git.sesse.net Git - mlt/blob - src/modules/xml/consumer_xml.c

   1 /*
   2  * consumer_xml.c -- a libxml2 serialiser of mlt service networks
   3  * Copyright (C) 2003-2009 Ushodaya Enterprises Limited
   4  * Author: Dan Dennedy <dan@dennedy.org>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <framework/mlt.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26 #include <locale.h>
  27 #include <libxml/tree.h>
  28
  29 #define ID_SIZE 128
  30
  31 #define _x (const xmlChar*)
  32 #define _s (const char*)
  33
  34 // This maintains counters for adding ids to elements
  35 struct serialise_context_s
  36 {
  37         mlt_properties id_map;
  38         int producer_count;
  39         int multitrack_count;
  40         int playlist_count;
  41         int tractor_count;
  42         int filter_count;
  43         int transition_count;
  44         int pass;
  45         mlt_properties hide_map;
  46         char *root;
  47         char *store;
  48 };
  49 typedef struct serialise_context_s* serialise_context;
  50
  51 /** Forward references to static functions.
  52 */
  53
  54 static int consumer_start( mlt_consumer parent );
  55 static int consumer_is_stopped( mlt_consumer this );
  56 static void serialise_service( serialise_context context, mlt_service service, xmlNode *node );
  57
  58 typedef enum
  59 {
  60         xml_existing,
  61         xml_producer,
  62         xml_multitrack,
  63         xml_playlist,
  64         xml_tractor,
  65         xml_filter,
  66         xml_transition
  67 }
  68 xml_type;
  69
  70 /** Create or retrieve an id associated to this service.
  71 */
  72
  73 static char *xml_get_id( serialise_context context, mlt_service service, xml_type type )
  74 {
  75         char *id = NULL;
  76         int i = 0;
  77         mlt_properties map = context->id_map;
  78
  79         // Search the map for the service
  80         for ( i = 0; i < mlt_properties_count( map ); i ++ )
  81                 if ( mlt_properties_get_data_at( map, i, NULL ) == service )
  82                         break;
  83
  84         // If the service is not in the map, and the type indicates a new id is needed...
  85         if ( i >= mlt_properties_count( map ) && type != xml_existing )
  86         {
  87                 // Attempt to reuse existing id
  88                 id = mlt_properties_get( MLT_SERVICE_PROPERTIES( service ), "id" );
  89
  90                 // If no id, or the id is used in the map (for another service), then
  91                 // create a new one.
  92                 if ( id == NULL || mlt_properties_get_data( map, id, NULL ) != NULL )
  93                 {
  94                         char temp[ ID_SIZE ];
  95                         do
  96                         {
  97                                 switch( type )
  98                                 {
  99                                         case xml_producer:
 100                                                 sprintf( temp, "producer%d", context->producer_count ++ );
 101                                                 break;
 102                                         case xml_multitrack:
 103                                                 sprintf( temp, "multitrack%d", context->multitrack_count ++ );
 104                                                 break;
 105                                         case xml_playlist:
 106                                                 sprintf( temp, "playlist%d", context->playlist_count ++ );
 107                                                 break;
 108                                         case xml_tractor:
 109                                                 sprintf( temp, "tractor%d", context->tractor_count ++ );
 110                                                 break;
 111                                         case xml_filter:
 112                                                 sprintf( temp, "filter%d", context->filter_count ++ );
 113                                                 break;
 114                                         case xml_transition:
 115                                                 sprintf( temp, "transition%d", context->transition_count ++ );
 116                                                 break;
 117                                         case xml_existing:
 118                                                 // Never gets here
 119                                                 break;
 120                                 }
 121                         }
 122                         while( mlt_properties_get_data( map, temp, NULL ) != NULL );
 123
 124                         // Set the data at the generated name
 125                         mlt_properties_set_data( map, temp, service, 0, NULL, NULL );
 126
 127                         // Get the pointer to the name (i is the end of the list)
 128                         id = mlt_properties_get_name( map, i );
 129                 }
 130                 else
 131                 {
 132                         // Store the existing id in the map
 133                         mlt_properties_set_data( map, id, service, 0, NULL, NULL );
 134                 }
 135         }
 136         else if ( type == xml_existing )
 137         {
 138                 id = mlt_properties_get_name( map, i );
 139         }
 140
 141         return id;
 142 }
 143
 144 /** This is what will be called by the factory - anything can be passed in
 145         via the argument, but keep it simple.
 146 */
 147
 148 mlt_consumer consumer_xml_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
 149 {
 150         // Create the consumer object
 151         mlt_consumer this = calloc( sizeof( struct mlt_consumer_s ), 1 );
 152
 153         // If no malloc'd and consumer init ok
 154         if ( this != NULL && mlt_consumer_init( this, NULL, profile ) == 0 )
 155         {
 156                 // Allow thread to be started/stopped
 157                 this->start = consumer_start;
 158                 this->is_stopped = consumer_is_stopped;
 159
 160                 mlt_properties_set( MLT_CONSUMER_PROPERTIES( this ), "resource", arg );
 161
 162                 // Return the consumer produced
 163                 return this;
 164         }
 165
 166         // malloc or consumer init failed
 167         free( this );
 168
 169         // Indicate failure
 170         return NULL;
 171 }
 172
 173 static void serialise_properties( serialise_context context, mlt_properties properties, xmlNode *node )
 174 {
 175         int i;
 176         xmlNode *p;
 177
 178         // Enumerate the properties
 179         for ( i = 0; i < mlt_properties_count( properties ); i++ )
 180         {
 181                 char *name = mlt_properties_get_name( properties, i );
 182                 if ( name != NULL &&
 183                          name[ 0 ] != '_' &&
 184                          mlt_properties_get_value( properties, i ) != NULL &&
 185                          strcmp( name, "mlt" ) != 0 &&
 186                          strcmp( name, "in" ) != 0 &&
 187                          strcmp( name, "out" ) != 0 &&
 188                          strcmp( name, "id" ) != 0 &&
 189                          strcmp( name, "title" ) != 0 &&
 190                          strcmp( name, "root" ) != 0 &&
 191                          strcmp( name, "width" ) != 0 &&
 192                          strcmp( name, "height" ) != 0 )
 193                 {
 194                         char *value = mlt_properties_get_value( properties, i );
 195                         int rootlen = strlen( context->root );
 196                         if ( rootlen && !strncmp( value, context->root, rootlen ) && value[ rootlen ] == '/' )
 197                                 value += rootlen + 1;
 198                         p = xmlNewTextChild( node, NULL, _x("property"), _x(value) );
 199                         xmlNewProp( p, _x("name"), _x(name) );
 200                 }
 201         }
 202 }
 203
 204 static void serialise_store_properties( serialise_context context, mlt_properties properties, xmlNode *node, const char *store )
 205 {
 206         int i;
 207         xmlNode *p;
 208
 209         // Enumerate the properties
 210         for ( i = 0; store != NULL && i < mlt_properties_count( properties ); i++ )
 211         {
 212                 char *name = mlt_properties_get_name( properties, i );
 213                 if ( !strncmp( name, store, strlen( store ) ) )
 214                 {
 215                         char *value = mlt_properties_get_value( properties, i );
 216                         if ( value != NULL )
 217                         {
 218                                 int rootlen = strlen( context->root );
 219                                 if ( rootlen && !strncmp( value, context->root, rootlen ) && value[ rootlen ] == '/' )
 220                                         value += rootlen + 1;
 221                                 p = xmlNewTextChild( node, NULL, _x("property"), _x(value) );
 222                                 xmlNewProp( p, _x("name"), _x(name) );
 223                         }
 224                 }
 225         }
 226 }
 227
 228 static inline void serialise_service_filters( serialise_context context, mlt_service service, xmlNode *node )
 229 {
 230         int i;
 231         xmlNode *p;
 232         mlt_filter filter = NULL;
 233
 234         // Enumerate the filters
 235         for ( i = 0; ( filter = mlt_producer_filter( MLT_PRODUCER( service ), i ) ) != NULL; i ++ )
 236         {
 237                 mlt_properties properties = MLT_FILTER_PROPERTIES( filter );
 238                 if ( mlt_properties_get_int( properties, "_loader" ) == 0 )
 239                 {
 240                         // Get a new id - if already allocated, do nothing
 241                         char *id = xml_get_id( context, MLT_FILTER_SERVICE( filter ), xml_filter );
 242                         if ( id != NULL )
 243                         {
 244                                 int in = mlt_properties_get_position( properties, "in" );
 245                                 int out = mlt_properties_get_position( properties, "out" );
 246                                 p = xmlNewChild( node, NULL, _x("filter"), NULL );
 247                                 xmlNewProp( p, _x("id"), _x(id) );
 248                                 if ( mlt_properties_get( properties, "title" ) )
 249                                         xmlNewProp( p, _x("title"), _x(mlt_properties_get( properties, "title" )) );
 250                                 if ( in != 0 || out != 0 )
 251                                 {
 252                                         char temp[ 20 ];
 253                                         sprintf( temp, "%d", in );
 254                                         xmlNewProp( p, _x("in"), _x(temp) );
 255                                         sprintf( temp, "%d", out );
 256                                         xmlNewProp( p, _x("out"), _x(temp) );
 257                                 }
 258                                 serialise_properties( context, properties, p );
 259                                 serialise_service_filters( context, MLT_FILTER_SERVICE( filter ), p );
 260                         }
 261                 }
 262         }
 263 }
 264
 265 static void serialise_producer( serialise_context context, mlt_service service, xmlNode *node )
 266 {
 267         xmlNode *child = node;
 268         mlt_service parent = MLT_SERVICE( mlt_producer_cut_parent( MLT_PRODUCER( service ) ) );
 269
 270         if ( context->pass == 0 )
 271         {
 272                 mlt_properties properties = MLT_SERVICE_PROPERTIES( parent );
 273                 // Get a new id - if already allocated, do nothing
 274                 char *id = xml_get_id( context, parent, xml_producer );
 275                 if ( id == NULL )
 276                         return;
 277
 278                 child = xmlNewChild( node, NULL, _x("producer"), NULL );
 279
 280                 // Set the id
 281                 xmlNewProp( child, _x("id"), _x(id) );
 282                 if ( mlt_properties_get( properties, "title" ) )
 283                         xmlNewProp( child, _x("title"), _x(mlt_properties_get( properties, "title" )) );
 284                 xmlNewProp( child, _x("in"), _x(mlt_properties_get( properties, "in" )) );
 285                 xmlNewProp( child, _x("out"), _x(mlt_properties_get( properties, "out" )) );
 286                 serialise_properties( context, properties, child );
 287                 serialise_service_filters( context, service, child );
 288
 289                 // Add producer to the map
 290                 mlt_properties_set_int( context->hide_map, id, mlt_properties_get_int( properties, "hide" ) );
 291         }
 292         else
 293         {
 294                 char *id = xml_get_id( context, parent, xml_existing );
 295                 mlt_properties properties = MLT_SERVICE_PROPERTIES( service );
 296                 xmlNewProp( node, _x("parent"), _x(id) );
 297                 xmlNewProp( node, _x("in"), _x(mlt_properties_get( properties, "in" )) );
 298                 xmlNewProp( node, _x("out"), _x(mlt_properties_get( properties, "out" )) );
 299         }
 300 }
 301
 302 static void serialise_tractor( serialise_context context, mlt_service service, xmlNode *node );
 303
 304 static void serialise_multitrack( serialise_context context, mlt_service service, xmlNode *node )
 305 {
 306         int i;
 307
 308         if ( context->pass == 0 )
 309         {
 310                 // Iterate over the tracks to collect the producers
 311                 for ( i = 0; i < mlt_multitrack_count( MLT_MULTITRACK( service ) ); i++ )
 312                 {
 313                         mlt_producer producer = mlt_producer_cut_parent( mlt_multitrack_track( MLT_MULTITRACK( service ), i ) );
 314                         serialise_service( context, MLT_SERVICE( producer ), node );
 315                 }
 316         }
 317         else
 318         {
 319                 // Get a new id - if already allocated, do nothing
 320                 char *id = xml_get_id( context, service, xml_multitrack );
 321                 if ( id == NULL )
 322                         return;
 323
 324                 // Serialise the tracks
 325                 for ( i = 0; i < mlt_multitrack_count( MLT_MULTITRACK( service ) ); i++ )
 326                 {
 327                         xmlNode *track = xmlNewChild( node, NULL, _x("track"), NULL );
 328                         int hide = 0;
 329                         mlt_producer producer = mlt_multitrack_track( MLT_MULTITRACK( service ), i );
 330                         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 331
 332                         mlt_service parent = MLT_SERVICE( mlt_producer_cut_parent( producer ) );
 333
 334                         char *id = xml_get_id( context, MLT_SERVICE( parent ), xml_existing );
 335                         xmlNewProp( track, _x("producer"), _x(id) );
 336                         if ( mlt_producer_is_cut( producer ) )
 337                         {
 338                                 xmlNewProp( track, _x("in"), _x(mlt_properties_get( properties, "in" )) );
 339                                 xmlNewProp( track, _x("out"), _x(mlt_properties_get( properties, "out" )) );
 340                                 serialise_store_properties( context, MLT_PRODUCER_PROPERTIES( producer ), track, context->store );
 341                                 serialise_store_properties( context, MLT_PRODUCER_PROPERTIES( producer ), track, "meta." );
 342                                 serialise_service_filters( context, MLT_PRODUCER_SERVICE( producer ), track );
 343                         }
 344
 345                         hide = mlt_properties_get_int( context->hide_map, id );
 346                         if ( hide )
 347                                 xmlNewProp( track, _x("hide"), _x( hide == 1 ? "video" : ( hide == 2 ? "audio" : "both" ) ) );
 348                 }
 349                 serialise_service_filters( context, service, node );
 350         }
 351 }
 352
 353 static void serialise_playlist( serialise_context context, mlt_service service, xmlNode *node )
 354 {
 355         int i;
 356         xmlNode *child = node;
 357         mlt_playlist_clip_info info;
 358         mlt_properties properties = MLT_SERVICE_PROPERTIES( service );
 359
 360         if ( context->pass == 0 )
 361         {
 362                 // Get a new id - if already allocated, do nothing
 363                 char *id = xml_get_id( context, service, xml_playlist );
 364                 if ( id == NULL )
 365                         return;
 366
 367                 // Iterate over the playlist entries to collect the producers
 368                 for ( i = 0; i < mlt_playlist_count( MLT_PLAYLIST( service ) ); i++ )
 369                 {
 370                         if ( ! mlt_playlist_get_clip_info( MLT_PLAYLIST( service ), &info, i ) )
 371                         {
 372                                 if ( info.producer != NULL )
 373                                 {
 374                                         mlt_producer producer = mlt_producer_cut_parent( info.producer );
 375                                         char *service_s = mlt_properties_get( MLT_PRODUCER_PROPERTIES( producer ), "mlt_service" );
 376                                         char *resource_s = mlt_properties_get( MLT_PRODUCER_PROPERTIES( producer ), "resource" );
 377                                         if ( resource_s != NULL && !strcmp( resource_s, "<playlist>" ) )
 378                                                 serialise_playlist( context, MLT_SERVICE( producer ), node );
 379                                         else if ( service_s != NULL && strcmp( service_s, "blank" ) != 0 )
 380                                                 serialise_service( context, MLT_SERVICE( producer ), node );
 381                                 }
 382                         }
 383                 }
 384
 385                 child = xmlNewChild( node, NULL, _x("playlist"), NULL );
 386
 387                 // Set the id
 388                 xmlNewProp( child, _x("id"), _x(id) );
 389                 if ( mlt_properties_get( properties, "title" ) )
 390                         xmlNewProp( child, _x("title"), _x(mlt_properties_get( properties, "title" )) );
 391
 392                 // Store application specific properties
 393                 serialise_store_properties( context, properties, child, context->store );
 394                 serialise_store_properties( context, properties, child, "meta." );
 395
 396                 // Add producer to the map
 397                 mlt_properties_set_int( context->hide_map, id, mlt_properties_get_int( properties, "hide" ) );
 398
 399                 // Iterate over the playlist entries
 400                 for ( i = 0; i < mlt_playlist_count( MLT_PLAYLIST( service ) ); i++ )
 401                 {
 402                         if ( ! mlt_playlist_get_clip_info( MLT_PLAYLIST( service ), &info, i ) )
 403                         {
 404                                 mlt_producer producer = mlt_producer_cut_parent( info.producer );
 405                                 char *service_s = mlt_properties_get( MLT_PRODUCER_PROPERTIES( producer ), "mlt_service" );
 406                                 if ( service_s != NULL && strcmp( service_s, "blank" ) == 0 )
 407                                 {
 408                                         char length[ 20 ];
 409                                         length[ 19 ] = '\0';
 410                                         xmlNode *entry = xmlNewChild( child, NULL, _x("blank"), NULL );
 411                                         snprintf( length, 19, "%d", (int)info.frame_count );
 412                                         xmlNewProp( entry, _x("length"), _x(length) );
 413                                 }
 414                                 else
 415                                 {
 416                                         char temp[ 20 ];
 417                                         xmlNode *entry = xmlNewChild( child, NULL, _x("entry"), NULL );
 418                                         id = xml_get_id( context, MLT_SERVICE( producer ), xml_existing );
 419                                         xmlNewProp( entry, _x("producer"), _x(id) );
 420                                         sprintf( temp, "%d", (int)info.frame_in );
 421                                         xmlNewProp( entry, _x("in"), _x(temp) );
 422                                         sprintf( temp, "%d", (int)info.frame_out );
 423                                         xmlNewProp( entry, _x("out"), _x(temp) );
 424                                         if ( info.repeat > 1 )
 425                                         {
 426                                                 sprintf( temp, "%d", info.repeat );
 427                                                 xmlNewProp( entry, _x("repeat"), _x(temp) );
 428                                         }
 429                                         if ( mlt_producer_is_cut( info.cut ) )
 430                                         {
 431                                                 serialise_store_properties( context, MLT_PRODUCER_PROPERTIES( info.cut ), entry, context->store );
 432                                                 serialise_store_properties( context, MLT_PRODUCER_PROPERTIES( info.cut ), entry, "meta." );
 433                                                 serialise_service_filters( context, MLT_PRODUCER_SERVICE( info.cut ), entry );
 434                                         }
 435                                 }
 436                         }
 437                 }
 438
 439                 serialise_service_filters( context, service, child );
 440         }
 441         else if ( xmlStrcmp( node->name, _x("tractor") ) != 0 )
 442         {
 443                 char *id = xml_get_id( context, service, xml_existing );
 444                 xmlNewProp( node, _x("producer"), _x(id) );
 445         }
 446 }
 447
 448 static void serialise_tractor( serialise_context context, mlt_service service, xmlNode *node )
 449 {
 450         xmlNode *child = node;
 451         mlt_properties properties = MLT_SERVICE_PROPERTIES( service );
 452
 453         if ( context->pass == 0 )
 454         {
 455                 // Recurse on connected producer
 456                 serialise_service( context, mlt_service_producer( service ), node );
 457         }
 458         else
 459         {
 460                 // Get a new id - if already allocated, do nothing
 461                 char *id = xml_get_id( context, service, xml_tractor );
 462                 if ( id == NULL )
 463                         return;
 464
 465                 child = xmlNewChild( node, NULL, _x("tractor"), NULL );
 466
 467                 // Set the id
 468                 xmlNewProp( child, _x("id"), _x(id) );
 469                 if ( mlt_properties_get( properties, "title" ) )
 470                         xmlNewProp( child, _x("title"), _x(mlt_properties_get( properties, "title" )) );
 471                 if ( mlt_properties_get( properties, "global_feed" ) )
 472                         xmlNewProp( child, _x("global_feed"), _x(mlt_properties_get( properties, "global_feed" )) );
 473                 xmlNewProp( child, _x("in"), _x(mlt_properties_get( properties, "in" )) );
 474                 xmlNewProp( child, _x("out"), _x(mlt_properties_get( properties, "out" )) );
 475
 476                 // Store application specific properties
 477                 serialise_store_properties( context, MLT_SERVICE_PROPERTIES( service ), child, context->store );
 478                 serialise_store_properties( context, MLT_SERVICE_PROPERTIES( service ), child, "meta." );
 479
 480                 // Recurse on connected producer
 481                 serialise_service( context, mlt_service_producer( service ), child );
 482                 serialise_service_filters( context, service, child );
 483         }
 484 }
 485
 486 static void serialise_filter( serialise_context context, mlt_service service, xmlNode *node )
 487 {
 488         xmlNode *child = node;
 489         mlt_properties properties = MLT_SERVICE_PROPERTIES( service );
 490
 491         // Recurse on connected producer
 492         serialise_service( context, mlt_service_producer( service ), node );
 493
 494         if ( context->pass == 1 )
 495         {
 496                 // Get a new id - if already allocated, do nothing
 497                 char *id = xml_get_id( context, service, xml_filter );
 498                 if ( id == NULL )
 499                         return;
 500
 501                 child = xmlNewChild( node, NULL, _x("filter"), NULL );
 502
 503                 // Set the id
 504                 xmlNewProp( child, _x("id"), _x(id) );
 505                 if ( mlt_properties_get( properties, "title" ) )
 506                         xmlNewProp( child, _x("title"), _x(mlt_properties_get( properties, "title" )) );
 507                 xmlNewProp( child, _x("in"), _x(mlt_properties_get( properties, "in" )) );
 508                 xmlNewProp( child, _x("out"), _x(mlt_properties_get( properties, "out" )) );
 509
 510                 serialise_properties( context, properties, child );
 511                 serialise_service_filters( context, service, child );
 512         }
 513 }
 514
 515 static void serialise_transition( serialise_context context, mlt_service service, xmlNode *node )
 516 {
 517         xmlNode *child = node;
 518         mlt_properties properties = MLT_SERVICE_PROPERTIES( service );
 519
 520         // Recurse on connected producer
 521         serialise_service( context, MLT_SERVICE( MLT_TRANSITION( service )->producer ), node );
 522
 523         if ( context->pass == 1 )
 524         {
 525                 // Get a new id - if already allocated, do nothing
 526                 char *id = xml_get_id( context, service, xml_transition );
 527                 if ( id == NULL )
 528                         return;
 529
 530                 child = xmlNewChild( node, NULL, _x("transition"), NULL );
 531
 532                 // Set the id
 533                 xmlNewProp( child, _x("id"), _x(id) );
 534                 if ( mlt_properties_get( properties, "title" ) )
 535                         xmlNewProp( child, _x("title"), _x(mlt_properties_get( properties, "title" )) );
 536                 xmlNewProp( child, _x("in"), _x(mlt_properties_get( properties, "in" )) );
 537                 xmlNewProp( child, _x("out"), _x(mlt_properties_get( properties, "out" )) );
 538
 539                 serialise_properties( context, properties, child );
 540                 serialise_service_filters( context, service, child );
 541         }
 542 }
 543
 544 static void serialise_service( serialise_context context, mlt_service service, xmlNode *node )
 545 {
 546         // Iterate over consumer/producer connections
 547         while ( service != NULL )
 548         {
 549                 mlt_properties properties = MLT_SERVICE_PROPERTIES( service );
 550                 char *mlt_type = mlt_properties_get( properties, "mlt_type" );
 551
 552                 // Tell about the producer
 553                 if ( strcmp( mlt_type, "producer" ) == 0 )
 554                 {
 555                         char *mlt_service = mlt_properties_get( properties, "mlt_service" );
 556                         if ( mlt_properties_get( properties, "xml" ) == NULL && ( mlt_service != NULL && !strcmp( mlt_service, "tractor" ) ) )
 557                         {
 558                                 context->pass = 0;
 559                                 serialise_tractor( context, service, node );
 560                                 context->pass = 1;
 561                                 serialise_tractor( context, service, node );
 562                                 context->pass = 0;
 563                                 break;
 564                         }
 565                         else
 566                         {
 567                                 serialise_producer( context, service, node );
 568                         }
 569                         if ( mlt_properties_get( properties, "xml" ) != NULL )
 570                                 break;
 571                 }
 572
 573                 // Tell about the framework container producers
 574                 else if ( strcmp( mlt_type, "mlt_producer" ) == 0 )
 575                 {
 576                         char *resource = mlt_properties_get( properties, "resource" );
 577
 578                         // Recurse on multitrack's tracks
 579                         if ( strcmp( resource, "<multitrack>" ) == 0 )
 580                         {
 581                                 serialise_multitrack( context, service, node );
 582                                 break;
 583                         }
 584
 585                         // Recurse on playlist's clips
 586                         else if ( strcmp( resource, "<playlist>" ) == 0 )
 587                         {
 588                                 serialise_playlist( context, service, node );
 589                         }
 590
 591                         // Recurse on tractor's producer
 592                         else if ( strcmp( resource, "<tractor>" ) == 0 )
 593                         {
 594                                 context->pass = 0;
 595                                 serialise_tractor( context, service, node );
 596                                 context->pass = 1;
 597                                 serialise_tractor( context, service, node );
 598                                 context->pass = 0;
 599                                 break;
 600                         }
 601
 602                         // Treat it as a normal producer
 603                         else
 604                         {
 605                                 serialise_producer( context, service, node );
 606                         }
 607                 }
 608
 609                 // Tell about a filter
 610                 else if ( strcmp( mlt_type, "filter" ) == 0 )
 611                 {
 612                         serialise_filter( context, service, node );
 613                         break;
 614                 }
 615
 616                 // Tell about a transition
 617                 else if ( strcmp( mlt_type, "transition" ) == 0 )
 618                 {
 619                         serialise_transition( context, service, node );
 620                         break;
 621                 }
 622
 623                 // Get the next connected service
 624                 service = mlt_service_producer( service );
 625         }
 626 }
 627
 628 xmlDocPtr xml_make_doc( mlt_consumer consumer, mlt_service service )
 629 {
 630         mlt_properties properties = MLT_SERVICE_PROPERTIES( service );
 631         xmlDocPtr doc = xmlNewDoc( _x("1.0") );
 632         xmlNodePtr root = xmlNewNode( NULL, _x("mlt") );
 633         struct serialise_context_s *context = calloc( 1, sizeof( struct serialise_context_s ) );
 634         mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( consumer ) );
 635         char tmpstr[ 32 ];
 636
 637         xmlDocSetRootElement( doc, root );
 638
 639         // Indicate the numeric locale
 640         xmlNewProp( root, _x("LC_NUMERIC"), _x( setlocale( LC_NUMERIC, NULL ) ) );
 641
 642         // If we have root, then deal with it now
 643         if ( mlt_properties_get( properties, "root" ) != NULL )
 644         {
 645                 xmlNewProp( root, _x("root"), _x(mlt_properties_get( properties, "root" )) );
 646                 context->root = strdup( mlt_properties_get( properties, "root" ) );
 647         }
 648         else
 649         {
 650                 context->root = strdup( "" );
 651         }
 652
 653         // Assign the additional 'storage' pattern for properties
 654         context->store = mlt_properties_get( MLT_CONSUMER_PROPERTIES( consumer ), "store" );
 655
 656         // Assign a title property
 657         if ( mlt_properties_get( properties, "title" ) != NULL )
 658                 xmlNewProp( root, _x("title"), _x(mlt_properties_get( properties, "title" )) );
 659         mlt_properties_set_int( properties, "global_feed", 1 );
 660
 661         // Add a profile child element
 662         if ( profile )
 663         {
 664                 xmlNodePtr profile_node = xmlNewChild( root, NULL, _x("profile"), NULL );
 665                 if ( profile->description )
 666                         xmlNewProp( profile_node, _x("description"), _x(profile->description) );
 667                 sprintf( tmpstr, "%d", profile->width );
 668                 xmlNewProp( profile_node, _x("width"), _x(tmpstr) );
 669                 sprintf( tmpstr, "%d", profile->height );
 670                 xmlNewProp( profile_node, _x("height"), _x(tmpstr) );
 671                 sprintf( tmpstr, "%d", profile->progressive );
 672                 xmlNewProp( profile_node, _x("progressive"), _x(tmpstr) );
 673                 sprintf( tmpstr, "%d", profile->sample_aspect_num );
 674                 xmlNewProp( profile_node, _x("sample_aspect_num"), _x(tmpstr) );
 675                 sprintf( tmpstr, "%d", profile->sample_aspect_den );
 676                 xmlNewProp( profile_node, _x("sample_aspect_den"), _x(tmpstr) );
 677                 sprintf( tmpstr, "%d", profile->display_aspect_num );
 678                 xmlNewProp( profile_node, _x("display_aspect_num"), _x(tmpstr) );
 679                 sprintf( tmpstr, "%d", profile->display_aspect_den );
 680                 xmlNewProp( profile_node, _x("display_aspect_den"), _x(tmpstr) );
 681                 sprintf( tmpstr, "%d", profile->frame_rate_num );
 682                 xmlNewProp( profile_node, _x("frame_rate_num"), _x(tmpstr) );
 683                 sprintf( tmpstr, "%d", profile->frame_rate_den );
 684                 xmlNewProp( profile_node, _x("frame_rate_den"), _x(tmpstr) );
 685                 sprintf( tmpstr, "%d", profile->colorspace );
 686                 xmlNewProp( profile_node, _x("colorspace"), _x(tmpstr) );
 687         }
 688
 689         // Construct the context maps
 690         context->id_map = mlt_properties_new();
 691         context->hide_map = mlt_properties_new();
 692
 693         // Ensure producer is a framework producer
 694         mlt_properties_set( MLT_SERVICE_PROPERTIES( service ), "mlt_type", "mlt_producer" );
 695
 696         // In pass one, we serialise the end producers and playlists,
 697         // adding them to a map keyed by address.
 698         serialise_service( context, service, root );
 699
 700         // In pass two, we serialise the tractor and reference the
 701         // producers and playlists
 702         context->pass++;
 703         serialise_service( context, service, root );
 704
 705         // Cleanup resource
 706         mlt_properties_close( context->id_map );
 707         mlt_properties_close( context->hide_map );
 708         free( context->root );
 709         free( context );
 710
 711         return doc;
 712 }
 713
 714 static int consumer_start( mlt_consumer this )
 715 {
 716         xmlDocPtr doc = NULL;
 717
 718         // Get the producer service
 719         mlt_service service = mlt_service_producer( MLT_CONSUMER_SERVICE( this ) );
 720         if ( service != NULL )
 721         {
 722                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
 723                 char *resource =  mlt_properties_get( properties, "resource" );
 724
 725                 // Set the title if provided
 726                 if ( mlt_properties_get( properties, "title" ) )
 727                         mlt_properties_set( MLT_SERVICE_PROPERTIES( service ), "title", mlt_properties_get( properties, "title" ) );
 728                 else if ( mlt_properties_get( MLT_SERVICE_PROPERTIES( service ), "title" ) == NULL )
 729                         mlt_properties_set( MLT_SERVICE_PROPERTIES( service ), "title", "Anonymous Submission" );
 730
 731                 // Check for a root on the consumer properties and pass to service
 732                 if ( mlt_properties_get( properties, "root" ) )
 733                         mlt_properties_set( MLT_SERVICE_PROPERTIES( service ), "root", mlt_properties_get( properties, "root" ) );
 734
 735                 // Specify roots in other cases...
 736                 if ( resource != NULL && mlt_properties_get( properties, "root" ) == NULL )
 737                 {
 738                         // Get the current working directory
 739                         char *cwd = getcwd( NULL, 0 );
 740                         mlt_properties_set( MLT_SERVICE_PROPERTIES( service ), "root", cwd );
 741                         free( cwd );
 742                 }
 743
 744                 // Make the document
 745                 doc = xml_make_doc( this, service );
 746
 747                 // Handle the output
 748                 if ( resource == NULL || !strcmp( resource, "" ) )
 749                 {
 750                         xmlDocFormatDump( stdout, doc, 1 );
 751                 }
 752                 else if ( strchr( resource, '.' ) == NULL )
 753                 {
 754                         xmlChar *buffer = NULL;
 755                         int length = 0;
 756                         xmlDocDumpMemoryEnc( doc, &buffer, &length, "utf-8" );
 757                         mlt_properties_set( properties, resource, _s(buffer) );
 758 #ifdef WIN32
 759                         xmlFreeFunc xmlFree = NULL;
 760                         xmlMemGet( &xmlFree, NULL, NULL, NULL);
 761 #endif
 762                         xmlFree( buffer );
 763                 }
 764                 else
 765                 {
 766                         xmlSaveFormatFileEnc( resource, doc, "utf-8", 1 );
 767                 }
 768
 769                 // Close the document
 770                 xmlFreeDoc( doc );
 771         }
 772
 773         mlt_consumer_stop( this );
 774
 775         mlt_consumer_stopped( this );
 776
 777         return 0;
 778 }
 779
 780 static int consumer_is_stopped( mlt_consumer this )
 781 {
 782         return 1;
 783 }