1 /*
2 * Copyright 2012 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include "pc/video_track.h"
12
13 #include <memory>
14
15 #include "media/base/fake_frame_source.h"
16 #include "pc/test/fake_video_track_renderer.h"
17 #include "pc/test/fake_video_track_source.h"
18 #include "pc/video_track_source.h"
19 #include "rtc_base/time_utils.h"
20 #include "test/gtest.h"
21
22 using webrtc::FakeVideoTrackRenderer;
23 using webrtc::FakeVideoTrackSource;
24 using webrtc::MediaSourceInterface;
25 using webrtc::MediaStreamTrackInterface;
26 using webrtc::VideoTrack;
27 using webrtc::VideoTrackInterface;
28 using webrtc::VideoTrackSource;
29
30 class VideoTrackTest : public ::testing::Test {
31 public:
VideoTrackTest()32 VideoTrackTest() : frame_source_(640, 480, rtc::kNumMicrosecsPerSec / 30) {
33 static const char kVideoTrackId[] = "track_id";
34 video_track_source_ = rtc::make_ref_counted<FakeVideoTrackSource>(
35 /*is_screencast=*/false);
36 video_track_ = VideoTrack::Create(kVideoTrackId, video_track_source_,
37 rtc::Thread::Current());
38 }
39
40 protected:
41 rtc::AutoThread main_thread_;
42 rtc::scoped_refptr<FakeVideoTrackSource> video_track_source_;
43 rtc::scoped_refptr<VideoTrack> video_track_;
44 cricket::FakeFrameSource frame_source_;
45 };
46
47 // VideoTrack::Create will create an API proxy around the source object.
48 // The `GetSource` method provides access to the proxy object intented for API
49 // use while the GetSourceInternal() provides direct access to the source object
50 // as provided to the `VideoTrack::Create` factory function.
TEST_F(VideoTrackTest,CheckApiProxyAndInternalSource)51 TEST_F(VideoTrackTest, CheckApiProxyAndInternalSource) {
52 EXPECT_NE(video_track_->GetSource(), video_track_source_.get());
53 EXPECT_EQ(video_track_->GetSourceInternal(), video_track_source_.get());
54 }
55
56 // Test changing the source state also changes the track state.
TEST_F(VideoTrackTest,SourceStateChangeTrackState)57 TEST_F(VideoTrackTest, SourceStateChangeTrackState) {
58 EXPECT_EQ(MediaStreamTrackInterface::kLive, video_track_->state());
59 video_track_source_->SetState(MediaSourceInterface::kEnded);
60 EXPECT_EQ(MediaStreamTrackInterface::kEnded, video_track_->state());
61 }
62
63 // Test adding renderers to a video track and render to them by providing
64 // frames to the source.
TEST_F(VideoTrackTest,RenderVideo)65 TEST_F(VideoTrackTest, RenderVideo) {
66 // FakeVideoTrackRenderer register itself to `video_track_`
67 std::unique_ptr<FakeVideoTrackRenderer> renderer_1(
68 new FakeVideoTrackRenderer(video_track_.get()));
69
70 video_track_source_->InjectFrame(frame_source_.GetFrame());
71 EXPECT_EQ(1, renderer_1->num_rendered_frames());
72
73 // FakeVideoTrackRenderer register itself to `video_track_`
74 std::unique_ptr<FakeVideoTrackRenderer> renderer_2(
75 new FakeVideoTrackRenderer(video_track_.get()));
76 video_track_source_->InjectFrame(frame_source_.GetFrame());
77 EXPECT_EQ(2, renderer_1->num_rendered_frames());
78 EXPECT_EQ(1, renderer_2->num_rendered_frames());
79
80 renderer_1.reset(nullptr);
81 video_track_source_->InjectFrame(frame_source_.GetFrame());
82 EXPECT_EQ(2, renderer_2->num_rendered_frames());
83 }
84
85 // Test that disabling the track results in blacked out frames.
TEST_F(VideoTrackTest,DisableTrackBlackout)86 TEST_F(VideoTrackTest, DisableTrackBlackout) {
87 std::unique_ptr<FakeVideoTrackRenderer> renderer(
88 new FakeVideoTrackRenderer(video_track_.get()));
89
90 video_track_source_->InjectFrame(frame_source_.GetFrame());
91 EXPECT_EQ(1, renderer->num_rendered_frames());
92 EXPECT_FALSE(renderer->black_frame());
93
94 video_track_->set_enabled(false);
95 video_track_source_->InjectFrame(frame_source_.GetFrame());
96 EXPECT_EQ(2, renderer->num_rendered_frames());
97 EXPECT_TRUE(renderer->black_frame());
98
99 video_track_->set_enabled(true);
100 video_track_source_->InjectFrame(frame_source_.GetFrame());
101 EXPECT_EQ(3, renderer->num_rendered_frames());
102 EXPECT_FALSE(renderer->black_frame());
103 }
104