1/*
2 *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#include "webrtc/modules/audio_coding/codecs/g711/audio_decoder_pcm.h"
12
13#include "webrtc/modules/audio_coding/codecs/g711/g711_interface.h"
14
15namespace webrtc {
16
17void AudioDecoderPcmU::Reset() {}
18
19size_t AudioDecoderPcmU::Channels() const {
20  return num_channels_;
21}
22
23int AudioDecoderPcmU::DecodeInternal(const uint8_t* encoded,
24                                     size_t encoded_len,
25                                     int sample_rate_hz,
26                                     int16_t* decoded,
27                                     SpeechType* speech_type) {
28  RTC_DCHECK_EQ(sample_rate_hz, 8000);
29  int16_t temp_type = 1;  // Default is speech.
30  size_t ret = WebRtcG711_DecodeU(encoded, encoded_len, decoded, &temp_type);
31  *speech_type = ConvertSpeechType(temp_type);
32  return static_cast<int>(ret);
33}
34
35int AudioDecoderPcmU::PacketDuration(const uint8_t* encoded,
36                                     size_t encoded_len) const {
37  // One encoded byte per sample per channel.
38  return static_cast<int>(encoded_len / Channels());
39}
40
41void AudioDecoderPcmA::Reset() {}
42
43size_t AudioDecoderPcmA::Channels() const {
44  return num_channels_;
45}
46
47int AudioDecoderPcmA::DecodeInternal(const uint8_t* encoded,
48                                     size_t encoded_len,
49                                     int sample_rate_hz,
50                                     int16_t* decoded,
51                                     SpeechType* speech_type) {
52  RTC_DCHECK_EQ(sample_rate_hz, 8000);
53  int16_t temp_type = 1;  // Default is speech.
54  size_t ret = WebRtcG711_DecodeA(encoded, encoded_len, decoded, &temp_type);
55  *speech_type = ConvertSpeechType(temp_type);
56  return static_cast<int>(ret);
57}
58
59int AudioDecoderPcmA::PacketDuration(const uint8_t* encoded,
60                                     size_t encoded_len) const {
61  // One encoded byte per sample per channel.
62  return static_cast<int>(encoded_len / Channels());
63}
64
65}  // namespace webrtc
66