? |
| */ |
| WebRtcSpl_DownsampleFast( |
| &pw16_expanded[6], (WebRtc_Word16)(w16_expandedLen-6), |
| pw16_expandedLB, (WebRtc_Word16)(100), |
| (WebRtc_Word16*)WebRtcNetEQ_kDownsample32kHzTbl, (WebRtc_Word16)7, |
| (WebRtc_Word16)8, (WebRtc_Word16)0); |
| if (w16_decodedLen<=320) |
| { |
| /* Not quite long enough, so we have to cheat a bit... */ |
| WebRtc_Word16 temp_len = w16_decodedLen - 6; |
| w16_tmp = temp_len / 8; |
| WebRtcSpl_DownsampleFast( |
| &pw16_decoded[6], temp_len, |
| pw16_decodedLB, w16_tmp, |
| (WebRtc_Word16*)WebRtcNetEQ_kDownsample32kHzTbl, (WebRtc_Word16)7, |
| (WebRtc_Word16)8, (WebRtc_Word16)0); |
| WebRtcSpl_MemSetW16(&pw16_decodedLB[w16_tmp], 0, (40-w16_tmp)); |
| } |
| else |
| { |
| WebRtcSpl_DownsampleFast( |
| &pw16_decoded[6], (WebRtc_Word16)(w16_decodedLen-6), |
| pw16_decodedLB, (WebRtc_Word16)(40), |
| (WebRtc_Word16*)WebRtcNetEQ_kDownsample32kHzTbl, (WebRtc_Word16)7, |
| (WebRtc_Word16)8, (WebRtc_Word16)0); |
| } |
| #endif |
| #ifdef NETEQ_48KHZ_WIDEBAND |
| } |
| else /* if (inst->fs==48000) */ |
| { |
| /* |
| * TODO(hlundin) Why is the offset into pw16_expanded 6? |
| */ |
| WebRtcSpl_DownsampleFast( |
| &pw16_expanded[6], (WebRtc_Word16)(w16_expandedLen-6), |
| pw16_expandedLB, (WebRtc_Word16)(100), |
| (WebRtc_Word16*)WebRtcNetEQ_kDownsample48kHzTbl, (WebRtc_Word16)7, |
| (WebRtc_Word16)12, (WebRtc_Word16)0); |
| if (w16_decodedLen<=320) |
| { |
| /* Not quite long enough, so we have to cheat a bit... */ |
| /* |
| * TODO(hlundin): Is this correct? Downsampling is a factor 12 |
| * but w16_tmp = temp_len / 8. |
| * (Was w16_tmp = ((w16_decodedLen-6)>>3) before re-write.) |
| */ |
| WebRtc_Word16 temp_len = w16_decodedLen - 6; |
| w16_tmp = temp_len / 8; |
| WebRtcSpl_DownsampleFast( |
| &pw16_decoded[6], temp_len, |
| pw16_decodedLB, w16_tmp, |
| (WebRtc_Word16*)WebRtcNetEQ_kDownsample48kHzTbl, (WebRtc_Word16)7, |
| (WebRtc_Word16)12, (WebRtc_Word16)0); |
| WebRtcSpl_MemSetW16(&pw16_decodedLB[w16_tmp], 0, (40-w16_tmp)); |
| } |
| else |
| { |
| WebRtcSpl_DownsampleFast( |
| &pw16_decoded[6], (WebRtc_Word16)(w16_decodedLen-6), |
| pw16_decodedLB, (WebRtc_Word16)(40), |
| (WebRtc_Word16*)WebRtcNetEQ_kDownsample48kHzTbl, (WebRtc_Word16)7, |
| (WebRtc_Word16)12, (WebRtc_Word16)0); |
| } |
| #endif |
| } |
| |
| /* Calculate correlation without any normalization (40 samples) */ |
| w16_tmp = WebRtcSpl_DivW32W16ResW16((WebRtc_Word32) inst->ExpandInst.w16_maxLag, |
| (WebRtc_Word16) (fs_mult * 2)) + 1; |
| w16_stopPos = WEBRTC_SPL_MIN(60, w16_tmp); |
| w32_tmp = WEBRTC_SPL_MUL_16_16(w16_expmax, w16_newmax); |
| if (w32_tmp > 26843546) |
| { |
| w16_tmp = 3; |
| } |
| else |
| { |
| w16_tmp = 0; |
| } |
| |
| WebRtcNetEQ_CrossCorr(pw32_corr, pw16_decodedLB, pw16_expandedLB, 40, |
| (WebRtc_Word16) w16_stopPos, w16_tmp, 1); |
| |
| /* Normalize correlation to 14 bits and put in a WebRtc_Word16 vector */ |
| WebRtcSpl_MemSetW16(pw16_corrVec, 0, (4 + 60 + 4)); |
| w32_tmp = WebRtcSpl_MaxAbsValueW32(pw32_corr, w16_stopPos); |
| w16_tmp = 17 - WebRtcSpl_NormW32(w32_tmp); |
| w16_tmp = WEBRTC_SPL_MAX(0, w16_tmp); |
| |
| WebRtcSpl_VectorBitShiftW32ToW16(pw16_corr, w16_stopPos, pw32_corr, w16_tmp); |
| |
| /* Calculate allowed starting point for peak finding. |
| The peak location bestIndex must fulfill two criteria: |
| (1) w16_bestIndex+w16_decodedLen < inst->timestampsPerCall+inst->ExpandInst.w16_overlap |
| (2) w16_bestIndex+w16_decodedLen < w16_startPos */ |
| w16_tmp = WEBRTC_SPL_MAX(0, WEBRTC_SPL_MAX(w16_startPos, |
| inst->timestampsPerCall+inst->ExpandInst.w16_overlap) - w16_decodedLen); |
| /* Downscale starting index to 4kHz domain */ |
| w16_tmp2 = WebRtcSpl_DivW32W16ResW16((WebRtc_Word32) w16_tmp, |
| (WebRtc_Word16) (fs_mult << 1)); |
| |
| #ifdef NETEQ_STEREO |
| } /* end if (msInfo->msMode != NETEQ_SLAVE) */ |
| |
| if ((msInfo->msMode == NETEQ_MASTER) || (msInfo->msMode == NETEQ_MONO)) |
| { |
| /* This is master or mono instance; find peak */ |
| WebRtcNetEQ_PeakDetection(&pw16_corr[w16_tmp2], w16_stopPos, 1, fs_mult, &w16_bestIndex, |
| &w16_bestVal); |
| w16_bestIndex += w16_tmp; /* compensate for modified starting index */ |
| msInfo->bestIndex = w16_bestIndex; |
| } |
| else if (msInfo->msMode == NETEQ_SLAVE) |
| { |
| /* Get peak location from master instance */ |
| w16_bestIndex = msInfo->bestIndex; |
| } |
| else |
| { |
| /* Invalid mode */ |
| return MASTER_SLAVE_ERROR; |
| } |
| |
| #else /* NETEQ_STEREO */ |
| |
| /* Find peak */ |
| WebRtcNetEQ_PeakDetection(&pw16_corr[w16_tmp2], w16_stopPos, 1, fs_mult, &w16_bestIndex, |
| &w16_bestVal); |
| w16_bestIndex += w16_tmp; /* compensate for modified starting index */ |
| |
| #endif /* NETEQ_STEREO */ |
| |
| /* |
| * Ensure that underrun does not occur for 10ms case => we have to get at least |
| * 10ms + overlap . (This should never happen thanks to the above modification of |
| * peak-finding starting point.) |
| * */ |
| while ((w16_bestIndex + w16_decodedLen) < (inst->timestampsPerCall |
| + inst->ExpandInst.w16_overlap) || w16_bestIndex + w16_decodedLen < w16_startPos) |
| { |
| w16_bestIndex += w16_newLen; /* Jump one lag ahead */ |
| } |
| pw16_decodedOut = pw16_outData + w16_bestIndex; |
| |
| /* Mute the new decoded data if needed (and unmute it linearly) */ |
| w16_interpLen = WEBRTC_SPL_MIN(60*fs_mult, |
| w16_expandedLen-w16_bestIndex); /* this is the overlapping part of pw16_expanded */ |
| w16_interpLen = WEBRTC_SPL_MIN(w16_interpLen, w16_decodedLen); |
| w16_inc = WebRtcSpl_DivW32W16ResW16(4194, |
| fs_mult); /* in Q20, 0.004 for NB and 0.002 for WB */ |
| if (inst->w16_muteFactor < 16384) |
| { |
| WebRtcNetEQ_UnmuteSignal(pw16_decoded, &inst->w16_muteFactor, pw16_decoded, w16_inc, |
| (WebRtc_Word16) w16_interpLen); |
| WebRtcNetEQ_UnmuteSignal(&pw16_decoded[w16_interpLen], &inst->w16_muteFactor, |
| &pw16_decodedOut[w16_interpLen], w16_inc, |
| (WebRtc_Word16) (w16_decodedLen - w16_interpLen)); |
| } |
| else |
| { |
| /* No muting needed */ |
| |
| WEBRTC_SPL_MEMMOVE_W16(&pw16_decodedOut[w16_interpLen], &pw16_decoded[w16_interpLen], |
| (w16_decodedLen-w16_interpLen)); |
| } |
| |
| /* Do overlap and interpolate linearly */ |
| w16_inc = WebRtcSpl_DivW32W16ResW16(16384, (WebRtc_Word16) (w16_interpLen + 1)); /* Q14 */ |
| w16_startfact = (16384 - w16_inc); |
| WEBRTC_SPL_MEMMOVE_W16(pw16_outData, pw16_expanded, w16_bestIndex); |
| WebRtcNetEQ_MixVoiceUnvoice(pw16_decodedOut, &pw16_expanded[w16_bestIndex], pw16_decoded, |
| &w16_startfact, w16_inc, w16_interpLen); |
| |
| inst->w16_mode = MODE_MERGE; |
| inst->ExpandInst.w16_consecExp = 0; /* Last was not expand any more */ |
| |
| /* New added length (w16_startPos samples were borrowed) */ |
| *pw16_len = w16_bestIndex + w16_decodedLen - w16_startPos; |
| |
| /* Update VQmon parameter */ |
| inst->w16_concealedTS += (*pw16_len - w16_decodedLen); |
| inst->w16_concealedTS = WEBRTC_SPL_MAX(0, inst->w16_concealedTS); |
| |
| /* Update in-call and post-call statistics */ |
| if (inst->ExpandInst.w16_expandMuteFactor == 0) |
| { |
| /* expansion generates noise only */ |
| inst->statInst.expandedNoiseSamples += (*pw16_len - w16_decodedLen); |
| } |
| else |
| { |
| /* expansion generates more than only noise */ |
| inst->statInst.expandedVoiceSamples += (*pw16_len - w16_decodedLen); |
| } |
| inst->statInst.expandLength += (*pw16_len - w16_decodedLen); |
| |
| |
| /* Copy back the first part of the data to the speechHistory */ |
| |
| WEBRTC_SPL_MEMCPY_W16(&inst->speechBuffer[inst->curPosition], pw16_outData, w16_startPos); |
| |
| |
| /* Move data to within outData */ |
| |
| WEBRTC_SPL_MEMMOVE_W16(pw16_outData, &pw16_outData[w16_startPos], (*pw16_len)); |
| |
| return 0; |
| } |
| |
| #undef SCRATCH_pw16_expanded |
| #undef SCRATCH_pw16_expandedLB |
| #undef SCRATCH_pw16_decodedLB |
| #undef SCRATCH_pw32_corr |
| #undef SCRATCH_pw16_corrVec |
| #undef SCRATCH_NETEQ_EXPAND |
