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                         char *resource_s = mlt_properties_get( mlt_producer_properties( producer ), "resource" );
 284                         if ( resource_s != NULL && !strcmp( resource_s, "<tractor>" ) )
 285                         {
 286                                 serialise_tractor( context, MLT_SERVICE( producer ), node );
 287                                 context->pass ++;
 288                                 serialise_tractor( context, MLT_SERVICE( producer ), node );
 289                                 context->pass --;
 290                         }
 291                         else
 292                         {
 293                                 serialise_service( context, MLT_SERVICE( producer ), node );
 294                         }
 295                 }
 296         }
 297         else
 298         {
 299                 // Get a new id - if already allocated, do nothing
 300                 char *id = westley_get_id( context, service, westley_multitrack );
 301                 if ( id == NULL )
 302                         return;
 303
 304                 // Serialise the tracks
 305                 for ( i = 0; i < mlt_multitrack_count( MLT_MULTITRACK( service ) ); i++ )
 306                 {
 307                         xmlNode *track = xmlNewChild( node, NULL, "track", NULL );
 308                         int hide = 0;
 309                         mlt_producer producer = mlt_multitrack_track( MLT_MULTITRACK( service ), i );
 310                         mlt_properties properties = mlt_producer_properties( producer );
 311
 312                         mlt_service parent = MLT_SERVICE( mlt_producer_cut_parent( producer ) );
 313
 314                         char *id = westley_get_id( context, MLT_SERVICE( parent ), westley_existing );
 315                         xmlNewProp( track, "producer", id );
 316                         if ( mlt_properties_get_int( properties, "cut" ) == 1 )
 317                         {
 318                                 xmlNewProp( track, "in", mlt_properties_get( properties, "in" ) );
 319                                 xmlNewProp( track, "out", mlt_properties_get( properties, "out" ) );
 320                         }
 321
 322                         hide = mlt_properties_get_int( context->hide_map, id );
 323                         if ( hide )
 324                                 xmlNewProp( track, "hide", hide == 1 ? "video" : ( hide == 2 ? "audio" : "both" ) );
 325                 }
 326                 serialise_service_filters( context, service, node );
 327         }
 328 }
 329
 330 static void serialise_playlist( serialise_context context, mlt_service service, xmlNode *node )
 331 {
 332         int i;
 333         xmlNode *child = node;
 334         mlt_playlist_clip_info info;
 335         mlt_properties properties = mlt_service_properties( service );
 336
 337         if ( context->pass == 0 )
 338         {
 339                 // Get a new id - if already allocated, do nothing
 340                 char *id = westley_get_id( context, service, westley_playlist );
 341                 if ( id == NULL )
 342                         return;
 343
 344                 // Iterate over the playlist entries to collect the producers
 345                 for ( i = 0; i < mlt_playlist_count( MLT_PLAYLIST( service ) ); i++ )
 346                 {
 347                         if ( ! mlt_playlist_get_clip_info( MLT_PLAYLIST( service ), &info, i ) )
 348                         {
 349                                 if ( info.producer != NULL )
 350                                 {
 351                                         mlt_producer producer = mlt_producer_cut_parent( info.producer );
 352                                         char *service_s = mlt_properties_get( mlt_producer_properties( producer ), "mlt_service" );
 353                                         char *resource_s = mlt_properties_get( mlt_producer_properties( producer ), "resource" );
 354                                         if ( resource_s != NULL && !strcmp( resource_s, "<tractor>" ) )
 355                                         {
 356                                                 serialise_tractor( context, MLT_SERVICE( producer ), node );
 357                                                 context->pass ++;
 358                                                 serialise_tractor( context, MLT_SERVICE( producer ), node );
 359                                                 context->pass --;
 360                                         }
 361                                         else if ( service_s != NULL && strcmp( service_s, "blank" ) != 0 )
 362                                                 serialise_service( context, MLT_SERVICE( producer ), node );
 363                                 }
 364                         }
 365                 }
 366
 367                 child = xmlNewChild( node, NULL, "playlist", NULL );
 368
 369                 // Set the id
 370                 xmlNewProp( child, "id", id );
 371
 372                 // Add producer to the map
 373                 mlt_properties_set_int( context->hide_map, id, mlt_properties_get_int( properties, "hide" ) );
 374
 375                 // Iterate over the playlist entries
 376                 for ( i = 0; i < mlt_playlist_count( MLT_PLAYLIST( service ) ); i++ )
 377                 {
 378                         if ( ! mlt_playlist_get_clip_info( MLT_PLAYLIST( service ), &info, i ) )
 379                         {
 380                                 mlt_producer producer = mlt_producer_cut_parent( info.producer );
 381                                 char *service_s = mlt_properties_get( mlt_producer_properties( producer ), "mlt_service" );
 382                                 if ( service_s != NULL && strcmp( service_s, "blank" ) == 0 )
 383                                 {
 384                                         char length[ 20 ];
 385                                         length[ 19 ] = '\0';
 386                                         xmlNode *entry = xmlNewChild( child, NULL, "blank", NULL );
 387                                         snprintf( length, 19, "%d", info.frame_count );
 388                                         xmlNewProp( entry, "length", length );
 389                                 }
 390                                 else
 391                                 {
 392                                         char temp[ 20 ];
 393                                         xmlNode *entry = xmlNewChild( child, NULL, "entry", NULL );
 394                                         id = westley_get_id( context, MLT_SERVICE( producer ), westley_existing );
 395                                         xmlNewProp( entry, "producer", id );
 396                                         sprintf( temp, "%d", info.frame_in );
 397                                         xmlNewProp( entry, "in", temp );
 398                                         sprintf( temp, "%d", info.frame_out );
 399                                         xmlNewProp( entry, "out", temp );
 400                                         if ( mlt_producer_is_cut( info.cut ) )
 401                                                 serialise_service_filters( context, mlt_producer_service( info.cut ), entry );
 402                                 }
 403                         }
 404                 }
 405
 406                 serialise_service_filters( context, service, child );
 407         }
 408         else if ( strcmp( (const char*) node->name, "tractor" ) != 0 )
 409         {
 410                 char *id = westley_get_id( context, service, westley_existing );
 411                 xmlNewProp( node, "producer", id );
 412         }
 413 }
 414
 415 static void serialise_tractor( serialise_context context, mlt_service service, xmlNode *node )
 416 {
 417         xmlNode *child = node;
 418         mlt_properties properties = mlt_service_properties( service );
 419
 420         if ( context->pass == 0 )
 421         {
 422                 // Recurse on connected producer
 423                 serialise_service( context, mlt_service_producer( service ), node );
 424         }
 425         else
 426         {
 427                 // Get a new id - if already allocated, do nothing
 428                 char *id = westley_get_id( context, service, westley_tractor );
 429                 if ( id == NULL )
 430                         return;
 431
 432                 child = xmlNewChild( node, NULL, "tractor", NULL );
 433
 434                 // Set the id
 435                 xmlNewProp( child, "id", id );
 436                 xmlNewProp( child, "in", mlt_properties_get( properties, "in" ) );
 437                 xmlNewProp( child, "out", mlt_properties_get( properties, "out" ) );
 438
 439                 // Recurse on connected producer
 440                 serialise_service( context, mlt_service_producer( service ), child );
 441                 serialise_service_filters( context, service, child );
 442         }
 443 }
 444
 445 static void serialise_filter( serialise_context context, mlt_service service, xmlNode *node )
 446 {
 447         xmlNode *child = node;
 448         mlt_properties properties = mlt_service_properties( service );
 449
 450         // Recurse on connected producer
 451         serialise_service( context, mlt_service_producer( service ), node );
 452
 453         if ( context->pass == 1 )
 454         {
 455                 // Get a new id - if already allocated, do nothing
 456                 char *id = westley_get_id( context, service, westley_filter );
 457                 if ( id == NULL )
 458                         return;
 459
 460                 child = xmlNewChild( node, NULL, "filter", NULL );
 461
 462                 // Set the id
 463                 xmlNewProp( child, "id", id );
 464                 xmlNewProp( child, "in", mlt_properties_get( properties, "in" ) );
 465                 xmlNewProp( child, "out", mlt_properties_get( properties, "out" ) );
 466
 467                 serialise_properties( context, properties, child );
 468                 serialise_service_filters( context, service, child );
 469         }
 470 }
 471
 472 static void serialise_transition( serialise_context context, mlt_service service, xmlNode *node )
 473 {
 474         xmlNode *child = node;
 475         mlt_properties properties = mlt_service_properties( service );
 476
 477         // Recurse on connected producer
 478         serialise_service( context, MLT_SERVICE( MLT_TRANSITION( service )->producer ), node );
 479
 480         if ( context->pass == 1 )
 481         {
 482                 // Get a new id - if already allocated, do nothing
 483                 char *id = westley_get_id( context, service, westley_transition );
 484                 if ( id == NULL )
 485                         return;
 486
 487                 child = xmlNewChild( node, NULL, "transition", NULL );
 488
 489                 // Set the id
 490                 xmlNewProp( child, "id", id );
 491                 xmlNewProp( child, "in", mlt_properties_get( properties, "in" ) );
 492                 xmlNewProp( child, "out", mlt_properties_get( properties, "out" ) );
 493
 494                 serialise_properties( context, properties, child );
 495                 serialise_service_filters( context, service, child );
 496         }
 497 }
 498
 499 static void serialise_service( serialise_context context, mlt_service service, xmlNode *node )
 500 {
 501         // Iterate over consumer/producer connections
 502         while ( service != NULL )
 503         {
 504                 mlt_properties properties = mlt_service_properties( service );
 505                 char *mlt_type = mlt_properties_get( properties, "mlt_type" );
 506
 507                 // Tell about the producer
 508                 if ( strcmp( mlt_type, "producer" ) == 0 )
 509                 {
 510                         serialise_producer( context, service, node );
 511                         if ( mlt_properties_get( properties, "westley" ) != NULL )
 512                                 break;
 513                 }
 514
 515                 // Tell about the framework container producers
 516                 else if ( strcmp( mlt_type, "mlt_producer" ) == 0 )
 517                 {
 518                         char *resource = mlt_properties_get( properties, "resource" );
 519
 520                         // Recurse on multitrack's tracks
 521                         if ( strcmp( resource, "<multitrack>" ) == 0 )
 522                         {
 523                                 serialise_multitrack( context, service, node );
 524                                 break;
 525                         }
 526
 527                         // Recurse on playlist's clips
 528                         else if ( strcmp( resource, "<playlist>" ) == 0 )
 529                         {
 530                                 serialise_playlist( context, service, node );
 531                         }
 532
 533                         // Recurse on tractor's producer
 534                         else if ( strcmp( resource, "<tractor>" ) == 0 )
 535                         {
 536                                 serialise_tractor( context, service, node );
 537                                 break;
 538                         }
 539
 540                         // Treat it as a normal producer
 541                         else
 542                         {
 543                                 serialise_producer( context, service, node );
 544                         }
 545                 }
 546
 547                 // Tell about a filter
 548                 else if ( strcmp( mlt_type, "filter" ) == 0 )
 549                 {
 550                         serialise_filter( context, service, node );
 551                         break;
 552                 }
 553
 554                 // Tell about a transition
 555                 else if ( strcmp( mlt_type, "transition" ) == 0 )
 556                 {
 557                         serialise_transition( context, service, node );
 558                         break;
 559                 }
 560
 561                 // Get the next connected service
 562                 service = mlt_service_producer( service );
 563         }
 564 }
 565
 566 xmlDocPtr westley_make_doc( mlt_service service )
 567 {
 568         mlt_properties properties = mlt_service_properties( service );
 569         xmlDocPtr doc = xmlNewDoc( "1.0" );
 570         xmlNodePtr root = xmlNewNode( NULL, "westley" );
 571         struct serialise_context_s *context = calloc( 1, sizeof( struct serialise_context_s ) );
 572
 573         xmlDocSetRootElement( doc, root );
 574
 575         // If we have root, then deal with it now
 576         if ( mlt_properties_get( properties, "root" ) != NULL )
 577         {
 578                 xmlNewProp( root, "root", mlt_properties_get( properties, "root" ) );
 579                 context->root = strdup( mlt_properties_get( properties, "root" ) );
 580         }
 581         else
 582         {
 583                 context->root = strdup( "" );
 584         }
 585
 586         // Assign a title property
 587         if ( mlt_properties_get( properties, "title" ) != NULL )
 588                 xmlNewProp( root, "title", mlt_properties_get( properties, "title" ) );
 589
 590         // Construct the context maps
 591         context->id_map = mlt_properties_new();
 592         context->hide_map = mlt_properties_new();
 593
 594         // Ensure producer is a framework producer
 595         mlt_properties_set( mlt_service_properties( service ), "mlt_type", "mlt_producer" );
 596
 597         // In pass one, we serialise the end producers and playlists,
 598         // adding them to a map keyed by address.
 599         serialise_service( context, service, root );
 600
 601         // In pass two, we serialise the tractor and reference the
 602         // producers and playlists
 603         context->pass++;
 604         serialise_service( context, service, root );
 605
 606         // Cleanup resource
 607         mlt_properties_close( context->id_map );
 608         mlt_properties_close( context->hide_map );
 609         free( context->root );
 610         free( context );
 611
 612         return doc;
 613 }
 614
 615 static int consumer_start( mlt_consumer this )
 616 {
 617         xmlDocPtr doc = NULL;
 618
 619         // Get the producer service
 620         mlt_service service = mlt_service_producer( mlt_consumer_service( this ) );
 621         if ( service != NULL )
 622         {
 623                 mlt_properties properties = mlt_consumer_properties( this );
 624                 char *resource =  mlt_properties_get( properties, "resource" );
 625
 626                 // Set the title if provided
 627                 if ( mlt_properties_get( properties, "title" ) )
 628                         mlt_properties_set( mlt_service_properties( service ), "title", mlt_properties_get( properties, "title" ) );
 629                 else if ( mlt_properties_get( mlt_service_properties( service ), "title" ) == NULL )
 630                         mlt_properties_set( mlt_service_properties( service ), "title", "Anonymous Submission" );
 631
 632                 // Check for a root on the consumer properties and pass to service
 633                 if ( mlt_properties_get( properties, "root" ) )
 634                         mlt_properties_set( mlt_service_properties( service ), "root", mlt_properties_get( properties, "root" ) );
 635
 636                 // Specify roots in other cases...
 637                 if ( resource != NULL && mlt_properties_get( properties, "root" ) == NULL )
 638                 {
 639                         // Get the current working directory
 640                         char *cwd = getcwd( NULL, 0 );
 641                         mlt_properties_set( mlt_service_properties( service ), "root", cwd );
 642                         free( cwd );
 643                 }
 644
 645                 // Make the document
 646                 doc = westley_make_doc( service );
 647
 648                 // Handle the output
 649                 if ( resource == NULL || !strcmp( resource, "" ) )
 650                 {
 651                         xmlDocFormatDump( stdout, doc, 1 );
 652                 }
 653                 else if ( !strcmp( resource, "buffer" ) )
 654                 {
 655                         xmlChar *buffer = NULL;
 656                         int length = 0;
 657                         xmlDocDumpMemory( doc, &buffer, &length );
 658                         mlt_properties_set_data( properties, "buffer", buffer, length, xmlFree, NULL );
 659                 }
 660                 else
 661                 {
 662                         xmlSaveFormatFile( resource, doc, 1 );
 663                 }
 664
 665                 // Close the document
 666                 xmlFreeDoc( doc );
 667         }
 668
 669         mlt_consumer_stop( this );
 670
 671         mlt_consumer_stopped( this );
 672
 673         return 0;
 674 }
 675
 676 static int consumer_is_stopped( mlt_consumer this )
 677 {
 678         return 1;
 679 }