Delete old RTCVideoDecoder code path.

content/renderer/media/rtc_video_decoder.cc

-// Copyright (c) 2012 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 <algorithm>
-
-#include "base/bind.h"
-#include "base/callback.h"
-#include "base/message_loop.h"
-#include "media/base/demuxer.h"
-#include "media/base/limits.h"
-#include "media/base/video_frame.h"
-#include "media/base/video_util.h"
-#include "third_party/libjingle/source/talk/base/timeutils.h"
-#include "third_party/libjingle/source/talk/media/base/videoframe.h"
-
-using media::CopyUPlane;
-using media::CopyVPlane;
-using media::CopyYPlane;
-using media::DemuxerStream;
-using media::kNoTimestamp;
-using media::PIPELINE_OK;
-using media::PipelineStatusCB;
-using media::StatisticsCB;
-using media::VideoDecoder;
-
-namespace content {
-
-RTCVideoDecoder::RTCVideoDecoder(base::TaskRunner* video_decoder_thread,
-                                 base::TaskRunner* main_thread,
-                                 webrtc::VideoTrackInterface* video_track)
-    : video_decoder_thread_(video_decoder_thread),
-      main_thread_(main_thread),
-      visible_size_(640, 480),
-      state_(kUnInitialized),
-      got_first_frame_(false),
-      video_track_(video_track) {
-}
-
-void RTCVideoDecoder::Initialize(const scoped_refptr<DemuxerStream>& stream,
-                                 const PipelineStatusCB& status_cb,
-                                 const StatisticsCB& statistics_cb) {
-  main_thread_->PostTask(
-      FROM_HERE,
-      base::Bind(&RTCVideoDecoder::RegisterToVideoTrack, this));
-  if (!video_decoder_thread_->RunsTasksOnCurrentThread()) {
-    video_decoder_thread_->PostTask(
-        FROM_HERE,
-        base::Bind(&RTCVideoDecoder::Initialize, this,
-                   stream, status_cb, statistics_cb));
-    return;
-  }
-
-  state_ = kNormal;
-  status_cb.Run(PIPELINE_OK);
-
-  // TODO(acolwell): Implement stats.
-}
-
-void RTCVideoDecoder::Read(const ReadCB& read_cb) {
-  if (!video_decoder_thread_->RunsTasksOnCurrentThread()) {
-    video_decoder_thread_->PostTask(
-        FROM_HERE,
-        base::Bind(&RTCVideoDecoder::Read, this, read_cb));
-    return;
-  }
-
-  base::AutoLock auto_lock(lock_);
-  CHECK(read_cb_.is_null());
-
-  if (state_ == kStopped) {
-    read_cb.Run(kOk, NULL);
-    return;
-  }
-
-  read_cb_ = read_cb;
-}
-
-void RTCVideoDecoder::Reset(const base::Closure& closure) {
-  if (!video_decoder_thread_->RunsTasksOnCurrentThread()) {
-    video_decoder_thread_->PostTask(
-        FROM_HERE,
-        base::Bind(&RTCVideoDecoder::Reset, this, closure));
-    return;
-  }
-
-  CancelPendingRead();
-  closure.Run();
-}
-
-void RTCVideoDecoder::Stop(const base::Closure& closure) {
-  main_thread_->PostTask(
-      FROM_HERE,
-      base::Bind(&RTCVideoDecoder::DeregisterFromVideoTrack, this));
-  if (!video_decoder_thread_->RunsTasksOnCurrentThread()) {
-    video_decoder_thread_->PostTask(
-        FROM_HERE, base::Bind(&RTCVideoDecoder::Stop, this, closure));
-    return;
-  }
-
-  state_ = kStopped;
-  CancelPendingRead();
-  closure.Run();
-}
-
-void RTCVideoDecoder::SetSize(int width, int height) {
-  visible_size_.SetSize(width, height);
-}
-
-// TODO(wjia): this function can be split into two parts so that the |lock_|
-// can be removed.
-// First creates media::VideoFrame, then post a task onto |message_loop_|
-// to deliver that frame.
-void RTCVideoDecoder::RenderFrame(const cricket::VideoFrame* frame) {
-  // Called from libjingle thread.
-  DCHECK(frame);
-
-  base::TimeDelta timestamp = base::TimeDelta::FromMilliseconds(
-      frame->GetTimeStamp() / talk_base::kNumNanosecsPerMillisec);
-
-  ReadCB read_cb;
-  {
-    base::AutoLock auto_lock(lock_);
-    if (read_cb_.is_null() || state_ != kNormal) {
-      // TODO(ronghuawu): revisit TS adjustment when crbug.com/111672 is
-      // resolved.
-      if (got_first_frame_) {
-        start_time_ += timestamp - last_frame_timestamp_;
-      }
-      last_frame_timestamp_ = timestamp;
-      return;
-    }
-    std::swap(read_cb, read_cb_);
-  }
-
-  // Rebase timestamp with zero as starting point.
-  if (!got_first_frame_) {
-    start_time_ = timestamp;
-    got_first_frame_ = true;
-  }
-
-  // Always allocate a new frame.
-  //
-  // TODO(scherkus): migrate this to proper buffer recycling.
-  scoped_refptr<media::VideoFrame> video_frame =
-      media::VideoFrame::CreateFrame(media::VideoFrame::YV12,
-                                     visible_size_,
-                                     gfx::Rect(visible_size_),
-                                     visible_size_,
-                                     timestamp - start_time_);
-  last_frame_timestamp_ = timestamp;
-
-  // Aspect ratio unsupported; DCHECK when there are non-square pixels.
-  DCHECK_EQ(frame->GetPixelWidth(), 1u);
-  DCHECK_EQ(frame->GetPixelHeight(), 1u);
-
-  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);
-
-  read_cb.Run(kOk, video_frame);
-}
-
-void RTCVideoDecoder::CancelPendingRead() {
-  DCHECK(video_decoder_thread_->RunsTasksOnCurrentThread());
-  ReadCB read_cb;
-  {
-    base::AutoLock auto_lock(lock_);
-    std::swap(read_cb, read_cb_);
-  }
-
-  if (!read_cb.is_null()) {
-    read_cb.Run(kOk, NULL);
-  }
-}
-
-void RTCVideoDecoder::RegisterToVideoTrack() {
-  DCHECK(main_thread_->RunsTasksOnCurrentThread());
-  if (video_track_)
-    video_track_->AddRenderer(this);
-}
-
-void RTCVideoDecoder::DeregisterFromVideoTrack() {
-  DCHECK(main_thread_->RunsTasksOnCurrentThread());
-  if (video_track_) {
-    video_track_->RemoveRenderer(this);
-    video_track_ = NULL;
-  }
-}
-
-RTCVideoDecoder::~RTCVideoDecoder() {
-  DCHECK_NE(kNormal, state_);
-}
-
-}  // namespace content