diff options
Diffstat (limited to 'src/modules/audio_coding/codecs/isac/fix/source/initialize.c')
-rw-r--r-- | src/modules/audio_coding/codecs/isac/fix/source/initialize.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/modules/audio_coding/codecs/isac/fix/source/initialize.c b/src/modules/audio_coding/codecs/isac/fix/source/initialize.c new file mode 100644 index 0000000000..4d11af53a7 --- /dev/null +++ b/src/modules/audio_coding/codecs/isac/fix/source/initialize.c @@ -0,0 +1,175 @@ +/* + * Copyright (c) 2011 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. + */ + +/* + * initialize.c + * + * Internal initfunctions + * + */ + +#include "codec.h" +#include "structs.h" +#include "pitch_estimator.h" + + +void WebRtcIsacfix_InitMaskingEnc(MaskFiltstr_enc *maskdata) { + + int k; + + for (k = 0; k < WINLEN; k++) { + maskdata->DataBufferLoQ0[k] = (WebRtc_Word16) 0; + maskdata->DataBufferHiQ0[k] = (WebRtc_Word16) 0; + } + for (k = 0; k < ORDERLO+1; k++) { + maskdata->CorrBufLoQQ[k] = (WebRtc_Word32) 0; + maskdata->CorrBufLoQdom[k] = 0; + + maskdata->PreStateLoGQ15[k] = 0; + + } + for (k = 0; k < ORDERHI+1; k++) { + maskdata->CorrBufHiQQ[k] = (WebRtc_Word32) 0; + maskdata->CorrBufHiQdom[k] = 0; + maskdata->PreStateHiGQ15[k] = 0; + } + + maskdata->OldEnergy = 10; + + return; +} + +void WebRtcIsacfix_InitMaskingDec(MaskFiltstr_dec *maskdata) { + + int k; + + for (k = 0; k < ORDERLO+1; k++) + { + maskdata->PostStateLoGQ0[k] = 0; + } + for (k = 0; k < ORDERHI+1; k++) + { + maskdata->PostStateHiGQ0[k] = 0; + } + + maskdata->OldEnergy = 10; + + return; +} + + + + + + + +void WebRtcIsacfix_InitPreFilterbank(PreFiltBankstr *prefiltdata) +{ + int k; + + for (k = 0; k < QLOOKAHEAD; k++) { + prefiltdata->INLABUF1_fix[k] = 0; + prefiltdata->INLABUF2_fix[k] = 0; + } + for (k = 0; k < WEBRTC_SPL_MUL_16_16(2,(QORDER-1)); k++) { + + prefiltdata->INSTAT1_fix[k] = 0; + prefiltdata->INSTAT2_fix[k] = 0; + } + + /* High pass filter states */ + prefiltdata->HPstates_fix[0] = 0; + prefiltdata->HPstates_fix[1] = 0; + + return; +} + +void WebRtcIsacfix_InitPostFilterbank(PostFiltBankstr *postfiltdata) +{ + int k; + + for (k = 0; k < WEBRTC_SPL_MUL_16_16(2, POSTQORDER); k++) { + + postfiltdata->STATE_0_LOWER_fix[k] = 0; + postfiltdata->STATE_0_UPPER_fix[k] = 0; + } + + /* High pass filter states */ + + postfiltdata->HPstates1_fix[0] = 0; + postfiltdata->HPstates1_fix[1] = 0; + + postfiltdata->HPstates2_fix[0] = 0; + postfiltdata->HPstates2_fix[1] = 0; + + return; +} + + +void WebRtcIsacfix_InitPitchFilter(PitchFiltstr *pitchfiltdata) +{ + int k; + + for (k = 0; k < PITCH_BUFFSIZE; k++) + pitchfiltdata->ubufQQ[k] = 0; + for (k = 0; k < (PITCH_DAMPORDER); k++) + pitchfiltdata->ystateQQ[k] = 0; + + pitchfiltdata->oldlagQ7 = 6400; /* 50.0 in Q7 */ + pitchfiltdata->oldgainQ12 = 0; +} + +void WebRtcIsacfix_InitPitchAnalysis(PitchAnalysisStruct *State) +{ + int k; + + for (k = 0; k < PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2; k++) { + State->dec_buffer16[k] = 0; + } + for (k = 0; k < WEBRTC_SPL_MUL_16_16(2, ALLPASSSECTIONS)+1; k++) { + State->decimator_state32[k] = 0; + } + + for (k = 0; k < QLOOKAHEAD; k++) + State->inbuf[k] = 0; + + WebRtcIsacfix_InitPitchFilter(&(State->PFstr_wght)); + + WebRtcIsacfix_InitPitchFilter(&(State->PFstr)); +} + + +void WebRtcIsacfix_InitPlc( PLCstr *State ) +{ + State->decayCoeffPriodic = WEBRTC_SPL_WORD16_MAX; + State->decayCoeffNoise = WEBRTC_SPL_WORD16_MAX; + + State->used = PLC_WAS_USED; + + WebRtcSpl_ZerosArrayW16(State->overlapLP, RECOVERY_OVERLAP); + WebRtcSpl_ZerosArrayW16(State->lofilt_coefQ15, ORDERLO); + WebRtcSpl_ZerosArrayW16(State->hifilt_coefQ15, ORDERHI ); + + State->AvgPitchGain_Q12 = 0; + State->lastPitchGain_Q12 = 0; + State->lastPitchLag_Q7 = 0; + State->gain_lo_hiQ17[0]=State->gain_lo_hiQ17[1] = 0; + WebRtcSpl_ZerosArrayW16(State->prevPitchInvIn, FRAMESAMPLES/2); + WebRtcSpl_ZerosArrayW16(State->prevPitchInvOut, PITCH_MAX_LAG + 10 ); + WebRtcSpl_ZerosArrayW32(State->prevHP, PITCH_MAX_LAG + 10 ); + State->pitchCycles = 0; + State->A = 0; + State->B = 0; + State->pitchIndex = 0; + State->stretchLag = 240; + State->seed = 4447; + + +} |