git.sesse.net Git - mlt/blob - src/melt/melt.c

   1 /*
   2  * melt.c -- MLT command line utility
   3  * Copyright (C) 2002-2011 Ushodaya Enterprises Limited
   4  * Authors: Charles Yates <charles.yates@pandora.be>
   5  *          Dan Dennedy <dan@dennedy.org>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software Foundation,
  19  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20  */
  21
  22 #ifndef _GNU_SOURCE
  23 #define _GNU_SOURCE
  24 #endif
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <sched.h>
  29 #include <libgen.h>
  30 #include <limits.h>
  31 #include <unistd.h>
  32
  33 #include <framework/mlt.h>
  34
  35 #if defined(__DARWIN__) || defined(WIN32)
  36 #include <SDL.h>
  37 #endif
  38
  39 #include "io.h"
  40
  41 static void transport_action( mlt_producer producer, char *value )
  42 {
  43         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
  44         mlt_multitrack multitrack = mlt_properties_get_data( properties, "multitrack", NULL );
  45         mlt_consumer consumer = mlt_properties_get_data( properties, "transport_consumer", NULL );
  46         mlt_properties jack = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES( consumer ), "jack_filter", NULL );
  47         mlt_position position = mlt_producer_position( producer );
  48
  49         mlt_properties_set_int( properties, "stats_off", 1 );
  50
  51         if ( strlen( value ) == 1 )
  52         {
  53                 switch( value[ 0 ] )
  54                 {
  55                         case 'q':
  56                         case 'Q':
  57                                 mlt_properties_set_int( properties, "done", 1 );
  58                                 mlt_events_fire( jack, "jack-stop", NULL );
  59                                 break;
  60                         case '0':
  61                                 position = 0;
  62                                 mlt_producer_set_speed( producer, 1 );
  63                                 mlt_producer_seek( producer, position );
  64                                 mlt_consumer_purge( consumer );
  65                                 mlt_events_fire( jack, "jack-seek", &position, NULL );
  66                                 break;
  67                         case '1':
  68                                 mlt_producer_set_speed( producer, -10 );
  69                                 break;
  70                         case '2':
  71                                 mlt_producer_set_speed( producer, -5 );
  72                                 break;
  73                         case '3':
  74                                 mlt_producer_set_speed( producer, -2 );
  75                                 break;
  76                         case '4':
  77                                 mlt_producer_set_speed( producer, -1 );
  78                                 break;
  79                         case '5':
  80                                 mlt_producer_set_speed( producer, 0 );
  81                                 mlt_consumer_purge( consumer );
  82                                 mlt_events_fire( jack, "jack-stop", NULL );
  83                                 break;
  84                         case '6':
  85                         case ' ':
  86                                 if ( !jack || mlt_producer_get_speed( producer ) != 0 )
  87                                         mlt_producer_set_speed( producer, 1 );
  88                                 mlt_consumer_purge( consumer );
  89                                 mlt_events_fire( jack, "jack-start", NULL );
  90                                 break;
  91                         case '7':
  92                                 mlt_producer_set_speed( producer, 2 );
  93                                 break;
  94                         case '8':
  95                                 mlt_producer_set_speed( producer, 5 );
  96                                 break;
  97                         case '9':
  98                                 mlt_producer_set_speed( producer, 10 );
  99                                 break;
 100                         case 'd':
 101                                 if ( multitrack != NULL )
 102                                 {
 103                                         int i = 0;
 104                                         mlt_position last = -1;
 105                                         fprintf( stderr, "\n" );
 106                                         for ( i = 0; 1; i ++ )
 107                                         {
 108                                                 position = mlt_multitrack_clip( multitrack, mlt_whence_relative_start, i );
 109                                                 if ( position == last )
 110                                                         break;
 111                                                 last = position;
 112                                                 fprintf( stderr, "%d: %d\n", i, (int)position );
 113                                         }
 114                                 }
 115                                 break;
 116
 117                         case 'g':
 118                                 if ( multitrack != NULL )
 119                                 {
 120                                         position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, 0 );
 121                                         mlt_producer_seek( producer, position );
 122                                         mlt_consumer_purge( consumer );
 123                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 124                                 }
 125                                 break;
 126                         case 'H':
 127                                 if ( producer != NULL )
 128                                 {
 129                                         position -= mlt_producer_get_fps( producer ) * 60;
 130                                         mlt_consumer_purge( consumer );
 131                                         mlt_producer_seek( producer, position );
 132                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 133                                 }
 134                                 break;
 135                         case 'h':
 136                                 if ( producer != NULL )
 137                                 {
 138                                         position--;
 139                                         mlt_producer_set_speed( producer, 0 );
 140                                         mlt_consumer_purge( consumer );
 141                                         mlt_producer_seek( producer, position );
 142                                         mlt_events_fire( jack, "jack-stop", NULL );
 143                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 144                                 }
 145                                 break;
 146                         case 'j':
 147                                 if ( multitrack != NULL )
 148                                 {
 149                                         position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, 1 );
 150                                         mlt_consumer_purge( consumer );
 151                                         mlt_producer_seek( producer, position );
 152                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 153                                 }
 154                                 break;
 155                         case 'k':
 156                                 if ( multitrack != NULL )
 157                                 {
 158                                         position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, -1 );
 159                                         mlt_consumer_purge( consumer );
 160                                         mlt_producer_seek( producer, position );
 161                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 162                                 }
 163                                 break;
 164                         case 'l':
 165                                 if ( producer != NULL )
 166                                 {
 167                                         position++;
 168                                         mlt_consumer_purge( consumer );
 169                                         if ( mlt_producer_get_speed( producer ) != 0 )
 170                                         {
 171                                                 mlt_producer_set_speed( producer, 0 );
 172                                                 mlt_events_fire( jack, "jack-stop", NULL );
 173                                         }
 174                                         else
 175                                         {
 176                                                 mlt_producer_seek( producer, position );
 177                                                 mlt_events_fire( jack, "jack-seek", &position, NULL );
 178                                         }
 179                                 }
 180                                 break;
 181                         case 'L':
 182                                 if ( producer != NULL )
 183                                 {
 184                                         position += mlt_producer_get_fps( producer ) * 60;
 185                                         mlt_consumer_purge( consumer );
 186                                         mlt_producer_seek( producer, position );
 187                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 188                                 }
 189                                 break;
 190                 }
 191
 192                 mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 );
 193         }
 194
 195         mlt_properties_set_int( properties, "stats_off", 0 );
 196 }
 197
 198 static void on_jack_started( mlt_properties owner, mlt_consumer consumer, mlt_position *position )
 199 {
 200         mlt_producer producer = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES(consumer), "transport_producer", NULL );
 201         if ( producer )
 202         {
 203                 if ( mlt_producer_get_speed( producer ) != 0 )
 204                 {
 205                         mlt_properties jack = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES( consumer ), "jack_filter", NULL );
 206                         mlt_events_fire( jack, "jack-stop", NULL );
 207                 }
 208                 else
 209                 {
 210                         mlt_producer_set_speed( producer, 1 );
 211                         mlt_consumer_purge( consumer );
 212                         mlt_producer_seek( producer, *position );
 213                         mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 );
 214                 }
 215         }
 216 }
 217
 218 static void on_jack_stopped( mlt_properties owner, mlt_consumer consumer, mlt_position *position )
 219 {
 220         mlt_producer producer = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES(consumer), "transport_producer", NULL );
 221         if ( producer )
 222         {
 223                 mlt_producer_set_speed( producer, 0 );
 224                 mlt_consumer_purge( consumer );
 225                 mlt_producer_seek( producer, *position );
 226                 mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 );
 227         }
 228 }
 229
 230 static void setup_jack_transport( mlt_consumer consumer, mlt_profile profile )
 231 {
 232         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 233         mlt_filter jack = mlt_factory_filter( profile, "jackrack", NULL );
 234         mlt_properties jack_properties = MLT_FILTER_PROPERTIES(jack);
 235
 236         mlt_service_attach( MLT_CONSUMER_SERVICE(consumer), jack );
 237         mlt_properties_set_int( properties, "audio_off", 1 );
 238         mlt_properties_set_data( properties, "jack_filter", jack, 0, (mlt_destructor) mlt_filter_close, NULL );
 239 //      mlt_properties_set( jack_properties, "out_1", "system:playback_1" );
 240 //      mlt_properties_set( jack_properties, "out_2", "system:playback_2" );
 241         mlt_events_listen( jack_properties, consumer, "jack-started", (mlt_listener) on_jack_started );
 242         mlt_events_listen( jack_properties, consumer, "jack-stopped", (mlt_listener) on_jack_stopped );
 243 }
 244
 245 static mlt_consumer create_consumer( mlt_profile profile, char *id )
 246 {
 247         char *myid = id ? strdup( id ) : NULL;
 248         char *arg = myid ? strchr( myid, ':' ) : NULL;
 249         if ( arg != NULL )
 250                 *arg ++ = '\0';
 251         mlt_consumer consumer = mlt_factory_consumer( profile, myid, arg );
 252         if ( consumer != NULL )
 253         {
 254                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 255                 mlt_properties_set_data( properties, "transport_callback", transport_action, 0, NULL, NULL );
 256         }
 257         if ( myid )
 258                 free( myid );
 259         return consumer;
 260 }
 261
 262 static void load_consumer( mlt_consumer *consumer, mlt_profile profile, int argc, char **argv )
 263 {
 264         int i;
 265         int multi = 0;
 266
 267         for ( i = 1; i < argc; i ++ )
 268                 multi += !strcmp( argv[ i ], "-consumer" );
 269
 270         if ( multi )
 271         {
 272                 // If there is more than one -consumer use the 'multi' consumer.
 273                 int k = 0;
 274                 char key[20];
 275
 276                 if ( *consumer )
 277                         mlt_consumer_close( *consumer );
 278                 *consumer = create_consumer( profile, "multi" );
 279                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( *consumer );
 280                 for ( i = 1; i < argc; i ++ )
 281                 {
 282                         if ( !strcmp( argv[ i ], "-consumer" ) )
 283                         {
 284                                 // Create a properties object for each sub-consumer
 285                                 mlt_properties new_props = mlt_properties_new();
 286                                 snprintf( key, sizeof(key), "%d", k++ );
 287                                 mlt_properties_set_data( properties, key, new_props, 0,
 288                                         (mlt_destructor) mlt_properties_close, NULL );
 289                                 mlt_properties_set( new_props, "consumer", argv[ ++i ] );
 290                                 while ( argv[ i + 1 ] != NULL && strstr( argv[ i + 1 ], "=" ) )
 291                                         mlt_properties_parse( new_props, argv[ ++ i ] );
 292                                 mlt_properties_dump( new_props, stderr );
 293                         }
 294                 }
 295         }
 296         else for ( i = 1; i < argc; i ++ )
 297         {
 298                 if ( !strcmp( argv[ i ], "-consumer" ) )
 299                 {
 300                         if ( *consumer )
 301                                 mlt_consumer_close( *consumer );
 302                         *consumer = create_consumer( profile, argv[ ++ i ] );
 303                         if ( *consumer )
 304                         {
 305                                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( *consumer );
 306                                 while ( argv[ i + 1 ] != NULL && strstr( argv[ i + 1 ], "=" ) )
 307                                         mlt_properties_parse( properties, argv[ ++ i ] );
 308                         }
 309                 }
 310         }
 311 }
 312
 313 #if defined(__DARWIN__) || defined(WIN32)
 314
 315 static void event_handling( mlt_producer producer, mlt_consumer consumer )
 316 {
 317         SDL_Event event;
 318
 319         while ( SDL_PollEvent( &event ) )
 320         {
 321                 switch( event.type )
 322                 {
 323                         case SDL_QUIT:
 324                                 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( consumer ), "done", 1 );
 325                                 break;
 326
 327                         case SDL_KEYDOWN:
 328                                 if ( event.key.keysym.unicode < 0x80 && event.key.keysym.unicode > 0 )
 329                                 {
 330                                         char keyboard[ 2 ] = { event.key.keysym.unicode, 0 };
 331                                         transport_action( producer, keyboard );
 332                                 }
 333                                 break;
 334                 }
 335         }
 336 }
 337
 338 #endif
 339
 340 static void transport( mlt_producer producer, mlt_consumer consumer )
 341 {
 342         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 343         int silent = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "silent" );
 344         int progress = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "progress" );
 345         struct timespec tm = { 0, 40000 };
 346         int total_length = mlt_producer_get_length( producer );
 347         int last_position = 0;
 348
 349         if ( mlt_properties_get_int( properties, "done" ) == 0 && !mlt_consumer_is_stopped( consumer ) )
 350         {
 351                 if ( !silent && !progress )
 352                 {
 353                         term_init( );
 354
 355                         fprintf( stderr, "+-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+\n" );
 356                         fprintf( stderr, "|1=-10| |2= -5| |3= -2| |4= -1| |5=  0| |6=  1| |7=  2| |8=  5| |9= 10|\n" );
 357                         fprintf( stderr, "+-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+\n" );
 358
 359                         fprintf( stderr, "+---------------------------------------------------------------------+\n" );
 360                         fprintf( stderr, "|               H = back 1 minute,  L = forward 1 minute              |\n" );
 361                         fprintf( stderr, "|                 h = previous frame,  l = next frame                 |\n" );
 362                         fprintf( stderr, "|           g = start of clip, j = next clip, k = previous clip       |\n" );
 363                         fprintf( stderr, "|                0 = restart, q = quit, space = play                  |\n" );
 364                         fprintf( stderr, "+---------------------------------------------------------------------+\n" );
 365                 }
 366
 367                 while( mlt_properties_get_int( properties, "done" ) == 0 && !mlt_consumer_is_stopped( consumer ) )
 368                 {
 369                         int value = ( silent || progress )? -1 : term_read( );
 370
 371                         if ( value != -1 )
 372                         {
 373                                 char string[ 2 ] = { value, 0 };
 374                                 transport_action( producer, string );
 375                         }
 376
 377 #if defined(__DARWIN__) || defined(WIN32)
 378                         event_handling( producer, consumer );
 379 #endif
 380
 381                         if ( !silent && mlt_properties_get_int( properties, "stats_off" ) == 0 )
 382                         {
 383                                 if ( progress )
 384                                 {
 385                                         int current_position = mlt_producer_position( producer );
 386                                         if ( current_position > last_position )
 387                                         {
 388                                                 fprintf( stderr, "Current Frame: %10d, percentage: %10d%c",
 389                                                         current_position, 100 * current_position / total_length,
 390                                                         progress == 2 ? '\n' : '\r' );
 391                                                 last_position = current_position;
 392                                         }
 393                                 }
 394                                 else
 395                                 {
 396                                         fprintf( stderr, "Current Position: %10d\r", (int)mlt_consumer_position( consumer ) );
 397                                 }
 398                         }
 399
 400                         if ( silent || progress )
 401                                 nanosleep( &tm, NULL );
 402                 }
 403
 404                 if ( !silent )
 405                         fprintf( stderr, "\n" );
 406         }
 407 }
 408
 409 static void show_usage( char *program_name )
 410 {
 411         fprintf( stdout,
 412 "Usage: %s [options] [producer [name=value]* ]+\n"
 413 "Options:\n"
 414 "  -attach filter[:arg] [name=value]*       Attach a filter to the output\n"
 415 "  -attach-cut filter[:arg] [name=value]*   Attach a filter to a cut\n"
 416 "  -attach-track filter[:arg] [name=value]* Attach a filter to a track\n"
 417 "  -attach-clip filter[:arg] [name=value]*  Attach a filter to a producer\n"
 418 "  -audio-track | -hide-video               Add an audio-only track\n"
 419 "  -blank frames                            Add blank silence to a track\n"
 420 "  -consumer id[:arg] [name=value]*         Set the consumer (sink)\n"
 421 "  -debug                                   Set the logging level to debug\n"
 422 "  -filter filter[:arg] [name=value]*       Add a filter to the current track\n"
 423 "  -group [name=value]*                     Apply properties repeatedly\n"
 424 "  -help                                    Show this message\n"
 425 "  -jack                                    Enable JACK transport synchronization\n"
 426 "  -join clips                              Join multiple clips into one cut\n"
 427 "  -mix length                              Add a mix between the last two cuts\n"
 428 "  -mixer transition                        Add a transition to the mix\n"
 429 "  -null-track | -hide-track                Add a hidden track\n"
 430 "  -profile name                            Set the processing settings\n"
 431 "  -progress                                Display progress along with position\n"
 432 "  -remove                                  Remove the most recent cut\n"
 433 "  -repeat times                            Repeat the last cut\n"
 434 "  -query                                   List all of the registered services\n"
 435 "  -query \"consumers\" | \"consumer\"=id       List consumers or show info about one\n"
 436 "  -query \"filters\" | \"filter\"=id           List filters or show info about one\n"
 437 "  -query \"producers\" | \"producer\"=id       List producers or show info about one\n"
 438 "  -query \"transitions\" | \"transition\"=id   List transitions, show info about one\n"
 439 "  -query \"profiles\" | \"profile\"=id         List profiles, show info about one\n"
 440 "  -query \"presets\" | \"preset\"=id           List presets, show info about one\n"
 441 "  -query \"formats\"                         List audio/video formats\n"
 442 "  -query \"audio_codecs\"                    List audio codecs\n"
 443 "  -query \"video_codecs\"                    List video codecs\n"
 444 "  -serialise [filename]                    Write the commands to a text file\n"
 445 "  -silent                                  Do not display position/transport\n"
 446 "  -split relative-frame                    Split the last cut into two cuts\n"
 447 "  -swap                                    Rearrange the last two cuts\n"
 448 "  -track                                   Add a track\n"
 449 "  -transition id[:arg] [name=value]*       Add a transition\n"
 450 "  -verbose                                 Set the logging level to verbose\n"
 451 "  -version                                 Show the version and copyright\n"
 452 "  -video-track | -hide-audio               Add a video-only track\n"
 453 "For more help: <http://www.mltframework.org/>\n",
 454         basename( program_name ) );
 455 }
 456
 457 static void query_metadata( mlt_repository repo, mlt_service_type type, const char *typestr, char *id )
 458 {
 459         mlt_properties metadata = mlt_repository_metadata( repo, type, id );
 460         if ( metadata )
 461         {
 462                 char *s = mlt_properties_serialise_yaml( metadata );
 463                 fprintf( stdout, "%s", s );
 464                 free( s );
 465         }
 466         else
 467         {
 468                 fprintf( stdout, "# No metadata for %s \"%s\"\n", typestr, id );
 469         }
 470 }
 471
 472 static int is_service_hidden(mlt_repository repo, mlt_service_type type, const char *service_name )
 473 {
 474         mlt_properties metadata = NULL;
 475         mlt_properties tags = NULL;
 476         metadata = mlt_repository_metadata(repo, type, service_name);
 477
 478         if( metadata )
 479         {
 480                 tags = mlt_properties_get_data( metadata, "tags", NULL );
 481                 if( tags )
 482                 {
 483                         int k;
 484                         for ( k = 0; k < mlt_properties_count( tags ); k++ )
 485                         {
 486                                 const char* value = mlt_properties_get_value(tags, k);
 487                                 if( !strcmp("Hidden", value) )
 488                                 {
 489                                         return 1;
 490                                 }
 491                         }
 492                 }
 493         }
 494         return 0;
 495 }
 496
 497 static void query_services( mlt_repository repo, mlt_service_type type )
 498 {
 499         mlt_properties services = NULL;
 500         const char *typestr = NULL;
 501         switch ( type )
 502         {
 503                 case consumer_type:
 504                         services = mlt_repository_consumers( repo );
 505                         typestr = "consumers";
 506                         break;
 507                 case filter_type:
 508                         services = mlt_repository_filters( repo );
 509                         typestr = "filters";
 510                         break;
 511                 case producer_type:
 512                         services = mlt_repository_producers( repo );
 513                         typestr = "producers";
 514                         break;
 515                 case transition_type:
 516                         services = mlt_repository_transitions( repo );
 517                         typestr = "transitions";
 518                         break;
 519                 default:
 520                         return;
 521         }
 522         fprintf( stdout, "---\n%s:\n", typestr );
 523         if ( services )
 524         {
 525                 int j;
 526                 for ( j = 0; j < mlt_properties_count( services ); j++ )
 527                 {
 528                         const char* service_name = mlt_properties_get_name( services, j );
 529                         if( !is_service_hidden(repo, type, service_name ) )
 530                                 fprintf( stdout, "  - %s\n", service_name );
 531                 }
 532         }
 533         fprintf( stdout, "...\n" );
 534 }
 535
 536 static void query_profiles()
 537 {
 538         mlt_properties profiles = mlt_profile_list();
 539         fprintf( stdout, "---\nprofiles:\n" );
 540         if ( profiles )
 541         {
 542                 int j;
 543                 for ( j = 0; j < mlt_properties_count( profiles ); j++ )
 544                         fprintf( stdout, "  - %s\n", mlt_properties_get_name( profiles, j ) );
 545         }
 546         fprintf( stdout, "...\n" );
 547         mlt_properties_close( profiles );
 548 }
 549
 550 static void query_profile( const char *id )
 551 {
 552         mlt_properties profiles = mlt_profile_list();
 553         mlt_properties profile = mlt_properties_get_data( profiles, id, NULL );
 554         if ( profile )
 555         {
 556                 char *s = mlt_properties_serialise_yaml( profile );
 557                 fprintf( stdout, "%s", s );
 558                 free( s );
 559         }
 560         else
 561         {
 562                 fprintf( stdout, "# No metadata for profile \"%s\"\n", id );
 563         }
 564         mlt_properties_close( profiles );
 565 }
 566
 567 static void query_presets()
 568 {
 569         mlt_properties presets = mlt_repository_presets();
 570         fprintf( stdout, "---\npresets:\n" );
 571         if ( presets )
 572         {
 573                 int j;
 574                 for ( j = 0; j < mlt_properties_count( presets ); j++ )
 575                         fprintf( stdout, "  - %s\n", mlt_properties_get_name( presets, j ) );
 576         }
 577         fprintf( stdout, "...\n" );
 578         mlt_properties_close( presets );
 579 }
 580
 581 static void query_preset( const char *id )
 582 {
 583         mlt_properties presets = mlt_repository_presets();
 584         mlt_properties preset = mlt_properties_get_data( presets, id, NULL );
 585         if ( preset )
 586         {
 587                 char *s = mlt_properties_serialise_yaml( preset );
 588                 fprintf( stdout, "%s", s );
 589                 free( s );
 590         }
 591         else
 592         {
 593                 fprintf( stdout, "# No metadata for preset \"%s\"\n", id );
 594         }
 595         mlt_properties_close( presets );
 596 }
 597
 598 static void query_formats( )
 599 {
 600         mlt_consumer consumer = mlt_factory_consumer( NULL, "avformat", NULL );
 601         if ( consumer )
 602         {
 603                 mlt_properties_set( MLT_CONSUMER_PROPERTIES(consumer), "f", "list" );
 604                 mlt_consumer_start( consumer );
 605                 mlt_consumer_close( consumer );
 606         }
 607         else
 608         {
 609                 fprintf( stdout, "# No formats - failed to load avformat consumer\n" );
 610         }
 611 }
 612
 613 static void query_acodecs( )
 614 {
 615         mlt_consumer consumer = mlt_factory_consumer( NULL, "avformat", NULL );
 616         if ( consumer )
 617         {
 618                 mlt_properties_set( MLT_CONSUMER_PROPERTIES(consumer), "acodec", "list" );
 619                 mlt_consumer_start( consumer );
 620                 mlt_consumer_close( consumer );
 621         }
 622         else
 623         {
 624                 fprintf( stdout, "# No audio codecs - failed to load avformat consumer\n" );
 625         }
 626 }
 627
 628 static void query_vcodecs( )
 629 {
 630         mlt_consumer consumer = mlt_factory_consumer( NULL, "avformat", NULL );
 631         if ( consumer )
 632         {
 633                 mlt_properties_set( MLT_CONSUMER_PROPERTIES(consumer), "vcodec", "list" );
 634                 mlt_consumer_start( consumer );
 635                 mlt_consumer_close( consumer );
 636         }
 637         else
 638         {
 639                 fprintf( stdout, "# No video codecs - failed to load avformat consumer\n" );
 640         }
 641 }
 642
 643 static void on_fatal_error( mlt_properties owner, mlt_consumer consumer )
 644 {
 645         mlt_consumer_stop( consumer );
 646         exit( EXIT_FAILURE );
 647 }
 648
 649 int main( int argc, char **argv )
 650 {
 651         int i;
 652         mlt_consumer consumer = NULL;
 653         mlt_producer melt = NULL;
 654         FILE *store = NULL;
 655         char *name = NULL;
 656         mlt_profile profile = NULL;
 657         int is_progress = 0;
 658         int is_silent = 0;
 659         mlt_profile backup_profile;
 660
 661         // Construct the factory
 662         mlt_repository repo = mlt_factory_init( NULL );
 663
 664 #ifdef WIN32
 665         is_silent = 1;
 666 #endif
 667
 668         for ( i = 1; i < argc; i ++ )
 669         {
 670                 // Check for serialisation switch
 671                 if ( !strcmp( argv[ i ], "-serialise" ) )
 672                 {
 673                         name = argv[ ++ i ];
 674                         if ( name != NULL && strstr( name, ".melt" ) )
 675                                 store = fopen( name, "w" );
 676                         else
 677                         {
 678                                 if ( name == NULL || name[0] == '-' )
 679                                         store = stdout;
 680                                 name = NULL;
 681                         }
 682                 }
 683                 // Look for the profile option
 684                 else if ( !strcmp( argv[ i ], "-profile" ) )
 685                 {
 686                         const char *pname = argv[ ++ i ];
 687                         if ( pname && pname[0] != '-' )
 688                                 profile = mlt_profile_init( pname );
 689                 }
 690                 else if ( !strcmp( argv[ i ], "-progress" ) )
 691                 {
 692                         is_progress = 1;
 693                 }
 694                 else if ( !strcmp( argv[ i ], "-progress2" ) )
 695                 {
 696                         is_progress = 2;
 697                 }
 698                 // Look for the query option
 699                 else if ( !strcmp( argv[ i ], "-query" ) )
 700                 {
 701                         const char *pname = argv[ ++ i ];
 702                         if ( pname && pname[0] != '-' )
 703                         {
 704                                 if ( !strcmp( pname, "consumers" ) || !strcmp( pname, "consumer" ) )
 705                                         query_services( repo, consumer_type );
 706                                 else if ( !strcmp( pname, "filters" ) || !strcmp( pname, "filter" ) )
 707                                         query_services( repo, filter_type );
 708                                 else if ( !strcmp( pname, "producers" ) || !strcmp( pname, "producer" ) )
 709                                         query_services( repo, producer_type );
 710                                 else if ( !strcmp( pname, "transitions" ) || !strcmp( pname, "transition" ) )
 711                                         query_services( repo, transition_type );
 712                                 else if ( !strcmp( pname, "profiles" ) || !strcmp( pname, "profile" ) )
 713                                         query_profiles();
 714                                 else if ( !strcmp( pname, "presets" ) || !strcmp( pname, "preset" ) )
 715                                         query_presets();
 716                                 else if ( !strncmp( pname, "format", 6 ) )
 717                                         query_formats();
 718                                 else if ( !strncmp( pname, "acodec", 6 ) || !strcmp( pname, "audio_codecs" ) )
 719                                         query_acodecs();
 720                                 else if ( !strncmp( pname, "vcodec", 6 ) || !strcmp( pname, "video_codecs" ) )
 721                                         query_vcodecs();
 722
 723                                 else if ( !strncmp( pname, "consumer=", 9 ) )
 724                                         query_metadata( repo, consumer_type, "consumer", strchr( pname, '=' ) + 1 );
 725                                 else if ( !strncmp( pname, "filter=", 7 ) )
 726                                         query_metadata( repo, filter_type, "filter", strchr( pname, '=' ) + 1 );
 727                                 else if ( !strncmp( pname, "producer=", 9 ) )
 728                                         query_metadata( repo, producer_type, "producer", strchr( pname, '=' ) + 1 );
 729                                 else if ( !strncmp( pname, "transition=", 11 ) )
 730                                         query_metadata( repo, transition_type, "transition", strchr( pname, '=' ) + 1 );
 731                                 else if ( !strncmp( pname, "profile=", 8 ) )
 732                                         query_profile( strchr( pname, '=' ) + 1 );
 733                                 else if ( !strncmp( pname, "preset=", 7 ) )
 734                                         query_preset( strchr( pname, '=' ) + 1 );
 735                                 else
 736                                         goto query_all;
 737                         }
 738                         else
 739                         {
 740 query_all:
 741                                 query_services( repo, consumer_type );
 742                                 query_services( repo, filter_type );
 743                                 query_services( repo, producer_type );
 744                                 query_services( repo, transition_type );
 745                                 fprintf( stdout, "# You can query the metadata for a specific service using:\n"
 746                                         "# -query <type>=<identifer>\n"
 747                                         "# where <type> is one of: consumer, filter, producer, or transition.\n" );
 748                         }
 749                         goto exit_factory;
 750                 }
 751                 else if ( !strcmp( argv[ i ], "-silent" ) )
 752                 {
 753                         is_silent = 1;
 754                 }
 755                 else if ( !strcmp( argv[ i ], "-verbose" ) )
 756                 {
 757                         mlt_log_set_level( MLT_LOG_VERBOSE );
 758                 }
 759                 else if ( !strcmp( argv[ i ], "-version" ) || !strcmp( argv[ i ], "--version" ) )
 760                 {
 761                         fprintf( stdout, "MLT %s " VERSION "\n"
 762                                 "Copyright (C) 2002-2011 Ushodaya Enterprises Limited\n"
 763                                 "<http://www.mltframework.org/>\n"
 764                                 "This is free software; see the source for copying conditions.  There is NO\n"
 765                                 "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n",
 766                                 basename( argv[0] ) );
 767                         goto exit_factory;
 768                 }
 769                 else if ( !strcmp( argv[ i ], "-debug" ) )
 770                 {
 771                         mlt_log_set_level( MLT_LOG_DEBUG );
 772                 }
 773         }
 774         if ( !is_silent && !isatty( STDIN_FILENO ) )
 775                 is_progress = 1;
 776
 777         // Create profile if not set explicitly
 778         if ( getenv( "MLT_PROFILE" ) )
 779                 profile = mlt_profile_init( NULL );
 780         if ( profile == NULL )
 781                 profile = mlt_profile_init( NULL );
 782         else
 783                 profile->is_explicit = 1;
 784
 785         // Look for the consumer option to load profile settings from consumer properties
 786         backup_profile = mlt_profile_clone( profile );
 787         load_consumer( &consumer, profile, argc, argv );
 788
 789         // If the consumer changed the profile, then it is explicit.
 790         if ( backup_profile && !profile->is_explicit && (
 791              profile->width != backup_profile->width ||
 792              profile->height != backup_profile->height ||
 793              profile->sample_aspect_num != backup_profile->sample_aspect_num ||
 794              profile->sample_aspect_den != backup_profile->sample_aspect_den ||
 795              profile->frame_rate_den != backup_profile->frame_rate_den ||
 796              profile->frame_rate_num != backup_profile->frame_rate_num ||
 797              profile->colorspace != backup_profile->colorspace ) )
 798                 profile->is_explicit = 1;
 799         mlt_profile_close( backup_profile );
 800
 801         // Get melt producer
 802         if ( argc > 1 )
 803                 melt = mlt_factory_producer( profile, "melt", &argv[ 1 ] );
 804
 805         if ( melt )
 806         {
 807                 // Generate an automatic profile if needed.
 808                 if ( ! profile->is_explicit )
 809                 {
 810                         mlt_profile_from_producer( profile, melt );
 811                         mlt_producer_close( melt );
 812                         melt = mlt_factory_producer( profile, "melt", &argv[ 1 ] );
 813                 }
 814
 815                 // Reload the consumer with the fully qualified profile.
 816                 // The producer or auto-profile could have changed the profile.
 817                 load_consumer( &consumer, profile, argc, argv );
 818
 819                 // See if producer has consumer already attached
 820                 if ( !store && !consumer )
 821                 {
 822                         consumer = MLT_CONSUMER( mlt_service_consumer( MLT_PRODUCER_SERVICE( melt ) ) );
 823                         if ( consumer )
 824                         {
 825                                 mlt_properties_inc_ref( MLT_CONSUMER_PROPERTIES(consumer) ); // because we explicitly close it
 826                                 mlt_properties_set_data( MLT_CONSUMER_PROPERTIES(consumer),
 827                                         "transport_callback", transport_action, 0, NULL, NULL );
 828                         }
 829                 }
 830
 831                 // If we have no consumer, default to sdl
 832                 if ( store == NULL && consumer == NULL )
 833                         consumer = create_consumer( profile, NULL );
 834         }
 835
 836         // Set transport properties on consumer and produder
 837         if ( consumer != NULL && melt != NULL )
 838         {
 839                 mlt_properties_set_data( MLT_CONSUMER_PROPERTIES( consumer ), "transport_producer", melt, 0, NULL, NULL );
 840                 mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( melt ), "transport_consumer", consumer, 0, NULL, NULL );
 841                 if ( is_progress )
 842                         mlt_properties_set_int(  MLT_CONSUMER_PROPERTIES( consumer ), "progress", is_progress );
 843                 if ( is_silent )
 844                         mlt_properties_set_int(  MLT_CONSUMER_PROPERTIES( consumer ), "silent", is_silent );
 845         }
 846
 847         if ( argc > 1 && melt != NULL && mlt_producer_get_length( melt ) > 0 )
 848         {
 849                 // Parse the arguments
 850                 for ( i = 1; i < argc; i ++ )
 851                 {
 852                         if ( !strcmp( argv[ i ], "-jack" ) )
 853                         {
 854                                 setup_jack_transport( consumer, profile );
 855                         }
 856                         else if ( !strcmp( argv[ i ], "-serialise" ) )
 857                         {
 858                                 if ( store != stdout )
 859                                         i ++;
 860                         }
 861                         else
 862                         {
 863                                 if ( store != NULL )
 864                                         fprintf( store, "%s\n", argv[ i ] );
 865
 866                                 i ++;
 867
 868                                 while ( argv[ i ] != NULL && argv[ i ][ 0 ] != '-' )
 869                                 {
 870                                         if ( store != NULL )
 871                                                 fprintf( store, "%s\n", argv[ i ] );
 872                                         i += 1;
 873                                 }
 874
 875                                 i --;
 876                         }
 877                 }
 878
 879                 if ( consumer != NULL && store == NULL )
 880                 {
 881                         // Get melt's properties
 882                         mlt_properties melt_props = MLT_PRODUCER_PROPERTIES( melt );
 883
 884                         // Get the last group
 885                         mlt_properties group = mlt_properties_get_data( melt_props, "group", 0 );
 886
 887                         // Apply group settings
 888                         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 889                         mlt_properties_inherit( properties, group );
 890
 891                         // Connect consumer to melt
 892                         mlt_consumer_connect( consumer, MLT_PRODUCER_SERVICE( melt ) );
 893
 894                         // Start the consumer
 895                         mlt_events_listen( properties, consumer, "consumer-fatal-error", ( mlt_listener )on_fatal_error );
 896                         if ( mlt_consumer_start( consumer ) == 0 )
 897                         {
 898                                 // Transport functionality
 899                                 transport( melt, consumer );
 900
 901                                 // Stop the consumer
 902                                 mlt_consumer_stop( consumer );
 903                         }
 904                 }
 905                 else if ( store != NULL && store != stdout && name != NULL )
 906                 {
 907                         fprintf( stderr, "Project saved as %s.\n", name );
 908                         fclose( store );
 909                 }
 910         }
 911         else
 912         {
 913                 show_usage( argv[0] );
 914         }
 915
 916         // Disconnect producer from consumer to prevent ref cycles from closing services
 917         if ( consumer )
 918                 mlt_consumer_connect( consumer, NULL );
 919
 920         // Close the producer
 921         if ( melt != NULL )
 922                 mlt_producer_close( melt );
 923
 924         // Close the consumer
 925         if ( consumer != NULL )
 926                 mlt_consumer_close( consumer );
 927
 928         // Close the factory
 929         mlt_profile_close( profile );
 930
 931 exit_factory:
 932
 933         mlt_factory_close( );
 934
 935         return 0;
 936 }