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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 #include "media/cast/video_sender/video_sender.h" | 5 #include "media/cast/video_sender/video_sender.h" |
6 | 6 |
7 #include <list> | 7 #include <list> |
8 | 8 |
9 #include "base/bind.h" | 9 #include "base/bind.h" |
10 #include "base/logging.h" | 10 #include "base/logging.h" |
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52 scoped_refptr<CastEnvironment> cast_environment, | 52 scoped_refptr<CastEnvironment> cast_environment, |
53 const VideoSenderConfig& video_config, | 53 const VideoSenderConfig& video_config, |
54 VideoEncoderController* const video_encoder_controller, | 54 VideoEncoderController* const video_encoder_controller, |
55 PacedPacketSender* const paced_packet_sender) | 55 PacedPacketSender* const paced_packet_sender) |
56 : incoming_feedback_ssrc_(video_config.incoming_feedback_ssrc), | 56 : incoming_feedback_ssrc_(video_config.incoming_feedback_ssrc), |
57 rtp_max_delay_( | 57 rtp_max_delay_( |
58 base::TimeDelta::FromMilliseconds(video_config.rtp_max_delay_ms)), | 58 base::TimeDelta::FromMilliseconds(video_config.rtp_max_delay_ms)), |
59 max_frame_rate_(video_config.max_frame_rate), | 59 max_frame_rate_(video_config.max_frame_rate), |
60 cast_environment_(cast_environment), | 60 cast_environment_(cast_environment), |
61 rtcp_feedback_(new LocalRtcpVideoSenderFeedback(this)), | 61 rtcp_feedback_(new LocalRtcpVideoSenderFeedback(this)), |
62 rtp_sender_(new RtpSender(cast_environment->Clock(), NULL, &video_config, | 62 rtp_sender_(new RtpSender(cast_environment, NULL, &video_config, |
63 paced_packet_sender)), | 63 paced_packet_sender)), |
64 last_acked_frame_id_(-1), | 64 last_acked_frame_id_(-1), |
65 last_sent_frame_id_(-1), | 65 last_sent_frame_id_(-1), |
66 last_sent_key_frame_id_(-1), | 66 last_sent_key_frame_id_(-1), |
67 duplicate_ack_(0), | 67 duplicate_ack_(0), |
68 last_skip_count_(0), | 68 last_skip_count_(0), |
69 congestion_control_(cast_environment->Clock(), | 69 congestion_control_(cast_environment->Clock(), |
70 video_config.congestion_control_back_off, | 70 video_config.congestion_control_back_off, |
71 video_config.max_bitrate, | 71 video_config.max_bitrate, |
72 video_config.min_bitrate, | 72 video_config.min_bitrate, |
73 video_config.start_bitrate), | 73 video_config.start_bitrate), |
74 weak_factory_(this) { | 74 weak_factory_(this) { |
75 max_unacked_frames_ = static_cast<uint8>(video_config.rtp_max_delay_ms * | 75 max_unacked_frames_ = static_cast<uint8>(video_config.rtp_max_delay_ms * |
76 video_config.max_frame_rate / 1000) + 1; | 76 video_config.max_frame_rate / 1000) + 1; |
77 VLOG(1) << "max_unacked_frames " << static_cast<int>(max_unacked_frames_); | 77 VLOG(1) << "max_unacked_frames " << static_cast<int>(max_unacked_frames_); |
78 DCHECK_GT(max_unacked_frames_, 0) << "Invalid argument"; | 78 DCHECK_GT(max_unacked_frames_, 0) << "Invalid argument"; |
79 | 79 |
80 rtp_video_sender_statistics_.reset( | 80 rtp_video_sender_statistics_.reset( |
81 new LocalRtpVideoSenderStatistics(rtp_sender_.get())); | 81 new LocalRtpVideoSenderStatistics(rtp_sender_.get())); |
82 | 82 |
83 if (video_config.use_external_encoder) { | 83 if (video_config.use_external_encoder) { |
84 DCHECK(video_encoder_controller) << "Invalid argument"; | 84 DCHECK(video_encoder_controller) << "Invalid argument"; |
85 video_encoder_controller_ = video_encoder_controller; | 85 video_encoder_controller_ = video_encoder_controller; |
86 } else { | 86 } else { |
87 video_encoder_ = new VideoEncoder(cast_environment, video_config, | 87 video_encoder_ = new VideoEncoder(cast_environment, video_config, |
88 max_unacked_frames_); | 88 max_unacked_frames_); |
89 video_encoder_controller_ = video_encoder_.get(); | 89 video_encoder_controller_ = video_encoder_.get(); |
90 } | 90 } |
91 rtcp_.reset(new Rtcp( | 91 rtcp_.reset(new Rtcp( |
92 cast_environment_->Clock(), | 92 cast_environment_, |
93 rtcp_feedback_.get(), | 93 rtcp_feedback_.get(), |
94 paced_packet_sender, | 94 paced_packet_sender, |
95 rtp_video_sender_statistics_.get(), | 95 rtp_video_sender_statistics_.get(), |
96 NULL, | 96 NULL, |
97 video_config.rtcp_mode, | 97 video_config.rtcp_mode, |
98 base::TimeDelta::FromMilliseconds(video_config.rtcp_interval), | 98 base::TimeDelta::FromMilliseconds(video_config.rtcp_interval), |
99 true, | 99 true, |
100 video_config.sender_ssrc, | 100 video_config.sender_ssrc, |
101 video_config.rtcp_c_name)); | 101 video_config.rtcp_c_name)); |
102 | 102 |
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242 ScheduleNextSkippedFramesCheck(); | 242 ScheduleNextSkippedFramesCheck(); |
243 } | 243 } |
244 | 244 |
245 void VideoSender::OnReceivedCastFeedback(const RtcpCastMessage& cast_feedback) { | 245 void VideoSender::OnReceivedCastFeedback(const RtcpCastMessage& cast_feedback) { |
246 base::TimeDelta rtt; | 246 base::TimeDelta rtt; |
247 base::TimeDelta avg_rtt; | 247 base::TimeDelta avg_rtt; |
248 base::TimeDelta min_rtt; | 248 base::TimeDelta min_rtt; |
249 base::TimeDelta max_rtt; | 249 base::TimeDelta max_rtt; |
250 | 250 |
251 if (rtcp_->Rtt(&rtt, &avg_rtt, &min_rtt, &max_rtt)) { | 251 if (rtcp_->Rtt(&rtt, &avg_rtt, &min_rtt, &max_rtt)) { |
| 252 cast_environment_->Logging()->InsertGenericEvent(kRttMs, |
| 253 rtt.InMilliseconds()); |
252 // Don't use a RTT lower than our average. | 254 // Don't use a RTT lower than our average. |
253 rtt = std::max(rtt, avg_rtt); | 255 rtt = std::max(rtt, avg_rtt); |
254 } else { | 256 } else { |
255 // We have no measured value use default. | 257 // We have no measured value use default. |
256 rtt = base::TimeDelta::FromMilliseconds(kStartRttMs); | 258 rtt = base::TimeDelta::FromMilliseconds(kStartRttMs); |
257 } | 259 } |
258 if (cast_feedback.missing_frames_and_packets_.empty()) { | 260 if (cast_feedback.missing_frames_and_packets_.empty()) { |
259 // No lost packets. | 261 // No lost packets. |
260 int resend_frame = -1; | 262 int resend_frame = -1; |
261 if (last_sent_frame_id_ == -1) return; | 263 if (last_sent_frame_id_ == -1) return; |
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294 | 296 |
295 uint32 new_bitrate = 0; | 297 uint32 new_bitrate = 0; |
296 if (congestion_control_.OnNack(rtt, &new_bitrate)) { | 298 if (congestion_control_.OnNack(rtt, &new_bitrate)) { |
297 video_encoder_controller_->SetBitRate(new_bitrate); | 299 video_encoder_controller_->SetBitRate(new_bitrate); |
298 } | 300 } |
299 } | 301 } |
300 ReceivedAck(cast_feedback.ack_frame_id_); | 302 ReceivedAck(cast_feedback.ack_frame_id_); |
301 } | 303 } |
302 | 304 |
303 void VideoSender::ReceivedAck(uint8 acked_frame_id) { | 305 void VideoSender::ReceivedAck(uint8 acked_frame_id) { |
| 306 cast_environment_->Logging()->InsertGenericEvent(kAckReceived, |
| 307 acked_frame_id); |
304 VLOG(1) << "ReceivedAck:" << static_cast<int>(acked_frame_id); | 308 VLOG(1) << "ReceivedAck:" << static_cast<int>(acked_frame_id); |
305 last_acked_frame_id_ = acked_frame_id; | 309 last_acked_frame_id_ = acked_frame_id; |
306 UpdateFramesInFlight(); | 310 UpdateFramesInFlight(); |
307 } | 311 } |
308 | 312 |
309 void VideoSender::UpdateFramesInFlight() { | 313 void VideoSender::UpdateFramesInFlight() { |
310 if (last_sent_frame_id_ != -1) { | 314 if (last_sent_frame_id_ != -1) { |
311 DCHECK_GE(255, last_sent_frame_id_); | 315 DCHECK_GE(255, last_sent_frame_id_); |
312 DCHECK_LE(0, last_sent_frame_id_); | 316 DCHECK_LE(0, last_sent_frame_id_); |
313 uint8 frames_in_flight; | 317 uint8 frames_in_flight; |
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332 void VideoSender::ResendFrame(uint8 resend_frame_id) { | 336 void VideoSender::ResendFrame(uint8 resend_frame_id) { |
333 MissingFramesAndPacketsMap missing_frames_and_packets; | 337 MissingFramesAndPacketsMap missing_frames_and_packets; |
334 PacketIdSet missing; | 338 PacketIdSet missing; |
335 missing_frames_and_packets.insert(std::make_pair(resend_frame_id, missing)); | 339 missing_frames_and_packets.insert(std::make_pair(resend_frame_id, missing)); |
336 rtp_sender_->ResendPackets(missing_frames_and_packets); | 340 rtp_sender_->ResendPackets(missing_frames_and_packets); |
337 last_send_time_ = cast_environment_->Clock()->NowTicks(); | 341 last_send_time_ = cast_environment_->Clock()->NowTicks(); |
338 } | 342 } |
339 | 343 |
340 } // namespace cast | 344 } // namespace cast |
341 } // namespace media | 345 } // namespace media |
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