Integrate VDA with WebRTC.

content/renderer/media/rtc_video_renderer.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_renderer.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.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/media/base/videoframe.h"
+#include "third_party/webrtc/common_video/interface/native_handle.h"
 
 using media::CopyYPlane;
 using media::CopyUPlane;
 using media::CopyVPlane;
 
 namespace content {
 
 RTCVideoRenderer::RTCVideoRenderer(
     webrtc::VideoTrackInterface* video_track,
     const base::Closure& error_cb,
@@ skipping 49 matching lines @@
 
 void RTCVideoRenderer::RenderFrame(const cricket::VideoFrame* frame) {
   TRACE_EVENT_INSTANT2("rtc_video_renderer",
                        "RenderFrame",
                        TRACE_EVENT_SCOPE_THREAD,
                        "elapsed time",
                        frame->GetElapsedTime(),
                        "timestamp",
                        frame->GetTimeStamp());
 
-  gfx::Size size(frame->GetWidth(), frame->GetHeight());
-  scoped_refptr<media::VideoFrame> video_frame =
-      media::VideoFrame::CreateFrame(media::VideoFrame::YV12,
-                                     size,
-                                     gfx::Rect(size),
-                                     size,
-                                     base::TimeDelta::FromMilliseconds(
-                                         frame->GetTimeStamp()));
+  scoped_refptr<media::VideoFrame> video_frame;
+  if (frame->GetNativeHandle() != NULL) {
+    webrtc::NativeHandle *handle =
+        (webrtc::NativeHandle *)frame->GetNativeHandle();

[Ami GONE FROM CHROMIUM, 2013/04/26 00:42:05]

if you cast this to the Impl version then you can avoid the cast to VideoFrame
in the next call

[wuchengli, 2013/05/08 15:58:56]

I don't understand. The Impl version signature also returns void*. The cast is
still needed.
On 2013/04/26 00:42:05, Ami Fischman wrote:

+    video_frame = (media::VideoFrame *)handle->GetHandle();
+    base::TimeDelta timestamp = base::TimeDelta::FromMilliseconds(

[Ami GONE FROM CHROMIUM, 2013/04/26 00:42:05]

this is common to both if/else clauses so could be pulled out.

[wuchengli, 2013/05/08 15:58:56]

Done. Someone else extracted this.
On 2013/04/26 00:42:05, Ami Fischman wrote:

+        frame->GetTimeStamp());
+    video_frame->SetTimestamp(timestamp);
+  } else {
+    gfx::Size size(frame->GetWidth(), frame->GetHeight());
+    video_frame = media::VideoFrame::CreateFrame(
+        media::VideoFrame::YV12, size, gfx::Rect(size), size,
+        base::TimeDelta::FromMilliseconds(frame->GetTimeStamp()));
 
-  // Aspect ratio unsupported; DCHECK when there are non-square pixels.
-  DCHECK_EQ(frame->GetPixelWidth(), 1u);
-  DCHECK_EQ(frame->GetPixelHeight(), 1u);
+    // 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);
+    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::OnChanged() {
   DCHECK(message_loop_proxy_->BelongsToCurrentThread());
   MaybeRenderSignalingFrame();
 }
@@ skipping 17 matching lines @@
 
   if (state_ != kStarted) {
     return;
   }
 
   TRACE_EVENT0("video", "DoRenderFrameOnMainThread");
   repaint_cb_.Run(video_frame);
 }
 
 }  // namespace content