create a separate WebMediaPlayer for URL derived from media stream

webkit/media/webmediaplayer_ms.h

Index: webkit/media/webmediaplayer_ms.h
===================================================================
--- webkit/media/webmediaplayer_ms.h	(revision 0)
+++ webkit/media/webmediaplayer_ms.h	(revision 0)
@@ -0,0 +1,170 @@
+// 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 WEBKIT_MEDIA_WEBMEDIAPLAYER_MS_H_
+#define WEBKIT_MEDIA_WEBMEDIAPLAYER_MS_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "googleurl/src/gurl.h"
+#include "skia/ext/platform_canvas.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebMediaPlayer.h"
+#include "webkit/media/skcanvas_video_renderer.h"
+
+namespace WebKit {
+class WebFrame;
+class WebMediaPlayerClient;
+}
+
+namespace media {
+class MediaLog;
+}
+
+namespace webkit_media {
+
+class MediaStreamClient;
+class VideoFrameProvider;
+class WebMediaPlayerDelegate;
+
+// WebMediaPlayerMS delegates calls from WebCore::MediaPlayerPrivate to
+// Chrome's media player when "src" is from media stream.
+//
+// WebMediaPlayerMS works with multiple objects, the most important ones are:
+//
+// VideoFrameProvider
+//   provides video frames for rendering.
+//
+// TODO(wjia): add AudioPlayer.
+// AudioPlayer
+//   plays audio streams.
+//
+// WebKit::WebMediaPlayerClient
+//   WebKit client of this media player object.
+class WebMediaPlayerMS
+    : public WebKit::WebMediaPlayer,
+      public base::SupportsWeakPtr<WebMediaPlayerMS> {
+ public:
+  // Construct a WebMediaPlayerMS with reference to the client, and
+  // a MediaStreamClient which provides VideoFrameProvider.
+  WebMediaPlayerMS(WebKit::WebFrame* frame,
+                   WebKit::WebMediaPlayerClient* client,
+                   base::WeakPtr<WebMediaPlayerDelegate> delegate,
+                   MediaStreamClient* media_stream_client,
+                   media::MediaLog* media_log);
+  virtual ~WebMediaPlayerMS();
+
+  virtual void load(const WebKit::WebURL& url, CORSMode cors_mode) OVERRIDE;
+  virtual void cancelLoad() OVERRIDE;
+
+  // Playback controls.
+  virtual void play() OVERRIDE;
+  virtual void pause() OVERRIDE;
+  virtual bool supportsFullscreen() const OVERRIDE;
+  virtual bool supportsSave() const OVERRIDE;
+  virtual void seek(float seconds) OVERRIDE;
+  virtual void setEndTime(float seconds) OVERRIDE;
+  virtual void setRate(float rate) OVERRIDE;
+  virtual void setVolume(float volume) OVERRIDE;
+  virtual void setVisible(bool visible) OVERRIDE;
+  virtual void setPreload(WebKit::WebMediaPlayer::Preload preload) OVERRIDE;
+  virtual bool totalBytesKnown() OVERRIDE;
+  virtual const WebKit::WebTimeRanges& buffered() OVERRIDE;
+  virtual float maxTimeSeekable() const OVERRIDE;
+
+  // Methods for painting.
+  virtual void setSize(const WebKit::WebSize& size) OVERRIDE;
+
+  virtual void paint(WebKit::WebCanvas* canvas,
+                     const WebKit::WebRect& rect,
+                     uint8_t alpha) OVERRIDE;
+
+  // True if the loaded media has a playable video/audio track.
+  virtual bool hasVideo() const OVERRIDE;
+  virtual bool hasAudio() const OVERRIDE;
+
+  // Dimensions of the video.
+  virtual WebKit::WebSize naturalSize() const OVERRIDE;
+
+  // Getters of playback state.
+  virtual bool paused() const OVERRIDE;
+  virtual bool seeking() const OVERRIDE;
+  virtual float duration() const OVERRIDE;
+  virtual float currentTime() const OVERRIDE;
+
+  // Get rate of loading the resource.
+  virtual int32 dataRate() const OVERRIDE;
+
+  // Internal states of loading and network.
+  virtual WebKit::WebMediaPlayer::NetworkState networkState() const OVERRIDE;
+  virtual WebKit::WebMediaPlayer::ReadyState readyState() const OVERRIDE;
+
+  virtual bool didLoadingProgress() const OVERRIDE;
+  virtual unsigned long long totalBytes() const OVERRIDE;
+
+  virtual bool hasSingleSecurityOrigin() const OVERRIDE;
+  virtual bool didPassCORSAccessCheck() const OVERRIDE;
+  virtual WebKit::WebMediaPlayer::MovieLoadType movieLoadType() const OVERRIDE;
+
+  virtual float mediaTimeForTimeValue(float timeValue) const OVERRIDE;
+
+  virtual unsigned decodedFrameCount() const OVERRIDE;
+  virtual unsigned droppedFrameCount() const OVERRIDE;
+  virtual unsigned audioDecodedByteCount() const OVERRIDE;
+  virtual unsigned videoDecodedByteCount() const OVERRIDE;
+
+  virtual WebKit::WebVideoFrame* getCurrentFrame() OVERRIDE;
+  virtual void putCurrentFrame(WebKit::WebVideoFrame* web_video_frame) OVERRIDE;
+
+ private:
+  // The callback for VideoFrameProvider to signal a new frame is available.
+  void OnFrameAvailable(const scoped_refptr<media::VideoFrame>& frame);
+  // Need repaint due to state change.
+  void RepaintInternal();
+
+  // The callback for source to report error.
+  void OnSourceError();
+
+  // Helpers that set the network/ready state and notifies the client if
+  // they've changed.
+  void SetNetworkState(WebKit::WebMediaPlayer::NetworkState state);
+  void SetReadyState(WebKit::WebMediaPlayer::ReadyState state);
+
+  // Getter method to |client_|.
+  WebKit::WebMediaPlayerClient* GetClient();
+
+  WebKit::WebFrame* frame_;
+
+  WebKit::WebMediaPlayer::NetworkState network_state_;
+  WebKit::WebMediaPlayer::ReadyState ready_state_;
+
+  WebKit::WebTimeRanges buffered_;
+
+  // Used for DCHECKs to ensure methods calls executed in the correct thread.
+  base::ThreadChecker thread_checker_;
+
+  WebKit::WebMediaPlayerClient* client_;
+
+  base::WeakPtr<WebMediaPlayerDelegate> delegate_;
+
+  MediaStreamClient* media_stream_client_;
+  scoped_refptr<VideoFrameProvider> video_frame_provider_;
+  bool video_frame_provider_started_;
+  bool paused_;
+  scoped_refptr<media::VideoFrame> current_frame_;
+  bool pending_repaint_;
+  bool got_first_frame_;
+  base::TimeDelta start_time_;
+  unsigned total_frame_count_;
+  unsigned dropped_frame_count_;
+  SkCanvasVideoRenderer video_renderer_;
+
+  scoped_refptr<media::MediaLog> media_log_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerMS);
+};
+
+}  // namespace webkit_media
+
+#endif  // WEBKIT_MEDIA_WEBMEDIAPLAYER_MS_H_
Property changes on: webkit/media/webmediaplayer_ms.h
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Added: svn:eol-style
   + LF