src/modules/oldfilm/*: add oldfilm module contributed by Marco Gittler

[melted] / src / modules / oldfilm / filter_lines.c

diff --git a/src/modules/oldfilm/filter_lines.c b/src/modules/oldfilm/filter_lines.c
new file mode 100644 (file)
index 0000000..c840ae0
--- /dev/null
+++ b/src/modules/oldfilm/filter_lines.c
@@ -0,0 +1,101 @@
+/*
+ * filter_lines.c -- lines filter
+ * Copyright (c) 2007 Marco Gittler <g.marco@freenet.de>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "filter_lines.h"
+
+#include <framework/mlt_frame.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+
+static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
+{
+
+       mlt_filter filter = mlt_frame_pop_service( this );
+       int error = mlt_frame_get_image( this, image, format, width, height, 1 );
+
+       if ( error == 0 && *image && *format == mlt_image_yuv422 )
+       {
+               int h = *height;
+               int w = *width;
+
+               int width = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "width" );
+               int num = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "num" );
+               //int frame = mlt_properties_get_int( this, "_position" );
+               char buf[1024];
+               
+               while (num--){
+                       sprintf(buf,"line%d",num);
+                       
+                       int type=rand()%2;
+                       int x1=rand()%w;;
+                       int dx=rand()%width;
+                       /*int xx=mlt_properties_get_int(MLT_PRODUCER_PROPERTIES(mlt_frame_get_original_producer( this ),buf);
+                       if (xx==0){
+                               mlt_properties_set_int(this,buf,x1);
+                               //x1=100;
+                       }
+                       x1=mlt_properties_get_int(this,buf)+5;
+                       */
+                       int x=0,y=0,pix=0;
+                       for (x=-dx;x<dx;x++)
+                               for(y=0;y<h;y++)
+                                       if (x+x1<w && x+x1>0){
+                                               uint8_t* pixel=(*image+(y)*w*2+(x+x1)*2);
+                                               switch(type){
+                                                       case 0:
+                                                               pix=(*pixel)*abs(x)/dx;
+                                                               *pixel=pix;
+                                                               break;
+                                                       case 1:
+                                                               pix=(*pixel)+((255-*pixel)*abs(x)/dx);
+                                                               *pixel=pix;
+                                                               break;
+                                               }
+                                                       
+                               }
+               }
+       }
+
+       return error;
+}
+
+static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
+{
+
+       mlt_frame_push_service( frame, this );
+       mlt_frame_push_get_image( frame, filter_get_image );
+       return frame;
+}
+
+mlt_filter filter_lines_init( char *arg )
+{
+       mlt_filter this = mlt_filter_new( );
+       if ( this != NULL )
+       {
+               this->process = filter_process;
+               mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "width", "2" );
+               mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "num", "5" );
+       }
+       return this;
+}
+
+