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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 is the base class for an object that send frames to a receiver. | 5 // This is the base class for an object that send frames to a receiver. |
6 // TODO(hclam): Refactor such that there is no separate AudioSender vs. | 6 // TODO(hclam): Refactor such that there is no separate AudioSender vs. |
7 // VideoSender, and the functionality of both is rolled into this class. | 7 // VideoSender, and the functionality of both is rolled into this class. |
8 | 8 |
9 #ifndef MEDIA_CAST_SENDER_FRAME_SENDER_H_ | 9 #ifndef MEDIA_CAST_SENDER_FRAME_SENDER_H_ |
10 #define MEDIA_CAST_SENDER_FRAME_SENDER_H_ | 10 #define MEDIA_CAST_SENDER_FRAME_SENDER_H_ |
11 | 11 |
12 #include "base/basictypes.h" | 12 #include "base/basictypes.h" |
13 #include "base/memory/ref_counted.h" | 13 #include "base/memory/ref_counted.h" |
14 #include "base/memory/weak_ptr.h" | 14 #include "base/memory/weak_ptr.h" |
15 #include "base/time/time.h" | 15 #include "base/time/time.h" |
16 #include "media/cast/cast_environment.h" | 16 #include "media/cast/cast_environment.h" |
17 #include "media/cast/net/rtcp/rtcp.h" | 17 #include "media/cast/net/rtcp/rtcp.h" |
18 #include "media/cast/sender/congestion_control.h" | 18 #include "media/cast/sender/congestion_control.h" |
19 | 19 |
20 namespace media { | 20 namespace media { |
21 namespace cast { | 21 namespace cast { |
22 | 22 |
23 class FrameSender { | 23 class FrameSender { |
24 public: | 24 public: |
25 FrameSender(scoped_refptr<CastEnvironment> cast_environment, | 25 FrameSender(scoped_refptr<CastEnvironment> cast_environment, |
26 bool is_audio, | 26 bool is_audio, |
27 CastTransportSender* const transport_sender, | 27 CastTransportSender* const transport_sender, |
28 base::TimeDelta rtcp_interval, | |
29 int rtp_timebase, | 28 int rtp_timebase, |
30 uint32 ssrc, | 29 uint32 ssrc, |
31 double max_frame_rate, | 30 double max_frame_rate, |
32 base::TimeDelta min_playout_delay, | 31 base::TimeDelta min_playout_delay, |
33 base::TimeDelta max_playout_delay, | 32 base::TimeDelta max_playout_delay, |
34 CongestionControl* congestion_control); | 33 CongestionControl* congestion_control); |
35 virtual ~FrameSender(); | 34 virtual ~FrameSender(); |
36 | 35 |
37 int rtp_timebase() const { return rtp_timebase_; } | 36 int rtp_timebase() const { return rtp_timebase_; } |
38 | 37 |
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100 // media::cast::kMaxUnackedFrames. | 99 // media::cast::kMaxUnackedFrames. |
101 void RecordLatestFrameTimestamps(uint32 frame_id, | 100 void RecordLatestFrameTimestamps(uint32 frame_id, |
102 base::TimeTicks reference_time, | 101 base::TimeTicks reference_time, |
103 RtpTimestamp rtp_timestamp); | 102 RtpTimestamp rtp_timestamp); |
104 base::TimeTicks GetRecordedReferenceTime(uint32 frame_id) const; | 103 base::TimeTicks GetRecordedReferenceTime(uint32 frame_id) const; |
105 RtpTimestamp GetRecordedRtpTimestamp(uint32 frame_id) const; | 104 RtpTimestamp GetRecordedRtpTimestamp(uint32 frame_id) const; |
106 | 105 |
107 // Returns the number of frames that were sent but not yet acknowledged. | 106 // Returns the number of frames that were sent but not yet acknowledged. |
108 int GetUnacknowledgedFrameCount() const; | 107 int GetUnacknowledgedFrameCount() const; |
109 | 108 |
110 const base::TimeDelta rtcp_interval_; | |
111 | |
112 // The total amount of time between a frame's capture/recording on the sender | 109 // The total amount of time between a frame's capture/recording on the sender |
113 // and its playback on the receiver (i.e., shown to a user). This is fixed as | 110 // and its playback on the receiver (i.e., shown to a user). This is fixed as |
114 // a value large enough to give the system sufficient time to encode, | 111 // a value large enough to give the system sufficient time to encode, |
115 // transmit/retransmit, receive, decode, and render; given its run-time | 112 // transmit/retransmit, receive, decode, and render; given its run-time |
116 // environment (sender/receiver hardware performance, network conditions, | 113 // environment (sender/receiver hardware performance, network conditions, |
117 // etc.). | 114 // etc.). |
118 base::TimeDelta target_playout_delay_; | 115 base::TimeDelta target_playout_delay_; |
119 base::TimeDelta min_playout_delay_; | 116 base::TimeDelta min_playout_delay_; |
120 base::TimeDelta max_playout_delay_; | 117 base::TimeDelta max_playout_delay_; |
121 | 118 |
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176 // NOTE: Weak pointers must be invalidated before all other member variables. | 173 // NOTE: Weak pointers must be invalidated before all other member variables. |
177 base::WeakPtrFactory<FrameSender> weak_factory_; | 174 base::WeakPtrFactory<FrameSender> weak_factory_; |
178 | 175 |
179 DISALLOW_COPY_AND_ASSIGN(FrameSender); | 176 DISALLOW_COPY_AND_ASSIGN(FrameSender); |
180 }; | 177 }; |
181 | 178 |
182 } // namespace cast | 179 } // namespace cast |
183 } // namespace media | 180 } // namespace media |
184 | 181 |
185 #endif // MEDIA_CAST_SENDER_FRAME_SENDER_H_ | 182 #endif // MEDIA_CAST_SENDER_FRAME_SENDER_H_ |
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