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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}
47 lines
1.6 KiB
C
47 lines
1.6 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_GainDequant.c
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******************************************************************/
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#include "modules/audio_coding/codecs/ilbc/gain_dequant.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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/*----------------------------------------------------------------*
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* decoder for quantized gains in the gain-shape coding of
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* residual
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*---------------------------------------------------------------*/
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int16_t WebRtcIlbcfix_GainDequant(
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/* (o) quantized gain value (Q14) */
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int16_t index, /* (i) quantization index */
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int16_t maxIn, /* (i) maximum of unquantized gain (Q14) */
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int16_t stage /* (i) The stage of the search */
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){
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int16_t scale;
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const int16_t *gain;
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/* obtain correct scale factor */
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scale=WEBRTC_SPL_ABS_W16(maxIn);
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scale = WEBRTC_SPL_MAX(1638, scale); /* if lower than 0.1, set it to 0.1 */
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/* select the quantization table and return the decoded value */
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gain = WebRtcIlbcfix_kGain[stage];
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return (int16_t)((scale * gain[index] + 8192) >> 14);
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}
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