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move fits read/write to new-style

This commit is contained in:
John Cupitt 2011-12-13 17:50:55 +00:00
parent a2ed2edb5d
commit 0137186205
11 changed files with 1145 additions and 759 deletions
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3
ChangeLog
View File

@ -13,7 +13,8 @@
im_moreeq*(), im_remainder*(), im_and*(), im_or*(), im_eor*(), im_shift*(),
im_pow*(), im_exp*(), im_ifthenelse(), im_blend(), im_c2amph(), im_c2rect(),
im_bandmean(), im_c2real(), im_c2imag(), im_ri2c(), im_jpeg*2vips(),
im_vips2jpeg*(), im_tiff2vips(), im_vips2tiff(), im_exr2vips()
im_vips2jpeg*(), im_tiff2vips(), im_vips2tiff(), im_exr2vips(),
im_fits2vips(), im_vips2fits()
redone as classes
- added argument priorites to help control arg ordering
- generate has a 'stop' param to signal successful early termination

9
TODO
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@ -1,9 +1,18 @@
- fits bandjoin is rubbish
perhaps we should always allocate the output in the loader? it's make fits
bandjoin simpler
- "header fred.png" does not work, since header uses im_open() which uses
VipsForeign
- make the old format/vips.c into a stub as well?
move format/* to deprecated

6
configure.in
View File

@ -492,6 +492,12 @@ if test x"$with_cfitsio" != "xno"; then
])
fi
if test x"$with_cfitsio" = x"yes"; then
AM_CONDITIONAL(HAVE_CFITSIO, true)
else
AM_CONDITIONAL(HAVE_CFITSIO, false)
fi
# pangoft2
AC_ARG_WITH([pangoft2],
AS_HELP_STRING([--without-pangoft2],

14
libvips/foreign/Makefile.am
View File

@ -19,6 +19,20 @@ EXTRA_DIST += \
openexrload.c
endif
if HAVE_CFITSIO
libforeign_la_SOURCES += \
fits.h \
fits.c \
fitssave.c \
fitsload.c
else
EXTRA_DIST += \
fits.h \
fits.c \
fitssave.c \
fitsload.c
endif
if HAVE_TIFF
libforeign_la_SOURCES += \
tiff.h \

739
libvips/foreign/fits.c Normal file
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@ -0,0 +1,739 @@
/* Read FITS files with cfitsio
*
* 26/10/10
* - from matlab.c
* 27/10/10
* - oops, forgot to init status in close
* 30/11/10
* - set RGB16/GREY16 if appropriate
* - allow up to 10 dimensions as long as they are empty
* 27/1/11
* - lazy read
* 31/1/11
* - read in planes and combine with im_bandjoin()
* - read whole tiles with fits_read_subset() when we can
* 17/3/11
* - renames, updates etc. ready for adding fits write
* - fits write!
* 21/3/11
* - read/write metadata as whole records to avoid changing things
* - cast input to a supported format
* - bandsplit for write
* 13/12/11
* - redo as a set of fns ready for wrapping in a new-style class
*/
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
/*
#define VIPS_DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <vips/vips.h>
#include <vips/internal.h>
#include <vips/debug.h>
#include <fitsio.h>
#include "fits.h"
/*
TODO
- ask Doug for a test colour image
found WFPC2u5780205r_c0fx.fits on the fits samples page,
but it's tiny
- test performance
- vips__fits_read() makes rather ugly bandjoins, fix
*/
/* vips only supports 3 dimensions, but we allow up to MAX_DIMENSIONS as long
* as the higher dimensions are all empty. If you change this value, change
* fits2vips_get_header() as well.
*/
#define MAX_DIMENSIONS (10)
/* What we track during a cfitsio-file read or write.
*/
typedef struct {
char *filename;
VipsImage *image;
fitsfile *fptr;
int datatype;
int naxis;
long long int naxes[MAX_DIMENSIONS];
GMutex *lock; /* Lock fits_*() calls with this */
/* Set this to -1 to read all bands, or a +ve int to read a specific
* band.
*/
int band_select;
/* We split bands up for write into this buffer.
*/
PEL *buffer;
} VipsFits;
const char *vips__fits_suffs[] = { ".fits", NULL };
static void
vips_fits_error( int status )
{
char buf[80];
fits_get_errstatus( status, buf );
vips_error( "fits", "%s", buf );
}
/* Shut down. Can be called many times.
*/
static void
vips_fits_close( VipsFits *fits )
{
VIPS_FREE( fits->filename );
VIPS_FREEF( g_mutex_free, fits->lock );
if( fits->fptr ) {
int status;
status = 0;
if( fits_close_file( fits->fptr, &status ) )
vips_fits_error( status );
fits->fptr = NULL;
}
VIPS_FREE( fits->buffer );
}
static void
vips_fits_close_cb( VipsImage *image, VipsFits *fits )
{
vips_fits_close( fits );
}
static VipsFits *
vips_fits_new_read( const char *filename, VipsImage *out, int band_select )
{
VipsFits *fits;
int status;
if( !(fits = VIPS_NEW( out, VipsFits )) )
return( NULL );
fits->filename = vips_strdup( NULL, filename );
fits->image = out;
fits->fptr = NULL;
fits->lock = NULL;
fits->band_select = band_select;
fits->buffer = NULL;
g_signal_connect( out, "close",
G_CALLBACK( vips_fits_close_cb ), fits );
status = 0;
if( fits_open_file( &fits->fptr, filename, READONLY, &status ) ) {
vips_error( "fits", _( "unable to open \"%s\"" ), filename );
vips_fits_error( status );
return( NULL );
}
fits->lock = g_mutex_new();
return( fits );
}
/* fits image types -> VIPS band formats. VIPS doesn't have 64-bit int, so no
* entry for LONGLONG_IMG (64).
*/
static int fits2vips_formats[][3] = {
{ BYTE_IMG, VIPS_FORMAT_UCHAR, TBYTE },
{ SHORT_IMG, VIPS_FORMAT_USHORT, TUSHORT },
{ LONG_IMG, VIPS_FORMAT_UINT, TUINT },
{ FLOAT_IMG, VIPS_FORMAT_FLOAT, TFLOAT },
{ DOUBLE_IMG, VIPS_FORMAT_DOUBLE, TDOUBLE }
};
static int
vips_fits_get_header( VipsFits *fits, VipsImage *out )
{
int status;
int bitpix;
int width, height, bands, format, type;
int keysexist;
int i;
status = 0;
if( fits_get_img_paramll( fits->fptr,
10, &bitpix, &fits->naxis, fits->naxes, &status ) ) {
vips_fits_error( status );
return( -1 );
}
#ifdef VIPS_DEBUG
VIPS_DEBUG_MSG( "naxis = %d\n", fits->naxis );
for( i = 0; i < fits->naxis; i++ )
VIPS_DEBUG_MSG( "%d) %lld\n", i, fits->naxes[i] );
#endif /*VIPS_DEBUG*/
width = 1;
height = 1;
bands = 1;
switch( fits->naxis ) {
/* If you add more dimensions here, adjust data read below. See also
* the definition of MAX_DIMENSIONS above.
*/
case 10:
case 9:
case 8:
case 7:
case 6:
case 5:
case 4:
for( i = fits->naxis; i > 3; i-- )
if( fits->naxes[i - 1] != 1 ) {
vips_error( "fits",
"%s", _( "dimensions above 3 "
"must be size 1" ) );
return( -1 );
}
case 3:
bands = fits->naxes[2];
case 2:
height = fits->naxes[1];
case 1:
width = fits->naxes[0];
break;
default:
vips_error( "fits", _( "bad number of axis %d" ), fits->naxis );
return( -1 );
}
/* Are we in one-band mode?
*/
if( fits->band_select != -1 )
bands = 1;
/* Get image format. We want the 'raw' format of the image, our caller
* can convert using the meta info if they want.
*/
for( i = 0; i < VIPS_NUMBER( fits2vips_formats ); i++ )
if( fits2vips_formats[i][0] == bitpix )
break;
if( i == VIPS_NUMBER( fits2vips_formats ) ) {
vips_error( "fits", _( "unsupported bitpix %d\n" ),
bitpix );
return( -1 );
}
format = fits2vips_formats[i][1];
fits->datatype = fits2vips_formats[i][2];
if( bands == 1 ) {
if( format == VIPS_FORMAT_USHORT )
type = VIPS_INTERPRETATION_GREY16;
else
type = VIPS_INTERPRETATION_B_W;
}
else if( bands == 3 ) {
if( format == VIPS_FORMAT_USHORT )
type = VIPS_INTERPRETATION_RGB16;
else
type = VIPS_INTERPRETATION_RGB;
}
else
type = VIPS_INTERPRETATION_MULTIBAND;
vips_image_init_fields( out,
width, height, bands,
format,
VIPS_CODING_NONE, type, 1.0, 1.0 );
vips_demand_hint( out, VIPS_DEMAND_STYLE_SMALLTILE, NULL );
/* Read all keys into meta.
*/
if( fits_get_hdrspace( fits->fptr, &keysexist, NULL, &status ) ) {
vips_fits_error( status );
return( -1 );
}
for( i = 0; i < keysexist; i++ ) {
char record[81];
char vipsname[100];
if( fits_read_record( fits->fptr, i + 1, record, &status ) ) {
vips_fits_error( status );
return( -1 );
}
VIPS_DEBUG_MSG( "fits2vips: setting meta on vips image:\n" );
VIPS_DEBUG_MSG( " record == \"%s\"\n", record );
/* FITS lets keys repeat. For example, HISTORY appears many
* times, each time with a fresh line of history attached. We
* have to include the key index in the vips name we assign.
*/
vips_snprintf( vipsname, 100, "fits-%d", i );
vips_image_set_string( out, vipsname, record );
}
return( 0 );
}
int
vips__fits_read_header( const char *filename, VipsImage *out )
{
VipsFits *fits;
VIPS_DEBUG_MSG( "fits2vips_header: reading \"%s\"\n", filename );
if( !(fits = vips_fits_new_read( filename, out, -1 )) ||
vips_fits_get_header( fits, out ) )
return( -1 );
return( 0 );
}
static int
fits2vips_generate( VipsRegion *out,
void *seq, void *a, void *b, gboolean *stop )
{
VipsFits *fits = (VipsFits *) a;
Rect *r = &out->valid;
PEL *q;
int z;
int status;
long fpixel[MAX_DIMENSIONS];
long lpixel[MAX_DIMENSIONS];
long inc[MAX_DIMENSIONS];
status = 0;
VIPS_DEBUG_MSG( "fits2vips_generate: "
"generating left = %d, top = %d, width = %d, height = %d\n",
r->left, r->top, r->width, r->height );
/* Special case: the region we are writing to is exactly the width we
* need, ie. we can read a rectangular area into it.
*/
if( VIPS_REGION_LSKIP( out ) == VIPS_REGION_SIZEOF_LINE( out ) ) {
VIPS_DEBUG_MSG( "fits2vips_generate: block read\n" );
for( z = 0; z < MAX_DIMENSIONS; z++ )
fpixel[z] = 1;
fpixel[0] = r->left + 1;
fpixel[1] = r->top + 1;
fpixel[2] = fits->band_select + 1;
for( z = 0; z < MAX_DIMENSIONS; z++ )
lpixel[z] = 1;
lpixel[0] = VIPS_RECT_RIGHT( r );
lpixel[1] = VIPS_RECT_BOTTOM( r );
lpixel[2] = fits->band_select + 1;
for( z = 0; z < MAX_DIMENSIONS; z++ )
inc[z] = 1;
q = (PEL *) VIPS_REGION_ADDR( out, r->left, r->top );
/* Break on ffgsv() for this call.
*/
g_mutex_lock( fits->lock );
if( fits_read_subset( fits->fptr, fits->datatype,
fpixel, lpixel, inc,
NULL, q, NULL, &status ) ) {
vips_fits_error( status );
g_mutex_unlock( fits->lock );
return( -1 );
}
g_mutex_unlock( fits->lock );
}
else {
int y;
for( y = r->top; y < VIPS_RECT_BOTTOM( r ); y ++ ) {
for( z = 0; z < MAX_DIMENSIONS; z++ )
fpixel[z] = 1;
fpixel[0] = r->left + 1;
fpixel[1] = y + 1;
fpixel[2] = fits->band_select + 1;
for( z = 0; z < MAX_DIMENSIONS; z++ )
lpixel[z] = 1;
lpixel[0] = VIPS_RECT_RIGHT( r );
lpixel[1] = y + 1;
lpixel[2] = fits->band_select + 1;
for( z = 0; z < MAX_DIMENSIONS; z++ )
inc[z] = 1;
q = (PEL *) VIPS_REGION_ADDR( out, r->left, y );
/* Break on ffgsv() for this call.
*/
g_mutex_lock( fits->lock );
if( fits_read_subset( fits->fptr, fits->datatype,
fpixel, lpixel, inc,
NULL, q, NULL, &status ) ) {
vips_fits_error( status );
g_mutex_unlock( fits->lock );
return( -1 );
}
g_mutex_unlock( fits->lock );
}
}
return( 0 );
}
static int
fits2vips( const char *filename, VipsImage *out, int band_select )
{
VipsFits *fits;
/* The -1 mode is just for reading the header.
*/
g_assert( band_select >= 0 );
if( !(fits = vips_fits_new_read( filename, out, band_select )) )
return( -1 );
if( vips_fits_get_header( fits, out ) ||
vips_image_generate( out,
NULL, fits2vips_generate, NULL, fits, NULL ) ) {
vips_fits_close( fits );
return( -1 );
}
/* Don't vips_fits_close(), we need it to stick around for the
* generate.
*/
return( 0 );
}
int
vips__fits_read( const char *filename, VipsImage *out )
{
VipsImage *t;
int n_bands;
VIPS_DEBUG_MSG( "fits2vips: reading \"%s\"\n", filename );
/* fits is naturally a band-separated format. For single-band images
* we can just read out. For many bands we read each band out
* separately then join them.
*/
t = vips_image_new();
vips_object_local( out, t );
if( vips__fits_read_header( filename, t ) )
return( -1 );
n_bands = t->Bands;
if( n_bands == 1 ) {
t = vips_image_new();
vips_object_local( out, t );
if( fits2vips( filename, t, 0 ) )
return( -1 );
}
else {
VipsImage *acc;
int i;
acc = NULL;
for( i = 0; i < n_bands; i++ ) {
t = vips_image_new();
vips_object_local( out, t );
if( fits2vips( filename, t, i ) )
return( -1 );
if( !acc )
acc = t;
else {
if( vips_bandjoin2( acc, t, &acc, NULL ) )
return( -1 );
vips_object_local( out, acc );
}
}
t = acc;
}
if( vips_image_write( t, out ) )
return( -1 );
return( 0 );
}
int
vips__fits_isfits( const char *filename )
{
fitsfile *fptr;
int status;
VIPS_DEBUG_MSG( "isfits: testing \"%s\"\n", filename );
status = 0;
if( fits_open_image( &fptr, filename, READONLY, &status ) ) {
VIPS_DEBUG_MSG( "isfits: error reading \"%s\"\n", filename );
#ifdef VIPS_DEBUG
vips_fits_error( status );
#endif /*VIPS_DEBUG*/
return( 0 );
}
fits_close_file( fptr, &status );
return( 1 );
}
static VipsFits *
vips_fits_new_write( VipsImage *in, const char *filename )
{
VipsFits *fits;
int status;
status = 0;
if( !(fits = VIPS_NEW( in, VipsFits )) )
return( NULL );
fits->filename = vips_strdup( in, filename );
fits->image = in;
fits->fptr = NULL;
fits->lock = NULL;
fits->band_select = -1;
fits->buffer = NULL;
g_signal_connect( in, "close",
G_CALLBACK( vips_fits_close_cb ), fits );
if( !(fits->filename = vips_strdup( NULL, filename )) )
return( NULL );
/* We need to be able to hold one scanline of one band.
*/
if( !(fits->buffer = VIPS_ARRAY( NULL,
VIPS_IMAGE_SIZEOF_ELEMENT( in ) * in->Xsize, PEL )) )
return( NULL );
/* fits_create_file() will fail if there's a file of thet name, unless
* we put a "!" in front ofthe filename. This breaks conventions with
* the rest of vips, so just unlink explicitly.
*/
g_unlink( filename );
if( fits_create_file( &fits->fptr, filename, &status ) ) {
vips_error( "fits",
_( "unable to write to \"%s\"" ), filename );
vips_fits_error( status );
return( NULL );
}
fits->lock = g_mutex_new();
return( fits );
}
static void *
vips_fits_write_meta( VipsImage *image,
const char *field, GValue *value, void *a )
{
VipsFits *fits = (VipsFits *) a;
int status;
const char *value_str;
status = 0;
/* We want fields which start "fits-".
*/
if( !vips_isprefix( "fits-", field ) )
return( NULL );
/* The value should be a refstring, since we wrote it in fits2vips
* above ^^.
*/
value_str = vips_value_get_ref_string( value, NULL );
VIPS_DEBUG_MSG( "vips_fits_write_meta: setting meta on fits image:\n" );
VIPS_DEBUG_MSG( " value == \"%s\"\n", value_str );
if( fits_write_record( fits->fptr, value_str, &status ) ) {
vips_fits_error( status );
return( a );
}
return( NULL );
}
static int
vips_fits_set_header( VipsFits *fits, VipsImage *in )
{
int status;
int bitpix;
int i;
status = 0;
fits->naxis = 3;
fits->naxes[0] = in->Xsize;
fits->naxes[1] = in->Ysize;
fits->naxes[2] = in->Bands;
for( i = 0; i < VIPS_NUMBER( fits2vips_formats ); i++ )
if( fits2vips_formats[i][1] == in->BandFmt )
break;
if( i == VIPS_NUMBER( fits2vips_formats ) ) {
vips_error( "fits",
_( "unsupported BandFmt %d\n" ), in->BandFmt );
return( -1 );
}
bitpix = fits2vips_formats[i][0];
fits->datatype = fits2vips_formats[i][2];
#ifdef VIPS_DEBUG
VIPS_DEBUG_MSG( "naxis = %d\n", fits->naxis );
for( i = 0; i < fits->naxis; i++ )
VIPS_DEBUG_MSG( "%d) %lld\n", i, fits->naxes[i] );
VIPS_DEBUG_MSG( "bitpix = %d\n", bitpix );
#endif /*VIPS_DEBUG*/
if( fits_create_imgll( fits->fptr, bitpix, fits->naxis,
fits->naxes, &status ) ) {
vips_fits_error( status );
return( -1 );
}
if( vips_image_map( in,
(VipsImageMapFn) vips_fits_write_meta, fits ) )
return( -1 );
return( 0 );
}
static int
vips_fits_write( VipsRegion *region, VipsRect *area, void *a )
{
VipsFits *fits = (VipsFits *) a;
VipsImage *image = fits->image;
int es = VIPS_IMAGE_SIZEOF_ELEMENT( image );
int ps = VIPS_IMAGE_SIZEOF_PEL( image );
int status;
int y, b, x, k;
status = 0;
VIPS_DEBUG_MSG( "vips_fits_write: "
"writing left = %d, top = %d, width = %d, height = %d\n",
area->left, area->top, area->width, area->height );
/* We need to write a band at a time. We can't bandsplit in vips,
* since vips_sink_disc() can't loop over many images at once, sadly.
*/
for( y = 0; y < area->height; y++ ) {
PEL *p = (PEL *) VIPS_REGION_ADDR( region,
area->left, area->top + y );
for( b = 0; b < image->Bands; b++ ) {
PEL *p1, *q;
long fpixel[3];
p1 = p + b * es;
q = fits->buffer;
for( x = 0; x < area->width; x++ ) {
for( k = 0; k < es; k++ )
q[k] = p1[k];
q += es;
p1 += ps;
}
fpixel[0] = area->left + 1;
fpixel[1] = area->top + y + 1;
fpixel[2] = b + 1;
/* No need to lock, write functions are single-threaded.
*/
if( fits_write_pix( fits->fptr, fits->datatype,
fpixel, area->width, fits->buffer,
&status ) ) {
vips_fits_error( status );
return( -1 );
}
}
}
return( 0 );
}
int
vips__fits_write( VipsImage *in, const char *filename )
{
VipsFits *fits;
VIPS_DEBUG_MSG( "vips2fits: writing \"%s\"\n", filename );
if( !(fits = vips_fits_new_write( in, filename )) )
return( -1 );
if( vips_fits_set_header( fits, fits->image ) ||
vips_sink_disc( fits->image, vips_fits_write, fits ) ) {
vips_fits_close( fits );
return( -1 );
}
vips_fits_close( fits );
return( 0 );
}

49
libvips/foreign/fits.h Normal file
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@ -0,0 +1,49 @@
/* defs for fits read/write
*/
/*
Copyright (C) 1991-2005 The National Gallery
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#ifndef VIPS_FITS_H
#define VIPS_FITS_H
#ifdef __cplusplus
extern "C" {
#endif /*__cplusplus*/
extern const char *vips__fits_suffs[];
int vips__fits_isfits( const char *filename );
int vips__fits_read_header( const char *filename, VipsImage *out );
int vips__fits_read( const char *filename, VipsImage *out );
int vips__fits_write( VipsImage *in, const char *filename );
#ifdef __cplusplus
}
#endif /*__cplusplus*/
#endif /*VIPS_FITS_H*/

119
libvips/foreign/fitsload.c Normal file
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@ -0,0 +1,119 @@
/* load fits from a file
*
* 5/12/11
* - from openslideload.c
*/
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
/*
#define DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <vips/vips.h>
#include <vips/buf.h>
#include <vips/internal.h>
#include "fits.h"
typedef struct _VipsForeignLoadFits {
VipsForeignLoad parent_object;
/* Filename for load.
*/
char *filename;
} VipsForeignLoadFits;
typedef VipsForeignLoadClass VipsForeignLoadFitsClass;
G_DEFINE_TYPE( VipsForeignLoadFits, vips_foreign_load_fits,
VIPS_TYPE_FOREIGN_LOAD );
static int
vips_foreign_load_fits_header( VipsForeignLoad *load )
{
VipsForeignLoadFits *fits = (VipsForeignLoadFits *) load;
if( vips__fits_read_header( fits->filename, load->out ) )
return( -1 );
return( 0 );
}
static int
vips_foreign_load_fits_load( VipsForeignLoad *load )
{
VipsForeignLoadFits *fits = (VipsForeignLoadFits *) load;
if( vips__fits_read( fits->filename, load->real ) )
return( -1 );
return( 0 );
}
static void
vips_foreign_load_fits_class_init( VipsForeignLoadFitsClass *class )
{
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
VipsObjectClass *object_class = (VipsObjectClass *) class;
VipsForeignClass *foreign_class = (VipsForeignClass *) class;
VipsForeignLoadClass *load_class = (VipsForeignLoadClass *) class;
gobject_class->set_property = vips_object_set_property;
gobject_class->get_property = vips_object_get_property;
object_class->nickname = "fitsload";
object_class->description = _( "load a FITS image" );
foreign_class->suffs = vips__fits_suffs;
load_class->is_a = vips__fits_isfits;
load_class->header = vips_foreign_load_fits_header;
load_class->load = vips_foreign_load_fits_load;
VIPS_ARG_STRING( class, "filename", 1,
_( "Filename" ),
_( "Filename to load from" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsForeignLoadFits, filename ),
NULL );
}
static void
vips_foreign_load_fits_init( VipsForeignLoadFits *fits )
{
}

130
libvips/foreign/fitssave.c Normal file
View File

@ -0,0 +1,130 @@
/* save to fits
*
* 2/12/11
* - wrap a class around the fits writer
*/
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
/*
#define DEBUG_VERBOSE
#define DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <vips/vips.h>
#include "fits.h"
typedef struct _VipsForeignSaveFits {
VipsForeignSave parent_object;
/* Filename for save.
*/
char *filename;
} VipsForeignSaveFits;
typedef VipsForeignSaveClass VipsForeignSaveFitsClass;
G_DEFINE_TYPE( VipsForeignSaveFits, vips_foreign_save_fits,
VIPS_TYPE_FOREIGN_SAVE );
static int
vips_foreign_save_fits_build( VipsObject *object )
{
VipsForeignSave *save = (VipsForeignSave *) object;
VipsForeignSaveFits *fits = (VipsForeignSaveFits *) object;
if( VIPS_OBJECT_CLASS( vips_foreign_save_fits_parent_class )->
build( object ) )
return( -1 );
if( vips__fits_write( save->ready, fits->filename ) )
return( -1 );
return( 0 );
}
/* Save a bit of typing.
*/
#define UC VIPS_FORMAT_UCHAR
#define C VIPS_FORMAT_CHAR
#define US VIPS_FORMAT_USHORT
#define S VIPS_FORMAT_SHORT
#define UI VIPS_FORMAT_UINT
#define I VIPS_FORMAT_INT
#define F VIPS_FORMAT_FLOAT
#define X VIPS_FORMAT_COMPLEX
#define D VIPS_FORMAT_DOUBLE
#define DX VIPS_FORMAT_DPCOMPLEX
static int bandfmt_fits[10] = {
/* UC C US S UI I F X D DX */
UC, UC, US, US, UI, UI, F, X, D, DX
};
static void
vips_foreign_save_fits_class_init( VipsForeignSaveFitsClass *class )
{
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
VipsObjectClass *object_class = (VipsObjectClass *) class;
VipsForeignClass *foreign_class = (VipsForeignClass *) class;
VipsForeignSaveClass *save_class = (VipsForeignSaveClass *) class;
gobject_class->set_property = vips_object_set_property;
gobject_class->get_property = vips_object_get_property;
object_class->nickname = "fitssave";
object_class->description = _( "save image to fits file" );
object_class->build = vips_foreign_save_fits_build;
foreign_class->suffs = vips__fits_suffs;
save_class->saveable = VIPS_SAVEABLE_ANY;
save_class->format_table = bandfmt_fits;
VIPS_ARG_STRING( class, "filename", 1,
_( "Filename" ),
_( "Filename to save to" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsForeignSaveFits, filename ),
NULL );
}
static void
vips_foreign_save_fits_init( VipsForeignSaveFits *fits )
{
}

57
libvips/foreign/foreign.c
View File

@ -1154,6 +1154,8 @@ vips_foreign_write_options( VipsImage *in, const char *filename )
void
vips_foreign_operation_init( void )
{
extern GType vips_foreign_load_fits_get_type( void );
extern GType vips_foreign_save_fits_get_type( void );
extern GType vips_foreign_load_openexr_get_type( void );
extern GType vips_foreign_load_openslide_get_type( void );
extern GType vips_foreign_load_jpeg_file_get_type( void );
@ -1183,6 +1185,11 @@ vips_foreign_operation_init( void )
vips_foreign_load_openslide_get_type();
#endif /*HAVE_OPENSLIDE*/
#ifdef HAVE_CFITSIO
vips_foreign_load_fits_get_type();
vips_foreign_save_fits_get_type();
#endif /*HAVE_CFITSIO*/
#ifdef HAVE_OPENEXR
vips_foreign_load_openexr_get_type();
#endif /*HAVE_OPENEXR*/
@ -1600,3 +1607,53 @@ vips_openslideload( const char *filename, VipsImage **out, ... )
return( result );
}
/**
* vips_fitsload:
* @filename: file to load
* @out: decompressed image
* @...: %NULL-terminated list of optional named arguments
*
* Read a FITS image file into a VIPS image.
*
* See also: vips_image_new_from_file().
*
* Returns: 0 on success, -1 on error.
*/
int
vips_fitsload( const char *filename, VipsImage **out, ... )
{
va_list ap;
int result;
va_start( ap, out );
result = vips_call_split( "fitsload", ap, filename, out );
va_end( ap );
return( result );
}
/**
* vips_fitssave:
* @in: image to save
* @filename: file to write to
* @...: %NULL-terminated list of optional named arguments
*
* Write a VIPS image to a file as FITS.
*
* See also: vips_image_write_file().
*
* Returns: 0 on success, -1 on error.
*/
int
vips_fitssave( VipsImage *in, const char *filename, ... )
{
va_list ap;
int result;
va_start( ap, filename );
result = vips_call_split( "fitssave", ap, in, filename );
va_end( ap );
return( result );
}

773
libvips/format/fits.c
View File

@ -1,24 +1,7 @@
/* Read FITS files with cfitsio
*
* 26/10/10
* - from matlab.c
* 27/10/10
* - oops, forgot to init status in close
* 30/11/10
* - set RGB16/GREY16 if appropriate
* - allow up to 10 dimensions as long as they are empty
* 27/1/11
* - lazy read
* 31/1/11
* - read in planes and combine with im_bandjoin()
* - read whole tiles with fits_read_subset() when we can
* 17/3/11
* - renames, updates etc. ready for adding fits write
* - fits write!
* 21/3/11
* - read/write metadata as whole records to avoid changing things
* - cast input to a supported format
* - bandsplit for write
* 13/12/11
* - just a compat stub now
*/
/*
@ -47,32 +30,11 @@
*/
/*
#define VIPS_DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#ifndef HAVE_CFITSIO
#include <vips/vips.h>
/* We call this from format_dispatch.c so we need a stub.
*/
int
im_fits2vips( const char *filename, VipsImage *out )
{
im_error( "im_fits2vips", "%s",
_( "FITS support disabled" ) );
return( -1 );
}
#else /*HAVE_CFITSIO*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -81,741 +43,37 @@ im_fits2vips( const char *filename, VipsImage *out )
#include <vips/internal.h>
#include <vips/debug.h>
#include <fitsio.h>
/*
TODO
- ask Doug for a test colour image
found WFPC2u5780205r_c0fx.fits on the fits samples page,
but it's tiny
- test performance
*/
/* vips only supports 3 dimensions, but we allow up to MAX_DIMENSIONS as long
* as the higher dimensions are all empty. If you change this value, change
* fits2vips_get_header() as well.
*/
#define MAX_DIMENSIONS (10)
/* What we track during a cfitsio-file read or write.
*/
typedef struct {
char *filename;
VipsImage *image;
fitsfile *fptr;
int datatype;
int naxis;
long long int naxes[MAX_DIMENSIONS];
GMutex *lock; /* Lock fits_*() calls with this */
/* Set this to -1 to read all bands, or a +ve int to read a specific
* band.
*/
int band_select;
/* We split bands up for write into this buffer.
*/
PEL *buffer;
} VipsFits;
static void
vips_fits_error( int status )
{
char buf[80];
fits_get_errstatus( status, buf );
im_error( "fits", "%s", buf );
}
/* Shut down. Can be called many times.
*/
static void
vips_fits_close( VipsFits *fits )
{
VIPS_FREE( fits->filename );
VIPS_FREEF( g_mutex_free, fits->lock );
if( fits->fptr ) {
int status;
status = 0;
if( fits_close_file( fits->fptr, &status ) )
vips_fits_error( status );
fits->fptr = NULL;
}
VIPS_FREE( fits->buffer );
}
static void
vips_fits_close_cb( VipsImage *image, VipsFits *fits )
{
vips_fits_close( fits );
}
static VipsFits *
vips_fits_new_read( const char *filename, VipsImage *out, int band_select )
{
VipsFits *fits;
int status;
if( !(fits = VIPS_NEW( out, VipsFits )) )
return( NULL );
fits->filename = im_strdup( NULL, filename );
fits->image = out;
fits->fptr = NULL;
fits->lock = NULL;
fits->band_select = band_select;
fits->buffer = NULL;
g_signal_connect( out, "close",
G_CALLBACK( vips_fits_close_cb ), fits );
status = 0;
if( fits_open_file( &fits->fptr, filename, READONLY, &status ) ) {
im_error( "fits", _( "unable to open \"%s\"" ), filename );
vips_fits_error( status );
return( NULL );
}
fits->lock = g_mutex_new();
return( fits );
}
/* fits image types -> VIPS band formats. VIPS doesn't have 64-bit int, so no
* entry for LONGLONG_IMG (64).
*/
static int fits2vips_formats[][3] = {
{ BYTE_IMG, VIPS_FORMAT_UCHAR, TBYTE },
{ SHORT_IMG, VIPS_FORMAT_USHORT, TUSHORT },
{ LONG_IMG, VIPS_FORMAT_UINT, TUINT },
{ FLOAT_IMG, VIPS_FORMAT_FLOAT, TFLOAT },
{ DOUBLE_IMG, VIPS_FORMAT_DOUBLE, TDOUBLE }
};
static int
vips_fits_get_header( VipsFits *fits, VipsImage *out )
{
int status;
int bitpix;
int width, height, bands, format, type;
int keysexist;
int i;
status = 0;
if( fits_get_img_paramll( fits->fptr,
10, &bitpix, &fits->naxis, fits->naxes, &status ) ) {
vips_fits_error( status );
return( -1 );
}
#ifdef VIPS_DEBUG
VIPS_DEBUG_MSG( "naxis = %d\n", fits->naxis );
for( i = 0; i < fits->naxis; i++ )
VIPS_DEBUG_MSG( "%d) %lld\n", i, fits->naxes[i] );
#endif /*VIPS_DEBUG*/
width = 1;
height = 1;
bands = 1;
switch( fits->naxis ) {
/* If you add more dimensions here, adjust data read below. See also
* the definition of MAX_DIMENSIONS above.
*/
case 10:
case 9:
case 8:
case 7:
case 6:
case 5:
case 4:
for( i = fits->naxis; i > 3; i-- )
if( fits->naxes[i - 1] != 1 ) {
im_error( "fits", "%s", _( "dimensions above 3 "
"must be size 1" ) );
return( -1 );
}
case 3:
bands = fits->naxes[2];
case 2:
height = fits->naxes[1];
case 1:
width = fits->naxes[0];
break;
default:
im_error( "fits", _( "bad number of axis %d" ), fits->naxis );
return( -1 );
}
/* Are we in one-band mode?
*/
if( fits->band_select != -1 )
bands = 1;
/* Get image format. We want the 'raw' format of the image, our caller
* can convert using the meta info if they want.
*/
for( i = 0; i < VIPS_NUMBER( fits2vips_formats ); i++ )
if( fits2vips_formats[i][0] == bitpix )
break;
if( i == VIPS_NUMBER( fits2vips_formats ) ) {
im_error( "fits", _( "unsupported bitpix %d\n" ),
bitpix );
return( -1 );
}
format = fits2vips_formats[i][1];
fits->datatype = fits2vips_formats[i][2];
if( bands == 1 ) {
if( format == VIPS_FORMAT_USHORT )
type = VIPS_INTERPRETATION_GREY16;
else
type = VIPS_INTERPRETATION_B_W;
}
else if( bands == 3 ) {
if( format == VIPS_FORMAT_USHORT )
type = VIPS_INTERPRETATION_RGB16;
else
type = VIPS_INTERPRETATION_RGB;
}
else
type = VIPS_INTERPRETATION_MULTIBAND;
im_initdesc( out,
width, height, bands,
im_bits_of_fmt( format ), format,
VIPS_CODING_NONE, type, 1.0, 1.0, 0, 0 );
/* Read all keys into meta.
*/
if( fits_get_hdrspace( fits->fptr, &keysexist, NULL, &status ) ) {
vips_fits_error( status );
return( -1 );
}
for( i = 0; i < keysexist; i++ ) {
char record[81];
char vipsname[100];
if( fits_read_record( fits->fptr, i + 1, record, &status ) ) {
vips_fits_error( status );
return( -1 );
}
VIPS_DEBUG_MSG( "fits2vips: setting meta on vips image:\n" );
VIPS_DEBUG_MSG( " record == \"%s\"\n", record );
/* FITS lets keys repeat. For example, HISTORY appears many
* times, each time with a fresh line of history attached. We
* have to include the key index in the vips name we assign.
*/
im_snprintf( vipsname, 100, "fits-%d", i );
if( im_meta_set_string( out, vipsname, record ) )
return( -1 );
}
return( 0 );
}
static int
fits2vips_header( const char *filename, VipsImage *out )
{
VipsFits *fits;
VIPS_DEBUG_MSG( "fits2vips_header: reading \"%s\"\n", filename );
if( !(fits = vips_fits_new_read( filename, out, -1 )) ||
vips_fits_get_header( fits, out ) )
return( -1 );
return( 0 );
}
static int
fits2vips_generate( VipsRegion *out, void *seq, void *a, void *b )
{
VipsFits *fits = (VipsFits *) a;
Rect *r = &out->valid;
PEL *q;
int z;
int status;
long fpixel[MAX_DIMENSIONS];
long lpixel[MAX_DIMENSIONS];
long inc[MAX_DIMENSIONS];
status = 0;
VIPS_DEBUG_MSG( "fits2vips_generate: "
"generating left = %d, top = %d, width = %d, height = %d\n",
r->left, r->top, r->width, r->height );
/* Special case: the region we are writing to is exactly the width we
* need, ie. we can read a rectangular area into it.
*/
if( VIPS_REGION_LSKIP( out ) == VIPS_REGION_SIZEOF_LINE( out ) ) {
VIPS_DEBUG_MSG( "fits2vips_generate: block read\n" );
for( z = 0; z < MAX_DIMENSIONS; z++ )
fpixel[z] = 1;
fpixel[0] = r->left + 1;
fpixel[1] = r->top + 1;
fpixel[2] = fits->band_select + 1;
for( z = 0; z < MAX_DIMENSIONS; z++ )
lpixel[z] = 1;
lpixel[0] = VIPS_RECT_RIGHT( r );
lpixel[1] = VIPS_RECT_BOTTOM( r );
lpixel[2] = fits->band_select + 1;
for( z = 0; z < MAX_DIMENSIONS; z++ )
inc[z] = 1;
q = (PEL *) VIPS_REGION_ADDR( out, r->left, r->top );
/* Break on ffgsv() for this call.
*/
g_mutex_lock( fits->lock );
if( fits_read_subset( fits->fptr, fits->datatype,
fpixel, lpixel, inc,
NULL, q, NULL, &status ) ) {
vips_fits_error( status );
g_mutex_unlock( fits->lock );
return( -1 );
}
g_mutex_unlock( fits->lock );
}
else {
int y;
for( y = r->top; y < VIPS_RECT_BOTTOM( r ); y ++ ) {
for( z = 0; z < MAX_DIMENSIONS; z++ )
fpixel[z] = 1;
fpixel[0] = r->left + 1;
fpixel[1] = y + 1;
fpixel[2] = fits->band_select + 1;
for( z = 0; z < MAX_DIMENSIONS; z++ )
lpixel[z] = 1;
lpixel[0] = VIPS_RECT_RIGHT( r );
lpixel[1] = y + 1;
lpixel[2] = fits->band_select + 1;
for( z = 0; z < MAX_DIMENSIONS; z++ )
inc[z] = 1;
q = (PEL *) VIPS_REGION_ADDR( out, r->left, y );
/* Break on ffgsv() for this call.
*/
g_mutex_lock( fits->lock );
if( fits_read_subset( fits->fptr, fits->datatype,
fpixel, lpixel, inc,
NULL, q, NULL, &status ) ) {
vips_fits_error( status );
g_mutex_unlock( fits->lock );
return( -1 );
}
g_mutex_unlock( fits->lock );
}
}
return( 0 );
}
static int
fits2vips( const char *filename, VipsImage *out, int band_select )
{
VipsFits *fits;
/* The -1 mode is just for reading the header.
*/
g_assert( band_select >= 0 );
if( !(fits = vips_fits_new_read( filename, out, band_select )) )
return( -1 );
if( vips_fits_get_header( fits, out ) ||
im_demand_hint( out, VIPS_DEMAND_STYLE_SMALLTILE, NULL ) ||
im_generate( out,
NULL, fits2vips_generate, NULL, fits, NULL ) ) {
vips_fits_close( fits );
return( -1 );
}
/* Don't vips_fits_close(), we need it to stick around for the
* generate.
*/
return( 0 );
}
/**
* im_fits2vips:
* @filename: file to load
* @out: image to write to
*
* Read a FITS image file into a VIPS image.
*
* See also: im_vips2fits(), #VipsFormat.
*
* Returns: 0 on success, -1 on error.
*/
int
im_fits2vips( const char *filename, VipsImage *out )
{
VipsImage *t;
int n_bands;
VIPS_DEBUG_MSG( "im_fits2vips: reading \"%s\"\n", filename );
/* fits is naturally a band-separated format. For single-band images,
* we can just read out. For many bands, we read each band out
* separately then join them.
*/
if( !(t = vips_image_new()) ||
vips_object_local( out, t ) ||
fits2vips_header( filename, t ) )
if( vips_fitsload( filename, &t, NULL ) )
return( -1 );
n_bands = t->Bands;
if( n_bands == 1 ) {
if( !(t = vips_image_new()) ||
vips_object_local( out, t ) ||
fits2vips( filename, t, 0 ) )
return( -1 );
}
else {
VipsImage *acc;
int i;
acc = NULL;
for( i = 0; i < n_bands; i++ ) {
if( !(t = vips_image_new()) ||
vips_object_local( out, t ) ||
fits2vips( filename, t, i ) )
return( -1 );
if( !acc )
acc = t;
else {
VipsImage *t2;
if( !(t2 = vips_image_new()) ||
vips_object_local( out, t2 ) ||
im_bandjoin( acc, t, t2 ) )
return( -1 );
acc = t2;
}
}
t = acc;
}
/* fits has inverted y.
*/
if( im_flipver( t, out ) )
if( vips_image_write( t, out ) ) {
g_object_unref( t );
return( -1 );
}
g_object_unref( t );
return( 0 );
}
static int
isfits( const char *filename )
{
fitsfile *fptr;
int status;
VIPS_DEBUG_MSG( "isfits: testing \"%s\"\n", filename );
status = 0;
if( fits_open_image( &fptr, filename, READONLY, &status ) ) {
VIPS_DEBUG_MSG( "isfits: error reading \"%s\"\n", filename );
#ifdef VIPS_DEBUG
vips_fits_error( status );
#endif /*VIPS_DEBUG*/
return( 0 );
}
fits_close_file( fptr, &status );
return( 1 );
}
/* Save a bit of typing.
*/
#define UC IM_BANDFMT_UCHAR
#define C IM_BANDFMT_CHAR
#define US IM_BANDFMT_USHORT
#define S IM_BANDFMT_SHORT
#define UI IM_BANDFMT_UINT
#define I IM_BANDFMT_INT
#define F IM_BANDFMT_FLOAT
#define X IM_BANDFMT_COMPLEX
#define D IM_BANDFMT_DOUBLE
#define DX IM_BANDFMT_DPCOMPLEX
/* Type promotion for fits write. fits only has the unsigned int types, plus
* float and double.
*/
static int vips_fits_bandfmt[10] = {
/* UC C US S UI I F X D DX */
UC, UC, US, US, UI, UI, F, X, D, DX
};
static VipsFits *
vips_fits_new_write( VipsImage *in, const char *filename )
{
VipsImage *flip;
VipsImage *type;
VipsFits *fits;
int status;
status = 0;
if( im_check_noncomplex( "im_vips2fits", in ) ||
im_check_uncoded( "im_vips2fits", in ) )
return( NULL );
/* Cast to a supported format.
*/
if( !(type = vips_image_new()) ||
vips_object_local( in, type ) ||
im_clip2fmt( in, type, vips_fits_bandfmt[in->BandFmt] ) )
return( NULL );
in = type;
/* FITS has (0,0) in the bottom left, we need to flip.
*/
if( !(flip = vips_image_new()) ||
vips_object_local( in, flip ) ||
im_flipver( in, flip ) )
return( NULL );
in = flip;
if( !(fits = VIPS_NEW( in, VipsFits )) )
return( NULL );
fits->filename = im_strdup( NULL, filename );
fits->image = in;
fits->fptr = NULL;
fits->lock = NULL;
fits->band_select = -1;
fits->buffer = NULL;
g_signal_connect( in, "close",
G_CALLBACK( vips_fits_close_cb ), fits );
if( !(fits->filename = im_strdup( NULL, filename )) )
return( NULL );
/* We need to be able to hold one scanline of one band.
*/
if( !(fits->buffer = VIPS_ARRAY( NULL,
VIPS_IMAGE_SIZEOF_ELEMENT( in ) * in->Xsize, PEL )) )
return( NULL );
/* fits_create_file() will fail if there's a file of thet name, unless
* we put a "!" in front ofthe filename. This breaks conventions with
* the rest of vips, so just unlink explicitly.
*/
g_unlink( filename );
if( fits_create_file( &fits->fptr, filename, &status ) ) {
im_error( "fits", _( "unable to write to \"%s\"" ), filename );
vips_fits_error( status );
return( NULL );
}
fits->lock = g_mutex_new();
return( fits );
}
static void *
vips_fits_write_meta( VipsImage *image,
const char *field, GValue *value, void *a )
{
VipsFits *fits = (VipsFits *) a;
int status;
const char *value_str;
status = 0;
/* We want fields which start "fits-".
*/
if( !im_isprefix( "fits-", field ) )
return( NULL );
/* The value should be a refstring, since we wrote it in fits2vips
* above ^^.
*/
value_str = im_ref_string_get( value );
VIPS_DEBUG_MSG( "vips_fits_write_meta: setting meta on fits image:\n" );
VIPS_DEBUG_MSG( " value == \"%s\"\n", value_str );
if( fits_write_record( fits->fptr, value_str, &status ) ) {
vips_fits_error( status );
return( a );
}
return( NULL );
}
static int
vips_fits_set_header( VipsFits *fits, VipsImage *in )
{
int status;
int bitpix;
int i;
status = 0;
fits->naxis = 3;
fits->naxes[0] = in->Xsize;
fits->naxes[1] = in->Ysize;
fits->naxes[2] = in->Bands;
for( i = 0; i < VIPS_NUMBER( fits2vips_formats ); i++ )
if( fits2vips_formats[i][1] == in->BandFmt )
break;
if( i == VIPS_NUMBER( fits2vips_formats ) ) {
im_error( "fits", _( "unsupported BandFmt %d\n" ),
in->BandFmt );
return( -1 );
}
bitpix = fits2vips_formats[i][0];
fits->datatype = fits2vips_formats[i][2];
#ifdef VIPS_DEBUG
VIPS_DEBUG_MSG( "naxis = %d\n", fits->naxis );
for( i = 0; i < fits->naxis; i++ )
VIPS_DEBUG_MSG( "%d) %lld\n", i, fits->naxes[i] );
VIPS_DEBUG_MSG( "bitpix = %d\n", bitpix );
#endif /*VIPS_DEBUG*/
if( fits_create_imgll( fits->fptr, bitpix, fits->naxis,
fits->naxes, &status ) ) {
vips_fits_error( status );
return( -1 );
}
if( im_header_map( in,
(im_header_map_fn) vips_fits_write_meta, fits ) )
return( -1 );
return( 0 );
}
static int
vips_fits_write( VipsRegion *region, VipsRect *area, void *a )
{
VipsFits *fits = (VipsFits *) a;
VipsImage *image = fits->image;
int es = VIPS_IMAGE_SIZEOF_ELEMENT( image );
int ps = VIPS_IMAGE_SIZEOF_PEL( image );
int status;
int y, b, x, k;
status = 0;
VIPS_DEBUG_MSG( "vips_fits_write: "
"writing left = %d, top = %d, width = %d, height = %d\n",
area->left, area->top, area->width, area->height );
/* We need to write a band at a time. We can't bandsplit in vips,
* since vips_sink_disc() can't loop over many images at once, sadly.
*/
for( y = 0; y < area->height; y++ ) {
PEL *p = (PEL *) VIPS_REGION_ADDR( region,
area->left, area->top + y );
for( b = 0; b < image->Bands; b++ ) {
PEL *p1, *q;
long fpixel[3];
p1 = p + b * es;
q = fits->buffer;
for( x = 0; x < area->width; x++ ) {
for( k = 0; k < es; k++ )
q[k] = p1[k];
q += es;
p1 += ps;
}
fpixel[0] = area->left + 1;
fpixel[1] = area->top + y + 1;
fpixel[2] = b + 1;
/* No need to lock, write functions are single-threaded.
*/
if( fits_write_pix( fits->fptr, fits->datatype,
fpixel, area->width, fits->buffer,
&status ) ) {
vips_fits_error( status );
return( -1 );
}
}
}
return( 0 );
}
/**
* im_vips2fits:
* @in: image to write
* @filename: file to write to
*
* Write @in to @filename in FITS format.
*
* See also: im_fits2vips(), #VipsFormat.
*
* Returns: 0 on success, -1 on error.
*/
int
im_vips2fits( VipsImage *in, const char *filename )
{
VipsFits *fits;
VIPS_DEBUG_MSG( "im_vips2fits: writing \"%s\"\n", filename );
if( !(fits = vips_fits_new_write( in, filename )) )
if( vips_fitssave( in, filename, NULL ) )
return( -1 );
if( vips_fits_set_header( fits, fits->image ) ||
vips_sink_disc( fits->image, vips_fits_write, fits ) ) {
vips_fits_close( fits );
return( -1 );
}
vips_fits_close( fits );
return( 0 );
}
static int
isfits( const char *name )
{
return( vips_foreign_is_a( "fitsload", name ) );
}
static const char *fits_suffs[] = { ".fits", NULL };
/* fits format adds no new members.
@ -833,7 +91,7 @@ vips_format_fits_class_init( VipsFormatFitsClass *class )
object_class->description = _( "FITS" );
format_class->is_a = isfits;
format_class->header = fits2vips_header;
format_class->header = im_fits2vips;
format_class->load = im_fits2vips;
format_class->save = im_vips2fits;
format_class->suffs = fits_suffs;
@ -846,4 +104,3 @@ vips_format_fits_init( VipsFormatFits *object )
G_DEFINE_TYPE( VipsFormatFits, vips_format_fits, VIPS_TYPE_FORMAT );
#endif /*HAVE_CFITSIO*/

5
libvips/include/vips/foreign.h
View File

@ -323,6 +323,11 @@ int vips_tiffsave( VipsImage *in, const char *filename, ... )
int vips_openexrload( const char *filename, VipsImage **out, ... )
__attribute__((sentinel));
int vips_fitsload( const char *filename, VipsImage **out, ... )
__attribute__((sentinel));
int vips_fitssave( VipsImage *in, const char *filename, ... )
__attribute__((sentinel));
#ifdef __cplusplus
}
#endif /*__cplusplus*/