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|
/*
* 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, NoAudioIncomingUnboundedIncrease) {
// Test how audio delay can grow unbounded when audio stops coming in.
// This is handled in caller of RtpStreamsSynchronizer, for example in
// RtpStreamsSynchronizer by not updating delays when audio samples stop
// coming in.
const int kVideoDelayMs = 300;
const int kAudioDelayMs = 100;
int current_audio_delay_ms = kAudioDelayMs;
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 - kAudioDelayMs) / kSmoothingFilter,
total_audio_delay_ms);
int last_total_audio_delay_ms = total_audio_delay_ms;
// Set new current audio delay: simulate audio samples are flowing in.
current_audio_delay_ms = total_audio_delay_ms;
clock_sender_.AdvanceTimeMilliseconds(1000);
clock_receiver_.AdvanceTimeMilliseconds(1000);
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 no incoming audio by not update audio delay.
const int kSimulationSecs = 300; // 5min
const int kMaxDeltaDelayMs = 10000; // max delay for audio in webrtc
for (auto time_secs = 0; time_secs < kSimulationSecs; time_secs++) {
clock_sender_.AdvanceTimeMilliseconds(1000);
clock_receiver_.AdvanceTimeMilliseconds(1000);
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);
// Audio delay does not go above kMaxDeltaDelayMs.
EXPECT_EQ(std::min(kMaxDeltaDelayMs,
last_total_audio_delay_ms +
MaxAudioDelayChangeMs(current_audio_delay_ms,
kVideoDelayMs)),
total_audio_delay_ms);
last_total_audio_delay_ms = total_audio_delay_ms;
}
// By now the audio delay has grown unbounded to kMaxDeltaDelayMs.
EXPECT_EQ(kMaxDeltaDelayMs, last_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
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