2 * filter_lines.c -- lines filter
3 * Copyright (c) 2007 Marco Gittler <g.marco@freenet.de>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #include "filter_lines.h"
22 #include <framework/mlt_frame.h>
29 static int filter_get_image( mlt_frame
this, uint8_t **image
, mlt_image_format
*format
, int *width
, int *height
, int writable
)
32 mlt_filter filter
= mlt_frame_pop_service( this );
33 int error
= mlt_frame_get_image( this, image
, format
, width
, height
, 1 );
35 if ( error
== 0 && *image
&& *format
== mlt_image_yuv422
)
40 int width
= mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter
), "width" );
41 int num
= mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter
), "num" );
42 //int frame = mlt_properties_get_int( this, "_position" );
46 sprintf(buf
,"line%d",num
);
51 /*int xx=mlt_properties_get_int(MLT_PRODUCER_PROPERTIES(mlt_frame_get_original_producer( this ),buf);
53 mlt_properties_set_int(this,buf,x1);
56 x1=mlt_properties_get_int(this,buf)+5;
61 if (x
+x1
<w
&& x
+x1
>0){
62 uint8_t* pixel
=(*image
+(y
)*w
*2+(x
+x1
)*2);
65 pix
=(*pixel
)*abs(x
)/dx
;
69 pix
=(*pixel
)+((255-*pixel
)*abs(x
)/dx
);
81 static mlt_frame
filter_process( mlt_filter
this, mlt_frame frame
)
84 mlt_frame_push_service( frame
, this );
85 mlt_frame_push_get_image( frame
, filter_get_image
);
89 mlt_filter
filter_lines_init( char *arg
)
91 mlt_filter
this = mlt_filter_new( );
94 this->process
= filter_process
;
95 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "width", "2" );
96 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "num", "5" );