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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 program benchmarks the theoretical throughput of the cast library. | 5 // This program benchmarks the theoretical throughput of the cast library. |
6 // It runs using a fake clock, simulated network and fake codecs. This allows | 6 // It runs using a fake clock, simulated network and fake codecs. This allows |
7 // tests to run much faster than real time. | 7 // tests to run much faster than real time. |
8 // To run the program, run: | 8 // To run the program, run: |
9 // $ ./out/Release/cast_benchmarks | tee benchmarkoutput.asc | 9 // $ ./out/Release/cast_benchmarks | tee benchmarkoutput.asc |
10 // This may take a while, when it is done, you can view the data with | 10 // This may take a while, when it is done, you can view the data with |
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251 base::TimeDelta::FromMilliseconds(kTargetPlayoutDelayMs); | 251 base::TimeDelta::FromMilliseconds(kTargetPlayoutDelayMs); |
252 video_sender_config_.max_bitrate = 4000000; | 252 video_sender_config_.max_bitrate = 4000000; |
253 video_sender_config_.min_bitrate = 4000000; | 253 video_sender_config_.min_bitrate = 4000000; |
254 video_sender_config_.start_bitrate = 4000000; | 254 video_sender_config_.start_bitrate = 4000000; |
255 video_sender_config_.codec = video_codec; | 255 video_sender_config_.codec = video_codec; |
256 | 256 |
257 video_receiver_config_ = GetDefaultVideoReceiverConfig(); | 257 video_receiver_config_ = GetDefaultVideoReceiverConfig(); |
258 video_receiver_config_.rtp_max_delay_ms = kTargetPlayoutDelayMs; | 258 video_receiver_config_.rtp_max_delay_ms = kTargetPlayoutDelayMs; |
259 video_receiver_config_.codec = video_codec; | 259 video_receiver_config_.codec = video_codec; |
260 | 260 |
261 DCHECK_GT(video_sender_config_.max_frame_rate, 0); | 261 frame_duration_ = base::TimeDelta::FromSeconds(1) / |
262 frame_duration_ = base::TimeDelta::FromSecondsD( | 262 video_sender_config_.max_frame_rate; |
263 1.0 / video_sender_config_.max_frame_rate); | |
264 } | 263 } |
265 | 264 |
266 void SetSenderClockSkew(double skew, base::TimeDelta offset) { | 265 void SetSenderClockSkew(double skew, base::TimeDelta offset) { |
267 testing_clock_sender_->SetSkew(skew, offset); | 266 testing_clock_sender_->SetSkew(skew, offset); |
268 task_runner_sender_->SetSkew(1.0 / skew); | 267 task_runner_sender_->SetSkew(1.0 / skew); |
269 } | 268 } |
270 | 269 |
271 void SetReceiverClockSkew(double skew, base::TimeDelta offset) { | 270 void SetReceiverClockSkew(double skew, base::TimeDelta offset) { |
272 testing_clock_receiver_->SetSkew(skew, offset); | 271 testing_clock_receiver_->SetSkew(skew, offset); |
273 task_runner_receiver_->SetSkew(1.0 / skew); | 272 task_runner_receiver_->SetSkew(1.0 / skew); |
274 } | 273 } |
275 | 274 |
276 void Create(const MeasuringPoint& p); | 275 void Create(const MeasuringPoint& p); |
277 | 276 |
278 void ReceivePacket(std::unique_ptr<Packet> packet) { | 277 void ReceivePacket(std::unique_ptr<Packet> packet) { |
279 cast_receiver_->ReceivePacket(std::move(packet)); | 278 cast_receiver_->ReceivePacket(std::move(packet)); |
280 } | 279 } |
281 | 280 |
282 virtual ~RunOneBenchmark() { | 281 virtual ~RunOneBenchmark() { |
283 cast_sender_.reset(); | 282 cast_sender_.reset(); |
284 cast_receiver_.reset(); | 283 cast_receiver_.reset(); |
285 task_runner_->RunTasks(); | 284 task_runner_->RunTasks(); |
286 } | 285 } |
287 | 286 |
288 base::TimeDelta VideoTimestamp(int frame_number) { | 287 base::TimeDelta VideoTimestamp(int frame_number) { |
289 return frame_number * base::TimeDelta::FromSecondsD( | 288 return (frame_number * base::TimeDelta::FromSeconds(1)) / |
290 1.0 / video_sender_config_.max_frame_rate); | 289 video_sender_config_.max_frame_rate; |
291 } | 290 } |
292 | 291 |
293 void SendFakeVideoFrame() { | 292 void SendFakeVideoFrame() { |
294 // NB: Blackframe with timestamp | 293 // NB: Blackframe with timestamp |
295 cast_sender_->video_frame_input()->InsertRawVideoFrame( | 294 cast_sender_->video_frame_input()->InsertRawVideoFrame( |
296 media::VideoFrame::CreateColorFrame(gfx::Size(2, 2), | 295 media::VideoFrame::CreateColorFrame(gfx::Size(2, 2), |
297 0x00, 0x80, 0x80, VideoTimestamp(frames_sent_)), | 296 0x00, 0x80, 0x80, VideoTimestamp(frames_sent_)), |
298 testing_clock_sender_->NowTicks()); | 297 testing_clock_sender_->NowTicks()); |
299 frames_sent_++; | 298 frames_sent_++; |
300 } | 299 } |
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404 | 403 |
405 bool SimpleGood() { | 404 bool SimpleGood() { |
406 return frames_lost() <= 1 && late_frames() <= 1 && | 405 return frames_lost() <= 1 && late_frames() <= 1 && |
407 video_bandwidth() > desired_video_bitrate() * 0.8 && | 406 video_bandwidth() > desired_video_bitrate() * 0.8 && |
408 video_bandwidth() < desired_video_bitrate() * 1.2; | 407 video_bandwidth() < desired_video_bitrate() * 1.2; |
409 } | 408 } |
410 | 409 |
411 private: | 410 private: |
412 FrameReceiverConfig audio_receiver_config_; | 411 FrameReceiverConfig audio_receiver_config_; |
413 FrameReceiverConfig video_receiver_config_; | 412 FrameReceiverConfig video_receiver_config_; |
414 FrameSenderConfig audio_sender_config_; | 413 AudioSenderConfig audio_sender_config_; |
415 FrameSenderConfig video_sender_config_; | 414 VideoSenderConfig video_sender_config_; |
416 | 415 |
417 base::TimeTicks start_time_; | 416 base::TimeTicks start_time_; |
418 | 417 |
419 // These run in "test time" | 418 // These run in "test time" |
420 base::SimpleTestTickClock testing_clock_; | 419 base::SimpleTestTickClock testing_clock_; |
421 scoped_refptr<FakeSingleThreadTaskRunner> task_runner_; | 420 scoped_refptr<FakeSingleThreadTaskRunner> task_runner_; |
422 | 421 |
423 // These run on the sender timeline. | 422 // These run on the sender timeline. |
424 test::SkewedTickClock* testing_clock_sender_; | 423 test::SkewedTickClock* testing_clock_sender_; |
425 scoped_refptr<test::SkewedSingleThreadTaskRunner> task_runner_sender_; | 424 scoped_refptr<test::SkewedSingleThreadTaskRunner> task_runner_sender_; |
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728 media::cast::CastBenchmark benchmark; | 727 media::cast::CastBenchmark benchmark; |
729 if (getenv("PROFILE_FILE")) { | 728 if (getenv("PROFILE_FILE")) { |
730 std::string profile_file(getenv("PROFILE_FILE")); | 729 std::string profile_file(getenv("PROFILE_FILE")); |
731 base::debug::StartProfiling(profile_file); | 730 base::debug::StartProfiling(profile_file); |
732 benchmark.Run(); | 731 benchmark.Run(); |
733 base::debug::StopProfiling(); | 732 base::debug::StopProfiling(); |
734 } else { | 733 } else { |
735 benchmark.Run(); | 734 benchmark.Run(); |
736 } | 735 } |
737 } | 736 } |
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