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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "media/cast/audio_sender/audio_sender.h" | 5 #include "media/cast/audio_sender/audio_sender.h" |
| 6 | 6 |
| 7 #include "base/bind.h" | 7 #include "base/bind.h" |
| 8 #include "base/logging.h" | 8 #include "base/logging.h" |
| 9 #include "base/message_loop/message_loop.h" | 9 #include "base/message_loop/message_loop.h" |
| 10 #include "crypto/encryptor.h" | 10 #include "crypto/encryptor.h" |
| 11 #include "crypto/symmetric_key.h" | 11 #include "crypto/symmetric_key.h" |
| 12 #include "media/cast/audio_sender/audio_encoder.h" | 12 #include "media/cast/audio_sender/audio_encoder.h" |
| 13 #include "media/cast/cast_environment.h" |
| 13 #include "media/cast/rtcp/rtcp.h" | 14 #include "media/cast/rtcp/rtcp.h" |
| 14 #include "media/cast/transport/rtp_sender/rtp_sender.h" | 15 #include "media/cast/transport/rtp_sender/rtp_sender.h" |
| 15 | 16 |
| 16 namespace media { | 17 namespace media { |
| 17 namespace cast { | 18 namespace cast { |
| 18 | 19 |
| 19 const int64 kMinSchedulingDelayMs = 1; | 20 const int64 kMinSchedulingDelayMs = 1; |
| 20 | 21 |
| 21 class LocalRtcpAudioSenderFeedback : public RtcpSenderFeedback { | 22 class LocalRtcpAudioSenderFeedback : public RtcpSenderFeedback { |
| 22 public: | 23 public: |
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| 50 | 51 |
| 51 private: | 52 private: |
| 52 transport::RtpSender* rtp_sender_; | 53 transport::RtpSender* rtp_sender_; |
| 53 }; | 54 }; |
| 54 | 55 |
| 55 AudioSender::AudioSender( | 56 AudioSender::AudioSender( |
| 56 scoped_refptr<CastEnvironment> cast_environment, | 57 scoped_refptr<CastEnvironment> cast_environment, |
| 57 const AudioSenderConfig& audio_config, | 58 const AudioSenderConfig& audio_config, |
| 58 transport::PacedPacketSender* const paced_packet_sender) | 59 transport::PacedPacketSender* const paced_packet_sender) |
| 59 : cast_environment_(cast_environment), | 60 : cast_environment_(cast_environment), |
| 60 rtp_sender_(cast_environment->Clock(), &audio_config, NULL, | 61 rtp_sender_(cast_environment, &audio_config, NULL, |
| 61 paced_packet_sender), | 62 paced_packet_sender), |
| 62 rtcp_feedback_(new LocalRtcpAudioSenderFeedback(this)), | 63 rtcp_feedback_(new LocalRtcpAudioSenderFeedback(this)), |
| 63 rtp_audio_sender_statistics_( | 64 rtp_audio_sender_statistics_( |
| 64 new LocalRtpSenderStatistics(&rtp_sender_)), | 65 new LocalRtpSenderStatistics(&rtp_sender_)), |
| 65 rtcp_(cast_environment, | 66 rtcp_(cast_environment, |
| 66 rtcp_feedback_.get(), | 67 rtcp_feedback_.get(), |
| 67 paced_packet_sender, | 68 paced_packet_sender, |
| 68 rtp_audio_sender_statistics_.get(), | 69 rtp_audio_sender_statistics_.get(), |
| 69 NULL, | 70 NULL, |
| 70 audio_config.rtcp_mode, | 71 audio_config.rtcp_mode, |
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| 111 DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN)); | 112 DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN)); |
| 112 DCHECK(audio_encoder_.get()) << "Invalid internal state"; | 113 DCHECK(audio_encoder_.get()) << "Invalid internal state"; |
| 113 // TODO(mikhal): Resolve calculation of the audio rtp_timestamp for logging. | 114 // TODO(mikhal): Resolve calculation of the audio rtp_timestamp for logging. |
| 114 // This is a tmp solution to allow the code to build. | 115 // This is a tmp solution to allow the code to build. |
| 115 base::TimeTicks now = cast_environment_->Clock()->NowTicks(); | 116 base::TimeTicks now = cast_environment_->Clock()->NowTicks(); |
| 116 cast_environment_->Logging()->InsertFrameEvent(now, kAudioFrameReceived, | 117 cast_environment_->Logging()->InsertFrameEvent(now, kAudioFrameReceived, |
| 117 GetVideoRtpTimestamp(recorded_time), kFrameIdUnknown); | 118 GetVideoRtpTimestamp(recorded_time), kFrameIdUnknown); |
| 118 audio_encoder_->InsertAudio(audio_bus, recorded_time, done_callback); | 119 audio_encoder_->InsertAudio(audio_bus, recorded_time, done_callback); |
| 119 } | 120 } |
| 120 | 121 |
| 121 void AudioSender::InsertCodedAudioFrame( | 122 void AudioSender::InsertCodedAudioFrame(const EncodedAudioFrame* audio_frame, |
| 122 const transport::EncodedAudioFrame* audio_frame, | 123 const base::TimeTicks& recorded_time, |
| 123 const base::TimeTicks& recorded_time, | 124 const base::Closure callback) { |
| 124 const base::Closure callback) { | |
| 125 DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN)); | 125 DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN)); |
| 126 DCHECK(audio_encoder_.get() == NULL) << "Invalid internal state"; | 126 DCHECK(audio_encoder_.get() == NULL) << "Invalid internal state"; |
| 127 | 127 |
| 128 base::TimeTicks now = cast_environment_->Clock()->NowTicks(); | 128 base::TimeTicks now = cast_environment_->Clock()->NowTicks(); |
| 129 cast_environment_->Logging()->InsertFrameEvent(now, kAudioFrameReceived, | 129 cast_environment_->Logging()->InsertFrameEvent(now, kAudioFrameReceived, |
| 130 GetVideoRtpTimestamp(recorded_time), kFrameIdUnknown); | 130 GetVideoRtpTimestamp(recorded_time), kFrameIdUnknown); |
| 131 | 131 |
| 132 if (encryptor_) { | 132 if (encryptor_) { |
| 133 transport::EncodedAudioFrame encrypted_frame; | 133 EncodedAudioFrame encrypted_frame; |
| 134 if (!EncryptAudioFrame(*audio_frame, &encrypted_frame)) { | 134 if (!EncryptAudioFrame(*audio_frame, &encrypted_frame)) { |
| 135 // Logging already done. | 135 // Logging already done. |
| 136 return; | 136 return; |
| 137 } | 137 } |
| 138 rtp_sender_.IncomingEncodedAudioFrame(&encrypted_frame, recorded_time); | 138 rtp_sender_.IncomingEncodedAudioFrame(&encrypted_frame, recorded_time); |
| 139 } else { | 139 } else { |
| 140 rtp_sender_.IncomingEncodedAudioFrame(audio_frame, recorded_time); | 140 rtp_sender_.IncomingEncodedAudioFrame(audio_frame, recorded_time); |
| 141 } | 141 } |
| 142 callback.Run(); | 142 callback.Run(); |
| 143 } | 143 } |
| 144 | 144 |
| 145 void AudioSender::SendEncodedAudioFrame( | 145 void AudioSender::SendEncodedAudioFrame( |
| 146 scoped_ptr<transport::EncodedAudioFrame> audio_frame, | 146 scoped_ptr<EncodedAudioFrame> audio_frame, |
| 147 const base::TimeTicks& recorded_time) { | 147 const base::TimeTicks& recorded_time) { |
| 148 DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN)); | 148 DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN)); |
| 149 InitializeTimers(); | 149 InitializeTimers(); |
| 150 if (encryptor_) { | 150 if (encryptor_) { |
| 151 transport::EncodedAudioFrame encrypted_frame; | 151 EncodedAudioFrame encrypted_frame; |
| 152 if (!EncryptAudioFrame(*audio_frame.get(), &encrypted_frame)) { | 152 if (!EncryptAudioFrame(*audio_frame.get(), &encrypted_frame)) { |
| 153 // Logging already done. | 153 // Logging already done. |
| 154 return; | 154 return; |
| 155 } | 155 } |
| 156 rtp_sender_.IncomingEncodedAudioFrame(&encrypted_frame, recorded_time); | 156 rtp_sender_.IncomingEncodedAudioFrame(&encrypted_frame, recorded_time); |
| 157 } else { | 157 } else { |
| 158 rtp_sender_.IncomingEncodedAudioFrame(audio_frame.get(), recorded_time); | 158 rtp_sender_.IncomingEncodedAudioFrame(audio_frame.get(), recorded_time); |
| 159 } | 159 } |
| 160 } | 160 } |
| 161 | 161 |
| 162 bool AudioSender::EncryptAudioFrame( | 162 bool AudioSender::EncryptAudioFrame(const EncodedAudioFrame& audio_frame, |
| 163 const transport::EncodedAudioFrame& audio_frame, | 163 EncodedAudioFrame* encrypted_frame) { |
| 164 transport::EncodedAudioFrame* encrypted_frame) { | |
| 165 DCHECK(encryptor_) << "Invalid state"; | 164 DCHECK(encryptor_) << "Invalid state"; |
| 166 | 165 |
| 167 if (!encryptor_->SetCounter(GetAesNonce(audio_frame.frame_id, iv_mask_))) { | 166 if (!encryptor_->SetCounter(GetAesNonce(audio_frame.frame_id, iv_mask_))) { |
| 168 NOTREACHED() << "Failed to set counter"; | 167 NOTREACHED() << "Failed to set counter"; |
| 169 return false; | 168 return false; |
| 170 } | 169 } |
| 171 if (!encryptor_->Encrypt(audio_frame.data, &encrypted_frame->data)) { | 170 if (!encryptor_->Encrypt(audio_frame.data, &encrypted_frame->data)) { |
| 172 NOTREACHED() << "Encrypt error"; | 171 NOTREACHED() << "Encrypt error"; |
| 173 return false; | 172 return false; |
| 174 } | 173 } |
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| 207 void AudioSender::SendRtcpReport() { | 206 void AudioSender::SendRtcpReport() { |
| 208 DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN)); | 207 DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN)); |
| 209 // We don't send audio logging messages since all captured audio frames will | 208 // We don't send audio logging messages since all captured audio frames will |
| 210 // be sent. | 209 // be sent. |
| 211 rtcp_.SendRtcpFromRtpSender(NULL); | 210 rtcp_.SendRtcpFromRtpSender(NULL); |
| 212 ScheduleNextRtcpReport(); | 211 ScheduleNextRtcpReport(); |
| 213 } | 212 } |
| 214 | 213 |
| 215 } // namespace cast | 214 } // namespace cast |
| 216 } // namespace media | 215 } // namespace media |
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