frameData.h

/* Copyright (c) 2006-2016, Stefan Eilemann <eile@equalizergraphics.com>
 *                          Daniel Nachbaur <danielnachbaur@gmail.com>
 *                          Enrique <egparedes@ifi.uzh.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 EQ_FRAMEDATA_H
#define EQ_FRAMEDATA_H

#include <eq/frame.h>         // enum Frame::Buffer
#include <eq/types.h>
#include <eq/fabric/frameData.h> // base class
#include <co/object.h>               // base class
#include <lunchbox/monitor.h>        // member
#include <lunchbox/spinLock.h>       // member

namespace eq
{
namespace detail { class FrameData; }

class FrameData : public fabric::FrameData, public co::Object,
                  public lunchbox::Referenced
{
public:
    void assembleFrame( Frame* frame, Channel* channel );
    struct ImageHeader
    {
        uint32_t                internalFormat;
        uint32_t                externalFormat;
        uint32_t                pixelSize;
        fabric::PixelViewport   pvp;
        uint32_t                compressorName;
        uint32_t                compressorFlags;
        uint32_t                nChunks;
        float                   quality;
    };

    EQ_API FrameData();

    EQ_API virtual ~FrameData();

    EQ_API const Images& getImages() const;

    EQ_API void setAlphaUsage( const bool useAlpha );

    void setQuality( const Frame::Buffer buffer, const float quality );

    void useCompressor( const Frame::Buffer buffer, const uint32_t name );

    EQ_API Image* newImage( const Frame::Type type,
                            const DrawableConfig& config );

    EQ_API void clear();

    EQ_API void flush();

    void deleteGLObjects( util::ObjectManager& om );

    EQ_API void resetPlugins();

    Images startReadback( const Frame& frame,
                          util::ObjectManager& glObjects,
                          const DrawableConfig& config,
                          const PixelViewports& regions,
                          const RenderContext& context );

    void setReady();

    EQ_API bool isReady() const;

    EQ_API void waitReady( const uint32_t timeout = LB_TIMEOUT_INDEFINITE )
        const;

    void setVersion( const uint64_t version );

    typedef lunchbox::Monitor< uint32_t > Listener; 

    void addListener( Listener& listener );

    void removeListener( Listener& listener );

    bool addImage( const co::ObjectVersion& frameDataVersion,
                   const PixelViewport& pvp, const Zoom& zoom,
                   const RenderContext& context, const uint32_t buffers,
                   const bool useAlpha, uint8_t* data );
    void setReady( const co::ObjectVersion& frameData,
                   const fabric::FrameData& data ); 

protected:
    virtual ChangeType getChangeType() const { return INSTANCE; }
    virtual void getInstanceData( co::DataOStream& os );
    virtual void applyInstanceData( co::DataIStream& is );

private:
    detail::FrameData* const _impl;

    Image* _allocImage( const Frame::Type type,
                        const DrawableConfig& config,
                        const bool setQuality );

    void _applyVersion( const uint128_t& version );

    void _setReady( const uint64_t version );

    LB_TS_VAR( _commandThread );
};

EQ_API std::ostream& operator << ( std::ostream&, const FrameData& );
}

#endif // EQ_FRAMEDATA_H