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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 "remoting/host/screen_recorder.h" | 5 #include "remoting/host/screen_recorder.h" |
| 6 | 6 |
| 7 #include <algorithm> | 7 #include <algorithm> |
| 8 | 8 |
| 9 #include "base/logging.h" | 9 #include "base/logging.h" |
| 10 #include "base/memory/scoped_ptr.h" | 10 #include "base/memory/scoped_ptr.h" |
| 11 #include "base/message_loop_proxy.h" |
| 11 #include "base/stl_util.h" | 12 #include "base/stl_util.h" |
| 12 #include "base/task.h" | 13 #include "base/task.h" |
| 13 #include "base/time.h" | 14 #include "base/time.h" |
| 14 #include "remoting/base/capture_data.h" | 15 #include "remoting/base/capture_data.h" |
| 15 #include "remoting/base/tracer.h" | 16 #include "remoting/base/tracer.h" |
| 16 #include "remoting/proto/control.pb.h" | 17 #include "remoting/proto/control.pb.h" |
| 17 #include "remoting/proto/video.pb.h" | 18 #include "remoting/proto/video.pb.h" |
| 18 #include "remoting/protocol/client_stub.h" | 19 #include "remoting/protocol/client_stub.h" |
| 19 #include "remoting/protocol/connection_to_client.h" | 20 #include "remoting/protocol/connection_to_client.h" |
| 20 #include "remoting/protocol/message_decoder.h" | 21 #include "remoting/protocol/message_decoder.h" |
| 21 #include "remoting/protocol/util.h" | 22 #include "remoting/protocol/util.h" |
| 22 | 23 |
| 23 using remoting::protocol::ConnectionToClient; | 24 using remoting::protocol::ConnectionToClient; |
| 24 | 25 |
| 25 namespace remoting { | 26 namespace remoting { |
| 26 | 27 |
| 27 // By default we capture 20 times a second. This number is obtained by | 28 // By default we capture 20 times a second. This number is obtained by |
| 28 // experiment to provide good latency. | 29 // experiment to provide good latency. |
| 29 static const double kDefaultCaptureRate = 20.0; | 30 static const double kDefaultCaptureRate = 20.0; |
| 30 | 31 |
| 31 // Maximum number of frames that can be processed similtaneously. | 32 // Maximum number of frames that can be processed similtaneously. |
| 32 // TODO(sergeyu): Should this be set to 1? Or should we change | 33 // TODO(sergeyu): Should this be set to 1? Or should we change |
| 33 // dynamically depending on how fast network and CPU are? Experement | 34 // dynamically depending on how fast network and CPU are? Experement |
| 34 // with it. | 35 // with it. |
| 35 static const int kMaxRecordings = 2; | 36 static const int kMaxRecordings = 2; |
| 36 | 37 |
| 37 ScreenRecorder::ScreenRecorder( | 38 ScreenRecorder::ScreenRecorder( |
| 38 MessageLoop* capture_loop, | 39 MessageLoop* capture_loop, |
| 39 MessageLoop* encode_loop, | 40 MessageLoop* encode_loop, |
| 40 MessageLoop* network_loop, | 41 base::MessageLoopProxy* network_loop, |
| 41 Capturer* capturer, | 42 Capturer* capturer, |
| 42 Encoder* encoder) | 43 Encoder* encoder) |
| 43 : capture_loop_(capture_loop), | 44 : capture_loop_(capture_loop), |
| 44 encode_loop_(encode_loop), | 45 encode_loop_(encode_loop), |
| 45 network_loop_(network_loop), | 46 network_loop_(network_loop), |
| 46 capturer_(capturer), | 47 capturer_(capturer), |
| 47 encoder_(encoder), | 48 encoder_(encoder), |
| 48 is_recording_(false), | 49 is_recording_(false), |
| 49 network_stopped_(false), | 50 network_stopped_(false), |
| 50 encoder_stopped_(false), | 51 encoder_stopped_(false), |
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| 267 | 268 |
| 268 void ScreenRecorder::DoInvalidateFullScreen() { | 269 void ScreenRecorder::DoInvalidateFullScreen() { |
| 269 DCHECK_EQ(capture_loop_, MessageLoop::current()); | 270 DCHECK_EQ(capture_loop_, MessageLoop::current()); |
| 270 | 271 |
| 271 capturer_->InvalidateFullScreen(); | 272 capturer_->InvalidateFullScreen(); |
| 272 } | 273 } |
| 273 | 274 |
| 274 // Network thread -------------------------------------------------------------- | 275 // Network thread -------------------------------------------------------------- |
| 275 | 276 |
| 276 void ScreenRecorder::DoSendVideoPacket(VideoPacket* packet) { | 277 void ScreenRecorder::DoSendVideoPacket(VideoPacket* packet) { |
| 277 DCHECK_EQ(network_loop_, MessageLoop::current()); | 278 DCHECK(network_loop_->BelongsToCurrentThread()); |
| 278 | 279 |
| 279 TraceContext::tracer()->PrintString("DoSendVideoPacket"); | 280 TraceContext::tracer()->PrintString("DoSendVideoPacket"); |
| 280 | 281 |
| 281 bool last = (packet->flags() & VideoPacket::LAST_PARTITION) != 0; | 282 bool last = (packet->flags() & VideoPacket::LAST_PARTITION) != 0; |
| 282 | 283 |
| 283 if (network_stopped_ || connections_.empty()) { | 284 if (network_stopped_ || connections_.empty()) { |
| 284 delete packet; | 285 delete packet; |
| 285 return; | 286 return; |
| 286 } | 287 } |
| 287 | 288 |
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| 311 | 312 |
| 312 if (network_stopped_) | 313 if (network_stopped_) |
| 313 return; | 314 return; |
| 314 | 315 |
| 315 capture_loop_->PostTask( | 316 capture_loop_->PostTask( |
| 316 FROM_HERE, NewTracedMethod(this, &ScreenRecorder::DoFinishOneRecording)); | 317 FROM_HERE, NewTracedMethod(this, &ScreenRecorder::DoFinishOneRecording)); |
| 317 } | 318 } |
| 318 | 319 |
| 319 void ScreenRecorder::DoAddConnection( | 320 void ScreenRecorder::DoAddConnection( |
| 320 scoped_refptr<ConnectionToClient> connection) { | 321 scoped_refptr<ConnectionToClient> connection) { |
| 321 DCHECK_EQ(network_loop_, MessageLoop::current()); | 322 DCHECK(network_loop_->BelongsToCurrentThread()); |
| 322 | 323 |
| 323 connections_.push_back(connection); | 324 connections_.push_back(connection); |
| 324 } | 325 } |
| 325 | 326 |
| 326 void ScreenRecorder::DoRemoveClient( | 327 void ScreenRecorder::DoRemoveClient( |
| 327 scoped_refptr<ConnectionToClient> connection) { | 328 scoped_refptr<ConnectionToClient> connection) { |
| 328 DCHECK_EQ(network_loop_, MessageLoop::current()); | 329 DCHECK(network_loop_->BelongsToCurrentThread()); |
| 329 | 330 |
| 330 ConnectionToClientList::iterator it = | 331 ConnectionToClientList::iterator it = |
| 331 std::find(connections_.begin(), connections_.end(), connection); | 332 std::find(connections_.begin(), connections_.end(), connection); |
| 332 if (it != connections_.end()) { | 333 if (it != connections_.end()) { |
| 333 connections_.erase(it); | 334 connections_.erase(it); |
| 334 } | 335 } |
| 335 } | 336 } |
| 336 | 337 |
| 337 void ScreenRecorder::DoRemoveAllClients() { | 338 void ScreenRecorder::DoRemoveAllClients() { |
| 338 DCHECK_EQ(network_loop_, MessageLoop::current()); | 339 DCHECK(network_loop_->BelongsToCurrentThread()); |
| 339 | 340 |
| 340 // Clear the list of connections. | 341 // Clear the list of connections. |
| 341 connections_.clear(); | 342 connections_.clear(); |
| 342 } | 343 } |
| 343 | 344 |
| 344 void ScreenRecorder::DoStopOnNetworkThread(Task* done_task) { | 345 void ScreenRecorder::DoStopOnNetworkThread(Task* done_task) { |
| 345 DCHECK_EQ(network_loop_, MessageLoop::current()); | 346 DCHECK(network_loop_->BelongsToCurrentThread()); |
| 346 | 347 |
| 347 // There could be tasks on the network thread when this method is being | 348 // There could be tasks on the network thread when this method is being |
| 348 // executed. By setting the flag we'll not post anymore tasks from network | 349 // executed. By setting the flag we'll not post anymore tasks from network |
| 349 // thread. | 350 // thread. |
| 350 // | 351 // |
| 351 // After that a task is posted on encode thread to continue the stop | 352 // After that a task is posted on encode thread to continue the stop |
| 352 // sequence. | 353 // sequence. |
| 353 network_stopped_ = true; | 354 network_stopped_ = true; |
| 354 | 355 |
| 355 encode_loop_->PostTask( | 356 encode_loop_->PostTask( |
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| 409 (base::Time::Now() - encode_start_time_).InMilliseconds()); | 410 (base::Time::Now() - encode_start_time_).InMilliseconds()); |
| 410 packet->set_encode_time_ms(encode_time); | 411 packet->set_encode_time_ms(encode_time); |
| 411 } | 412 } |
| 412 | 413 |
| 413 network_loop_->PostTask( | 414 network_loop_->PostTask( |
| 414 FROM_HERE, | 415 FROM_HERE, |
| 415 NewTracedMethod(this, &ScreenRecorder::DoSendVideoPacket, packet)); | 416 NewTracedMethod(this, &ScreenRecorder::DoSendVideoPacket, packet)); |
| 416 } | 417 } |
| 417 | 418 |
| 418 } // namespace remoting | 419 } // namespace remoting |
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