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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}
87 lines
2.6 KiB
C
87 lines
2.6 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_AbsQuantLoop.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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#include "modules/audio_coding/codecs/ilbc/sort_sq.h"
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void WebRtcIlbcfix_AbsQuantLoop(int16_t *syntOutIN, int16_t *in_weightedIN,
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int16_t *weightDenumIN, size_t *quantLenIN,
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int16_t *idxVecIN ) {
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size_t k1, k2;
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int16_t index;
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int32_t toQW32;
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int32_t toQ32;
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int16_t tmp16a;
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int16_t xq;
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int16_t *syntOut = syntOutIN;
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int16_t *in_weighted = in_weightedIN;
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int16_t *weightDenum = weightDenumIN;
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size_t *quantLen = quantLenIN;
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int16_t *idxVec = idxVecIN;
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for(k1=0;k1<2;k1++) {
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for(k2=0;k2<quantLen[k1];k2++){
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/* Filter to get the predicted value */
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WebRtcSpl_FilterARFastQ12(
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syntOut, syntOut,
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weightDenum, LPC_FILTERORDER+1, 1);
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/* the quantizer */
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toQW32 = (int32_t)(*in_weighted) - (int32_t)(*syntOut);
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toQ32 = (((int32_t)toQW32)<<2);
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if (toQ32 > 32767) {
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toQ32 = (int32_t) 32767;
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} else if (toQ32 < -32768) {
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toQ32 = (int32_t) -32768;
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}
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/* Quantize the state */
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if (toQW32<(-7577)) {
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/* To prevent negative overflow */
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index=0;
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} else if (toQW32>8151) {
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/* To prevent positive overflow */
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index=7;
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} else {
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/* Find the best quantization index
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(state_sq3Tbl is in Q13 and toQ is in Q11)
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*/
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WebRtcIlbcfix_SortSq(&xq, &index,
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(int16_t)toQ32,
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WebRtcIlbcfix_kStateSq3, 8);
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}
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/* Store selected index */
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(*idxVec++) = index;
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/* Compute decoded sample and update of the prediction filter */
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tmp16a = ((WebRtcIlbcfix_kStateSq3[index] + 2 ) >> 2);
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*syntOut = (int16_t) (tmp16a + (int32_t)(*in_weighted) - toQW32);
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syntOut++; in_weighted++;
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}
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/* Update perceptual weighting filter at subframe border */
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weightDenum += 11;
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}
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}
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