1 /* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 /* 12 * initialize.c 13 * 14 * Internal initfunctions 15 * 16 */ 17 18 #include "codec.h" 19 #include "structs.h" 20 #include "pitch_estimator.h" 21 22 23 void WebRtcIsacfix_InitMaskingEnc(MaskFiltstr_enc *maskdata) { 24 25 int k; 26 27 for (k = 0; k < WINLEN; k++) { 28 maskdata->DataBufferLoQ0[k] = (int16_t) 0; 29 maskdata->DataBufferHiQ0[k] = (int16_t) 0; 30 } 31 for (k = 0; k < ORDERLO+1; k++) { 32 maskdata->CorrBufLoQQ[k] = (int32_t) 0; 33 maskdata->CorrBufLoQdom[k] = 0; 34 35 maskdata->PreStateLoGQ15[k] = 0; 36 37 } 38 for (k = 0; k < ORDERHI+1; k++) { 39 maskdata->CorrBufHiQQ[k] = (int32_t) 0; 40 maskdata->CorrBufHiQdom[k] = 0; 41 maskdata->PreStateHiGQ15[k] = 0; 42 } 43 44 maskdata->OldEnergy = 10; 45 46 return; 47 } 48 49 void WebRtcIsacfix_InitMaskingDec(MaskFiltstr_dec *maskdata) { 50 51 int k; 52 53 for (k = 0; k < ORDERLO+1; k++) 54 { 55 maskdata->PostStateLoGQ0[k] = 0; 56 } 57 for (k = 0; k < ORDERHI+1; k++) 58 { 59 maskdata->PostStateHiGQ0[k] = 0; 60 } 61 62 maskdata->OldEnergy = 10; 63 64 return; 65 } 66 67 68 69 70 71 72 73 void WebRtcIsacfix_InitPreFilterbank(PreFiltBankstr *prefiltdata) 74 { 75 int k; 76 77 for (k = 0; k < QLOOKAHEAD; k++) { 78 prefiltdata->INLABUF1_fix[k] = 0; 79 prefiltdata->INLABUF2_fix[k] = 0; 80 } 81 for (k = 0; k < 2 * (QORDER - 1); k++) { 82 prefiltdata->INSTAT1_fix[k] = 0; 83 prefiltdata->INSTAT2_fix[k] = 0; 84 } 85 86 /* High pass filter states */ 87 prefiltdata->HPstates_fix[0] = 0; 88 prefiltdata->HPstates_fix[1] = 0; 89 90 return; 91 } 92 93 void WebRtcIsacfix_InitPostFilterbank(PostFiltBankstr *postfiltdata) 94 { 95 int k; 96 97 for (k = 0; k < 2 * POSTQORDER; k++) { 98 postfiltdata->STATE_0_LOWER_fix[k] = 0; 99 postfiltdata->STATE_0_UPPER_fix[k] = 0; 100 } 101 102 /* High pass filter states */ 103 104 postfiltdata->HPstates1_fix[0] = 0; 105 postfiltdata->HPstates1_fix[1] = 0; 106 107 postfiltdata->HPstates2_fix[0] = 0; 108 postfiltdata->HPstates2_fix[1] = 0; 109 110 return; 111 } 112 113 114 void WebRtcIsacfix_InitPitchFilter(PitchFiltstr *pitchfiltdata) 115 { 116 int k; 117 118 for (k = 0; k < PITCH_BUFFSIZE; k++) 119 pitchfiltdata->ubufQQ[k] = 0; 120 for (k = 0; k < (PITCH_DAMPORDER); k++) 121 pitchfiltdata->ystateQQ[k] = 0; 122 123 pitchfiltdata->oldlagQ7 = 6400; /* 50.0 in Q7 */ 124 pitchfiltdata->oldgainQ12 = 0; 125 } 126 127 void WebRtcIsacfix_InitPitchAnalysis(PitchAnalysisStruct *State) 128 { 129 int k; 130 131 for (k = 0; k < PITCH_CORR_LEN2+PITCH_CORR_STEP2+PITCH_MAX_LAG/2-PITCH_FRAME_LEN/2+2; k++) { 132 State->dec_buffer16[k] = 0; 133 } 134 for (k = 0; k < 2 * ALLPASSSECTIONS + 1; k++) { 135 State->decimator_state32[k] = 0; 136 } 137 138 for (k = 0; k < QLOOKAHEAD; k++) 139 State->inbuf[k] = 0; 140 141 WebRtcIsacfix_InitPitchFilter(&(State->PFstr_wght)); 142 143 WebRtcIsacfix_InitPitchFilter(&(State->PFstr)); 144 } 145 146 147 void WebRtcIsacfix_InitPlc( PLCstr *State ) 148 { 149 State->decayCoeffPriodic = WEBRTC_SPL_WORD16_MAX; 150 State->decayCoeffNoise = WEBRTC_SPL_WORD16_MAX; 151 152 State->used = PLC_WAS_USED; 153 154 WebRtcSpl_ZerosArrayW16(State->overlapLP, RECOVERY_OVERLAP); 155 WebRtcSpl_ZerosArrayW16(State->lofilt_coefQ15, ORDERLO); 156 WebRtcSpl_ZerosArrayW16(State->hifilt_coefQ15, ORDERHI ); 157 158 State->AvgPitchGain_Q12 = 0; 159 State->lastPitchGain_Q12 = 0; 160 State->lastPitchLag_Q7 = 0; 161 State->gain_lo_hiQ17[0]=State->gain_lo_hiQ17[1] = 0; 162 WebRtcSpl_ZerosArrayW16(State->prevPitchInvIn, FRAMESAMPLES/2); 163 WebRtcSpl_ZerosArrayW16(State->prevPitchInvOut, PITCH_MAX_LAG + 10 ); 164 WebRtcSpl_ZerosArrayW32(State->prevHP, PITCH_MAX_LAG + 10 ); 165 State->pitchCycles = 0; 166 State->A = 0; 167 State->B = 0; 168 State->pitchIndex = 0; 169 State->stretchLag = 240; 170 State->seed = 4447; 171 172 173 } 174
