basic fits write done
now sort-of works, but see notes in fits.c re. missing features
This commit is contained in:
John Cupitt
parent
5a64a02cb7
commit
9a9704bcf6
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@ -36,6 +36,8 @@
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- im_ri2c() was broken
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- added VIPS_FORMAT_BIGENDIAN format flag
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- moved IMAGE and REGION to VipsImage and VipsRegion, classes over VipsObject
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- Rect -> VipsRect
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- libpng-1.5 supported
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30/11/10 started 7.24.0
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- bump for new stable
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13
TODO
13
TODO
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@ -1,4 +1,17 @@
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- FITS repeats keys in the file, eg. there are many HISTORY keys, each has a
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line of history attached
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I suppose these need to become eg. "fits-HISTORY-12" etc.?
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or perhaps all fits fields should be "fits-nnn-name"?
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- vips_attach_save() in image.c has problems if save fails ... there's no way
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for the result of the "written" callback to propogate the error
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_written() should take a &status argument?
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- add FITS and MATLAB write
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@ -14,6 +14,7 @@
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* - read whole tiles with fits_read_subset() when we can
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* 17/3/11
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* - renames, updates etc. ready for adding fits write
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* - fits write!
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*/
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/*
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@ -43,8 +44,8 @@
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*/
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/*
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#define VIPS_DEBUG
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*/
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#define VIPS_DEBUG
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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@ -79,6 +80,23 @@
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- test performance
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- quoting problem with keys, eg. try:
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vips im_copy halos20.1344.fits x.v
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vips im_copy x.v x.fits
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vips im_copy x.fits x2.v
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x.v and x2.v should have (almost) identical headers, but
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they do not
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- allow more than 1 band for write
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- cast vips types up to most-enclosing fits-supported types,
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perhaps ban signed types?
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- write with an area writer rather than repeatedly writing a
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line at a time
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*/
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/* vips only supports 3 dimensions, but we allow up to MAX_DIMENSIONS as long
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@ -115,8 +133,10 @@ vips_fits_error( int status )
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im_error( "fits", "%s", buf );
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}
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/* Shut down. Can be called many times.
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*/
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static void
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vips_fits_destroy( VipsFits *fits )
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vips_fits_close( VipsFits *fits )
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{
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VIPS_FREE( fits->filename );
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VIPS_FREEF( g_mutex_free, fits->lock );
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@ -131,8 +151,6 @@ vips_fits_destroy( VipsFits *fits )
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fits->fptr = NULL;
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}
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im_free( fits );
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}
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static VipsFits *
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@ -141,7 +159,7 @@ vips_fits_new_read( const char *filename, VipsImage *out, int band_select )
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VipsFits *fits;
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int status;
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if( !(fits = VIPS_NEW( NULL, VipsFits )) )
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if( !(fits = VIPS_NEW( out, VipsFits )) )
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return( NULL );
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fits->filename = im_strdup( NULL, filename );
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@ -150,7 +168,7 @@ vips_fits_new_read( const char *filename, VipsImage *out, int band_select )
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fits->lock = NULL;
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fits->band_select = band_select;
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g_signal_connect( out, "close",
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G_CALLBACK( vips_fits_destroy ), fits );
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G_CALLBACK( vips_fits_close ), fits );
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status = 0;
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if( fits_open_file( &fits->fptr, filename, READONLY, &status ) ) {
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@ -299,10 +317,16 @@ vips_fits_get_header( VipsFits *fits, VipsImage *out )
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VIPS_DEBUG_MSG( " value == %s\n", value );
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VIPS_DEBUG_MSG( " comment == %s\n", comment );
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im_snprintf( vipsname, 100, "fits-%s", key );
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/* FITS lets keys repeat. For example, HISTORY appears many
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* times, each time with a fresh line of history attached. We
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* have to include the key index in the vips name we assign,
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* and strip it out again when we write back to FITS again.
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*/
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im_snprintf( vipsname, 100, "fits-%d-%s", i, key );
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if( im_meta_set_string( out, vipsname, value ) )
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return( -1 );
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im_snprintf( vipsname, 100, "fits-%s-comment", key );
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im_snprintf( vipsname, 100, "fits-%d-%s-comment", i, key );
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if( im_meta_set_string( out, vipsname, comment ) )
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return( -1 );
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}
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@ -426,11 +450,19 @@ fits2vips( const char *filename, VipsImage *out, int band_select )
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*/
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g_assert( band_select >= 0 );
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if( !(fits = vips_fits_new_read( filename, out, band_select )) ||
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vips_fits_get_header( fits, out ) ||
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im_demand_hint( out, VIPS_DEMAND_STYLE_SMALLTILE, NULL ) ||
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im_generate( out, NULL, fits2vips_generate, NULL, fits, NULL ) )
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if( !(fits = vips_fits_new_read( filename, out, band_select )) )
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return( -1 );
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if( vips_fits_get_header( fits, out ) ||
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im_demand_hint( out, VIPS_DEMAND_STYLE_SMALLTILE, NULL ) ||
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im_generate( out,
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NULL, fits2vips_generate, NULL, fits, NULL ) ) {
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vips_fits_close( fits );
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return( -1 );
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}
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/* Don't vips_fits_close(), we need it to stcik around for the
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* generate.
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*/
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return( 0 );
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}
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@ -532,21 +564,35 @@ isfits( const char *filename )
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static VipsFits *
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vips_fits_new_write( VipsImage *in, const char *filename )
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{
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VipsImage *flip;
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VipsFits *fits;
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int status;
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if( !(fits = VIPS_NEW( NULL, VipsFits )) )
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status = 0;
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/* FITS has (0,0) in the bottom left, we need to flip.
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*/
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if( !(flip = vips_image_new( "p" )) ||
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vips_object_local( in, flip ) ||
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im_flipver( in, flip ) ||
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!(fits = VIPS_NEW( NULL, VipsFits )) )
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return( NULL );
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fits->filename = im_strdup( NULL, filename );
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fits->image = in;
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fits->image = flip;
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fits->fptr = NULL;
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fits->lock = NULL;
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fits->band_select = -1;
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g_signal_connect( in, "close",
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G_CALLBACK( vips_fits_destroy ), fits );
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G_CALLBACK( vips_fits_close ), fits );
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/* fits_create_file() will fail if there's a file of thet name, unless
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* we put a "!" in front ofthe filename. This breaks conventions with
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* the rest of vips, so just unlink explicitly.
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*/
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g_unlink( filename );
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status = 0;
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if( fits_create_file( &fits->fptr, filename, &status ) ) {
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im_error( "fits", _( "unable to write to \"%s\"" ), filename );
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vips_fits_error( status );
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@ -558,27 +604,76 @@ vips_fits_new_write( VipsImage *in, const char *filename )
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return( fits );
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}
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static void *
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vips_fits_write_meta( VipsImage *image,
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const char *field, GValue *value, void *a )
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{
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VipsFits *fits = (VipsFits *) a;
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int status;
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char cname[80];
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char *comment;
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char *p;
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const char *value_str;
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status = 0;
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/* We want fields which start "fits-" and which don't end "-comment".
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* We pull the comment fields out separately.
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*/
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if( !im_isprefix( "fits-", field ) ||
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im_ispostfix( field, "-comment" ) )
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return( NULL );
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/* Append "-comment" to get the name we stored the field comment under.
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* Default to "".
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*/
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im_snprintf( cname, 90, "%s-comment", field );
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if( im_meta_get_string( image, cname, &comment ) )
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comment = im_strdup( NULL, "" );
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/* Skip the leading "fits-" to get the base fits field name.
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*/
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field += strlen( "fits-" );
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/* Now there will be "123-" at the front, with the 123 being the
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* index. Strip this too.
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*/
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if( (p = strchr( field, '-' )) )
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field = p + 1;
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/* The value should be a refstring, since we wrote it in fits2vips
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* above ^^.
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*/
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value_str = im_ref_string_get( value );
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VIPS_DEBUG_MSG( "vips_fits_write_meta:\n" );
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VIPS_DEBUG_MSG( " key == %s\n", field );
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VIPS_DEBUG_MSG( " value == %s\n", value_str );
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VIPS_DEBUG_MSG( " comment == %s\n", comment );
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if( fits_write_key( fits->fptr,
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TSTRING, field, (void *) value_str, comment, &status ) ) {
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vips_fits_error( status );
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return( a );
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}
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return( NULL );
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}
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static int
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vips_fits_set_header( VipsFits *fits, VipsImage *in )
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{
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int status;
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int bitpix;
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long int naxes[MAX_DIMENSIONS];
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/*
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int width, height, bands, format, type;
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int keysexist;
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int morekeys;
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*/
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int i;
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status = 0;
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fits->naxis = 3;
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fits->naxes[2] = naxes[2] = in->Bands;
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fits->naxes[1] = naxes[1] = in->Ysize;
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fits->naxes[0] = naxes[0] = in->Xsize;
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fits->naxes[0] = in->Xsize;
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fits->naxes[1] = in->Ysize;
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fits->naxes[2] = in->Bands;
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for( i = 0; i < VIPS_NUMBER( fits2vips_formats ); i++ )
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if( fits2vips_formats[i][1] == in->BandFmt )
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@ -598,50 +693,45 @@ vips_fits_set_header( VipsFits *fits, VipsImage *in )
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VIPS_DEBUG_MSG( "bitpix = %d\n", bitpix );
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#endif /*VIPS_DEBUG*/
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if( fits_create_img( fits->fptr, bitpix, fits->naxis,
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naxes, &status ) ) {
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if( fits_create_imgll( fits->fptr, bitpix, fits->naxis,
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fits->naxes, &status ) ) {
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vips_fits_error( status );
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return( -1 );
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}
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/* Read all keys into meta.
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if( fits_get_hdrspace( fits->fptr, &keysexist, &morekeys, &status ) ) {
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vips_fits_error( status );
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if( im_header_map( in,
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(im_header_map_fn) vips_fits_write_meta, fits ) )
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return( -1 );
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}
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for( i = 0; i < keysexist; i++ ) {
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char key[81];
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char value[81];
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char comment[81];
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char vipsname[100];
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if( fits_read_keyn( fits->fptr, i + 1,
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key, value, comment, &status ) ) {
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vips_fits_error( status );
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return( -1 );
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}
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VIPS_DEBUG_MSG( "fits: seen:\n" );
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VIPS_DEBUG_MSG( " key == %s\n", key );
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VIPS_DEBUG_MSG( " value == %s\n", value );
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VIPS_DEBUG_MSG( " comment == %s\n", comment );
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im_snprintf( vipsname, 100, "fits-%s", key );
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if( im_meta_set_string( out, vipsname, value ) )
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return( -1 );
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im_snprintf( vipsname, 100, "fits-%s-comment", key );
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if( im_meta_set_string( out, vipsname, comment ) )
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return( -1 );
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}
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*/
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return( 0 );
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}
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static int
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vips_fits_write( VipsFits *fits, VipsImage *in )
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vips_fits_write( VipsRegion *region, VipsRect *area, void *a )
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{
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VipsFits *fits = (VipsFits *) a;
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int status;
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int y;
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status = 0;
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for( y = 0; y < area->height; y++ ) {
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long long int fpixel[3];
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fpixel[0] = 1;
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fpixel[1] = area->top + y + 1;
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fpixel[2] = 1;
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if( fits_write_pixll( fits->fptr, fits->datatype, fpixel,
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VIPS_REGION_N_ELEMENTS( region ),
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VIPS_REGION_ADDR( region, 0, area->top + y ),
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&status ) ) {
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vips_fits_error( status );
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return( -1 );
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}
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}
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return( 0 );
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}
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@ -663,10 +753,14 @@ im_vips2fits( VipsImage *in, const char *filename )
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VIPS_DEBUG_MSG( "im_vips2fits: writing \"%s\"\n", filename );
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if( !(fits = vips_fits_new_write( in, filename )) ||
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vips_fits_set_header( fits, in ) ||
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vips_fits_write( fits, in ) )
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if( !(fits = vips_fits_new_write( in, filename )) )
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return( -1 );
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if( vips_fits_set_header( fits, fits->image ) ||
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vips_sink_disc( fits->image, vips_fits_write, fits ) ) {
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vips_fits_close( fits );
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return( -1 );
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}
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vips_fits_close( fits );
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return( 0 );
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}
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@ -199,8 +199,9 @@ im_header_double( IMAGE *im, const char *field, double *out )
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* @out: return field value
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*
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* Gets @out from @im under the name @field.
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* This function searches for
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* string-valued fields.
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* This function searches for string-valued fields.
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*
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* Do not free @out.
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*
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* See also: im_header_get(), im_header_get_typeof()
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*
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@ -768,13 +768,13 @@ typedef struct {
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/* From "written" callback: invoke a delayed save.
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*/
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static int
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static void
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vips_image_save_cb( VipsImage *image, SaveBlock *sb )
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{
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/* FIXME ... what can we do with this error return?
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*/
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if( sb->save_fn( image, sb->filename ) )
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return( -1 );
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return( 0 );
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;
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}
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static void
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@ -1699,7 +1699,7 @@ vips_image_new_temp_cb( VipsImage *image )
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{
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g_assert( image->filename );
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unlink( image->filename );
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g_unlink( image->filename );
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}
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/**
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@ -1066,8 +1066,10 @@ im_meta_set_string( IMAGE *im, const char *field, const char *str )
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* existance
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* of a piece of metadata.
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*
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* Do not free @str.
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*
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* See also: im_meta_set_string(), im_meta_get(), im_meta_get_typeof(),
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* im_ref_string
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* im_ref_string.
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*
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* Returns: 0 on success, -1 otherwise.
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*/
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