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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/mirroring/service/rtp_stream.h"
#include "base/functional/callback_helpers.h"
#include "base/logging.h"
#include "base/memory/raw_ptr.h"
#include "base/run_loop.h"
#include "base/test/mock_callback.h"
#include "base/test/simple_test_tick_clock.h"
#include "base/test/task_environment.h"
#include "base/time/time.h"
#include "media/base/mock_filters.h"
#include "media/base/video_frame.h"
#include "media/cast/cast_config.h"
#include "media/cast/sender/audio_sender.h"
#include "media/cast/sender/video_sender.h"
#include "media/cast/test/utility/audio_utility.h"
#include "media/cast/test/utility/default_config.h"
#include "media/cast/test/utility/video_utility.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using media::cast::TestAudioBusFactory;
using ::testing::_;
using ::testing::InvokeWithoutArgs;
using ::testing::StrictMock;
namespace mirroring {
namespace {
class StreamClient final : public RtpStreamClient {
public:
explicit StreamClient(base::SimpleTestTickClock* clock) : clock_(clock) {}
StreamClient(const StreamClient&) = delete;
StreamClient& operator=(const StreamClient&) = delete;
~StreamClient() override = default;
void SetVideoRtpStream(VideoRtpStream* stream) { video_stream_ = stream; }
void SetShouldDeliverFrames(bool should_deliver) {
should_deliver_frames_ = should_deliver;
}
// RtpStreamClient implementation.
void OnError(const std::string& message) override {}
void RequestRefreshFrame() override {
if (video_stream_ && should_deliver_frames_) {
video_stream_->InsertVideoFrame(CreateVideoFrame());
}
}
void CreateVideoEncodeAccelerator(
media::cast::ReceiveVideoEncodeAcceleratorCallback callback) override {}
scoped_refptr<media::VideoFrame> CreateVideoFrame() {
constexpr gfx::Size kFrameSize(640, 480);
base::TimeDelta frame_timestamp;
if (first_frame_time_.is_null()) {
first_frame_time_ = clock_->NowTicks();
frame_timestamp = base::TimeDelta();
} else {
clock_->Advance(base::Milliseconds(10));
frame_timestamp = clock_->NowTicks() - first_frame_time_;
}
auto frame = media::VideoFrame::CreateFrame(
media::PIXEL_FORMAT_I420, kFrameSize, gfx::Rect(kFrameSize), kFrameSize,
frame_timestamp);
media::cast::PopulateVideoFrame(frame.get(), 1);
frame->metadata().reference_time = clock_->NowTicks();
return frame;
}
base::WeakPtr<RtpStreamClient> GetWeakPtr() {
return weak_factory_.GetWeakPtr();
}
private:
raw_ptr<VideoRtpStream> video_stream_;
bool should_deliver_frames_ = true;
base::TimeTicks first_frame_time_;
const raw_ptr<base::SimpleTestTickClock> clock_;
base::WeakPtrFactory<StreamClient> weak_factory_{this};
};
class MockVideoSender : public media::cast::VideoSender {
public:
MockVideoSender() = default;
MOCK_METHOD(void,
InsertRawVideoFrame,
(scoped_refptr<media::VideoFrame>, base::TimeTicks),
(override));
};
class MockAudioSender : public media::cast::AudioSender {
public:
MockAudioSender() = default;
MOCK_METHOD(void,
InsertAudio,
(std::unique_ptr<media::AudioBus>, base::TimeTicks),
(override));
};
} // namespace
class RtpStreamTest : public ::testing::Test {
public:
RtpStreamTest() : client_(&testing_clock_) {
testing_clock_.Advance(base::TimeTicks::Now() - base::TimeTicks());
}
RtpStreamTest(const RtpStreamTest&) = delete;
RtpStreamTest& operator=(const RtpStreamTest&) = delete;
~RtpStreamTest() override { task_environment_.RunUntilIdle(); }
protected:
void ExpectTimerRunning(const VideoRtpStream& video_stream) {
EXPECT_TRUE(video_stream.refresh_timer_.IsRunning());
}
void ExpectTimerNotRunning(const VideoRtpStream& video_stream) {
EXPECT_FALSE(video_stream.refresh_timer_.IsRunning());
}
base::test::TaskEnvironment task_environment_{
base::test::TaskEnvironment::TimeSource::MOCK_TIME};
base::SimpleTestTickClock testing_clock_;
StreamClient client_;
};
// Test the video streaming pipeline.
TEST_F(RtpStreamTest, VideoStreaming) {
auto video_sender = std::make_unique<MockVideoSender>();
EXPECT_CALL(*video_sender, InsertRawVideoFrame(_, _)).Times(1);
VideoRtpStream video_stream(std::move(video_sender), client_.GetWeakPtr(),
base::Milliseconds(1));
client_.SetVideoRtpStream(&video_stream);
video_stream.InsertVideoFrame(client_.CreateVideoFrame());
ExpectTimerRunning(video_stream);
client_.SetVideoRtpStream(nullptr);
}
TEST_F(RtpStreamTest, VideoStreamEmitsFramesWhenNoUpdates) {
auto video_sender = std::make_unique<MockVideoSender>();
EXPECT_CALL(*video_sender, InsertRawVideoFrame(_, _)).Times(6);
VideoRtpStream video_stream(std::move(video_sender), client_.GetWeakPtr(),
base::Milliseconds(1));
client_.SetVideoRtpStream(&video_stream);
video_stream.InsertVideoFrame(client_.CreateVideoFrame());
task_environment_.FastForwardBy(base::Milliseconds(5));
ExpectTimerRunning(video_stream);
client_.SetVideoRtpStream(nullptr);
}
TEST_F(RtpStreamTest, VideoStreamDoesNotRefreshWithZeroInterval) {
auto video_sender = std::make_unique<MockVideoSender>();
EXPECT_CALL(*video_sender, InsertRawVideoFrame(_, _)).Times(1);
VideoRtpStream video_stream(std::move(video_sender), client_.GetWeakPtr(),
base::TimeDelta());
client_.SetVideoRtpStream(&video_stream);
video_stream.InsertVideoFrame(client_.CreateVideoFrame());
task_environment_.FastForwardBy(base::Milliseconds(5));
ExpectTimerNotRunning(video_stream);
client_.SetVideoRtpStream(nullptr);
}
TEST_F(RtpStreamTest, VideoStreamTimerNotRunningWhenNoFramesDelivered) {
auto video_sender = std::make_unique<MockVideoSender>();
EXPECT_CALL(*video_sender, InsertRawVideoFrame(_, _)).Times(1);
VideoRtpStream video_stream(std::move(video_sender), client_.GetWeakPtr(),
base::Milliseconds(1));
client_.SetVideoRtpStream(&video_stream);
client_.SetShouldDeliverFrames(false);
video_stream.InsertVideoFrame(client_.CreateVideoFrame());
// Fast forward by enough time for the refresh_timer_ to fire 2 times.
task_environment_.FastForwardBy(base::Milliseconds(5));
ExpectTimerNotRunning(video_stream);
client_.SetVideoRtpStream(nullptr);
}
TEST_F(RtpStreamTest, VideoStreamTimerRestartsWhenFramesDeliveredAgain) {
auto video_sender = std::make_unique<MockVideoSender>();
EXPECT_CALL(*video_sender, InsertRawVideoFrame(_, _)).Times(7);
VideoRtpStream video_stream(std::move(video_sender), client_.GetWeakPtr(),
base::Milliseconds(1));
client_.SetVideoRtpStream(&video_stream);
client_.SetShouldDeliverFrames(false);
video_stream.InsertVideoFrame(client_.CreateVideoFrame());
// Fast forward by enough time for the refresh_timer_ to fire 2 times.
task_environment_.FastForwardBy(base::Milliseconds(5));
ExpectTimerNotRunning(video_stream);
client_.SetShouldDeliverFrames(true);
// When the video stream receives a frame, it restarts the timer.
video_stream.InsertVideoFrame(client_.CreateVideoFrame());
task_environment_.FastForwardBy(base::Milliseconds(5));
ExpectTimerRunning(video_stream);
client_.SetVideoRtpStream(nullptr);
}
// Test the audio streaming pipeline.
TEST_F(RtpStreamTest, AudioStreaming) {
// Create audio data.
const base::TimeDelta kDuration = base::Milliseconds(10);
media::cast::FrameSenderConfig audio_config =
media::cast::GetDefaultAudioSenderConfig();
std::unique_ptr<media::AudioBus> audio_bus =
TestAudioBusFactory(audio_config.channels, audio_config.rtp_timebase,
TestAudioBusFactory::kMiddleANoteFreq, 0.5f)
.NextAudioBus(kDuration);
auto audio_sender = std::make_unique<MockAudioSender>();
EXPECT_CALL(*audio_sender, InsertAudio(_, _)).Times(1);
AudioRtpStream audio_stream(std::move(audio_sender), client_.GetWeakPtr());
audio_stream.InsertAudio(std::move(audio_bus), testing_clock_.NowTicks());
}
} // namespace mirroring
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