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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 <windows.h> | 5 #include <windows.h> |
6 #include <mmsystem.h> | 6 #include <mmsystem.h> |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "base/environment.h" | 9 #include "base/environment.h" |
10 #include "base/files/file_util.h" | 10 #include "base/files/file_util.h" |
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45 static const size_t kFileDurationMs = 20000; | 45 static const size_t kFileDurationMs = 20000; |
46 static const size_t kNumFileSegments = 2; | 46 static const size_t kNumFileSegments = 2; |
47 static const int kBitsPerSample = 16; | 47 static const int kBitsPerSample = 16; |
48 static const size_t kMaxDeltaSamples = 1000; | 48 static const size_t kMaxDeltaSamples = 1000; |
49 static const char kDeltaTimeMsFileName[] = "delta_times_ms.txt"; | 49 static const char kDeltaTimeMsFileName[] = "delta_times_ms.txt"; |
50 | 50 |
51 MATCHER_P(HasValidDelay, value, "") { | 51 MATCHER_P(HasValidDelay, value, "") { |
52 // It is difficult to come up with a perfect test condition for the delay | 52 // It is difficult to come up with a perfect test condition for the delay |
53 // estimation. For now, verify that the produced output delay is always | 53 // estimation. For now, verify that the produced output delay is always |
54 // larger than the selected buffer size. | 54 // larger than the selected buffer size. |
55 return arg.hardware_delay_bytes >= value.hardware_delay_bytes; | 55 return arg >= value; |
56 } | 56 } |
57 | 57 |
58 // Used to terminate a loop from a different thread than the loop belongs to. | 58 // Used to terminate a loop from a different thread than the loop belongs to. |
59 // |loop| should be a MessageLoopProxy. | 59 // |loop| should be a MessageLoopProxy. |
60 ACTION_P(QuitLoop, loop) { | 60 ACTION_P(QuitLoop, loop) { |
61 loop->PostTask(FROM_HERE, base::MessageLoop::QuitClosure()); | 61 loop->PostTask(FROM_HERE, base::MessageLoop::QuitClosure()); |
62 } | 62 } |
63 | 63 |
64 // This audio source implementation should be used for manual tests only since | 64 // This audio source implementation should be used for manual tests only since |
65 // it takes about 20 seconds to play out a file. | 65 // it takes about 20 seconds to play out a file. |
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96 while (elements_written < elements_to_write_) { | 96 while (elements_written < elements_to_write_) { |
97 fprintf(text_file_, "%d\n", delta_times_[elements_written]); | 97 fprintf(text_file_, "%d\n", delta_times_[elements_written]); |
98 ++elements_written; | 98 ++elements_written; |
99 } | 99 } |
100 | 100 |
101 base::CloseFile(text_file_); | 101 base::CloseFile(text_file_); |
102 } | 102 } |
103 | 103 |
104 // AudioOutputStream::AudioSourceCallback implementation. | 104 // AudioOutputStream::AudioSourceCallback implementation. |
105 virtual int OnMoreData(AudioBus* audio_bus, | 105 virtual int OnMoreData(AudioBus* audio_bus, |
106 AudioBuffersState buffers_state) { | 106 uint32 total_bytes_delay) { |
107 // Store time difference between two successive callbacks in an array. | 107 // Store time difference between two successive callbacks in an array. |
108 // These values will be written to a file in the destructor. | 108 // These values will be written to a file in the destructor. |
109 const base::TimeTicks now_time = base::TimeTicks::Now(); | 109 const base::TimeTicks now_time = base::TimeTicks::Now(); |
110 const int diff = (now_time - previous_call_time_).InMilliseconds(); | 110 const int diff = (now_time - previous_call_time_).InMilliseconds(); |
111 previous_call_time_ = now_time; | 111 previous_call_time_ = now_time; |
112 if (elements_to_write_ < kMaxDeltaSamples) { | 112 if (elements_to_write_ < kMaxDeltaSamples) { |
113 delta_times_[elements_to_write_] = diff; | 113 delta_times_[elements_to_write_] = diff; |
114 ++elements_to_write_; | 114 ++elements_to_write_; |
115 } | 115 } |
116 | 116 |
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390 MockAudioSourceCallback source; | 390 MockAudioSourceCallback source; |
391 | 391 |
392 // Create default WASAPI output stream which plays out in stereo using | 392 // Create default WASAPI output stream which plays out in stereo using |
393 // the shared mixing rate. The default buffer size is 10ms. | 393 // the shared mixing rate. The default buffer size is 10ms. |
394 AudioOutputStreamWrapper aosw(audio_manager.get()); | 394 AudioOutputStreamWrapper aosw(audio_manager.get()); |
395 AudioOutputStream* aos = aosw.Create(); | 395 AudioOutputStream* aos = aosw.Create(); |
396 EXPECT_TRUE(aos->Open()); | 396 EXPECT_TRUE(aos->Open()); |
397 | 397 |
398 // Derive the expected size in bytes of each packet. | 398 // Derive the expected size in bytes of each packet. |
399 uint32 bytes_per_packet = aosw.channels() * aosw.samples_per_packet() * | 399 uint32 bytes_per_packet = aosw.channels() * aosw.samples_per_packet() * |
400 (aosw.bits_per_sample() / 8); | 400 (aosw.bits_per_sample() / 8); |
401 | |
402 // Set up expected minimum delay estimation. | |
403 AudioBuffersState state(0, bytes_per_packet); | |
404 | 401 |
405 // Wait for the first callback and verify its parameters. | 402 // Wait for the first callback and verify its parameters. |
406 EXPECT_CALL(source, OnMoreData(NotNull(), HasValidDelay(state))) | 403 EXPECT_CALL(source, OnMoreData(NotNull(), HasValidDelay(bytes_per_packet))) |
407 .WillOnce(DoAll( | 404 .WillOnce(DoAll( |
408 QuitLoop(loop.message_loop_proxy()), | 405 QuitLoop(loop.message_loop_proxy()), |
409 Return(aosw.samples_per_packet()))); | 406 Return(aosw.samples_per_packet()))); |
410 | 407 |
411 aos->Start(&source); | 408 aos->Start(&source); |
412 loop.PostDelayedTask(FROM_HERE, base::MessageLoop::QuitClosure(), | 409 loop.PostDelayedTask(FROM_HERE, base::MessageLoop::QuitClosure(), |
413 TestTimeouts::action_timeout()); | 410 TestTimeouts::action_timeout()); |
414 loop.Run(); | 411 loop.Run(); |
415 aos->Stop(); | 412 aos->Stop(); |
416 aos->Close(); | 413 aos->Close(); |
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596 // Create exclusive-mode WASAPI output stream which plays out in stereo | 593 // Create exclusive-mode WASAPI output stream which plays out in stereo |
597 // using the minimum buffer size at 48kHz sample rate. | 594 // using the minimum buffer size at 48kHz sample rate. |
598 AudioOutputStreamWrapper aosw(audio_manager.get()); | 595 AudioOutputStreamWrapper aosw(audio_manager.get()); |
599 AudioOutputStream* aos = aosw.Create(48000, 160); | 596 AudioOutputStream* aos = aosw.Create(48000, 160); |
600 EXPECT_TRUE(aos->Open()); | 597 EXPECT_TRUE(aos->Open()); |
601 | 598 |
602 // Derive the expected size in bytes of each packet. | 599 // Derive the expected size in bytes of each packet. |
603 uint32 bytes_per_packet = aosw.channels() * aosw.samples_per_packet() * | 600 uint32 bytes_per_packet = aosw.channels() * aosw.samples_per_packet() * |
604 (aosw.bits_per_sample() / 8); | 601 (aosw.bits_per_sample() / 8); |
605 | 602 |
606 // Set up expected minimum delay estimation. | |
607 AudioBuffersState state(0, bytes_per_packet); | |
608 | |
609 // Wait for the first callback and verify its parameters. | 603 // Wait for the first callback and verify its parameters. |
610 EXPECT_CALL(source, OnMoreData(NotNull(), HasValidDelay(state))) | 604 EXPECT_CALL(source, OnMoreData(NotNull(), HasValidDelay(bytes_per_packet))) |
611 .WillOnce(DoAll( | 605 .WillOnce(DoAll( |
612 QuitLoop(loop.message_loop_proxy()), | 606 QuitLoop(loop.message_loop_proxy()), |
613 Return(aosw.samples_per_packet()))) | 607 Return(aosw.samples_per_packet()))) |
614 .WillRepeatedly(Return(aosw.samples_per_packet())); | 608 .WillRepeatedly(Return(aosw.samples_per_packet())); |
615 | 609 |
616 aos->Start(&source); | 610 aos->Start(&source); |
617 loop.PostDelayedTask(FROM_HERE, base::MessageLoop::QuitClosure(), | 611 loop.PostDelayedTask(FROM_HERE, base::MessageLoop::QuitClosure(), |
618 TestTimeouts::action_timeout()); | 612 TestTimeouts::action_timeout()); |
619 loop.Run(); | 613 loop.Run(); |
620 aos->Stop(); | 614 aos->Stop(); |
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637 // Create exclusive-mode WASAPI output stream which plays out in stereo | 631 // Create exclusive-mode WASAPI output stream which plays out in stereo |
638 // using the minimum buffer size at 44.1kHz sample rate. | 632 // using the minimum buffer size at 44.1kHz sample rate. |
639 AudioOutputStreamWrapper aosw(audio_manager.get()); | 633 AudioOutputStreamWrapper aosw(audio_manager.get()); |
640 AudioOutputStream* aos = aosw.Create(44100, 160); | 634 AudioOutputStream* aos = aosw.Create(44100, 160); |
641 EXPECT_TRUE(aos->Open()); | 635 EXPECT_TRUE(aos->Open()); |
642 | 636 |
643 // Derive the expected size in bytes of each packet. | 637 // Derive the expected size in bytes of each packet. |
644 uint32 bytes_per_packet = aosw.channels() * aosw.samples_per_packet() * | 638 uint32 bytes_per_packet = aosw.channels() * aosw.samples_per_packet() * |
645 (aosw.bits_per_sample() / 8); | 639 (aosw.bits_per_sample() / 8); |
646 | 640 |
647 // Set up expected minimum delay estimation. | |
648 AudioBuffersState state(0, bytes_per_packet); | |
649 | |
650 // Wait for the first callback and verify its parameters. | 641 // Wait for the first callback and verify its parameters. |
651 EXPECT_CALL(source, OnMoreData(NotNull(), HasValidDelay(state))) | 642 EXPECT_CALL(source, OnMoreData(NotNull(), HasValidDelay(bytes_per_packet))) |
652 .WillOnce(DoAll( | 643 .WillOnce(DoAll( |
653 QuitLoop(loop.message_loop_proxy()), | 644 QuitLoop(loop.message_loop_proxy()), |
654 Return(aosw.samples_per_packet()))) | 645 Return(aosw.samples_per_packet()))) |
655 .WillRepeatedly(Return(aosw.samples_per_packet())); | 646 .WillRepeatedly(Return(aosw.samples_per_packet())); |
656 | 647 |
657 aos->Start(&source); | 648 aos->Start(&source); |
658 loop.PostDelayedTask(FROM_HERE, base::MessageLoop::QuitClosure(), | 649 loop.PostDelayedTask(FROM_HERE, base::MessageLoop::QuitClosure(), |
659 TestTimeouts::action_timeout()); | 650 TestTimeouts::action_timeout()); |
660 loop.Run(); | 651 loop.Run(); |
661 aos->Stop(); | 652 aos->Stop(); |
662 aos->Close(); | 653 aos->Close(); |
663 } | 654 } |
664 | 655 |
665 } // namespace media | 656 } // namespace media |
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