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.
5 // This file contains the interface to the cast RTP sender.
7 #ifndef MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_SENDER_H_
8 #define MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_SENDER_H_
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"
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.
37 base::TickClock* clock,
38 const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner,
39 PacedSender* const transport);
43 // Initialize audio stack. Audio must be initialized prior to sending encoded
44 // audio frames. Returns false if configuration is invalid.
45 bool InitializeAudio(const CastTransportAudioConfig& config);
47 // Initialize video stack. Video must be initialized prior to sending encoded
48 // video frames. Returns false if configuration is invalid.
49 bool InitializeVideo(const CastTransportVideoConfig& config);
51 // The video_frame objects ownership is handled by the main cast thread.
52 void IncomingEncodedVideoFrame(const EncodedVideoFrame* video_frame,
53 const base::TimeTicks& capture_time);
55 // The audio_frame objects ownership is handled by the main cast thread.
56 void IncomingEncodedAudioFrame(const EncodedAudioFrame* audio_frame,
57 const base::TimeTicks& recorded_time);
59 void ResendPackets(const MissingFramesAndPacketsMap& missing_packets);
61 // Set the callback on which RTP statistics data will be returned. Calling
62 // this function would start a timer that would schedule the callback in
63 // a constant interval.
64 void SubscribeRtpStatsCallback(const CastTransportRtpStatistics& callback);
67 void ScheduleNextStatsReport();
69 void UpdateSequenceNumber(Packet* packet);
71 base::TickClock* clock_; // Not owned by this class.
72 RtpPacketizerConfig config_;
73 scoped_ptr<RtpPacketizer> packetizer_;
74 scoped_ptr<PacketStorage> storage_;
75 PacedSender* const transport_;
76 CastTransportRtpStatistics stats_callback_;
77 scoped_refptr<base::SingleThreadTaskRunner> transport_task_runner_;
79 // NOTE: Weak pointers must be invalidated before all other member variables.
80 base::WeakPtrFactory<RtpSender> weak_factory_;
82 DISALLOW_COPY_AND_ASSIGN(RtpSender);
85 } // namespace transport
89 #endif // MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_SENDER_H_