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imagesource_combine.cpp
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imagesource_combine.cpp
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#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include "imagesource_combine.h"
using namespace std;
ImageSource_Combine::~ImageSource_Combine()
{
if(prev)
delete prev;
if(source)
delete source;
}
ISDataType *ImageSource_Combine::GetRow(int row)
{
int i;
float cc,cm,cy,ck;
float sc,sm,sy,sk;
float c,m,y,k;
ISDataType *rb;
ISDataType *dst;
ISDataType *src=source->GetRow(row);
if(prev)
{
dst=rb=prev->GetRow(row);
}
else
{
dst=rb=rowbuffer;
for(i=0;i<width;++i)
{
dst[i*4]=0.0;
dst[i*4+1]=0.0;
dst[i*4+2]=0.0;
dst[i*4+3]=0.0;
}
}
cc=colour[0]; cc/=IS_SAMPLEMAX;
cm=colour[1]; cm/=IS_SAMPLEMAX;
cy=colour[2]; cy/=IS_SAMPLEMAX;
ck=colour[3]; ck/=IS_SAMPLEMAX;
switch(source->type)
{
case IS_TYPE_GREY:
for(i=0;i<width;++i)
{
sc=*src++;
c=sc*cc;
m=sc*cm;
y=sc*cy;
k=sc*ck;
(*dst++)+=c;
(*dst++)+=m;
(*dst++)+=y;
(*dst++)+=k;
}
break;
case IS_TYPE_CMYK:
for(i=0;i<width;++i)
{
sc=*src++;
sm=*src++;
sy=*src++;
sk=*src++;
c=sc*cc;
m=sm*cm;
y=sy*cy;
k=sk*ck;
(*dst++)+=c;
(*dst++)+=m;
(*dst++)+=y;
(*dst++)+=k;
}
break;
default:
break;
}
return(rb);
}
ImageSource_Combine::ImageSource_Combine(struct ImageSource *source,ISDeviceNValue &colour,struct ImageSource *prev,IS_TYPE type,int channels) :
ImageSource(source), source(source), colour(colour), prev(prev)
{
this->type=type;
switch(type)
{
case IS_TYPE_RGB:
samplesperpixel=3;
break;
case IS_TYPE_RGBA:
samplesperpixel=4;
break;
case IS_TYPE_CMYK:
samplesperpixel=4;
break;
case IS_TYPE_CMYKA:
samplesperpixel=5;
break;
case IS_TYPE_DEVICEN:
samplesperpixel=channels;
break;
default:
throw "ImageSource_Combine: Unsupported type";
break;
}
MakeRowBuffer();
}