research.m1stereo.tv/gitweb/ - melted/blob - src/modules/frei0r/filter_frei0r.c

   1 /*
   2  * filter_frei0r.c -- frei0r filter
   3  * Copyright (c) 2008 Marco Gittler <g.marco@freenet.de>
   4  *
   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.
   9  *
  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.
  14  *
  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
  18  */
  19
  20 #include <framework/mlt.h>
  21
  22 #include "frei0r_helper.h"
  23 #include <string.h>
  24 static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
  25 {
  26
  27         mlt_filter filter = mlt_frame_pop_service( this );
  28         int error = mlt_frame_get_image( this, image, format, width, height, 1 );
  29
  30         if ( error == 0 && *image && *format == mlt_image_yuv422 )
  31         {
  32                 mlt_position in = mlt_filter_get_in( filter );
  33                 mlt_position out = mlt_filter_get_out( filter );
  34                 mlt_position time = mlt_frame_get_position( this );
  35                 double position = ( double )( time - in ) / ( double )( out - in + 1 );
  36
  37                 process_frei0r_item( filter_type , position, MLT_FILTER_PROPERTIES ( filter ), this , image, format , width , height , writable );
  38
  39         }
  40
  41         return error;
  42 }
  43
  44
  45 mlt_frame filter_process( mlt_filter this, mlt_frame frame )
  46 {
  47         mlt_frame_push_service( frame, this );
  48         mlt_frame_push_get_image( frame, filter_get_image );
  49         return frame;
  50 }
  51
  52 void filter_close( mlt_filter this ){
  53
  54         destruct( MLT_FILTER_PROPERTIES ( this ) );
  55
  56 }