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| 1 // Copyright (c) 2012 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 "media/filters/video_frame_generator.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/message_loop.h" | |
| 9 #include "media/base/demuxer_stream.h" | |
| 10 #include "media/base/video_frame.h" | |
| 11 | |
| 12 namespace media { | |
| 13 | |
| 14 VideoFrameGenerator::VideoFrameGenerator( | |
| 15 const scoped_refptr<base::MessageLoopProxy>& message_loop_proxy, | |
| 16 const gfx::Size& size, | |
| 17 const base::TimeDelta& frame_duration) | |
| 18 : message_loop_proxy_(message_loop_proxy), | |
| 19 size_(size), | |
| 20 stopped_(true), | |
| 21 frame_duration_(frame_duration) { | |
| 22 } | |
| 23 | |
| 24 void VideoFrameGenerator::Initialize( | |
| 25 const scoped_refptr<DemuxerStream>& stream, | |
| 26 const PipelineStatusCB& status_cb, | |
| 27 const StatisticsCB& statistics_cb) { | |
| 28 message_loop_proxy_->PostTask( | |
| 29 FROM_HERE, | |
| 30 base::Bind(&VideoFrameGenerator::InitializeOnDecoderThread, | |
| 31 this, stream, status_cb, statistics_cb)); | |
| 32 } | |
| 33 | |
| 34 void VideoFrameGenerator::Read(const ReadCB& read_cb) { | |
| 35 message_loop_proxy_->PostTask( | |
| 36 FROM_HERE, | |
| 37 base::Bind(&VideoFrameGenerator::ReadOnDecoderThread, this, read_cb)); | |
| 38 } | |
| 39 | |
| 40 void VideoFrameGenerator::Reset(const base::Closure& closure) { | |
| 41 message_loop_proxy_->PostTask( | |
| 42 FROM_HERE, | |
| 43 base::Bind(&VideoFrameGenerator::ResetOnDecoderThread, this, closure)); | |
| 44 } | |
| 45 | |
| 46 void VideoFrameGenerator::Stop(const base::Closure& closure) { | |
| 47 message_loop_proxy_->PostTask( | |
| 48 FROM_HERE, | |
| 49 base::Bind(&VideoFrameGenerator::StopOnDecoderThread, this, closure)); | |
| 50 } | |
| 51 | |
| 52 VideoFrameGenerator::~VideoFrameGenerator() {} | |
| 53 | |
| 54 void VideoFrameGenerator::InitializeOnDecoderThread( | |
| 55 const scoped_refptr<DemuxerStream>& /* stream */, | |
| 56 const PipelineStatusCB& status_cb, | |
| 57 const StatisticsCB& statistics_cb) { | |
| 58 DVLOG(1) << "InitializeOnDecoderThread"; | |
| 59 DCHECK(message_loop_proxy_->BelongsToCurrentThread()); | |
| 60 | |
| 61 status_cb.Run(PIPELINE_OK); | |
| 62 stopped_ = false; | |
| 63 } | |
| 64 | |
| 65 void VideoFrameGenerator::ReadOnDecoderThread(const ReadCB& read_cb) { | |
| 66 DCHECK(message_loop_proxy_->BelongsToCurrentThread()); | |
| 67 CHECK(!read_cb.is_null()); | |
| 68 if (stopped_) | |
| 69 return; | |
| 70 | |
| 71 // Always allocate a new frame. | |
| 72 // | |
| 73 // TODO(scherkus): migrate this to proper buffer recycling. | |
| 74 scoped_refptr<VideoFrame> video_frame = | |
| 75 VideoFrame::CreateFrame(VideoFrame::YV12, size_, gfx::Rect(size_), size_, | |
| 76 current_time_); | |
| 77 current_time_ += frame_duration_; | |
| 78 | |
| 79 // TODO(wjia): set pixel data to pre-defined patterns if it's desired to | |
| 80 // verify frame content. | |
| 81 | |
| 82 read_cb.Run(kOk, video_frame); | |
| 83 } | |
| 84 | |
| 85 void VideoFrameGenerator::ResetOnDecoderThread(const base::Closure& closure) { | |
| 86 DVLOG(1) << "ResetOnDecoderThread"; | |
| 87 DCHECK(message_loop_proxy_->BelongsToCurrentThread()); | |
| 88 current_time_ = base::TimeDelta(); | |
| 89 closure.Run(); | |
| 90 } | |
| 91 | |
| 92 void VideoFrameGenerator::StopOnDecoderThread(const base::Closure& closure) { | |
| 93 DVLOG(1) << "StopOnDecoderThread"; | |
| 94 DCHECK(message_loop_proxy_->BelongsToCurrentThread()); | |
| 95 stopped_ = true; | |
| 96 current_time_ = base::TimeDelta(); | |
| 97 closure.Run(); | |
| 98 } | |
| 99 | |
| 100 } // namespace media | |
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Chromium Code Reviews
Issue 12320078:
Delete old RTCVideoDecoder code path. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master