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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}
62 lines
2.4 KiB
C
62 lines
2.4 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_LpcEncode.c
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******************************************************************/
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#include "modules/audio_coding/codecs/ilbc/lpc_encode.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/lsf_check.h"
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#include "modules/audio_coding/codecs/ilbc/simple_interpolate_lsf.h"
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#include "modules/audio_coding/codecs/ilbc/simple_lpc_analysis.h"
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#include "modules/audio_coding/codecs/ilbc/simple_lsf_quant.h"
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/*----------------------------------------------------------------*
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* lpc encoder
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*---------------------------------------------------------------*/
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void WebRtcIlbcfix_LpcEncode(
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int16_t *syntdenum, /* (i/o) synthesis filter coefficients
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before/after encoding */
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int16_t *weightdenum, /* (i/o) weighting denumerator coefficients
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before/after encoding */
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int16_t *lsf_index, /* (o) lsf quantization index */
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int16_t *data, /* (i) Speech to do LPC analysis on */
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IlbcEncoder *iLBCenc_inst
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/* (i/o) the encoder state structure */
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) {
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/* Stack based */
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int16_t lsf[LPC_FILTERORDER * LPC_N_MAX];
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int16_t lsfdeq[LPC_FILTERORDER * LPC_N_MAX];
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/* Calculate LSF's from the input speech */
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WebRtcIlbcfix_SimpleLpcAnalysis(lsf, data, iLBCenc_inst);
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/* Quantize the LSF's */
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WebRtcIlbcfix_SimpleLsfQ(lsfdeq, lsf_index, lsf, iLBCenc_inst->lpc_n);
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/* Stableize the LSF's if needed */
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WebRtcIlbcfix_LsfCheck(lsfdeq, LPC_FILTERORDER, iLBCenc_inst->lpc_n);
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/* Calculate the synthesis and weighting filter coefficients from
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the optimal LSF and the dequantized LSF */
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WebRtcIlbcfix_SimpleInterpolateLsf(syntdenum, weightdenum,
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lsf, lsfdeq, iLBCenc_inst->lsfold,
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iLBCenc_inst->lsfdeqold, LPC_FILTERORDER, iLBCenc_inst);
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return;
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}
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