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