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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/renderer/media/rtc_video_decoder.h"
#include <deque>
#include "base/message_loop.h"
#include "base/task.h"
#include "media/base/callback.h"
#include "media/base/demuxer.h"
#include "media/base/filter_host.h"
#include "media/base/filters.h"
#include "media/base/limits.h"
#include "media/base/video_frame.h"
#include "media/base/video_util.h"
#include "third_party/libjingle/source/talk/session/phone/videoframe.h"
using media::CopyUPlane;
using media::CopyVPlane;
using media::CopyYPlane;
using media::DemuxerStream;
using media::FilterCallback;
using media::FilterStatusCB;
using media::kNoTimestamp;
using media::Limits;
using media::PIPELINE_OK;
using media::StatisticsCallback;
using media::VideoDecoder;
using media::VideoFrame;
RTCVideoDecoder::RTCVideoDecoder(MessageLoop* message_loop,
const std::string& url)
: message_loop_(message_loop),
width_(176),
height_(144),
url_(url),
state_(kUnInitialized) {
}
RTCVideoDecoder::~RTCVideoDecoder() {}
void RTCVideoDecoder::Initialize(DemuxerStream* demuxer_stream,
FilterCallback* filter_callback,
StatisticsCallback* stat_callback) {
if (MessageLoop::current() != message_loop_) {
message_loop_->PostTask(
FROM_HERE,
NewRunnableMethod(this,
&RTCVideoDecoder::Initialize,
make_scoped_refptr(demuxer_stream),
filter_callback, stat_callback));
return;
}
DCHECK_EQ(MessageLoop::current(), message_loop_);
lock_.Acquire();
frame_queue_available_.clear();
lock_.Release();
state_ = kNormal;
filter_callback->Run();
delete filter_callback;
// TODO(acolwell): Implement stats.
delete stat_callback;
}
void RTCVideoDecoder::Play(FilterCallback* callback) {
if (MessageLoop::current() != message_loop_) {
message_loop_->PostTask(FROM_HERE,
NewRunnableMethod(this,
&RTCVideoDecoder::Play,
callback));
return;
}
DCHECK_EQ(MessageLoop::current(), message_loop_);
VideoDecoder::Play(callback);
}
void RTCVideoDecoder::Pause(FilterCallback* callback) {
if (MessageLoop::current() != message_loop_) {
message_loop_->PostTask(FROM_HERE,
NewRunnableMethod(this,
&RTCVideoDecoder::Pause,
callback));
return;
}
DCHECK_EQ(MessageLoop::current(), message_loop_);
state_ = kPaused;
VideoDecoder::Pause(callback);
}
void RTCVideoDecoder::Stop(FilterCallback* callback) {
if (MessageLoop::current() != message_loop_) {
message_loop_->PostTask(FROM_HERE,
NewRunnableMethod(this,
&RTCVideoDecoder::Stop,
callback));
return;
}
DCHECK_EQ(MessageLoop::current(), message_loop_);
state_ = kStopped;
VideoDecoder::Stop(callback);
}
void RTCVideoDecoder::Seek(base::TimeDelta time, const FilterStatusCB& cb) {
if (MessageLoop::current() != message_loop_) {
message_loop_->PostTask(FROM_HERE,
NewRunnableMethod(this, &RTCVideoDecoder::Seek,
time, cb));
return;
}
DCHECK_EQ(MessageLoop::current(), message_loop_);
state_ = kSeeking;
// Create output buffer pool and pass the frames to renderer
// so that the renderer can complete the seeking
for (size_t i = 0; i < Limits::kMaxVideoFrames; ++i) {
VideoFrameReady(VideoFrame::CreateBlackFrame(width_, height_));
}
state_ = kNormal;
cb.Run(PIPELINE_OK);
}
void RTCVideoDecoder::ProduceVideoFrame(
scoped_refptr<VideoFrame> video_frame) {
if (MessageLoop::current() != message_loop_) {
message_loop_->PostTask(
FROM_HERE,
NewRunnableMethod(this,
&RTCVideoDecoder::ProduceVideoFrame, video_frame));
return;
}
DCHECK_EQ(MessageLoop::current(), message_loop_);
base::AutoLock auto_lock(lock_);
frame_queue_available_.push_back(video_frame);
}
int RTCVideoDecoder::width() {
return width_;
}
int RTCVideoDecoder::height() {
return height_;
}
bool RTCVideoDecoder::SetSize(int width, int height, int reserved) {
width_ = width;
height_ = height;
host()->SetVideoSize(width_, height_);
return true;
}
bool RTCVideoDecoder::RenderFrame(const cricket::VideoFrame* frame) {
DCHECK(frame);
if (state_ != kNormal)
return true;
// This is called from another thread
scoped_refptr<VideoFrame> video_frame;
{
base::AutoLock auto_lock(lock_);
if (frame_queue_available_.size() == 0) {
return true;
}
video_frame = frame_queue_available_.front();
frame_queue_available_.pop_front();
}
// Check if there's a size change
if (video_frame->width() != width_ || video_frame->height() != height_) {
// Allocate new buffer based on the new size
video_frame = VideoFrame::CreateFrame(VideoFrame::YV12,
width_,
height_,
kNoTimestamp,
kNoTimestamp);
}
video_frame->SetTimestamp(host()->GetTime());
video_frame->SetDuration(base::TimeDelta::FromMilliseconds(30));
int y_rows = frame->GetHeight();
int uv_rows = frame->GetHeight() / 2; // YV12 format.
CopyYPlane(frame->GetYPlane(), frame->GetYPitch(), y_rows, video_frame);
CopyUPlane(frame->GetUPlane(), frame->GetUPitch(), uv_rows, video_frame);
CopyVPlane(frame->GetVPlane(), frame->GetVPitch(), uv_rows, video_frame);
if (MessageLoop::current() != message_loop_) {
message_loop_->PostTask(
FROM_HERE,
NewRunnableMethod(this,
&RTCVideoDecoder::VideoFrameReady,
video_frame));
} else {
VideoFrameReady(video_frame);
}
return true;
}
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