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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}
71 lines
2.5 KiB
C
71 lines
2.5 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_CbConstruct.c
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******************************************************************/
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#include "modules/audio_coding/codecs/ilbc/cb_construct.h"
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#include "modules/audio_coding/codecs/ilbc/defines.h"
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#include "modules/audio_coding/codecs/ilbc/gain_dequant.h"
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#include "modules/audio_coding/codecs/ilbc/get_cd_vec.h"
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/*----------------------------------------------------------------*
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* Construct decoded vector from codebook and gains.
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*---------------------------------------------------------------*/
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bool WebRtcIlbcfix_CbConstruct(
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int16_t* decvector, /* (o) Decoded vector */
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const int16_t* index, /* (i) Codebook indices */
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const int16_t* gain_index, /* (i) Gain quantization indices */
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int16_t* mem, /* (i) Buffer for codevector construction */
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size_t lMem, /* (i) Length of buffer */
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size_t veclen) { /* (i) Length of vector */
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size_t j;
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int16_t gain[CB_NSTAGES];
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/* Stack based */
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int16_t cbvec0[SUBL];
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int16_t cbvec1[SUBL];
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int16_t cbvec2[SUBL];
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int32_t a32;
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int16_t *gainPtr;
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/* gain de-quantization */
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gain[0] = WebRtcIlbcfix_GainDequant(gain_index[0], 16384, 0);
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gain[1] = WebRtcIlbcfix_GainDequant(gain_index[1], gain[0], 1);
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gain[2] = WebRtcIlbcfix_GainDequant(gain_index[2], gain[1], 2);
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/* codebook vector construction and construction of total vector */
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/* Stack based */
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if (!WebRtcIlbcfix_GetCbVec(cbvec0, mem, (size_t)index[0], lMem, veclen))
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return false; // Failure.
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if (!WebRtcIlbcfix_GetCbVec(cbvec1, mem, (size_t)index[1], lMem, veclen))
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return false; // Failure.
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if (!WebRtcIlbcfix_GetCbVec(cbvec2, mem, (size_t)index[2], lMem, veclen))
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return false; // Failure.
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gainPtr = &gain[0];
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for (j=0;j<veclen;j++) {
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a32 = (*gainPtr++) * cbvec0[j];
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a32 += (*gainPtr++) * cbvec1[j];
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a32 += (*gainPtr) * cbvec2[j];
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gainPtr -= 2;
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decvector[j] = (int16_t)((a32 + 8192) >> 14);
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}
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return true; // Success.
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}
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