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

   1 /*
   2  * melt.c -- MLT command line utility
   3  * Copyright (C) 2002-2013 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 #include <signal.h>
  33
  34 #include <framework/mlt.h>
  35
  36 #if (defined(__DARWIN__) || defined(WIN32)) && !defined(MELT_NOSDL)
  37 #include <SDL.h>
  38 #endif
  39
  40 #include "io.h"
  41
  42 static mlt_producer melt = NULL;
  43
  44 static void stop_handler(int signum)
  45 {
  46         if ( melt )
  47         {
  48                 mlt_properties properties = MLT_PRODUCER_PROPERTIES( melt );
  49                 mlt_properties_set_int( properties, "done", 1 );
  50         }
  51 }
  52
  53 static void abnormal_exit_handler(int signum)
  54 {
  55         // The process is going down hard. Restore the terminal first.
  56         term_exit();
  57         // Reset the default handler so the core gets dumped.
  58         signal(signum, SIG_DFL);
  59         kill(getpid(), signum);
  60 }
  61
  62 static void transport_action( mlt_producer producer, char *value )
  63 {
  64         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
  65         mlt_multitrack multitrack = mlt_properties_get_data( properties, "multitrack", NULL );
  66         mlt_consumer consumer = mlt_properties_get_data( properties, "transport_consumer", NULL );
  67         mlt_properties jack = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES( consumer ), "jack_filter", NULL );
  68         mlt_position position = producer? mlt_producer_position( producer ) : 0;
  69
  70         mlt_properties_set_int( properties, "stats_off", 1 );
  71
  72         if ( strlen( value ) == 1 )
  73         {
  74                 switch( value[ 0 ] )
  75                 {
  76                         case 'q':
  77                         case 'Q':
  78                                 mlt_properties_set_int( properties, "done", 1 );
  79                                 mlt_events_fire( jack, "jack-stop", NULL );
  80                                 break;
  81                         case '0':
  82                                 position = 0;
  83                                 mlt_producer_set_speed( producer, 1 );
  84                                 mlt_producer_seek( producer, position );
  85                                 mlt_consumer_purge( consumer );
  86                                 mlt_events_fire( jack, "jack-seek", &position, NULL );
  87                                 break;
  88                         case '1':
  89                                 mlt_producer_set_speed( producer, -10 );
  90                                 break;
  91                         case '2':
  92                                 mlt_producer_set_speed( producer, -5 );
  93                                 break;
  94                         case '3':
  95                                 mlt_producer_set_speed( producer, -2 );
  96                                 break;
  97                         case '4':
  98                                 mlt_producer_set_speed( producer, -1 );
  99                                 break;
 100                         case '5':
 101                                 mlt_producer_set_speed( producer, 0 );
 102                                 mlt_consumer_purge( consumer );
 103                                 mlt_events_fire( jack, "jack-stop", NULL );
 104                                 break;
 105                         case '6':
 106                         case ' ':
 107                                 if ( !jack || mlt_producer_get_speed( producer ) != 0 )
 108                                         mlt_producer_set_speed( producer, 1 );
 109                                 mlt_consumer_purge( consumer );
 110                                 mlt_events_fire( jack, "jack-start", NULL );
 111                                 break;
 112                         case '7':
 113                                 mlt_producer_set_speed( producer, 2 );
 114                                 break;
 115                         case '8':
 116                                 mlt_producer_set_speed( producer, 5 );
 117                                 break;
 118                         case '9':
 119                                 mlt_producer_set_speed( producer, 10 );
 120                                 break;
 121                         case 'd':
 122                                 if ( multitrack != NULL )
 123                                 {
 124                                         int i = 0;
 125                                         mlt_position last = -1;
 126                                         fprintf( stderr, "\n" );
 127                                         for ( i = 0; 1; i ++ )
 128                                         {
 129                                                 position = mlt_multitrack_clip( multitrack, mlt_whence_relative_start, i );
 130                                                 if ( position == last )
 131                                                         break;
 132                                                 last = position;
 133                                                 fprintf( stderr, "%d: %d\n", i, (int)position );
 134                                         }
 135                                 }
 136                                 break;
 137
 138                         case 'g':
 139                                 if ( multitrack != NULL )
 140                                 {
 141                                         position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, 0 );
 142                                         mlt_producer_seek( producer, position );
 143                                         mlt_consumer_purge( consumer );
 144                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 145                                 }
 146                                 break;
 147                         case 'H':
 148                                 if ( producer != NULL )
 149                                 {
 150                                         position -= mlt_producer_get_fps( producer ) * 60;
 151                                         mlt_consumer_purge( consumer );
 152                                         mlt_producer_seek( producer, position );
 153                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 154                                 }
 155                                 break;
 156                         case 'h':
 157                                 if ( producer != NULL )
 158                                 {
 159                                         position--;
 160                                         mlt_producer_set_speed( producer, 0 );
 161                                         mlt_consumer_purge( consumer );
 162                                         mlt_producer_seek( producer, position );
 163                                         mlt_events_fire( jack, "jack-stop", NULL );
 164                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 165                                 }
 166                                 break;
 167                         case 'j':
 168                                 if ( multitrack != NULL )
 169                                 {
 170                                         position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, 1 );
 171                                         mlt_consumer_purge( consumer );
 172                                         mlt_producer_seek( producer, position );
 173                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 174                                 }
 175                                 break;
 176                         case 'k':
 177                                 if ( multitrack != NULL )
 178                                 {
 179                                         position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, -1 );
 180                                         mlt_consumer_purge( consumer );
 181                                         mlt_producer_seek( producer, position );
 182                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 183                                 }
 184                                 break;
 185                         case 'l':
 186                                 if ( producer != NULL )
 187                                 {
 188                                         position++;
 189                                         mlt_consumer_purge( consumer );
 190                                         if ( mlt_producer_get_speed( producer ) != 0 )
 191                                         {
 192                                                 mlt_producer_set_speed( producer, 0 );
 193                                                 mlt_events_fire( jack, "jack-stop", NULL );
 194                                         }
 195                                         else
 196                                         {
 197                                                 mlt_producer_seek( producer, position );
 198                                                 mlt_events_fire( jack, "jack-seek", &position, NULL );
 199                                         }
 200                                 }
 201                                 break;
 202                         case 'L':
 203                                 if ( producer != NULL )
 204                                 {
 205                                         position += mlt_producer_get_fps( producer ) * 60;
 206                                         mlt_consumer_purge( consumer );
 207                                         mlt_producer_seek( producer, position );
 208                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 209                                 }
 210                                 break;
 211                 }
 212
 213                 mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 );
 214         }
 215
 216         mlt_properties_set_int( properties, "stats_off", 0 );
 217 }
 218
 219 static void on_jack_started( mlt_properties owner, mlt_consumer consumer, mlt_position *position )
 220 {
 221         mlt_producer producer = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES(consumer), "transport_producer", NULL );
 222         if ( producer )
 223         {
 224                 if ( mlt_producer_get_speed( producer ) != 0 )
 225                 {
 226                         mlt_properties jack = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES( consumer ), "jack_filter", NULL );
 227                         mlt_events_fire( jack, "jack-stop", NULL );
 228                 }
 229                 else
 230                 {
 231                         mlt_producer_set_speed( producer, 1 );
 232                         mlt_consumer_purge( consumer );
 233                         mlt_producer_seek( producer, *position );
 234                         mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 );
 235                 }
 236         }
 237 }
 238
 239 static void on_jack_stopped( mlt_properties owner, mlt_consumer consumer, mlt_position *position )
 240 {
 241         mlt_producer producer = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES(consumer), "transport_producer", NULL );
 242         if ( producer )
 243         {
 244                 mlt_producer_set_speed( producer, 0 );
 245                 mlt_consumer_purge( consumer );
 246                 mlt_producer_seek( producer, *position );
 247                 mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 );
 248         }
 249 }
 250
 251 static void setup_jack_transport( mlt_consumer consumer, mlt_profile profile )
 252 {
 253         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 254         mlt_filter jack = mlt_factory_filter( profile, "jackrack", NULL );
 255         mlt_properties jack_properties = MLT_FILTER_PROPERTIES(jack);
 256
 257         mlt_service_attach( MLT_CONSUMER_SERVICE(consumer), jack );
 258         mlt_properties_set_int( properties, "audio_off", 1 );
 259         mlt_properties_set_data( properties, "jack_filter", jack, 0, (mlt_destructor) mlt_filter_close, NULL );
 260 //      mlt_properties_set( jack_properties, "out_1", "system:playback_1" );
 261 //      mlt_properties_set( jack_properties, "out_2", "system:playback_2" );
 262         mlt_events_listen( jack_properties, consumer, "jack-started", (mlt_listener) on_jack_started );
 263         mlt_events_listen( jack_properties, consumer, "jack-stopped", (mlt_listener) on_jack_stopped );
 264 }
 265
 266 static mlt_consumer create_consumer( mlt_profile profile, char *id )
 267 {
 268         char *myid = id ? strdup( id ) : NULL;
 269         char *arg = myid ? strchr( myid, ':' ) : NULL;
 270         if ( arg != NULL )
 271                 *arg ++ = '\0';
 272         mlt_consumer consumer = mlt_factory_consumer( profile, myid, arg );
 273         if ( consumer != NULL )
 274         {
 275                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 276                 mlt_properties_set_data( properties, "transport_callback", transport_action, 0, NULL, NULL );
 277         }
 278         if ( myid )
 279                 free( myid );
 280         return consumer;
 281 }
 282
 283 static void load_consumer( mlt_consumer *consumer, mlt_profile profile, int argc, char **argv )
 284 {
 285         int i;
 286         int multi = 0;
 287
 288         for ( i = 1; i < argc; i ++ )
 289                 multi += !strcmp( argv[ i ], "-consumer" );
 290
 291         if ( multi > 1 )
 292         {
 293                 // If there is more than one -consumer use the 'multi' consumer.
 294                 int k = 0;
 295                 char key[20];
 296
 297                 if ( *consumer )
 298                         mlt_consumer_close( *consumer );
 299                 *consumer = create_consumer( profile, "multi" );
 300                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( *consumer );
 301                 for ( i = 1; i < argc; i ++ )
 302                 {
 303                         if ( !strcmp( argv[ i ], "-consumer" ) && argv[ i + 1 ])
 304                         {
 305                                 // Create a properties object for each sub-consumer
 306                                 mlt_properties new_props = mlt_properties_new();
 307                                 snprintf( key, sizeof(key), "%d", k++ );
 308                                 mlt_properties_set_data( properties, key, new_props, 0,
 309                                         (mlt_destructor) mlt_properties_close, NULL );
 310                                 if ( strchr( argv[i + 1], ':' ) )
 311                                 {
 312                                         char *temp = strdup( argv[++i] );
 313                                         char *service = temp;
 314                                         char *target = strchr( temp, ':' );
 315                                         *target++ = 0;
 316                                         mlt_properties_set( new_props, "mlt_service", service );
 317                                         mlt_properties_set( new_props, "target", target );
 318                                 }
 319                                 else
 320                                 {
 321                                         mlt_properties_set( new_props, "mlt_service", argv[ ++i ] );
 322                                 }
 323                                 while ( argv[ i + 1 ] && strchr( argv[ i + 1 ], '=' ) )
 324                                         mlt_properties_parse( new_props, argv[ ++ i ] );
 325                         }
 326                 }
 327         }
 328         else for ( i = 1; i < argc; i ++ )
 329         {
 330                 if ( !strcmp( argv[ i ], "-consumer" ) )
 331                 {
 332                         if ( *consumer )
 333                                 mlt_consumer_close( *consumer );
 334                         *consumer = create_consumer( profile, argv[ ++ i ] );
 335                         if ( *consumer )
 336                         {
 337                                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( *consumer );
 338                                 while ( argv[ i + 1 ] != NULL && strchr( argv[ i + 1 ], '=' ) )
 339                                         mlt_properties_parse( properties, argv[ ++ i ] );
 340                         }
 341                 }
 342         }
 343 }
 344
 345 #if (defined(__DARWIN__) || defined(WIN32)) && !defined(MELT_NOSDL)
 346
 347 static void event_handling( mlt_producer producer, mlt_consumer consumer )
 348 {
 349         SDL_Event event;
 350
 351         while ( SDL_PollEvent( &event ) )
 352         {
 353                 switch( event.type )
 354                 {
 355                         case SDL_QUIT:
 356                                 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( consumer ), "done", 1 );
 357                                 break;
 358
 359                         case SDL_KEYDOWN:
 360                                 if ( event.key.keysym.unicode < 0x80 && event.key.keysym.unicode > 0 )
 361                                 {
 362                                         char keyboard[ 2 ] = { event.key.keysym.unicode, 0 };
 363                                         transport_action( producer, keyboard );
 364                                 }
 365                                 break;
 366                 }
 367         }
 368 }
 369
 370 #endif
 371
 372 static void transport( mlt_producer producer, mlt_consumer consumer )
 373 {
 374         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 375         int silent = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "silent" );
 376         int progress = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "progress" );
 377         struct timespec tm = { 0, 40000000 };
 378         int total_length = mlt_producer_get_length( producer );
 379         int last_position = 0;
 380
 381         if ( mlt_properties_get_int( properties, "done" ) == 0 && !mlt_consumer_is_stopped( consumer ) )
 382         {
 383                 if ( !silent && !progress )
 384                 {
 385                         term_init( );
 386
 387                         fprintf( stderr, "+-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+\n" );
 388                         fprintf( stderr, "|1=-10| |2= -5| |3= -2| |4= -1| |5=  0| |6=  1| |7=  2| |8=  5| |9= 10|\n" );
 389                         fprintf( stderr, "+-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+\n" );
 390
 391                         fprintf( stderr, "+---------------------------------------------------------------------+\n" );
 392                         fprintf( stderr, "|               H = back 1 minute,  L = forward 1 minute              |\n" );
 393                         fprintf( stderr, "|                 h = previous frame,  l = next frame                 |\n" );
 394                         fprintf( stderr, "|           g = start of clip, j = next clip, k = previous clip       |\n" );
 395                         fprintf( stderr, "|                0 = restart, q = quit, space = play                  |\n" );
 396                         fprintf( stderr, "+---------------------------------------------------------------------+\n" );
 397                 }
 398
 399                 while( mlt_properties_get_int( properties, "done" ) == 0 && !mlt_consumer_is_stopped( consumer ) )
 400                 {
 401                         int value = ( silent || progress )? -1 : term_read( );
 402
 403                         if ( value != -1 )
 404                         {
 405                                 char string[ 2 ] = { value, 0 };
 406                                 transport_action( producer, string );
 407                         }
 408
 409 #if (defined(__DARWIN__) || defined(WIN32)) && !defined(MELT_NOSDL)
 410                         event_handling( producer, consumer );
 411 #endif
 412
 413                         if ( !silent && mlt_properties_get_int( properties, "stats_off" ) == 0 )
 414                         {
 415                                 if ( progress )
 416                                 {
 417                                         int current_position = mlt_producer_position( producer );
 418                                         if ( current_position > last_position )
 419                                         {
 420                                                 fprintf( stderr, "Current Frame: %10d, percentage: %10d%c",
 421                                                         current_position, 100 * current_position / total_length,
 422                                                         progress == 2 ? '\n' : '\r' );
 423                                                 last_position = current_position;
 424                                         }
 425                                 }
 426                                 else
 427                                 {
 428                                         fprintf( stderr, "Current Position: %10d\r", (int)mlt_consumer_position( consumer ) );
 429                                 }
 430                                 fflush( stderr );
 431                         }
 432
 433                         if ( silent || progress )
 434                                 nanosleep( &tm, NULL );
 435                 }
 436
 437                 if ( !silent )
 438                         fprintf( stderr, "\n" );
 439         }
 440 }
 441
 442 static void show_usage( char *program_name )
 443 {
 444         fprintf( stdout,
 445 "Usage: %s [options] [producer [name=value]* ]+\n"
 446 "Options:\n"
 447 "  -attach filter[:arg] [name=value]*       Attach a filter to the output\n"
 448 "  -attach-cut filter[:arg] [name=value]*   Attach a filter to a cut\n"
 449 "  -attach-track filter[:arg] [name=value]* Attach a filter to a track\n"
 450 "  -attach-clip filter[:arg] [name=value]*  Attach a filter to a producer\n"
 451 "  -audio-track | -hide-video               Add an audio-only track\n"
 452 "  -blank frames                            Add blank silence to a track\n"
 453 "  -consumer id[:arg] [name=value]*         Set the consumer (sink)\n"
 454 "  -debug                                   Set the logging level to debug\n"
 455 "  -filter filter[:arg] [name=value]*       Add a filter to the current track\n"
 456 "  -group [name=value]*                     Apply properties repeatedly\n"
 457 "  -help                                    Show this message\n"
 458 "  -jack                                    Enable JACK transport synchronization\n"
 459 "  -join clips                              Join multiple clips into one cut\n"
 460 "  -mix length                              Add a mix between the last two cuts\n"
 461 "  -mixer transition                        Add a transition to the mix\n"
 462 "  -null-track | -hide-track                Add a hidden track\n"
 463 "  -profile name                            Set the processing settings\n"
 464 "  -progress                                Display progress along with position\n"
 465 "  -remove                                  Remove the most recent cut\n"
 466 "  -repeat times                            Repeat the last cut\n"
 467 "  -query                                   List all of the registered services\n"
 468 "  -query \"consumers\" | \"consumer\"=id       List consumers or show info about one\n"
 469 "  -query \"filters\" | \"filter\"=id           List filters or show info about one\n"
 470 "  -query \"producers\" | \"producer\"=id       List producers or show info about one\n"
 471 "  -query \"transitions\" | \"transition\"=id   List transitions, show info about one\n"
 472 "  -query \"profiles\" | \"profile\"=id         List profiles, show info about one\n"
 473 "  -query \"presets\" | \"preset\"=id           List presets, show info about one\n"
 474 "  -query \"formats\"                         List audio/video formats\n"
 475 "  -query \"audio_codecs\"                    List audio codecs\n"
 476 "  -query \"video_codecs\"                    List video codecs\n"
 477 "  -serialise [filename]                    Write the commands to a text file\n"
 478 "  -silent                                  Do not display position/transport\n"
 479 "  -split relative-frame                    Split the last cut into two cuts\n"
 480 "  -swap                                    Rearrange the last two cuts\n"
 481 "  -track                                   Add a track\n"
 482 "  -transition id[:arg] [name=value]*       Add a transition\n"
 483 "  -verbose                                 Set the logging level to verbose\n"
 484 "  -version                                 Show the version and copyright\n"
 485 "  -video-track | -hide-audio               Add a video-only track\n"
 486 "For more help: <http://www.mltframework.org/>\n",
 487         basename( program_name ) );
 488 }
 489
 490 static void query_metadata( mlt_repository repo, mlt_service_type type, const char *typestr, char *id )
 491 {
 492         mlt_properties metadata = mlt_repository_metadata( repo, type, id );
 493         if ( metadata )
 494         {
 495                 char *s = mlt_properties_serialise_yaml( metadata );
 496                 fprintf( stdout, "%s", s );
 497                 free( s );
 498         }
 499         else
 500         {
 501                 fprintf( stdout, "# No metadata for %s \"%s\"\n", typestr, id );
 502         }
 503 }
 504
 505 static int is_service_hidden(mlt_repository repo, mlt_service_type type, const char *service_name )
 506 {
 507         mlt_properties metadata = NULL;
 508         mlt_properties tags = NULL;
 509         metadata = mlt_repository_metadata(repo, type, service_name);
 510
 511         if( metadata )
 512         {
 513                 tags = mlt_properties_get_data( metadata, "tags", NULL );
 514                 if( tags )
 515                 {
 516                         int k;
 517                         for ( k = 0; k < mlt_properties_count( tags ); k++ )
 518                         {
 519                                 const char* value = mlt_properties_get_value(tags, k);
 520                                 if( !strcmp("Hidden", value) )
 521                                 {
 522                                         return 1;
 523                                 }
 524                         }
 525                 }
 526         }
 527         return 0;
 528 }
 529
 530 static void query_services( mlt_repository repo, mlt_service_type type )
 531 {
 532         mlt_properties services = NULL;
 533         const char *typestr = NULL;
 534         switch ( type )
 535         {
 536                 case consumer_type:
 537                         services = mlt_repository_consumers( repo );
 538                         typestr = "consumers";
 539                         break;
 540                 case filter_type:
 541                         services = mlt_repository_filters( repo );
 542                         typestr = "filters";
 543                         break;
 544                 case producer_type:
 545                         services = mlt_repository_producers( repo );
 546                         typestr = "producers";
 547                         break;
 548                 case transition_type:
 549                         services = mlt_repository_transitions( repo );
 550                         typestr = "transitions";
 551                         break;
 552                 default:
 553                         return;
 554         }
 555         fprintf( stdout, "---\n%s:\n", typestr );
 556         if ( services )
 557         {
 558                 int j;
 559                 for ( j = 0; j < mlt_properties_count( services ); j++ )
 560                 {
 561                         const char* service_name = mlt_properties_get_name( services, j );
 562                         if( !is_service_hidden(repo, type, service_name ) )
 563                                 fprintf( stdout, "  - %s\n", service_name );
 564                 }
 565         }
 566         fprintf( stdout, "...\n" );
 567 }
 568
 569 static void query_profiles()
 570 {
 571         mlt_properties profiles = mlt_profile_list();
 572         fprintf( stdout, "---\nprofiles:\n" );
 573         if ( profiles )
 574         {
 575                 int j;
 576                 for ( j = 0; j < mlt_properties_count( profiles ); j++ )
 577                         fprintf( stdout, "  - %s\n", mlt_properties_get_name( profiles, j ) );
 578         }
 579         fprintf( stdout, "...\n" );
 580         mlt_properties_close( profiles );
 581 }
 582
 583 static void query_profile( const char *id )
 584 {
 585         mlt_properties profiles = mlt_profile_list();
 586         mlt_properties profile = mlt_properties_get_data( profiles, id, NULL );
 587         if ( profile )
 588         {
 589                 char *s = mlt_properties_serialise_yaml( profile );
 590                 fprintf( stdout, "%s", s );
 591                 free( s );
 592         }
 593         else
 594         {
 595                 fprintf( stdout, "# No metadata for profile \"%s\"\n", id );
 596         }
 597         mlt_properties_close( profiles );
 598 }
 599
 600 static void query_presets()
 601 {
 602         mlt_properties presets = mlt_repository_presets();
 603         fprintf( stdout, "---\npresets:\n" );
 604         if ( presets )
 605         {
 606                 int j;
 607                 for ( j = 0; j < mlt_properties_count( presets ); j++ )
 608                         fprintf( stdout, "  - %s\n", mlt_properties_get_name( presets, j ) );
 609         }
 610         fprintf( stdout, "...\n" );
 611         mlt_properties_close( presets );
 612 }
 613
 614 static void query_preset( const char *id )
 615 {
 616         mlt_properties presets = mlt_repository_presets();
 617         mlt_properties preset = mlt_properties_get_data( presets, id, NULL );
 618         if ( preset )
 619         {
 620                 char *s = mlt_properties_serialise_yaml( preset );
 621                 fprintf( stdout, "%s", s );
 622                 free( s );
 623         }
 624         else
 625         {
 626                 fprintf( stdout, "# No metadata for preset \"%s\"\n", id );
 627         }
 628         mlt_properties_close( presets );
 629 }
 630
 631 static void query_formats( )
 632 {
 633         mlt_consumer consumer = mlt_factory_consumer( NULL, "avformat", NULL );
 634         if ( consumer )
 635         {
 636                 mlt_properties_set( MLT_CONSUMER_PROPERTIES(consumer), "f", "list" );
 637                 mlt_consumer_start( consumer );
 638                 mlt_consumer_close( consumer );
 639         }
 640         else
 641         {
 642                 fprintf( stdout, "# No formats - failed to load avformat consumer\n" );
 643         }
 644 }
 645
 646 static void query_acodecs( )
 647 {
 648         mlt_consumer consumer = mlt_factory_consumer( NULL, "avformat", NULL );
 649         if ( consumer )
 650         {
 651                 mlt_properties_set( MLT_CONSUMER_PROPERTIES(consumer), "acodec", "list" );
 652                 mlt_consumer_start( consumer );
 653                 mlt_consumer_close( consumer );
 654         }
 655         else
 656         {
 657                 fprintf( stdout, "# No audio codecs - failed to load avformat consumer\n" );
 658         }
 659 }
 660
 661 static void query_vcodecs( )
 662 {
 663         mlt_consumer consumer = mlt_factory_consumer( NULL, "avformat", NULL );
 664         if ( consumer )
 665         {
 666                 mlt_properties_set( MLT_CONSUMER_PROPERTIES(consumer), "vcodec", "list" );
 667                 mlt_consumer_start( consumer );
 668                 mlt_consumer_close( consumer );
 669         }
 670         else
 671         {
 672                 fprintf( stdout, "# No video codecs - failed to load avformat consumer\n" );
 673         }
 674 }
 675
 676 static void on_fatal_error( mlt_properties owner, mlt_consumer consumer )
 677 {
 678         mlt_consumer_stop( consumer );
 679         exit( EXIT_FAILURE );
 680 }
 681
 682 int main( int argc, char **argv )
 683 {
 684         int i;
 685         mlt_consumer consumer = NULL;
 686         FILE *store = NULL;
 687         char *name = NULL;
 688         mlt_profile profile = NULL;
 689         int is_progress = 0;
 690         int is_silent = 0;
 691         mlt_profile backup_profile;
 692
 693         // Handle abnormal exit situations.
 694         signal( SIGSEGV, abnormal_exit_handler );
 695         signal( SIGILL, abnormal_exit_handler );
 696         signal( SIGABRT, abnormal_exit_handler );
 697
 698         // Construct the factory
 699         mlt_repository repo = mlt_factory_init( NULL );
 700
 701 #if defined(WIN32) && !defined(MELT_NOSDL)
 702         is_silent = 1;
 703 #endif
 704
 705         for ( i = 1; i < argc; i ++ )
 706         {
 707                 // Check for serialisation switch
 708                 if ( !strcmp( argv[ i ], "-serialise" ) )
 709                 {
 710                         name = argv[ ++ i ];
 711                         if ( name != NULL && strstr( name, ".melt" ) )
 712                                 store = fopen( name, "w" );
 713                         else
 714                         {
 715                                 if ( name == NULL || name[0] == '-' )
 716                                         store = stdout;
 717                                 name = NULL;
 718                         }
 719                 }
 720                 // Look for the profile option
 721                 else if ( !strcmp( argv[ i ], "-profile" ) )
 722                 {
 723                         const char *pname = argv[ ++ i ];
 724                         if ( pname && pname[0] != '-' )
 725                                 profile = mlt_profile_init( pname );
 726                 }
 727                 else if ( !strcmp( argv[ i ], "-progress" ) )
 728                 {
 729                         is_progress = 1;
 730                 }
 731                 else if ( !strcmp( argv[ i ], "-progress2" ) )
 732                 {
 733                         is_progress = 2;
 734                 }
 735                 // Look for the query option
 736                 else if ( !strcmp( argv[ i ], "-query" ) )
 737                 {
 738                         const char *pname = argv[ ++ i ];
 739                         if ( pname && pname[0] != '-' )
 740                         {
 741                                 if ( !strcmp( pname, "consumers" ) || !strcmp( pname, "consumer" ) )
 742                                         query_services( repo, consumer_type );
 743                                 else if ( !strcmp( pname, "filters" ) || !strcmp( pname, "filter" ) )
 744                                         query_services( repo, filter_type );
 745                                 else if ( !strcmp( pname, "producers" ) || !strcmp( pname, "producer" ) )
 746                                         query_services( repo, producer_type );
 747                                 else if ( !strcmp( pname, "transitions" ) || !strcmp( pname, "transition" ) )
 748                                         query_services( repo, transition_type );
 749                                 else if ( !strcmp( pname, "profiles" ) || !strcmp( pname, "profile" ) )
 750                                         query_profiles();
 751                                 else if ( !strcmp( pname, "presets" ) || !strcmp( pname, "preset" ) )
 752                                         query_presets();
 753                                 else if ( !strncmp( pname, "format", 6 ) )
 754                                         query_formats();
 755                                 else if ( !strncmp( pname, "acodec", 6 ) || !strcmp( pname, "audio_codecs" ) )
 756                                         query_acodecs();
 757                                 else if ( !strncmp( pname, "vcodec", 6 ) || !strcmp( pname, "video_codecs" ) )
 758                                         query_vcodecs();
 759
 760                                 else if ( !strncmp( pname, "consumer=", 9 ) )
 761                                         query_metadata( repo, consumer_type, "consumer", strchr( pname, '=' ) + 1 );
 762                                 else if ( !strncmp( pname, "filter=", 7 ) )
 763                                         query_metadata( repo, filter_type, "filter", strchr( pname, '=' ) + 1 );
 764                                 else if ( !strncmp( pname, "producer=", 9 ) )
 765                                         query_metadata( repo, producer_type, "producer", strchr( pname, '=' ) + 1 );
 766                                 else if ( !strncmp( pname, "transition=", 11 ) )
 767                                         query_metadata( repo, transition_type, "transition", strchr( pname, '=' ) + 1 );
 768                                 else if ( !strncmp( pname, "profile=", 8 ) )
 769                                         query_profile( strchr( pname, '=' ) + 1 );
 770                                 else if ( !strncmp( pname, "preset=", 7 ) )
 771                                         query_preset( strchr( pname, '=' ) + 1 );
 772                                 else
 773                                         goto query_all;
 774                         }
 775                         else
 776                         {
 777 query_all:
 778                                 query_services( repo, consumer_type );
 779                                 query_services( repo, filter_type );
 780                                 query_services( repo, producer_type );
 781                                 query_services( repo, transition_type );
 782                                 fprintf( stdout, "# You can query the metadata for a specific service using:\n"
 783                                         "# -query <type>=<identifer>\n"
 784                                         "# where <type> is one of: consumer, filter, producer, or transition.\n" );
 785                         }
 786                         goto exit_factory;
 787                 }
 788                 else if ( !strcmp( argv[ i ], "-silent" ) )
 789                 {
 790                         is_silent = 1;
 791                 }
 792                 else if ( !strcmp( argv[ i ], "-verbose" ) )
 793                 {
 794                         mlt_log_set_level( MLT_LOG_VERBOSE );
 795                 }
 796                 else if ( !strcmp( argv[ i ], "-version" ) || !strcmp( argv[ i ], "--version" ) )
 797                 {
 798                         fprintf( stdout, "%s " VERSION "\n"
 799                                 "Copyright (C) 2002-2013 Ushodaya Enterprises Limited\n"
 800                                 "<http://www.mltframework.org/>\n"
 801                                 "This is free software; see the source for copying conditions.  There is NO\n"
 802                                 "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n",
 803                                 basename( argv[0] ) );
 804                         goto exit_factory;
 805                 }
 806                 else if ( !strcmp( argv[ i ], "-debug" ) )
 807                 {
 808                         mlt_log_set_level( MLT_LOG_DEBUG );
 809                 }
 810         }
 811         if ( !is_silent && !isatty( STDIN_FILENO ) && !is_progress )
 812                 is_progress = 1;
 813
 814         // Create profile if not set explicitly
 815         if ( getenv( "MLT_PROFILE" ) )
 816                 profile = mlt_profile_init( NULL );
 817         if ( profile == NULL )
 818                 profile = mlt_profile_init( NULL );
 819         else
 820                 profile->is_explicit = 1;
 821
 822         // Look for the consumer option to load profile settings from consumer properties
 823         backup_profile = mlt_profile_clone( profile );
 824         load_consumer( &consumer, profile, argc, argv );
 825
 826         // If the consumer changed the profile, then it is explicit.
 827         if ( backup_profile && !profile->is_explicit && (
 828              profile->width != backup_profile->width ||
 829              profile->height != backup_profile->height ||
 830              profile->sample_aspect_num != backup_profile->sample_aspect_num ||
 831              profile->sample_aspect_den != backup_profile->sample_aspect_den ||
 832              profile->frame_rate_den != backup_profile->frame_rate_den ||
 833              profile->frame_rate_num != backup_profile->frame_rate_num ||
 834              profile->colorspace != backup_profile->colorspace ) )
 835                 profile->is_explicit = 1;
 836         mlt_profile_close( backup_profile );
 837
 838         // Get melt producer
 839         if ( argc > 1 )
 840                 melt = mlt_factory_producer( profile, "melt", &argv[ 1 ] );
 841
 842         if ( melt )
 843         {
 844                 // Generate an automatic profile if needed.
 845                 if ( ! profile->is_explicit )
 846                 {
 847                         mlt_profile_from_producer( profile, melt );
 848                         mlt_producer_close( melt );
 849                         melt = mlt_factory_producer( profile, "melt", &argv[ 1 ] );
 850                 }
 851
 852                 // Reload the consumer with the fully qualified profile.
 853                 // The producer or auto-profile could have changed the profile.
 854                 load_consumer( &consumer, profile, argc, argv );
 855
 856                 // See if producer has consumer already attached
 857                 if ( !store && !consumer )
 858                 {
 859                         consumer = MLT_CONSUMER( mlt_service_consumer( MLT_PRODUCER_SERVICE( melt ) ) );
 860                         if ( consumer )
 861                         {
 862                                 mlt_properties_inc_ref( MLT_CONSUMER_PROPERTIES(consumer) ); // because we explicitly close it
 863                                 mlt_properties_set_data( MLT_CONSUMER_PROPERTIES(consumer),
 864                                         "transport_callback", transport_action, 0, NULL, NULL );
 865                         }
 866                 }
 867
 868                 // If we have no consumer, default to sdl
 869                 if ( store == NULL && consumer == NULL )
 870                         consumer = create_consumer( profile, NULL );
 871         }
 872
 873         // Set transport properties on consumer and produder
 874         if ( consumer != NULL && melt != NULL )
 875         {
 876                 mlt_properties_set_data( MLT_CONSUMER_PROPERTIES( consumer ), "transport_producer", melt, 0, NULL, NULL );
 877                 mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( melt ), "transport_consumer", consumer, 0, NULL, NULL );
 878                 if ( is_progress )
 879                         mlt_properties_set_int(  MLT_CONSUMER_PROPERTIES( consumer ), "progress", is_progress );
 880                 if ( is_silent )
 881                         mlt_properties_set_int(  MLT_CONSUMER_PROPERTIES( consumer ), "silent", is_silent );
 882         }
 883
 884         if ( argc > 1 && melt != NULL && mlt_producer_get_length( melt ) > 0 )
 885         {
 886                 // Parse the arguments
 887                 for ( i = 1; i < argc; i ++ )
 888                 {
 889                         if ( !strcmp( argv[ i ], "-jack" ) )
 890                         {
 891                                 setup_jack_transport( consumer, profile );
 892                         }
 893                         else if ( !strcmp( argv[ i ], "-serialise" ) )
 894                         {
 895                                 if ( store != stdout )
 896                                         i ++;
 897                         }
 898                         else
 899                         {
 900                                 if ( store != NULL )
 901                                         fprintf( store, "%s\n", argv[ i ] );
 902
 903                                 i ++;
 904
 905                                 while ( argv[ i ] != NULL && argv[ i ][ 0 ] != '-' )
 906                                 {
 907                                         if ( store != NULL )
 908                                                 fprintf( store, "%s\n", argv[ i ] );
 909                                         i += 1;
 910                                 }
 911
 912                                 i --;
 913                         }
 914                 }
 915
 916                 if ( consumer != NULL && store == NULL )
 917                 {
 918                         // Get melt's properties
 919                         mlt_properties melt_props = MLT_PRODUCER_PROPERTIES( melt );
 920
 921                         // Get the last group
 922                         mlt_properties group = mlt_properties_get_data( melt_props, "group", 0 );
 923
 924                         // Apply group settings
 925                         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 926                         mlt_properties_inherit( properties, group );
 927
 928                         // Connect consumer to melt
 929                         mlt_consumer_connect( consumer, MLT_PRODUCER_SERVICE( melt ) );
 930
 931                         // Start the consumer
 932                         mlt_events_listen( properties, consumer, "consumer-fatal-error", ( mlt_listener )on_fatal_error );
 933                         if ( mlt_consumer_start( consumer ) == 0 )
 934                         {
 935                                 // Try to exit gracefully upon these signals
 936                                 signal( SIGINT, stop_handler );
 937                                 signal( SIGTERM, stop_handler );
 938 #ifndef WIN32
 939                                 signal( SIGHUP, stop_handler );
 940                                 signal( SIGPIPE, stop_handler );
 941 #endif
 942
 943                                 // Transport functionality
 944                                 transport( melt, consumer );
 945
 946                                 // Stop the consumer
 947                                 mlt_consumer_stop( consumer );
 948                         }
 949                 }
 950                 else if ( store != NULL && store != stdout && name != NULL )
 951                 {
 952                         fprintf( stderr, "Project saved as %s.\n", name );
 953                         fclose( store );
 954                 }
 955         }
 956         else
 957         {
 958                 show_usage( argv[0] );
 959         }
 960
 961         // Disconnect producer from consumer to prevent ref cycles from closing services
 962         if ( consumer )
 963                 mlt_consumer_connect( consumer, NULL );
 964
 965         // Close the producer
 966         if ( melt != NULL )
 967                 mlt_producer_close( melt );
 968
 969         // Close the consumer
 970         if ( consumer != NULL )
 971                 mlt_consumer_close( consumer );
 972
 973         // Close the factory
 974         mlt_profile_close( profile );
 975
 976 exit_factory:
 977
 978         mlt_factory_close( );
 979
 980         return 0;
 981 }