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Unified Diff: content/renderer/media/rtc_video_renderer.cc

Issue 10918052: create a separate WebMediaPlayer for URL derived from media stream (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: code review Created 8 years, 3 months ago
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Index: content/renderer/media/rtc_video_renderer.cc
===================================================================
--- content/renderer/media/rtc_video_renderer.cc (revision 0)
+++ content/renderer/media/rtc_video_renderer.cc (revision 0)
@@ -0,0 +1,107 @@
+// 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_renderer.h"
+
+#include "base/bind.h"
+#include "base/location.h"
+#include "base/logging.h"
+#include "base/message_loop_proxy.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::CopyYPlane;
+using media::CopyUPlane;
+using media::CopyVPlane;
+
+namespace content {
+
+RTCVideoRenderer::RTCVideoRenderer(
+ webrtc::VideoTrackInterface* video_track,
+ const base::Closure& error_cb,
+ const RepaintCB& repaint_cb)
+ : error_cb_(error_cb),
+ repaint_cb_(repaint_cb),
+ message_loop_proxy_(base::MessageLoopProxy::current()),
+ state_(kStopped),
+ video_track_(video_track) {
+}
+
+RTCVideoRenderer::~RTCVideoRenderer() {
+}
+
+void RTCVideoRenderer::Start() {
+ DCHECK(message_loop_proxy_->BelongsToCurrentThread());
+ DCHECK_EQ(state_, kStopped);
+
+ if (video_track_)
+ video_track_->AddRenderer(this);
+ state_ = kStarted;
+}
+
+void RTCVideoRenderer::Stop() {
+ DCHECK(message_loop_proxy_->BelongsToCurrentThread());
+ if (video_track_) {
+ state_ = kStopped;
+ video_track_->RemoveRenderer(this);
+ video_track_ = NULL;
+ }
+}
+
+void RTCVideoRenderer::Play() {
+ DCHECK(message_loop_proxy_->BelongsToCurrentThread());
+ if (video_track_ && state_ == kPaused) {
+ state_ = kStarted;
+ }
+}
+
+void RTCVideoRenderer::Pause() {
+ DCHECK(message_loop_proxy_->BelongsToCurrentThread());
+ if (video_track_ && state_ == kStarted) {
+ state_ = kPaused;
+ }
+}
+
+void RTCVideoRenderer::SetSize(int width, int height) {
+}
+
+void RTCVideoRenderer::RenderFrame(const cricket::VideoFrame* frame) {
+ base::TimeDelta timestamp = base::TimeDelta::FromMilliseconds(
+ frame->GetTimeStamp() / talk_base::kNumNanosecsPerMillisec);
+ gfx::Size size(frame->GetWidth(), frame->GetHeight());
+ scoped_refptr<media::VideoFrame> video_frame =
+ media::VideoFrame::CreateFrame(media::VideoFrame::YV12,
+ size,
+ size,
+ 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);
+
+ message_loop_proxy_->PostTask(
+ FROM_HERE, base::Bind(&RTCVideoRenderer::DoRenderFrameOnMainThread,
+ this, video_frame));
+}
+
+void RTCVideoRenderer::DoRenderFrameOnMainThread(
+ scoped_refptr<media::VideoFrame> video_frame) {
+ DCHECK(message_loop_proxy_->BelongsToCurrentThread());
+
+ if (state_ != kStarted) {
+ return;
+ }
+
+ repaint_cb_.Run(video_frame);
+}
+
+} // namespace content
Property changes on: content/renderer/media/rtc_video_renderer.cc
___________________________________________________________________
Added: svn:eol-style
+ LF
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