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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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