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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef MEDIA_CAST_TRANSPORT_CAST_TRANSPORT_IMPL_H_ | |
| 6 #define MEDIA_CAST_TRANSPORT_CAST_TRANSPORT_IMPL_H_ | |
| 7 | |
| 8 #include "base/callback.h" | |
| 9 #include "base/memory/ref_counted.h" | |
| 10 #include "base/memory/scoped_ptr.h" | |
| 11 #include "base/time/tick_clock.h" | |
| 12 #include "base/time/time.h" | |
| 13 #include "base/timer/timer.h" | |
| 14 #include "media/cast/logging/logging_defines.h" | |
| 15 #include "media/cast/logging/simple_event_subscriber.h" | |
| 16 #include "media/cast/transport/cast_transport_config.h" | |
| 17 #include "media/cast/transport/cast_transport_sender.h" | |
| 18 #include "media/cast/transport/pacing/paced_sender.h" | |
| 19 #include "media/cast/transport/rtcp/rtcp_builder.h" | |
| 20 #include "media/cast/transport/rtp_sender/rtp_sender.h" | |
| 21 #include "media/cast/transport/utility/transport_encryption_handler.h" | |
| 22 | |
| 23 namespace media { | |
| 24 namespace cast { | |
| 25 namespace transport { | |
| 26 | |
| 27 class CastTransportSenderImpl : public CastTransportSender { | |
| 28 public: | |
| 29 // external_transport is only used for testing. | |
| 30 // Note that SetPacketReceiver does not work if an external | |
| 31 // transport is provided. | |
| 32 // |raw_events_callback|: Raw events will be returned on this callback | |
| 33 // which will be invoked every |raw_events_callback_interval|. | |
| 34 // This can be a null callback, i.e. if user is not interested in raw events. | |
| 35 // |raw_events_callback_interval|: This can be |base::TimeDelta()| if | |
| 36 // |raw_events_callback| is a null callback. | |
| 37 CastTransportSenderImpl( | |
| 38 net::NetLog* net_log, | |
| 39 base::TickClock* clock, | |
| 40 const net::IPEndPoint& remote_end_point, | |
| 41 const CastTransportStatusCallback& status_callback, | |
| 42 const BulkRawEventsCallback& raw_events_callback, | |
| 43 base::TimeDelta raw_events_callback_interval, | |
| 44 const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner, | |
| 45 PacketSender* external_transport); | |
| 46 | |
| 47 virtual ~CastTransportSenderImpl(); | |
| 48 | |
| 49 virtual void InitializeAudio(const CastTransportRtpConfig& config) OVERRIDE; | |
| 50 virtual void InitializeVideo(const CastTransportRtpConfig& config) OVERRIDE; | |
| 51 | |
| 52 // CastTransportSender implementation. | |
| 53 virtual void SetPacketReceiver(const PacketReceiverCallback& packet_receiver) | |
| 54 OVERRIDE; | |
| 55 | |
| 56 virtual void InsertCodedAudioFrame(const EncodedFrame& audio_frame) OVERRIDE; | |
| 57 virtual void InsertCodedVideoFrame(const EncodedFrame& video_frame) OVERRIDE; | |
| 58 | |
| 59 virtual void SendRtcpFromRtpSender(uint32 packet_type_flags, | |
| 60 uint32 ntp_seconds, | |
| 61 uint32 ntp_fraction, | |
| 62 uint32 rtp_timestamp, | |
| 63 const RtcpDlrrReportBlock& dlrr, | |
| 64 uint32 sending_ssrc, | |
| 65 const std::string& c_name) OVERRIDE; | |
| 66 | |
| 67 virtual void ResendPackets(bool is_audio, | |
| 68 const MissingFramesAndPacketsMap& missing_packets, | |
| 69 bool cancel_rtx_if_not_in_list, | |
| 70 base::TimeDelta dedupe_window) | |
| 71 OVERRIDE; | |
| 72 | |
| 73 private: | |
| 74 // If |raw_events_callback_| is non-null, calls it with events collected | |
| 75 // by |event_subscriber_| since last call. | |
| 76 void SendRawEvents(); | |
| 77 | |
| 78 base::TickClock* clock_; // Not owned by this class. | |
| 79 CastTransportStatusCallback status_callback_; | |
| 80 scoped_refptr<base::SingleThreadTaskRunner> transport_task_runner_; | |
| 81 | |
| 82 scoped_ptr<UdpTransport> transport_; | |
| 83 LoggingImpl logging_; | |
| 84 PacedSender pacer_; | |
| 85 RtcpBuilder rtcp_builder_; | |
| 86 scoped_ptr<RtpSender> audio_sender_; | |
| 87 scoped_ptr<RtpSender> video_sender_; | |
| 88 | |
| 89 // Encrypts data in EncodedFrames before they are sent. Note that it's | |
| 90 // important for the encryption to happen here, in code that would execute in | |
| 91 // the main browser process, for security reasons. This helps to mitigate | |
| 92 // the damage that could be caused by a compromised renderer process. | |
| 93 TransportEncryptionHandler audio_encryptor_; | |
| 94 TransportEncryptionHandler video_encryptor_; | |
| 95 | |
| 96 // This is non-null iff |raw_events_callback_| is non-null. | |
| 97 scoped_ptr<SimpleEventSubscriber> event_subscriber_; | |
| 98 base::RepeatingTimer<CastTransportSenderImpl> raw_events_timer_; | |
| 99 | |
| 100 BulkRawEventsCallback raw_events_callback_; | |
| 101 | |
| 102 DISALLOW_COPY_AND_ASSIGN(CastTransportSenderImpl); | |
| 103 }; | |
| 104 | |
| 105 } // namespace transport | |
| 106 } // namespace cast | |
| 107 } // namespace media | |
| 108 | |
| 109 #endif // MEDIA_CAST_TRANSPORT_CAST_TRANSPORT_IMPL_H_ | |
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