compressor.h

/* Copyright (c) 2010, Cedric Stalder <cedric.stalder@gmail.com>
 *               2010-2012, Stefan Eilemann <eile@eyescale.ch>
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 2.1 as published
 * by the Free Software Foundation.
 *  
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef CO_COMPRESSOR_H
#define CO_COMPRESSOR_H

#include <co/api.h>
#include <co/types.h>
#include <lunchbox/thread.h>         // thread-safety macros

namespace co
{
    class Compressor
    {
    public:

        CO_API Compressor();

        CO_API virtual ~Compressor();

        CO_API bool initCompressor( uint32_t name );

        CO_API bool initDecompressor( uint32_t name );

        Plugin* getPlugin() { return _plugin; }
        
        uint32_t getName() const { return _name; }

        virtual CO_API bool isValid( uint32_t name ) const;

        CO_API void reset();

        CO_API float getQuality() const;

        const CompressorInfo& getInfo() const
            { LBASSERT( _info ); return *_info; }

    protected:
        uint32_t _name;    

        Plugin* _plugin;  
        
        void* _instance;

        const CompressorInfo* _info;

        enum State
        {
            STATE_FREE,
            STATE_COMPRESSOR,
            STATE_DECOMPRESSOR
        } _state;

        Plugin* _findPlugin( uint32_t name );

        LB_TS_VAR( _thread );
    };
}
#endif  // CO_COMPRESSOR_H