| /* |
| * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include "video/stream_synchronization.h" |
| |
| #include <algorithm> |
| |
| #include "system_wrappers/include/clock.h" |
| #include "system_wrappers/include/ntp_time.h" |
| #include "test/gtest.h" |
| |
| namespace webrtc { |
| namespace { |
| constexpr int kMaxChangeMs = 80; // From stream_synchronization.cc |
| constexpr int kDefaultAudioFrequency = 8000; |
| constexpr int kDefaultVideoFrequency = 90000; |
| constexpr int kSmoothingFilter = 4 * 2; |
| } // namespace |
| |
| class StreamSynchronizationTest : public ::testing::Test { |
| public: |
| StreamSynchronizationTest() |
| : sync_(0, 0), clock_sender_(98765000), clock_receiver_(43210000) {} |
| |
| protected: |
| // Generates the necessary RTCP measurements and RTP timestamps and computes |
| // the audio and video delays needed to get the two streams in sync. |
| // |audio_delay_ms| and |video_delay_ms| are the number of milliseconds after |
| // capture which the frames are received. |
| // |current_audio_delay_ms| is the number of milliseconds which audio is |
| // currently being delayed by the receiver. |
| bool DelayedStreams(int audio_delay_ms, |
| int video_delay_ms, |
| int current_audio_delay_ms, |
| int* total_audio_delay_ms, |
| int* total_video_delay_ms) { |
| int audio_frequency = |
| static_cast<int>(kDefaultAudioFrequency * audio_clock_drift_ + 0.5); |
| int video_frequency = |
| static_cast<int>(kDefaultVideoFrequency * video_clock_drift_ + 0.5); |
| |
| // Generate NTP/RTP timestamp pair for both streams corresponding to RTCP. |
| bool new_sr; |
| StreamSynchronization::Measurements audio; |
| StreamSynchronization::Measurements video; |
| NtpTime ntp_time = clock_sender_.CurrentNtpTime(); |
| uint32_t rtp_timestamp = |
| clock_sender_.CurrentTime().ms() * audio_frequency / 1000; |
| EXPECT_TRUE(audio.rtp_to_ntp.UpdateMeasurements( |
| ntp_time.seconds(), ntp_time.fractions(), rtp_timestamp, &new_sr)); |
| clock_sender_.AdvanceTimeMilliseconds(100); |
| clock_receiver_.AdvanceTimeMilliseconds(100); |
| ntp_time = clock_sender_.CurrentNtpTime(); |
| rtp_timestamp = clock_sender_.CurrentTime().ms() * video_frequency / 1000; |
| EXPECT_TRUE(video.rtp_to_ntp.UpdateMeasurements( |
| ntp_time.seconds(), ntp_time.fractions(), rtp_timestamp, &new_sr)); |
| clock_sender_.AdvanceTimeMilliseconds(900); |
| clock_receiver_.AdvanceTimeMilliseconds(900); |
| ntp_time = clock_sender_.CurrentNtpTime(); |
| rtp_timestamp = clock_sender_.CurrentTime().ms() * audio_frequency / 1000; |
| EXPECT_TRUE(audio.rtp_to_ntp.UpdateMeasurements( |
| ntp_time.seconds(), ntp_time.fractions(), rtp_timestamp, &new_sr)); |
| clock_sender_.AdvanceTimeMilliseconds(100); |
| clock_receiver_.AdvanceTimeMilliseconds(100); |
| ntp_time = clock_sender_.CurrentNtpTime(); |
| rtp_timestamp = clock_sender_.CurrentTime().ms() * video_frequency / 1000; |
| EXPECT_TRUE(video.rtp_to_ntp.UpdateMeasurements( |
| ntp_time.seconds(), ntp_time.fractions(), rtp_timestamp, &new_sr)); |
| clock_sender_.AdvanceTimeMilliseconds(900); |
| clock_receiver_.AdvanceTimeMilliseconds(900); |
| |
| // Capture an audio and a video frame at the same time. |
| audio.latest_timestamp = |
| clock_sender_.CurrentTime().ms() * audio_frequency / 1000; |
| video.latest_timestamp = |
| clock_sender_.CurrentTime().ms() * video_frequency / 1000; |
| |
| if (audio_delay_ms > video_delay_ms) { |
| // Audio later than video. |
| clock_receiver_.AdvanceTimeMilliseconds(video_delay_ms); |
| video.latest_receive_time_ms = clock_receiver_.CurrentTime().ms(); |
| clock_receiver_.AdvanceTimeMilliseconds(audio_delay_ms - video_delay_ms); |
| audio.latest_receive_time_ms = clock_receiver_.CurrentTime().ms(); |
| } else { |
| // Video later than audio. |
| clock_receiver_.AdvanceTimeMilliseconds(audio_delay_ms); |
| audio.latest_receive_time_ms = clock_receiver_.CurrentTime().ms(); |
| clock_receiver_.AdvanceTimeMilliseconds(video_delay_ms - audio_delay_ms); |
| video.latest_receive_time_ms = clock_receiver_.CurrentTime().ms(); |
| } |
| |
| int relative_delay_ms; |
| EXPECT_TRUE(StreamSynchronization::ComputeRelativeDelay( |
| audio, video, &relative_delay_ms)); |
| EXPECT_EQ(video_delay_ms - audio_delay_ms, relative_delay_ms); |
| |
| return sync_.ComputeDelays(relative_delay_ms, current_audio_delay_ms, |
| total_audio_delay_ms, total_video_delay_ms); |
| } |
| |
| // Simulate audio playback 300 ms after capture and video rendering 100 ms |
| // after capture. Verify that the correct extra delays are calculated for |
| // audio and video, and that they change correctly when we simulate that |
| // NetEQ or the VCM adds more delay to the streams. |
| void BothDelayedAudioLaterTest(int base_target_delay_ms) { |
| const int kAudioDelayMs = base_target_delay_ms + 300; |
| const int kVideoDelayMs = base_target_delay_ms + 100; |
| int current_audio_delay_ms = base_target_delay_ms; |
| int total_audio_delay_ms = 0; |
| int total_video_delay_ms = base_target_delay_ms; |
| int filtered_move = (kAudioDelayMs - kVideoDelayMs) / kSmoothingFilter; |
| |
| EXPECT_TRUE(DelayedStreams(kAudioDelayMs, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| EXPECT_EQ(base_target_delay_ms + filtered_move, total_video_delay_ms); |
| EXPECT_EQ(base_target_delay_ms, total_audio_delay_ms); |
| |
| // Set new current delay. |
| current_audio_delay_ms = total_audio_delay_ms; |
| clock_sender_.AdvanceTimeMilliseconds(1000); |
| clock_receiver_.AdvanceTimeMilliseconds( |
| 1000 - std::max(kAudioDelayMs, kVideoDelayMs)); |
| // Simulate base_target_delay_ms minimum delay in the VCM. |
| total_video_delay_ms = base_target_delay_ms; |
| EXPECT_TRUE(DelayedStreams(kAudioDelayMs, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| EXPECT_EQ(base_target_delay_ms + 2 * filtered_move, total_video_delay_ms); |
| EXPECT_EQ(base_target_delay_ms, total_audio_delay_ms); |
| |
| // Set new current delay. |
| current_audio_delay_ms = total_audio_delay_ms; |
| clock_sender_.AdvanceTimeMilliseconds(1000); |
| clock_receiver_.AdvanceTimeMilliseconds( |
| 1000 - std::max(kAudioDelayMs, kVideoDelayMs)); |
| // Simulate base_target_delay_ms minimum delay in the VCM. |
| total_video_delay_ms = base_target_delay_ms; |
| EXPECT_TRUE(DelayedStreams(kAudioDelayMs, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| EXPECT_EQ(base_target_delay_ms + 3 * filtered_move, total_video_delay_ms); |
| EXPECT_EQ(base_target_delay_ms, total_audio_delay_ms); |
| |
| // Simulate that NetEQ introduces some audio delay. |
| const int kNeteqDelayIncrease = 50; |
| current_audio_delay_ms = base_target_delay_ms + kNeteqDelayIncrease; |
| clock_sender_.AdvanceTimeMilliseconds(1000); |
| clock_receiver_.AdvanceTimeMilliseconds( |
| 1000 - std::max(kAudioDelayMs, kVideoDelayMs)); |
| // Simulate base_target_delay_ms minimum delay in the VCM. |
| total_video_delay_ms = base_target_delay_ms; |
| EXPECT_TRUE(DelayedStreams(kAudioDelayMs, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| filtered_move = 3 * filtered_move + |
| (kNeteqDelayIncrease + kAudioDelayMs - kVideoDelayMs) / |
| kSmoothingFilter; |
| EXPECT_EQ(base_target_delay_ms + filtered_move, total_video_delay_ms); |
| EXPECT_EQ(base_target_delay_ms, total_audio_delay_ms); |
| |
| // Simulate that NetEQ reduces its delay. |
| const int kNeteqDelayDecrease = 10; |
| current_audio_delay_ms = base_target_delay_ms + kNeteqDelayDecrease; |
| clock_sender_.AdvanceTimeMilliseconds(1000); |
| clock_receiver_.AdvanceTimeMilliseconds( |
| 1000 - std::max(kAudioDelayMs, kVideoDelayMs)); |
| // Simulate base_target_delay_ms minimum delay in the VCM. |
| total_video_delay_ms = base_target_delay_ms; |
| EXPECT_TRUE(DelayedStreams(kAudioDelayMs, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| filtered_move = |
| filtered_move + (kNeteqDelayDecrease + kAudioDelayMs - kVideoDelayMs) / |
| kSmoothingFilter; |
| EXPECT_EQ(base_target_delay_ms + filtered_move, total_video_delay_ms); |
| EXPECT_EQ(base_target_delay_ms, total_audio_delay_ms); |
| } |
| |
| void BothDelayedVideoLaterTest(int base_target_delay_ms) { |
| const int kAudioDelayMs = base_target_delay_ms + 100; |
| const int kVideoDelayMs = base_target_delay_ms + 300; |
| int current_audio_delay_ms = base_target_delay_ms; |
| int total_audio_delay_ms = 0; |
| int total_video_delay_ms = base_target_delay_ms; |
| |
| EXPECT_TRUE(DelayedStreams(kAudioDelayMs, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| EXPECT_EQ(base_target_delay_ms, total_video_delay_ms); |
| // The audio delay is not allowed to change more than this. |
| EXPECT_GE(base_target_delay_ms + kMaxChangeMs, total_audio_delay_ms); |
| int last_total_audio_delay_ms = total_audio_delay_ms; |
| |
| // Set new current audio delay. |
| current_audio_delay_ms = total_audio_delay_ms; |
| clock_sender_.AdvanceTimeMilliseconds(1000); |
| clock_receiver_.AdvanceTimeMilliseconds(800); |
| EXPECT_TRUE(DelayedStreams(kAudioDelayMs, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| EXPECT_EQ(base_target_delay_ms, total_video_delay_ms); |
| EXPECT_EQ(last_total_audio_delay_ms + |
| MaxAudioDelayChangeMs( |
| current_audio_delay_ms, |
| base_target_delay_ms + kVideoDelayMs - kAudioDelayMs), |
| total_audio_delay_ms); |
| last_total_audio_delay_ms = total_audio_delay_ms; |
| |
| // Set new current audio delay. |
| current_audio_delay_ms = total_audio_delay_ms; |
| clock_sender_.AdvanceTimeMilliseconds(1000); |
| clock_receiver_.AdvanceTimeMilliseconds(800); |
| EXPECT_TRUE(DelayedStreams(kAudioDelayMs, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| EXPECT_EQ(base_target_delay_ms, total_video_delay_ms); |
| EXPECT_EQ(last_total_audio_delay_ms + |
| MaxAudioDelayChangeMs( |
| current_audio_delay_ms, |
| base_target_delay_ms + kVideoDelayMs - kAudioDelayMs), |
| total_audio_delay_ms); |
| last_total_audio_delay_ms = total_audio_delay_ms; |
| |
| // Simulate that NetEQ for some reason reduced the delay. |
| current_audio_delay_ms = base_target_delay_ms + 10; |
| clock_sender_.AdvanceTimeMilliseconds(1000); |
| clock_receiver_.AdvanceTimeMilliseconds(800); |
| EXPECT_TRUE(DelayedStreams(kAudioDelayMs, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| EXPECT_EQ(base_target_delay_ms, total_video_delay_ms); |
| EXPECT_EQ(last_total_audio_delay_ms + |
| MaxAudioDelayChangeMs( |
| current_audio_delay_ms, |
| base_target_delay_ms + kVideoDelayMs - kAudioDelayMs), |
| total_audio_delay_ms); |
| last_total_audio_delay_ms = total_audio_delay_ms; |
| |
| // Simulate that NetEQ for some reason significantly increased the delay. |
| current_audio_delay_ms = base_target_delay_ms + 350; |
| clock_sender_.AdvanceTimeMilliseconds(1000); |
| clock_receiver_.AdvanceTimeMilliseconds(800); |
| EXPECT_TRUE(DelayedStreams(kAudioDelayMs, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| EXPECT_EQ(base_target_delay_ms, total_video_delay_ms); |
| EXPECT_EQ(last_total_audio_delay_ms + |
| MaxAudioDelayChangeMs( |
| current_audio_delay_ms, |
| base_target_delay_ms + kVideoDelayMs - kAudioDelayMs), |
| total_audio_delay_ms); |
| } |
| |
| int MaxAudioDelayChangeMs(int current_audio_delay_ms, int delay_ms) const { |
| int diff_ms = (delay_ms - current_audio_delay_ms) / kSmoothingFilter; |
| diff_ms = std::min(diff_ms, kMaxChangeMs); |
| diff_ms = std::max(diff_ms, -kMaxChangeMs); |
| return diff_ms; |
| } |
| |
| StreamSynchronization sync_; |
| SimulatedClock clock_sender_; |
| SimulatedClock clock_receiver_; |
| double audio_clock_drift_ = 1.0; |
| double video_clock_drift_ = 1.0; |
| }; |
| |
| TEST_F(StreamSynchronizationTest, NoDelay) { |
| int total_audio_delay_ms = 0; |
| int total_video_delay_ms = 0; |
| |
| EXPECT_FALSE(DelayedStreams(/*audio_delay_ms=*/0, /*video_delay_ms=*/0, |
| /*current_audio_delay_ms=*/0, |
| &total_audio_delay_ms, &total_video_delay_ms)); |
| EXPECT_EQ(0, total_audio_delay_ms); |
| EXPECT_EQ(0, total_video_delay_ms); |
| } |
| |
| TEST_F(StreamSynchronizationTest, VideoDelayed) { |
| const int kAudioDelayMs = 200; |
| int total_audio_delay_ms = 0; |
| int total_video_delay_ms = 0; |
| |
| EXPECT_TRUE(DelayedStreams(kAudioDelayMs, /*video_delay_ms=*/0, |
| /*current_audio_delay_ms=*/0, |
| &total_audio_delay_ms, &total_video_delay_ms)); |
| EXPECT_EQ(0, total_audio_delay_ms); |
| // The delay is not allowed to change more than this. |
| EXPECT_EQ(kAudioDelayMs / kSmoothingFilter, total_video_delay_ms); |
| |
| // Simulate 0 minimum delay in the VCM. |
| total_video_delay_ms = 0; |
| clock_sender_.AdvanceTimeMilliseconds(1000); |
| clock_receiver_.AdvanceTimeMilliseconds(800); |
| EXPECT_TRUE(DelayedStreams(kAudioDelayMs, /*video_delay_ms=*/0, |
| /*current_audio_delay_ms=*/0, |
| &total_audio_delay_ms, &total_video_delay_ms)); |
| EXPECT_EQ(0, total_audio_delay_ms); |
| EXPECT_EQ(2 * kAudioDelayMs / kSmoothingFilter, total_video_delay_ms); |
| |
| // Simulate 0 minimum delay in the VCM. |
| total_video_delay_ms = 0; |
| clock_sender_.AdvanceTimeMilliseconds(1000); |
| clock_receiver_.AdvanceTimeMilliseconds(800); |
| EXPECT_TRUE(DelayedStreams(kAudioDelayMs, /*video_delay_ms=*/0, |
| /*current_audio_delay_ms=*/0, |
| &total_audio_delay_ms, &total_video_delay_ms)); |
| EXPECT_EQ(0, total_audio_delay_ms); |
| EXPECT_EQ(3 * kAudioDelayMs / kSmoothingFilter, total_video_delay_ms); |
| } |
| |
| TEST_F(StreamSynchronizationTest, AudioDelayed) { |
| const int kVideoDelayMs = 200; |
| int current_audio_delay_ms = 0; |
| int total_audio_delay_ms = 0; |
| int total_video_delay_ms = 0; |
| |
| EXPECT_TRUE(DelayedStreams(/*audio_delay_ms=*/0, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| EXPECT_EQ(0, total_video_delay_ms); |
| // The delay is not allowed to change more than this. |
| EXPECT_EQ(kVideoDelayMs / kSmoothingFilter, total_audio_delay_ms); |
| int last_total_audio_delay_ms = total_audio_delay_ms; |
| |
| // Set new current audio delay. |
| current_audio_delay_ms = total_audio_delay_ms; |
| clock_sender_.AdvanceTimeMilliseconds(1000); |
| clock_receiver_.AdvanceTimeMilliseconds(800); |
| EXPECT_TRUE(DelayedStreams(/*audio_delay_ms=*/0, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| EXPECT_EQ(0, total_video_delay_ms); |
| EXPECT_EQ(last_total_audio_delay_ms + |
| MaxAudioDelayChangeMs(current_audio_delay_ms, kVideoDelayMs), |
| total_audio_delay_ms); |
| last_total_audio_delay_ms = total_audio_delay_ms; |
| |
| // Set new current audio delay. |
| current_audio_delay_ms = total_audio_delay_ms; |
| clock_sender_.AdvanceTimeMilliseconds(1000); |
| clock_receiver_.AdvanceTimeMilliseconds(800); |
| EXPECT_TRUE(DelayedStreams(/*audio_delay_ms=*/0, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| EXPECT_EQ(0, total_video_delay_ms); |
| EXPECT_EQ(last_total_audio_delay_ms + |
| MaxAudioDelayChangeMs(current_audio_delay_ms, kVideoDelayMs), |
| total_audio_delay_ms); |
| last_total_audio_delay_ms = total_audio_delay_ms; |
| |
| // Simulate that NetEQ for some reason reduced the delay. |
| current_audio_delay_ms = 10; |
| clock_sender_.AdvanceTimeMilliseconds(1000); |
| clock_receiver_.AdvanceTimeMilliseconds(800); |
| EXPECT_TRUE(DelayedStreams(/*audio_delay_ms=*/0, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| EXPECT_EQ(0, total_video_delay_ms); |
| EXPECT_EQ(last_total_audio_delay_ms + |
| MaxAudioDelayChangeMs(current_audio_delay_ms, kVideoDelayMs), |
| total_audio_delay_ms); |
| last_total_audio_delay_ms = total_audio_delay_ms; |
| |
| // Simulate that NetEQ for some reason significantly increased the delay. |
| current_audio_delay_ms = 350; |
| clock_sender_.AdvanceTimeMilliseconds(1000); |
| clock_receiver_.AdvanceTimeMilliseconds(800); |
| EXPECT_TRUE(DelayedStreams(/*audio_delay_ms=*/0, kVideoDelayMs, |
| current_audio_delay_ms, &total_audio_delay_ms, |
| &total_video_delay_ms)); |
| EXPECT_EQ(0, total_video_delay_ms); |
| EXPECT_EQ(last_total_audio_delay_ms + |
| MaxAudioDelayChangeMs(current_audio_delay_ms, kVideoDelayMs), |
| total_audio_delay_ms); |
| } |
| |
| TEST_F(StreamSynchronizationTest, BothDelayedVideoLater) { |
| BothDelayedVideoLaterTest(0); |
| } |
| |
| TEST_F(StreamSynchronizationTest, BothDelayedVideoLaterAudioClockDrift) { |
| audio_clock_drift_ = 1.05; |
| BothDelayedVideoLaterTest(0); |
| } |
| |
| TEST_F(StreamSynchronizationTest, BothDelayedVideoLaterVideoClockDrift) { |
| video_clock_drift_ = 1.05; |
| BothDelayedVideoLaterTest(0); |
| } |
| |
| TEST_F(StreamSynchronizationTest, BothDelayedAudioLater) { |
| BothDelayedAudioLaterTest(0); |
| } |
| |
| TEST_F(StreamSynchronizationTest, BothDelayedAudioClockDrift) { |
| audio_clock_drift_ = 1.05; |
| BothDelayedAudioLaterTest(0); |
| } |
| |
| TEST_F(StreamSynchronizationTest, BothDelayedVideoClockDrift) { |
| video_clock_drift_ = 1.05; |
| BothDelayedAudioLaterTest(0); |
| } |
| |
| TEST_F(StreamSynchronizationTest, BothEquallyDelayed) { |
| const int kDelayMs = 2000; |
| int current_audio_delay_ms = kDelayMs; |
| int total_audio_delay_ms = 0; |
| int total_video_delay_ms = kDelayMs; |
| // In sync, expect no change. |
| EXPECT_FALSE(DelayedStreams(kDelayMs, kDelayMs, current_audio_delay_ms, |
| &total_audio_delay_ms, &total_video_delay_ms)); |
| // Trigger another call with the same values, delay should not be modified. |
| total_video_delay_ms = kDelayMs; |
| EXPECT_FALSE(DelayedStreams(kDelayMs, kDelayMs, current_audio_delay_ms, |
| &total_audio_delay_ms, &total_video_delay_ms)); |
| // Change delay value, delay should not be modified. |
| const int kDelayMs2 = 5000; |
| current_audio_delay_ms = kDelayMs2; |
| total_video_delay_ms = kDelayMs2; |
| EXPECT_FALSE(DelayedStreams(kDelayMs2, kDelayMs2, current_audio_delay_ms, |
| &total_audio_delay_ms, &total_video_delay_ms)); |
| } |
| |
| TEST_F(StreamSynchronizationTest, BothDelayedAudioLaterWithBaseDelay) { |
| const int kBaseTargetDelayMs = 3000; |
| sync_.SetTargetBufferingDelay(kBaseTargetDelayMs); |
| BothDelayedAudioLaterTest(kBaseTargetDelayMs); |
| } |
| |
| TEST_F(StreamSynchronizationTest, BothDelayedAudioClockDriftWithBaseDelay) { |
| const int kBaseTargetDelayMs = 3000; |
| sync_.SetTargetBufferingDelay(kBaseTargetDelayMs); |
| audio_clock_drift_ = 1.05; |
| BothDelayedAudioLaterTest(kBaseTargetDelayMs); |
| } |
| |
| TEST_F(StreamSynchronizationTest, BothDelayedVideoClockDriftWithBaseDelay) { |
| const int kBaseTargetDelayMs = 3000; |
| sync_.SetTargetBufferingDelay(kBaseTargetDelayMs); |
| video_clock_drift_ = 1.05; |
| BothDelayedAudioLaterTest(kBaseTargetDelayMs); |
| } |
| |
| TEST_F(StreamSynchronizationTest, BothDelayedVideoLaterWithBaseDelay) { |
| const int kBaseTargetDelayMs = 2000; |
| sync_.SetTargetBufferingDelay(kBaseTargetDelayMs); |
| BothDelayedVideoLaterTest(kBaseTargetDelayMs); |
| } |
| |
| TEST_F(StreamSynchronizationTest, |
| BothDelayedVideoLaterAudioClockDriftWithBaseDelay) { |
| const int kBaseTargetDelayMs = 2000; |
| audio_clock_drift_ = 1.05; |
| sync_.SetTargetBufferingDelay(kBaseTargetDelayMs); |
| BothDelayedVideoLaterTest(kBaseTargetDelayMs); |
| } |
| |
| TEST_F(StreamSynchronizationTest, |
| BothDelayedVideoLaterVideoClockDriftWithBaseDelay) { |
| const int kBaseTargetDelayMs = 2000; |
| video_clock_drift_ = 1.05; |
| sync_.SetTargetBufferingDelay(kBaseTargetDelayMs); |
| BothDelayedVideoLaterTest(kBaseTargetDelayMs); |
| } |
| |
| } // namespace webrtc |
