mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-14 06:10:40 +01:00
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}
69 lines
2.4 KiB
C
69 lines
2.4 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_CbMemEnergyAugmentation.c
|
|
|
|
******************************************************************/
|
|
|
|
#include "modules/audio_coding/codecs/ilbc/cb_mem_energy_augmentation.h"
|
|
|
|
#include "modules/audio_coding/codecs/ilbc/constants.h"
|
|
#include "modules/audio_coding/codecs/ilbc/defines.h"
|
|
|
|
void WebRtcIlbcfix_CbMemEnergyAugmentation(
|
|
int16_t *interpSamples, /* (i) The interpolated samples */
|
|
int16_t *CBmem, /* (i) The CB memory */
|
|
int scale, /* (i) The scaling of all energy values */
|
|
size_t base_size, /* (i) Index to where energy values should be stored */
|
|
int16_t *energyW16, /* (o) Energy in the CB vectors */
|
|
int16_t *energyShifts /* (o) Shift value of the energy */
|
|
){
|
|
int32_t energy, tmp32;
|
|
int16_t *ppe, *pp, *interpSamplesPtr;
|
|
int16_t *CBmemPtr;
|
|
size_t lagcount;
|
|
int16_t *enPtr=&energyW16[base_size-20];
|
|
int16_t *enShPtr=&energyShifts[base_size-20];
|
|
int32_t nrjRecursive;
|
|
|
|
CBmemPtr = CBmem+147;
|
|
interpSamplesPtr = interpSamples;
|
|
|
|
/* Compute the energy for the first (low-5) noninterpolated samples */
|
|
nrjRecursive = WebRtcSpl_DotProductWithScale( CBmemPtr-19, CBmemPtr-19, 15, scale);
|
|
ppe = CBmemPtr - 20;
|
|
|
|
for (lagcount=20; lagcount<=39; lagcount++) {
|
|
|
|
/* Update the energy recursively to save complexity */
|
|
nrjRecursive += (*ppe * *ppe) >> scale;
|
|
ppe--;
|
|
energy = nrjRecursive;
|
|
|
|
/* interpolation */
|
|
energy += WebRtcSpl_DotProductWithScale(interpSamplesPtr, interpSamplesPtr, 4, scale);
|
|
interpSamplesPtr += 4;
|
|
|
|
/* Compute energy for the remaining samples */
|
|
pp = CBmemPtr - lagcount;
|
|
energy += WebRtcSpl_DotProductWithScale(pp, pp, SUBL-lagcount, scale);
|
|
|
|
/* Normalize the energy and store the number of shifts */
|
|
(*enShPtr) = (int16_t)WebRtcSpl_NormW32(energy);
|
|
tmp32 = energy << *enShPtr;
|
|
*enPtr = (int16_t)(tmp32 >> 16);
|
|
enShPtr++;
|
|
enPtr++;
|
|
}
|
|
}
|