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3111783aa1
Prior to this commit, most .c files in modules/audio_coding/codecs/ilbc don't include their corresponding headers, nor do they order #includes as per the Google Style Guide [1]. The former is especially harmful, since in C it can silently allow the function signature to diverge from its prototype, thus causing disaster at runtime. This CL fixes both issues. In effect, this allows the common_audio and modules/audio_coding:ilbc targets to be compiled with Clang's -Wmissing-prototypes, though this CL does not add that change. [1]: https://google.github.io/styleguide/cppguide.html#Names_and_Order_of_Includes Bug: webrtc:12314 Change-Id: I8299968ed3cc86ff35d9de045072b846298043af Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/198362 Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org> Commit-Queue: Timothy Gu <timothygu@chromium.org> Cr-Commit-Position: refs/heads/master@{#32896}
89 lines
2.6 KiB
C
89 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/abs_quant_loop.h"
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#include "modules/audio_coding/codecs/ilbc/constants.h"
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#include "modules/audio_coding/codecs/ilbc/defines.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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