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

   1 /*
   2  * factory.c -- the factory method interfaces
   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 <string.h>
  21 #include <framework/mlt.h>
  22 #include <frei0r.h>
  23
  24 #include <stddef.h>
  25 #include <stdio.h>
  26 #include <sys/stat.h>
  27 #include <sys/types.h>
  28 #include <dirent.h>
  29 #include <dlfcn.h>
  30 #include <stdlib.h>
  31 #include <limits.h>
  32
  33 #define FREI0R_PLUGIN_PATH "/usr/lib/frei0r-1:/usr/local/lib/frei0r-1:/opt/local/lib/frei0r-1"
  34
  35 extern mlt_filter filter_frei0r_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg );
  36 extern mlt_frame filter_process( mlt_filter this, mlt_frame frame );
  37 extern void filter_close( mlt_filter this );
  38 extern void transition_close( mlt_transition this );
  39 extern mlt_frame transition_process( mlt_transition transition, mlt_frame a_frame, mlt_frame b_frame );
  40
  41 static mlt_properties fill_param_info ( mlt_service_type type, const char *service_name, char *name )
  42 {
  43         char file[ PATH_MAX ];
  44         char servicetype[ 1024 ]="";
  45         struct stat stat_buff;
  46
  47         switch ( type ) {
  48                 case filter_type:
  49                         strcpy ( servicetype , "filter" );
  50                         break;
  51                 case transition_type:
  52                         strcpy ( servicetype , "transition" ) ;
  53                         break;
  54                 default:
  55                         strcpy ( servicetype , "" );
  56         };
  57
  58         snprintf( file, PATH_MAX, "%s/frei0r/%s_%s.yml", mlt_environment( "MLT_DATA" ), servicetype, service_name );
  59         stat(file,&stat_buff);
  60
  61         if (S_ISREG(stat_buff.st_mode)){
  62                 return mlt_properties_parse_yaml( file );
  63         }
  64
  65         void* handle=dlopen(name,RTLD_LAZY);
  66         if (!handle) return NULL;
  67         void (*plginfo)(f0r_plugin_info_t*)=dlsym(handle,"f0r_get_plugin_info");
  68         void (*param_info)(f0r_param_info_t*,int param_index)=dlsym(handle,"f0r_get_param_info");
  69         if (!plginfo || !param_info) {
  70                 dlclose(handle);
  71                 return NULL;
  72         }
  73         mlt_properties metadata = mlt_properties_new();
  74         f0r_plugin_info_t info;
  75         char string[48];
  76         int j=0;
  77
  78         plginfo(&info);
  79         snprintf ( string, sizeof(string) , "%d.%d" , info.major_version , info.minor_version );
  80         mlt_properties_set ( metadata, "schema_version" , "0.1" );
  81         mlt_properties_set ( metadata, "title" , info.name );
  82         mlt_properties_set ( metadata, "version", string );
  83         mlt_properties_set ( metadata, "identifier" , service_name );
  84         mlt_properties_set ( metadata, "description" , info.explanation );
  85         mlt_properties_set ( metadata, "creator" , info.author );
  86         switch (type){
  87                 case filter_type:
  88                         mlt_properties_set ( metadata, "type" , "filter" );
  89                         break;
  90                 case transition_type:
  91                         mlt_properties_set ( metadata, "type" , "transition" );
  92                         break;
  93                 default:
  94                         break;
  95         }
  96
  97         mlt_properties parameter = mlt_properties_new ( );
  98         mlt_properties_set_data ( metadata , "parameters" , parameter , 0 , ( mlt_destructor )mlt_properties_close, NULL );
  99         mlt_properties tags = mlt_properties_new ( );
 100         mlt_properties_set_data ( metadata , "tags" , tags , 0 , ( mlt_destructor )mlt_properties_close, NULL );
 101         mlt_properties_set ( tags , "0" , "Video" );
 102
 103         for (j=0;j<info.num_params;j++){
 104                 snprintf ( string , sizeof(string), "%d" , j );
 105                 mlt_properties pnum = mlt_properties_new ( );
 106                 mlt_properties_set_data ( parameter , string , pnum , 0 , ( mlt_destructor )mlt_properties_close, NULL );
 107                 f0r_param_info_t paraminfo;
 108                 param_info(&paraminfo,j);
 109                 mlt_properties_set ( pnum , "identifier" , paraminfo.name );
 110                 mlt_properties_set ( pnum , "title" , paraminfo.name );
 111                 mlt_properties_set ( pnum , "description" , paraminfo.explanation);
 112                 if ( paraminfo.type == F0R_PARAM_DOUBLE ){
 113                         mlt_properties_set ( pnum , "type" , "float" );
 114                         mlt_properties_set ( pnum , "minimum" , "0" );
 115                         mlt_properties_set ( pnum , "maximum" , "1" );
 116                         mlt_properties_set ( pnum , "readonly" , "no" );
 117                         mlt_properties_set ( pnum , "widget" , "spinner" );
 118                 }else
 119                 if ( paraminfo.type == F0R_PARAM_BOOL ){
 120                         mlt_properties_set ( pnum , "type" , "boolean" );
 121                         mlt_properties_set ( pnum , "minimum" , "0" );
 122                         mlt_properties_set ( pnum , "maximum" , "1" );
 123                         mlt_properties_set ( pnum , "readonly" , "no" );
 124                 }else
 125                 if ( paraminfo.type == F0R_PARAM_STRING ){
 126                         mlt_properties_set ( pnum , "type" , "string" );
 127                         mlt_properties_set ( pnum , "readonly" , "no" );
 128                 }
 129         }
 130         dlclose(handle);
 131         free(name);
 132
 133         return metadata;
 134 }
 135
 136 static void * load_lib(  mlt_profile profile, mlt_service_type type , void* handle){
 137
 138         int i=0;
 139         void (*f0r_get_plugin_info)(f0r_plugin_info_t*),
 140                 *f0r_construct , *f0r_update , *f0r_destruct,
 141                 (*f0r_get_param_info)(f0r_param_info_t* info, int param_index),
 142                 (*f0r_init)(void) , *f0r_deinit ,
 143                 (*f0r_set_param_value)(f0r_instance_t instance, f0r_param_t param, int param_index),
 144                 (*f0r_get_param_value)(f0r_instance_t instance, f0r_param_t param, int param_index),
 145                 (*f0r_update2) (f0r_instance_t instance, double time,   const uint32_t* inframe1,
 146                   const uint32_t* inframe2,const uint32_t* inframe3, uint32_t* outframe);
 147
 148         if ( ( f0r_construct = dlsym(handle, "f0r_construct") ) &&
 149                                 (f0r_update = dlsym(handle,"f0r_update") ) &&
 150                                 (f0r_destruct = dlsym(handle,"f0r_destruct") ) &&
 151                                 (f0r_get_plugin_info = dlsym(handle,"f0r_get_plugin_info") ) &&
 152                                 (f0r_get_param_info = dlsym(handle,"f0r_get_param_info") ) &&
 153                                 (f0r_set_param_value= dlsym(handle,"f0r_set_param_value" ) ) &&
 154                                 (f0r_get_param_value= dlsym(handle,"f0r_get_param_value" ) ) &&
 155                                 (f0r_init= dlsym(handle,"f0r_init" ) ) &&
 156                                 (f0r_deinit= dlsym(handle,"f0r_deinit" ) )
 157                 ){
 158
 159                 f0r_update2=dlsym(handle,"f0r_update2");
 160
 161                 f0r_plugin_info_t info;
 162                 f0r_get_plugin_info(&info);
 163
 164                 void* ret=NULL;
 165                 mlt_properties properties=NULL;
 166
 167                 if (type == filter_type && info.plugin_type == F0R_PLUGIN_TYPE_FILTER ){
 168                         mlt_filter this = mlt_filter_new( );
 169                         if ( this != NULL )
 170                         {
 171                                 this->process = filter_process;
 172                                 this->close = filter_close;
 173                                 f0r_init();
 174                                 properties=MLT_FILTER_PROPERTIES ( this );
 175
 176                                 for (i=0;i<info.num_params;i++){
 177                                         f0r_param_info_t pinfo;
 178                                         f0r_get_param_info(&pinfo,i);
 179
 180                                 }
 181
 182                                 ret=this;
 183                         }
 184                 }else if (type == transition_type && info.plugin_type == F0R_PLUGIN_TYPE_MIXER2){
 185                         mlt_transition transition = mlt_transition_new( );
 186                         if ( transition != NULL )
 187                         {
 188                                 transition->process = transition_process;
 189                                 transition->close = transition_close;
 190                                 properties=MLT_TRANSITION_PROPERTIES( transition );
 191                                 mlt_properties_set_int(properties, "_transition_type", 1 );
 192
 193                                 ret=transition;
 194                         }
 195                 }
 196                 mlt_properties_set_data(properties, "_dlclose_handle", handle , sizeof (void*) , NULL , NULL );
 197                 mlt_properties_set_data(properties, "_dlclose", dlclose , sizeof (void*) , NULL , NULL );
 198                 mlt_properties_set_data(properties, "f0r_construct", f0r_construct , sizeof(void*),NULL,NULL);
 199                 mlt_properties_set_data(properties, "f0r_update", f0r_update , sizeof(void*),NULL,NULL);
 200                 if (f0r_update2)
 201                         mlt_properties_set_data(properties, "f0r_update2", f0r_update2 , sizeof(void*),NULL,NULL);
 202                 mlt_properties_set_data(properties, "f0r_destruct", f0r_destruct , sizeof(void*),NULL,NULL);
 203                 mlt_properties_set_data(properties, "f0r_get_plugin_info", f0r_get_plugin_info , sizeof(void*),NULL,NULL);
 204                 mlt_properties_set_data(properties, "f0r_get_param_info", f0r_get_param_info , sizeof(void*),NULL,NULL);
 205                 mlt_properties_set_data(properties, "f0r_set_param_value", f0r_set_param_value , sizeof(void*),NULL,NULL);
 206                 mlt_properties_set_data(properties, "f0r_get_param_value", f0r_get_param_value , sizeof(void*),NULL,NULL);
 207
 208
 209                 return ret;
 210         }else{
 211                 printf("some was wrong\n");
 212                 dlerror();
 213         }
 214         return NULL;
 215 }
 216
 217 static void * create_frei0r_item ( mlt_profile profile, mlt_service_type type, const char *id, void *arg){
 218
 219         mlt_tokeniser tokeniser = mlt_tokeniser_init ( );
 220         int dircount=mlt_tokeniser_parse_new (
 221                 tokeniser,
 222                 getenv("MLT_FREI0R_PLUGIN_PATH") ? getenv("MLT_FREI0R_PLUGIN_PATH") : FREI0R_PLUGIN_PATH,
 223                  ":"
 224         );
 225         void* ret=NULL;
 226         while (dircount--){
 227                 char soname[1024]="";
 228
 229                 char *save_firstptr = NULL;
 230                 char *firstname=strtok_r(strdup(id),".",&save_firstptr);
 231
 232                 firstname=strtok_r(NULL,".",&save_firstptr);
 233                 sprintf(soname,"%s/%s.so", mlt_tokeniser_get_string( tokeniser , dircount ) , firstname );
 234
 235                 if (firstname){
 236
 237                         void* handle=dlopen(soname,RTLD_LAZY);
 238
 239                         if (handle ){
 240                                 ret=load_lib ( profile , type , handle );
 241                         }else{
 242                                 dlerror();
 243                         }
 244                 }
 245         }
 246         mlt_tokeniser_close ( tokeniser );
 247         return ret;
 248 }
 249
 250
 251 MLT_REPOSITORY
 252 {
 253         int i=0;
 254         mlt_tokeniser tokeniser = mlt_tokeniser_init ( );
 255         int dircount=mlt_tokeniser_parse_new (
 256                 tokeniser ,
 257         getenv("MLT_FREI0R_PLUGIN_PATH") ? getenv("MLT_FREI0R_PLUGIN_PATH") : FREI0R_PLUGIN_PATH,
 258                 ":"
 259         );
 260
 261         while (dircount--){
 262
 263                 mlt_properties direntries = mlt_properties_new();
 264                 char* dirname = mlt_tokeniser_get_string ( tokeniser , dircount ) ;
 265                 mlt_properties_dir_list(direntries, dirname ,"*.so",1);
 266
 267                 for (i=0;i<mlt_properties_count(direntries);i++){
 268                         char* name=mlt_properties_get_value(direntries,i);
 269                         char* shortname=name+strlen(dirname)+1;
 270                         char fname[1024]="";
 271
 272                         strcat(fname,dirname);
 273                         strcat(fname,shortname);
 274
 275                         char *save_firstptr = NULL;
 276                         char pluginname[1024]="frei0r.";
 277                         char* firstname = strtok_r ( shortname , "." , &save_firstptr );
 278                         strcat(pluginname,firstname);
 279
 280                         void* handle=dlopen(strcat(name,".so"),RTLD_LAZY);
 281                         if (handle){
 282                                 void (*plginfo)(f0r_plugin_info_t*)=dlsym(handle,"f0r_get_plugin_info");
 283
 284                                 if (plginfo){
 285                                         f0r_plugin_info_t info;
 286                                         plginfo(&info);
 287
 288                                         if (firstname && info.plugin_type==F0R_PLUGIN_TYPE_FILTER){
 289                                                 MLT_REGISTER( filter_type, pluginname, create_frei0r_item );
 290                                                 MLT_REGISTER_METADATA( filter_type, pluginname, fill_param_info, strdup(name) );
 291                                         }
 292                                         else if (firstname && info.plugin_type==F0R_PLUGIN_TYPE_MIXER2 ){
 293                                                 MLT_REGISTER( transition_type, pluginname, create_frei0r_item );
 294                                                 MLT_REGISTER_METADATA( transition_type, pluginname, fill_param_info, strdup(name) );
 295                                         }
 296                                 }
 297                                 dlclose(handle);
 298                         }
 299                 }
 300                 mlt_properties_close(direntries);
 301         }
 302         mlt_tokeniser_close ( tokeniser );
 303 }