Added files rejected by import

[melted] / src / modules / core / filter_greyscale.c

diff --git a/src/modules/core/filter_greyscale.c b/src/modules/core/filter_greyscale.c
new file mode 100644 (file)
index 0000000..170ff4f
--- /dev/null
+++ b/src/modules/core/filter_greyscale.c
@@ -0,0 +1,73 @@
+/*
+ * filter_greyscale.c -- greyscale filter
+ * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
+ * Author: Charles Yates <charles.yates@pandora.be>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include "filter_greyscale.h"
+
+#include <framework/mlt_frame.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+/** Greyscale class.
+*/
+
+typedef struct 
+{
+       struct mlt_filter_s parent;
+}
+filter_greyscale;
+
+/** Do it :-).
+*/
+
+static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
+{
+       mlt_frame_get_image( this, image, format, width, height, 1 );
+       uint8_t *p = *image;
+       uint8_t *q = *image + *width * *height * 2;
+       while ( p ++ != q )
+               *p ++ = 128;
+       return 0;
+}
+
+/** Filter processing.
+*/
+
+static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
+{
+       mlt_frame_push_get_image( frame, filter_get_image );
+       return frame;
+}
+
+/** Constructor for the filter.
+*/
+
+mlt_filter filter_greyscale_init( void *arg )
+{
+       filter_greyscale *this = calloc( sizeof( filter_greyscale ), 1 );
+       if ( this != NULL )
+       {
+               mlt_filter filter = &this->parent;
+               mlt_filter_init( filter, this );
+               filter->process = filter_process;
+       }
+       return ( mlt_filter )this;
+}
+