wrap im_remosaic() as a class

ChangeLog

@@ -33,8 +33,8 @@
 - added im_tile_cache_random() to help nip2
 - added hough_circle() to vips7 C++ API
 - added Travis CI config, thanks Lovell
-- im_*merge(), im_*mosaic(), im_match*(), im_global_balance*() redone as 
-  classes
+- im_*merge(), im_*mosaic(), im_match*(), im_global_balance*(), im_remosaic()
+  redone as classes
 
 6/3/14 started 7.38.6
 - grey ramp minimum was wrong

TODO

@@ -1,13 +1,10 @@
+- more mosaicing?
 
-- quickly wrap the useful bits of mosaicing
-
-  nip2 uses:
-
-	im_*merge()			done
-	im_*mosaic()			done
-	im_match_linear*()		done
-	im_global_balancef()		done
-	im_remosaic()
+	im_lrmerge1(), im_tbmerge1()
+	im_lrmosaic1(), im_tbmosaic1()
+	im_correl
+	im_align_bands()
+	im_maxpos_subpel()
 
 - can we use postbuild elsewhere? look at use of "preclose" / "written", etc. 
 

libvips/deprecated/vips7compat.c

@@ -5134,3 +5134,20 @@ im_global_balancef( IMAGE *in, IMAGE *out, double gamma )
 
 	return( 0 );
 }
+
+int
+im_remosaic( IMAGE *in, IMAGE *out, const char *old_str, const char *new_str )
+{
+	VipsImage *x;
+
+	if( vips_remosaic( in, &x, old_str, new_str, NULL ) ) 
+		return( -1 );
+
+	if( im_copy( x, out ) ) {
+		g_object_unref( x );
+		return( -1 );
+	}
+	g_object_unref( x );
+
+	return( 0 );
+}

libvips/include/vips/mosaicing.h

@@ -44,12 +44,17 @@ int vips_merge( VipsImage *ref, VipsImage *sec, VipsImage **out,
 int vips_mosaic( VipsImage *ref, VipsImage *sec, VipsImage **out, 
 	VipsDirection direction, int xref, int yref, int xsec, int ysec, ... )
 	__attribute__((sentinel));
+
 int vips_match( VipsImage *ref, VipsImage *sec, VipsImage **out, 
 	int xr1, int yr1, int xs1, int ys1, 
 	int xr2, int yr2, int xs2, int ys2, ... )
 	__attribute__((sentinel));
+
 int vips_globalbalance( VipsImage *in, VipsImage **out, ... )
 	__attribute__((sentinel));
+int vips_remosaic( VipsImage *in, VipsImage **out, 
+	const char *old_str, const char *new_str, ... )
+	__attribute__((sentinel));
 
 
 #include <vips/vips.h>
@@ -82,8 +87,6 @@ int im_correl( VipsImage *ref, VipsImage *sec,
 	int xref, int yref, int xsec, int ysec,
 	int hwindowsize, int hsearchsize,
 	double *correlation, int *x, int *y );
-int im_remosaic( VipsImage *in, VipsImage *out,
-	const char *old_str, const char *new_str );
 
 int im_align_bands( VipsImage *in, VipsImage *out );
 int im_maxpos_subpel( VipsImage *in, double *x, double *y );

libvips/include/vips/vips7compat.h

@@ -1064,6 +1064,9 @@ int im_match_linear_search( VipsImage *ref, VipsImage *sec, VipsImage *out,
 int im_global_balance( VipsImage *in, VipsImage *out, double gamma );
 int im_global_balancef( VipsImage *in, VipsImage *out, double gamma );
 
+int im_remosaic( VipsImage *in, VipsImage *out,
+	const char *old_str, const char *new_str );
+
 #ifdef __cplusplus
 }
 #endif /*__cplusplus*/

libvips/mosaicing/im_remosaic.c

@@ -56,15 +56,25 @@
 #include "mosaic.h"
 #include "global_balance.h"
 
-typedef struct _RemosaicData {
-	const char *old_str;
-	const char *new_str;
+typedef struct {
+	VipsOperation parent_instance;
+
+	VipsImage *in;
+	VipsImage *out;
+	char *old_str;
+	char *new_str;
+
 	int new_len;
 	int old_len;
-} RemosaicData;
+
+} VipsRemosaic;
+
+typedef VipsOperationClass VipsRemosaicClass;
+
+G_DEFINE_TYPE( VipsRemosaic, vips_remosaic, VIPS_TYPE_OPERATION );
 
 static IMAGE *
-remosaic( JoinNode *node, RemosaicData *rd )
+remosaic_fn( JoinNode *node, VipsRemosaic *remosaic )
 {
 	SymbolTable *st = node->st;
 	IMAGE *im = node->im;
@@ -79,17 +89,17 @@ remosaic( JoinNode *node, RemosaicData *rd )
 		return( NULL );
 	}
 
-	/* Remove substring rd->old_str from in->filename, replace with
-	 * rd->new_str.
+	/* Remove substring remosaic->old_str from in->filename, replace with
+	 * remosaic->new_str.
 	 */
 	im_strncpy( filename, im->filename, FILENAME_MAX );
-	if( (p = im_strrstr( filename, rd->old_str )) ) {
+	if( (p = im_strrstr( filename, remosaic->old_str )) ) {
 		int offset = p - &filename[0];
 
-		im_strncpy( p, rd->new_str, FILENAME_MAX - offset );
-		im_strncpy( p + rd->new_len,
-			im->filename + offset + rd->old_len, 
-			FILENAME_MAX - offset - rd->new_len );
+		im_strncpy( p, remosaic->new_str, FILENAME_MAX - offset );
+		im_strncpy( p + remosaic->new_len,
+			im->filename + offset + remosaic->old_len, 
+			FILENAME_MAX - offset - remosaic->new_len );
 	}
 
 #ifdef DEBUG
@@ -111,46 +121,111 @@ remosaic( JoinNode *node, RemosaicData *rd )
 	return( out );
 }
 
-/**
- * im_remosaic:
- * @in: mosaic to rebuild
- * @out: output image
- * @old_str: gamma of source images
- * @new_str: gamma of source images
- *
- * im_remosaic() works rather as im_global_balance(). It takes apart the
- * mosaiced image in and rebuilds it, substituting images.
- *
- * Unlike im_global_balance(), images are substituted based on their file‐
- * names.  The  rightmost  occurence  of the string @old_str is swapped
- * for @new_str, that file is opened, and that image substituted  for
- * the  old image.
- *
- * It's convenient for multispectral images. You can mosaic one band, then
- * use that mosaic as a template for mosaicing the others automatically.
- *
- * See also: im_lrmosaic(), im_global_balance().
- *
- * Returns: 0 on success, -1 on error
- */
-int
-im_remosaic( IMAGE *in, IMAGE *out, const char *old_str, const char *new_str )
+static int
+vips_remosaic_build( VipsObject *object )
 {
-	SymbolTable *st;
-	RemosaicData rd;
+	VipsRemosaic *remosaic = (VipsRemosaic *) object;
 
-	if( !(st = im__build_symtab( out, SYM_TAB_SIZE )) ||
-		im__parse_desc( st, in ) )
+	SymbolTable *st;
+
+	g_object_set( remosaic, "out", vips_image_new(), NULL ); 
+
+	if( VIPS_OBJECT_CLASS( vips_remosaic_parent_class )->
+		build( object ) )
 		return( -1 );
 
-	/* Re-make mosaic.
-	 */
-	rd.old_str = old_str;
-	rd.new_str = new_str;
-	rd.new_len = strlen( new_str );
-	rd.old_len = strlen( old_str );
-	if( im__build_mosaic( st, out, (transform_fn) remosaic, &rd ) )
+	if( !(st = im__build_symtab( remosaic->out, SYM_TAB_SIZE )) ||
+		im__parse_desc( st, remosaic->in ) )
+		return( -1 );
+
+	remosaic->old_len = strlen( remosaic->old_str );
+	remosaic->new_len = strlen( remosaic->new_str );
+	if( im__build_mosaic( st, remosaic->out, 
+		(transform_fn) remosaic_fn, remosaic ) )
 		return( -1 );
 
 	return( 0 );
 }
+
+static void
+vips_remosaic_class_init( VipsRemosaicClass *class )
+{
+	GObjectClass *gobject_class = G_OBJECT_CLASS( class );
+	VipsObjectClass *object_class = (VipsObjectClass *) class;
+
+	gobject_class->set_property = vips_object_set_property;
+	gobject_class->get_property = vips_object_get_property;
+
+	object_class->nickname = "remosaic";
+	object_class->description = _( "global balance an image mosaic" );
+	object_class->build = vips_remosaic_build;
+
+	VIPS_ARG_IMAGE( class, "in", 1, 
+		_( "Input" ), 
+		_( "Input image" ),
+		VIPS_ARGUMENT_REQUIRED_INPUT, 
+		G_STRUCT_OFFSET( VipsRemosaic, in ) );
+
+	VIPS_ARG_IMAGE( class, "out", 2, 
+		_( "Output" ), 
+		_( "Output image" ),
+		VIPS_ARGUMENT_REQUIRED_OUTPUT, 
+		G_STRUCT_OFFSET( VipsRemosaic, out ) );
+
+	VIPS_ARG_STRING( class, "old_str", 5, 
+		_( "old_str" ), 
+		_( "Search for this string" ),
+		VIPS_ARGUMENT_REQUIRED_INPUT,
+		G_STRUCT_OFFSET( VipsRemosaic, old_str ),
+		"" ); 
+
+	VIPS_ARG_STRING( class, "new_str", 6, 
+		_( "new_str" ), 
+		_( "And swap for this string" ),
+		VIPS_ARGUMENT_REQUIRED_INPUT,
+		G_STRUCT_OFFSET( VipsRemosaic, new_str ),
+		"" ); 
+
+}
+
+static void
+vips_remosaic_init( VipsRemosaic *remosaic )
+{
+}
+
+/**
+ * vips_remosaic:
+ * @in: mosaic to rebuild
+ * @out: output image
+ * @old_str: gamma of source images
+ * @new_str: gamma of source images
+ * @...: %NULL-terminated list of optional named arguments
+ *
+ * vips_remosaic() works rather as vips_globalbalance(). It takes apart the
+ * mosaiced image @in and rebuilds it, substituting images.
+ *
+ * Unlike vips_globalbalance(), images are substituted based on their file‐
+ * names.  The  rightmost  occurence  of the string @old_str is swapped
+ * for @new_str, that file is opened, and that image substituted  for
+ * the old image.
+ *
+ * It's convenient for multispectral images. You can mosaic one band, then
+ * use that mosaic as a template for mosaicing the others automatically.
+ *
+ * See also: vips_globalbalance().
+ *
+ * Returns: 0 on success, -1 on error
+ */
+int 
+vips_remosaic( VipsImage *in, VipsImage **out, 
+	const char *old_str, const char *new_str, ... )
+{
+	va_list ap;
+	int result;
+
+	va_start( ap, new_str );
+	result = vips_call_split( "remosaic", ap, in, out, old_str, new_str );
+	va_end( ap );
+
+	return( result );
+}