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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 "media/renderers/audio_renderer_impl.h" | 5 #include "media/renderers/audio_renderer_impl.h" |
6 | 6 |
7 #include <memory> | 7 #include <memory> |
8 #include <utility> | 8 #include <utility> |
9 | 9 |
10 #include "base/bind.h" | 10 #include "base/bind.h" |
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310 void DeliverRemainingAudio() { | 310 void DeliverRemainingAudio() { |
311 while (frames_remaining_in_buffer().value > 0) { | 311 while (frames_remaining_in_buffer().value > 0) { |
312 SatisfyPendingRead(InputFrames(256)); | 312 SatisfyPendingRead(InputFrames(256)); |
313 } | 313 } |
314 } | 314 } |
315 | 315 |
316 // Attempts to consume |requested_frames| frames from |renderer_|'s internal | 316 // Attempts to consume |requested_frames| frames from |renderer_|'s internal |
317 // buffer. Returns true if and only if all of |requested_frames| were able | 317 // buffer. Returns true if and only if all of |requested_frames| were able |
318 // to be consumed. | 318 // to be consumed. |
319 bool ConsumeBufferedData(OutputFrames requested_frames, | 319 bool ConsumeBufferedData(OutputFrames requested_frames, |
320 uint32_t frames_delayed) { | 320 base::TimeDelta delay) { |
321 std::unique_ptr<AudioBus> bus = | 321 std::unique_ptr<AudioBus> bus = |
322 AudioBus::Create(kChannels, requested_frames.value); | 322 AudioBus::Create(kChannels, requested_frames.value); |
323 int frames_read = 0; | 323 int frames_read = 0; |
324 EXPECT_TRUE(sink_->Render(bus.get(), frames_delayed, &frames_read)); | 324 EXPECT_TRUE(sink_->Render(bus.get(), delay, &frames_read)); |
325 return frames_read == requested_frames.value; | 325 return frames_read == requested_frames.value; |
326 } | 326 } |
327 | 327 |
328 bool ConsumeBufferedData(OutputFrames requested_frames) { | 328 bool ConsumeBufferedData(OutputFrames requested_frames) { |
329 return ConsumeBufferedData(requested_frames, 0); | 329 return ConsumeBufferedData(requested_frames, base::TimeDelta()); |
330 } | 330 } |
331 | 331 |
332 base::TimeTicks ConvertMediaTime(base::TimeDelta timestamp, | 332 base::TimeTicks ConvertMediaTime(base::TimeDelta timestamp, |
333 bool* is_time_moving) { | 333 bool* is_time_moving) { |
334 std::vector<base::TimeTicks> wall_clock_times; | 334 std::vector<base::TimeTicks> wall_clock_times; |
335 *is_time_moving = renderer_->GetWallClockTimes( | 335 *is_time_moving = renderer_->GetWallClockTimes( |
336 std::vector<base::TimeDelta>(1, timestamp), &wall_clock_times); | 336 std::vector<base::TimeDelta>(1, timestamp), &wall_clock_times); |
337 return wall_clock_times[0]; | 337 return wall_clock_times[0]; |
338 } | 338 } |
339 | 339 |
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768 base::TimeDelta::FromSecondsD(hardware_params_.frames_per_buffer() * | 768 base::TimeDelta::FromSecondsD(hardware_params_.frames_per_buffer() * |
769 kBuffers / hardware_params_.sample_rate()); | 769 kBuffers / hardware_params_.sample_rate()); |
770 | 770 |
771 Preroll(base::TimeDelta(), first_timestamp, PIPELINE_OK); | 771 Preroll(base::TimeDelta(), first_timestamp, PIPELINE_OK); |
772 StartTicking(); | 772 StartTicking(); |
773 | 773 |
774 // Verify the first few buffers are silent. | 774 // Verify the first few buffers are silent. |
775 std::unique_ptr<AudioBus> bus = AudioBus::Create(hardware_params_); | 775 std::unique_ptr<AudioBus> bus = AudioBus::Create(hardware_params_); |
776 int frames_read = 0; | 776 int frames_read = 0; |
777 for (int i = 0; i < std::floor(kBuffers); ++i) { | 777 for (int i = 0; i < std::floor(kBuffers); ++i) { |
778 EXPECT_TRUE(sink_->Render(bus.get(), 0, &frames_read)); | 778 EXPECT_TRUE(sink_->Render(bus.get(), base::TimeDelta(), &frames_read)); |
779 EXPECT_EQ(frames_read, bus->frames()); | 779 EXPECT_EQ(frames_read, bus->frames()); |
780 for (int j = 0; j < bus->frames(); ++j) | 780 for (int j = 0; j < bus->frames(); ++j) |
781 ASSERT_FLOAT_EQ(0.0f, bus->channel(0)[j]); | 781 ASSERT_FLOAT_EQ(0.0f, bus->channel(0)[j]); |
782 WaitForPendingRead(); | 782 WaitForPendingRead(); |
783 DeliverRemainingAudio(); | 783 DeliverRemainingAudio(); |
784 } | 784 } |
785 | 785 |
786 // Verify the last buffer is half silence and half real data. | 786 // Verify the last buffer is half silence and half real data. |
787 EXPECT_TRUE(sink_->Render(bus.get(), 0, &frames_read)); | 787 EXPECT_TRUE(sink_->Render(bus.get(), base::TimeDelta(), &frames_read)); |
788 EXPECT_EQ(frames_read, bus->frames()); | 788 EXPECT_EQ(frames_read, bus->frames()); |
789 const int zero_frames = | 789 const int zero_frames = |
790 bus->frames() * (kBuffers - static_cast<int>(kBuffers)); | 790 bus->frames() * (kBuffers - static_cast<int>(kBuffers)); |
791 | 791 |
792 for (int i = 0; i < zero_frames; ++i) | 792 for (int i = 0; i < zero_frames; ++i) |
793 ASSERT_FLOAT_EQ(0.0f, bus->channel(0)[i]); | 793 ASSERT_FLOAT_EQ(0.0f, bus->channel(0)[i]); |
794 for (int i = zero_frames; i < bus->frames(); ++i) | 794 for (int i = zero_frames; i < bus->frames(); ++i) |
795 ASSERT_NE(0.0f, bus->channel(0)[i]); | 795 ASSERT_NE(0.0f, bus->channel(0)[i]); |
796 } | 796 } |
797 | 797 |
798 TEST_F(AudioRendererImplTest, RenderingDelayedForSuspend) { | 798 TEST_F(AudioRendererImplTest, RenderingDelayedForSuspend) { |
799 Initialize(); | 799 Initialize(); |
800 Preroll(base::TimeDelta(), base::TimeDelta(), PIPELINE_OK); | 800 Preroll(base::TimeDelta(), base::TimeDelta(), PIPELINE_OK); |
801 StartTicking(); | 801 StartTicking(); |
802 | 802 |
803 // Verify the first buffer is real data. | 803 // Verify the first buffer is real data. |
804 int frames_read = 0; | 804 int frames_read = 0; |
805 std::unique_ptr<AudioBus> bus = AudioBus::Create(hardware_params_); | 805 std::unique_ptr<AudioBus> bus = AudioBus::Create(hardware_params_); |
806 EXPECT_TRUE(sink_->Render(bus.get(), 0, &frames_read)); | 806 EXPECT_TRUE(sink_->Render(bus.get(), base::TimeDelta(), &frames_read)); |
807 EXPECT_NE(0, frames_read); | 807 EXPECT_NE(0, frames_read); |
808 for (int i = 0; i < bus->frames(); ++i) | 808 for (int i = 0; i < bus->frames(); ++i) |
809 ASSERT_NE(0.0f, bus->channel(0)[i]); | 809 ASSERT_NE(0.0f, bus->channel(0)[i]); |
810 | 810 |
811 // Verify after suspend we get silence. | 811 // Verify after suspend we get silence. |
812 renderer_->OnSuspend(); | 812 renderer_->OnSuspend(); |
813 EXPECT_TRUE(sink_->Render(bus.get(), 0, &frames_read)); | 813 EXPECT_TRUE(sink_->Render(bus.get(), base::TimeDelta(), &frames_read)); |
814 EXPECT_EQ(0, frames_read); | 814 EXPECT_EQ(0, frames_read); |
815 | 815 |
816 // Verify after resume we get audio. | 816 // Verify after resume we get audio. |
817 bus->Zero(); | 817 bus->Zero(); |
818 renderer_->OnResume(); | 818 renderer_->OnResume(); |
819 EXPECT_TRUE(sink_->Render(bus.get(), 0, &frames_read)); | 819 EXPECT_TRUE(sink_->Render(bus.get(), base::TimeDelta(), &frames_read)); |
820 EXPECT_NE(0, frames_read); | 820 EXPECT_NE(0, frames_read); |
821 for (int i = 0; i < bus->frames(); ++i) | 821 for (int i = 0; i < bus->frames(); ++i) |
822 ASSERT_NE(0.0f, bus->channel(0)[i]); | 822 ASSERT_NE(0.0f, bus->channel(0)[i]); |
823 } | 823 } |
824 | 824 |
825 TEST_F(AudioRendererImplTest, RenderingDelayDoesNotOverflow) { | 825 TEST_F(AudioRendererImplTest, RenderingDelayDoesNotOverflow) { |
826 Initialize(); | 826 Initialize(); |
827 | 827 |
828 // Choose a first timestamp as far into the future as possible. Without care | 828 // Choose a first timestamp as far into the future as possible. Without care |
829 // this can cause an overflow in rendering arithmetic. | 829 // this can cause an overflow in rendering arithmetic. |
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998 // Time should be stopped until the next render call. | 998 // Time should be stopped until the next render call. |
999 EXPECT_EQ(current_time, CurrentMediaWallClockTime(&is_time_moving)); | 999 EXPECT_EQ(current_time, CurrentMediaWallClockTime(&is_time_moving)); |
1000 EXPECT_FALSE(is_time_moving); | 1000 EXPECT_FALSE(is_time_moving); |
1001 | 1001 |
1002 // Consume some buffered data with a small delay. | 1002 // Consume some buffered data with a small delay. |
1003 uint32_t delay_frames = 500; | 1003 uint32_t delay_frames = 500; |
1004 base::TimeDelta delay_time = base::TimeDelta::FromMicroseconds( | 1004 base::TimeDelta delay_time = base::TimeDelta::FromMicroseconds( |
1005 std::round(delay_frames * kOutputMicrosPerFrame)); | 1005 std::round(delay_frames * kOutputMicrosPerFrame)); |
1006 | 1006 |
1007 frames_to_consume.value = frames_buffered().value / 16; | 1007 frames_to_consume.value = frames_buffered().value / 16; |
1008 EXPECT_TRUE(ConsumeBufferedData(frames_to_consume, delay_frames)); | 1008 EXPECT_TRUE(ConsumeBufferedData(frames_to_consume, delay_time)); |
1009 | 1009 |
1010 // Verify time is adjusted for the current delay. | 1010 // Verify time is adjusted for the current delay. |
1011 current_time = tick_clock_->NowTicks() + delay_time; | 1011 current_time = tick_clock_->NowTicks() + delay_time; |
1012 EXPECT_EQ(current_time, CurrentMediaWallClockTime(&is_time_moving)); | 1012 EXPECT_EQ(current_time, CurrentMediaWallClockTime(&is_time_moving)); |
1013 EXPECT_TRUE(is_time_moving); | 1013 EXPECT_TRUE(is_time_moving); |
1014 EXPECT_EQ(current_time, | 1014 EXPECT_EQ(current_time, |
1015 ConvertMediaTime(renderer_->CurrentMediaTime(), &is_time_moving)); | 1015 ConvertMediaTime(renderer_->CurrentMediaTime(), &is_time_moving)); |
1016 EXPECT_TRUE(is_time_moving); | 1016 EXPECT_TRUE(is_time_moving); |
1017 | 1017 |
1018 tick_clock_->Advance(kOneSample); | 1018 tick_clock_->Advance(kOneSample); |
1019 renderer_->SetPlaybackRate(2); | 1019 renderer_->SetPlaybackRate(2); |
1020 EXPECT_EQ(current_time, CurrentMediaWallClockTime(&is_time_moving)); | 1020 EXPECT_EQ(current_time, CurrentMediaWallClockTime(&is_time_moving)); |
1021 EXPECT_TRUE(is_time_moving); | 1021 EXPECT_TRUE(is_time_moving); |
1022 EXPECT_EQ(current_time + kOneSample * 2, | 1022 EXPECT_EQ(current_time + kOneSample * 2, |
1023 ConvertMediaTime(renderer_->CurrentMediaTime(), &is_time_moving)); | 1023 ConvertMediaTime(renderer_->CurrentMediaTime(), &is_time_moving)); |
1024 EXPECT_TRUE(is_time_moving); | 1024 EXPECT_TRUE(is_time_moving); |
1025 | 1025 |
1026 // Advance far enough that we shouldn't be clamped to current time (tested | 1026 // Advance far enough that we shouldn't be clamped to current time (tested |
1027 // already above). | 1027 // already above). |
1028 tick_clock_->Advance(kOneSecond); | 1028 tick_clock_->Advance(kOneSecond); |
1029 EXPECT_EQ( | 1029 EXPECT_EQ( |
1030 current_time + timestamp_helper.GetFrameDuration(frames_to_consume.value), | 1030 current_time + timestamp_helper.GetFrameDuration(frames_to_consume.value), |
1031 CurrentMediaWallClockTime(&is_time_moving)); | 1031 CurrentMediaWallClockTime(&is_time_moving)); |
1032 EXPECT_TRUE(is_time_moving); | 1032 EXPECT_TRUE(is_time_moving); |
1033 } | 1033 } |
1034 | 1034 |
1035 } // namespace media | 1035 } // namespace media |
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