webrtc/modules/audio_coding/codecs/ilbc/index_conv_dec.c
Timothy Gu 3111783aa1 Organize iLBC headers as per style guide
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}
2020-12-31 20:57:18 +00:00

40 lines
1.2 KiB
C

/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/******************************************************************
iLBC Speech Coder ANSI-C Source Code
WebRtcIlbcfix_IndexConvDec.c
******************************************************************/
#include "modules/audio_coding/codecs/ilbc/index_conv_dec.h"
#include "modules/audio_coding/codecs/ilbc/defines.h"
void WebRtcIlbcfix_IndexConvDec(
int16_t *index /* (i/o) Codebook indexes */
){
int k;
for (k=4;k<6;k++) {
/* Readjust the second and third codebook index for the first 40 sample
so that they look the same as the first (in terms of lag)
*/
if ((index[k]>=44)&&(index[k]<108)) {
index[k]+=64;
} else if ((index[k]>=108)&&(index[k]<128)) {
index[k]+=128;
} else {
/* ERROR */
}
}
}