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/types.h>
  27 #include <dirent.h>
  28 #include <dlfcn.h>
  29 #include <stdlib.h>
  30
  31 extern mlt_filter filter_frei0r_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg );
  32 extern mlt_frame filter_process( mlt_filter this, mlt_frame frame );
  33 extern void filter_close( mlt_filter this );
  34 extern void transition_close( mlt_transition this );
  35 extern mlt_frame transition_process( mlt_transition transition, mlt_frame a_frame, mlt_frame b_frame );
  36
  37 static mlt_properties fill_param_info ( mlt_service_type type, const char *service_name, char *name )
  38 {
  39         void* handle=dlopen(name,RTLD_LAZY);
  40         if (!handle) return NULL;
  41         void (*plginfo)(f0r_plugin_info_t*)=dlsym(handle,"f0r_get_plugin_info");
  42         void (*param_info)(f0r_param_info_t*,int param_index)=dlsym(handle,"f0r_get_param_info");
  43         if (!plginfo || !param_info) {
  44                 dlclose(handle);
  45                 return NULL;
  46         }
  47         mlt_properties metadata = mlt_properties_new();
  48         f0r_plugin_info_t info;
  49         char string[48];
  50         int j=0;
  51
  52         plginfo(&info);
  53         snprintf ( string, sizeof(string) , "%d.%d" , info.major_version , info.minor_version );
  54         mlt_properties_set ( metadata, "schema_version" , "0.1" );
  55         mlt_properties_set ( metadata, "title" , info.name );
  56         mlt_properties_set ( metadata, "version", string );
  57         mlt_properties_set ( metadata, "identifier" , service_name );
  58         mlt_properties_set ( metadata, "description" , info.explanation );
  59         mlt_properties_set ( metadata, "creator" , info.author );
  60         switch (type){
  61                 case filter_type:
  62                         mlt_properties_set ( metadata, "type" , "filter" );
  63                         break;
  64                 case transition_type:
  65                         mlt_properties_set ( metadata, "type" , "transition" );
  66                         break;
  67                 default:
  68                         break;
  69         }
  70
  71         mlt_properties parameter = mlt_properties_new ( );
  72         mlt_properties_set_data ( metadata , "parameters" , parameter , 0 , ( mlt_destructor )mlt_properties_close, NULL );
  73         mlt_properties tags = mlt_properties_new ( );
  74         mlt_properties_set_data ( metadata , "tags" , tags , 0 , ( mlt_destructor )mlt_properties_close, NULL );
  75         mlt_properties_set ( tags , "0" , "Video" );
  76
  77         for (j=0;j<info.num_params;j++){
  78                 snprintf ( string , sizeof(string), "%d" , j );
  79                 mlt_properties pnum = mlt_properties_new ( );
  80                 mlt_properties_set_data ( parameter , string , pnum , 0 , ( mlt_destructor )mlt_properties_close, NULL );
  81                 f0r_param_info_t paraminfo;
  82                 param_info(&paraminfo,j);
  83                 mlt_properties_set ( pnum , "identifier" , paraminfo.name );
  84                 mlt_properties_set ( pnum , "title" , paraminfo.name );
  85                 mlt_properties_set ( pnum , "description" , paraminfo.explanation);
  86                 if ( paraminfo.type == F0R_PARAM_DOUBLE ){
  87                         mlt_properties_set ( pnum , "type" , "integer" );
  88                         mlt_properties_set ( pnum , "minimum" , "0" );
  89                         mlt_properties_set ( pnum , "maximum" , "1000" );
  90                         mlt_properties_set ( pnum , "readonly" , "no" );
  91                         mlt_properties_set ( pnum , "widget" , "spinner" );
  92                 }else
  93                 if ( paraminfo.type == F0R_PARAM_BOOL ){
  94                         mlt_properties_set ( pnum , "type" , "boolean" );
  95                         mlt_properties_set ( pnum , "minimum" , "0" );
  96                         mlt_properties_set ( pnum , "maximum" , "1" );
  97                         mlt_properties_set ( pnum , "readonly" , "no" );
  98                 }else
  99                 if ( paraminfo.type == F0R_PARAM_STRING ){
 100                         mlt_properties_set ( pnum , "type" , "string" );
 101                         mlt_properties_set ( pnum , "readonly" , "no" );
 102                 }
 103         }
 104         dlclose(handle);
 105         free(name);
 106
 107         return metadata;
 108 }
 109
 110 static void * load_lib(  mlt_profile profile, mlt_service_type type , void* handle){
 111
 112         int i=0;
 113         void (*f0r_get_plugin_info)(f0r_plugin_info_t*),
 114                 *f0r_construct , *f0r_update , *f0r_destruct,
 115                 (*f0r_get_param_info)(f0r_param_info_t* info, int param_index),
 116                 (*f0r_init)(void) , *f0r_deinit ,
 117                 (*f0r_set_param_value)(f0r_instance_t instance, f0r_param_t param, int param_index),
 118                 (*f0r_get_param_value)(f0r_instance_t instance, f0r_param_t param, int param_index),
 119                 (*f0r_update2) (f0r_instance_t instance, double time,   const uint32_t* inframe1,
 120                   const uint32_t* inframe2,const uint32_t* inframe3, uint32_t* outframe);
 121
 122         if ( ( f0r_construct = dlsym(handle, "f0r_construct") ) &&
 123                                 (f0r_update = dlsym(handle,"f0r_update") ) &&
 124                                 (f0r_destruct = dlsym(handle,"f0r_destruct") ) &&
 125                                 (f0r_get_plugin_info = dlsym(handle,"f0r_get_plugin_info") ) &&
 126                                 (f0r_get_param_info = dlsym(handle,"f0r_get_param_info") ) &&
 127                                 (f0r_set_param_value= dlsym(handle,"f0r_set_param_value" ) ) &&
 128                                 (f0r_get_param_value= dlsym(handle,"f0r_get_param_value" ) ) &&
 129                                 (f0r_init= dlsym(handle,"f0r_init" ) ) &&
 130                                 (f0r_deinit= dlsym(handle,"f0r_deinit" ) )
 131                 ){
 132
 133                 f0r_update2=dlsym(handle,"f0r_update2");
 134
 135                 f0r_plugin_info_t info;
 136                 f0r_get_plugin_info(&info);
 137
 138                 void* ret=NULL;
 139                 mlt_properties properties=NULL;
 140
 141                 if (type == filter_type && info.plugin_type == F0R_PLUGIN_TYPE_FILTER ){
 142                         mlt_filter this = mlt_filter_new( );
 143                         if ( this != NULL )
 144                         {
 145                                 this->process = filter_process;
 146                                 this->close = filter_close;
 147                                 f0r_init();
 148                                 properties=MLT_FILTER_PROPERTIES ( this );
 149
 150                                 for (i=0;i<info.num_params;i++){
 151                                         f0r_param_info_t pinfo;
 152                                         f0r_get_param_info(&pinfo,i);
 153
 154                                 }
 155
 156                                 ret=this;
 157                         }
 158                 }else if (type == transition_type && info.plugin_type == F0R_PLUGIN_TYPE_MIXER2){
 159                         mlt_transition transition = mlt_transition_new( );
 160                         if ( transition != NULL )
 161                         {
 162                                 transition->process = transition_process;
 163                                 transition->close = transition_close;
 164                                 properties=MLT_TRANSITION_PROPERTIES( transition );
 165                                 mlt_properties_set_int(properties, "_transition_type", 1 );
 166
 167                                 ret=transition;
 168                         }
 169                 }
 170                 mlt_properties_set_data(properties, "_dlclose_handle", handle , sizeof (void*) , NULL , NULL );
 171                 mlt_properties_set_data(properties, "_dlclose", dlclose , sizeof (void*) , NULL , NULL );
 172                 mlt_properties_set_data(properties, "f0r_construct", f0r_construct , sizeof(void*),NULL,NULL);
 173                 mlt_properties_set_data(properties, "f0r_update", f0r_update , sizeof(void*),NULL,NULL);
 174                 if (f0r_update2)
 175                         mlt_properties_set_data(properties, "f0r_update2", f0r_update2 , sizeof(void*),NULL,NULL);
 176                 mlt_properties_set_data(properties, "f0r_destruct", f0r_destruct , sizeof(void*),NULL,NULL);
 177                 mlt_properties_set_data(properties, "f0r_get_plugin_info", f0r_get_plugin_info , sizeof(void*),NULL,NULL);
 178                 mlt_properties_set_data(properties, "f0r_get_param_info", f0r_get_param_info , sizeof(void*),NULL,NULL);
 179                 mlt_properties_set_data(properties, "f0r_set_param_value", f0r_set_param_value , sizeof(void*),NULL,NULL);
 180                 mlt_properties_set_data(properties, "f0r_get_param_value", f0r_get_param_value , sizeof(void*),NULL,NULL);
 181
 182
 183                 return ret;
 184         }else{
 185                 printf("some was wrong\n");
 186                 dlerror();
 187         }
 188         return NULL;
 189 }
 190
 191 static void * create_frei0r_item ( mlt_profile profile, mlt_service_type type, const char *id, void *arg){
 192
 193         mlt_tokeniser tokeniser = mlt_tokeniser_init ( );
 194         int dircount=mlt_tokeniser_parse_new (
 195                 tokeniser ,
 196                 getenv("MLT_FREI0R_PLUGIN_PATH") ? getenv("MLT_FREI0R_PLUGIN_PATH") : "/usr/lib/frei0r-1" ,
 197                  ":"
 198         );
 199         void* ret=NULL;
 200         while (dircount--){
 201                 char soname[1024]="";
 202
 203                 char *save_firstptr = NULL;
 204                 char *firstname=strtok_r(strdup(id),".",&save_firstptr);
 205
 206                 firstname=strtok_r(NULL,".",&save_firstptr);
 207                 sprintf(soname,"%s/%s.so", mlt_tokeniser_get_string( tokeniser , dircount ) , firstname );
 208
 209                 if (firstname){
 210
 211                         void* handle=dlopen(soname,RTLD_LAZY);
 212
 213                         if (handle ){
 214                                 ret=load_lib ( profile , type , handle );
 215                         }else{
 216                                 dlerror();
 217                         }
 218                 }
 219         }
 220         mlt_tokeniser_close ( tokeniser );
 221         return ret;
 222 }
 223
 224
 225 MLT_REPOSITORY
 226 {
 227         int i=0;
 228         mlt_tokeniser tokeniser = mlt_tokeniser_init ( );
 229         int dircount=mlt_tokeniser_parse_new (
 230                 tokeniser ,
 231         getenv("MLT_FREI0R_PLUGIN_PATH") ? getenv("MLT_FREI0R_PLUGIN_PATH") : "/usr/lib/frei0r-1" ,
 232                 ":"
 233         );
 234
 235         while (dircount--){
 236
 237                 mlt_properties direntries = mlt_properties_new();
 238                 char* dirname = mlt_tokeniser_get_string ( tokeniser , dircount ) ;
 239                 mlt_properties_dir_list(direntries, dirname ,"*.so",1);
 240
 241                 for (i=0;i<mlt_properties_count(direntries);i++){
 242                         char* name=mlt_properties_get_value(direntries,i);
 243                         char* shortname=name+strlen(dirname)+1;
 244                         char fname[1024]="";
 245
 246                         strcat(fname,dirname);
 247                         strcat(fname,shortname);
 248
 249                         char *save_firstptr = NULL;
 250                         char pluginname[1024]="frei0r.";
 251                         char* firstname = strtok_r ( shortname , "." , &save_firstptr );
 252                         strcat(pluginname,firstname);
 253
 254                         void* handle=dlopen(strcat(name,".so"),RTLD_LAZY);
 255                         if (handle){
 256                                 void (*plginfo)(f0r_plugin_info_t*)=dlsym(handle,"f0r_get_plugin_info");
 257
 258                                 if (plginfo){
 259                                         f0r_plugin_info_t info;
 260                                         plginfo(&info);
 261
 262                                         if (firstname && info.plugin_type==F0R_PLUGIN_TYPE_FILTER){
 263                                                 MLT_REGISTER( filter_type, pluginname, create_frei0r_item );
 264                                                 MLT_REGISTER_METADATA( filter_type, pluginname, fill_param_info, strdup(name) );
 265                                         }
 266                                         else if (firstname && info.plugin_type==F0R_PLUGIN_TYPE_MIXER2 ){
 267                                                 MLT_REGISTER( transition_type, pluginname, create_frei0r_item );
 268                                                 MLT_REGISTER_METADATA( transition_type, pluginname, fill_param_info, strdup(name) );
 269                                         }
 270                                 }
 271                                 dlclose(handle);
 272                         }
 273                 }
 274                 mlt_properties_close(direntries);
 275         }
 276         mlt_tokeniser_close ( tokeniser );
 277 }