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 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 27 TestVideoFrameProvider::~TestVideoFrameProvider() {} 28 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 38 void TestVideoFrameProvider::Stop() { 39 DVLOG(1) << "TestVideoFrameProvider::Stop"; 40 DCHECK(message_loop_proxy_->BelongsToCurrentThread()); 41 state_ = kStopped; 42 } 43 44 void TestVideoFrameProvider::Play() { 45 DVLOG(1) << "TestVideoFrameProvider::Play"; 46 DCHECK(message_loop_proxy_->BelongsToCurrentThread()); 47 if (state_ == kPaused) 48 state_ = kStarted; 49 } 50 51 void TestVideoFrameProvider::Pause() { 52 DVLOG(1) << "TestVideoFrameProvider::Pause"; 53 DCHECK(message_loop_proxy_->BelongsToCurrentThread()); 54 if (state_ == kStarted) 55 state_ = kPaused; 56 } 57 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
