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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 // This class maintains a send transport for audio and video in a Cast | 5 // This class maintains a send transport for audio and video in a Cast |
| 6 // Streaming session. | 6 // Streaming session. |
| 7 // Audio, video frames and RTCP messages are submitted to this object | 7 // Audio, video frames and RTCP messages are submitted to this object |
| 8 // and then packetized and paced to the underlying UDP socket. | 8 // and then packetized and paced to the underlying UDP socket. |
| 9 // | 9 // |
| 10 // The hierarchy of send transport in a Cast Streaming session: | 10 // The hierarchy of send transport in a Cast Streaming session: |
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| 71 // "send_buffer_min_size": int | 71 // "send_buffer_min_size": int |
| 72 // - Specifies the minimum socket send buffer size. | 72 // - Specifies the minimum socket send buffer size. |
| 73 // "disable_wifi_scan" (value ignored) | 73 // "disable_wifi_scan" (value ignored) |
| 74 // - Disable wifi scans while streaming. | 74 // - Disable wifi scans while streaming. |
| 75 // "media_streaming_mode" (value ignored) | 75 // "media_streaming_mode" (value ignored) |
| 76 // - Turn media streaming mode on. | 76 // - Turn media streaming mode on. |
| 77 // Note, these options may be ignored on some platforms. | 77 // Note, these options may be ignored on some platforms. |
| 78 // TODO(hubbe): Too many callbacks, replace with an interface. | 78 // TODO(hubbe): Too many callbacks, replace with an interface. |
| 79 // http://crbug.com/557477 | 79 // http://crbug.com/557477 |
| 80 CastTransportSenderImpl( | 80 CastTransportSenderImpl( |
| 81 net::NetLog* net_log, | 81 base::WeakPtr<CastTransportSenderInfo> cast_transport_sender_info, |
| 82 base::TickClock* clock, | 82 base::TickClock* clock, |
| 83 const net::IPEndPoint& local_end_point, | |
| 84 const net::IPEndPoint& remote_end_point, | |
| 85 scoped_ptr<base::DictionaryValue> options, | |
| 86 const CastTransportStatusCallback& status_callback, | |
| 87 const BulkRawEventsCallback& raw_events_callback, | |
| 88 base::TimeDelta raw_events_callback_interval, | |
| 89 const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner, | 83 const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner, |
| 90 const PacketReceiverCallback& packet_callback, | |
| 91 PacketSender* external_transport); | 84 PacketSender* external_transport); |
| 92 | 85 |
| 93 ~CastTransportSenderImpl() final; | 86 ~CastTransportSenderImpl() final; |
| 94 | 87 |
| 95 // CastTransportSender implementation. | 88 // CastTransportSender implementation. |
| 96 void InitializeAudio(const CastTransportRtpConfig& config, | 89 void InitializeAudio(const CastTransportRtpConfig& config, |
| 97 const RtcpCastMessageCallback& cast_message_cb, | 90 const RtcpCastMessageCallback& cast_message_cb, |
| 98 const RtcpRttCallback& rtt_cb) final; | 91 const RtcpRttCallback& rtt_cb) final; |
| 99 void InitializeVideo(const CastTransportRtpConfig& config, | 92 void InitializeVideo(const CastTransportRtpConfig& config, |
| 100 const RtcpCastMessageCallback& cast_message_cb, | 93 const RtcpCastMessageCallback& cast_message_cb, |
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| 149 | 142 |
| 150 // Called when a log message is received. | 143 // Called when a log message is received. |
| 151 void OnReceivedLogMessage(EventMediaType media_type, | 144 void OnReceivedLogMessage(EventMediaType media_type, |
| 152 const RtcpReceiverLogMessage& log); | 145 const RtcpReceiverLogMessage& log); |
| 153 | 146 |
| 154 // Called when a RTCP Cast message is received. | 147 // Called when a RTCP Cast message is received. |
| 155 void OnReceivedCastMessage(uint32 ssrc, | 148 void OnReceivedCastMessage(uint32 ssrc, |
| 156 const RtcpCastMessageCallback& cast_message_cb, | 149 const RtcpCastMessageCallback& cast_message_cb, |
| 157 const RtcpCastMessage& cast_message); | 150 const RtcpCastMessage& cast_message); |
| 158 | 151 |
| 152 base::WeakPtr<CastTransportSenderInfo> cast_transport_sender_info_; |
| 159 base::TickClock* clock_; // Not owned by this class. | 153 base::TickClock* clock_; // Not owned by this class. |
| 160 CastTransportStatusCallback status_callback_; | |
| 161 scoped_refptr<base::SingleThreadTaskRunner> transport_task_runner_; | 154 scoped_refptr<base::SingleThreadTaskRunner> transport_task_runner_; |
| 162 | 155 |
| 163 // FrameEvents and PacketEvents pending delivery via |raw_events_callback_|. | 156 // FrameEvents and PacketEvents pending delivery via |raw_events_callback_|. |
| 164 // Do not add elements to these when |raw_events_callback_.is_null()|. | 157 // Do not add elements to these when |raw_events_callback_.is_null()|. |
| 165 std::vector<FrameEvent> recent_frame_events_; | 158 std::vector<FrameEvent> recent_frame_events_; |
| 166 std::vector<PacketEvent> recent_packet_events_; | 159 std::vector<PacketEvent> recent_packet_events_; |
| 167 | 160 |
| 168 // Interface to a UDP socket. | 161 // Interface to a UDP socket. |
| 169 scoped_ptr<UdpTransport> transport_; | 162 scoped_ptr<UdpTransport> transport_; |
| 170 | 163 |
| 171 // Packet sender that performs pacing. | 164 // Packet sender that performs pacing. |
| 172 PacedSender pacer_; | 165 PacedSender pacer_; |
| 173 | 166 |
| 174 // Packetizer for audio and video frames. | 167 // Packetizer for audio and video frames. |
| 175 scoped_ptr<RtpSender> audio_sender_; | 168 scoped_ptr<RtpSender> audio_sender_; |
| 176 scoped_ptr<RtpSender> video_sender_; | 169 scoped_ptr<RtpSender> video_sender_; |
| 177 | 170 |
| 178 // Maintains RTCP session for audio and video. | 171 // Maintains RTCP session for audio and video. |
| 179 scoped_ptr<Rtcp> audio_rtcp_session_; | 172 scoped_ptr<Rtcp> audio_rtcp_session_; |
| 180 scoped_ptr<Rtcp> video_rtcp_session_; | 173 scoped_ptr<Rtcp> video_rtcp_session_; |
| 181 | 174 |
| 182 // Encrypts data in EncodedFrames before they are sent. Note that it's | 175 // Encrypts data in EncodedFrames before they are sent. Note that it's |
| 183 // important for the encryption to happen here, in code that would execute in | 176 // important for the encryption to happen here, in code that would execute in |
| 184 // the main browser process, for security reasons. This helps to mitigate | 177 // the main browser process, for security reasons. This helps to mitigate |
| 185 // the damage that could be caused by a compromised renderer process. | 178 // the damage that could be caused by a compromised renderer process. |
| 186 TransportEncryptionHandler audio_encryptor_; | 179 TransportEncryptionHandler audio_encryptor_; |
| 187 TransportEncryptionHandler video_encryptor_; | 180 TransportEncryptionHandler video_encryptor_; |
| 188 | 181 |
| 189 BulkRawEventsCallback raw_events_callback_; | |
| 190 base::TimeDelta raw_events_callback_interval_; | 182 base::TimeDelta raw_events_callback_interval_; |
| 191 | 183 |
| 192 // Right after a frame is sent we record the number of bytes sent to the | 184 // Right after a frame is sent we record the number of bytes sent to the |
| 193 // socket. We record the corresponding bytes sent for the most recent ACKed | 185 // socket. We record the corresponding bytes sent for the most recent ACKed |
| 194 // audio packet. | 186 // audio packet. |
| 195 int64 last_byte_acked_for_audio_; | 187 int64 last_byte_acked_for_audio_; |
| 196 | 188 |
| 197 // Packets that don't match these ssrcs are ignored. | 189 // Packets that don't match these ssrcs are ignored. |
| 198 std::set<uint32> valid_ssrcs_; | 190 std::set<uint32> valid_ssrcs_; |
| 199 | 191 |
| 200 // Called with incoming packets. (Unless they match the | |
| 201 // channels created by Initialize{Audio,Video}. | |
| 202 PacketReceiverCallback packet_callback_; | |
| 203 | |
| 204 scoped_ptr<net::ScopedWifiOptions> wifi_options_autoreset_; | 192 scoped_ptr<net::ScopedWifiOptions> wifi_options_autoreset_; |
| 205 | 193 |
| 206 base::WeakPtrFactory<CastTransportSenderImpl> weak_factory_; | 194 base::WeakPtrFactory<CastTransportSenderImpl> weak_factory_; |
| 207 | 195 |
| 208 DISALLOW_COPY_AND_ASSIGN(CastTransportSenderImpl); | 196 DISALLOW_COPY_AND_ASSIGN(CastTransportSenderImpl); |
| 209 }; | 197 }; |
| 210 | 198 |
| 211 } // namespace cast | 199 } // namespace cast |
| 212 } // namespace media | 200 } // namespace media |
| 213 | 201 |
| 214 #endif // MEDIA_CAST_NET_CAST_TRANSPORT_SENDER_IMPL_H_ | 202 #endif // MEDIA_CAST_NET_CAST_TRANSPORT_SENDER_IMPL_H_ |
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