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////////////////////////////////////////////////////////
//
// GEM - Graphics Environment for Multimedia
//
// zmoelnig@iem.at
//
// Implementation file
//
// Copyright (c) 1997-1999 Mark Danks.
// Copyright (c) Gnther Geiger.
// Copyright (c) 2001-2011 IOhannes m zmlnig. forum::fr::umlute. IEM. zmoelnig@iem.at
// For information on usage and redistribution, and for a DISCLAIMER OF ALL
// WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
//
/////////////////////////////////////////////////////////
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
/* this implements ImageMagick loading/saving using MagickCore */
#include "imageMAGICK.h"
#include "Gem/RTE.h"
#include "Gem/GemGL.h"
#ifdef _MSC_VER
# if !defined(_W64)
# if !defined(__midl) && (defined(_X86_) || defined(_M_IX86)) && _MSC_VER >= 1300
# define _W64 __w64
# else
# define _W64
# endif
# endif
# ifdef _WIN64
typedef __int64 ssize_t;
# else
typedef _w64 long ssize_t;
# endif
#endif
#ifdef HAVE_MAGICK7
# include <MagickCore/MagickCore.h>
#else
# include <magick/MagickCore.h>
#endif
using namespace gem::plugins;
namespace
{
static bool showException(ExceptionInfo*exception,
const std::string&prefix=std::string())
{
if(!exception) {
return true;
}
if (exception->severity == UndefinedException) {
return false;
}
bool iswarning=exception->severity < ErrorException;
std::string message=prefix;
message+="[";
message+= SetClientName(0);
message+="]";
if(!iswarning) {
message+"!";
}
message+=": ";
if ( exception->reason != 0 ) {
message += std::string(exception->reason);
}
if ( exception->description != 0 ) {
message += " (" + std::string(exception->description) + ")";
}
if(iswarning) {
verbose(0, "[GEM:imageMAGICK] %s", message.c_str());
} else {
verbose(0, "[GEM:imageMAGICK] %s", message.c_str());
}
return (!iswarning);
}
}
/////////////////////////////////////////////////////////
// really open the file ! (OS dependent)
//
/////////////////////////////////////////////////////////
bool imageMAGICK :: load(std::string filename, imageStruct&result,
gem::Properties&props)
{
bool success=false;
ExceptionInfo*exception=AcquireExceptionInfo();
ImageInfo*image_info=CloneImageInfo((ImageInfo *) NULL);
CopyMagickString(image_info->filename,filename.c_str(), MaxTextExtent);
Image*image=ReadImage(image_info,exception);
if(showException(exception, "reading problem")) {
goto cleanup;
}
if (image == (Image *) NULL) {
goto cleanup;
}
result.xsize=static_cast<GLint>(image->columns);
result.ysize=static_cast<GLint>(image->rows);
result.setCsizeByFormat(GL_RGBA_GEM);
result.reallocate();
result.upsidedown=true;
ExportImagePixels(image, 0, 0, result.xsize, result.ysize,
#ifdef __APPLE__
"ARGB",
#else
"RGBA",
#endif
CharPixel,
reinterpret_cast<void*>(result.data),
exception);
if(showException(exception, "decoding problem")) {
goto cleanup;
}
success=true;
cleanup:
if(image) {
DestroyImage(image);
}
image=NULL;
if(image_info) {
image_info=DestroyImageInfo(image_info);
}
if(exception) {
exception=DestroyExceptionInfo(exception);
}
return success;
}
bool imageMAGICK::save(const imageStruct&image, const std::string&filename,
const std::string&mimetype, const gem::Properties&props)
{
MagickBooleanType status = MagickFalse;
imageStruct*img=const_cast<imageStruct*>(&image);
imageStruct*pImage=img;
ImageInfo*image_info=CloneImageInfo((ImageInfo *) NULL);
Image*finalImage=NULL;
std::string cs;
switch(img->format) {
case GL_LUMINANCE:
cs="K";
break;
case GL_RGBA:
#ifdef __APPLE__
cs="ABGR";
#else
cs="RGBA";
#endif
break;
default:
pImage=new imageStruct();
pImage->convertFrom(img, GL_RGB);
case GL_RGB:
cs="RGB";
break;
case GL_BGRA_EXT:
#ifdef __APPLE__
cs="ARGB";
#else
cs="BGRA";
#endif
break;
}
ExceptionInfo*ex = 0;
ExceptionInfo*exception=AcquireExceptionInfo();
Image *mimage = ConstituteImage(pImage->xsize, pImage->ysize,
cs.c_str(), CharPixel,
pImage->data, exception);
if(showException(exception, "conversion problem")) {
goto cleanup;
}
finalImage=(pImage->upsidedown)?mimage:FlipImage( mimage, exception );
if(showException(exception, "flipping problem")) {
goto cleanup;
}
finalImage->depth=8;
image_info->depth = 8;
double quality;
if(props.get("quality", quality)) {
finalImage->quality=quality;
image_info->quality = quality;
}
ex = exception;
CopyMagickString(image_info->filename, filename.c_str(), MaxTextExtent);
CopyMagickString(finalImage->filename, filename.c_str(), MaxTextExtent);
SetImageInfo(image_info, 0, ex);
#ifdef HAVE_MAGICK7
status = WriteImage(image_info, finalImage, ex);
#else
status = WriteImage(image_info, finalImage);
ex = &finalImage->exception;
#endif
if(showException(ex, "writing problem")) {
goto cleanup;
}
cleanup:
if(finalImage!=mimage) {
finalImage=DestroyImage(finalImage);
}
mimage=DestroyImage(mimage);
exception=DestroyExceptionInfo(exception);
image_info=DestroyImageInfo(image_info);
return (status == MagickTrue);
}
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