research.m1stereo.tv/gitweb/ - melted/blob - src/modules/oldfilm/filter_lines.c

   1 /*
   2  * filter_lines.c -- lines filter
   3  * Copyright (c) 2007 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_filter.h>
  21 #include <framework/mlt_frame.h>
  22
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <math.h>
  26
  27
  28 static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
  29 {
  30
  31         mlt_filter filter = mlt_frame_pop_service( this );
  32         int error = mlt_frame_get_image( this, image, format, width, height, 1 );
  33
  34         if ( error == 0 && *image && *format == mlt_image_yuv422 )
  35         {
  36                 int h = *height;
  37                 int w = *width;
  38
  39                 int width = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "width" );
  40                 int num = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "num" );
  41                 //int frame = mlt_properties_get_int( this, "_position" );
  42                 char buf[1024];
  43
  44                 while (num--){
  45                         sprintf(buf,"line%d",num);
  46
  47                         int type=rand()%2;
  48                         int x1=rand()%w;;
  49                         int dx=rand()%width;
  50                         /*int xx=mlt_properties_get_int(MLT_PRODUCER_PROPERTIES(mlt_frame_get_original_producer( this ),buf);
  51                         if (xx==0){
  52                                 mlt_properties_set_int(this,buf,x1);
  53                                 //x1=100;
  54                         }
  55                         x1=mlt_properties_get_int(this,buf)+5;
  56                         */
  57                         int x=0,y=0,pix=0;
  58                         for (x=-dx;x<dx;x++)
  59                                 for(y=0;y<h;y++)
  60                                         if (x+x1<w && x+x1>0){
  61                                                 uint8_t* pixel=(*image+(y)*w*2+(x+x1)*2);
  62                                                 switch(type){
  63                                                         case 0:
  64                                                                 pix=(*pixel)*abs(x)/dx;
  65                                                                 *pixel=pix;
  66                                                                 break;
  67                                                         case 1:
  68                                                                 pix=(*pixel)+((255-*pixel)*abs(x)/dx);
  69                                                                 *pixel=pix;
  70                                                                 break;
  71                                                 }
  72
  73                                 }
  74                 }
  75         }
  76
  77         return error;
  78 }
  79
  80 static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
  81 {
  82
  83         mlt_frame_push_service( frame, this );
  84         mlt_frame_push_get_image( frame, filter_get_image );
  85         return frame;
  86 }
  87
  88 mlt_filter filter_lines_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
  89 {
  90         mlt_filter this = mlt_filter_new( );
  91         if ( this != NULL )
  92         {
  93                 this->process = filter_process;
  94                 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "width", "2" );
  95                 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "num", "5" );
  96         }
  97         return this;
  98 }
  99
 100