OfxhInteract.cpp

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/*
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 *
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// ofx host
#include "OfxhBinary.hpp"
#include "OfxhMemory.hpp"
#include "OfxhImageEffectNode.hpp"
#include "OfxhInteract.hpp"
#include "property/OfxhSet.hpp"
#include "attribute/OfxhClip.hpp"
#include "attribute/OfxhParam.hpp"

// ofx
#include <ofxKeySyms.h>
#include <ofxCore.h>
#include <ofxImageEffect.h>

#include <tuttle/host/exceptions.hpp>

namespace tuttle {
namespace host {
namespace ofx {
namespace interact {


OfxhInteractBase::~OfxhInteractBase()
{}

//
// descriptor
//
static property::OfxhPropSpec interactDescriptorStuffs[] = {
        { kOfxInteractPropHasAlpha, property::ePropTypeInt, 1, true, "0" },
        { kOfxInteractPropBitDepth, property::ePropTypeInt, 1, true, "0" },
        { 0 },
};

OfxhInteractDescriptor::OfxhInteractDescriptor()
        : _properties( interactDescriptorStuffs )
        , _state( eUninitialised )
        , _entryPoint( NULL )
{}

OfxhInteractDescriptor::~OfxhInteractDescriptor()
{}

/// call describe on this descriptor
bool OfxhInteractDescriptor::describe( int bitDepthPerComponent, bool hasAlpha )
{
        if( _state == eUninitialised )
        {
                _properties.setIntProperty( kOfxInteractPropBitDepth, bitDepthPerComponent );
                _properties.setIntProperty( kOfxInteractPropHasAlpha, (int)( hasAlpha ) );

                OfxStatus stat = callEntry( kOfxActionDescribe, getHandle(), NULL, NULL );
                if( stat == kOfxStatOK || stat == kOfxStatReplyDefault )
                {
                        _state = eDescribed;
                }
                else
                {
                        _state = eFailed;
                }
        }
        return _state == eDescribed;
}

// call the interactive entry point
OfxStatus OfxhInteractDescriptor::callEntry( const char*          action,
                                             void*                handle,
                                             OfxPropertySetHandle inArgs,
                                             OfxPropertySetHandle outArgs ) const
{
        if( ! _entryPoint )
        {
                BOOST_THROW_EXCEPTION( OfxhException( kOfxStatErrValue )
                        << exception::dev() + "Plugin entry point is not initialized." );
        }
        if( _state == eFailed )
        {
                BOOST_THROW_EXCEPTION( OfxhException( kOfxStatErrValue )
                        << exception::dev() + "Previous call to plugin lead to a failure state." );
        }
        return _entryPoint( action, handle, inArgs, outArgs );
}

////////////////////////////////////////////////////////////////////////////////
static property::OfxhPropSpec interactInstanceStuffs[] = {
        { kOfxPropEffectInstance, property::ePropTypePointer, 1, true, NULL },
        { kOfxPropInstanceData, property::ePropTypePointer, 1, false, NULL },
        { kOfxInteractPropPixelScale, property::ePropTypeDouble, 2, true, "1.0" },
        { kOfxInteractPropBackgroundColour, property::ePropTypeDouble, 3, true, "0.0" },
        { kOfxInteractPropViewportSize, property::ePropTypeInt, 2, true, "0" },
        { kOfxInteractPropSlaveToParam, property::ePropTypeString, 0, false, "" },
        { 0 },
};

static property::OfxhPropSpec interactArgsStuffs[] = {
        { kOfxPropEffectInstance, property::ePropTypePointer, 1, false, NULL },
        { kOfxPropInstanceData, property::ePropTypePointer, 1, false, NULL },
        { kOfxPropTime, property::ePropTypeDouble, 1, false, "0.0" },
        { kOfxImageEffectPropRenderScale, property::ePropTypeDouble, 2, false, "0.0" },
        { kOfxInteractPropBackgroundColour, property::ePropTypeDouble, 3, false, "0.0" },
        { kOfxInteractPropViewportSize, property::ePropTypeInt, 2, false, "0" },
        { kOfxInteractPropPixelScale, property::ePropTypeDouble, 2, false, "1.0" },
        { kOfxInteractPropPenPosition, property::ePropTypeDouble, 2, false, "0.0" },
        #ifdef kOfxInteractPropPenViewportPosition
        { kOfxInteractPropPenViewportPosition, property::ePropTypeInt, 2, false, "0" },
        #endif
        { kOfxInteractPropPenPressure, property::ePropTypeDouble, 1, false, "0.0" },
        { kOfxPropKeyString, property::ePropTypeString, 1, false, "" },
        { kOfxPropKeySym, property::ePropTypeInt, 1, false, "0" },
        { 0 },
};

// instance

OfxhInteract::OfxhInteract( const OfxhInteractDescriptor& desc, void* effectInstance )
        : _descriptor( desc )
        , _properties( interactInstanceStuffs )
        , _state( desc.getState() )
        , _effectInstance( effectInstance )
        , _argProperties( interactArgsStuffs )
{
        _properties.setPointerProperty( kOfxPropEffectInstance, effectInstance );
        _properties.setChainedSet( &desc.getProperties() ); /// chain it into the descriptor props
}

OfxhInteract::~OfxhInteract()
{
        /// call it directly incase CI failed and we should always tidy up after create instance
        callEntry( kOfxActionDestroyInstance,  NULL );
}

/// call the entry point in the descriptor with action and the given args
OfxStatus OfxhInteract::callEntry( const char* action, property::OfxhSet* inArgs )
{
        if( _state == eFailed )
                BOOST_THROW_EXCEPTION( OfxhException( kOfxStatErrValue ) );
        
        OfxPropertySetHandle inHandle = inArgs ? inArgs->getHandle() : NULL ;
        return _descriptor.callEntry( action, getHandle(), inHandle, NULL );
}

// do nothing function
void OfxhInteract::reset( const std::string& name ) OFX_EXCEPTION_SPEC
{
        // no-op
}

void OfxhInteract::getSlaveToParam( std::vector<std::string>& params ) const
{
        int nSlaveParams = _properties.getDimension( kOfxInteractPropSlaveToParam );

        for( int i = 0; i < nSlaveParams; i++ )
        {
                std::string param = _properties.getStringProperty( kOfxInteractPropSlaveToParam, i );
                params.push_back( param );
        }
}

/// initialise the argument properties
void OfxhInteract::initArgProp( OfxTime          time,
                                const OfxPointD& renderScale )
{
        _argProperties.setPointerProperty( kOfxPropEffectInstance, _effectInstance );
        _argProperties.setPointerProperty( kOfxPropInstanceData, _properties.getPointerProperty( kOfxPropInstanceData ) );
        _argProperties.setDoubleProperty( kOfxPropTime, time );
        
        double pixelScale[2] = {1., 1.};
        getPixelScale( pixelScale[0], pixelScale[1] );
        _argProperties.setDoublePropertyN( kOfxInteractPropPixelScale, pixelScale, 2 ); // the scale factor to convert cannonical pixels to screen pixels
        _argProperties.setDoublePropertyN( kOfxImageEffectPropRenderScale, &renderScale.x, 2 );
        
        int viewportSize[2] = {0, 0};
        getViewportSize( viewportSize[0], viewportSize[1] );
        _argProperties.setIntPropertyN( kOfxInteractPropViewportSize, viewportSize, 2 ); // the openGL viewport size for the instance
        
        double backgroundColor[3] = {0, 0, 0};
        getBackgroundColour( backgroundColor[0], backgroundColor[1], backgroundColor[2] );
        _argProperties.setDoublePropertyN( kOfxInteractPropBackgroundColour, backgroundColor, 3 ); // the background colour of the application behind the current view
}

void OfxhInteract::setPenArgProps( const OfxPointD& penPos,
                                   const OfxPointI& penPosViewport,
                                   double           pressure )
{
        _argProperties.setDoublePropertyN( kOfxInteractPropPenPosition, &penPos.x, 2 );
        #ifdef kOfxInteractPropPenViewportPosition
        _argProperties.setIntPropertyN( kOfxInteractPropPenViewportPosition, &penPosViewport.x, 2 );
        #endif
        _argProperties.setDoubleProperty( kOfxInteractPropPenPressure, pressure );
}

void OfxhInteract::setKeyArgProps( int   key,
                                   char* keyString )
{
        _argProperties.setIntProperty( kOfxPropKeySym, key );
        _argProperties.setStringProperty( kOfxPropKeyString, keyString );
}

void OfxhInteract::createInstanceAction() OFX_EXCEPTION_SPEC
{
        OfxStatus status = callEntry( kOfxActionCreateInstance, NULL );

        if( status == kOfxStatOK || status == kOfxStatReplyDefault )
        {
                _state = eCreated;
        }
        else
        {
                _state = eFailed;
                BOOST_THROW_EXCEPTION( OfxhException( status ) );
        }
}

void OfxhInteract::drawAction( OfxTime          time,
                               const OfxPointD& renderScale ) OFX_EXCEPTION_SPEC
{
        initArgProp( time, renderScale );
        OfxStatus status = callEntry( kOfxInteractActionDraw, &_argProperties );
        if( status != kOfxStatOK && status != kOfxStatReplyDefault )
                BOOST_THROW_EXCEPTION( OfxhException( status ) );
}

void OfxhInteract::penMotionAction( OfxTime          time,
                                    const OfxPointD& renderScale,
                                    const OfxPointD& penPos,
                                    const OfxPointI& penPosViewport,
                                    double           pressure ) OFX_EXCEPTION_SPEC
{
        initArgProp( time, renderScale );
        setPenArgProps( penPos, penPosViewport, pressure );
        OfxStatus status = callEntry( kOfxInteractActionPenMotion, &_argProperties );
        if( status != kOfxStatOK && status != kOfxStatReplyDefault )
                BOOST_THROW_EXCEPTION( OfxhException( status ) );
}

void OfxhInteract::penUpAction( OfxTime          time,
                                const OfxPointD& renderScale,
                                const OfxPointD& penPos,
                                const OfxPointI& penPosViewport,
                                double           pressure ) OFX_EXCEPTION_SPEC
{
        initArgProp( time, renderScale );
        setPenArgProps( penPos, penPosViewport, pressure );
        OfxStatus status = callEntry( kOfxInteractActionPenUp, &_argProperties );
        if( status != kOfxStatOK && status != kOfxStatReplyDefault )
                BOOST_THROW_EXCEPTION( OfxhException( status ) );
}

void OfxhInteract::penDownAction( OfxTime          time,
                                  const OfxPointD& renderScale,
                                  const OfxPointD& penPos,
                                  const OfxPointI& penPosViewport,
                                  double           pressure ) OFX_EXCEPTION_SPEC
{
        initArgProp( time, renderScale );
        setPenArgProps( penPos, penPosViewport, pressure );
        OfxStatus status = callEntry( kOfxInteractActionPenDown, &_argProperties );
        if( status != kOfxStatOK && status != kOfxStatReplyDefault )
                BOOST_THROW_EXCEPTION( OfxhException( status ) );
}

void OfxhInteract::keyDownAction( OfxTime          time,
                                  const OfxPointD& renderScale,
                                  int              key,
                                  char*            keyString ) OFX_EXCEPTION_SPEC
{
        initArgProp( time, renderScale );
        setKeyArgProps( key, keyString );
        OfxStatus status = callEntry( kOfxInteractActionKeyDown, &_argProperties );
        if( status != kOfxStatOK && status != kOfxStatReplyDefault )
                BOOST_THROW_EXCEPTION( OfxhException( status ) );
}

void OfxhInteract::keyUpAction( OfxTime          time,
                                const OfxPointD& renderScale,
                                int              key,
                                char*            keyString ) OFX_EXCEPTION_SPEC
{
        initArgProp( time, renderScale );
        setKeyArgProps( key, keyString );
        OfxStatus status = callEntry( kOfxInteractActionKeyUp, &_argProperties );
        if( status != kOfxStatOK && status != kOfxStatReplyDefault )
                BOOST_THROW_EXCEPTION( OfxhException( status ) );
}

void OfxhInteract::keyRepeatAction( OfxTime          time,
                                    const OfxPointD& renderScale,
                                    int              key,
                                    char*            keyString ) OFX_EXCEPTION_SPEC
{
        initArgProp( time, renderScale );
        setKeyArgProps( key, keyString );
        OfxStatus status = callEntry( kOfxInteractActionKeyRepeat, &_argProperties );
        if( status != kOfxStatOK && status != kOfxStatReplyDefault )
                BOOST_THROW_EXCEPTION( OfxhException( status ) );
}

void OfxhInteract::gainFocusAction( OfxTime          time,
                                    const OfxPointD& renderScale ) OFX_EXCEPTION_SPEC
{
        initArgProp( time, renderScale );
        OfxStatus status = callEntry( kOfxInteractActionGainFocus, &_argProperties );
        if( status != kOfxStatOK && status != kOfxStatReplyDefault )
                BOOST_THROW_EXCEPTION( OfxhException( status ) );
}

void OfxhInteract::loseFocusAction( OfxTime          time,
                                    const OfxPointD& renderScale ) OFX_EXCEPTION_SPEC
{
        initArgProp( time, renderScale );
        OfxStatus status = callEntry( kOfxInteractActionLoseFocus, &_argProperties );
        if( status != kOfxStatOK && status != kOfxStatReplyDefault )
                BOOST_THROW_EXCEPTION( OfxhException( status ) );
}

}
}
}
}