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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" |
15 | 16 |
16 namespace webrtc { | 17 namespace webrtc { |
17 | 18 |
18 AudioDecoderIlbc::AudioDecoderIlbc() { | 19 AudioDecoderIlbc::AudioDecoderIlbc() { |
19 WebRtcIlbcfix_DecoderCreate(&dec_state_); | 20 WebRtcIlbcfix_DecoderCreate(&dec_state_); |
20 WebRtcIlbcfix_Decoderinit30Ms(dec_state_); | 21 WebRtcIlbcfix_Decoderinit30Ms(dec_state_); |
21 } | 22 } |
22 | 23 |
23 AudioDecoderIlbc::~AudioDecoderIlbc() { | 24 AudioDecoderIlbc::~AudioDecoderIlbc() { |
(...skipping 18 matching lines...) Expand all Loading... | |
42 } | 43 } |
43 | 44 |
44 size_t AudioDecoderIlbc::DecodePlc(size_t num_frames, int16_t* decoded) { | 45 size_t AudioDecoderIlbc::DecodePlc(size_t num_frames, int16_t* decoded) { |
45 return WebRtcIlbcfix_NetEqPlc(dec_state_, decoded, num_frames); | 46 return WebRtcIlbcfix_NetEqPlc(dec_state_, decoded, num_frames); |
46 } | 47 } |
47 | 48 |
48 void AudioDecoderIlbc::Reset() { | 49 void AudioDecoderIlbc::Reset() { |
49 WebRtcIlbcfix_Decoderinit30Ms(dec_state_); | 50 WebRtcIlbcfix_Decoderinit30Ms(dec_state_); |
50 } | 51 } |
51 | 52 |
53 AudioDecoder::PacketSplits AudioDecoderIlbc::SplitPacket( | |
54 const uint8_t* payload, | |
55 size_t payload_len) const { | |
56 PacketSplits splits; | |
57 size_t bytes_per_frame; | |
58 int timestamps_per_frame; | |
59 if (payload_len >= 950) { | |
kwiberg-webrtc
2016/08/26 12:39:25
It's probably best to name the constants:
const
| |
60 LOG(LS_WARNING) << "AudioDecoderIlbc::SplitPacket: Payload too large"; | |
61 return splits; | |
62 } | |
63 if (payload_len % 38 == 0) { | |
64 // 20 ms frames. | |
65 bytes_per_frame = 38; | |
66 timestamps_per_frame = 160; | |
67 } else if (payload_len % 50 == 0) { | |
68 // 30 ms frames. | |
69 bytes_per_frame = 50; | |
70 timestamps_per_frame = 240; | |
71 } else { | |
72 LOG(LS_WARNING) << "AudioDecoderIlbc::SplitPacket: Invalid payload"; | |
73 return splits; | |
74 } | |
75 | |
76 if (payload_len == bytes_per_frame) { | |
77 // Special case. Do not split the payload. | |
78 return {PacketSplit{0, payload_len, 0}}; | |
79 } | |
kwiberg-webrtc
2016/08/26 12:39:25
Is this special case really needed? It looks like
ossu
2016/08/26 13:05:30
You're right. This shouldn't be necessary. I'll re
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80 | |
81 PacketSplit split = {0, bytes_per_frame, 0}; | |
82 for (size_t len = payload_len; len > 0; len -= bytes_per_frame) { | |
83 RTC_DCHECK(len >= bytes_per_frame); | |
84 splits.push_back(split); | |
85 split.byte_offset += bytes_per_frame; | |
86 split.timestamp_offset += timestamps_per_frame; | |
87 } | |
88 | |
89 return splits; | |
90 } | |
91 | |
52 int AudioDecoderIlbc::SampleRateHz() const { | 92 int AudioDecoderIlbc::SampleRateHz() const { |
53 return 8000; | 93 return 8000; |
54 } | 94 } |
55 | 95 |
56 size_t AudioDecoderIlbc::Channels() const { | 96 size_t AudioDecoderIlbc::Channels() const { |
57 return 1; | 97 return 1; |
58 } | 98 } |
59 | 99 |
60 } // namespace webrtc | 100 } // namespace webrtc |
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