2 * filter_dust.c -- dust 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 <framework/mlt_filter.h>
21 //#include <framework/mlt_frame.h>
22 #include <framework/mlt.h>
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 ){
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;
39 for ( x = xpos ; x < src_width && x-xpos < overlay_width ;x++){
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;
46 *image_pixel=(double)(*overlay_pixel)*alp+ (double)*image_pixel*(1.0-alp) ;
52 mirror? overlay_pixel-- : overlay_pixel++;
54 *image_pixel=(double)(*(overlay_pixel))*alp + (double)(*image_pixel )*(1.0-alp) ;
62 static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
64 mlt_filter filter = mlt_frame_pop_service( this );
66 int maxdia = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "maxdiameter" );
67 int maxcount = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "maxcount" );
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 );
74 *format = mlt_image_yuv422;
75 int error = mlt_frame_get_image( this, image, format, width, height, 1 );
77 mlt_properties properties = MLT_FILTER_PROPERTIES( filter );
78 char *factory = mlt_properties_get( properties, "factory" );
80 sprintf( temp, "%s/oldfilm/", mlt_environment( "MLT_DATA" ) );
82 mlt_properties direntries=mlt_properties_new();
83 mlt_properties_dir_list(direntries,temp,"dust*.svg",1);
87 srand(position*10000);
89 mlt_service_lock( MLT_FILTER_SERVICE( filter ) );
91 int im=rand()%maxcount;
92 int piccount=mlt_properties_count(direntries);
93 while (im-- && piccount){
95 int picnum=rand()%piccount;
97 int y1=rand()%*height;
99 char resource[1024]="";
100 char savename[1024]="",savename1[1024]="", cachedy[100];
101 int dx=(*width*maxdia/100);
102 int luma_width,luma_height;
103 uint8_t *luma_image = NULL;
104 uint8_t *alpha =NULL;
105 int updown= rand()%2;
108 sprintf(resource,"%s",mlt_properties_get_value(direntries,picnum));
109 sprintf(savename,"cache-%d-%d",picnum,dx);
110 sprintf(savename1,"cache-alpha-%d-%d",picnum,dx);
111 sprintf(cachedy,"cache-dy-%d-%d",picnum,dx);
113 luma_image= mlt_properties_get_data( properties , savename , NULL );
114 alpha= mlt_properties_get_data( properties , savename1 , NULL );
116 if (luma_image == NULL || alpha == NULL ){
117 mlt_profile profile = mlt_service_profile( MLT_FILTER_SERVICE( filter ) );
118 mlt_producer producer = mlt_factory_producer( profile, factory, resource );
120 if ( producer != NULL )
122 mlt_properties producer_properties = MLT_PRODUCER_PROPERTIES( producer );
124 mlt_properties_set( producer_properties, "eof", "loop" );
125 mlt_frame luma_frame = NULL;
127 if ( mlt_service_get_frame( MLT_PRODUCER_SERVICE( producer ), &luma_frame, 0 ) == 0 ){
129 mlt_properties_set_double ( MLT_FRAME_PROPERTIES ( luma_frame ) , "consumer_aspect_ratio" , 1.0 );
130 mlt_image_format luma_format = mlt_image_yuv422;
132 luma_height = luma_width * mlt_properties_get_int( MLT_FRAME_PROPERTIES ( luma_frame ) , "height" ) / mlt_properties_get_int( MLT_FRAME_PROPERTIES ( luma_frame ) , "width" );
134 mlt_properties_set( MLT_FRAME_PROPERTIES( luma_frame ), "rescale.interp", "best" );// none/nearest/tiles/hyper
136 mlt_frame_get_image( luma_frame, &luma_image, &luma_format, &luma_width, &luma_height, 0 );
137 alpha =mlt_frame_get_alpha_mask(luma_frame);
139 uint8_t* savealpha=mlt_pool_alloc ( luma_width * luma_height );
140 uint8_t* savepic=mlt_pool_alloc ( luma_width * luma_height * 2);
142 if (savealpha && savepic ){
143 memcpy (savealpha, alpha , luma_width * luma_height );
144 memcpy (savepic, luma_image , luma_width * luma_height * 2);
146 mlt_properties_set_data ( properties , savename , savepic , sizeof(uint8_t*) , mlt_pool_release, NULL );
147 mlt_properties_set_data ( properties , savename1 , savealpha , sizeof(uint8_t*) , mlt_pool_release, NULL );
148 mlt_properties_set_int ( properties , cachedy , luma_height );
150 overlay_image(*image,*width,*height,luma_image,luma_width,luma_height, alpha, x1, y1 , updown , mirror );
152 mlt_frame_close( luma_frame );
154 mlt_producer_close( producer );
157 overlay_image ( *image , *width, *height , luma_image , dx , mlt_properties_get_int ( properties , cachedy ) , alpha , x1 , y1 , updown , mirror );
161 mlt_service_unlock( MLT_FILTER_SERVICE( filter ) );
165 if ( error == 0 && *image )
173 int im=rand()%maxcount;
179 int dx=rand()%maxdia;
180 int dy=rand()%maxdia;
183 for ( x = -dx ; x < dx ; x++ )
184 for ( y = -dy ; y < dy ; y++ ) {
185 if ( x1+x < w && x1+x > 0 && y1+y < h && y1+y > 0 ){
186 uint8_t *pix=*image+(y+y1)*w*2+(x+x1)*2;
187 //v=(1.0-fabs(x)/dx)*(1.0-fabs(y)/dy);
188 v=pow((double)x/(double)dx*5.0,2.0)+pow((double)y/(double)dy*5.0,2.0);
209 static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
212 mlt_frame_push_service( frame, this );
213 mlt_frame_push_get_image( frame, filter_get_image );
218 mlt_filter filter_dust_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
220 mlt_filter this = mlt_filter_new( );
223 this->process = filter_process;
224 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "maxdiameter", "2" );
225 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "maxcount", "10" );