git-svn-id: http://webrtc.googlecode.com/svn/trunk@4 4adac7df-926f-26a2-2b94-8c16560cd09d

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;
+
+
+}