research.m1stereo.tv/gitweb/ - melted/blob - src/modules/westley/consumer_westley.c

   1 /*
   2  * consumer_westley.c -- a libxml2 serialiser of mlt service networks
   3  * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
   4  * Author: Dan Dennedy <dan@dennedy.org>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program 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
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include "consumer_westley.h"
  22 #include <framework/mlt.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <pthread.h>
  27 #include <unistd.h>
  28 #include <libxml/tree.h>
  29
  30 #define ID_SIZE 128
  31
  32 // This maintains counters for adding ids to elements
  33 struct serialise_context_s
  34 {
  35         mlt_properties id_map;
  36         int producer_count;
  37         int multitrack_count;
  38         int playlist_count;
  39         int tractor_count;
  40         int filter_count;
  41         int transition_count;
  42         int pass;
  43         mlt_properties hide_map;
  44         char *root;
  45 };
  46 typedef struct serialise_context_s* serialise_context;
  47
  48 /** Forward references to static functions.
  49 */
  50
  51 static int consumer_start( mlt_consumer parent );
  52 static int consumer_is_stopped( mlt_consumer this );
  53 static void serialise_service( serialise_context context, mlt_service service, xmlNode *node );
  54
  55 typedef enum
  56 {
  57         westley_existing,
  58         westley_producer,
  59         westley_multitrack,
  60         westley_playlist,
  61         westley_tractor,
  62         westley_filter,
  63         westley_transition
  64 }
  65 westley_type;
  66
  67 /** Create or retrieve an id associated to this service.
  68 */
  69
  70 static char *westley_get_id( serialise_context context, mlt_service service, westley_type type )
  71 {
  72         char *id = NULL;
  73         int i = 0;
  74         mlt_properties map = context->id_map;
  75
  76         // Search the map for the service
  77         for ( i = 0; i < mlt_properties_count( map ); i ++ )
  78                 if ( mlt_properties_get_data_at( map, i, NULL ) == service )
  79                         break;
  80
  81         // If the service is not in the map, and the type indicates a new id is needed...
  82         if ( i >= mlt_properties_count( map ) && type != westley_existing )
  83         {
  84                 // Attempt to reuse existing id
  85                 id = mlt_properties_get( mlt_service_properties( service ), "id" );
  86
  87                 // If no id, or the id is used in the map (for another service), then
  88                 // create a new one.
  89                 if ( id == NULL || mlt_properties_get_data( map, id, NULL ) != NULL )
  90                 {
  91                         char temp[ ID_SIZE ];
  92                         do
  93                         {
  94                                 switch( type )
  95                                 {
  96                                         case westley_producer:
  97                                                 sprintf( temp, "producer%d", context->producer_count ++ );
  98                                                 break;
  99                                         case westley_multitrack:
 100                                                 sprintf( temp, "multitrack%d", context->multitrack_count ++ );
 101                                                 break;
 102                                         case westley_playlist:
 103                                                 sprintf( temp, "playlist%d", context->playlist_count ++ );
 104                                                 break;
 105                                         case westley_tractor:
 106                                                 sprintf( temp, "tractor%d", context->tractor_count ++ );
 107                                                 break;
 108                                         case westley_filter:
 109                                                 sprintf( temp, "filter%d", context->filter_count ++ );
 110                                                 break;
 111                                         case westley_transition:
 112                                                 sprintf( temp, "transition%d", context->transition_count ++ );
 113                                                 break;
 114                                         case westley_existing:
 115                                                 // Never gets here
 116                                                 break;
 117                                 }
 118                         }
 119                         while( mlt_properties_get_data( map, temp, NULL ) != NULL );
 120
 121                         // Set the data at the generated name
 122                         mlt_properties_set_data( map, temp, service, 0, NULL, NULL );
 123
 124                         // Get the pointer to the name (i is the end of the list)
 125                         id = mlt_properties_get_name( map, i );
 126                 }
 127                 else
 128                 {
 129                         // Store the existing id in the map
 130                         mlt_properties_set_data( map, id, service, 0, NULL, NULL );
 131                 }
 132         }
 133         else if ( type == westley_existing )
 134         {
 135                 id = mlt_properties_get_name( map, i );
 136         }
 137
 138         return id;
 139 }
 140
 141 /** This is what will be called by the factory - anything can be passed in
 142         via the argument, but keep it simple.
 143 */
 144
 145 mlt_consumer consumer_westley_init( char *arg )
 146 {
 147         // Create the consumer object
 148         mlt_consumer this = calloc( sizeof( struct mlt_consumer_s ), 1 );
 149
 150         // If no malloc'd and consumer init ok
 151         if ( this != NULL && mlt_consumer_init( this, NULL ) == 0 )
 152         {
 153                 // Allow thread to be started/stopped
 154                 this->start = consumer_start;
 155                 this->is_stopped = consumer_is_stopped;
 156
 157                 mlt_properties_set( mlt_consumer_properties( this ), "resource", arg );
 158
 159                 // Return the consumer produced
 160                 return this;
 161         }
 162
 163         // malloc or consumer init failed
 164         free( this );
 165
 166         // Indicate failure
 167         return NULL;
 168 }
 169
 170 static inline void serialise_properties( serialise_context context, mlt_properties properties, xmlNode *node )
 171 {
 172         int i;
 173         xmlNode *p;
 174
 175         // Enumerate the properties
 176         for ( i = 0; i < mlt_properties_count( properties ); i++ )
 177         {
 178                 char *name = mlt_properties_get_name( properties, i );
 179                 if ( name != NULL &&
 180                          name[ 0 ] != '_' &&
 181                          mlt_properties_get_value( properties, i ) != NULL &&
 182                          strcmp( name, "westley" ) != 0 &&
 183                          strcmp( name, "in" ) != 0 &&
 184                          strcmp( name, "out" ) != 0 &&
 185                          strcmp( name, "id" ) != 0 &&
 186                          strcmp( name, "root" ) != 0 &&
 187                          strcmp( name, "width" ) != 0 &&
 188                          strcmp( name, "height" ) != 0 )
 189                 {
 190                         char *value = mlt_properties_get_value( properties, i );
 191                         p = xmlNewChild( node, NULL, "property", NULL );
 192                         xmlNewProp( p, "name", mlt_properties_get_name( properties, i ) );
 193                         if ( strcmp( context->root, "" ) && !strncmp( value, context->root, strlen( context->root ) ) )
 194                                 xmlNodeSetContent( p, value + strlen( context->root ) + 1 );
 195                         else
 196                                 xmlNodeSetContent( p, value );
 197                 }
 198         }
 199 }
 200
 201 static inline void serialise_service_filters( serialise_context context, mlt_service service, xmlNode *node )
 202 {
 203         int i;
 204         xmlNode *p;
 205         mlt_filter filter = NULL;
 206
 207         // Enumerate the filters
 208         for ( i = 0; ( filter = mlt_producer_filter( MLT_PRODUCER( service ), i ) ) != NULL; i ++ )
 209         {
 210                 mlt_properties properties = mlt_filter_properties( filter );
 211                 if ( mlt_properties_get_int( properties, "_fezzik" ) == 0 )
 212                 {
 213                         // Get a new id - if already allocated, do nothing
 214                         char *id = westley_get_id( context, mlt_filter_service( filter ), westley_filter );
 215                         if ( id != NULL )
 216                         {
 217                                 int in = mlt_properties_get_position( properties, "in" );
 218                                 int out = mlt_properties_get_position( properties, "out" );
 219                                 p = xmlNewChild( node, NULL, "filter", NULL );
 220                                 xmlNewProp( p, "id", id );
 221                                 if ( in != 0 || out != 0 )
 222                                 {
 223                                         char temp[ 20 ];
 224                                         sprintf( temp, "%d", in );
 225                                         xmlNewProp( p, "in", temp );
 226                                         sprintf( temp, "%d", out );
 227                                         xmlNewProp( p, "out", temp );
 228                                 }
 229                                 serialise_properties( context, properties, p );
 230                                 serialise_service_filters( context, mlt_filter_service( filter ), p );
 231                         }
 232                 }
 233         }
 234 }
 235
 236 static void serialise_producer( serialise_context context, mlt_service service, xmlNode *node )
 237 {
 238         xmlNode *child = node;
 239         mlt_service parent = MLT_SERVICE( mlt_producer_cut_parent( MLT_PRODUCER( service ) ) );
 240
 241         if ( context->pass == 0 )
 242         {
 243                 mlt_properties properties = mlt_service_properties( parent );
 244                 // Get a new id - if already allocated, do nothing
 245                 char *id = westley_get_id( context, parent, westley_producer );
 246                 if ( id == NULL )
 247                         return;
 248
 249                 child = xmlNewChild( node, NULL, "producer", NULL );
 250
 251                 // Set the id
 252                 xmlNewProp( child, "id", id );
 253                 xmlNewProp( child, "in", mlt_properties_get( properties, "in" ) );
 254                 xmlNewProp( child, "out", mlt_properties_get( properties, "out" ) );
 255                 serialise_properties( context, properties, child );
 256                 serialise_service_filters( context, service, child );
 257
 258                 // Add producer to the map
 259                 mlt_properties_set_int( context->hide_map, id, mlt_properties_get_int( properties, "hide" ) );
 260         }
 261         else
 262         {
 263                 char *id = westley_get_id( context, parent, westley_existing );
 264                 mlt_properties properties = mlt_service_properties( service );
 265                 xmlNewProp( node, "parent", id );
 266                 xmlNewProp( node, "in", mlt_properties_get( properties, "in" ) );
 267                 xmlNewProp( node, "out", mlt_properties_get( properties, "out" ) );
 268         }
 269 }
 270
 271 static void serialise_tractor( serialise_context context, mlt_service service, xmlNode *node );
 272
 273 static void serialise_multitrack( serialise_context context, mlt_service service, xmlNode *node )
 274 {
 275         int i;
 276
 277         if ( context->pass == 0 )
 278         {
 279                 // Iterate over the tracks to collect the producers
 280                 for ( i = 0; i < mlt_multitrack_count( MLT_MULTITRACK( service ) ); i++ )
 281                 {
 282                         mlt_producer producer = mlt_producer_cut_parent( mlt_multitrack_track( MLT_MULTITRACK( service ), i ) );
 283                         serialise_service( context, MLT_SERVICE( producer ), node );
 284                 }
 285         }
 286         else
 287         {
 288                 // Get a new id - if already allocated, do nothing
 289                 char *id = westley_get_id( context, service, westley_multitrack );
 290                 if ( id == NULL )
 291                         return;
 292
 293                 // Serialise the tracks
 294                 for ( i = 0; i < mlt_multitrack_count( MLT_MULTITRACK( service ) ); i++ )
 295                 {
 296                         xmlNode *track = xmlNewChild( node, NULL, "track", NULL );
 297                         int hide = 0;
 298                         mlt_producer producer = mlt_multitrack_track( MLT_MULTITRACK( service ), i );
 299                         mlt_properties properties = mlt_producer_properties( producer );
 300
 301                         mlt_service parent = MLT_SERVICE( mlt_producer_cut_parent( producer ) );
 302
 303                         char *id = westley_get_id( context, MLT_SERVICE( parent ), westley_existing );
 304                         xmlNewProp( track, "producer", id );
 305                         if ( mlt_properties_get_int( properties, "_cut" ) == 1 )
 306                         {
 307                                 xmlNewProp( track, "in", mlt_properties_get( properties, "in" ) );
 308                                 xmlNewProp( track, "out", mlt_properties_get( properties, "out" ) );
 309                         }
 310
 311                         hide = mlt_properties_get_int( context->hide_map, id );
 312                         if ( hide )
 313                                 xmlNewProp( track, "hide", hide == 1 ? "video" : ( hide == 2 ? "audio" : "both" ) );
 314                 }
 315                 serialise_service_filters( context, service, node );
 316         }
 317 }
 318
 319 static void serialise_playlist( serialise_context context, mlt_service service, xmlNode *node )
 320 {
 321         int i;
 322         xmlNode *child = node;
 323         mlt_playlist_clip_info info;
 324         mlt_properties properties = mlt_service_properties( service );
 325
 326         if ( context->pass == 0 )
 327         {
 328                 // Get a new id - if already allocated, do nothing
 329                 char *id = westley_get_id( context, service, westley_playlist );
 330                 if ( id == NULL )
 331                         return;
 332
 333                 // Iterate over the playlist entries to collect the producers
 334                 for ( i = 0; i < mlt_playlist_count( MLT_PLAYLIST( service ) ); i++ )
 335                 {
 336                         if ( ! mlt_playlist_get_clip_info( MLT_PLAYLIST( service ), &info, i ) )
 337                         {
 338                                 if ( info.producer != NULL )
 339                                 {
 340                                         mlt_producer producer = mlt_producer_cut_parent( info.producer );
 341                                         char *service_s = mlt_properties_get( mlt_producer_properties( producer ), "mlt_service" );
 342                                         char *resource_s = mlt_properties_get( mlt_producer_properties( producer ), "resource" );
 343                                         if ( resource_s != NULL && !strcmp( resource_s, "<playlist>" ) )
 344                                                 serialise_playlist( context, MLT_SERVICE( producer ), node );
 345                                         else if ( service_s != NULL && strcmp( service_s, "blank" ) != 0 )
 346                                                 serialise_service( context, MLT_SERVICE( producer ), node );
 347                                 }
 348                         }
 349                 }
 350
 351                 child = xmlNewChild( node, NULL, "playlist", NULL );
 352
 353                 // Set the id
 354                 xmlNewProp( child, "id", id );
 355
 356                 // Add producer to the map
 357                 mlt_properties_set_int( context->hide_map, id, mlt_properties_get_int( properties, "hide" ) );
 358
 359                 // Iterate over the playlist entries
 360                 for ( i = 0; i < mlt_playlist_count( MLT_PLAYLIST( service ) ); i++ )
 361                 {
 362                         if ( ! mlt_playlist_get_clip_info( MLT_PLAYLIST( service ), &info, i ) )
 363                         {
 364                                 mlt_producer producer = mlt_producer_cut_parent( info.producer );
 365                                 char *service_s = mlt_properties_get( mlt_producer_properties( producer ), "mlt_service" );
 366                                 if ( service_s != NULL && strcmp( service_s, "blank" ) == 0 )
 367                                 {
 368                                         char length[ 20 ];
 369                                         length[ 19 ] = '\0';
 370                                         xmlNode *entry = xmlNewChild( child, NULL, "blank", NULL );
 371                                         snprintf( length, 19, "%d", info.frame_count );
 372                                         xmlNewProp( entry, "length", length );
 373                                 }
 374                                 else
 375                                 {
 376                                         char temp[ 20 ];
 377                                         xmlNode *entry = xmlNewChild( child, NULL, "entry", NULL );
 378                                         id = westley_get_id( context, MLT_SERVICE( producer ), westley_existing );
 379                                         xmlNewProp( entry, "producer", id );
 380                                         sprintf( temp, "%d", info.frame_in );
 381                                         xmlNewProp( entry, "in", temp );
 382                                         sprintf( temp, "%d", info.frame_out );
 383                                         xmlNewProp( entry, "out", temp );
 384                                         if ( info.repeat > 1 )
 385                                         {
 386                                                 sprintf( temp, "%d", info.repeat );
 387                                                 xmlNewProp( entry, "repeat", temp );
 388                                         }
 389                                         if ( mlt_producer_is_cut( info.cut ) )
 390                                                 serialise_service_filters( context, mlt_producer_service( info.cut ), entry );
 391                                 }
 392                         }
 393                 }
 394
 395                 serialise_service_filters( context, service, child );
 396         }
 397         else if ( strcmp( (const char*) node->name, "tractor" ) != 0 )
 398         {
 399                 char *id = westley_get_id( context, service, westley_existing );
 400                 xmlNewProp( node, "producer", id );
 401         }
 402 }
 403
 404 static void serialise_tractor( serialise_context context, mlt_service service, xmlNode *node )
 405 {
 406         xmlNode *child = node;
 407         mlt_properties properties = mlt_service_properties( service );
 408
 409         if ( context->pass == 0 )
 410         {
 411                 // Recurse on connected producer
 412                 serialise_service( context, mlt_service_producer( service ), node );
 413         }
 414         else
 415         {
 416                 // Get a new id - if already allocated, do nothing
 417                 char *id = westley_get_id( context, service, westley_tractor );
 418                 if ( id == NULL )
 419                         return;
 420
 421                 child = xmlNewChild( node, NULL, "tractor", NULL );
 422
 423                 // Set the id
 424                 xmlNewProp( child, "id", id );
 425                 xmlNewProp( child, "in", mlt_properties_get( properties, "in" ) );
 426                 xmlNewProp( child, "out", mlt_properties_get( properties, "out" ) );
 427
 428                 // Recurse on connected producer
 429                 serialise_service( context, mlt_service_producer( service ), child );
 430                 serialise_service_filters( context, service, child );
 431         }
 432 }
 433
 434 static void serialise_filter( serialise_context context, mlt_service service, xmlNode *node )
 435 {
 436         xmlNode *child = node;
 437         mlt_properties properties = mlt_service_properties( service );
 438
 439         // Recurse on connected producer
 440         serialise_service( context, mlt_service_producer( service ), node );
 441
 442         if ( context->pass == 1 )
 443         {
 444                 // Get a new id - if already allocated, do nothing
 445                 char *id = westley_get_id( context, service, westley_filter );
 446                 if ( id == NULL )
 447                         return;
 448
 449                 child = xmlNewChild( node, NULL, "filter", NULL );
 450
 451                 // Set the id
 452                 xmlNewProp( child, "id", id );
 453                 xmlNewProp( child, "in", mlt_properties_get( properties, "in" ) );
 454                 xmlNewProp( child, "out", mlt_properties_get( properties, "out" ) );
 455
 456                 serialise_properties( context, properties, child );
 457                 serialise_service_filters( context, service, child );
 458         }
 459 }
 460
 461 static void serialise_transition( serialise_context context, mlt_service service, xmlNode *node )
 462 {
 463         xmlNode *child = node;
 464         mlt_properties properties = mlt_service_properties( service );
 465
 466         // Recurse on connected producer
 467         serialise_service( context, MLT_SERVICE( MLT_TRANSITION( service )->producer ), node );
 468
 469         if ( context->pass == 1 )
 470         {
 471                 // Get a new id - if already allocated, do nothing
 472                 char *id = westley_get_id( context, service, westley_transition );
 473                 if ( id == NULL )
 474                         return;
 475
 476                 child = xmlNewChild( node, NULL, "transition", NULL );
 477
 478                 // Set the id
 479                 xmlNewProp( child, "id", id );
 480                 xmlNewProp( child, "in", mlt_properties_get( properties, "in" ) );
 481                 xmlNewProp( child, "out", mlt_properties_get( properties, "out" ) );
 482
 483                 serialise_properties( context, properties, child );
 484                 serialise_service_filters( context, service, child );
 485         }
 486 }
 487
 488 static void serialise_service( serialise_context context, mlt_service service, xmlNode *node )
 489 {
 490         // Iterate over consumer/producer connections
 491         while ( service != NULL )
 492         {
 493                 mlt_properties properties = mlt_service_properties( service );
 494                 char *mlt_type = mlt_properties_get( properties, "mlt_type" );
 495
 496                 // Tell about the producer
 497                 if ( strcmp( mlt_type, "producer" ) == 0 )
 498                 {
 499                         char *mlt_service = mlt_properties_get( properties, "mlt_service" );
 500                         if ( mlt_properties_get( properties, "westley" ) == NULL && !strcmp( mlt_service, "tractor" ) )
 501                         {
 502                                 context->pass = 0;
 503                                 serialise_tractor( context, service, node );
 504                                 context->pass = 1;
 505                                 serialise_tractor( context, service, node );
 506                                 context->pass = 0;
 507                                 break;
 508                         }
 509                         else
 510                         {
 511                                 serialise_producer( context, service, node );
 512                         }
 513                         if ( mlt_properties_get( properties, "westley" ) != NULL )
 514                                 break;
 515                 }
 516
 517                 // Tell about the framework container producers
 518                 else if ( strcmp( mlt_type, "mlt_producer" ) == 0 )
 519                 {
 520                         char *resource = mlt_properties_get( properties, "resource" );
 521
 522                         // Recurse on multitrack's tracks
 523                         if ( strcmp( resource, "<multitrack>" ) == 0 )
 524                         {
 525                                 serialise_multitrack( context, service, node );
 526                                 break;
 527                         }
 528
 529                         // Recurse on playlist's clips
 530                         else if ( strcmp( resource, "<playlist>" ) == 0 )
 531                         {
 532                                 serialise_playlist( context, service, node );
 533                         }
 534
 535                         // Recurse on tractor's producer
 536                         else if ( strcmp( resource, "<tractor>" ) == 0 )
 537                         {
 538                                 context->pass = 0;
 539                                 serialise_tractor( context, service, node );
 540                                 context->pass = 1;
 541                                 serialise_tractor( context, service, node );
 542                                 context->pass = 0;
 543                                 break;
 544                         }
 545
 546                         // Treat it as a normal producer
 547                         else
 548                         {
 549                                 serialise_producer( context, service, node );
 550                         }
 551                 }
 552
 553                 // Tell about a filter
 554                 else if ( strcmp( mlt_type, "filter" ) == 0 )
 555                 {
 556                         serialise_filter( context, service, node );
 557                         break;
 558                 }
 559
 560                 // Tell about a transition
 561                 else if ( strcmp( mlt_type, "transition" ) == 0 )
 562                 {
 563                         serialise_transition( context, service, node );
 564                         break;
 565                 }
 566
 567                 // Get the next connected service
 568                 service = mlt_service_producer( service );
 569         }
 570 }
 571
 572 xmlDocPtr westley_make_doc( mlt_service service )
 573 {
 574         mlt_properties properties = mlt_service_properties( service );
 575         xmlDocPtr doc = xmlNewDoc( "1.0" );
 576         xmlNodePtr root = xmlNewNode( NULL, "westley" );
 577         struct serialise_context_s *context = calloc( 1, sizeof( struct serialise_context_s ) );
 578
 579         xmlDocSetRootElement( doc, root );
 580
 581         // If we have root, then deal with it now
 582         if ( mlt_properties_get( properties, "root" ) != NULL )
 583         {
 584                 xmlNewProp( root, "root", mlt_properties_get( properties, "root" ) );
 585                 context->root = strdup( mlt_properties_get( properties, "root" ) );
 586         }
 587         else
 588         {
 589                 context->root = strdup( "" );
 590         }
 591
 592         // Assign a title property
 593         if ( mlt_properties_get( properties, "title" ) != NULL )
 594                 xmlNewProp( root, "title", mlt_properties_get( properties, "title" ) );
 595
 596         // Construct the context maps
 597         context->id_map = mlt_properties_new();
 598         context->hide_map = mlt_properties_new();
 599
 600         // Ensure producer is a framework producer
 601         mlt_properties_set( mlt_service_properties( service ), "mlt_type", "mlt_producer" );
 602
 603         // In pass one, we serialise the end producers and playlists,
 604         // adding them to a map keyed by address.
 605         serialise_service( context, service, root );
 606
 607         // In pass two, we serialise the tractor and reference the
 608         // producers and playlists
 609         context->pass++;
 610         serialise_service( context, service, root );
 611
 612         // Cleanup resource
 613         mlt_properties_close( context->id_map );
 614         mlt_properties_close( context->hide_map );
 615         free( context->root );
 616         free( context );
 617
 618         return doc;
 619 }
 620
 621 static int consumer_start( mlt_consumer this )
 622 {
 623         xmlDocPtr doc = NULL;
 624
 625         // Get the producer service
 626         mlt_service service = mlt_service_producer( mlt_consumer_service( this ) );
 627         if ( service != NULL )
 628         {
 629                 mlt_properties properties = mlt_consumer_properties( this );
 630                 char *resource =  mlt_properties_get( properties, "resource" );
 631
 632                 // Set the title if provided
 633                 if ( mlt_properties_get( properties, "title" ) )
 634                         mlt_properties_set( mlt_service_properties( service ), "title", mlt_properties_get( properties, "title" ) );
 635                 else if ( mlt_properties_get( mlt_service_properties( service ), "title" ) == NULL )
 636                         mlt_properties_set( mlt_service_properties( service ), "title", "Anonymous Submission" );
 637
 638                 // Check for a root on the consumer properties and pass to service
 639                 if ( mlt_properties_get( properties, "root" ) )
 640                         mlt_properties_set( mlt_service_properties( service ), "root", mlt_properties_get( properties, "root" ) );
 641
 642                 // Specify roots in other cases...
 643                 if ( resource != NULL && mlt_properties_get( properties, "root" ) == NULL )
 644                 {
 645                         // Get the current working directory
 646                         char *cwd = getcwd( NULL, 0 );
 647                         mlt_properties_set( mlt_service_properties( service ), "root", cwd );
 648                         free( cwd );
 649                 }
 650
 651                 // Make the document
 652                 doc = westley_make_doc( service );
 653
 654                 // Handle the output
 655                 if ( resource == NULL || !strcmp( resource, "" ) )
 656                 {
 657                         xmlDocFormatDump( stdout, doc, 1 );
 658                 }
 659                 else if ( strchr( resource, '.' ) == NULL )
 660                 {
 661                         xmlChar *buffer = NULL;
 662                         int length = 0;
 663                         xmlDocDumpMemory( doc, &buffer, &length );
 664                         mlt_properties_set( properties, resource, buffer );
 665                         xmlFree( buffer );
 666                 }
 667                 else
 668                 {
 669                         xmlSaveFormatFile( resource, doc, 1 );
 670                 }
 671
 672                 // Close the document
 673                 xmlFreeDoc( doc );
 674         }
 675
 676         mlt_consumer_stop( this );
 677
 678         mlt_consumer_stopped( this );
 679
 680         return 0;
 681 }
 682
 683 static int consumer_is_stopped( mlt_consumer this )
 684 {
 685         return 1;
 686 }