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 11 namespace media { 12 13 class 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. 21 class 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