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1 /* | 1 /* |
2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #include "webrtc/modules/audio_coding/codecs/ilbc/audio_decoder_ilbc.h" | 11 #include "webrtc/modules/audio_coding/codecs/ilbc/audio_decoder_ilbc.h" |
12 | 12 |
13 #include "webrtc/base/checks.h" | 13 #include "webrtc/base/checks.h" |
| 14 #include "webrtc/base/logging.h" |
14 #include "webrtc/modules/audio_coding/codecs/ilbc/ilbc.h" | 15 #include "webrtc/modules/audio_coding/codecs/ilbc/ilbc.h" |
| 16 #include "webrtc/modules/audio_coding/codecs/legacy_encoded_audio_frame.h" |
15 | 17 |
16 namespace webrtc { | 18 namespace webrtc { |
17 | 19 |
18 AudioDecoderIlbc::AudioDecoderIlbc() { | 20 AudioDecoderIlbc::AudioDecoderIlbc() { |
19 WebRtcIlbcfix_DecoderCreate(&dec_state_); | 21 WebRtcIlbcfix_DecoderCreate(&dec_state_); |
20 WebRtcIlbcfix_Decoderinit30Ms(dec_state_); | 22 WebRtcIlbcfix_Decoderinit30Ms(dec_state_); |
21 } | 23 } |
22 | 24 |
23 AudioDecoderIlbc::~AudioDecoderIlbc() { | 25 AudioDecoderIlbc::~AudioDecoderIlbc() { |
24 WebRtcIlbcfix_DecoderFree(dec_state_); | 26 WebRtcIlbcfix_DecoderFree(dec_state_); |
(...skipping 17 matching lines...) Expand all Loading... |
42 } | 44 } |
43 | 45 |
44 size_t AudioDecoderIlbc::DecodePlc(size_t num_frames, int16_t* decoded) { | 46 size_t AudioDecoderIlbc::DecodePlc(size_t num_frames, int16_t* decoded) { |
45 return WebRtcIlbcfix_NetEqPlc(dec_state_, decoded, num_frames); | 47 return WebRtcIlbcfix_NetEqPlc(dec_state_, decoded, num_frames); |
46 } | 48 } |
47 | 49 |
48 void AudioDecoderIlbc::Reset() { | 50 void AudioDecoderIlbc::Reset() { |
49 WebRtcIlbcfix_Decoderinit30Ms(dec_state_); | 51 WebRtcIlbcfix_Decoderinit30Ms(dec_state_); |
50 } | 52 } |
51 | 53 |
| 54 std::vector<AudioDecoder::ParseResult> AudioDecoderIlbc::ParsePayload( |
| 55 rtc::Buffer&& payload, |
| 56 uint32_t timestamp, |
| 57 bool is_primary) { |
| 58 std::vector<ParseResult> results; |
| 59 size_t bytes_per_frame; |
| 60 int timestamps_per_frame; |
| 61 if (payload.size() >= 950) { |
| 62 LOG(LS_WARNING) << "AudioDecoderIlbc::ParsePayload: Payload too large"; |
| 63 return results; |
| 64 } |
| 65 if (payload.size() % 38 == 0) { |
| 66 // 20 ms frames. |
| 67 bytes_per_frame = 38; |
| 68 timestamps_per_frame = 160; |
| 69 } else if (payload.size() % 50 == 0) { |
| 70 // 30 ms frames. |
| 71 bytes_per_frame = 50; |
| 72 timestamps_per_frame = 240; |
| 73 } else { |
| 74 LOG(LS_WARNING) << "AudioDecoderIlbc::ParsePayload: Invalid payload"; |
| 75 return results; |
| 76 } |
| 77 |
| 78 RTC_DCHECK_EQ(0u, payload.size() % bytes_per_frame); |
| 79 if (payload.size() == bytes_per_frame) { |
| 80 std::unique_ptr<EncodedAudioFrame> frame( |
| 81 new LegacyEncodedAudioFrame(this, std::move(payload), is_primary)); |
| 82 results.emplace_back(timestamp, is_primary, std::move(frame)); |
| 83 } else { |
| 84 size_t byte_offset; |
| 85 uint32_t timestamp_offset; |
| 86 for (byte_offset = 0, timestamp_offset = 0; |
| 87 byte_offset < payload.size(); |
| 88 byte_offset += bytes_per_frame, |
| 89 timestamp_offset += timestamps_per_frame) { |
| 90 rtc::Buffer new_payload(payload.data() + byte_offset, bytes_per_frame); |
| 91 std::unique_ptr<EncodedAudioFrame> frame(new LegacyEncodedAudioFrame( |
| 92 this, std::move(new_payload), is_primary)); |
| 93 results.emplace_back(timestamp + timestamp_offset, is_primary, |
| 94 std::move(frame)); |
| 95 } |
| 96 } |
| 97 |
| 98 return results; |
| 99 } |
| 100 |
52 int AudioDecoderIlbc::SampleRateHz() const { | 101 int AudioDecoderIlbc::SampleRateHz() const { |
53 return 8000; | 102 return 8000; |
54 } | 103 } |
55 | 104 |
56 size_t AudioDecoderIlbc::Channels() const { | 105 size_t AudioDecoderIlbc::Channels() const { |
57 return 1; | 106 return 1; |
58 } | 107 } |
59 | 108 |
60 } // namespace webrtc | 109 } // namespace webrtc |
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