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|
/***********************************************************************/
/* Open Visualization Data Explorer */
/* (C) Copyright IBM Corp. 1989,1999 */
/* ALL RIGHTS RESERVED */
/* This code licensed under the */
/* "IBM PUBLIC LICENSE - Open Visualization Data Explorer" */
/***********************************************************************/
/*
* _IM_image.c : calls ImageMagick API to write files, especially useful for those files
* whose formats DX does not support natively.
* FIXED!: does not write intermediate miff file if the miff does not exist (i.e. is not to be appended).
*FIXME: dx does not know all extensions that IM supports, can dx query IM API for the
* supported extensions and thereby alleviate the tedious supplying of both format and extension?
*/
/*
* This was coded to preserve dx's prior behavior for other extensions/formats, entailing some complexity.
* How did we get here?
*
* Currently from WriteImage, there are two ways to get here:
* (1) special cases e.g. gif where an entry in ImageTable(in _rw_image.c)
* specifies the format and acceptable extensions and write_im is specified as the write function.
* The special case is triggered by giving the format and/or a listed extension.
* (2) "ImageMagick supported format" format was specified and or the extension was first matched in
* the table entry for "ImageMagick supported format" format.
* The extension must be included, recognized or not, in this case so ImageMagick knows what to write.
* This scheme permits the user to specify, via an extention, an output format the dx coders did not know about
* but that ImageMagick has added (perhaps later, perhaps as a delegate).
* This scheme also allows the coexistence of DX methods and IM methods for writing image files. For example,
* a format of null and an .rgb (or missing) extension gives the DX rgb output, while a format of
* "ImageMagick supported format" and an .rgb extension gives the more conventional raw red/green/blue bytes in a file.
* Another example is specifying "filename.miff" and "ImageMagick supported format", where dx writes its miff
* and IM converts and overwrites it to its liking.
*
* DX prefers the "format" to the extension, IM goes by the extension.
* WriteImage parameters can be (optional) format and (optional) filename+extension or filename .
* Whether dot-anything is accepted as an extension depends on the listing in ImageTable (_rw_image.c).
* dx will assume dx rgb format if the
*format is null and the filename's extension is not recognized (i.e. we won't get to this function).
*if dx recognized the extension for the format, the extension was
*removed from the basename and now the ImageArgs.extension points to the extension.
*however, dx will not (currently) have hardcoded all extensions that IM supports.
*So it is easily possible that by the time we get here, we have a format of "ImageMagick supported format" or null
* and a filename
* with or without an extension appended, with or without a null imageargs.extension.
*/
/*
* DX and IM name spaces collide on these terms (for IM 4.2.8 at least)
*/
#define ImageInfo DXImageInfo
#define ImageType DXImageType
#include <dxconfig.h>
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include <dx/dx.h>
#include "_helper_jea.h"
#include "_rw_image.h"
#include <sys/types.h>
#if defined(HAVE_UNISTD_H)
#include <unistd.h>
#endif
#if ( CAN_HAVE_ARRAY_DASD == 1 )
#include <iop/mov.h>
#include <iop/pfs.h>
#endif
#if defined(HAVE_SYS_STAT_H)
#include <sys/stat.h>
#endif
#ifdef HAVE_LIBMAGICK
/* we have some namespace conflicts with ImageMagick */
#undef ImageInfo
#undef ImageType
#include <magick/api.h>
#endif /* def HAVE_LIBMAGICK */
#if (0)
#define DEBUGMESSAGE(mess) DXMessage((mess))
#else
#define DEBUGMESSAGE(mess)
#endif
#define STREQ(s1,s2) (strcmp((s1),(s2))==0)
static Error write_im(RWImageArgs *iargs);
/*
* DXWrite out the given image in some format supported by ImageMagick
* currently through an intermediary file in miff (Magick Image File
* Format) though ideally this would use ImageMagick-4.2.8+'s blob support
* for in-memory translation.
*/
Error
_dxf_write_im(RWImageArgs *iargs) {
/*
* how does one error check ? let IM flag the error for an unsupported image format
* if (iargs->imgtyp != img_typ_fb)
* DXErrorGoto(ERROR_INTERNAL, "_dxf_write_fb: mismatched image types");
*/
return write_im(iargs);
}
static Error write_im(RWImageArgs *iargs) {
#ifdef HAVE_LIBMAGICK
RWImageArgs tmpargs = *iargs;
Image *image=NULL;
Image *resize_image=NULL;
int err = 0;
int pixelsize;
int linesize;
Field field;
Array array;
int i;
int dim[3], ndim;
int nx, ny;
Type dxcolortype;
int imcolortype;
char *p1, *p2;
void* colors;
void* copycolors=NULL;
char *compressFlag = NULL;
CompressionType ctype = UndefinedCompression;
ExceptionInfo
_dxd_exception_info;
ImageInfo* image_info;
ImageInfo* new_frame_info;
int miff_exists_flag = 0;
char* miff_filename = NULL;
FILE* miff_fp;
DEBUGMESSAGE("requested extension is ");
/* if basename's .ext recognized as a format, it is removed from basename and
* iargs->extension points to it */
if(!iargs->extension) {
/* no extension or not recognized */
if(iargs->format) {
if(strcmp(iargs->format,"ImageMagick supported format") && strcmp(iargs->format, "ImageMagick")) {
char* firstspace;
/* not "ImageMagick supported format" format, use format for extension */
iargs->extension=iargs->format;
/* strip junk we can't deal withafter format... like "gif delayed=1" */
firstspace=strchr(iargs->extension, ' ');
if(firstspace != NULL)
*firstspace='\0';
}
}
}
/* still no recognized extension or "unique" format? it had better be on the filename! */
if(!iargs->extension) {
int i;
for(i=strlen(iargs->basename);i>0;--i) {
if(iargs->basename[i]=='.') {
iargs->extension=&((iargs->basename)[i+1]);
iargs->basename[i]='\0';
i=0;
} else if (iargs->basename[i]=='/')
i=0;
}
}
/*
* before proceeding,
* find out if we can handle the conversion to the requested extension
*/
/*
* 8/99 some ambiguity here, since miff files are appendable.
* My arbitrary choice: if the miff file exists already, we append and do not erase.
* if the miff file does not exist, we erase when we are done.
* So if you want a multi-image file in some non-natively-supported-dx-format,
* writeimage to a miff, then on the last frame writeimage to e.g. an
* mpeg of the same name, specifying "im" format. Then it is up to you to erase it.
* Maybe some other scenario will prevail.
*/
/* Only appending to miff files with extension .miff or type MIFF ignore this for others */
if(strcmp(iargs->extension, "miff") == 0) {
tmpargs.format="miff";
tmpargs.imgtyp=img_typ_miff;
/* does file exist? */
miff_filename = (char *)DXAllocateLocal(strlen(iargs->basename)+strlen(tmpargs.format)+2);
strcpy(miff_filename,iargs->basename);
strcat(miff_filename,".");
strcat(miff_filename,tmpargs.format);
if((miff_fp=fopen(miff_filename,"r"))) {
miff_exists_flag=1;
fclose(miff_fp);
} else {
miff_exists_flag=0;
}
if(miff_filename) DXFree((Pointer)miff_filename);
}
GetExceptionInfo(&_dxd_exception_info);
image_info=CloneImageInfo((ImageInfo *) NULL);
if(miff_exists_flag) {
FILE *existFile, *newFrameFile;
char *buf;
int noir;
new_frame_info=CloneImageInfo((ImageInfo *) NULL);
DEBUGMESSAGE("starting miff appending");
DEBUGMESSAGE(iargs->basename);
/* _dxf_write_miff(&tmpargs); */
/*
Initialize the image info structure and read an image.
*/
(void) strcpy(image_info->filename,iargs->basename);
(void) strcat(image_info->filename,".");
(void) strcat(image_info->filename,tmpargs.format);
DEBUGMESSAGE("reading following file");
DEBUGMESSAGE(image_info->filename);
/* Now create new frame that will be added onto image. */
field=iargs->image;
array=(Array)DXGetComponentValue(field,"colors");
DXGetArrayInfo(array,NULL,&dxcolortype,NULL,NULL,NULL);
if (dxcolortype == TYPE_FLOAT) {
imcolortype = FloatPixel;
pixelsize = 3*sizeof(float);
} else {
imcolortype = CharPixel;
pixelsize = 3;
}
DXGetStringAttribute((Object)field, "compression", &compressFlag);
if(compressFlag == NULL)
ctype = UndefinedCompression;
else if(strcmp(compressFlag, "BZip")==0)
ctype = BZipCompression;
else if(strcmp(compressFlag, "Fax")==0)
ctype = FaxCompression;
else if(strcmp(compressFlag, "Group4")==0)
ctype = Group4Compression;
else if(strcmp(compressFlag, "JPEG")==0)
ctype = JPEGCompression;
else if(strcmp(compressFlag, "LZW")==0)
ctype = LZWCompression;
else if(strcmp(compressFlag, "RLE")==0)
ctype = RunlengthEncodedCompression;
else if(strcmp(compressFlag, "Zip")==0)
ctype = ZipCompression;
new_frame_info->compression = ctype;
colors=(void*)DXGetArrayData(array);
array=(Array)DXGetComponentValue(field,"connections");
DXQueryGridConnections(array,&ndim,dim);
nx=dim[1];
ny=dim[0];
copycolors = (void*) DXAllocate(nx*ny*pixelsize);
if(!copycolors) {
DestroyImageInfo(new_frame_info);
DestroyImageInfo(image_info);
DXErrorReturn( ERROR_INTERNAL , "out of memory allocating copycolors _im_image.c");
}
linesize= nx*pixelsize;
p1=(char*)colors;
p2=(char*)copycolors;
p1+=(ny-1)*linesize;
for (i=0; i<ny; ++i) {
memcpy(p2,p1,linesize);
p1-=linesize;
p2+=linesize;
}
image=ConstituteImage(nx,ny,"RGB",imcolortype,(void*)copycolors,&_dxd_exception_info);
if (!image) {
DestroyImageInfo(new_frame_info);
DestroyImageInfo(image_info);
DXFree(copycolors);
DXErrorReturn( ERROR_INTERNAL , "out of memory allocating Image _im_image.c");
}
image->compression = ctype;
new_frame_info->compression = ctype;
{
char gam[7];
sprintf(gam, "%2.4f", iargs->gamma);
GammaImage(image, gam);
}
TemporaryFilename(image->filename);
strcpy(new_frame_info->filename, image->filename);
DEBUGMESSAGE(new_frame_info->filename);
if(iargs->reduction > 0) {
int width = (int)(iargs->reduction/100.0 * nx);
int height = (int)(iargs->reduction/100.0 * ny);
resize_image = ResizeImage(image, width, height, LanczosFilter, 1.0, &_dxd_exception_info);
if (!image) {
DestroyImageInfo(image_info);
DXFree(copycolors);
DXErrorReturn( ERROR_INTERNAL , "out of memory allocating Image for resize in _im_image.c");
} else {
DestroyImage(image);
image = resize_image;
}
}
/* Write to temp file */
err = WriteImage(new_frame_info, image);
if(err == 0) {
DXFree(copycolors);
DestroyImage(image);
DestroyImageInfo(new_frame_info);
DestroyImageInfo(image_info);
#if MagickLibVersion > 0x0537
ConstituteComponentTerminus();
#endif
DXSetError(ERROR_INTERNAL, "reason = %s, description = %s",
image->exception.reason,
image->exception.description);
}
/* Now append image */
buf = (char*) DXAllocate(4000);
if (!buf) {
DXFree(copycolors);
DestroyImage(image);
DestroyImageInfo(new_frame_info);
DestroyImageInfo(image_info);
#if MagickLibVersion > 0x0537
ConstituteComponentTerminus();
#endif
DXErrorReturn( ERROR_INTERNAL , "out of memory allocating buffer _im_image.c");
}
existFile = fopen(image_info->filename, "ab");
newFrameFile = fopen(new_frame_info->filename, "rb");
while( !feof(newFrameFile) ) {
noir = fread(buf, 1, 4000, newFrameFile);
if(fwrite(buf, 1, noir, existFile) != noir) {
DXErrorReturn( ERROR_INTERNAL, "error writing file." );
}
}
fclose(existFile);
fclose(newFrameFile);
remove(new_frame_info->filename);
DEBUGMESSAGE("back from appending the image, what did I get?");
/* Now cleanup */
DXFree(buf);
DXFree(copycolors);
DestroyImage(image);
DestroyImageInfo(image_info);
DestroyImageInfo(new_frame_info);
#if MagickLibVersion > 0x0537
ConstituteComponentTerminus();
#endif
DEBUGMESSAGE("back from DestroyImage");
} else { /* miff does not exist, do this the new way by ConstituteImage */
field=iargs->image;
array=(Array)DXGetComponentValue(field,"colors");
DXGetArrayInfo(array,NULL,&dxcolortype,NULL,NULL,NULL);
if (dxcolortype == TYPE_FLOAT) {
imcolortype = FloatPixel;
pixelsize = 3*sizeof(float);
} else {
imcolortype = CharPixel;
pixelsize = 3;
}
ctype = UndefinedCompression;
if(iargs->compression) {
if(strcmp(iargs->compression, "BZip")==0)
ctype = BZipCompression;
else if(strcmp(iargs->compression, "Fax")==0)
ctype = FaxCompression;
else if(strcmp(iargs->compression, "Group4")==0)
ctype = Group4Compression;
else if(strcmp(iargs->compression, "JPEG")==0)
ctype = JPEGCompression;
else if(strcmp(iargs->compression, "LZW")==0)
ctype = LZWCompression;
else if(strcmp(iargs->compression, "RLE")==0)
ctype = RunlengthEncodedCompression;
else if(strcmp(iargs->compression, "Zip")==0)
ctype = ZipCompression;
}
if(iargs->quality > 0)
image_info->quality = iargs->quality;
colors=(void*)DXGetArrayData(array);
array=(Array)DXGetComponentValue(field,"connections");
DXQueryGridConnections(array,&ndim,dim);
nx=dim[1];
ny=dim[0];
copycolors = (void*) DXAllocate(nx*ny*pixelsize);
if(!copycolors) {
DestroyImageInfo(image_info);
DXErrorReturn( ERROR_INTERNAL , "out of memory allocating copycolors _im_image.c");
}
linesize= nx*pixelsize;
p1=(char*)colors;
p2=(char*)copycolors;
p1+=(ny-1)*linesize;
for (i=0; i<ny; ++i) {
memcpy(p2,p1,linesize);
p1-=linesize;
p2+=linesize;
}
image=ConstituteImage(nx,ny,"RGB",imcolortype,(void*)copycolors,&_dxd_exception_info);
if (!image) {
DestroyImageInfo(image_info);
DXFree(copycolors);
DXErrorReturn( ERROR_INTERNAL , "out of memory allocating Image _im_image.c");
}
/*
Write the image with ImageMagick
*/
strcpy(image->filename,iargs->basename);
if(iargs->extension) {
strcat(image->filename,".");
strcat(image->filename,iargs->extension);
}
{
char gam[7];
sprintf(gam, "%2.4f", iargs->gamma);
GammaImage(image, gam);
}
/*
* Allow the user to use ImageMagick's resize filters to resize the image when
* writing. This gives us a cheap way to set up anti-aliasing.
*/
if(iargs->reduction > 0) {
int width = (int)(iargs->reduction/100.0 * nx);
int height = (int)(iargs->reduction/100.0 * ny);
resize_image = ResizeImage(image, width, height, LanczosFilter, 1.0, &_dxd_exception_info);
if (!image) {
DestroyImageInfo(image_info);
DXFree(copycolors);
DXErrorReturn( ERROR_INTERNAL , "out of memory allocating Image for resize in _im_image.c");
} else {
DestroyImage(image);
image = resize_image;
}
}
image->compression = ctype;
image_info->compression = ctype;
DEBUGMESSAGE(image->filename);
err = WriteImage(image_info,image);
if(err == 0) {
DXSetError(ERROR_INTERNAL, "reason = %s, description = %s",
image->exception.reason,
image->exception.description);
}
DXFree(copycolors);
DestroyImage(image);
DestroyImageInfo(image_info);
#if MagickLibVersion > 0x0537
ConstituteComponentTerminus();
#endif
}
return (OK);
#else /* ndef HAVE_LIBMAGICK */
DXErrorReturn(ERROR_NOT_IMPLEMENTED,"ImageMagick not included in build");
#endif /* def HAVE_LIBMAGICK */
}
/*
* Search names, in order:
* ".<ext>", ".0.<ext>"
*
* set states saying whether:
* contains numeric
*/
char * _dxf_BuildIMReadFileName
( char *buf,
int bufl,
char *basename, /* Has path but no extension */
char *fullname, /* As specified */
char *extension, /* File extension */
int framenum,
int *numeric ) /* Numbers postfixed onto name or not? */
{
int i;
int fd = -1;
int appendable_files = 0;
char framestr[16];
DXASSERTGOTO ( NULL != buf );
DXASSERTGOTO ( 0 < bufl );
DXASSERTGOTO ( NULL != basename );
DXASSERTGOTO ( NULL != fullname );
DXASSERTGOTO ( NULL != extension );
DXASSERTGOTO ( 0 <= framenum );
DXASSERTGOTO ( NULL != numeric );
for ( i = 0; i < 2; i++ ) {
*numeric = i;
if ( *numeric && ( framenum == VALUE_UNSPECIFIED ) )
continue;
if (*numeric && !appendable_files)
sprintf(framestr,".%d",framenum);
else
framestr[0] = '\0';
/* Make sure buffer is big enough */
if ((strlen(basename) + strlen(framestr) + strlen(extension) + 2) > bufl)
DXErrorReturn(ERROR_INTERNAL,"Insufficient storage space for filename");
sprintf( buf, "%s%s.%s", basename, framestr, extension );
if ( 0 <= ( fd = open ( buf, O_RDONLY ) ) )
break;
}
if ( 0 > fd ) {
*numeric = 0;
strcpy ( buf, basename );
fd = open ( buf, O_RDONLY );
}
DXDebug( "R",
"_dxf_BuildIMReadFileName: File = %s, numeric = %d",
buf, *numeric );
if (fd > -1)
close ( fd );
return buf;
}
/*
* Determine the number of images in an ImageMagick file.
*/
#if defined(HAVE_LIBMAGICK)
static int _dxf_GetNumImagesInFile( ImageInfo *image_info ) {
/* FIXME: Currently, ImageMagick has no way to determine the number of
* images in a (potentially multi-image) image file without reading
* the data for all of the images into memory at once. This was
* confirmed by folks on the ImageMagick mailing list.
*
* Primary evidence of this is that some readers (e.g. PNG) completely
* ignore the ImageInfo subimage and subrange fields, and Magick does
* not support reading images (all or a subset) in ping=1 mode.
* So subimage specification and multi-image ping is pointless.
*
* We have a choice here between:
* 1) general, typeless image handling, where we take a performance hit
* to read all images in a multi-image sequence into VM (possibly
* exhausting VM) to access all, one, or some subset in DX
* 2) general, typeless image handling, where we limit access to only
* one sub-image
* 3) special cases based on image type
*
* Because we support separate-file multi-image read via IM, and
* DX's native TIFF and MIFF readers support single-file multi-image, we
* choose option #2. This routine should be fixed if/when ImageMagick
* adds better support for single-file multi-image reads.
*/
return 1;
}
#endif
/*
* Set a SizeData struct with values.
* set state saying whether:
* has multiple images in file
* Careful:
* if the images are stored internally,
* then reset the use_numerics flag.
*/
SizeData * _dxf_ReadImageSizesIM
( char *name,
int startframe,
SizeData *data,
int *use_numerics,
int *multiples ) {
#if !defined(HAVE_LIBMAGICK)
DXErrorReturn(ERROR_NOT_IMPLEMENTED,"ImageMagick 5 not included in build");
#else
Image *image;
ImageInfo *image_info = NULL;
ExceptionInfo _dxd_exception_info;
char user_basename [ MAX_IMAGE_NAMELEN ];
char newname[ MAX_IMAGE_NAMELEN ];
char extension[40];
int fh;
DXASSERTGOTO ( ERROR != name );
DXASSERTGOTO ( ERROR != data );
DXASSERTGOTO ( ERROR != use_numerics );
DXASSERTGOTO ( ERROR != multiples );
/* Magick init */
GetExceptionInfo( &_dxd_exception_info );
image_info = CloneImageInfo( NULL );
/* PingImage returns info on the first image (possibly in a sequence) */
image_info->filename[0] = '\0';
strncat( image_info->filename, name, sizeof( image_info->filename ) - 1 );
if ( (image = PingImage( image_info, &_dxd_exception_info )) == NULL )
DXErrorGoto2( ERROR_BAD_PARAMETER, "#13950",
/* failed to read image in file '%s' */ name );
data->height = image->rows;
data->width = image->columns;
data->startframe = ( startframe == VALUE_UNSPECIFIED ) ? 0 : startframe;
data->endframe = ( data->startframe +
_dxf_GetNumImagesInFile( image_info ) - 1 );
*multiples = data->startframe != data->endframe;
if ( *multiples )
*use_numerics = 0;
/*
* Intent: If use_numerics (implies there aren't multiple images
* in this file), see if there are multiple numbered files on disk.
*/
if ( !(*use_numerics) )
*multiples = 0;
else {
/* Magick filenames "always" have a filetype extension */
user_basename[0] = extension[0] = '\0';
_dxf_ExtractImageExtension(name,img_typ_im,
extension,sizeof(extension));
strncat( user_basename, name, sizeof(user_basename)-1 );
_dxf_RemoveImageExtension( user_basename, img_typ_im );
_dxf_RemoveExtension( user_basename );
do {
sprintf( newname, "%s.%d.%s",
user_basename, data->endframe, extension );
if ( (fh = open ( newname, O_RDONLY )) < 0 )
break;
close ( fh );
data->endframe++;
DXDebug ( "R", "_dxf_ReadImageSizesIM: opened: %s", newname );
} while ( 1 );
data->endframe--;
}
DXDebug ( "R",
"_dxf_ReadImageSizesIM: h,w, s,e = %d,%d, %d,%d; "
"numer = %d, multi = %d",
data->height, data->width, data->startframe, data->endframe,
*use_numerics, *multiples );
if ( image_info )
DestroyImageInfo( image_info );
if ( image )
DestroyImage( image );
return data;
error:
if ( image_info )
DestroyImageInfo( image_info );
if ( image )
DestroyImage( image );
return NULL;
#endif /* HAVE_LIBMAGICK */
}
/*
* Read an image from a file into a DX image field using ImageMagick.
*/
Field _dxf_InputIM( int width, int height, char *name, int relframe,
int delayed, char *colortype ) {
#if !defined(HAVE_LIBMAGICK)
DXErrorReturn(ERROR_NOT_IMPLEMENTED,"ImageMagick 5 not included in build");
#else
Field dx_image = NULL;
Image *image = NULL,
*image_tmp;
ImageInfo *image_info = NULL;
ImageType image_type;
ExceptionInfo _dxd_exception_info;
Type type;
int rank, shape[32];
Array colorsArray = NULL;
Array opacitiesArray = NULL;
Pointer pixels;
Pointer opacities = NULL;
StorageType storage_type;
int i;
DXDebug ( "R", "_dxf_InputIM: name = %s, relframe = %d", name, relframe );
if ((width * height) == 0)
DXErrorGoto2( ERROR_BAD_PARAMETER, "#12275", 0 );
/* Magick init */
GetExceptionInfo( &_dxd_exception_info );
image_info = CloneImageInfo( NULL );
image_info->filename[0] = '\0';
strncat( image_info->filename, name, sizeof( image_info->filename ) - 1 );
image_info->subimage=relframe;
image_info->subrange=1;
if ( (image = ReadImage( image_info, &_dxd_exception_info )) == NULL )
DXErrorGoto2( ERROR_BAD_PARAMETER, "#13950",
/* failed to read image in file '%s' */ name );
if ( width != image->columns || height != image->rows )
DXErrorGoto(ERROR_INTERNAL,
"Image dimensions don't match requested dimensions" );
/* If it's CMYK, convert to RGB. */
if ( image->colorspace == CMYKColorspace )
if ( !TransformRGBImage( image, RGBColorspace ) )
DXErrorGoto(ERROR_INTERNAL, "CMYK->RGB transform failed" );
/*
* Set the colors (and possibly color map) components
*/
#if MagickLibVersion < 0x0540
image_type = GetImageType( image );
#else
image_type = GetImageType( image, &_dxd_exception_info );
#endif
switch ( image_type ) {
default :
/* Since we handled CMYK above, we should never get here */
DXErrorGoto2( ERROR_DATA_INVALID, "#13960", image_type );
/**********************************************************************/
/* OPTION #1: Source is RGB direct (dest is float or byte direct) */
case TrueColorType :
case TrueColorMatteType :
/* Create the image field */
dx_image = DXMakeImageFormat(width, height, colortype);
if (! dx_image)
goto error;
colorsArray = (Array)DXGetComponentValue(dx_image, "colors");
DXGetArrayInfo(colorsArray, NULL, &type, NULL, &rank, shape);
/* Colors are 3-vectors (direct) */
if (rank != 1 || shape[0] != 3 ||
(type != TYPE_UBYTE && type != TYPE_FLOAT))
DXErrorGoto(ERROR_INTERNAL,
"Invalid image field direct color format" );
storage_type = ( type == TYPE_UBYTE ) ? CharPixel : FloatPixel;
pixels = DXGetArrayData(colorsArray);
/* Transfer the pixels to the field */
/* (NOTE: DX stores rows bottom-to-top, so flip first) */
image_tmp = FlipImage( image, &_dxd_exception_info );
if ( !image_tmp )
DXErrorGoto(ERROR_INTERNAL, "Failed to flip image" );
DestroyImage( image );
image = image_tmp;
#if MagickLibVersion < 0x0540
DispatchImage( image, 0, 0, width, height, "RGB", storage_type,
pixels );
#else
DispatchImage( image, 0, 0, width, height, "RGB", storage_type,
pixels, &_dxd_exception_info);
#endif
/* Handle transparency (opacities are floats) */
if ( image->matte ) {
float *optr;
if ( !(opacitiesArray = DXNewArray( TYPE_FLOAT,
CATEGORY_REAL, 0 )) ||
!DXAddArrayData( opacitiesArray, 0, width*height, NULL) ||
!DXSetComponentValue( (Field)dx_image, "opacities",
(Object)opacitiesArray ) ||
!(opacities = DXGetArrayData(opacitiesArray)) ||
!DXEndField( (Field)dx_image ) )
DXErrorGoto(ERROR_INTERNAL, "Failed to create opacities" );
#if MagickLibVersion < 0x0540
DispatchImage( image, 0, 0, width, height, "A", FloatPixel,
opacities );
#else
DispatchImage( image, 0, 0, width, height, "A", FloatPixel,
opacities, &_dxd_exception_info );
#endif
for ( i = width * height, optr = (float *)opacities;
i > 0; i--, optr++ )
*optr = 1.0 - *optr;
}
break;
/**********************************************************************/
/* OPTION #2: Source is palettized (includes gray scale or B&W) */
/* (dest is float or byte direct, or byte delayed with a */
/* 256-element float colormap) */
case PaletteType :
case PaletteMatteType :
case GrayscaleType :
case GrayscaleMatteType :
case BilevelType :
/* ReadImage(delayed=<y/n>) only applies to delayed color images */
if (delayed == DELAYED_YES)
colortype = COLORTYPE_DELAYED;
/* Create the image field */
dx_image = DXMakeImageFormat(width, height, colortype);
if (! dx_image)
goto error;
colorsArray = (Array)DXGetComponentValue(dx_image, "colors");
DXGetArrayInfo(colorsArray, NULL, &type, NULL, &rank, shape);
pixels = DXGetArrayData(colorsArray);
/* Colors are 3-vectors (direct) */
if (rank == 1 && shape[0] == 3) {
if (type != TYPE_UBYTE && type != TYPE_FLOAT)
DXErrorGoto(ERROR_INTERNAL,
"Invalid image field direct color format" );
storage_type = ( type == TYPE_UBYTE ) ? CharPixel : FloatPixel;
/* Transfer the pixels to the field */
/* (NOTE: DX stores rows bottom-to-top, so flip first) */
image_tmp = FlipImage( image, &_dxd_exception_info );
if ( !image_tmp )
DXErrorGoto(ERROR_INTERNAL,
"Failed to flip image" );
DestroyImage( image );
image = image_tmp;
#if MagickLibVersion < 0x0540
DispatchImage( image, 0, 0, width, height, "RGB", storage_type,
pixels );
#else
DispatchImage( image, 0, 0, width, height, "RGB", storage_type,
pixels, &_dxd_exception_info );
#endif
/* Handle transparency (opacities are floats) */
if ( image->matte ) {
float *optr;
if ( !(opacitiesArray = DXNewArray( TYPE_FLOAT,
CATEGORY_REAL, 0 )) ||
!DXAddArrayData( opacitiesArray, 0, width*height, NULL) ||
!DXSetComponentValue( (Field)dx_image, "opacities",
(Object)opacitiesArray ) ||
!(opacities = DXGetArrayData(opacitiesArray)) ||
!DXEndField( (Field)dx_image ) )
DXErrorGoto(ERROR_INTERNAL, "Failed to create opacities" );
#if MagickLibVersion < 0x0540
DispatchImage( image, 0, 0, width, height, "A", FloatPixel,
opacities );
#else
DispatchImage( image, 0, 0, width, height, "A", FloatPixel,
opacities, &_dxd_exception_info );
#endif
for ( i = width * height, optr = (float *)opacities;
i > 0; i--, optr++ )
*optr = 1.0 - *optr;
}
}
/* Colors are scalars (delayed) */
else if (rank == 0 || (rank == 1 && shape[0] == 1)) {
Type mType;
int mRank, mShape[32], mLen;
int i,x,y;
float (*cmap)[3], *omap = NULL;
Array colorMap, opacityMap;
colorMap = (Array)DXGetComponentValue(dx_image, "color map");
if (! colorMap)
DXErrorGoto(ERROR_INTERNAL,
"single-valued image requires a color map" );
DXGetArrayInfo(colorMap, &mLen, &mType, NULL, &mRank, mShape);
if (mLen != 256 || mType != TYPE_FLOAT ||
mRank != 1 || mShape[0] != 3)
DXErrorGoto(ERROR_INTERNAL,
"DXMakeImageFormat returned invalid delayed-color image");
cmap = (float (*)[3]) DXGetArrayData(colorMap);
/* If transparency, opacities is byte & opacity map is float */
if ( image->matte ) {
if ( !(opacitiesArray = DXNewArray( TYPE_UBYTE,
CATEGORY_REAL, 0 )) ||
!DXAddArrayData( opacitiesArray, 0, width*height, NULL) ||
!DXSetComponentValue( (Field)dx_image, "opacities",
(Object)opacitiesArray ) ||
!(opacities = DXGetArrayData(opacitiesArray)) )
DXErrorGoto(ERROR_INTERNAL, "Failed to create opacities" );
if ( !(opacityMap = DXNewArray( TYPE_FLOAT,
CATEGORY_REAL, 0 )) ||
!DXAddArrayData( opacityMap, 0, 256, NULL) ||
!DXSetComponentValue( (Field)dx_image, "opacity map",
(Object)opacityMap ) ||
!(omap = DXGetArrayData(opacityMap)) )
DXErrorGoto(ERROR_INTERNAL, "Failed to create opacity map");
if ( !DXEndField( (Field)dx_image ) )
DXErrorGoto(ERROR_INTERNAL, "Failed to close field");
}
/* Read the colormap */
for ( i = 0; i < image->colors; i++ ) {
cmap[i][0] = ((float) image->colormap[i].red ) / MaxRGB;
cmap[i][1] = ((float) image->colormap[i].green ) / MaxRGB;
cmap[i][2] = ((float) image->colormap[i].blue ) / MaxRGB;
if ( image->matte )
omap[i] = (1.0 -
((float) image->colormap[i].opacity ) / MaxRGB);
}
for ( ; i < 256; i++ ) {
cmap[i][0] = cmap[i][1] = cmap[i][2] = 0.0;
if ( image->matte )
omap[i] = 0.0;
}
/* Now copy the pixels (i.e. color/opacity map indicies) */
for ( y = 0; y < height; y++ ) {
ubyte *pptr = ((ubyte *)pixels ) + (height-1-y)*width;
ubyte *optr = NULL;
PixelPacket *pixies;
IndexPacket *indexes, *indexes2;
if ( image->matte )
optr = ((ubyte *)opacities) + (height-1-y)*width;
pixies = GetImagePixels( image, 0, y, width, 1 );
indexes = indexes2 = GetIndexes( image );
if ( sizeof(indexes[0]) == 1 )
memcpy( pptr, indexes, width );
else
for ( x = 0; x < width; x++ )
if( image->matte )
*(pptr++) = *(optr++) = *(indexes++);
else
*(pptr++) = *(indexes++);
/* Opacities in colormap is wrong; use direct color map */
if ( image->matte )
for ( x = 0; x < width; x++ )
omap[*(indexes2++)] = ( 1.0 -
((float) (pixies++)->opacity) / MaxRGB );
}
} else
DXErrorGoto( ERROR_INTERNAL, "unexpected image field format" );
break;
}
if ( image_info )
DestroyImageInfo( image_info );
if ( image )
DestroyImage( image );
return dx_image;
error:
if ( image_info )
DestroyImageInfo( image_info );
if ( image )
DestroyImage( image );
return NULL;
#endif /* HAVE_LIBMAGICK */
}
int /* 0/1 on failure/success */
_dxf_ValidImageExtensionIM(char *ext) {
#if !defined(HAVE_LIBMAGICK)
DXErrorReturn(ERROR_NOT_IMPLEMENTED,"ImageMagick 5 not included in build");
#else
ExceptionInfo _dxd_exception_info;
const MagickInfo *minfo;
GetExceptionInfo( &_dxd_exception_info );
minfo = GetMagickInfo( ext, &_dxd_exception_info );
return (minfo != NULL);
#endif
}
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