Gnash  0.8.10
VaapiContext.h
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00001 // VaapiContext.h: VA context abstraction
00002 // 
00003 // Copyright (C) 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
00004 // 
00005 // This program is free software; you can redistribute it and/or modify
00006 // it under the terms of the GNU General Public License as published by
00007 // the Free Software Foundation; either version 3 of the License, or
00008 // (at your option) any later version.
00009 // 
00010 // This program is distributed in the hope that it will be useful,
00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013 // GNU General Public License for more details.
00014 // 
00015 // You should have received a copy of the GNU General Public License
00016 // along with this program; if not, write to the Free Software
00017 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00018 //
00019 
00020 #ifndef GNASH_VAAPICONTEXT_H
00021 #define GNASH_VAAPICONTEXT_H
00022 
00023 
00024 #include <queue>
00025 
00026 #include "log.h"
00027 #include "vaapi_common.h"
00028 
00029 namespace gnash {
00030 
00031 // Forward declarations
00032 class VaapiSurface;
00033 
00035 enum VaapiCodec {
00036     VAAPI_CODEC_UNKNOWN,
00037     VAAPI_CODEC_MPEG2,
00038     VAAPI_CODEC_MPEG4,
00039     VAAPI_CODEC_H264,
00040     VAAPI_CODEC_VC1
00041 };
00042 
00044 class VaapiContextData {
00045 public:
00046     virtual ~VaapiContextData()
00047     { /* do nothing */ }
00048 };
00049 
00051 class DSOEXPORT VaapiContext {
00052     typedef boost::shared_ptr<VaapiSurface> VaapiSurfaceSP;
00053     
00054     VADisplay                           _display;
00055     VAConfigID                          _config;
00056     VAContextID                         _context;
00057     VaapiCodec                          _codec;
00058     VAProfile                           _profile;
00059     VAEntrypoint                        _entrypoint;
00060     std::queue<VaapiSurfaceSP>          _surfaces;
00061     unsigned int                        _picture_width;
00062     unsigned int                        _picture_height;
00063     std::auto_ptr<VaapiContextData>     _user_data;
00064 
00065     bool construct();
00066     void destruct();
00067     bool createContext(unsigned int width, unsigned int height);
00068     void destroyContext();
00069 
00070 public:
00071     VaapiContext(VAProfile profile, VAEntrypoint entrypoint);
00072     ~VaapiContext();
00073 
00075     bool initDecoder(unsigned int width, unsigned int height);
00076 
00078     VAContextID get() const { return _context; }
00079 
00081     boost::shared_ptr<VaapiSurface> acquireSurface();
00082 
00084     void releaseSurface(boost::shared_ptr<VaapiSurface> surface);
00085 
00087     void setData(std::auto_ptr<VaapiContextData> user_data) { _user_data = user_data; }
00088 
00090     VaapiContextData *getData() const { return _user_data.get(); }
00091 };
00092 
00093 } // gnash namespace
00094 
00095 #endif // GNASH_VAAPICONTEXT_H
00096 
00097 // local Variables:
00098 // mode: C++
00099 // indent-tabs-mode: nil
00100 // End:
00101 
00102