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Side by Side Diff: webkit/renderer/media/video_frame_provider.h

Issue 18123002: Migrate webkit/renderer/media/ to content/renderer/media/. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: delegates Created 7 years, 5 months ago
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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.
4
5 #ifndef WEBKIT_RENDERER_MEDIA_VIDEO_FRAME_PROVIDER_H_
6 #define WEBKIT_RENDERER_MEDIA_VIDEO_FRAME_PROVIDER_H_
7
8 #include "base/callback.h"
9 #include "base/memory/ref_counted.h"
10
11 namespace media {
12 class VideoFrame;
13 }
14
15 namespace webkit_media {
16
17 // Define an interface to provide a sequence of video frames to clients.
18 // TODO(wjia): remove ref count.
19 class VideoFrameProvider
20 : public base::RefCountedThreadSafe<VideoFrameProvider> {
21 public:
22 typedef base::Callback<void(const scoped_refptr<media::VideoFrame>&)>
23 RepaintCB;
24
25 // Start to provide video frames to the caller.
26 virtual void Start() = 0;
27
28 // Stop to provide video frames to the caller.
29 virtual void Stop() = 0;
30
31 // Resume to provide video frames to the caller after being paused.
32 virtual void Play() = 0;
33
34 // Put the provider in pause state and the caller will not receive video
35 // frames, but the provider might still generate video frames which are
36 // thrown away.
37 virtual void Pause() = 0;
38
39 protected:
40 friend class base::RefCountedThreadSafe<VideoFrameProvider>;
41 VideoFrameProvider();
42 virtual ~VideoFrameProvider();
43
44 private:
45 DISALLOW_COPY_AND_ASSIGN(VideoFrameProvider);
46 };
47
48 } // namespace webkit_media
49
50 #endif // WEBKIT_RENDERER_MEDIA_VIDEO_FRAME_PROVIDER_H_
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