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Merge pull request #2133 from libvips/improve-detection-of-bad-profiles

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Improve detection of bad profiles
This commit is contained in:
John Cupitt 2021-04-26 09:11:55 +01:00 committed by GitHub
commit 5c9287f8d8
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2 changed files with 261 additions and 194 deletions
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450
libvips/colour/icc_transform.c
View File

@ -73,6 +73,10 @@
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
/*
#define DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
@ -83,7 +87,6 @@
#include <stdio.h>
#include <math.h>
#include <assert.h>
/* Has to be before VIPS to avoid nameclashes.
*/
@ -163,7 +166,7 @@ typedef struct _VipsIcc {
cmsUInt32Number in_icc_format;
cmsUInt32Number out_icc_format;
cmsHTRANSFORM trans;
gboolean non_standard_input_profile;
} VipsIcc;
typedef VipsColourCodeClass VipsIccClass;
@ -376,105 +379,85 @@ vips_icc_build( VipsObject *object )
return( 0 );
}
static void
vips_icc_class_init( VipsIccClass *class )
/* Get from an image.
*/
static VipsBlob *
vips_icc_get_profile_image( VipsImage *image )
{
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
VipsObjectClass *object_class = (VipsObjectClass *) class;
const void *data;
size_t size;
gobject_class->dispose = vips_icc_dispose;
gobject_class->set_property = vips_object_set_property;
gobject_class->get_property = vips_object_get_property;
if( !vips_image_get_typeof( image, VIPS_META_ICC_NAME ) )
return( NULL );
if( vips_image_get_blob( image, VIPS_META_ICC_NAME, &data, &size ) )
return( NULL );
object_class->nickname = "icc";
object_class->description = _( "transform using ICC profiles" );
object_class->build = vips_icc_build;
VIPS_ARG_ENUM( class, "intent", 6,
_( "Intent" ),
_( "Rendering intent" ),
VIPS_ARGUMENT_OPTIONAL_INPUT,
G_STRUCT_OFFSET( VipsIcc, intent ),
VIPS_TYPE_INTENT, VIPS_INTENT_RELATIVE );
VIPS_ARG_ENUM( class, "pcs", 6,
_( "PCS" ),
_( "Set Profile Connection Space" ),
VIPS_ARGUMENT_OPTIONAL_INPUT,
G_STRUCT_OFFSET( VipsIcc, pcs ),
VIPS_TYPE_PCS, VIPS_PCS_LAB );
VIPS_ARG_BOOL( class, "black_point_compensation", 7,
_( "Black point compensation" ),
_( "Enable black point compensation" ),
VIPS_ARGUMENT_OPTIONAL_INPUT,
G_STRUCT_OFFSET( VipsIcc, black_point_compensation ),
FALSE );
cmsSetLogErrorHandler( icc_error );
return( vips_blob_new( NULL, data, size ) );
}
#ifdef DEBUG
static void
vips_icc_init( VipsIcc *icc )
vips_icc_print_profile( const char *name, cmsHPROFILE profile )
{
icc->intent = VIPS_INTENT_RELATIVE;
icc->pcs = VIPS_PCS_LAB;
icc->depth = 8;
}
static const cmsInfoType info_types[] = {
cmsInfoDescription,
cmsInfoManufacturer,
cmsInfoModel,
cmsInfoCopyright
};
static const char *info_names[] = {
"description",
"manufacturer",
"model",
"copyright"
};
typedef struct _VipsIccImport {
VipsIcc parent_instance;
int i;
cmsUInt32Number n_bytes;
cmsUInt32Number n_intents;
cmsUInt32Number *intent_codes;
char **intent_descriptions;
printf( "icc profile %s: %p\n", name, profile );
for( i = 0; i < VIPS_NUMBER( info_types ); i++ ) {
if( (n_bytes = cmsGetProfileInfoASCII( profile,
info_types[i], "en", "US",
NULL, 0 )) ) {
char *buffer;
gboolean embedded;
char *input_profile_filename;
} VipsIccImport;
typedef VipsIccClass VipsIccImportClass;
G_DEFINE_TYPE( VipsIccImport, vips_icc_import, VIPS_TYPE_ICC );
static void
vips_check_intent( const char *domain,
cmsHPROFILE profile, VipsIntent intent, int direction )
{
if( profile &&
!cmsIsIntentSupported( profile, intent, direction ) )
g_warning( _( "%s: intent %d (%s) not supported by "
"%s profile; falling back to default intent" ),
domain,
intent, vips_enum_nick( VIPS_TYPE_INTENT, intent ),
direction == LCMS_USED_AS_INPUT ?
_( "input" ) : _( "output" ) );
}
static int
vips_icc_profile_needs_bands( cmsHPROFILE profile )
{
int needs_bands;
switch( cmsGetColorSpace( profile ) ) {
case cmsSigGrayData:
needs_bands = 1;
break;
case cmsSigRgbData:
case cmsSigLabData:
case cmsSigXYZData:
needs_bands = 3;
break;
case cmsSigCmykData:
needs_bands = 4;
break;
default:
needs_bands = -1;
break;
buffer = VIPS_ARRAY( NULL, n_bytes, char );
(void) cmsGetProfileInfoASCII( profile,
info_types[i], "en", "US",
buffer, n_bytes );
printf( "%s: %s\n", info_names[i], buffer );
g_free( buffer );
}
}
return( needs_bands );
printf( "profile class: %#x\n", cmsGetDeviceClass( profile ) );
printf( "PCS: %#x\n", cmsGetPCS( profile ) );
printf( "matrix shaper: %d\n", cmsIsMatrixShaper( profile ) );
printf( "version: %g\n", cmsGetProfileVersion( profile ) );
n_intents = cmsGetSupportedIntents( 0, NULL, NULL );
printf( "n_intents = %u\n", n_intents );
intent_codes = VIPS_ARRAY( NULL, n_intents, cmsUInt32Number );
intent_descriptions = VIPS_ARRAY( NULL, n_intents, char * );
(void) cmsGetSupportedIntents( n_intents,
intent_codes, intent_descriptions );
for( i = 0; i < n_intents; i++ ) {
printf( " %#x: %s, in CLUT = %d, out CLUT = %d\n",
intent_codes[i], intent_descriptions[i],
cmsIsCLUT( profile,
intent_codes[i], LCMS_USED_AS_INPUT ),
cmsIsCLUT( profile,
intent_codes[i], LCMS_USED_AS_OUTPUT ) );
}
g_free( intent_codes );
g_free( intent_descriptions );
}
#endif /*DEBUG*/
/* How many bands we expect to see from an image after preprocessing by our
* parent classes. This is a bit fragile :-(
@ -527,6 +510,34 @@ vips_image_expected_bands( VipsImage *image )
return( expected_bands );
}
static int
vips_icc_profile_needs_bands( cmsHPROFILE profile )
{
int needs_bands;
switch( cmsGetColorSpace( profile ) ) {
case cmsSigGrayData:
needs_bands = 1;
break;
case cmsSigRgbData:
case cmsSigLabData:
case cmsSigXYZData:
needs_bands = 3;
break;
case cmsSigCmykData:
needs_bands = 4;
break;
default:
needs_bands = -1;
break;
}
return( needs_bands );
}
/* What cmsColorSpaceSignature do we expect this image to be (roughly) after
* preprocessing. Again, fragile :( see the FIXME above.
*/
@ -608,26 +619,14 @@ vips_image_expected_sig( VipsImage *image )
return( expected_sig );
}
/* Get from an image.
*/
static VipsBlob *
vips_icc_get_profile_image( VipsImage *image )
{
const void *data;
size_t size;
if( !vips_image_get_typeof( image, VIPS_META_ICC_NAME ) )
return( NULL );
if( vips_image_get_blob( image, VIPS_META_ICC_NAME, &data, &size ) )
return( NULL );
return( vips_blob_new( NULL, data, size ) );
}
/* Load a profile from a blob and check compatibility.
/* Load a profile from a blob and check compatibility with image, intent and
* direction.
*
* Don't set any errors since this is used to test compatibility.
*/
static cmsHPROFILE
vips_icc_load_profile_blob( VipsBlob *blob, VipsImage *image )
vips_icc_load_profile_blob( VipsBlob *blob,
VipsImage *image, VipsIntent intent, int direction )
{
const void *data;
size_t size;
@ -639,6 +638,10 @@ vips_icc_load_profile_blob( VipsBlob *blob, VipsImage *image )
return( NULL );
}
#ifdef DEBUG
vips_icc_print_profile( "from blob", profile );
#endif /*DEBUG*/
if( image &&
vips_image_expected_bands( image ) !=
vips_icc_profile_needs_bands( profile ) ) {
@ -646,6 +649,7 @@ vips_icc_load_profile_blob( VipsBlob *blob, VipsImage *image )
g_warning( "%s", _( "profile incompatible with image" ) );
return( NULL );
}
if( image &&
vips_image_expected_sig( image ) !=
cmsGetColorSpace( profile ) ) {
@ -655,6 +659,15 @@ vips_icc_load_profile_blob( VipsBlob *blob, VipsImage *image )
return( NULL );
}
if( !cmsIsIntentSupported( profile, intent, direction ) ) {
VIPS_FREEF( cmsCloseProfile, profile );
g_warning( _( "%s profile does not support %s intent" ),
direction == LCMS_USED_AS_INPUT ?
_( "input" ) : _( "output" ),
vips_enum_nick( VIPS_TYPE_INTENT, intent ) );
return( NULL );
}
return( profile );
}
@ -663,12 +676,14 @@ vips_icc_load_profile_blob( VipsBlob *blob, VipsImage *image )
* unref the blob if it's useless.
*/
static cmsHPROFILE
vips_icc_verify_blob( VipsBlob **blob, VipsImage *image )
vips_icc_verify_blob( VipsBlob **blob,
VipsImage *image, VipsIntent intent, int direction )
{
if( *blob ) {
cmsHPROFILE profile;
if( !(profile = vips_icc_load_profile_blob( *blob, image )) ) {
if( !(profile = vips_icc_load_profile_blob( *blob,
image, intent, direction )) ) {
vips_area_unref( (VipsArea *) *blob );
*blob = NULL;
}
@ -679,54 +694,142 @@ vips_icc_verify_blob( VipsBlob **blob, VipsImage *image )
return( NULL );
}
/* Try to set the inport profile. We read the input profile like this:
*
* embedded filename action
* 0 0 image
* 1 0 image
* 0 1 file
* 1 1 image, then fall back to file
*
* If averything fails, we fall back to our built-in profiles, either
* srgb or cmyk, depending on the input image.
*
* We set attach_input_profile if we used a non-emdedded profile. The profile
* in in_blob will need to be attached to the output image in some way.
*/
static int
vips_icc_import_build( VipsObject *object )
vips_icc_set_import( VipsIcc *icc,
gboolean embedded, const char *input_profile_filename )
{
VipsObjectClass *class = VIPS_OBJECT_GET_CLASS( object );
VipsColour *colour = (VipsColour *) object;
VipsColourCode *code = (VipsColourCode *) object;
VipsIcc *icc = (VipsIcc *) object;
VipsIccImport *import = (VipsIccImport *) object;
VipsObjectClass *class = VIPS_OBJECT_GET_CLASS( icc );
VipsColourCode *code = (VipsColourCode *) icc;
gboolean used_fallback;
icc->non_standard_input_profile = FALSE;
/* We read the input profile like this:
*
* embedded filename action
* 0 0 image
* 1 0 image
* 0 1 file
* 1 1 image, then fall back to file
/* Try embedded profile.
*/
used_fallback = FALSE;
if( code->in &&
(import->embedded ||
!import->input_profile_filename) ) {
(embedded || !input_profile_filename) ) {
icc->in_blob = vips_icc_get_profile_image( code->in );
icc->in_profile =
vips_icc_verify_blob( &icc->in_blob, code->in );
icc->in_profile = vips_icc_verify_blob( &icc->in_blob,
code->in, icc->intent, LCMS_USED_AS_INPUT );
}
/* Try profile from filename.
*/
if( code->in &&
!icc->in_blob &&
import->input_profile_filename ) {
if( vips_profile_load( import->input_profile_filename,
&icc->in_blob, NULL ) )
return( -1 );
icc->in_profile =
vips_icc_verify_blob( &icc->in_blob, code->in );
used_fallback = TRUE;
input_profile_filename ) {
if(
!vips_profile_load( input_profile_filename,
&icc->in_blob, NULL ) &&
(icc->in_profile = vips_icc_verify_blob( &icc->in_blob,
code->in, icc->intent, LCMS_USED_AS_INPUT )) )
icc->non_standard_input_profile = TRUE;
}
/* Try built-in profile.
*/
if( code->in &&
!icc->in_profile ) {
const char *name = code->in->Type == VIPS_INTERPRETATION_CMYK ?
"cmyk" : "srgb";
if(
!vips_profile_load( name, &icc->in_blob, NULL ) &&
(icc->in_profile = vips_icc_verify_blob( &icc->in_blob,
code->in, icc->intent, LCMS_USED_AS_INPUT )) )
icc->non_standard_input_profile = TRUE;
}
if( !icc->in_profile ) {
vips_error( class->nickname, "%s", _( "no input profile" ) );
vips_error( class->nickname, "%s", _( "unable to load or "
"find any compatible input profile" ) );
return( -1 );
}
vips_check_intent( class->nickname,
icc->in_profile, icc->intent, LCMS_USED_AS_INPUT );
return( 0 );
}
static void
vips_icc_class_init( VipsIccClass *class )
{
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
VipsObjectClass *object_class = (VipsObjectClass *) class;
gobject_class->dispose = vips_icc_dispose;
gobject_class->set_property = vips_object_set_property;
gobject_class->get_property = vips_object_get_property;
object_class->nickname = "icc";
object_class->description = _( "transform using ICC profiles" );
object_class->build = vips_icc_build;
VIPS_ARG_ENUM( class, "intent", 6,
_( "Intent" ),
_( "Rendering intent" ),
VIPS_ARGUMENT_OPTIONAL_INPUT,
G_STRUCT_OFFSET( VipsIcc, intent ),
VIPS_TYPE_INTENT, VIPS_INTENT_RELATIVE );
VIPS_ARG_ENUM( class, "pcs", 6,
_( "PCS" ),
_( "Set Profile Connection Space" ),
VIPS_ARGUMENT_OPTIONAL_INPUT,
G_STRUCT_OFFSET( VipsIcc, pcs ),
VIPS_TYPE_PCS, VIPS_PCS_LAB );
VIPS_ARG_BOOL( class, "black_point_compensation", 7,
_( "Black point compensation" ),
_( "Enable black point compensation" ),
VIPS_ARGUMENT_OPTIONAL_INPUT,
G_STRUCT_OFFSET( VipsIcc, black_point_compensation ),
FALSE );
cmsSetLogErrorHandler( icc_error );
}
static void
vips_icc_init( VipsIcc *icc )
{
icc->intent = VIPS_INTENT_RELATIVE;
icc->pcs = VIPS_PCS_LAB;
icc->depth = 8;
}
typedef struct _VipsIccImport {
VipsIcc parent_instance;
gboolean embedded;
char *input_profile_filename;
} VipsIccImport;
typedef VipsIccClass VipsIccImportClass;
G_DEFINE_TYPE( VipsIccImport, vips_icc_import, VIPS_TYPE_ICC );
static int
vips_icc_import_build( VipsObject *object )
{
VipsColour *colour = (VipsColour *) object;
VipsIcc *icc = (VipsIcc *) object;
VipsIccImport *import = (VipsIccImport *) object;
if( vips_icc_set_import( icc,
import->embedded, import->input_profile_filename ) )
return( -1 );
if( icc->pcs == VIPS_PCS_LAB ) {
cmsCIExyY white;
@ -746,7 +849,7 @@ vips_icc_import_build( VipsObject *object )
* In the same way, we don't remove the embedded input profile on
* import.
*/
if( used_fallback &&
if( icc->non_standard_input_profile &&
icc->in_blob ) {
const void *data;
size_t size;
@ -913,16 +1016,12 @@ vips_icc_export_build( VipsObject *object )
}
if( icc->out_blob &&
!(icc->out_profile =
vips_icc_load_profile_blob( icc->out_blob, NULL )) ) {
!(icc->out_profile = vips_icc_load_profile_blob( icc->out_blob,
NULL, icc->intent, LCMS_USED_AS_OUTPUT )) ) {
vips_error( class->nickname, "%s", _( "no output profile" ) );
return( -1 );
}
if( icc->out_profile )
vips_check_intent( class->nickname,
icc->out_profile, icc->intent, LCMS_USED_AS_OUTPUT );
if( VIPS_OBJECT_CLASS( vips_icc_export_parent_class )->build( object ) )
return( -1 );
@ -1090,48 +1189,12 @@ vips_icc_transform_build( VipsObject *object )
{
VipsObjectClass *class = VIPS_OBJECT_GET_CLASS( object );
VipsColour *colour = (VipsColour *) object;
VipsColourCode *code = (VipsColourCode *) object;
VipsIcc *icc = (VipsIcc *) object;
VipsIccTransform *transform = (VipsIccTransform *) object;
/* We read the input profile like this:
*
* embedded filename action
* 0 0 image
* 1 0 image
* 0 1 file
* 1 1 image, then fall back to file
*
* see also import_build.
*/
if( code->in &&
(transform->embedded ||
!transform->input_profile_filename) ) {
icc->in_blob = vips_icc_get_profile_image( code->in );
icc->in_profile =
vips_icc_verify_blob( &icc->in_blob, code->in );
}
if( code->in &&
!icc->in_blob &&
transform->input_profile_filename ) {
if( vips_profile_load( transform->input_profile_filename,
&icc->in_blob, NULL ) )
return( -1 );
icc->in_profile =
vips_icc_verify_blob( &icc->in_blob, code->in );
}
if( !icc->in_profile ) {
vips_error( class->nickname, "%s", _( "no input profile" ) );
if( vips_icc_set_import( icc,
transform->embedded, transform->input_profile_filename ) )
return( -1 );
}
if( !icc->in_profile ) {
vips_error( class->nickname, "%s", _( "no input profile" ) );
return( -1 );
}
if( transform->output_profile_filename ) {
if( vips_profile_load( transform->output_profile_filename,
@ -1141,19 +1204,14 @@ vips_icc_transform_build( VipsObject *object )
}
if( icc->out_blob )
icc->out_profile =
vips_icc_load_profile_blob( icc->out_blob, NULL );
icc->out_profile = vips_icc_load_profile_blob( icc->out_blob,
NULL, icc->intent, LCMS_USED_AS_OUTPUT );
if( !icc->out_profile ) {
vips_error( class->nickname, "%s", _( "no output profile" ) );
return( -1 );
}
vips_check_intent( class->nickname,
icc->in_profile, icc->intent, LCMS_USED_AS_INPUT );
vips_check_intent( class->nickname,
icc->out_profile, icc->intent, LCMS_USED_AS_OUTPUT );
if( VIPS_OBJECT_CLASS( vips_icc_transform_parent_class )->
build( object ) )
return( -1 );
@ -1251,6 +1309,10 @@ vips_icc_ac2rc( VipsImage *in, VipsImage **out, const char *profile_filename )
if( !(profile = cmsOpenProfileFromFile( profile_filename, "r" )) )
return( -1 );
#ifdef DEBUG
vips_icc_print_profile( profile_filename, profile );
#endif /*DEBUG*/
if( !(media = cmsReadTag( profile, cmsSigMediaWhitePointTag )) ) {
vips_error( "vips_icc_ac2rc",
"%s", _( "unable to get media white point" ) );
@ -1310,6 +1372,10 @@ vips_icc_is_compatible_profile( VipsImage *image,
*/
return( FALSE );
#ifdef DEBUG
vips_icc_print_profile( "from memory", profile );
#endif /*DEBUG*/
if( vips_image_expected_bands( image ) !=
vips_icc_profile_needs_bands( profile ) ) {
VIPS_FREEF( cmsCloseProfile, profile );

5
libvips/colour/profile_load.c
View File

@ -88,7 +88,8 @@ vips_profile_fallback_get( const char *name, size_t *length )
return( data );
} else {
g_free( data );
g_warning( "fallback profile decompression failed" );
g_warning( "fallback profile "
"decompression failed" );
}
}
@ -182,7 +183,7 @@ vips_profile_load_init( VipsProfileLoad *load )
* case.
*
* - @name can be the name of one of the ICC profiles embedded in libvips.
* These names can be at least `"cmyk"` and `"srgb"`.
* These names can be at least `"cmyk"`, `"p3"` and `"srgb"`.
*
* - @name can be the full path to a file.
*