git.sesse.net Git - mlt/blob - src/modules/oldfilm/filter_dust.c

   1 /*
   2  * filter_dust.c -- dust 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 #include <framework/mlt.h>
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <math.h>
  27 #include <string.h>
  28 #include <time.h>
  29
  30 static void overlay_image(uint8_t *src, int src_width, int src_height , uint8_t * overlay, int overlay_width, int overlay_height, uint8_t * alpha , int xpos, int ypos, int upsidedown , int mirror ){
  31         int x,y;
  32
  33         for (y=ypos;y<src_height ; y++){
  34                 if ( y>=0 && (y-ypos)<overlay_height ){
  35                         uint8_t *scanline_image=src+src_width*y*2;
  36                         int overlay_y = upsidedown ?  ( overlay_height - ( y - ypos ) - 1 ) : ( y - ypos  );
  37                         uint8_t *scanline_overlay=overlay + overlay_width * 2 * overlay_y;
  38
  39                         for ( x = xpos  ;  x < src_width  && x-xpos < overlay_width ;x++){
  40                                 if ( x>0  ){
  41                                         int overlay_x = mirror ? overlay_width - ( x - xpos ) -1 : ( x - xpos );
  42                                         double alp=(double)*(alpha+ overlay_width * overlay_y + overlay_x )/255.0;
  43                                         uint8_t* image_pixel = scanline_image + x * 2;
  44                                         uint8_t* overlay_pixel = scanline_overlay + overlay_x * 2;
  45
  46                                         *image_pixel=(double)(*overlay_pixel)*alp+ (double)*image_pixel*(1.0-alp) ;
  47                                         if (xpos%2==0)
  48                                                 image_pixel++;
  49                                         else
  50                                                 image_pixel+=3;
  51
  52                                         mirror? overlay_pixel-- : overlay_pixel++;
  53
  54                                         *image_pixel=(double)(*(overlay_pixel))*alp + (double)(*image_pixel )*(1.0-alp) ;
  55                                 }
  56
  57                         }
  58                 }
  59         }
  60 }
  61
  62 static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
  63 {
  64         mlt_filter filter = mlt_frame_pop_service( this );
  65
  66         int maxdia = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "maxdiameter" );
  67         int maxcount = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "maxcount" );
  68
  69         mlt_position in = mlt_filter_get_in( filter );
  70         mlt_position out = mlt_filter_get_out( filter );
  71         mlt_position time = mlt_frame_get_position( this );
  72         double position = ( double )( time - in ) / ( double )( out - in + 1 );
  73
  74         *format = mlt_image_yuv422;
  75         int error = mlt_frame_get_image( this, image, format, width, height, 1 );
  76         // load svg
  77         mlt_properties properties = MLT_FILTER_PROPERTIES( filter );
  78         char *factory = mlt_properties_get( properties, "factory" );
  79         char temp[1204]="";
  80         sprintf( temp, "%s/oldfilm/", mlt_environment( "MLT_DATA" ) );
  81
  82         mlt_properties direntries=mlt_properties_new();
  83         mlt_properties_dir_list(direntries,temp,"dust*.svg",1);
  84
  85         if (!maxcount)
  86                 return 0;
  87         srand(position*10000);
  88
  89         int im=rand()%maxcount;
  90         int piccount=mlt_properties_count(direntries);
  91         while (im-- && piccount){
  92
  93                 int picnum=rand()%piccount;
  94
  95                 int y1=rand()%*height;
  96                 int x1=rand()%*width;
  97                 char resource[1024]="";
  98                 char savename[1024]="",savename1[1024]="", cachedy[100];
  99                 int dx=(*width*maxdia/100);
 100                 int luma_width,luma_height;
 101                 uint8_t *luma_image = NULL;
 102                 uint8_t *alpha =NULL;
 103                 int updown= rand()%2;
 104                 int mirror=rand()%2;
 105
 106                 sprintf(resource,"%s",mlt_properties_get_value(direntries,picnum));
 107                 sprintf(savename,"cache-%d-%d",picnum,dx);
 108                 sprintf(savename1,"cache-alpha-%d-%d",picnum,dx);
 109                 sprintf(cachedy,"cache-dy-%d-%d",picnum,dx);
 110
 111                 luma_image= mlt_properties_get_data( properties , savename , NULL );
 112                 alpha= mlt_properties_get_data( properties , savename1 , NULL );
 113
 114                 if (luma_image == NULL || alpha == NULL ){
 115                         mlt_profile profile = mlt_service_profile( MLT_FILTER_SERVICE( filter ) );
 116                         mlt_producer producer = mlt_factory_producer( profile, factory, resource );
 117
 118                         if ( producer != NULL )
 119                         {
 120                                 mlt_properties producer_properties = MLT_PRODUCER_PROPERTIES( producer );
 121
 122                                 mlt_properties_set( producer_properties, "eof", "loop" );
 123                                 mlt_frame luma_frame = NULL;
 124
 125                                 if ( mlt_service_get_frame( MLT_PRODUCER_SERVICE( producer ), &luma_frame, 0 ) == 0 ){
 126
 127                                         mlt_properties_set_double ( MLT_FRAME_PROPERTIES ( luma_frame ) , "consumer_aspect_ratio" , 1.0 );
 128                                         mlt_image_format luma_format = mlt_image_yuv422;
 129                                         luma_width = dx;
 130                                         luma_height = luma_width * mlt_properties_get_int( MLT_FRAME_PROPERTIES ( luma_frame ) , "height" ) / mlt_properties_get_int( MLT_FRAME_PROPERTIES ( luma_frame ) , "width" );
 131
 132                                         mlt_properties_set( MLT_FRAME_PROPERTIES( luma_frame ), "rescale.interp", "best" );// none/nearest/tiles/hyper
 133
 134                                         mlt_frame_get_image( luma_frame, &luma_image, &luma_format, &luma_width, &luma_height, 0 );
 135                                         alpha =mlt_frame_get_alpha_mask(luma_frame);
 136
 137                                         uint8_t* savealpha=mlt_pool_alloc ( luma_width * luma_height );
 138                                         uint8_t* savepic=mlt_pool_alloc ( luma_width * luma_height * 2);
 139
 140                                         if (savealpha && savepic ){
 141                                                 memcpy (savealpha, alpha , luma_width * luma_height );
 142                                                 memcpy (savepic, luma_image , luma_width * luma_height * 2);
 143
 144                                                 mlt_properties_set_data ( properties , savename , savepic , sizeof(uint8_t*) , mlt_pool_release, NULL );
 145                                                 mlt_properties_set_data ( properties , savename1 , savealpha , sizeof(uint8_t*)  ,  mlt_pool_release, NULL );
 146                                                 mlt_properties_set_int ( properties , cachedy , luma_height );
 147
 148                                                 overlay_image(*image,*width,*height,luma_image,luma_width,luma_height, alpha, x1, y1 , updown , mirror );
 149                                         }
 150                                         mlt_frame_close( luma_frame );
 151                                 }
 152                                 mlt_producer_close( producer );
 153                         }
 154                 }else {
 155                         overlay_image ( *image , *width, *height , luma_image , dx , mlt_properties_get_int ( properties , cachedy ) , alpha , x1 , y1 , updown , mirror );
 156                 }
 157         }
 158         if (piccount>0 )
 159                 return 0;
 160         if ( error == 0 && *image )
 161         {
 162
 163                 int h = *height;
 164                 int w = *width;
 165                 if (maxcount==0)
 166                         return 0;
 167
 168                 int im=rand()%maxcount;
 169
 170                 while (im-- ){
 171                         int type=im%2;
 172                         int y1=rand()%h;
 173                         int x1=rand()%w;
 174                         int dx=rand()%maxdia;
 175                         int dy=rand()%maxdia;
 176                         int x=0,y=0;//,v=0;
 177                         double v=0.0;
 178                         for ( x = -dx ; x < dx ; x++ )
 179                                 for ( y = -dy ; y < dy ; y++ ) {
 180                                         if ( x1+x < w && x1+x > 0 && y1+y < h && y1+y > 0 ){
 181                                                 uint8_t *pix=*image+(y+y1)*w*2+(x+x1)*2;
 182                                                 //v=(1.0-fabs(x)/dx)*(1.0-fabs(y)/dy);
 183                                                 v=pow((double)x/(double)dx*5.0,2.0)+pow((double)y/(double)dy*5.0,2.0);
 184                                                 if (v>10)
 185                                                         v=10;
 186                                                 v=1.0-(v/10.0);
 187
 188                                                 switch(type){
 189                                                         case 0:
 190                                                                 *pix-=(*pix)*v;
 191                                                                 break;
 192                                                         case 1:
 193                                                                 *pix+=(255-*pix)*v;
 194                                                                 break;
 195                                                 }
 196                                         }
 197                                 }
 198                 }
 199         }
 200
 201         return error;
 202 }
 203
 204 static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
 205 {
 206
 207         mlt_frame_push_service( frame, this );
 208         mlt_frame_push_get_image( frame, filter_get_image );
 209         return frame;
 210 }
 211
 212
 213 mlt_filter filter_dust_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
 214 {
 215         mlt_filter this = mlt_filter_new( );
 216         if ( this != NULL )
 217         {
 218                 this->process = filter_process;
 219                 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "maxdiameter", "2" );
 220                 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "maxcount", "10" );
 221         }
 222         return this;
 223 }
 224
 225