1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "content/test/test_video_frame_provider.h"
6
7 #include "base/bind.h"
8 #include "base/location.h"
9 #include "base/message_loop/message_loop_proxy.h"
10 #include "media/base/video_frame.h"
11
12 namespace content {
13
TestVideoFrameProvider(const gfx::Size & size,const base::TimeDelta & frame_duration,const base::Closure & error_cb,const VideoFrameProvider::RepaintCB & repaint_cb)14 TestVideoFrameProvider::TestVideoFrameProvider(
15 const gfx::Size& size,
16 const base::TimeDelta& frame_duration,
17 const base::Closure& error_cb,
18 const VideoFrameProvider::RepaintCB& repaint_cb)
19 : message_loop_proxy_(base::MessageLoopProxy::current()),
20 size_(size),
21 state_(kStopped),
22 frame_duration_(frame_duration),
23 error_cb_(error_cb),
24 repaint_cb_(repaint_cb) {
25 }
26
~TestVideoFrameProvider()27 TestVideoFrameProvider::~TestVideoFrameProvider() {}
28
Start()29 void TestVideoFrameProvider::Start() {
30 DVLOG(1) << "TestVideoFrameProvider::Start";
31 DCHECK(message_loop_proxy_->BelongsToCurrentThread());
32 state_ = kStarted;
33 message_loop_proxy_->PostTask(
34 FROM_HERE,
35 base::Bind(&TestVideoFrameProvider::GenerateFrame, this));
36 }
37
Stop()38 void TestVideoFrameProvider::Stop() {
39 DVLOG(1) << "TestVideoFrameProvider::Stop";
40 DCHECK(message_loop_proxy_->BelongsToCurrentThread());
41 state_ = kStopped;
42 }
43
Play()44 void TestVideoFrameProvider::Play() {
45 DVLOG(1) << "TestVideoFrameProvider::Play";
46 DCHECK(message_loop_proxy_->BelongsToCurrentThread());
47 if (state_ == kPaused)
48 state_ = kStarted;
49 }
50
Pause()51 void TestVideoFrameProvider::Pause() {
52 DVLOG(1) << "TestVideoFrameProvider::Pause";
53 DCHECK(message_loop_proxy_->BelongsToCurrentThread());
54 if (state_ == kStarted)
55 state_ = kPaused;
56 }
57
GenerateFrame()58 void TestVideoFrameProvider::GenerateFrame() {
59 DVLOG(1) << "TestVideoFrameProvider::GenerateFrame";
60 DCHECK(message_loop_proxy_->BelongsToCurrentThread());
61 if (state_ == kStopped)
62 return;
63
64 if (state_ == kStarted) {
65 // Always allocate a new frame filled with white color.
66 scoped_refptr<media::VideoFrame> video_frame =
67 media::VideoFrame::CreateColorFrame(
68 size_, 255, 128, 128, current_time_);
69
70 // TODO(wjia): set pixel data to pre-defined patterns if it's desired to
71 // verify frame content.
72
73 repaint_cb_.Run(video_frame);
74 }
75
76 current_time_ += frame_duration_;
77 message_loop_proxy_->PostDelayedTask(
78 FROM_HERE,
79 base::Bind(&TestVideoFrameProvider::GenerateFrame, this),
80 frame_duration_);
81 }
82
83 } // namespace content
84