diff options
Diffstat (limited to 'webrtc/video_engine/stream_synchronization_unittest.cc')
-rw-r--r-- | webrtc/video_engine/stream_synchronization_unittest.cc | 562 |
1 files changed, 0 insertions, 562 deletions
diff --git a/webrtc/video_engine/stream_synchronization_unittest.cc b/webrtc/video_engine/stream_synchronization_unittest.cc deleted file mode 100644 index 7136f1e1c7..0000000000 --- a/webrtc/video_engine/stream_synchronization_unittest.cc +++ /dev/null @@ -1,562 +0,0 @@ -/* - * 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 <algorithm> -#include <math.h> - -#include "testing/gtest/include/gtest/gtest.h" -#include "webrtc/video_engine/stream_synchronization.h" - -namespace webrtc { - -// These correspond to the same constants defined in vie_sync_module.cc. -enum { kMaxVideoDiffMs = 80 }; -enum { kMaxAudioDiffMs = 80 }; -enum { kMaxDelay = 1500 }; - -// Test constants. -enum { kDefaultAudioFrequency = 8000 }; -enum { kDefaultVideoFrequency = 90000 }; -const double kNtpFracPerMs = 4.294967296E6; -static const int kSmoothingFilter = 4 * 2; - -class Time { - public: - explicit Time(int64_t offset) - : kNtpJan1970(2208988800UL), - time_now_ms_(offset) {} - - RtcpMeasurement GenerateRtcp(int frequency, uint32_t offset) const { - RtcpMeasurement rtcp; - NowNtp(&rtcp.ntp_secs, &rtcp.ntp_frac); - rtcp.rtp_timestamp = NowRtp(frequency, offset); - return rtcp; - } - - void NowNtp(uint32_t* ntp_secs, uint32_t* ntp_frac) const { - *ntp_secs = time_now_ms_ / 1000 + kNtpJan1970; - int64_t remainder_ms = time_now_ms_ % 1000; - *ntp_frac = static_cast<uint32_t>( - static_cast<double>(remainder_ms) * kNtpFracPerMs + 0.5); - } - - uint32_t NowRtp(int frequency, uint32_t offset) const { - return frequency * time_now_ms_ / 1000 + offset; - } - - void IncreaseTimeMs(int64_t inc) { - time_now_ms_ += inc; - } - - int64_t time_now_ms() const { - return time_now_ms_; - } - - private: - // January 1970, in NTP seconds. - const uint32_t kNtpJan1970; - int64_t time_now_ms_; -}; - -class StreamSynchronizationTest : public ::testing::Test { - protected: - virtual void SetUp() { - sync_ = new StreamSynchronization(0, 0); - send_time_ = new Time(kSendTimeOffsetMs); - receive_time_ = new Time(kReceiveTimeOffsetMs); - audio_clock_drift_ = 1.0; - video_clock_drift_ = 1.0; - } - - virtual void TearDown() { - delete sync_; - delete send_time_; - delete receive_time_; - } - - // 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 rendered. - // |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* extra_audio_delay_ms, - int* total_video_delay_ms) { - int audio_frequency = static_cast<int>(kDefaultAudioFrequency * - audio_clock_drift_ + 0.5); - int audio_offset = 0; - int video_frequency = static_cast<int>(kDefaultVideoFrequency * - video_clock_drift_ + 0.5); - int video_offset = 0; - StreamSynchronization::Measurements audio; - StreamSynchronization::Measurements video; - // Generate NTP/RTP timestamp pair for both streams corresponding to RTCP. - audio.rtcp.push_front(send_time_->GenerateRtcp(audio_frequency, - audio_offset)); - send_time_->IncreaseTimeMs(100); - receive_time_->IncreaseTimeMs(100); - video.rtcp.push_front(send_time_->GenerateRtcp(video_frequency, - video_offset)); - send_time_->IncreaseTimeMs(900); - receive_time_->IncreaseTimeMs(900); - audio.rtcp.push_front(send_time_->GenerateRtcp(audio_frequency, - audio_offset)); - send_time_->IncreaseTimeMs(100); - receive_time_->IncreaseTimeMs(100); - video.rtcp.push_front(send_time_->GenerateRtcp(video_frequency, - video_offset)); - send_time_->IncreaseTimeMs(900); - receive_time_->IncreaseTimeMs(900); - - // Capture an audio and a video frame at the same time. - audio.latest_timestamp = send_time_->NowRtp(audio_frequency, - audio_offset); - video.latest_timestamp = send_time_->NowRtp(video_frequency, - video_offset); - - if (audio_delay_ms > video_delay_ms) { - // Audio later than video. - receive_time_->IncreaseTimeMs(video_delay_ms); - video.latest_receive_time_ms = receive_time_->time_now_ms(); - receive_time_->IncreaseTimeMs(audio_delay_ms - video_delay_ms); - audio.latest_receive_time_ms = receive_time_->time_now_ms(); - } else { - // Video later than audio. - receive_time_->IncreaseTimeMs(audio_delay_ms); - audio.latest_receive_time_ms = receive_time_->time_now_ms(); - receive_time_->IncreaseTimeMs(video_delay_ms - audio_delay_ms); - video.latest_receive_time_ms = receive_time_->time_now_ms(); - } - int relative_delay_ms; - 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, - extra_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. - // TODO(holmer): This is currently wrong! We should simply change - // audio_delay_ms or video_delay_ms since those now include VCM and NetEQ - // delays. - void BothDelayedAudioLaterTest(int base_target_delay) { - int current_audio_delay_ms = base_target_delay; - int audio_delay_ms = base_target_delay + 300; - int video_delay_ms = base_target_delay + 100; - int extra_audio_delay_ms = 0; - int total_video_delay_ms = base_target_delay; - int filtered_move = (audio_delay_ms - video_delay_ms) / kSmoothingFilter; - const int kNeteqDelayIncrease = 50; - const int kNeteqDelayDecrease = 10; - - EXPECT_TRUE(DelayedStreams(audio_delay_ms, - video_delay_ms, - current_audio_delay_ms, - &extra_audio_delay_ms, - &total_video_delay_ms)); - EXPECT_EQ(base_target_delay + filtered_move, total_video_delay_ms); - EXPECT_EQ(base_target_delay, extra_audio_delay_ms); - current_audio_delay_ms = extra_audio_delay_ms; - - send_time_->IncreaseTimeMs(1000); - receive_time_->IncreaseTimeMs(1000 - std::max(audio_delay_ms, - video_delay_ms)); - // Simulate base_target_delay minimum delay in the VCM. - total_video_delay_ms = base_target_delay; - EXPECT_TRUE(DelayedStreams(audio_delay_ms, - video_delay_ms, - current_audio_delay_ms, - &extra_audio_delay_ms, - &total_video_delay_ms)); - EXPECT_EQ(base_target_delay + 2 * filtered_move, total_video_delay_ms); - EXPECT_EQ(base_target_delay, extra_audio_delay_ms); - current_audio_delay_ms = extra_audio_delay_ms; - - send_time_->IncreaseTimeMs(1000); - receive_time_->IncreaseTimeMs(1000 - std::max(audio_delay_ms, - video_delay_ms)); - // Simulate base_target_delay minimum delay in the VCM. - total_video_delay_ms = base_target_delay; - EXPECT_TRUE(DelayedStreams(audio_delay_ms, - video_delay_ms, - current_audio_delay_ms, - &extra_audio_delay_ms, - &total_video_delay_ms)); - EXPECT_EQ(base_target_delay + 3 * filtered_move, total_video_delay_ms); - EXPECT_EQ(base_target_delay, extra_audio_delay_ms); - - // Simulate that NetEQ introduces some audio delay. - current_audio_delay_ms = base_target_delay + kNeteqDelayIncrease; - send_time_->IncreaseTimeMs(1000); - receive_time_->IncreaseTimeMs(1000 - std::max(audio_delay_ms, - video_delay_ms)); - // Simulate base_target_delay minimum delay in the VCM. - total_video_delay_ms = base_target_delay; - EXPECT_TRUE(DelayedStreams(audio_delay_ms, - video_delay_ms, - current_audio_delay_ms, - &extra_audio_delay_ms, - &total_video_delay_ms)); - filtered_move = 3 * filtered_move + - (kNeteqDelayIncrease + audio_delay_ms - video_delay_ms) / - kSmoothingFilter; - EXPECT_EQ(base_target_delay + filtered_move, total_video_delay_ms); - EXPECT_EQ(base_target_delay, extra_audio_delay_ms); - - // Simulate that NetEQ reduces its delay. - current_audio_delay_ms = base_target_delay + kNeteqDelayDecrease; - send_time_->IncreaseTimeMs(1000); - receive_time_->IncreaseTimeMs(1000 - std::max(audio_delay_ms, - video_delay_ms)); - // Simulate base_target_delay minimum delay in the VCM. - total_video_delay_ms = base_target_delay; - EXPECT_TRUE(DelayedStreams(audio_delay_ms, - video_delay_ms, - current_audio_delay_ms, - &extra_audio_delay_ms, - &total_video_delay_ms)); - - filtered_move = filtered_move + - (kNeteqDelayDecrease + audio_delay_ms - video_delay_ms) / - kSmoothingFilter; - - EXPECT_EQ(base_target_delay + filtered_move, total_video_delay_ms); - EXPECT_EQ(base_target_delay, extra_audio_delay_ms); - } - - void BothDelayedVideoLaterTest(int base_target_delay) { - int current_audio_delay_ms = base_target_delay; - int audio_delay_ms = base_target_delay + 100; - int video_delay_ms = base_target_delay + 300; - int extra_audio_delay_ms = 0; - int total_video_delay_ms = base_target_delay; - - EXPECT_TRUE(DelayedStreams(audio_delay_ms, - video_delay_ms, - current_audio_delay_ms, - &extra_audio_delay_ms, - &total_video_delay_ms)); - EXPECT_EQ(base_target_delay, total_video_delay_ms); - // The audio delay is not allowed to change more than this in 1 second. - EXPECT_GE(base_target_delay + kMaxAudioDiffMs, extra_audio_delay_ms); - current_audio_delay_ms = extra_audio_delay_ms; - int current_extra_delay_ms = extra_audio_delay_ms; - - send_time_->IncreaseTimeMs(1000); - receive_time_->IncreaseTimeMs(800); - EXPECT_TRUE(DelayedStreams(audio_delay_ms, - video_delay_ms, - current_audio_delay_ms, - &extra_audio_delay_ms, - &total_video_delay_ms)); - EXPECT_EQ(base_target_delay, total_video_delay_ms); - // The audio delay is not allowed to change more than the half of the - // required change in delay. - EXPECT_EQ(current_extra_delay_ms + MaxAudioDelayIncrease( - current_audio_delay_ms, - base_target_delay + video_delay_ms - audio_delay_ms), - extra_audio_delay_ms); - current_audio_delay_ms = extra_audio_delay_ms; - current_extra_delay_ms = extra_audio_delay_ms; - - send_time_->IncreaseTimeMs(1000); - receive_time_->IncreaseTimeMs(800); - EXPECT_TRUE(DelayedStreams(audio_delay_ms, - video_delay_ms, - current_audio_delay_ms, - &extra_audio_delay_ms, - &total_video_delay_ms)); - EXPECT_EQ(base_target_delay, total_video_delay_ms); - // The audio delay is not allowed to change more than the half of the - // required change in delay. - EXPECT_EQ(current_extra_delay_ms + MaxAudioDelayIncrease( - current_audio_delay_ms, - base_target_delay + video_delay_ms - audio_delay_ms), - extra_audio_delay_ms); - current_extra_delay_ms = extra_audio_delay_ms; - - // Simulate that NetEQ for some reason reduced the delay. - current_audio_delay_ms = base_target_delay + 10; - send_time_->IncreaseTimeMs(1000); - receive_time_->IncreaseTimeMs(800); - EXPECT_TRUE(DelayedStreams(audio_delay_ms, - video_delay_ms, - current_audio_delay_ms, - &extra_audio_delay_ms, - &total_video_delay_ms)); - EXPECT_EQ(base_target_delay, total_video_delay_ms); - // Since we only can ask NetEQ for a certain amount of extra delay, and - // we only measure the total NetEQ delay, we will ask for additional delay - // here to try to stay in sync. - EXPECT_EQ(current_extra_delay_ms + MaxAudioDelayIncrease( - current_audio_delay_ms, - base_target_delay + video_delay_ms - audio_delay_ms), - extra_audio_delay_ms); - current_extra_delay_ms = extra_audio_delay_ms; - - // Simulate that NetEQ for some reason significantly increased the delay. - current_audio_delay_ms = base_target_delay + 350; - send_time_->IncreaseTimeMs(1000); - receive_time_->IncreaseTimeMs(800); - EXPECT_TRUE(DelayedStreams(audio_delay_ms, - video_delay_ms, - current_audio_delay_ms, - &extra_audio_delay_ms, - &total_video_delay_ms)); - EXPECT_EQ(base_target_delay, total_video_delay_ms); - // The audio delay is not allowed to change more than the half of the - // required change in delay. - EXPECT_EQ(current_extra_delay_ms + MaxAudioDelayIncrease( - current_audio_delay_ms, - base_target_delay + video_delay_ms - audio_delay_ms), - extra_audio_delay_ms); - } - - int MaxAudioDelayIncrease(int current_audio_delay_ms, int delay_ms) { - return std::min((delay_ms - current_audio_delay_ms) / kSmoothingFilter, - static_cast<int>(kMaxAudioDiffMs)); - } - - int MaxAudioDelayDecrease(int current_audio_delay_ms, int delay_ms) { - return std::max((delay_ms - current_audio_delay_ms) / kSmoothingFilter, - -kMaxAudioDiffMs); - } - - enum { kSendTimeOffsetMs = 98765 }; - enum { kReceiveTimeOffsetMs = 43210 }; - - StreamSynchronization* sync_; - Time* send_time_; // The simulated clock at the sender. - Time* receive_time_; // The simulated clock at the receiver. - double audio_clock_drift_; - double video_clock_drift_; -}; - -TEST_F(StreamSynchronizationTest, NoDelay) { - uint32_t current_audio_delay_ms = 0; - int extra_audio_delay_ms = 0; - int total_video_delay_ms = 0; - - EXPECT_FALSE(DelayedStreams(0, 0, current_audio_delay_ms, - &extra_audio_delay_ms, &total_video_delay_ms)); - EXPECT_EQ(0, extra_audio_delay_ms); - EXPECT_EQ(0, total_video_delay_ms); -} - -TEST_F(StreamSynchronizationTest, VideoDelay) { - uint32_t current_audio_delay_ms = 0; - int delay_ms = 200; - int extra_audio_delay_ms = 0; - int total_video_delay_ms = 0; - - EXPECT_TRUE(DelayedStreams(delay_ms, 0, current_audio_delay_ms, - &extra_audio_delay_ms, &total_video_delay_ms)); - EXPECT_EQ(0, extra_audio_delay_ms); - // The video delay is not allowed to change more than this in 1 second. - EXPECT_EQ(delay_ms / kSmoothingFilter, total_video_delay_ms); - - send_time_->IncreaseTimeMs(1000); - receive_time_->IncreaseTimeMs(800); - // Simulate 0 minimum delay in the VCM. - total_video_delay_ms = 0; - EXPECT_TRUE(DelayedStreams(delay_ms, 0, current_audio_delay_ms, - &extra_audio_delay_ms, &total_video_delay_ms)); - EXPECT_EQ(0, extra_audio_delay_ms); - // The video delay is not allowed to change more than this in 1 second. - EXPECT_EQ(2 * delay_ms / kSmoothingFilter, total_video_delay_ms); - - send_time_->IncreaseTimeMs(1000); - receive_time_->IncreaseTimeMs(800); - // Simulate 0 minimum delay in the VCM. - total_video_delay_ms = 0; - EXPECT_TRUE(DelayedStreams(delay_ms, 0, current_audio_delay_ms, - &extra_audio_delay_ms, &total_video_delay_ms)); - EXPECT_EQ(0, extra_audio_delay_ms); - EXPECT_EQ(3 * delay_ms / kSmoothingFilter, total_video_delay_ms); -} - -TEST_F(StreamSynchronizationTest, AudioDelay) { - int current_audio_delay_ms = 0; - int delay_ms = 200; - int extra_audio_delay_ms = 0; - int total_video_delay_ms = 0; - - EXPECT_TRUE(DelayedStreams(0, delay_ms, current_audio_delay_ms, - &extra_audio_delay_ms, &total_video_delay_ms)); - EXPECT_EQ(0, total_video_delay_ms); - // The audio delay is not allowed to change more than this in 1 second. - EXPECT_EQ(delay_ms / kSmoothingFilter, extra_audio_delay_ms); - current_audio_delay_ms = extra_audio_delay_ms; - int current_extra_delay_ms = extra_audio_delay_ms; - - send_time_->IncreaseTimeMs(1000); - receive_time_->IncreaseTimeMs(800); - EXPECT_TRUE(DelayedStreams(0, delay_ms, current_audio_delay_ms, - &extra_audio_delay_ms, &total_video_delay_ms)); - EXPECT_EQ(0, total_video_delay_ms); - // The audio delay is not allowed to change more than the half of the required - // change in delay. - EXPECT_EQ(current_extra_delay_ms + - MaxAudioDelayIncrease(current_audio_delay_ms, delay_ms), - extra_audio_delay_ms); - current_audio_delay_ms = extra_audio_delay_ms; - current_extra_delay_ms = extra_audio_delay_ms; - - send_time_->IncreaseTimeMs(1000); - receive_time_->IncreaseTimeMs(800); - EXPECT_TRUE(DelayedStreams(0, delay_ms, current_audio_delay_ms, - &extra_audio_delay_ms, &total_video_delay_ms)); - EXPECT_EQ(0, total_video_delay_ms); - // The audio delay is not allowed to change more than the half of the required - // change in delay. - EXPECT_EQ(current_extra_delay_ms + - MaxAudioDelayIncrease(current_audio_delay_ms, delay_ms), - extra_audio_delay_ms); - current_extra_delay_ms = extra_audio_delay_ms; - - // Simulate that NetEQ for some reason reduced the delay. - current_audio_delay_ms = 10; - send_time_->IncreaseTimeMs(1000); - receive_time_->IncreaseTimeMs(800); - EXPECT_TRUE(DelayedStreams(0, delay_ms, current_audio_delay_ms, - &extra_audio_delay_ms, &total_video_delay_ms)); - EXPECT_EQ(0, total_video_delay_ms); - // Since we only can ask NetEQ for a certain amount of extra delay, and - // we only measure the total NetEQ delay, we will ask for additional delay - // here to try to - EXPECT_EQ(current_extra_delay_ms + - MaxAudioDelayIncrease(current_audio_delay_ms, delay_ms), - extra_audio_delay_ms); - current_extra_delay_ms = extra_audio_delay_ms; - - // Simulate that NetEQ for some reason significantly increased the delay. - current_audio_delay_ms = 350; - send_time_->IncreaseTimeMs(1000); - receive_time_->IncreaseTimeMs(800); - EXPECT_TRUE(DelayedStreams(0, delay_ms, current_audio_delay_ms, - &extra_audio_delay_ms, &total_video_delay_ms)); - EXPECT_EQ(0, total_video_delay_ms); - // The audio delay is not allowed to change more than the half of the required - // change in delay. - EXPECT_EQ(current_extra_delay_ms + - MaxAudioDelayDecrease(current_audio_delay_ms, delay_ms), - extra_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, BaseDelay) { - int base_target_delay_ms = 2000; - int current_audio_delay_ms = 2000; - int extra_audio_delay_ms = 0; - int total_video_delay_ms = base_target_delay_ms; - sync_->SetTargetBufferingDelay(base_target_delay_ms); - // We are in sync don't change. - EXPECT_FALSE(DelayedStreams(base_target_delay_ms, base_target_delay_ms, - current_audio_delay_ms, - &extra_audio_delay_ms, &total_video_delay_ms)); - // Triggering another call with the same values. Delay should not be modified. - base_target_delay_ms = 2000; - current_audio_delay_ms = base_target_delay_ms; - total_video_delay_ms = base_target_delay_ms; - sync_->SetTargetBufferingDelay(base_target_delay_ms); - // We are in sync don't change. - EXPECT_FALSE(DelayedStreams(base_target_delay_ms, base_target_delay_ms, - current_audio_delay_ms, - &extra_audio_delay_ms, &total_video_delay_ms)); - // Changing delay value - intended to test this module only. In practice it - // would take VoE time to adapt. - base_target_delay_ms = 5000; - current_audio_delay_ms = base_target_delay_ms; - total_video_delay_ms = base_target_delay_ms; - sync_->SetTargetBufferingDelay(base_target_delay_ms); - // We are in sync don't change. - EXPECT_FALSE(DelayedStreams(base_target_delay_ms, base_target_delay_ms, - current_audio_delay_ms, - &extra_audio_delay_ms, &total_video_delay_ms)); -} - -TEST_F(StreamSynchronizationTest, BothDelayedAudioLaterWithBaseDelay) { - int base_target_delay_ms = 3000; - sync_->SetTargetBufferingDelay(base_target_delay_ms); - BothDelayedAudioLaterTest(base_target_delay_ms); -} - -TEST_F(StreamSynchronizationTest, BothDelayedAudioClockDriftWithBaseDelay) { - int base_target_delay_ms = 3000; - sync_->SetTargetBufferingDelay(base_target_delay_ms); - audio_clock_drift_ = 1.05; - BothDelayedAudioLaterTest(base_target_delay_ms); -} - -TEST_F(StreamSynchronizationTest, BothDelayedVideoClockDriftWithBaseDelay) { - int base_target_delay_ms = 3000; - sync_->SetTargetBufferingDelay(base_target_delay_ms); - video_clock_drift_ = 1.05; - BothDelayedAudioLaterTest(base_target_delay_ms); -} - -TEST_F(StreamSynchronizationTest, BothDelayedVideoLaterWithBaseDelay) { - int base_target_delay_ms = 2000; - sync_->SetTargetBufferingDelay(base_target_delay_ms); - BothDelayedVideoLaterTest(base_target_delay_ms); -} - -TEST_F(StreamSynchronizationTest, - BothDelayedVideoLaterAudioClockDriftWithBaseDelay) { - int base_target_delay_ms = 2000; - audio_clock_drift_ = 1.05; - sync_->SetTargetBufferingDelay(base_target_delay_ms); - BothDelayedVideoLaterTest(base_target_delay_ms); -} - -TEST_F(StreamSynchronizationTest, - BothDelayedVideoLaterVideoClockDriftWithBaseDelay) { - int base_target_delay_ms = 2000; - video_clock_drift_ = 1.05; - sync_->SetTargetBufferingDelay(base_target_delay_ms); - BothDelayedVideoLaterTest(base_target_delay_ms); -} - -} // namespace webrtc |