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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/opus/audio_decoder_opus.h" | 11 #include "webrtc/modules/audio_coding/codecs/opus/audio_decoder_opus.h" |
12 | 12 |
13 #include <utility> | |
14 | |
13 #include "webrtc/base/checks.h" | 15 #include "webrtc/base/checks.h" |
14 | 16 |
15 namespace webrtc { | 17 namespace webrtc { |
16 | 18 |
19 namespace { | |
20 class OpusFrame : public AudioDecoder::EncodedAudioFrame { | |
21 public: | |
22 OpusFrame(AudioDecoderOpus* decoder, | |
23 rtc::Buffer&& payload, | |
24 bool is_primary_payload) | |
25 : decoder_(decoder), | |
26 payload_(std::move(payload)), | |
27 is_primary_payload_(is_primary_payload) {} | |
28 | |
29 size_t Duration() const override { | |
30 int ret; | |
31 if (is_primary_payload_) { | |
32 ret = decoder_->PacketDuration(payload_.data(), payload_.size()); | |
33 } else { | |
34 ret = decoder_->PacketDurationRedundant(payload_.data(), payload_.size()); | |
35 } | |
36 return (ret < 0) ? 0 : static_cast<size_t>(ret); | |
37 } | |
38 | |
39 rtc::Optional<DecodeResult> Decode( | |
40 rtc::ArrayView<int16_t> decoded) const override { | |
41 AudioDecoder::SpeechType speech_type = AudioDecoder::kSpeech; | |
42 int ret; | |
43 if (is_primary_payload_) { | |
44 ret = decoder_->Decode( | |
45 payload_.data(), payload_.size(), decoder_->SampleRateHz(), | |
46 decoded.size() * sizeof(int16_t), decoded.data(), &speech_type); | |
47 } else { | |
48 ret = decoder_->DecodeRedundant( | |
49 payload_.data(), payload_.size(), decoder_->SampleRateHz(), | |
50 decoded.size() * sizeof(int16_t), decoded.data(), &speech_type); | |
51 } | |
kwiberg-webrtc
2016/09/20 09:14:45
That's a lot of duplicated function arguments. Con
ossu
2016/09/20 13:51:56
I'll be leaving this as-is for now, since I expect
kwiberg-webrtc
2016/09/20 14:56:22
Acknowledged.
But expect me to keep badgering you
ossu
2016/09/20 15:45:21
Badger? Badger, badger, badger!
| |
52 | |
53 if (ret < 0) | |
54 return rtc::Optional<DecodeResult>(); | |
55 | |
56 return rtc::Optional<DecodeResult>({static_cast<size_t>(ret), speech_type}); | |
57 } | |
58 | |
59 private: | |
60 AudioDecoderOpus* const decoder_; | |
61 const rtc::Buffer payload_; | |
62 const bool is_primary_payload_; | |
63 }; | |
64 | |
65 } // namespace | |
66 | |
17 AudioDecoderOpus::AudioDecoderOpus(size_t num_channels) | 67 AudioDecoderOpus::AudioDecoderOpus(size_t num_channels) |
18 : channels_(num_channels) { | 68 : channels_(num_channels) { |
19 RTC_DCHECK(num_channels == 1 || num_channels == 2); | 69 RTC_DCHECK(num_channels == 1 || num_channels == 2); |
20 WebRtcOpus_DecoderCreate(&dec_state_, channels_); | 70 WebRtcOpus_DecoderCreate(&dec_state_, channels_); |
21 WebRtcOpus_DecoderInit(dec_state_); | 71 WebRtcOpus_DecoderInit(dec_state_); |
22 } | 72 } |
23 | 73 |
24 AudioDecoderOpus::~AudioDecoderOpus() { | 74 AudioDecoderOpus::~AudioDecoderOpus() { |
25 WebRtcOpus_DecoderFree(dec_state_); | 75 WebRtcOpus_DecoderFree(dec_state_); |
26 } | 76 } |
27 | 77 |
78 std::vector<AudioDecoder::ParseResult> AudioDecoderOpus::ParsePayload( | |
79 rtc::Buffer&& payload, | |
80 uint32_t timestamp) { | |
81 std::vector<ParseResult> results; | |
82 | |
83 if (PacketHasFec(payload.data(), payload.size())) { | |
84 const int duration = | |
85 PacketDurationRedundant(payload.data(), payload.size()); | |
86 RTC_DCHECK_GE(duration, 0); | |
87 rtc::Buffer payload_copy(payload.data(), payload.size()); | |
88 std::unique_ptr<EncodedAudioFrame> fec_frame( | |
89 new OpusFrame(this, std::move(payload_copy), false)); | |
90 results.emplace_back(timestamp - duration, 1, std::move(fec_frame)); | |
91 } | |
92 std::unique_ptr<EncodedAudioFrame> frame( | |
93 new OpusFrame(this, std::move(payload), true)); | |
94 results.emplace_back(timestamp, 0, std::move(frame)); | |
95 return results; | |
96 } | |
97 | |
28 int AudioDecoderOpus::DecodeInternal(const uint8_t* encoded, | 98 int AudioDecoderOpus::DecodeInternal(const uint8_t* encoded, |
29 size_t encoded_len, | 99 size_t encoded_len, |
30 int sample_rate_hz, | 100 int sample_rate_hz, |
31 int16_t* decoded, | 101 int16_t* decoded, |
32 SpeechType* speech_type) { | 102 SpeechType* speech_type) { |
33 RTC_DCHECK_EQ(sample_rate_hz, 48000); | 103 RTC_DCHECK_EQ(sample_rate_hz, 48000); |
34 int16_t temp_type = 1; // Default is speech. | 104 int16_t temp_type = 1; // Default is speech. |
35 int ret = | 105 int ret = |
36 WebRtcOpus_Decode(dec_state_, encoded, encoded_len, decoded, &temp_type); | 106 WebRtcOpus_Decode(dec_state_, encoded, encoded_len, decoded, &temp_type); |
37 if (ret > 0) | 107 if (ret > 0) |
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89 | 159 |
90 int AudioDecoderOpus::SampleRateHz() const { | 160 int AudioDecoderOpus::SampleRateHz() const { |
91 return 48000; | 161 return 48000; |
92 } | 162 } |
93 | 163 |
94 size_t AudioDecoderOpus::Channels() const { | 164 size_t AudioDecoderOpus::Channels() const { |
95 return channels_; | 165 return channels_; |
96 } | 166 } |
97 | 167 |
98 } // namespace webrtc | 168 } // namespace webrtc |
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