sync

TODO

@@ -1,9 +1,4 @@
-- max is broken
-
-	$ ~/vips-7.26/bin/vips-7.26 vips im_max sarto_ng.tif 
-	255
-	$ vips max sarto_ng.tif 
-	165.000000
+- im_open_local() is broken? try Adam's prog under 7.27
 
 
 

libvips/arithmetic/stats.c

@@ -74,10 +74,14 @@
  * @out: image of statistics
  *
  * Find many image statistics in a single pass through the data. @out is a
- * one-band #VIPS_FORMAT_DOUBLE image 
- * of 6 columns by n + 1 (where n is number of bands in image @in) 
+ * one-band #VIPS_FORMAT_DOUBLE image of at least 10 columns by n + 1 
+ * (where n is number of bands in image @in) 
  * rows. Columns are statistics, and are, in order: minimum, maximum, sum, 
- * sum of squares, mean, standard deviation. Row 0 has statistics for all 
+ * sum of squares, mean, standard deviation, x coordinate of minimum, y
+ * coordinate of minimum, x coordinate of maximum, y coordinate of maximum. 
+ * Later versions of VipsStats may add more columns.
+ *
+ * Row 0 has statistics for all 
  * bands together, row 1 has stats for band 1, and so on.
  *
  * See also: #VipsAvg, #VipsMin, and friends.
@@ -90,9 +94,6 @@ typedef struct _VipsStats {
 
 	VipsImage *out;
 
-	or build out and use that as an array?
-
-	double **stats;
 } VipsStats;
 
 typedef VipsStatisticClass VipsStatsClass;
@@ -108,6 +109,14 @@ vips_stats_build( VipsObject *object )
 	gint64 vals;
 	double average;
 
+	if( statistic->in ) {
+		int bands = vips_image_get_bands( statistic->in->Bands );
+
+		g_object_set( object, 
+			"out", vips_image_new_array( 10, bands + 1 ),
+			NULL );
+	}
+
 	if( VIPS_OBJECT_CLASS( vips_stats_parent_class )->build( object ) )
 		return( -1 );
 
@@ -121,7 +130,6 @@ vips_stats_build( VipsObject *object )
 	average = stats->sum / vals;
 	if( vips_bandfmt_iscomplex( vips_image_get_format( statistic->in ) ) )
 		average = sqrt( average );
-	g_object_set( object, "out", average, NULL );
 
 	return( 0 );
 }

libvips/include/vips/image.h

@@ -469,6 +469,7 @@ VipsImage *vips_image_new_from_file_raw( const char *filename,
 	int xsize, int ysize, int bands, int offset );
 VipsImage *vips_image_new_from_memory( void *buffer, 
 	int xsize, int ysize, int bands, VipsBandFormat bandfmt );
+VipsImage *vips_image_new_array( int xsize, int ysize );
 void vips_image_set_delete_on_close( VipsImage *image, 
 	gboolean delete_on_close );
 VipsImage *vips_image_new_disc_temp( const char *format );

libvips/iofuncs/image.c

@@ -1615,6 +1615,47 @@ vips_image_new_from_memory( void *buffer,
 	return( image );
 }
 
+/**
+ * vips_image_new_array:
+ * @xsize: image width
+ * @ysize: image height
+ *
+ * This convenience function makes an image which is an array: a one-band
+ * VIPS_FORMAT_DOUBLE image held in memory.
+ *
+ * Use VIPS_IMAGE_ADDR() to address pixels in the image.
+ * 
+ * Returns: the new #VipsImage, or %NULL on error.
+ */
+VipsImage *
+vips_image_new_array( int xsize, int ysize )
+{
+	VipsImage *image;
+
+	vips_check_init();
+
+	image = VIPS_IMAGE( g_object_new( VIPS_TYPE_IMAGE, NULL ) );
+	g_object_set( image,
+		"filename", "vips_image_new_array",
+		"mode", "t",
+		"width", xsize,
+		"height", ysize,
+		"bands", 1,
+		"format", VIPS_FORMAT_DOUBLE,
+		NULL );
+	if( vips_object_build( VIPS_OBJECT( image ) ) ) {
+		VIPS_UNREF( image );
+		return( NULL );
+	}
+
+	if( vips__image_write_prepare( image ) ) {
+		g_object_unref( image );
+		return( NULL );
+	}
+
+	return( image );
+}
+
 /**
  * vips_image_set_delete_on_close:
  * @image: image to set
@@ -1843,10 +1884,10 @@ vips__image_write_prepare( VipsImage *image )
 	case VIPS_IMAGE_SETBUF:
 		/* Allocate memory.
 		 */
-		if( !image->data ) 
-			if( !(image->data = vips_tracked_malloc( 
+		if( !image->data && 
+			!(image->data = vips_tracked_malloc( 
 				VIPS_IMAGE_SIZEOF_IMAGE( image ))) ) 
-				return( -1 );
+			return( -1 );
 
 		break;