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