1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef CONTENT_RENDERER_MEDIA_WEBMEDIAPLAYER_MS_H_
6 #define CONTENT_RENDERER_MEDIA_WEBMEDIAPLAYER_MS_H_
8 #include "base/memory/ref_counted.h"
9 #include "base/memory/scoped_ptr.h"
10 #include "base/memory/weak_ptr.h"
11 #include "base/synchronization/lock.h"
12 #include "base/threading/thread_checker.h"
13 #include "cc/layers/video_frame_provider.h"
14 #include "media/filters/skcanvas_video_renderer.h"
15 #include "skia/ext/platform_canvas.h"
16 #include "third_party/WebKit/public/web/WebMediaPlayer.h"
21 class WebMediaPlayerClient;
33 class MediaStreamAudioRenderer;
34 class MediaStreamClient;
35 class VideoFrameProvider;
36 class WebMediaPlayerDelegate;
38 // WebMediaPlayerMS delegates calls from WebCore::MediaPlayerPrivate to
39 // Chrome's media player when "src" is from media stream.
41 // WebMediaPlayerMS works with multiple objects, the most important ones are:
44 // provides video frames for rendering.
46 // TODO(wjia): add AudioPlayer.
48 // plays audio streams.
50 // WebKit::WebMediaPlayerClient
51 // WebKit client of this media player object.
52 class WebMediaPlayerMS
53 : public WebKit::WebMediaPlayer,
54 public cc::VideoFrameProvider,
55 public base::SupportsWeakPtr<WebMediaPlayerMS> {
57 // Construct a WebMediaPlayerMS with reference to the client, and
58 // a MediaStreamClient which provides VideoFrameProvider.
59 WebMediaPlayerMS(WebKit::WebFrame* frame,
60 WebKit::WebMediaPlayerClient* client,
61 base::WeakPtr<WebMediaPlayerDelegate> delegate,
62 MediaStreamClient* media_stream_client,
63 media::MediaLog* media_log);
64 virtual ~WebMediaPlayerMS();
66 virtual void load(LoadType load_type,
67 const WebKit::WebURL& url,
68 CORSMode cors_mode) OVERRIDE;
71 virtual void play() OVERRIDE;
72 virtual void pause() OVERRIDE;
73 virtual bool supportsFullscreen() const OVERRIDE;
74 virtual bool supportsSave() const OVERRIDE;
75 virtual void seek(double seconds);
76 virtual void setRate(double rate);
77 virtual void setVolume(double volume);
78 virtual void setPreload(WebKit::WebMediaPlayer::Preload preload) OVERRIDE;
79 virtual const WebKit::WebTimeRanges& buffered() OVERRIDE;
80 virtual double maxTimeSeekable() const;
82 // Methods for painting.
83 virtual void paint(WebKit::WebCanvas* canvas,
84 const WebKit::WebRect& rect,
85 unsigned char alpha) OVERRIDE;
87 // True if the loaded media has a playable video/audio track.
88 virtual bool hasVideo() const OVERRIDE;
89 virtual bool hasAudio() const OVERRIDE;
91 // Dimensions of the video.
92 virtual WebKit::WebSize naturalSize() const OVERRIDE;
94 // Getters of playback state.
95 virtual bool paused() const OVERRIDE;
96 virtual bool seeking() const OVERRIDE;
97 virtual double duration() const;
98 virtual double currentTime() const;
100 // Internal states of loading and network.
101 virtual WebKit::WebMediaPlayer::NetworkState networkState() const OVERRIDE;
102 virtual WebKit::WebMediaPlayer::ReadyState readyState() const OVERRIDE;
104 virtual bool didLoadingProgress() const OVERRIDE;
106 virtual bool hasSingleSecurityOrigin() const OVERRIDE;
107 virtual bool didPassCORSAccessCheck() const OVERRIDE;
109 virtual double mediaTimeForTimeValue(double timeValue) const;
111 virtual unsigned decodedFrameCount() const OVERRIDE;
112 virtual unsigned droppedFrameCount() const OVERRIDE;
113 virtual unsigned audioDecodedByteCount() const OVERRIDE;
114 virtual unsigned videoDecodedByteCount() const OVERRIDE;
116 // VideoFrameProvider implementation.
117 virtual void SetVideoFrameProviderClient(
118 cc::VideoFrameProvider::Client* client) OVERRIDE;
119 virtual scoped_refptr<media::VideoFrame> GetCurrentFrame() OVERRIDE;
120 virtual void PutCurrentFrame(const scoped_refptr<media::VideoFrame>& frame)
124 // The callback for VideoFrameProvider to signal a new frame is available.
125 void OnFrameAvailable(const scoped_refptr<media::VideoFrame>& frame);
126 // Need repaint due to state change.
127 void RepaintInternal();
129 // The callback for source to report error.
130 void OnSourceError();
132 // Helpers that set the network/ready state and notifies the client if
134 void SetNetworkState(WebKit::WebMediaPlayer::NetworkState state);
135 void SetReadyState(WebKit::WebMediaPlayer::ReadyState state);
137 // Getter method to |client_|.
138 WebKit::WebMediaPlayerClient* GetClient();
140 WebKit::WebFrame* frame_;
142 WebKit::WebMediaPlayer::NetworkState network_state_;
143 WebKit::WebMediaPlayer::ReadyState ready_state_;
145 WebKit::WebTimeRanges buffered_;
147 // Used for DCHECKs to ensure methods calls executed in the correct thread.
148 base::ThreadChecker thread_checker_;
150 WebKit::WebMediaPlayerClient* client_;
152 base::WeakPtr<WebMediaPlayerDelegate> delegate_;
154 MediaStreamClient* media_stream_client_;
156 // Specify content:: to disambiguate from cc::.
157 scoped_refptr<content::VideoFrameProvider> video_frame_provider_;
160 // |current_frame_| is updated only on main thread. The object it holds
161 // can be freed on the compositor thread if it is the last to hold a
162 // reference but media::VideoFrame is a thread-safe ref-pointer.
163 scoped_refptr<media::VideoFrame> current_frame_;
164 // |current_frame_used_| is updated on both main and compositing thread.
165 // It's used to track whether |current_frame_| was painted for detecting
166 // when to increase |dropped_frame_count_|.
167 bool current_frame_used_;
168 base::Lock current_frame_lock_;
169 bool pending_repaint_;
171 scoped_ptr<webkit::WebLayerImpl> video_weblayer_;
173 // A pointer back to the compositor to inform it about state changes. This is
174 // not NULL while the compositor is actively using this webmediaplayer.
175 cc::VideoFrameProvider::Client* video_frame_provider_client_;
177 bool received_first_frame_;
178 bool sequence_started_;
179 base::TimeDelta start_time_;
180 unsigned total_frame_count_;
181 unsigned dropped_frame_count_;
182 media::SkCanvasVideoRenderer video_renderer_;
184 scoped_refptr<MediaStreamAudioRenderer> audio_renderer_;
186 scoped_refptr<media::MediaLog> media_log_;
188 DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerMS);
191 } // namespace content
193 #endif // CONTENT_RENDERER_MEDIA_WEBMEDIAPLAYER_MS_H_