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 "media/base/video_common.h"
17 #include "pc/test/fake_video_track_renderer.h"
18 #include "pc/test/fake_video_track_source.h"
19 #include "pc/video_track_source.h"
20 #include "rtc_base/ref_counted_object.h"
21 #include "test/gtest.h"
22
23 using webrtc::FakeVideoTrackRenderer;
24 using webrtc::FakeVideoTrackSource;
25 using webrtc::MediaSourceInterface;
26 using webrtc::MediaStreamTrackInterface;
27 using webrtc::VideoTrack;
28 using webrtc::VideoTrackInterface;
29 using webrtc::VideoTrackSource;
30
31 class VideoTrackTest : public ::testing::Test {
32 public:
VideoTrackTest()33 VideoTrackTest() : frame_source_(640, 480, rtc::kNumMicrosecsPerSec / 30) {
34 static const char kVideoTrackId[] = "track_id";
35 video_track_source_ = new rtc::RefCountedObject<FakeVideoTrackSource>(
36 /*is_screencast=*/false);
37 video_track_ = VideoTrack::Create(kVideoTrackId, video_track_source_,
38 rtc::Thread::Current());
39 }
40
41 protected:
42 rtc::scoped_refptr<FakeVideoTrackSource> video_track_source_;
43 rtc::scoped_refptr<VideoTrackInterface> video_track_;
44 cricket::FakeFrameSource frame_source_;
45 };
46
47 // Test changing the source state also changes the track state.
TEST_F(VideoTrackTest,SourceStateChangeTrackState)48 TEST_F(VideoTrackTest, SourceStateChangeTrackState) {
49 EXPECT_EQ(MediaStreamTrackInterface::kLive, video_track_->state());
50 video_track_source_->SetState(MediaSourceInterface::kEnded);
51 EXPECT_EQ(MediaStreamTrackInterface::kEnded, video_track_->state());
52 }
53
54 // Test adding renderers to a video track and render to them by providing
55 // frames to the source.
TEST_F(VideoTrackTest,RenderVideo)56 TEST_F(VideoTrackTest, RenderVideo) {
57 // FakeVideoTrackRenderer register itself to |video_track_|
58 std::unique_ptr<FakeVideoTrackRenderer> renderer_1(
59 new FakeVideoTrackRenderer(video_track_.get()));
60
61 video_track_source_->InjectFrame(frame_source_.GetFrame());
62 EXPECT_EQ(1, renderer_1->num_rendered_frames());
63
64 // FakeVideoTrackRenderer register itself to |video_track_|
65 std::unique_ptr<FakeVideoTrackRenderer> renderer_2(
66 new FakeVideoTrackRenderer(video_track_.get()));
67 video_track_source_->InjectFrame(frame_source_.GetFrame());
68 EXPECT_EQ(2, renderer_1->num_rendered_frames());
69 EXPECT_EQ(1, renderer_2->num_rendered_frames());
70
71 renderer_1.reset(nullptr);
72 video_track_source_->InjectFrame(frame_source_.GetFrame());
73 EXPECT_EQ(2, renderer_2->num_rendered_frames());
74 }
75
76 // Test that disabling the track results in blacked out frames.
TEST_F(VideoTrackTest,DisableTrackBlackout)77 TEST_F(VideoTrackTest, DisableTrackBlackout) {
78 std::unique_ptr<FakeVideoTrackRenderer> renderer(
79 new FakeVideoTrackRenderer(video_track_.get()));
80
81 video_track_source_->InjectFrame(frame_source_.GetFrame());
82 EXPECT_EQ(1, renderer->num_rendered_frames());
83 EXPECT_FALSE(renderer->black_frame());
84
85 video_track_->set_enabled(false);
86 video_track_source_->InjectFrame(frame_source_.GetFrame());
87 EXPECT_EQ(2, renderer->num_rendered_frames());
88 EXPECT_TRUE(renderer->black_frame());
89
90 video_track_->set_enabled(true);
91 video_track_source_->InjectFrame(frame_source_.GetFrame());
92 EXPECT_EQ(3, renderer->num_rendered_frames());
93 EXPECT_FALSE(renderer->black_frame());
94 }
95