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 CONTENT_COMMON_GPU_MEDIA_VT_VIDEO_DECODE_ACCELERATOR_H_ 6 #define CONTENT_COMMON_GPU_MEDIA_VT_VIDEO_DECODE_ACCELERATOR_H_ 7 8 #include <stdint.h> 9 10 #include "base/memory/ref_counted.h" 11 #include "base/memory/weak_ptr.h" 12 #include "base/message_loop/message_loop.h" 13 #include "base/message_loop/message_loop_proxy.h" 14 #include "media/video/video_decode_accelerator.h" 15 #include "ui/gl/gl_context_cgl.h" 16 17 namespace content { 18 19 // (Stub of a) VideoToolbox.framework implementation of the 20 // VideoDecodeAccelerator interface for Mac OS X. 21 class VTVideoDecodeAccelerator 22 : public media::VideoDecodeAccelerator, 23 public base::NonThreadSafe { 24 public: 25 explicit VTVideoDecodeAccelerator(CGLContextObj cgl_context); 26 virtual ~VTVideoDecodeAccelerator(); 27 28 // VideoDecodeAccelerator implementation. 29 virtual bool Initialize( 30 media::VideoCodecProfile profile, 31 Client* client) OVERRIDE; 32 virtual void Decode(const media::BitstreamBuffer& bitstream) OVERRIDE; 33 virtual void AssignPictureBuffers( 34 const std::vector<media::PictureBuffer>& pictures) OVERRIDE; 35 virtual void ReusePictureBuffer(int32_t picture_id) OVERRIDE; 36 virtual void Flush() OVERRIDE; 37 virtual void Reset() OVERRIDE; 38 virtual void Destroy() OVERRIDE; 39 virtual bool CanDecodeOnIOThread() OVERRIDE; 40 41 private: 42 scoped_refptr<base::MessageLoopProxy> loop_proxy_; 43 CGLContextObj cgl_context_; 44 media::VideoDecodeAccelerator::Client* client_; 45 46 // Member variables should appear before the WeakPtrFactory, to ensure 47 // that any WeakPtrs to Controller are invalidated before its members 48 // variable's destructors are executed, rendering them invalid. 49 base::WeakPtrFactory<VTVideoDecodeAccelerator> weak_this_factory_; 50 51 DISALLOW_COPY_AND_ASSIGN(VTVideoDecodeAccelerator); 52 }; 53 54 } // namespace content 55 56 #endif // CONTENT_COMMON_GPU_MEDIA_VT_VIDEO_DECODE_ACCELERATOR_H_ 57