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block use of RGB profiles with CMYK images 

Detect and block a common error.

See https://github.com/libvips/libvips/issues/3139
This commit is contained in:
John Cupitt 2022-11-03 14:18:38 +00:00
parent 17ca29adc9
commit 3d29daf553
1 changed files with 18 additions and 8 deletions
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10
libvips/colour/icc_transform.c
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@ -589,6 +589,16 @@ vips_icc_load_profile_blob( VipsBlob *blob,
return( NULL );
}
/* Spot the common error of an RGB profile and a CMYK image.
*/
if( image &&
image->Type == VIPS_INTERPRETATION_CMYK &&
info->bands == 3 ) {
VIPS_FREEF( cmsCloseProfile, profile );
g_warning( "%s", _( "profile incompatible with image" ) );
return( NULL );
}
if( !cmsIsIntentSupported( profile, intent, direction ) ) {
VIPS_FREEF( cmsCloseProfile, profile );
g_warning( _( "profile does not support %s %s intent" ),