create a separate WebMediaPlayer for URL derived from media stream

content/renderer/media/local_video_capture.h

+// 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.
+
+#ifndef CONTENT_RENDERER_MEDIA_LOCAL_VIDEO_CAPTURE_H_
+#define CONTENT_RENDERER_MEDIA_LOCAL_VIDEO_CAPTURE_H_
+
+#include "content/common/content_export.h"
+#include "content/common/media/video_capture.h"
+#include "media/video/capture/video_capture.h"
+#include "webkit/media/video_frame_provider.h"
+
+namespace base {
+class MessageLoopProxy;
+}
+
+namespace media {
+class VideoCaptureHandlerProxy;
+}
+
+class VideoCaptureImplManager;
+

[scherkus (not reviewing), 2012/09/07 11:44:03]

all new code in content should be in the content namespace

[wjia(left Chromium), 2012/09/13 01:22:07]

Done.

+// This class takes raw frames from video capture engine via VideoCaptureProxy
+// and passes them to media player as a video frame provider.
+// This class lives on main thread.
+class CONTENT_EXPORT LocalVideoCapture
+    : NON_EXPORTED_BASE(public webkit_media::VideoFrameProvider),
+      public media::VideoCapture::EventHandler {
+ public:
+  LocalVideoCapture(
+      media::VideoCaptureSessionId video_stream_id,
+      VideoCaptureImplManager* vc_manager,
+      const media::VideoCaptureCapability& capability,
+      const base::Closure& error_cb,
+      const webkit_media::RepaintCB& repaint_cb);
+
+  // webkit_media::VideoFrameProvider implementation.
+  virtual void Start() OVERRIDE;
+  virtual void Stop() OVERRIDE;
+  virtual void Play() OVERRIDE;
+  virtual void Pause() OVERRIDE;
+
+  // VideoCapture::EventHandler implementation.
+  virtual void OnStarted(media::VideoCapture* capture) OVERRIDE;
+  virtual void OnStopped(media::VideoCapture* capture) OVERRIDE;
+  virtual void OnPaused(media::VideoCapture* capture) OVERRIDE;
+  virtual void OnError(media::VideoCapture* capture, int error_code) OVERRIDE;
+  virtual void OnRemoved(media::VideoCapture* capture) OVERRIDE;
+  virtual void OnBufferReady(
+      media::VideoCapture* capture,
+      scoped_refptr<media::VideoCapture::VideoFrameBuffer> buf) OVERRIDE;
+  virtual void OnDeviceInfoReceived(
+      media::VideoCapture* capture,
+      const media::VideoCaptureParams& device_info) OVERRIDE;
+
+ protected:
+  virtual ~LocalVideoCapture();
+
+ private:
+  friend class LocalVideoCaptureTest;
+
+  media::VideoCaptureSessionId video_stream_id_;
+  scoped_refptr<VideoCaptureImplManager> vc_manager_;
+  media::VideoCaptureCapability capability_;
+  base::Closure error_cb_;
+  webkit_media::RepaintCB repaint_cb_;
+  media::VideoCapture* capture_engine_;
+  scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
+  scoped_ptr<media::VideoCaptureHandlerProxy> handler_proxy_;
+  video_capture::State state_;
+
+  DISALLOW_COPY_AND_ASSIGN(LocalVideoCapture);
+};
+
+#endif  // CONTENT_RENDERER_MEDIA_LOCAL_VIDEO_CAPTURE_H_