stuff
This commit is contained in:
John Cupitt
parent
f1d04ee443
commit
ad5df95c60
2
TODO
2
TODO
@ -1,3 +1,5 @@
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- im_magick2vips() needs rewriting, argh
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- add support for PFM files, portable float maps
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@ -9,6 +9,7 @@ libformat_la_SOURCES = \
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im_exr2vips.c \
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im_jpeg2vips.c \
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im_magick2vips.c \
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im_magickwand2vips.c \
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im_png2vips.c \
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im_ppm2vips.c \
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im_raw2vips.c \
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@ -606,7 +606,7 @@ magick_fill_region( REGION *out, void *seq, void *a, void *b )
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* @filename: file to load
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* @out: image to write to
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*
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* Read in an image useing libMagick, the ImageMagick library. This library can
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* Read in an image using libMagick, the ImageMagick library. This library can
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* read more than 80 file formats, including SVG, BMP, EPS, DICOM and many
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* others.
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* The reader can handle any ImageMagick image, including the float and double
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437
libvips/format/im_magickwand2vips.c
Normal file
437
libvips/format/im_magickwand2vips.c
Normal file
@ -0,0 +1,437 @@
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/* Read a file using MagickWand
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*
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* 29/4/10
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* - from im_magick2vips(), because that API seems to have been
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* deprecated, argh
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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/* Turn on debugging output.
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#define DEBUG
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#ifndef HAVE_MAGICK
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#include <vips/vips.h>
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int
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im_magick2vips( const char *filename, IMAGE *im )
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{
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im_error( "im_magick2vips", "%s",
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_( "libMagick support disabled" ) );
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return( -1 );
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}
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#else /*HAVE_MAGICK*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <sys/types.h>
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#include <vips/vips.h>
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#include <vips/buf.h>
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#include <vips/thread.h>
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#include <magick/api.h>
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#ifdef WITH_DMALLOC
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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/* pre-float Magick used to call this MaxRGB.
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*/
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#if !defined(QuantumRange)
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# define QuantumRange MaxRGB
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#endif
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/* And this used to be UseHDRI.
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*/
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#if MAGICKCORE_HDRI_SUPPORT
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# define UseHDRI=1
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#endif
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/* What we track during a read call.
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*/
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typedef struct _Read {
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char *filename;
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IMAGE *im;
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MagickWand *wand;
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ImageInfo *image_info;
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ExceptionInfo exception;
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int n_frames;
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Image **frames;
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int frame_height;
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/* Mutex to serialise calls to libMagick during threaded read.
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*/
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GMutex *lock;
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} Read;
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static int
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read_destroy( Read *read )
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{
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#ifdef DEBUG
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printf( "im_magick2vips: read_destroy: %s\n", read->filename );
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#endif /*DEBUG*/
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IM_FREEF( DestroyImage, read->image );
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IM_FREEF( DestroyImageInfo, read->image_info );
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IM_FREE( read->frames );
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IM_FREE( read->filename );
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DestroyExceptionInfo( &read->exception );
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IM_FREEF( g_mutex_free, read->lock );
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im_free( read );
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return( 0 );
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}
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static Read *
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read_new( const char *filename, IMAGE *im )
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{
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Read *read;
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static int inited = 0;
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if( !inited ) {
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InitializeMagick( "" );
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inited = 1;
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}
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if( !(read = IM_NEW( NULL, Read )) )
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return( NULL );
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read->filename = im_strdup( NULL, filename );
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read->im = im;
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read->image = NULL;
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read->image_info = CloneImageInfo( NULL );
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GetExceptionInfo( &read->exception );
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read->n_frames = 0;
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read->frames = NULL;
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read->frame_height = 0;
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read->lock = g_mutex_new();
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if( im_add_close_callback( im,
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(im_callback_fn) read_destroy, read, NULL ) ) {
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read_destroy( read );
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return( NULL );
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}
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if( !read->filename || !read->image_info )
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return( NULL );
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im_strncpy( read->image_info->filename, filename, MaxTextExtent );
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#ifdef DEBUG
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printf( "im_magick2vips: read_new: %s\n", read->filename );
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#endif /*DEBUG*/
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return( read );
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}
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static int
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get_bands( Image *image )
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{
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int bands;
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switch( image->colorspace ) {
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case GRAYColorspace:
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bands = 1;
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break;
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case RGBColorspace:
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bands = 3;
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break;
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case sRGBColorspace:
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bands = 3;
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break;
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case CMYKColorspace:
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bands = 4;
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break;
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default:
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im_error( "im_magick2vips", _( "unsupported colorspace %d" ),
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(int) image->colorspace );
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return( -1 );
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}
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/* Alpha as well?
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*/
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if( image->matte ) {
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assert( image->colorspace != CMYKColorspace );
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bands += 1;
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}
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return( bands );
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}
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static int
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parse_header( Read *read )
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{
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IMAGE *im = read->im;
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MagickWand *wand = read->wand;
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#ifdef HAVE_MAGICK_ATTR
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const ImageAttribute *attr;
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#endif /*HAVE_MAGICK_ATTR*/
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Image *p;
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int i;
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im->Xsize = MagickGetImageWidth( wand );
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im->Ysize = MagickGetImageHeight( wand );
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read->frame_height = MagickGetImageHeight( wand );
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if( (im->Bands = get_bands( image )) < 0 )
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return( -1 );
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/* Depth can be 'fractional'.
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*/
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depth = MagickGetImageChannelDepth( wand, AllChannels );
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im->BandFmt = -1;
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if( image->depth >= 1 && image->depth <= 8 )
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im->BandFmt = IM_BANDFMT_UCHAR;
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if( image->depth >= 9 && image->depth <= 16 )
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im->BandFmt = IM_BANDFMT_USHORT;
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#ifdef UseHDRI
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if( image->depth == 32 )
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im->BandFmt = IM_BANDFMT_FLOAT;
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if( image->depth == 64 )
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im->BandFmt = IM_BANDFMT_DOUBLE;
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#else /*!UseHDRI*/
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if( image->depth == 32 )
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im->BandFmt = IM_BANDFMT_UINT;
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#endif /*UseHDRI*/
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if( im->BandFmt == -1 ) {
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im_error( "im_magick2vips", _( "unsupported bit depth %d" ),
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(int) image->depth );
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return( -1 );
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}
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switch( image->colorspace ) {
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case GRAYColorspace:
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if( im->BandFmt == IM_BANDFMT_USHORT )
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im->Type = IM_TYPE_GREY16;
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else
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im->Type = IM_TYPE_B_W;
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break;
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case RGBColorspace:
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if( im->BandFmt == IM_BANDFMT_USHORT )
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im->Type = IM_TYPE_RGB16;
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else
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im->Type = IM_TYPE_RGB;
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break;
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case sRGBColorspace:
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if( im->BandFmt == IM_BANDFMT_USHORT )
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im->Type = IM_TYPE_RGB16;
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else
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im->Type = IM_TYPE_sRGB;
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break;
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case CMYKColorspace:
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im->Type = IM_TYPE_CMYK;
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break;
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default:
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im_error( "im_magick2vips", _( "unsupported colorspace %d" ),
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(int) image->colorspace );
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return( -1 );
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}
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switch( image->units ) {
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case PixelsPerInchResolution:
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im->Xres = image->x_resolution / 25.4;
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im->Yres = image->y_resolution / 25.4;
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break;
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case PixelsPerCentimeterResolution:
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im->Xres = image->x_resolution / 10.0;
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im->Yres = image->y_resolution / 10.0;
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break;
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default:
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im->Xres = 1.0;
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im->Yres = 1.0;
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break;
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}
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/* Other fields.
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*/
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im->Coding = IM_CODING_NONE;
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#ifdef HAVE_MAGICK_ATTR
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#ifdef HAVE_GETNEXTIMAGEATTRIBUTE
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/* Gah, magick6.something and later only. Attach any attributes.
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*/
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ResetImageAttributeIterator( image );
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while( (attr = GetNextImageAttribute( image )) ) {
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#elif defined(HAVE_GETIMAGEATTRIBUTE)
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/* GraphicsMagick is missing the iterator: we have to loop ourselves.
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* ->attributes is marked as private in the header, but there's no
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* getter so we have to access it directly.
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*/
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for( attr = image->attributes; attr; attr = attr->next ) {
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#else /*stuff*/
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#error attributes enabled, but no access funcs found
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#endif
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char name_text[256];
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VipsBuf name;
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vips_buf_init_static( &name, name_text, 256 );
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vips_buf_appendf( &name, "magick-%s", attr->key );
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im_meta_set_string( im, vips_buf_all( &name ), attr->value );
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#ifdef DEBUG
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printf( "key = \"%s\", value = \"%s\"\n",
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attr->key, attr->value );
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#endif /*DEBUG*/
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}
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#endif /*HAVE_MAGICK_ATTR*/
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/* Do we have a set of equal-sized frames? Append them.
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FIXME ... there must be an attribute somewhere from dicom read
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which says this is a volumetric image
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*/
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read->n_frames = 0;
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for( p = image; p; (p = GetNextImageInList( p )) ) {
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if( p->columns != (unsigned int) im->Xsize ||
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p->rows != (unsigned int) im->Ysize ||
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get_bands( p ) != im->Bands )
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break;
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read->n_frames += 1;
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}
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if( p )
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/* Nope ... just do the first image in the list.
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*/
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read->n_frames = 1;
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/* Record frame pointers.
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*/
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im->Ysize *= read->n_frames;
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if( !(read->frames = IM_ARRAY( NULL, read->n_frames, Image * )) )
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return( -1 );
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p = image;
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for( i = 0; i < read->n_frames; i++ ) {
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read->frames[i] = p;
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p = GetNextImageInList( p );
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}
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return( 0 );
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}
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static int
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magickwand2vips_header( const char *filename, IMAGE *im )
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{
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Read *read;
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if( !(read = read_new( filename, im )) )
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return( -1 );
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read->image = PingImage( read->image_info, &read->exception );
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if( !read->image ) {
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im_error( "im_magick2vips", _( "unable to ping file "
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"\"%s\"\nlibMagick error: %s %s" ),
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filename,
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read->exception.reason, read->exception.description );
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return( -1 );
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}
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if( parse_header( read ) )
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return( -1 );
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if( im->Xsize <= 0 || im->Ysize <= 0 ) {
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im_error( "im_magick2vips", "%s", _( "bad image size" ) );
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return( -1 );
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}
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return( 0 );
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}
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static int
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ismagickwand( const char *filename )
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{
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IMAGE *im;
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int result;
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if( !(im = im_open( "dummy", "p" )) )
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return( -1 );
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result = magickwand2vips_header( filename, im );
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im_error_clear();
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im_close( im );
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return( result == 0 );
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}
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static const char *magick_suffs[] = { NULL };
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/* magick format adds no new members.
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*/
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typedef VipsFormat VipsFormatMagickWand;
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typedef VipsFormatClass VipsFormatMagickWandClass;
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static void
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vips_format_magickwand_class_init( VipsFormatMagickWandClass *class )
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{
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VipsObjectClass *object_class = (VipsObjectClass *) class;
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VipsFormatClass *format_class = (VipsFormatClass *) class;
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object_class->nickname = "magickwand";
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object_class->description = _( "MagickWand-supported" );
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format_class->is_a = ismagickwand;
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format_class->header = magickwand2vips_header;
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//format_class->load = im_magickwand2vips;
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format_class->suffs = magickwand_suffs;
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/* This can be very slow :-( Use our own jpeg/tiff/png etc. loaders in
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* preference, if we can.
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*/
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format_class->priority = -1000;
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}
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static void
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vips_format_magickwand_init( VipsFormatMagickWand *object )
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{
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}
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G_DEFINE_TYPE( VipsFormatMagickWand, vips_format_magickwand, VIPS_TYPE_FORMAT );
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#endif /*HAVE_MAGICK*/
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