create WebMediaPlayer based on URL

content/renderer/media/media_stream_impl.cc

Index: content/renderer/media/media_stream_impl.cc
===================================================================
--- content/renderer/media/media_stream_impl.cc	(revision 135772)
+++ content/renderer/media/media_stream_impl.cc	(working copy)
@@ -18,6 +18,7 @@
 #include "content/renderer/media/peer_connection_handler_jsep.h"
 #include "content/renderer/media/video_capture_impl_manager.h"
 #include "content/renderer/media/video_capture_module_impl.h"
+#include "content/renderer/media/video_capture_relay.h"
 #include "content/renderer/media/webrtc_audio_device_impl.h"
 #include "content/renderer/p2p/ipc_network_manager.h"
 #include "content/renderer/p2p/ipc_socket_factory.h"
@@ -286,6 +287,55 @@
   NOTIMPLEMENTED();
 }
 
+bool MediaStreamImpl::IsMediaStream(const WebKit::WebURL url) {
+  DCHECK(CalledOnValidThread());
+  WebKit::WebMediaStreamDescriptor descriptor(
+      WebKit::WebMediaStreamRegistry::lookupMediaStreamDescriptor(url));
+  if (descriptor.isNull())
+    return false;  // This is not a valid stream.
+
+  return GetLocalMediaStream(descriptor); // ||
+      //FindPeerConnectionByStream(descriptor);
+}
+
+scoped_refptr<webkit_media::VideoFrameProvider>
+MediaStreamImpl::GetVideoFrameProvider(
+    const GURL& url, const base::Closure& paint_cb) {
+  DCHECK(CalledOnValidThread());
+VLOG(1) << "MediaStreamImpl::GetVideoFrameProvider 1, url = " << url.spec();
+  WebKit::WebMediaStreamDescriptor descriptor(
+      WebKit::WebMediaStreamRegistry::lookupMediaStreamDescriptor(url));
+  if (descriptor.isNull())
+    return NULL;  // This is not a valid stream.
+VLOG(1) << "MediaStreamImpl::GetVideoFrameProvider 2";
+
+  scoped_refptr<webkit_media::VideoFrameProvider> video_frame_provider;
+  webrtc::LocalMediaStreamInterface* local_stream =
+      GetLocalMediaStream(descriptor);
+  if (local_stream) {
+    if (!local_stream->video_tracks() ||
+        local_stream->video_tracks()->count() == 0)
+      return NULL;
+
+    int video_session_id =
+        media_stream_dispatcher_->video_session_id(local_stream->label(), 0);
+    media::VideoCaptureCapability capability;
+    capability.width = kVideoCaptureWidth;
+    capability.height = kVideoCaptureHeight;
+    capability.frame_rate = kVideoCaptureFramePerSecond;
+    capability.expected_capture_delay = 0;
+    capability.color = media::VideoCaptureCapability::kI420;
+    capability.interlaced = false;
+    video_frame_provider = new VideoCaptureRelay(
+        video_session_id,
+        vc_manager_.get(),
+        capability,
+        paint_cb);
+  }
+VLOG(1) << "MediaStreamImpl::GetVideoFrameProvider 3";
+  return video_frame_provider;
+}
+
 scoped_refptr<media::VideoDecoder> MediaStreamImpl::GetVideoDecoder(
     const GURL& url,
     media::MessageLoopFactory* message_loop_factory) {