예제 #1
0
파일: header.c 프로젝트: alon/libvips
static void *
print_field_fn( VipsImage *image, const char *field, GValue *value, void *a )
{
	gboolean *many = (gboolean *) a;
	const char *extra;
	char *str_value;

	/* Look for known enums and decode them.
	 */
	extra = NULL;
	if( strcmp( field, "coding" ) == 0 )
		extra = vips_enum_nick( 
			VIPS_TYPE_CODING, g_value_get_int( value ) );
	else if( strcmp( field, "format" ) == 0 )
		extra = vips_enum_nick( 
			VIPS_TYPE_BAND_FORMAT, g_value_get_int( value ) );
	else if( strcmp( field, "interpretation" ) == 0 )
		extra = vips_enum_nick( 
			VIPS_TYPE_INTERPRETATION, g_value_get_int( value ) );

	if( *many ) 
		printf( "%s: ", image->filename );

	str_value = g_strdup_value_contents( value );
	printf( "%s: %s", field, str_value );
	g_free( str_value );

	if( extra )
		printf( " - %s", extra );

	printf( "\n" );

	return( NULL );
}
예제 #2
0
파일: util.c 프로젝트: ashishof77/libvips
/* We expect a certain token.
 */
const char *
vips__token_need( const char *p, VipsToken need_token, 
	char *string, int size )
{
	VipsToken token;

	if( !(p = vips__token_must( p, &token, string, size )) ) 
		return( NULL );
	if( token != need_token ) {
		vips_error( "get_token", _( "expected %s, saw %s" ), 
			vips_enum_nick( VIPS_TYPE_TOKEN, need_token ),
			vips_enum_nick( VIPS_TYPE_TOKEN, token ) );
		return( NULL );
	}

	return( p );
}
예제 #3
0
파일: error.c 프로젝트: ashishof77/libvips
/**
 * vips_check_coding:
 * @domain: the originating domain for the error message
 * @im: image to check
 * @coding: required coding
 *
 * Check that the image has the required @coding.
 * If not, set an error message
 * and return non-zero.
 *
 * See also: vips_error().
 *
 * Returns: 0 on OK, or -1 on error.
 */
int
vips_check_coding( const char *domain, VipsImage *im, VipsCoding coding )
{
	if( im->Coding != coding ) {
		vips_error( domain, _( "coding '%s' only" ), 
			vips_enum_nick( VIPS_TYPE_CODING, coding ) );
		return( -1 );
	}

	return( 0 );
}
예제 #4
0
파일: imageheader.c 프로젝트: DINKIN/nip2
static void *
imageheader_add_item( IMAGE *im, 
	const char *field, GValue *value, Imageheader *imageheader )
{
	char txt[256];
	VipsBuf buf = VIPS_BUF_STATIC( txt );
	GtkTreeIter iter;
        char *value_str;
	const char *extra;

	value_str = g_strdup_value_contents( value );
	vips_buf_appendf( &buf, "%s", value_str );

	/* Look for enums and decode them.
	 */
	extra = NULL;
	if( strcmp( field, "coding" ) == 0 )
		extra = vips_enum_nick( VIPS_TYPE_CODING, 
			g_value_get_int( value ) );
	else if( strcmp( field, "format" ) == 0 )
		extra = vips_enum_nick( VIPS_TYPE_BAND_FORMAT, 
			g_value_get_int( value ) );
	else if( strcmp( field, "interpretation" ) == 0 )
		extra = vips_enum_nick( VIPS_TYPE_INTERPRETATION, 
			g_value_get_int( value ) );
	if( extra )
		vips_buf_appendf( &buf, " - %s", extra );

	gtk_list_store_append( imageheader->store, &iter );
	gtk_list_store_set( imageheader->store, &iter,
		NAME_COLUMN, field,
		VALUE_COLUMN, vips_buf_all( &buf ),
		-1 );

	g_free( value_str );

	return( NULL );
}
예제 #5
0
/* Auto-rotate, if rotate_image is set. 
 */
static VipsImage *
thumbnail_rotate( VipsObject *process, VipsImage *im )
{
	VipsImage **t = (VipsImage **) vips_object_local_array( process, 2 );
	VipsAngle angle = vips_autorot_get_angle( im );

	if( rotate_image &&
		angle != VIPS_ANGLE_D0 ) {
		vips_info( "vipsthumbnail", "rotating by %s", 
			vips_enum_nick( VIPS_TYPE_ANGLE, angle ) ); 

		/* Need to copy to memory, we have to stay seq.
		 */
		t[0] = vips_image_new_memory();
		if( vips_image_write( im, t[0] ) ||
			vips_rot( t[0], &t[1], angle, NULL ) )
			return( NULL ); 
		im = t[1];

		vips_autorot_remove_angle( im );
	}

	return( im );
}
예제 #6
0
static int
vips_colourspace_build( VipsObject *object )
{
	VipsColourspace *colourspace = (VipsColourspace *) object; 

	int i, j;
	VipsImage *x;
	VipsImage **t = (VipsImage **) 
		vips_object_local_array( object, 1 );
	VipsImage **pipe = (VipsImage **) 
		vips_object_local_array( object, MAX_STEPS );

	VipsInterpretation interpretation;

	/* Verify that all input args have been set.
	 */
	if( VIPS_OBJECT_CLASS( vips_colourspace_parent_class )->
		build( object ) )
		return( -1 );

	x = colourspace->in;

	/* Unpack radiance-coded images. We can't use interpretation for this,
	 * since rad images can be scRGB or XYZ.
	 */
	if( x->Coding == VIPS_CODING_RAD ) {
		if( vips_rad2float( x, &t[0], NULL ) )
			return( -1 );
		x = t[0]; 
	}

	if( vips_object_argument_isset( object, "source_space" ) )
		interpretation = colourspace->source_space;
	else
		interpretation = vips_image_guess_interpretation( x );

	/* Treat RGB as sRGB. If you want some other treatment,
	 * you'll need to use the icc funcs.
	 */
	if( interpretation == VIPS_INTERPRETATION_RGB )
		interpretation = VIPS_INTERPRETATION_sRGB;

	/* No conversion necessary.
	 */
	if( interpretation == colourspace->space ) {
		g_object_set( colourspace, "out", vips_image_new(), NULL ); 

		return( vips_image_write( colourspace->in, colourspace->out ) );
	}

	for( i = 0; i < VIPS_NUMBER( vips_colour_routes ); i++ )
		if( vips_colour_routes[i].from == interpretation &&
			vips_colour_routes[i].to == colourspace->space )
			break;
	if( i == VIPS_NUMBER( vips_colour_routes ) ) {
		vips_error( "vips_colourspace", 
			_( "no known route between '%s' and '%s'" ),
			vips_enum_nick( VIPS_TYPE_INTERPRETATION, 
				interpretation ),
			vips_enum_nick( VIPS_TYPE_INTERPRETATION, 
				colourspace->space ) );
		return( -1 );
	}

	for( j = 0; vips_colour_routes[i].route[j]; j++ ) {
		if( vips_colour_routes[i].route[j]( x, &pipe[j], NULL ) ) 
			return( -1 );
		x = pipe[j];
	}

	g_object_set( colourspace, "out", vips_image_new(), NULL ); 
	if( vips_image_write( x, colourspace->out ) )
		return( -1 );

	return( 0 );
}
예제 #7
0
static VipsImage *
thumbnail_shrink( VipsObject *process, VipsImage *in, 
	VipsInterpolate *interp, VipsImage *sharpen )
{
	VipsImage **t = (VipsImage **) vips_object_local_array( process, 10 );
	VipsInterpretation interpretation = linear_processing ?
		VIPS_INTERPRETATION_XYZ : VIPS_INTERPRETATION_sRGB; 

	int shrink; 
	double residual; 
	int tile_width;
	int tile_height;
	int nlines;

	/* RAD needs special unpacking.
	 */
	if( in->Coding == VIPS_CODING_RAD ) {
		vips_info( "vipsthumbnail", "unpacking Rad to float" );

		/* rad is scrgb.
		 */
		if( vips_rad2float( in, &t[0], NULL ) )
			return( NULL );
		in = t[0];
	}

	/* In linear mode, we import right at the start. 
	 *
	 * This is only going to work for images in device space. If you have
	 * an image in PCS which also has an attached profile, strange things
	 * will happen. 
	 */
	if( linear_processing &&
		in->Coding == VIPS_CODING_NONE &&
		(in->BandFmt == VIPS_FORMAT_UCHAR ||
		 in->BandFmt == VIPS_FORMAT_USHORT) &&
		(vips_image_get_typeof( in, VIPS_META_ICC_NAME ) || 
		 import_profile) ) {
		if( vips_image_get_typeof( in, VIPS_META_ICC_NAME ) )
			vips_info( "vipsthumbnail", 
				"importing with embedded profile" );
		else
			vips_info( "vipsthumbnail", 
				"importing with profile %s", import_profile );

		if( vips_icc_import( in, &t[1], 
			"input_profile", import_profile,
			"embedded", TRUE,
			"pcs", VIPS_PCS_XYZ,
			NULL ) )  
			return( NULL );

		in = t[1];
	}

	/* To the processing colourspace. This will unpack LABQ as well.
	 */
	vips_info( "vipsthumbnail", "converting to processing space %s",
		vips_enum_nick( VIPS_TYPE_INTERPRETATION, interpretation ) ); 
	if( vips_colourspace( in, &t[2], interpretation, NULL ) ) 
		return( NULL ); 
	in = t[2];

	shrink = calculate_shrink( in, &residual );

	vips_info( "vipsthumbnail", "integer shrink by %d", shrink );

	if( vips_shrink( in, &t[3], shrink, shrink, NULL ) ) 
		return( NULL );
	in = t[3];

	/* We want to make sure we read the image sequentially.
	 * However, the convolution we may be doing later will force us 
	 * into SMALLTILE or maybe FATSTRIP mode and that will break
	 * sequentiality.
	 *
	 * So ... read into a cache where tiles are scanlines, and make sure
	 * we keep enough scanlines to be able to serve a line of tiles.
	 *
	 * We use a threaded tilecache to avoid a deadlock: suppose thread1,
	 * evaluating the top block of the output, is delayed, and thread2, 
	 * evaluating the second block, gets here first (this can happen on 
	 * a heavily-loaded system). 
	 *
	 * With an unthreaded tilecache (as we had before), thread2 will get
	 * the cache lock and start evaling the second block of the shrink. 
	 * When it reaches the png reader it will stall until the first block 
	 * has been used ... but it never will, since thread1 will block on 
	 * this cache lock. 
	 */
	vips_get_tile_size( in, 
		&tile_width, &tile_height, &nlines );
	if( vips_tilecache( in, &t[4], 
		"tile_width", in->Xsize,
		"tile_height", 10,
		"max_tiles", (nlines * 2) / 10,
		"access", VIPS_ACCESS_SEQUENTIAL,
		"threaded", TRUE, 
		NULL ) ||
		vips_affine( t[4], &t[5], residual, 0, 0, residual, 
			"interpolate", interp,
			NULL ) )  
		return( NULL );
	in = t[5];

	vips_info( "vipsthumbnail", "residual scale by %g", residual );
	vips_info( "vipsthumbnail", "%s interpolation", 
		VIPS_OBJECT_GET_CLASS( interp )->nickname );

	/* Colour management.
	 *
	 * In linear mode, just export. In device space mode, do a combined
	 * import/export to transform to the target space.
	 */
	if( linear_processing ) {
		if( export_profile ||
			vips_image_get_typeof( in, VIPS_META_ICC_NAME ) ) {
			vips_info( "vipsthumbnail", 
				"exporting to device space with a profile" );
			if( vips_icc_export( in, &t[7], 
				"output_profile", export_profile,
				NULL ) )  
				return( NULL );
			in = t[7];
		}
		else {
			vips_info( "vipsthumbnail", "converting to sRGB" );
			if( vips_colourspace( in, &t[6], 
				VIPS_INTERPRETATION_sRGB, NULL ) ) 
				return( NULL ); 
			in = t[6];
		}
	}
	else if( export_profile &&
		(vips_image_get_typeof( in, VIPS_META_ICC_NAME ) || 
		 import_profile) ) {
		if( vips_image_get_typeof( in, VIPS_META_ICC_NAME ) )
			vips_info( "vipsthumbnail", 
				"importing with embedded profile" );
		else
			vips_info( "vipsthumbnail", 
				"importing with profile %s", import_profile );

		vips_info( "vipsthumbnail", 
			"exporting with profile %s", export_profile );

		if( vips_icc_transform( in, &t[6], export_profile,
			"input_profile", import_profile,
			"embedded", TRUE,
			NULL ) )  
			return( NULL );

		in = t[6];
	}

	/* If we are upsampling, don't sharpen, since nearest looks dumb
	 * sharpened.
	 */
	if( shrink >= 1 && 
		residual <= 1.0 && 
		sharpen ) { 
		vips_info( "vipsthumbnail", "sharpening thumbnail" );
		if( vips_conv( in, &t[8], sharpen, NULL ) ) 
			return( NULL );
		in = t[8];
	}

	if( delete_profile &&
		vips_image_get_typeof( in, VIPS_META_ICC_NAME ) ) {
		vips_info( "vipsthumbnail", 
			"deleting profile from output image" );
		if( !vips_image_remove( in, VIPS_META_ICC_NAME ) ) 
			return( NULL );
	}

	return( in );
}
예제 #8
0
static VipsImage *
thumbnail_shrink( VipsObject *process, VipsImage *in )
{
	VipsImage **t = (VipsImage **) vips_object_local_array( process, 10 );
	VipsInterpretation interpretation = linear_processing ?
		VIPS_INTERPRETATION_XYZ : VIPS_INTERPRETATION_sRGB; 

	/* TRUE if we've done the import of an ICC transform and still need to
	 * export.
	 */
	gboolean have_imported;

	/* TRUE if we've premultiplied and need to unpremultiply.
	 */
	gboolean have_premultiplied;
	VipsBandFormat unpremultiplied_format;

	/* Sniff the incoming image and try to guess what the alpha max is.
	 */
	double max_alpha;

	double shrink; 

	/* RAD needs special unpacking.
	 */
	if( in->Coding == VIPS_CODING_RAD ) {
		vips_info( "vipsthumbnail", "unpacking Rad to float" );

		/* rad is scrgb.
		 */
		if( vips_rad2float( in, &t[0], NULL ) )
			return( NULL );
		in = t[0];
	}

	/* Try to guess what the maximum alpha might be.
	 */
	max_alpha = 255;
	if( in->BandFmt == VIPS_FORMAT_USHORT )
		max_alpha = 65535;

	/* In linear mode, we import right at the start. 
	 *
	 * We also have to import the whole image if it's CMYK, since
	 * vips_colourspace() (see below) doesn't know about CMYK.
	 *
	 * This is only going to work for images in device space. If you have
	 * an image in PCS which also has an attached profile, strange things
	 * will happen. 
	 */
	have_imported = FALSE;
	if( (linear_processing ||
		in->Type == VIPS_INTERPRETATION_CMYK) &&
		in->Coding == VIPS_CODING_NONE &&
		(in->BandFmt == VIPS_FORMAT_UCHAR ||
		 in->BandFmt == VIPS_FORMAT_USHORT) &&
		(vips_image_get_typeof( in, VIPS_META_ICC_NAME ) || 
		 import_profile) ) {
		if( vips_image_get_typeof( in, VIPS_META_ICC_NAME ) )
			vips_info( "vipsthumbnail", 
				"importing with embedded profile" );
		else
			vips_info( "vipsthumbnail", 
				"importing with profile %s", import_profile );

		if( vips_icc_import( in, &t[1], 
			"input_profile", import_profile,
			"embedded", TRUE,
			"pcs", VIPS_PCS_XYZ,
			NULL ) )  
			return( NULL );

		in = t[1];

		have_imported = TRUE;
	}

	/* To the processing colourspace. This will unpack LABQ as well.
	 */
	vips_info( "vipsthumbnail", "converting to processing space %s",
		vips_enum_nick( VIPS_TYPE_INTERPRETATION, interpretation ) ); 
	if( vips_colourspace( in, &t[2], interpretation, NULL ) ) 
		return( NULL ); 
	in = t[2];

	/* If there's an alpha, we have to premultiply before shrinking. See
	 * https://github.com/jcupitt/libvips/issues/291
	 */
	have_premultiplied = FALSE;
	if( in->Bands == 2 ||
		(in->Bands == 4 && in->Type != VIPS_INTERPRETATION_CMYK) ||
		in->Bands == 5 ) {
		vips_info( "vipsthumbnail", "premultiplying alpha" ); 
		if( vips_premultiply( in, &t[3], 
			"max_alpha", max_alpha,
			NULL ) ) 
			return( NULL );
		have_premultiplied = TRUE;

		/* vips_premultiply() makes a float image. When we
		 * vips_unpremultiply() below, we need to cast back to the
		 * pre-premultiply format.
		 */
		unpremultiplied_format = in->BandFmt;
		in = t[3];
	}

	shrink = calculate_shrink( in );

	if( vips_resize( in, &t[4], 1.0 / shrink, NULL ) ) 
		return( NULL );
	in = t[4];

	if( have_premultiplied ) {
		vips_info( "vipsthumbnail", "unpremultiplying alpha" ); 
		if( vips_unpremultiply( in, &t[5], 
			"max_alpha", max_alpha,
			NULL ) || 
			vips_cast( t[5], &t[6], unpremultiplied_format, NULL ) )
			return( NULL );
		in = t[6];
	}

	/* Colour management.
	 *
	 * If we've already imported, just export. Otherwise, we're in 
	 * device space and we need a combined import/export to transform to 
	 * the target space.
	 */
	if( have_imported ) { 
		if( export_profile ||
			vips_image_get_typeof( in, VIPS_META_ICC_NAME ) ) {
			vips_info( "vipsthumbnail", 
				"exporting to device space with a profile" );
			if( vips_icc_export( in, &t[7], 
				"output_profile", export_profile,
				NULL ) )  
				return( NULL );
			in = t[7];
		}
		else {
			vips_info( "vipsthumbnail", "converting to sRGB" );
			if( vips_colourspace( in, &t[7], 
				VIPS_INTERPRETATION_sRGB, NULL ) ) 
				return( NULL ); 
			in = t[7];
		}
	}
	else if( export_profile &&
		(vips_image_get_typeof( in, VIPS_META_ICC_NAME ) || 
		 import_profile) ) {
		VipsImage *out;

		vips_info( "vipsthumbnail", 
			"exporting with profile %s", export_profile );

		/* We first try with the embedded profile, if any, then if
		 * that fails try again with the supplied fallback profile.
		 */
		out = NULL; 
		if( vips_image_get_typeof( in, VIPS_META_ICC_NAME ) ) {
			vips_info( "vipsthumbnail", 
				"importing with embedded profile" );

			if( vips_icc_transform( in, &t[7], export_profile,
				"embedded", TRUE,
				NULL ) ) {
				vips_warn( "vipsthumbnail", 
					_( "unable to import with "
						"embedded profile: %s" ),
					vips_error_buffer() );

				vips_error_clear();
			}
			else
				out = t[7];
		}

		if( !out &&
			import_profile ) { 
			vips_info( "vipsthumbnail", 
				"importing with fallback profile" );

			if( vips_icc_transform( in, &t[7], export_profile,
				"input_profile", import_profile,
				"embedded", FALSE,
				NULL ) )  
				return( NULL );

			out = t[7];
		}

		/* If the embedded profile failed and there's no fallback or
		 * the fallback failed, out will still be NULL.
		 */
		if( out )
			in = out;
	}

	if( delete_profile &&
		vips_image_get_typeof( in, VIPS_META_ICC_NAME ) ) {
		vips_info( "vipsthumbnail", 
			"deleting profile from output image" );
		if( !vips_image_remove( in, VIPS_META_ICC_NAME ) ) 
			return( NULL );
	}

	return( in );
}