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

   1 /*
   2  * filter_oldfilm.c -- oldfilm 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 static double sinarr[]={
  27 //      0.0,0.125270029508395,0.2485664757507,0.3679468485397,0.481530353985902,
  28 //      0.587527525713892,0.684268417247276,0.770228911401552,0.84405473219009,0.904582780944473,
  29 //      0.95085946050647,0.982155698800724,0.997978435097294,0.99807838800221,0.982453982794196,
  30 //      0.951351376233828,0.90526057845426,0.844907733031696,0.771243676860277,0.685428960066342,
  31 //      0.588815561967795,0.48292559113694,0.369427305139443,0.250108827749629,0.12684997771773,
  32 //      0.00159265291648683,-0.123689763546002,-0.247023493251739,-0.366465458626247,-0.48013389541149,
  33 //      -0.586237999170027,-0.683106138750633,-0.769212192222595,-0.84319959036574,-0.903902688919827,
  34 //      -0.950365132881376,-0.981854923525203,-0.997875950775248,-0.998175809236459,-0.982749774749007,
  35 //      -0.951840878815686,-0.905936079729926,-0.845758590726883,-0.772256486024771,-0.68658776426406,
  36 //      -0.590102104664575,-0.484319603325524,-0.37090682467023,-0.251650545336281,-0.128429604166398,0.0
  37 0.0,0.0627587292804297,0.125270029508395,0.18728744713136,0.2485664757507,0.308865520098932,0.3679468485397,0.425577530335206,0.481530353985902,0.535584723021826,0.587527525713892,0.637153975276265,0.684268417247276,0.728685100865749,0.770228911401552,0.80873606055313,0.84405473219009,0.876045680894979,0.904582780944473,0.929553523565587,0.95085946050647,0.968416592172968,0.982155698800724,0.99202261335714,0.997978435097294,0.999999682931835,0.99807838800221,0.992222125098244,0.982453982794196,0.968812472421035,0.951351376233828,0.930139535372831,0.90526057845426,0.876812591860795,0.844907733031696,0.809671788277164,0.771243676860277,0.72977490330168,0.685428960066342,0.638380682987321,0.588815561967795,0.536929009678953,0.48292559113694,0.427018217196276,0.369427305139443,0.310379909672042,0.250108827749629,0.188851680765468,0.12684997771773,0.064348163049637,0.00159265291648683,-0.0611691363208864,-0.123689763546002,-0.18572273843423,-0.247023493251739,-0.307350347074556,-0.366465458626247,-0.424135763977612,-0.48013389541149,-0.534239077829989,-0.586237999170027,-0.635925651395529,-0.683106138750633,-0.727593450087328,-0.769212192222595,-0.807798281433749,-0.84319959036574,-0.875276547799941,-0.903902688919827,-0.928965153904073,-0.950365132881376,-0.968018255492714,-0.981854923525203,-0.991820585306115,-0.997875950775248,-0.999997146387718,-0.998175809236459,-0.992419120023356,-0.982749774749007,-0.969205895232745,-0.951840878815686,-0.930723187839362,-0.905936079729926,-0.877577278752084,-0.845758590726883,-0.810605462232336,-0.772256486024771,-0.730862854630786,-0.68658776426406,-0.639605771417098,-0.590102104664575,-0.538271934391528,-0.484319603325524,-0.428457820906457,-0.37090682467023,-0.311893511952568,-0.251650545336281,-0.190415435368805,-0.128429604166398,-0.0659374335968388,0.0,
  38
  39 };
  40
  41 static int filter_get_image( mlt_frame this, uint8_t **image, mlt_image_format *format, int *width, int *height, int writable )
  42 {
  43
  44         mlt_filter filter = mlt_frame_pop_service( this );
  45         *format = mlt_image_yuv422;
  46         int error = mlt_frame_get_image( this, image, format, width, height, 1 );
  47
  48         if (  error == 0 && *image )
  49         {
  50                 int h = *height;
  51                 int w = *width;
  52
  53                 int x=0;
  54                 int y=0;
  55
  56                 double position = mlt_filter_get_progress( filter, this );
  57                 srand(position*10000);
  58
  59                 int delta = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "delta" );
  60                 int every = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "every" );
  61
  62                 int bdu = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "brightnessdelta_up" );
  63                 int bdd = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "brightnessdelta_down" );
  64                 int bevery = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "brightnessdelta_every" );
  65
  66                 int udu = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "unevendevelop_up" );
  67                 int udd = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "unevendevelop_down" );
  68                 int uduration = mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "unevendevelop_duration" );
  69
  70                 int diffpic=0;
  71                 if (delta)
  72                         diffpic=rand()%delta*2-delta;
  73
  74                 int brightdelta=0;
  75                 if ((bdu+bdd)!=0)
  76                          brightdelta=rand()%(bdu+bdd)-bdd;
  77                 if (rand()%100>every)
  78                         diffpic=0;
  79                 if (rand()%100>bevery)
  80                         brightdelta=0;
  81                 int yend,ydiff;
  82                 int unevendevelop_delta=0;
  83                 if (uduration>0){
  84                         float uval= sinarr[ ( ((int)position) % uduration) * 100 / uduration ] ;
  85                         unevendevelop_delta = uval * ( uval>0 ? udu : udd );
  86                 }
  87
  88
  89
  90                 if (diffpic<=0){
  91                         y=h;
  92                         yend=0;
  93                         ydiff=-1;
  94                 }else{
  95                         y=0;
  96                         yend=h;
  97                         ydiff=1;
  98                 }
  99
 100                 while(y!=yend){
 101                         //int newy=y+diffpic;
 102                         for (x=0;x<w;x++){
 103                                         uint8_t* pic=(*image+y*w*2+x*2);
 104                                         int newy=y+diffpic;
 105                                         if (newy>0 && newy<h ){
 106                                                 uint8_t oldval=*(pic+diffpic*w*2);
 107                                                 /* frame around
 108                                                 int randx=(x<=frameborder)?x:(x+frameborder>w)?w-x:-1;
 109                                                 int randy=((newy)<=frameborder)?(newy):((newy)+frameborder>h)?h-(y+diffpic):-1;
 110                                                 if (randx>=0 ){
 111                                                         oldval=oldval*pow(((double)randx/(double)frameborder),1.5);
 112                                                 }
 113                                                 if (randy>=0 ){
 114                                                         oldval=oldval*pow(((double)randy/(double)frameborder),1.5);
 115                                                 }
 116                                                 if (randx>=0 && randy>=0){
 117                                                         //oldval=oldval*(randx*randy)/500.0;
 118                                                 }
 119                                                 */
 120                                                 if ( ((int) oldval + brightdelta + unevendevelop_delta ) >255)
 121                                                         *pic=255;
 122                                                 else if ( ( (int) oldval + brightdelta + unevendevelop_delta )  <0){
 123                                                         *pic=0;
 124                                                 }else
 125                                                         *pic = oldval + brightdelta + unevendevelop_delta;
 126                                                 *(pic+1)=*(pic+diffpic*w*2+1);
 127
 128                                         }else{
 129                                                 *pic=0;
 130                                                 //*(pic-1)=127;
 131                                         }
 132
 133                         }
 134                         y+=ydiff;
 135                 }
 136         }
 137
 138         return error;
 139 }
 140
 141 static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
 142 {
 143
 144         mlt_frame_push_service( frame, this );
 145         mlt_frame_push_get_image( frame, filter_get_image );
 146         return frame;
 147 }
 148
 149 mlt_filter filter_oldfilm_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
 150 {
 151         mlt_filter this = mlt_filter_new( );
 152         if ( this != NULL )
 153         {
 154                 this->process = filter_process;
 155                 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "delta", "14" );
 156                 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "every", "20" );
 157                 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "brightnessdelta_up" , "20" );
 158                 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "brightnessdelta_down" , "30" );
 159                 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "brightnessdelta_every" , "70" );
 160                 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "unevendevelop_up" , "60" );
 161                 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "unevendevelop_down" , "20" );
 162                 mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "unevendevelop_duration" , "70" );
 163         }
 164         return this;
 165 }
 166