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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 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 | 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 #ifndef MEDIA_CAST_VIDEO_RECEIVER_VIDEO_RECEIVER_H_ | 5 #ifndef MEDIA_CAST_VIDEO_RECEIVER_VIDEO_RECEIVER_H_ |
| 6 #define MEDIA_CAST_VIDEO_RECEIVER_VIDEO_RECEIVER_H_ | 6 #define MEDIA_CAST_VIDEO_RECEIVER_VIDEO_RECEIVER_H_ |
| 7 | 7 |
| 8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
| 9 #include "base/callback.h" | 9 #include "base/callback.h" |
| 10 #include "base/memory/ref_counted.h" | 10 #include "base/memory/ref_counted.h" |
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| 69 // Request a decoded video frame. | 69 // Request a decoded video frame. |
| 70 // | 70 // |
| 71 // The given |callback| is guaranteed to be run at some point in the future, | 71 // The given |callback| is guaranteed to be run at some point in the future, |
| 72 // even if to respond with NULL at shutdown time. | 72 // even if to respond with NULL at shutdown time. |
| 73 void GetRawVideoFrame(const VideoFrameDecodedCallback& callback); | 73 void GetRawVideoFrame(const VideoFrameDecodedCallback& callback); |
| 74 | 74 |
| 75 // Request an encoded video frame. | 75 // Request an encoded video frame. |
| 76 // | 76 // |
| 77 // The given |callback| is guaranteed to be run at some point in the future, | 77 // The given |callback| is guaranteed to be run at some point in the future, |
| 78 // even if to respond with NULL at shutdown time. | 78 // even if to respond with NULL at shutdown time. |
| 79 void GetEncodedVideoFrame(const VideoFrameEncodedCallback& callback); | 79 void GetEncodedVideoFrame(const FrameEncodedCallback& callback); |
| 80 | 80 |
| 81 // Deliver another packet, possibly a duplicate, and possibly out-of-order. | 81 // Deliver another packet, possibly a duplicate, and possibly out-of-order. |
| 82 void IncomingPacket(scoped_ptr<Packet> packet); | 82 void IncomingPacket(scoped_ptr<Packet> packet); |
| 83 | 83 |
| 84 protected: | 84 protected: |
| 85 friend class VideoReceiverTest; // Invoked OnReceivedPayloadData(). | 85 friend class VideoReceiverTest; // Invoked OnReceivedPayloadData(). |
| 86 | 86 |
| 87 virtual void OnReceivedPayloadData(const uint8* payload_data, | 87 virtual void OnReceivedPayloadData(const uint8* payload_data, |
| 88 size_t payload_size, | 88 size_t payload_size, |
| 89 const RtpCastHeader& rtp_header) OVERRIDE; | 89 const RtpCastHeader& rtp_header) OVERRIDE; |
| 90 | 90 |
| 91 // RtpPayloadFeedback implementation. | 91 // RtpPayloadFeedback implementation. |
| 92 virtual void CastFeedback(const RtcpCastMessage& cast_message) OVERRIDE; | 92 virtual void CastFeedback(const RtcpCastMessage& cast_message) OVERRIDE; |
| 93 | 93 |
| 94 private: | 94 private: |
| 95 // Processes ready-to-consume packets from |framer_|, decrypting each packet's | 95 // Processes ready-to-consume packets from |framer_|, decrypting each packet's |
| 96 // payload data, and then running the enqueued callbacks in order (one for | 96 // payload data, and then running the enqueued callbacks in order (one for |
| 97 // each packet). This method may post a delayed task to re-invoke itself in | 97 // each packet). This method may post a delayed task to re-invoke itself in |
| 98 // the future to wait for missing/incomplete frames. | 98 // the future to wait for missing/incomplete frames. |
| 99 void EmitAvailableEncodedFrames(); | 99 void EmitAvailableEncodedFrames(); |
| 100 | 100 |
| 101 // Clears the |is_waiting_for_consecutive_frame_| flag and invokes | 101 // Clears the |is_waiting_for_consecutive_frame_| flag and invokes |
| 102 // EmitAvailableEncodedFrames(). | 102 // EmitAvailableEncodedFrames(). |
| 103 void EmitAvailableEncodedFramesAfterWaiting(); | 103 void EmitAvailableEncodedFramesAfterWaiting(); |
| 104 | 104 |
| 105 // Feeds an EncodedVideoFrame into |video_decoder_|. GetRawVideoFrame() uses | 105 // Feeds an EncodedFrame into |video_decoder_|. GetRawVideoFrame() uses this |
| 106 // this as a callback for GetEncodedVideoFrame(). | 106 // as a callback for GetEncodedVideoFrame(). |
| 107 void DecodeEncodedVideoFrame( | 107 void DecodeEncodedVideoFrame( |
| 108 const VideoFrameDecodedCallback& callback, | 108 const VideoFrameDecodedCallback& callback, |
| 109 scoped_ptr<transport::EncodedVideoFrame> encoded_frame, | 109 scoped_ptr<transport::EncodedFrame> encoded_frame); |
| 110 const base::TimeTicks& playout_time); | |
| 111 | 110 |
| 112 // Return the playout time based on the current time and rtp timestamp. | 111 // Return the playout time based on the current time and rtp timestamp. |
| 113 base::TimeTicks GetPlayoutTime(base::TimeTicks now, uint32 rtp_timestamp); | 112 base::TimeTicks GetPlayoutTime(base::TimeTicks now, uint32 rtp_timestamp); |
| 114 | 113 |
| 115 void InitializeTimers(); | 114 void InitializeTimers(); |
| 116 | 115 |
| 117 // Schedule timing for the next cast message. | 116 // Schedule timing for the next cast message. |
| 118 void ScheduleNextCastMessage(); | 117 void ScheduleNextCastMessage(); |
| 119 | 118 |
| 120 // Schedule timing for the next RTCP report. | 119 // Schedule timing for the next RTCP report. |
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| 153 scoped_ptr<VideoDecoder> video_decoder_; | 152 scoped_ptr<VideoDecoder> video_decoder_; |
| 154 Rtcp rtcp_; | 153 Rtcp rtcp_; |
| 155 base::TimeDelta time_offset_; // Sender-receiver offset estimation. | 154 base::TimeDelta time_offset_; // Sender-receiver offset estimation. |
| 156 int time_offset_counter_; | 155 int time_offset_counter_; |
| 157 bool time_incoming_packet_updated_; | 156 bool time_incoming_packet_updated_; |
| 158 base::TimeTicks time_incoming_packet_; | 157 base::TimeTicks time_incoming_packet_; |
| 159 uint32 incoming_rtp_timestamp_; | 158 uint32 incoming_rtp_timestamp_; |
| 160 transport::TransportEncryptionHandler decryptor_; | 159 transport::TransportEncryptionHandler decryptor_; |
| 161 | 160 |
| 162 // Outstanding callbacks to run to deliver on client requests for frames. | 161 // Outstanding callbacks to run to deliver on client requests for frames. |
| 163 std::list<VideoFrameEncodedCallback> frame_request_queue_; | 162 std::list<FrameEncodedCallback> frame_request_queue_; |
| 164 | 163 |
| 165 // True while there's an outstanding task to re-invoke | 164 // True while there's an outstanding task to re-invoke |
| 166 // EmitAvailableEncodedFrames(). | 165 // EmitAvailableEncodedFrames(). |
| 167 bool is_waiting_for_consecutive_frame_; | 166 bool is_waiting_for_consecutive_frame_; |
| 168 | 167 |
| 169 // This mapping allows us to log FRAME_ACK_SENT as a frame event. In addition | 168 // This mapping allows us to log FRAME_ACK_SENT as a frame event. In addition |
| 170 // it allows the event to be transmitted via RTCP. | 169 // it allows the event to be transmitted via RTCP. |
| 171 RtpTimestamp frame_id_to_rtp_timestamp_[256]; | 170 RtpTimestamp frame_id_to_rtp_timestamp_[256]; |
| 172 | 171 |
| 173 // NOTE: Weak pointers must be invalidated before all other member variables. | 172 // NOTE: Weak pointers must be invalidated before all other member variables. |
| 174 base::WeakPtrFactory<VideoReceiver> weak_factory_; | 173 base::WeakPtrFactory<VideoReceiver> weak_factory_; |
| 175 | 174 |
| 176 DISALLOW_COPY_AND_ASSIGN(VideoReceiver); | 175 DISALLOW_COPY_AND_ASSIGN(VideoReceiver); |
| 177 }; | 176 }; |
| 178 | 177 |
| 179 } // namespace cast | 178 } // namespace cast |
| 180 } // namespace media | 179 } // namespace media |
| 181 | 180 |
| 182 #endif // MEDIA_CAST_VIDEO_RECEIVER_VIDEO_RECEIVER_H_ | 181 #endif // MEDIA_CAST_VIDEO_RECEIVER_VIDEO_RECEIVER_H_ |
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