f7fa6276e2
This CL format the ramaining files on the audio coding module. No other changes are done, except for fixing a few long lines and TODOs without owner. BUG=issue1024 Review URL: https://webrtc-codereview.appspot.com/928012 git-svn-id: http://webrtc.googlecode.com/svn/trunk@3042 4adac7df-926f-26a2-2b94-8c16560cd09d
131 lines
3.8 KiB
C++
131 lines
3.8 KiB
C++
/*
|
|
* Copyright (c) 2012 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.
|
|
*/
|
|
|
|
#include "acm_pcma.h"
|
|
|
|
#include "acm_common_defs.h"
|
|
#include "acm_neteq.h"
|
|
#include "trace.h"
|
|
#include "webrtc_neteq.h"
|
|
#include "webrtc_neteq_help_macros.h"
|
|
|
|
// Codec interface
|
|
#include "g711_interface.h"
|
|
|
|
namespace webrtc {
|
|
|
|
ACMPCMA::ACMPCMA(WebRtc_Word16 codecID) {
|
|
_codecID = codecID;
|
|
}
|
|
|
|
ACMPCMA::~ACMPCMA() {
|
|
return;
|
|
}
|
|
|
|
WebRtc_Word16 ACMPCMA::InternalEncode(WebRtc_UWord8* bitStream,
|
|
WebRtc_Word16* bitStreamLenByte) {
|
|
*bitStreamLenByte = WebRtcG711_EncodeA(NULL, &_inAudio[_inAudioIxRead],
|
|
_frameLenSmpl * _noChannels,
|
|
(WebRtc_Word16*) bitStream);
|
|
// Increment the read index this tell the caller that how far
|
|
// we have gone forward in reading the audio buffer.
|
|
_inAudioIxRead += _frameLenSmpl * _noChannels;
|
|
return *bitStreamLenByte;
|
|
}
|
|
|
|
WebRtc_Word16 ACMPCMA::DecodeSafe(WebRtc_UWord8* /* bitStream */,
|
|
WebRtc_Word16 /* bitStreamLenByte */,
|
|
WebRtc_Word16* /* audio */,
|
|
WebRtc_Word16* /* audioSamples */,
|
|
WebRtc_Word8* /* speechType */) {
|
|
return 0;
|
|
}
|
|
|
|
WebRtc_Word16 ACMPCMA::InternalInitEncoder(
|
|
WebRtcACMCodecParams* /* codecParams */) {
|
|
// This codec does not need initialization, PCM has no instance.
|
|
return 0;
|
|
}
|
|
|
|
WebRtc_Word16 ACMPCMA::InternalInitDecoder(
|
|
WebRtcACMCodecParams* /* codecParams */) {
|
|
// This codec does not need initialization, PCM has no instance.
|
|
return 0;
|
|
}
|
|
|
|
WebRtc_Word32 ACMPCMA::CodecDef(WebRtcNetEQ_CodecDef& codecDef,
|
|
const CodecInst& codecInst) {
|
|
// Fill up the structure by calling
|
|
// "SET_CODEC_PAR" & "SET_PCMA_FUNCTION."
|
|
// Then call NetEQ to add the codec to it's database.
|
|
if (codecInst.channels == 1) {
|
|
// Mono mode.
|
|
SET_CODEC_PAR(codecDef, kDecoderPCMa, codecInst.pltype, NULL, 8000);
|
|
} else {
|
|
// Stereo mode.
|
|
SET_CODEC_PAR(codecDef, kDecoderPCMa_2ch, codecInst.pltype, NULL, 8000);
|
|
}
|
|
SET_PCMA_FUNCTIONS(codecDef);
|
|
return 0;
|
|
}
|
|
|
|
ACMGenericCodec* ACMPCMA::CreateInstance(void) {
|
|
return NULL;
|
|
}
|
|
|
|
WebRtc_Word16 ACMPCMA::InternalCreateEncoder() {
|
|
// PCM has no instance.
|
|
return 0;
|
|
}
|
|
|
|
WebRtc_Word16 ACMPCMA::InternalCreateDecoder() {
|
|
// PCM has no instance.
|
|
return 0;
|
|
}
|
|
|
|
void ACMPCMA::InternalDestructEncoderInst(void* /* ptrInst */) {
|
|
// PCM has no instance.
|
|
return;
|
|
}
|
|
|
|
void ACMPCMA::DestructEncoderSafe() {
|
|
// PCM has no instance.
|
|
return;
|
|
}
|
|
|
|
void ACMPCMA::DestructDecoderSafe() {
|
|
// PCM has no instance.
|
|
_decoderInitialized = false;
|
|
_decoderExist = false;
|
|
return;
|
|
}
|
|
|
|
// Split the stereo packet and place left and right channel after each other
|
|
// in the payload vector.
|
|
void ACMPCMA::SplitStereoPacket(uint8_t* payload, int32_t* payload_length) {
|
|
uint8_t right_byte;
|
|
|
|
// Check for valid inputs.
|
|
assert(payload != NULL);
|
|
assert(*payload_length > 0);
|
|
|
|
// Move one bytes representing right channel each loop, and place it at the
|
|
// end of the bytestream vector. After looping the data is reordered to:
|
|
// l1 l2 l3 l4 ... l(N-1) lN r1 r2 r3 r4 ... r(N-1) r(N),
|
|
// where N is the total number of samples.
|
|
for (int i = 0; i < *payload_length / 2; i++) {
|
|
right_byte = payload[i + 1];
|
|
memmove(&payload[i + 1], &payload[i + 2], *payload_length - i - 2);
|
|
payload[*payload_length - 1] = right_byte;
|
|
}
|
|
}
|
|
|
|
} // namespace webrtc
|