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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 | |
3 // found in the LICENSE file. | |
4 | |
5 // This file contains the interface to the cast RTP sender. | |
6 | |
7 #ifndef MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_SENDER_H_ | |
8 #define MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_SENDER_H_ | |
9 | |
10 #include <map> | |
11 #include <set> | |
12 | |
13 #include "base/memory/scoped_ptr.h" | |
14 #include "base/time/tick_clock.h" | |
15 #include "base/time/time.h" | |
16 #include "base/memory/weak_ptr.h" | |
17 #include "media/cast/cast_config.h" | |
18 #include "media/cast/cast_environment.h" | |
19 #include "media/cast/transport/cast_transport_defines.h" | |
20 #include "media/cast/transport/cast_transport_sender.h" | |
21 #include "media/cast/transport/pacing/paced_sender.h" | |
22 #include "media/cast/transport/rtp_sender/packet_storage/packet_storage.h" | |
23 #include "media/cast/transport/rtp_sender/rtp_packetizer/rtp_packetizer.h" | |
24 | |
25 namespace media { | |
26 namespace cast { | |
27 | |
28 namespace transport { | |
29 | |
30 // This object is only called from the main cast thread. | |
31 // This class handles splitting encoded audio and video frames into packets and | |
32 // add an RTP header to each packet. The sent packets are stored until they are | |
33 // acknowledged by the remote peer or timed out. | |
34 class RtpSender { | |
35 public: | |
36 RtpSender( | |
37 base::TickClock* clock, | |
38 const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner, | |
39 PacedSender* const transport); | |
40 | |
41 ~RtpSender(); | |
42 | |
43 // This must be called before sending any frames. Returns false if | |
44 // configuration is invalid. | |
45 bool Initialize(const CastTransportRtpConfig& config); | |
46 | |
47 void SendFrame(const EncodedFrame& frame); | |
48 | |
49 void ResendPackets(const MissingFramesAndPacketsMap& missing_packets, | |
50 bool cancel_rtx_if_not_in_list, | |
51 base::TimeDelta dedupe_window); | |
52 | |
53 size_t send_packet_count() const { | |
54 return packetizer_ ? packetizer_->send_packet_count() : 0; | |
55 } | |
56 size_t send_octet_count() const { | |
57 return packetizer_ ? packetizer_->send_octet_count() : 0; | |
58 } | |
59 uint32 ssrc() const { return config_.ssrc; } | |
60 | |
61 private: | |
62 void UpdateSequenceNumber(Packet* packet); | |
63 | |
64 base::TickClock* clock_; // Not owned by this class. | |
65 RtpPacketizerConfig config_; | |
66 scoped_ptr<RtpPacketizer> packetizer_; | |
67 scoped_ptr<PacketStorage> storage_; | |
68 PacedSender* const transport_; | |
69 scoped_refptr<base::SingleThreadTaskRunner> transport_task_runner_; | |
70 | |
71 // NOTE: Weak pointers must be invalidated before all other member variables. | |
72 base::WeakPtrFactory<RtpSender> weak_factory_; | |
73 | |
74 DISALLOW_COPY_AND_ASSIGN(RtpSender); | |
75 }; | |
76 | |
77 } // namespace transport | |
78 } // namespace cast | |
79 } // namespace media | |
80 | |
81 #endif // MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_SENDER_H_ | |
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