1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/*
* 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 "webrtc/modules/audio_coding/main/acm2/acm_pcma.h"
#include "webrtc/modules/audio_coding/codecs/g711/include/g711_interface.h"
#include "webrtc/modules/audio_coding/main/acm2/acm_common_defs.h"
#include "webrtc/system_wrappers/interface/trace.h"
// Codec interface
namespace webrtc {
namespace acm2 {
ACMPCMA::ACMPCMA(int16_t codec_id) { codec_id_ = codec_id; }
ACMPCMA::~ACMPCMA() { return; }
int16_t ACMPCMA::InternalEncode(uint8_t* bitstream,
int16_t* bitstream_len_byte) {
*bitstream_len_byte = WebRtcG711_EncodeA(
&in_audio_[in_audio_ix_read_], frame_len_smpl_ * num_channels_,
reinterpret_cast<int16_t*>(bitstream));
// Increment the read index this tell the caller that how far
// we have gone forward in reading the audio buffer.
in_audio_ix_read_ += frame_len_smpl_ * num_channels_;
return *bitstream_len_byte;
}
int16_t ACMPCMA::InternalInitEncoder(WebRtcACMCodecParams* /* codec_params */) {
// This codec does not need initialization, PCM has no instance.
return 0;
}
ACMGenericCodec* ACMPCMA::CreateInstance(void) { return NULL; }
int16_t ACMPCMA::InternalCreateEncoder() {
// PCM has no instance.
return 0;
}
void ACMPCMA::DestructEncoderSafe() {
// PCM has no instance.
return;
}
} // namespace acm2
} // namespace webrtc
|
