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