blob: f6a15cbaccfdeef58dda8529a948548204a576db (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
// 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_VIDEO_FRAME_PROVIDER_H_
#define WEBKIT_MEDIA_VIDEO_FRAME_PROVIDER_H_
#include "base/callback.h"
#include "base/memory/ref_counted.h"
namespace media {
class VideoFrame;
}
namespace webkit_media {
// Define an interface to provide a sequence of video frames to clients.
// TODO(wjia): remove ref count.
class VideoFrameProvider
: public base::RefCountedThreadSafe<VideoFrameProvider> {
public:
typedef base::Callback<void(const scoped_refptr<media::VideoFrame>&)>
RepaintCB;
// Start to provide video frames to the caller.
virtual void Start() = 0;
// Stop to provide video frames to the caller.
virtual void Stop() = 0;
// Resume to provide video frames to the caller after being paused.
virtual void Play() = 0;
// Put the provider in pause state and the caller will not receive video
// frames, but the provider might still generate video frames which are
// thrown away.
virtual void Pause() = 0;
protected:
friend class base::RefCountedThreadSafe<VideoFrameProvider>;
VideoFrameProvider();
virtual ~VideoFrameProvider();
private:
DISALLOW_COPY_AND_ASSIGN(VideoFrameProvider);
};
} // namespace webkit_media
#endif // WEBKIT_MEDIA_VIDEO_FRAME_PROVIDER_H_
|
