1// Copyright 2014 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 MEDIA_OZONE_MEDIA_OZONE_PLATFORM_H_
6#define MEDIA_OZONE_MEDIA_OZONE_PLATFORM_H_
7
8#include "base/callback.h"
9#include "media/base/media_export.h"
10
11namespace media {
12
13class VideoDecodeAccelerator;
14
15// Class for Ozone platform media implementations. Note that the base class for
16// Ozone platform is at ui/ozone.
17//
18// Ozone platforms must override this class and implement the virtual
19// GetFooFactoryOzone() methods to provide implementations of the
20// various ozone interfaces.
21class MEDIA_EXPORT MediaOzonePlatform {
22 public:
23  MediaOzonePlatform();
24  virtual ~MediaOzonePlatform();
25
26  // Besides get the global instance, initializes the subsystems/resources
27  // necessary for media also.
28  static MediaOzonePlatform* GetInstance();
29
30  // Factory getters to override in subclasses. The returned objects will be
31  // injected into the appropriate layer at startup. Subclasses should not
32  // inject these objects themselves. Ownership is retained by
33  // MediaOzonePlatform.
34  virtual VideoDecodeAccelerator* CreateVideoDecodeAccelerator(
35      const base::Callback<bool(void)>& make_context_current);
36
37 private:
38  static void CreateInstance();
39
40  static MediaOzonePlatform* instance_;
41
42  DISALLOW_COPY_AND_ASSIGN(MediaOzonePlatform);
43};
44
45}  // namespace media
46
47#endif  // MEDIA_OZONE_MEDIA_OZONE_PLATFORM_H_
48