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06c2aa9f7b
WebRTC internal code should always use include paths that start from the root of the project and that clearly identify the header file. This allows 'gn check' to actually keep dependencies under control because 'gn check' cannot enforce anything if the include path is not fully qualified (starting from the root of the project). Bug: webrtc:8815 Change-Id: I36f01784fa5f5b77eefc02db479b1f7f6ee1a8c3 Reviewed-on: https://webrtc-review.googlesource.com/46263 Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#21871}
96 lines
3.3 KiB
C
96 lines
3.3 KiB
C
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/******************************************************************
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iLBC Speech Coder ANSI-C Source Code
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WebRtcIlbcfix_InitDecode.c
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******************************************************************/
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#include "modules/audio_coding/codecs/ilbc/defines.h"
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#include "modules/audio_coding/codecs/ilbc/constants.h"
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/*----------------------------------------------------------------*
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* Initiation of decoder instance.
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*---------------------------------------------------------------*/
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int WebRtcIlbcfix_InitDecode( /* (o) Number of decoded samples */
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IlbcDecoder *iLBCdec_inst, /* (i/o) Decoder instance */
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int16_t mode, /* (i) frame size mode */
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int use_enhancer) { /* (i) 1: use enhancer, 0: no enhancer */
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int i;
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iLBCdec_inst->mode = mode;
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/* Set all the variables that are dependent on the frame size mode */
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if (mode==30) {
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iLBCdec_inst->blockl = BLOCKL_30MS;
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iLBCdec_inst->nsub = NSUB_30MS;
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iLBCdec_inst->nasub = NASUB_30MS;
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iLBCdec_inst->lpc_n = LPC_N_30MS;
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iLBCdec_inst->no_of_bytes = NO_OF_BYTES_30MS;
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iLBCdec_inst->no_of_words = NO_OF_WORDS_30MS;
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iLBCdec_inst->state_short_len=STATE_SHORT_LEN_30MS;
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}
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else if (mode==20) {
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iLBCdec_inst->blockl = BLOCKL_20MS;
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iLBCdec_inst->nsub = NSUB_20MS;
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iLBCdec_inst->nasub = NASUB_20MS;
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iLBCdec_inst->lpc_n = LPC_N_20MS;
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iLBCdec_inst->no_of_bytes = NO_OF_BYTES_20MS;
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iLBCdec_inst->no_of_words = NO_OF_WORDS_20MS;
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iLBCdec_inst->state_short_len=STATE_SHORT_LEN_20MS;
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}
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else {
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return(-1);
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}
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/* Reset all the previous LSF to mean LSF */
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WEBRTC_SPL_MEMCPY_W16(iLBCdec_inst->lsfdeqold, WebRtcIlbcfix_kLsfMean, LPC_FILTERORDER);
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/* Clear the synthesis filter memory */
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WebRtcSpl_MemSetW16(iLBCdec_inst->syntMem, 0, LPC_FILTERORDER);
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/* Set the old synthesis filter to {1.0 0.0 ... 0.0} */
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WebRtcSpl_MemSetW16(iLBCdec_inst->old_syntdenum, 0, ((LPC_FILTERORDER + 1)*NSUB_MAX));
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for (i=0; i<NSUB_MAX; i++) {
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iLBCdec_inst->old_syntdenum[i*(LPC_FILTERORDER+1)] = 4096;
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}
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/* Clear the variables that are used for the PLC */
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iLBCdec_inst->last_lag = 20;
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iLBCdec_inst->consPLICount = 0;
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iLBCdec_inst->prevPLI = 0;
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iLBCdec_inst->perSquare = 0;
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iLBCdec_inst->prevLag = 120;
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iLBCdec_inst->prevLpc[0] = 4096;
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WebRtcSpl_MemSetW16(iLBCdec_inst->prevLpc+1, 0, LPC_FILTERORDER);
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WebRtcSpl_MemSetW16(iLBCdec_inst->prevResidual, 0, BLOCKL_MAX);
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/* Initialize the seed for the random number generator */
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iLBCdec_inst->seed = 777;
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/* Set the filter state of the HP filter to 0 */
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WebRtcSpl_MemSetW16(iLBCdec_inst->hpimemx, 0, 2);
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WebRtcSpl_MemSetW16(iLBCdec_inst->hpimemy, 0, 4);
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/* Set the variables that are used in the ehnahcer */
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iLBCdec_inst->use_enhancer = use_enhancer;
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WebRtcSpl_MemSetW16(iLBCdec_inst->enh_buf, 0, (ENH_BUFL+ENH_BUFL_FILTEROVERHEAD));
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for (i=0;i<ENH_NBLOCKS_TOT;i++) {
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iLBCdec_inst->enh_period[i]=160; /* Q(-4) */
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}
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iLBCdec_inst->prev_enh_pl = 0;
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return (int)(iLBCdec_inst->blockl);
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}
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