include/eq/fabric/pipe.h

/* Copyright (c) 2010-2011, Stefan Eilemann <eile@equalizergraphics.com>
 *                    2010, Cedric Stalder <cedric.stalder@gmail.com> 
 *
 * 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 EQFABRIC_PIPE_H
#define EQFABRIC_PIPE_H

#include <eq/fabric/object.h>        // base class
#include <eq/fabric/pixelViewport.h> // property
#include <eq/fabric/types.h>
#include <eq/fabric/visitorResult.h> // enum

#include <co/types.h>            // LocalNodePtr

namespace eq
{
namespace fabric
{
    template< class N, class P, class W, class V > class Pipe : public Object
    {
    public:
        typedef std::vector< W* >  Windows; 
        
        N*       getNode()       { return _node; }
        const N* getNode() const { return _node; }

        const Windows& getWindows() const { return _windows; }

        uint32_t getPort() const { return _port; }
        
        EQFABRIC_INL void setPort( const uint32_t port ); 

        uint32_t getDevice() const { return _device; }

        EQFABRIC_INL void setDevice( const uint32_t device ); 

        const PixelViewport& getPixelViewport() const { return _data.pvp; }

        EQFABRIC_INL void setPixelViewport( const PixelViewport& pvp );

        void notifyPixelViewportChanged();

        EQFABRIC_INL PipePath getPath() const;

        EQFABRIC_INL VisitorResult accept( V& visitor );

        EQFABRIC_INL VisitorResult accept( V& visitor ) const;

        enum IAttribute
        {
            // Note: also update string array initialization in pipe.cpp
            IATTR_HINT_THREAD,   
            IATTR_HINT_AFFINITY, 
            IATTR_HINT_CUDA_GL_INTEROP, 
            IATTR_LAST,
            IATTR_ALL = IATTR_LAST + 5
        };

        EQFABRIC_INL void setIAttribute( const IAttribute attr,
                                         const int32_t value );

        int32_t getIAttribute( const IAttribute attr ) const
            { return _iAttributes[attr]; }

        bool isThreaded() const
            { return (getIAttribute( IATTR_HINT_THREAD ) == 1 ); }
        
        EQFABRIC_INL static const std::string& getIAttributeString(
                                                      const IAttribute attr );

        EQFABRIC_INL virtual void backup(); 
        EQFABRIC_INL virtual void restore(); 
        void create( W** window ); 
        void release( W* window ); 
        virtual void output( std::ostream& ) const {} 

        EQFABRIC_INL virtual uint128_t commit( const uint32_t incarnation =
                                               CO_COMMIT_NEXT );

    protected:
        //-------------------- Members --------------------

        Pipe( N* parent );
        EQFABRIC_INL virtual ~Pipe( ); 

        virtual void attach( const co::base::UUID& id,
                             const uint32_t instanceID ); 

        EQFABRIC_INL virtual void serialize( co::DataOStream& os,
                                             const uint64_t dirtyBits );
        EQFABRIC_INL virtual void deserialize( co::DataIStream& is, 
                                               const uint64_t dirtyBits );

        EQFABRIC_INL virtual void notifyDetach(); 

        EQFABRIC_INL virtual void setDirty( const uint64_t bits );

        virtual ChangeType getChangeType() const { return UNBUFFERED; }

        W* _findWindow( const co::base::UUID& id ); 

        enum DirtyBits
        {
            DIRTY_ATTRIBUTES      = Object::DIRTY_CUSTOM << 0,
            DIRTY_WINDOWS         = Object::DIRTY_CUSTOM << 1,
            DIRTY_PIXELVIEWPORT   = Object::DIRTY_CUSTOM << 2,
            DIRTY_MEMBER          = Object::DIRTY_CUSTOM << 3,
            DIRTY_PIPE_BITS =
                DIRTY_ATTRIBUTES | DIRTY_WINDOWS | DIRTY_PIXELVIEWPORT |
                DIRTY_MEMBER | DIRTY_OBJECT_BITS
        };

        virtual uint64_t getRedistributableBits() const
            { return DIRTY_PIPE_BITS; }

    private:
        N* const _node;
        
        Windows _windows;

        int32_t _iAttributes[IATTR_ALL];

        uint32_t _port;

        uint32_t _device;

        struct BackupData
        {
            PixelViewport pvp;
        }
            _data, _backup;

        struct Private;
        Private* _private; // placeholder for binary-compatible changes

        void _addWindow( W* window );
        EQFABRIC_INL bool _removeWindow( W* window );
        template< class, class, class > friend class Window;

        bool _mapNodeObjects() { return _node->_mapNodeObjects(); }

        typedef co::CommandFunc< Pipe< N, P, W, V > > CmdFunc;
        bool _cmdNewWindow( co::Command& command );
        bool _cmdNewWindowReply( co::Command& command );
    };

    template< class N, class P, class W, class V > EQFABRIC_INL
    std::ostream& operator << ( std::ostream&, const Pipe< N, P, W, V >& );
}
}

#endif // EQFABRIC_PIPE_H