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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/peerconnection/rtc_rtp_receiver_impl.h"
#include <memory>
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/memory/scoped_refptr.h"
#include "base/run_loop.h"
#include "base/synchronization/waitable_event.h"
#include "base/task/single_thread_task_runner.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/public/platform/scheduler/test/renderer_scheduler_test_support.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/web/web_heap.h"
#include "third_party/blink/renderer/modules/peerconnection/mock_peer_connection_dependency_factory.h"
#include "third_party/blink/renderer/modules/peerconnection/mock_peer_connection_impl.h"
#include "third_party/blink/renderer/modules/peerconnection/test_webrtc_stats_report_obtainer.h"
#include "third_party/blink/renderer/modules/peerconnection/testing/mock_rtp_receiver.h"
#include "third_party/blink/renderer/modules/peerconnection/webrtc_media_stream_track_adapter_map.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_component.h"
#include "third_party/blink/renderer/platform/peerconnection/rtc_stats.h"
#include "third_party/blink/renderer/platform/testing/io_task_runner_testing_platform_support.h"
#include "third_party/blink/renderer/platform/testing/task_environment.h"
#include "third_party/webrtc/api/stats/rtc_stats_report.h"
#include "third_party/webrtc/api/stats/rtcstats_objects.h"
namespace blink {
class RTCRtpReceiverImplTest : public ::testing::Test {
public:
void SetUp() override {
dependency_factory_ =
MakeGarbageCollected<MockPeerConnectionDependencyFactory>();
main_thread_ = blink::scheduler::GetSingleThreadTaskRunnerForTesting();
track_map_ = base::MakeRefCounted<blink::WebRtcMediaStreamTrackAdapterMap>(
dependency_factory_.Get(), main_thread_);
peer_connection_ =
new webrtc::RefCountedObject<blink::MockPeerConnectionImpl>(
dependency_factory_.Get(), nullptr);
}
void TearDown() override {
receiver_.reset();
// Syncing up with the signaling thread ensures any pending operations on
// that thread are executed. If they post back to the main thread, such as
// the sender's destructor traits, this is allowed to execute before the
// test shuts down the threads.
SyncWithSignalingThread();
blink::WebHeap::CollectAllGarbageForTesting();
}
// Wait for the signaling thread to perform any queued tasks, executing tasks
// posted to the current thread in the meantime while waiting.
void SyncWithSignalingThread() const {
base::RunLoop run_loop;
dependency_factory_->GetWebRtcSignalingTaskRunner()->PostTask(
FROM_HERE, run_loop.QuitClosure());
run_loop.Run();
}
std::unique_ptr<RTCRtpReceiverImpl> CreateReceiver(
scoped_refptr<webrtc::MediaStreamTrackInterface> webrtc_track,
bool require_encoded_insertable_streams = false) {
std::unique_ptr<blink::WebRtcMediaStreamTrackAdapterMap::AdapterRef>
track_ref;
base::RunLoop run_loop;
dependency_factory_->GetWebRtcSignalingTaskRunner()->PostTask(
FROM_HERE,
base::BindOnce(&RTCRtpReceiverImplTest::CreateReceiverOnSignalingThread,
base::Unretained(this), std::move(webrtc_track),
base::Unretained(&track_ref),
base::Unretained(&run_loop)));
run_loop.Run();
DCHECK(mock_webrtc_receiver_);
DCHECK(track_ref);
blink::RtpReceiverState state(
main_thread_, dependency_factory_->GetWebRtcSignalingTaskRunner(),
mock_webrtc_receiver_.get(), std::move(track_ref), {});
state.Initialize();
return std::make_unique<RTCRtpReceiverImpl>(
peer_connection_, std::move(state), require_encoded_insertable_streams,
/*decode_metronome=*/nullptr);
}
scoped_refptr<blink::TestWebRTCStatsReportObtainer> GetStats() {
scoped_refptr<blink::TestWebRTCStatsReportObtainer> obtainer =
base::MakeRefCounted<TestWebRTCStatsReportObtainer>();
receiver_->GetStats(obtainer->GetStatsCallbackWrapper());
return obtainer;
}
protected:
void CreateReceiverOnSignalingThread(
scoped_refptr<webrtc::MediaStreamTrackInterface> webrtc_track,
std::unique_ptr<blink::WebRtcMediaStreamTrackAdapterMap::AdapterRef>*
track_ref,
base::RunLoop* run_loop) {
mock_webrtc_receiver_ = new webrtc::RefCountedObject<MockRtpReceiver>();
*track_ref = track_map_->GetOrCreateRemoteTrackAdapter(webrtc_track);
run_loop->Quit();
}
test::TaskEnvironment task_environment_;
ScopedTestingPlatformSupport<IOTaskRunnerTestingPlatformSupport> platform_;
Persistent<blink::MockPeerConnectionDependencyFactory> dependency_factory_;
scoped_refptr<base::SingleThreadTaskRunner> main_thread_;
scoped_refptr<blink::WebRtcMediaStreamTrackAdapterMap> track_map_;
webrtc::scoped_refptr<blink::MockPeerConnectionImpl> peer_connection_;
webrtc::scoped_refptr<MockRtpReceiver> mock_webrtc_receiver_;
std::unique_ptr<RTCRtpReceiverImpl> receiver_;
};
TEST_F(RTCRtpReceiverImplTest, CreateReceiver) {
scoped_refptr<blink::MockWebRtcAudioTrack> webrtc_track =
blink::MockWebRtcAudioTrack::Create("webrtc_track");
receiver_ = CreateReceiver(webrtc_track);
EXPECT_FALSE(!receiver_->Track());
EXPECT_EQ(receiver_->Track()->Id().Utf8(), webrtc_track->id());
EXPECT_EQ(receiver_->state().track_ref()->webrtc_track().get(),
webrtc_track.get());
EXPECT_TRUE(receiver_->GetEncodedAudioStreamTransformer());
EXPECT_FALSE(receiver_->GetEncodedVideoStreamTransformer());
}
TEST_F(RTCRtpReceiverImplTest, ShallowCopy) {
scoped_refptr<blink::MockWebRtcAudioTrack> webrtc_track =
blink::MockWebRtcAudioTrack::Create("webrtc_track");
receiver_ = CreateReceiver(webrtc_track);
auto copy = std::make_unique<RTCRtpReceiverImpl>(*receiver_);
EXPECT_EQ(receiver_->state().track_ref()->webrtc_track().get(),
webrtc_track.get());
const auto& webrtc_receiver = receiver_->state().webrtc_receiver();
auto web_track_unique_id = receiver_->Track()->UniqueId();
// Copy is identical to original.
EXPECT_EQ(copy->state().webrtc_receiver(), webrtc_receiver);
EXPECT_EQ(copy->state().track_ref()->webrtc_track().get(),
webrtc_track.get());
EXPECT_EQ(copy->Track()->UniqueId(), web_track_unique_id);
// Copy keeps the internal state alive.
receiver_.reset();
EXPECT_EQ(copy->state().webrtc_receiver(), webrtc_receiver);
EXPECT_EQ(copy->state().track_ref()->webrtc_track().get(),
webrtc_track.get());
EXPECT_EQ(copy->Track()->UniqueId(), web_track_unique_id);
}
TEST_F(RTCRtpReceiverImplTest, GetStats) {
scoped_refptr<blink::MockWebRtcAudioTrack> webrtc_track =
blink::MockWebRtcAudioTrack::Create("webrtc_track");
receiver_ = CreateReceiver(webrtc_track);
// Make the mock return a blink version of the |webtc_report|. The mock does
// not perform any stats filtering, we just set it to a dummy value.
webrtc::scoped_refptr<webrtc::RTCStatsReport> webrtc_report =
webrtc::RTCStatsReport::Create(webrtc::Timestamp::Micros(0));
webrtc_report->AddStats(std::make_unique<webrtc::RTCInboundRtpStreamStats>(
"stats-id", webrtc::Timestamp::Micros(1234)));
peer_connection_->SetGetStatsReport(webrtc_report.get());
auto obtainer = GetStats();
// Make sure the operation is async.
EXPECT_FALSE(obtainer->report());
// Wait for the report, this performs the necessary run-loop.
auto* report = obtainer->WaitForReport();
EXPECT_TRUE(report);
}
TEST_F(RTCRtpReceiverImplTest, CreateReceiverWithInsertableStreams) {
scoped_refptr<blink::MockWebRtcAudioTrack> webrtc_track =
blink::MockWebRtcAudioTrack::Create("webrtc_track");
receiver_ = CreateReceiver(webrtc_track, true);
EXPECT_TRUE(receiver_->GetEncodedAudioStreamTransformer());
// There should be no video transformer in audio receivers.
EXPECT_FALSE(receiver_->GetEncodedVideoStreamTransformer());
}
} // namespace blink
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