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better colour management for vipsthumbnail

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This commit is contained in:
John Cupitt 2010-01-14 14:00:12 +00:00
parent b8525c6d47
commit 17ef02861e
2 changed files with 35 additions and 19 deletions
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10
TODO
View File

@ -1,13 +1,3 @@
- vipsthumbnail.c should import untagged images with an sRGB profile
argh ... lcms has
LCMSAPI cmsHPROFILE LCMSEXPORT cmsCreate_sRGBProfile(void);
perhaps we should expose this in VIPS somehow?
better: get the user to supply a default input profile
- we sill have the old flood-fill code there, move to deprecated
should we have new API? we could have a single "im_floodfill" that allows

44
tools/iofuncs/vipsthumbnail.c
View File

@ -23,7 +23,8 @@ static gboolean verbose = FALSE;
static int use_disc_threshold = 1024 * 1024;
static int thumbnail_size = 128;
static char *thumbnail_format = "tn_%s.jpg";
static char *colour_profile = NULL;
static char *export_profile = NULL;
static char *import_profile = NULL;
static GOptionEntry options[] = {
{ "size", 's', 0, G_OPTION_ARG_INT, &thumbnail_size,
@ -32,8 +33,10 @@ static GOptionEntry options[] = {
N_( "set thumbnail format to S" ), "S" },
{ "disc", 'd', 0, G_OPTION_ARG_INT, &use_disc_threshold,
N_( "set disc use threshold to N" ), "N" },
{ "profile", 'p', 0, G_OPTION_ARG_STRING, &colour_profile,
{ "eprofile", 'e', 0, G_OPTION_ARG_STRING, &export_profile,
N_( "export with profile P" ), "P" },
{ "iprofile", 'i', 0, G_OPTION_ARG_STRING, &import_profile,
N_( "import untagged images with profile P" ), "P" },
{ "verbose", 'v', 0, G_OPTION_ARG_NONE, &verbose,
N_( "verbose output" ), NULL },
{ NULL }
@ -212,17 +215,40 @@ shrink_factor( IMAGE *in, IMAGE *out )
x = t[4];
}
/* Optionally transform to the target device space, provided the image
* has a profile.
/* Colour management: we can transform the image if we have an output
* profile and an input profile. The input profile can be in the
* image, or if there is no profile there, supplied by the user.
*/
if( colour_profile && im_header_get_typeof( x, IM_META_ICC_NAME ) ) {
if( im_icc_import_embedded( x, t[5],
IM_INTENT_RELATIVE_COLORIMETRIC ) ||
im_icc_export_depth( t[5], t[6],
8, colour_profile,
if( export_profile &&
(im_header_get_typeof( x, IM_META_ICC_NAME ) ||
import_profile) ) {
if( im_header_get_typeof( x, IM_META_ICC_NAME ) ) {
if( im_icc_import_embedded( x, t[5],
IM_INTENT_RELATIVE_COLORIMETRIC ) )
return( -1 );
if( verbose )
printf( "importing with embedded profile\n" );
}
else {
if( im_icc_import( x, t[5],
import_profile,
IM_INTENT_RELATIVE_COLORIMETRIC ) )
return( -1 );
if( verbose )
printf( "importing with profile %s\n",
import_profile );
}
if( im_icc_export_depth( t[5], t[6],
8, export_profile,
IM_INTENT_RELATIVE_COLORIMETRIC ) )
return( -1 );
if( verbose )
printf( "exporting with profile %s\n", export_profile );
x = t[6];
}