| /* |
| * 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] = (int16_t) 0; |
| maskdata->DataBufferHiQ0[k] = (int16_t) 0; |
| } |
| for (k = 0; k < ORDERLO+1; k++) { |
| maskdata->CorrBufLoQQ[k] = (int32_t) 0; |
| maskdata->CorrBufLoQdom[k] = 0; |
| |
| maskdata->PreStateLoGQ15[k] = 0; |
| |
| } |
| for (k = 0; k < ORDERHI+1; k++) { |
| maskdata->CorrBufHiQQ[k] = (int32_t) 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 < 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 < 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 < 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; |
| |
| |
| } |