797 lines
17 KiB
C
797 lines
17 KiB
C
/* @(#) Transform images with little cms
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* @(#)
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*
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* 26/4/02 JC
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* 26/8/05
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* - attach profiles and intents to output images
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* - added im_icc_import_embedded() to import with an embedded profile
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* 12/5/06
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* - lock around cmsDoTransform
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* 23/1/07
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* - set RGB16 on 16-bit RGB export
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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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#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_LCMS
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#include <vips/vips.h>
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#include <vips/thread.h>
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int
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im_icc_present( void )
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{
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return( 0 );
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}
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int
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im_icc_transform( IMAGE *in, IMAGE *out,
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const char *input_profile_filename,
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const char *output_profile_filename,
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int intent )
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{
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im_error( "im_icc_transform",
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_( "lcms library not linked to this VIPS" ) );
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return( -1 );
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}
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int
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im_icc_import( IMAGE *in, IMAGE *out,
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const char *input_profile_filename, int intent )
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{
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im_error( "im_icc_import",
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_( "lmcs library not linked to this VIPS" ) );
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return( -1 );
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}
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int
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im_icc_import_embedded( IMAGE *in, IMAGE *out, int intent )
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{
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im_error( "im_icc_import",
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_( "lmcs library not linked to this VIPS" ) );
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return( -1 );
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}
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int
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im_icc_export_depth( IMAGE *in, IMAGE *out, int depth,
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const char *output_profile_filename, int intent )
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{
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im_error( "im_icc_export_depth",
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_( "lmcs library not linked to this VIPS" ) );
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return( -1 );
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}
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int
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im_icc_export( IMAGE *in, IMAGE *out,
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const char *output_profile_filename, int intent )
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{
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im_error( "im_icc_export",
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_( "lmcs library not linked to this VIPS" ) );
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return( -1 );
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}
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int
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im_icc_ac2rc( IMAGE *in, IMAGE *out, const char *profile_filename )
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{
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im_error( "im_icc_ac2rc",
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_( "lmcs library not linked to this VIPS" ) );
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return( -1 );
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}
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#else
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#include <stdio.h>
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#include <math.h>
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#include <assert.h>
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/* Has to be before VIPS to avoid nameclashes.
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*/
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#include <lcms.h>
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#include <icc34.h>
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#include <vips/vips.h>
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#include <vips/colour.h>
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#include <vips/region.h>
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#include <vips/util.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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/* Call lcms with up to this many pixels at once.
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*/
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#define PIXEL_BUFFER_SIZE (10000)
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static const char *
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decode_intent( int intent )
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{
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switch( intent ) {
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case IM_INTENT_PERCEPTUAL: return( "PERCEPTUAL" );
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case IM_INTENT_RELATIVE_COLORIMETRIC: return( "RELATIVE" );
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case IM_INTENT_SATURATION: return( "SATURATION" );
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case IM_INTENT_ABSOLUTE_COLORIMETRIC: return( "ABSOLUTE" );
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default: return( "<unknown>" );
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}
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}
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int
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im_icc_present( void )
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{
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return( 1 );
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}
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/* Global state for a transform.
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*/
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typedef struct {
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IMAGE *in;
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IMAGE *out;
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const char *input_profile_filename;
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const char *output_profile_filename;
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int intent;
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cmsHPROFILE in_profile;
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cmsHPROFILE out_profile;
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cmsHTRANSFORM trans;
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/* We need to single-thread calls to LCMS.
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*/
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GMutex *lock;
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} Icc;
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static int
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icc_destroy( Icc *icc )
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{
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IM_FREEF( cmsDeleteTransform, icc->trans );
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IM_FREEF( cmsCloseProfile, icc->in_profile );
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IM_FREEF( cmsCloseProfile, icc->out_profile );
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IM_FREEF( g_mutex_free, icc->lock );
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return( 0 );
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}
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static Icc *
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icc_new( IMAGE *in, IMAGE *out, int intent )
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{
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Icc *icc;
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/* Ask lcms not to abort on error.
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*/
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cmsErrorAction( LCMS_ERROR_IGNORE );
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if( !(icc = IM_NEW( out, Icc )) )
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return( NULL );
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icc->in = in;
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icc->out = out;
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icc->input_profile_filename = NULL;
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icc->output_profile_filename = NULL;
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icc->intent = intent;
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icc->in_profile = 0;
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icc->out_profile = 0;
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icc->trans = 0;
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icc->lock = g_mutex_new();
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if( im_add_close_callback( out,
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(im_callback_fn) icc_destroy, icc, NULL ) )
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return( NULL );
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return( icc );
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}
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static Icc *
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icc_new_file( IMAGE *in, IMAGE *out,
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const char *input_profile_filename,
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const char *output_profile_filename,
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int intent )
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{
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Icc *icc;
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if( !(icc = icc_new( in, out, intent )) )
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return( NULL );
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if( input_profile_filename ) {
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icc->input_profile_filename =
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im_strdup( out, input_profile_filename );
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if( !(icc->in_profile = cmsOpenProfileFromFile(
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input_profile_filename, "r" )) )
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im_error( "im_icc_transform",
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_( "unable to open profile \"%s\"" ),
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input_profile_filename );
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}
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if( output_profile_filename ) {
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icc->output_profile_filename =
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im_strdup( out, output_profile_filename );
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if( !(icc->out_profile = cmsOpenProfileFromFile(
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output_profile_filename, "r" )) )
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im_error( "im_icc_transform",
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_( "unable to open profile \"%s\"" ),
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output_profile_filename );
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}
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if( !output_profile_filename )
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icc->out_profile = cmsCreateLabProfile( NULL );
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if( !input_profile_filename )
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icc->in_profile = cmsCreateLabProfile( NULL );
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if( !icc->in_profile || !icc->out_profile ) {
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im_error( "im_icc_transform",
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_( "unable to create profiles" ) );
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return( NULL );
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}
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return( icc );
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}
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static Icc *
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icc_new_mem( IMAGE *in, IMAGE *out,
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void *data, int data_length,
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int intent )
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{
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Icc *icc;
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if( !(icc = icc_new( in, out, intent )) )
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return( NULL );
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if( !(icc->in_profile = cmsOpenProfileFromMem( data, data_length )) ) {
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im_error( "im_icc_transform", _( "unable to read profile" ) );
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return( NULL );
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}
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icc->out_profile = cmsCreateLabProfile( NULL );
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return( icc );
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}
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/* Pack a buffer of floats into lcms's fixed-point formats. Cut from
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* lcms-1.0.8.
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*/
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static void
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encode_lab( float *lab, WORD *fixed, int n )
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{
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int i;
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for( i = 0; i < n; i++ ) {
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float L = lab[0];
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float a = lab[1];
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float b = lab[2];
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if( L < 0 )
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L = 0;
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if( L > 100. )
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L = 100.;
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if( a < -128. )
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a = -128;
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if( a > 127.9961 )
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a = 127.9961;
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if( b < -128. )
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b = -128;
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if( b > 127.9961 )
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b = 127.9961;
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fixed[0] = L * 652.800 + 0.5;
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fixed[1] = (a + 128.0) * 256.0 + 0.5;
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fixed[2] = (b + 128.0) * 256.0 + 0.5;
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lab += 3;
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fixed += 3;
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}
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}
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static void
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decode_lab( WORD *fixed, float *lab, int n )
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{
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int i;
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for( i = 0; i < n; i++ ) {
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lab[0] = (double) fixed[0] / 652.800;
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lab[1] = ((double) fixed[1] / 256.0) - 128.0;
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lab[2] = ((double) fixed[2] / 256.0) - 128.0;
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lab += 3;
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fixed += 3;
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}
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}
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/*
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lcms calls this on error ... but only for dynamically linked
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programs :-(
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void
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cmsSignalError( int code, const char *fmt, ... )
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{
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va_list ap;
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im_error( "im_icc", "error code #%d from little cms: " );
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va_start( ap, fmt );
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im_verrormsg( fmt, ap );
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va_end( ap );
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}
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*/
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static void
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transform_buf( PEL *in, PEL *out, int n, Icc *icc )
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{
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g_mutex_lock( icc->lock );
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cmsDoTransform( icc->trans, in, out, n );
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g_mutex_unlock( icc->lock );
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}
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static int
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attach_profile( IMAGE *im, const char *filename )
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{
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char *data;
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unsigned int data_length;
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if( !(data = im__file_read_name( filename, &data_length )) )
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return( -1 );
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if( im_meta_set_blob( im, IM_META_ICC_NAME,
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(im_callback_fn) im_free, data, data_length ) ) {
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im_free( data );
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return( -1 );
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}
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return( 0 );
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}
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int
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im_icc_transform( IMAGE *in, IMAGE *out,
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const char *input_profile_filename,
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const char *output_profile_filename,
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int intent )
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{
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Icc *icc;
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DWORD in_icc_format;
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DWORD out_icc_format;
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if( in->Coding != IM_CODING_NONE ) {
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im_error( "im_icc_transform", _( "uncoded input only" ) );
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return( -1 );
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}
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if( !(icc = icc_new_file( in, out,
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input_profile_filename, output_profile_filename, intent )) )
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return( -1 );
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if( !cmsIsIntentSupported( icc->in_profile,
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intent, LCMS_USED_AS_INPUT ) )
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im_warning( "im_icc_transform: intent %d (%s) not supported by "
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"profile \"%s\"; falling back to default intent "
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"(usually PERCEPTUAL)",
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intent, decode_intent( intent ),
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input_profile_filename );
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if( !cmsIsIntentSupported( icc->out_profile,
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intent, LCMS_USED_AS_OUTPUT ) )
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im_warning( "im_icc_transform: intent %d (%s) not supported by "
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"profile \"%s\"; falling back to default intent "
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"(usually PERCEPTUAL)",
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intent, decode_intent( intent ),
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output_profile_filename );
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switch( cmsGetColorSpace( icc->in_profile ) ) {
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case icSigCmykData:
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if( in->Bands != 4 ) {
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im_error( "im_icc_transform", _( "CMYK input profile "
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"needs a 4 band input image" ) );
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return( -1 );
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}
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in_icc_format = COLORSPACE_SH( PT_CMYK ) | CHANNELS_SH( 4 );
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break;
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case icSigRgbData:
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if( in->Bands != 3 ) {
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im_error( "im_icc_transform", _( "RGB input profile "
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"needs a 3 band input image" ) );
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return( -1 );
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}
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in_icc_format = COLORSPACE_SH( PT_RGB ) | CHANNELS_SH( 3 );
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break;
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default:
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im_error( "im_icc_transform", _( "unimplemented input colour "
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"space 0x%x" ), cmsGetColorSpace( icc->in_profile ) );
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return( -1 );
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}
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/* Prepare the output image.
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*/
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if( im_cp_desc( out, in ) )
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return( -1 );
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switch( cmsGetColorSpace( icc->out_profile ) ) {
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case icSigCmykData:
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out->Type = IM_TYPE_CMYK;
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out->BandFmt = IM_BANDFMT_UCHAR;
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out->Bbits = IM_BBITS_BYTE;
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out->Bands = 4;
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out_icc_format = TYPE_CMYK_8;
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break;
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case icSigRgbData:
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out->Type = IM_TYPE_RGB;
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out->BandFmt = IM_BANDFMT_UCHAR;
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out->Bbits = IM_BBITS_BYTE;
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out->Bands = 3;
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out_icc_format = TYPE_RGB_8;
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break;
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default:
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im_error( "im_icc_transform", _( "unimplemented output colour "
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"space 0x%x" ), cmsGetColorSpace( icc->out_profile ) );
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return( -1 );
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}
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switch( in->BandFmt ) {
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case IM_BANDFMT_UCHAR:
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in_icc_format |= BYTES_SH( 1 );
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break;
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case IM_BANDFMT_USHORT:
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in_icc_format |= BYTES_SH( 2 );
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break;
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default:
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im_error( "im_icc_transform",
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_( "uchar or ushort input only" ) );
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return( -1 );
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}
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if( !(icc->trans = cmsCreateTransform( icc->in_profile, in_icc_format,
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icc->out_profile, out_icc_format, intent, 0 )) )
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return( -1 );
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/* Process!
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*/
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if( im_wrapone( in, out,
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(im_wrapone_fn) transform_buf, icc, NULL ) )
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return( -1 );
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if( attach_profile( out, output_profile_filename ) )
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return( -1 );
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return( 0 );
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}
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static void
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import_buf( PEL *in, float *out, int n, Icc *icc )
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{
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/* Buffer of encoded 16-bit pixels we write to.
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*/
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WORD encoded[3 * PIXEL_BUFFER_SIZE];
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while( n > 0 ) {
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const int chunk = IM_MIN( n, PIXEL_BUFFER_SIZE );
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g_mutex_lock( icc->lock );
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cmsDoTransform( icc->trans, in, encoded, chunk );
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g_mutex_unlock( icc->lock );
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decode_lab( encoded, out, chunk );
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in += chunk * IM_IMAGE_SIZEOF_PEL( icc->in );
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out += chunk * 3;
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n -= chunk;
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}
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}
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static int
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icc_import( IMAGE *in, IMAGE *out, Icc *icc )
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{
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DWORD icc_format;
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if( in->Coding != IM_CODING_NONE ) {
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im_error( "im_icc_import", _( "uncoded input only" ) );
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return( -1 );
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}
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if( !cmsIsIntentSupported( icc->in_profile,
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icc->intent, LCMS_USED_AS_INPUT ) )
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im_warn( "im_icc_import", _( "intent %d (%s) not supported by "
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"profile; falling back to default intent "
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"(usually PERCEPTUAL)" ),
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icc->intent, decode_intent( icc->intent ) );
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/* Prepare the output image.
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*/
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if( im_cp_desc( out, in ) )
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return( -1 );
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out->Type = IM_TYPE_LAB;
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out->BandFmt = IM_BANDFMT_FLOAT;
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out->Bbits = IM_BBITS_FLOAT;
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out->Bands = 3;
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switch( cmsGetColorSpace( icc->in_profile ) ) {
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case icSigCmykData:
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if( in->Bands != 4 ) {
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im_error( "im_icc_import", _( "CMYK profile needs a "
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"4 band input image" ) );
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return( -1 );
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}
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icc_format = COLORSPACE_SH( PT_CMYK ) | CHANNELS_SH( 4 );
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break;
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case icSigRgbData:
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if( in->Bands != 3 ) {
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im_error( "im_icc_import", _( "RGB profile needs a "
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|
"3 band input image" ) );
|
|
return( -1 );
|
|
}
|
|
icc_format = COLORSPACE_SH( PT_RGB ) | CHANNELS_SH( 3 );
|
|
break;
|
|
|
|
default:
|
|
im_error( "im_icc_import", _( "unimplemented input colour "
|
|
"space 0x%x" ), cmsGetColorSpace( icc->in_profile ) );
|
|
return( -1 );
|
|
}
|
|
|
|
switch( in->BandFmt ) {
|
|
case IM_BANDFMT_UCHAR:
|
|
icc_format |= BYTES_SH( 1 );
|
|
break;
|
|
|
|
case IM_BANDFMT_USHORT:
|
|
icc_format |= BYTES_SH( 2 );
|
|
break;
|
|
|
|
default:
|
|
im_error( "im_icc_transform",
|
|
_( "uchar or ushort input only" ) );
|
|
return( -1 );
|
|
}
|
|
|
|
if( !(icc->trans = cmsCreateTransform( icc->in_profile, icc_format,
|
|
icc->out_profile, TYPE_Lab_16, icc->intent, 0 )) )
|
|
return( -1 );
|
|
|
|
/* Process!
|
|
*/
|
|
if( im_wrapone( in, out, (im_wrapone_fn) import_buf, icc, NULL ) )
|
|
return( -1 );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
int
|
|
im_icc_import( IMAGE *in, IMAGE *out,
|
|
const char *input_profile_filename, int intent )
|
|
{
|
|
Icc *icc;
|
|
|
|
if( !(icc = icc_new_file( in, out,
|
|
input_profile_filename, NULL, intent )) ||
|
|
icc_import( in, out, icc ) )
|
|
return( -1 );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
int
|
|
im_icc_import_embedded( IMAGE *in, IMAGE *out, int intent )
|
|
{
|
|
Icc *icc;
|
|
void *data;
|
|
size_t data_length;
|
|
|
|
if( im_header_get_type( in, IM_META_ICC_NAME ) == 0 ) {
|
|
im_error( "im_icc_import_embedded",
|
|
_( "no embedded profile" ) );
|
|
return( -1 );
|
|
}
|
|
|
|
if( im_meta_get_blob( in, IM_META_ICC_NAME, &data, &data_length ) ||
|
|
!(icc = icc_new_mem( in, out, data, data_length, intent )) ||
|
|
icc_import( in, out, icc ) )
|
|
return( -1 );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
static void
|
|
export_buf( float *in, PEL *out, int n, Icc *icc )
|
|
{
|
|
/* Buffer of encoded 16-bit pixels we transform.
|
|
*/
|
|
WORD encoded[3 * PIXEL_BUFFER_SIZE];
|
|
|
|
while( n > 0 ) {
|
|
const int chunk = IM_MIN( n, PIXEL_BUFFER_SIZE );
|
|
|
|
encode_lab( in, encoded, chunk );
|
|
g_mutex_lock( icc->lock );
|
|
cmsDoTransform( icc->trans, encoded, out, chunk );
|
|
g_mutex_unlock( icc->lock );
|
|
|
|
in += chunk * 3;
|
|
out += chunk * IM_IMAGE_SIZEOF_PEL( icc->out );
|
|
n -= chunk;
|
|
}
|
|
}
|
|
|
|
int
|
|
im_icc_export_depth( IMAGE *in, IMAGE *out, int depth,
|
|
const char *output_profile_filename, int intent )
|
|
{
|
|
Icc *icc;
|
|
DWORD icc_format;
|
|
|
|
/* Do IM_CODING_LABQ too.
|
|
*/
|
|
if( in->Coding == IM_CODING_LABQ ) {
|
|
IMAGE *t1 = im_open_local( out, "im_icc_export:1", "p" );
|
|
|
|
if( !t1 || im_LabQ2Lab( in, t1 ) )
|
|
return( -1 );
|
|
|
|
in = t1;
|
|
}
|
|
|
|
/* Check input image.
|
|
*/
|
|
if( in->Bands != 3 || in->BandFmt != IM_BANDFMT_FLOAT ||
|
|
in->Coding != IM_CODING_NONE ) {
|
|
im_error( "im_icc_export",
|
|
_( "3-band uncoded Lab float only" ) );
|
|
return( -1 );
|
|
}
|
|
|
|
if( depth != 8 && depth != 16 ) {
|
|
im_error( "im_icc_export", _( "unsupported bit depth" ) );
|
|
return( -1 );
|
|
}
|
|
|
|
if( !(icc = icc_new_file( in, out,
|
|
NULL, output_profile_filename, intent )) )
|
|
return( -1 );
|
|
|
|
if( !cmsIsIntentSupported( icc->out_profile,
|
|
intent, LCMS_USED_AS_OUTPUT ) )
|
|
im_warning( "im_icc_export: intent %d (%s) not supported by "
|
|
"profile \"%s\"; falling back to default intent "
|
|
"(usually PERCEPTUAL)",
|
|
intent, decode_intent( intent ),
|
|
output_profile_filename );
|
|
|
|
/* Prepare the output image.
|
|
*/
|
|
if( im_cp_desc( out, in ) )
|
|
return( -1 );
|
|
|
|
switch( cmsGetColorSpace( icc->out_profile ) ) {
|
|
case icSigCmykData:
|
|
out->Type = IM_TYPE_CMYK;
|
|
out->BandFmt = depth == 8 ?
|
|
IM_BANDFMT_UCHAR : IM_BANDFMT_USHORT;
|
|
out->Bbits = depth == 8 ? IM_BBITS_BYTE : IM_BBITS_SHORT;
|
|
out->Bands = 4;
|
|
icc_format = depth == 8 ? TYPE_CMYK_8 : TYPE_CMYK_16;
|
|
break;
|
|
|
|
case icSigRgbData:
|
|
out->Type = depth == 8 ?
|
|
IM_TYPE_RGB : IM_TYPE_RGB16;
|
|
out->BandFmt = depth == 8 ?
|
|
IM_BANDFMT_UCHAR : IM_BANDFMT_USHORT;
|
|
out->Bbits = depth == 8 ? IM_BBITS_BYTE : IM_BBITS_SHORT;
|
|
out->Bands = 3;
|
|
icc_format = depth == 8 ? TYPE_RGB_8 : TYPE_RGB_16;
|
|
break;
|
|
|
|
default:
|
|
im_error( "im_icc_export", _( "unimplemented output colour "
|
|
"space 0x%x" ), cmsGetColorSpace( icc->out_profile ) );
|
|
return( -1 );
|
|
}
|
|
|
|
if( !(icc->trans = cmsCreateTransform( icc->in_profile, TYPE_Lab_16,
|
|
icc->out_profile, icc_format, intent, 0 )) )
|
|
return( -1 );
|
|
|
|
/* Process!
|
|
*/
|
|
if( im_wrapone( in, out, (im_wrapone_fn) export_buf, icc, NULL ) )
|
|
return( -1 );
|
|
|
|
if( attach_profile( out, output_profile_filename ) )
|
|
return( -1 );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
int
|
|
im_icc_export( IMAGE *in, IMAGE *out,
|
|
const char *output_profile_filename, int intent )
|
|
{
|
|
return( im_icc_export_depth( in, out,
|
|
8, output_profile_filename, intent ) );
|
|
}
|
|
|
|
int
|
|
im_icc_ac2rc( IMAGE *in, IMAGE *out, const char *profile_filename )
|
|
{
|
|
cmsHPROFILE profile;
|
|
cmsCIEXYZ media;
|
|
|
|
double add[3];
|
|
double mul[3];
|
|
|
|
IMAGE *t[2];
|
|
|
|
if( !(profile = cmsOpenProfileFromFile( profile_filename, "r" )) )
|
|
return( -1 );
|
|
|
|
if( !cmsTakeMediaWhitePoint( &media, profile ) ) {
|
|
im_error( "im_icc_ac2rc", _( "unable to get media "
|
|
"white point" ) );
|
|
return( -1 );
|
|
}
|
|
|
|
cmsCloseProfile( profile );
|
|
|
|
add[0] = 0.0;
|
|
add[1] = 0.0;
|
|
add[2] = 0.0;
|
|
|
|
mul[0] = IM_D50_X0 / (media.X * 100.0);
|
|
mul[1] = IM_D50_Y0 / (media.Y * 100.0);
|
|
mul[2] = IM_D50_Z0 / (media.Z * 100.0);
|
|
|
|
/* Do IM_CODING_LABQ too.
|
|
*/
|
|
if( in->Coding == IM_CODING_LABQ ) {
|
|
IMAGE *t1 = im_open_local( out, "im_icc_ac2rc-1", "p" );
|
|
|
|
if( !t1 || im_LabQ2Lab( in, t1 ) )
|
|
return( -1 );
|
|
|
|
in = t1;
|
|
}
|
|
|
|
if( im_open_local_array( out, t, 2, "im_icc_ac2rc-2", "p" ) ||
|
|
im_Lab2XYZ_temp( in, t[0], IM_D50_X0, IM_D50_Y0, IM_D50_Z0 ) ||
|
|
im_lintra_vec( 3, mul, t[0], add, t[1] ) ||
|
|
im_XYZ2Lab_temp( t[1], out, IM_D50_X0, IM_D50_Y0, IM_D50_Z0 ) )
|
|
return( -1 );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
#endif /*HAVE_LCMS*/
|