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 #ifndef WIN32
  60         kill(getpid(), signum);
  61 #endif
  62 }
  63
  64 static void transport_action( mlt_producer producer, char *value )
  65 {
  66         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
  67         mlt_multitrack multitrack = mlt_properties_get_data( properties, "multitrack", NULL );
  68         mlt_consumer consumer = mlt_properties_get_data( properties, "transport_consumer", NULL );
  69         mlt_properties jack = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES( consumer ), "jack_filter", NULL );
  70         mlt_position position = producer? mlt_producer_position( producer ) : 0;
  71
  72         mlt_properties_set_int( properties, "stats_off", 1 );
  73
  74         if ( strlen( value ) == 1 )
  75         {
  76                 switch( value[ 0 ] )
  77                 {
  78                         case 'q':
  79                         case 'Q':
  80                                 mlt_properties_set_int( properties, "done", 1 );
  81                                 mlt_events_fire( jack, "jack-stop", NULL );
  82                                 break;
  83                         case '0':
  84                                 position = 0;
  85                                 mlt_producer_set_speed( producer, 1 );
  86                                 mlt_producer_seek( producer, position );
  87                                 mlt_consumer_purge( consumer );
  88                                 mlt_events_fire( jack, "jack-seek", &position, NULL );
  89                                 break;
  90                         case '1':
  91                                 mlt_producer_set_speed( producer, -10 );
  92                                 break;
  93                         case '2':
  94                                 mlt_producer_set_speed( producer, -5 );
  95                                 break;
  96                         case '3':
  97                                 mlt_producer_set_speed( producer, -2 );
  98                                 break;
  99                         case '4':
 100                                 mlt_producer_set_speed( producer, -1 );
 101                                 break;
 102                         case '5':
 103                                 mlt_producer_set_speed( producer, 0 );
 104                                 mlt_consumer_purge( consumer );
 105                                 mlt_events_fire( jack, "jack-stop", NULL );
 106                                 break;
 107                         case '6':
 108                         case ' ':
 109                                 if ( !jack || mlt_producer_get_speed( producer ) != 0 )
 110                                         mlt_producer_set_speed( producer, 1 );
 111                                 mlt_consumer_purge( consumer );
 112                                 mlt_events_fire( jack, "jack-start", NULL );
 113                                 break;
 114                         case '7':
 115                                 mlt_producer_set_speed( producer, 2 );
 116                                 break;
 117                         case '8':
 118                                 mlt_producer_set_speed( producer, 5 );
 119                                 break;
 120                         case '9':
 121                                 mlt_producer_set_speed( producer, 10 );
 122                                 break;
 123                         case 'd':
 124                                 if ( multitrack != NULL )
 125                                 {
 126                                         int i = 0;
 127                                         mlt_position last = -1;
 128                                         fprintf( stderr, "\n" );
 129                                         for ( i = 0; 1; i ++ )
 130                                         {
 131                                                 position = mlt_multitrack_clip( multitrack, mlt_whence_relative_start, i );
 132                                                 if ( position == last )
 133                                                         break;
 134                                                 last = position;
 135                                                 fprintf( stderr, "%d: %d\n", i, (int)position );
 136                                         }
 137                                 }
 138                                 break;
 139
 140                         case 'g':
 141                                 if ( multitrack != NULL )
 142                                 {
 143                                         position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, 0 );
 144                                         mlt_producer_seek( producer, position );
 145                                         mlt_consumer_purge( consumer );
 146                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 147                                 }
 148                                 break;
 149                         case 'H':
 150                                 if ( producer != NULL )
 151                                 {
 152                                         position -= mlt_producer_get_fps( producer ) * 60;
 153                                         mlt_consumer_purge( consumer );
 154                                         mlt_producer_seek( producer, position );
 155                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 156                                 }
 157                                 break;
 158                         case 'h':
 159                                 if ( producer != NULL )
 160                                 {
 161                                         position--;
 162                                         mlt_producer_set_speed( producer, 0 );
 163                                         mlt_consumer_purge( consumer );
 164                                         mlt_producer_seek( producer, position );
 165                                         mlt_events_fire( jack, "jack-stop", NULL );
 166                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 167                                 }
 168                                 break;
 169                         case 'j':
 170                                 if ( multitrack != NULL )
 171                                 {
 172                                         position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, 1 );
 173                                         mlt_consumer_purge( consumer );
 174                                         mlt_producer_seek( producer, position );
 175                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 176                                 }
 177                                 break;
 178                         case 'k':
 179                                 if ( multitrack != NULL )
 180                                 {
 181                                         position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, -1 );
 182                                         mlt_consumer_purge( consumer );
 183                                         mlt_producer_seek( producer, position );
 184                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 185                                 }
 186                                 break;
 187                         case 'l':
 188                                 if ( producer != NULL )
 189                                 {
 190                                         position++;
 191                                         mlt_consumer_purge( consumer );
 192                                         if ( mlt_producer_get_speed( producer ) != 0 )
 193                                         {
 194                                                 mlt_producer_set_speed( producer, 0 );
 195                                                 mlt_events_fire( jack, "jack-stop", NULL );
 196                                         }
 197                                         else
 198                                         {
 199                                                 mlt_producer_seek( producer, position );
 200                                                 mlt_events_fire( jack, "jack-seek", &position, NULL );
 201                                         }
 202                                 }
 203                                 break;
 204                         case 'L':
 205                                 if ( producer != NULL )
 206                                 {
 207                                         position += mlt_producer_get_fps( producer ) * 60;
 208                                         mlt_consumer_purge( consumer );
 209                                         mlt_producer_seek( producer, position );
 210                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 211                                 }
 212                                 break;
 213                 }
 214
 215                 mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 );
 216         }
 217
 218         mlt_properties_set_int( properties, "stats_off", 0 );
 219 }
 220
 221 static void on_jack_started( mlt_properties owner, mlt_consumer consumer, mlt_position *position )
 222 {
 223         mlt_producer producer = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES(consumer), "transport_producer", NULL );
 224         if ( producer )
 225         {
 226                 if ( mlt_producer_get_speed( producer ) != 0 )
 227                 {
 228                         mlt_properties jack = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES( consumer ), "jack_filter", NULL );
 229                         mlt_events_fire( jack, "jack-stop", NULL );
 230                 }
 231                 else
 232                 {
 233                         mlt_producer_set_speed( producer, 1 );
 234                         mlt_consumer_purge( consumer );
 235                         mlt_producer_seek( producer, *position );
 236                         mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 );
 237                 }
 238         }
 239 }
 240
 241 static void on_jack_stopped( mlt_properties owner, mlt_consumer consumer, mlt_position *position )
 242 {
 243         mlt_producer producer = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES(consumer), "transport_producer", NULL );
 244         if ( producer )
 245         {
 246                 mlt_producer_set_speed( producer, 0 );
 247                 mlt_consumer_purge( consumer );
 248                 mlt_producer_seek( producer, *position );
 249                 mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 );
 250         }
 251 }
 252
 253 static void setup_jack_transport( mlt_consumer consumer, mlt_profile profile )
 254 {
 255         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 256         mlt_filter jack = mlt_factory_filter( profile, "jackrack", NULL );
 257         mlt_properties jack_properties = MLT_FILTER_PROPERTIES(jack);
 258
 259         mlt_service_attach( MLT_CONSUMER_SERVICE(consumer), jack );
 260         mlt_properties_set_int( properties, "audio_off", 1 );
 261         mlt_properties_set_data( properties, "jack_filter", jack, 0, (mlt_destructor) mlt_filter_close, NULL );
 262 //      mlt_properties_set( jack_properties, "out_1", "system:playback_1" );
 263 //      mlt_properties_set( jack_properties, "out_2", "system:playback_2" );
 264         mlt_events_listen( jack_properties, consumer, "jack-started", (mlt_listener) on_jack_started );
 265         mlt_events_listen( jack_properties, consumer, "jack-stopped", (mlt_listener) on_jack_stopped );
 266 }
 267
 268 static mlt_consumer create_consumer( mlt_profile profile, char *id )
 269 {
 270         char *myid = id ? strdup( id ) : NULL;
 271         char *arg = myid ? strchr( myid, ':' ) : NULL;
 272         if ( arg != NULL )
 273                 *arg ++ = '\0';
 274         mlt_consumer consumer = mlt_factory_consumer( profile, myid, arg );
 275         if ( consumer != NULL )
 276         {
 277                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 278                 mlt_properties_set_data( properties, "transport_callback", transport_action, 0, NULL, NULL );
 279         }
 280         if ( myid )
 281                 free( myid );
 282         return consumer;
 283 }
 284
 285 static void load_consumer( mlt_consumer *consumer, mlt_profile profile, int argc, char **argv )
 286 {
 287         int i;
 288         int multi = 0;
 289         int qglsl = 0;
 290
 291         for ( i = 1; i < argc; i ++ ) {
 292                 // See if we need multi consumer.
 293                 multi += !strcmp( argv[i], "-consumer" );
 294                 // Seee if we need the qglsl variant of multi consumer.
 295                 if ( !strncmp( argv[i], "glsl.", 5 ) || !strncmp( argv[i], "movit.", 6 ) )
 296                         qglsl = 1;
 297         }
 298         // Disable qglsl if xgl is being used!
 299         for ( i = 1; qglsl && i < argc; i ++ )
 300                 if ( !strcmp( argv[i], "xgl" ) )
 301                         qglsl = 0;
 302
 303         if ( multi > 1 || qglsl )
 304         {
 305                 // If there is more than one -consumer use the 'multi' consumer.
 306                 int k = 0;
 307                 char key[20];
 308
 309                 if ( *consumer )
 310                         mlt_consumer_close( *consumer );
 311                 *consumer = create_consumer( profile, ( qglsl? "qglsl" : "multi" ) );
 312                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( *consumer );
 313                 for ( i = 1; i < argc; i ++ )
 314                 {
 315                         if ( !strcmp( argv[ i ], "-consumer" ) && argv[ i + 1 ])
 316                         {
 317                                 // Create a properties object for each sub-consumer
 318                                 mlt_properties new_props = mlt_properties_new();
 319                                 snprintf( key, sizeof(key), "%d", k++ );
 320                                 mlt_properties_set_data( properties, key, new_props, 0,
 321                                         (mlt_destructor) mlt_properties_close, NULL );
 322                                 if ( strchr( argv[i + 1], ':' ) )
 323                                 {
 324                                         char *temp = strdup( argv[++i] );
 325                                         char *service = temp;
 326                                         char *target = strchr( temp, ':' );
 327                                         *target++ = 0;
 328                                         mlt_properties_set( new_props, "mlt_service", service );
 329                                         mlt_properties_set( new_props, "target", target );
 330                                 }
 331                                 else
 332                                 {
 333                                         mlt_properties_set( new_props, "mlt_service", argv[ ++i ] );
 334                                 }
 335                                 while ( argv[ i + 1 ] && strchr( argv[ i + 1 ], '=' ) )
 336                                         mlt_properties_parse( new_props, argv[ ++ i ] );
 337                         }
 338                 }
 339         }
 340         else for ( i = 1; i < argc; i ++ )
 341         {
 342                 if ( !strcmp( argv[ i ], "-consumer" ) )
 343                 {
 344                         if ( *consumer )
 345                                 mlt_consumer_close( *consumer );
 346                         *consumer = create_consumer( profile, argv[ ++ i ] );
 347                         if ( *consumer )
 348                         {
 349                                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( *consumer );
 350                                 while ( argv[ i + 1 ] != NULL && strchr( argv[ i + 1 ], '=' ) )
 351                                         mlt_properties_parse( properties, argv[ ++ i ] );
 352                         }
 353                 }
 354         }
 355 }
 356
 357 #if (defined(__DARWIN__) || defined(WIN32)) && !defined(MELT_NOSDL)
 358
 359 static void event_handling( mlt_producer producer, mlt_consumer consumer )
 360 {
 361         SDL_Event event;
 362
 363         while ( SDL_PollEvent( &event ) )
 364         {
 365                 switch( event.type )
 366                 {
 367                         case SDL_QUIT:
 368                                 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( consumer ), "done", 1 );
 369                                 break;
 370
 371                         case SDL_KEYDOWN:
 372                                 if ( event.key.keysym.unicode < 0x80 && event.key.keysym.unicode > 0 )
 373                                 {
 374                                         char keyboard[ 2 ] = { event.key.keysym.unicode, 0 };
 375                                         transport_action( producer, keyboard );
 376                                 }
 377                                 break;
 378                 }
 379         }
 380 }
 381
 382 #endif
 383
 384 static void transport( mlt_producer producer, mlt_consumer consumer )
 385 {
 386         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 387         int silent = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "silent" );
 388         int progress = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "progress" );
 389         struct timespec tm = { 0, 40000000 };
 390         int total_length = mlt_producer_get_length( producer );
 391         int last_position = 0;
 392
 393         if ( mlt_properties_get_int( properties, "done" ) == 0 && !mlt_consumer_is_stopped( consumer ) )
 394         {
 395                 if ( !silent && !progress )
 396                 {
 397                         term_init( );
 398
 399                         fprintf( stderr, "+-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+\n" );
 400                         fprintf( stderr, "|1=-10| |2= -5| |3= -2| |4= -1| |5=  0| |6=  1| |7=  2| |8=  5| |9= 10|\n" );
 401                         fprintf( stderr, "+-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+\n" );
 402
 403                         fprintf( stderr, "+---------------------------------------------------------------------+\n" );
 404                         fprintf( stderr, "|               H = back 1 minute,  L = forward 1 minute              |\n" );
 405                         fprintf( stderr, "|                 h = previous frame,  l = next frame                 |\n" );
 406                         fprintf( stderr, "|           g = start of clip, j = next clip, k = previous clip       |\n" );
 407                         fprintf( stderr, "|                0 = restart, q = quit, space = play                  |\n" );
 408                         fprintf( stderr, "+---------------------------------------------------------------------+\n" );
 409                 }
 410
 411                 while( mlt_properties_get_int( properties, "done" ) == 0 && !mlt_consumer_is_stopped( consumer ) )
 412                 {
 413                         int value = ( silent || progress )? -1 : term_read( );
 414
 415                         if ( value != -1 )
 416                         {
 417                                 char string[ 2 ] = { value, 0 };
 418                                 transport_action( producer, string );
 419                         }
 420
 421 #if (defined(__DARWIN__) || defined(WIN32)) && !defined(MELT_NOSDL)
 422                         event_handling( producer, consumer );
 423 #endif
 424
 425                         if ( !silent && mlt_properties_get_int( properties, "stats_off" ) == 0 )
 426                         {
 427                                 if ( progress )
 428                                 {
 429                                         int current_position = mlt_producer_position( producer );
 430                                         if ( current_position > last_position )
 431                                         {
 432                                                 fprintf( stderr, "Current Frame: %10d, percentage: %10d%c",
 433                                                         current_position, 100 * current_position / total_length,
 434                                                         progress == 2 ? '\n' : '\r' );
 435                                                 last_position = current_position;
 436                                         }
 437                                 }
 438                                 else
 439                                 {
 440                                         fprintf( stderr, "Current Position: %10d\r", (int)mlt_consumer_position( consumer ) );
 441                                 }
 442                                 fflush( stderr );
 443                         }
 444
 445                         if ( silent || progress )
 446                                 nanosleep( &tm, NULL );
 447                 }
 448
 449                 if ( !silent )
 450                         fprintf( stderr, "\n" );
 451         }
 452 }
 453
 454 static void show_usage( char *program_name )
 455 {
 456         fprintf( stdout,
 457 "Usage: %s [options] [producer [name=value]* ]+\n"
 458 "Options:\n"
 459 "  -attach filter[:arg] [name=value]*       Attach a filter to the output\n"
 460 "  -attach-cut filter[:arg] [name=value]*   Attach a filter to a cut\n"
 461 "  -attach-track filter[:arg] [name=value]* Attach a filter to a track\n"
 462 "  -attach-clip filter[:arg] [name=value]*  Attach a filter to a producer\n"
 463 "  -audio-track | -hide-video               Add an audio-only track\n"
 464 "  -blank frames                            Add blank silence to a track\n"
 465 "  -consumer id[:arg] [name=value]*         Set the consumer (sink)\n"
 466 "  -debug                                   Set the logging level to debug\n"
 467 "  -filter filter[:arg] [name=value]*       Add a filter to the current track\n"
 468 "  -group [name=value]*                     Apply properties repeatedly\n"
 469 "  -help                                    Show this message\n"
 470 "  -jack                                    Enable JACK transport synchronization\n"
 471 "  -join clips                              Join multiple clips into one cut\n"
 472 "  -mix length                              Add a mix between the last two cuts\n"
 473 "  -mixer transition                        Add a transition to the mix\n"
 474 "  -null-track | -hide-track                Add a hidden track\n"
 475 "  -profile name                            Set the processing settings\n"
 476 "  -progress                                Display progress along with position\n"
 477 "  -remove                                  Remove the most recent cut\n"
 478 "  -repeat times                            Repeat the last cut\n"
 479 "  -query                                   List all of the registered services\n"
 480 "  -query \"consumers\" | \"consumer\"=id       List consumers or show info about one\n"
 481 "  -query \"filters\" | \"filter\"=id           List filters or show info about one\n"
 482 "  -query \"producers\" | \"producer\"=id       List producers or show info about one\n"
 483 "  -query \"transitions\" | \"transition\"=id   List transitions, show info about one\n"
 484 "  -query \"profiles\" | \"profile\"=id         List profiles, show info about one\n"
 485 "  -query \"presets\" | \"preset\"=id           List presets, show info about one\n"
 486 "  -query \"formats\"                         List audio/video formats\n"
 487 "  -query \"audio_codecs\"                    List audio codecs\n"
 488 "  -query \"video_codecs\"                    List video codecs\n"
 489 "  -serialise [filename]                    Write the commands to a text file\n"
 490 "  -silent                                  Do not display position/transport\n"
 491 "  -split relative-frame                    Split the last cut into two cuts\n"
 492 "  -swap                                    Rearrange the last two cuts\n"
 493 "  -track                                   Add a track\n"
 494 "  -transition id[:arg] [name=value]*       Add a transition\n"
 495 "  -verbose                                 Set the logging level to verbose\n"
 496 "  -version                                 Show the version and copyright\n"
 497 "  -video-track | -hide-audio               Add a video-only track\n"
 498 "For more help: <http://www.mltframework.org/>\n",
 499         basename( program_name ) );
 500 }
 501
 502 static void query_metadata( mlt_repository repo, mlt_service_type type, const char *typestr, char *id )
 503 {
 504         mlt_properties metadata = mlt_repository_metadata( repo, type, id );
 505         if ( metadata )
 506         {
 507                 char *s = mlt_properties_serialise_yaml( metadata );
 508                 fprintf( stdout, "%s", s );
 509                 free( s );
 510         }
 511         else
 512         {
 513                 fprintf( stdout, "# No metadata for %s \"%s\"\n", typestr, id );
 514         }
 515 }
 516
 517 static int is_service_hidden(mlt_repository repo, mlt_service_type type, const char *service_name )
 518 {
 519         mlt_properties metadata = NULL;
 520         mlt_properties tags = NULL;
 521         metadata = mlt_repository_metadata(repo, type, service_name);
 522
 523         if( metadata )
 524         {
 525                 tags = mlt_properties_get_data( metadata, "tags", NULL );
 526                 if( tags )
 527                 {
 528                         int k;
 529                         for ( k = 0; k < mlt_properties_count( tags ); k++ )
 530                         {
 531                                 const char* value = mlt_properties_get_value(tags, k);
 532                                 if( !strcmp("Hidden", value) )
 533                                 {
 534                                         return 1;
 535                                 }
 536                         }
 537                 }
 538         }
 539         return 0;
 540 }
 541
 542 static void query_services( mlt_repository repo, mlt_service_type type )
 543 {
 544         mlt_properties services = NULL;
 545         const char *typestr = NULL;
 546         switch ( type )
 547         {
 548                 case consumer_type:
 549                         services = mlt_repository_consumers( repo );
 550                         typestr = "consumers";
 551                         break;
 552                 case filter_type:
 553                         services = mlt_repository_filters( repo );
 554                         typestr = "filters";
 555                         break;
 556                 case producer_type:
 557                         services = mlt_repository_producers( repo );
 558                         typestr = "producers";
 559                         break;
 560                 case transition_type:
 561                         services = mlt_repository_transitions( repo );
 562                         typestr = "transitions";
 563                         break;
 564                 default:
 565                         return;
 566         }
 567         fprintf( stdout, "---\n%s:\n", typestr );
 568         if ( services )
 569         {
 570                 int j;
 571                 for ( j = 0; j < mlt_properties_count( services ); j++ )
 572                 {
 573                         const char* service_name = mlt_properties_get_name( services, j );
 574                         if( !is_service_hidden(repo, type, service_name ) )
 575                                 fprintf( stdout, "  - %s\n", service_name );
 576                 }
 577         }
 578         fprintf( stdout, "...\n" );
 579 }
 580
 581 static void query_profiles()
 582 {
 583         mlt_properties profiles = mlt_profile_list();
 584         fprintf( stdout, "---\nprofiles:\n" );
 585         if ( profiles )
 586         {
 587                 int j;
 588                 for ( j = 0; j < mlt_properties_count( profiles ); j++ )
 589                         fprintf( stdout, "  - %s\n", mlt_properties_get_name( profiles, j ) );
 590         }
 591         fprintf( stdout, "...\n" );
 592         mlt_properties_close( profiles );
 593 }
 594
 595 static void query_profile( const char *id )
 596 {
 597         mlt_properties profiles = mlt_profile_list();
 598         mlt_properties profile = mlt_properties_get_data( profiles, id, NULL );
 599         if ( profile )
 600         {
 601                 char *s = mlt_properties_serialise_yaml( profile );
 602                 fprintf( stdout, "%s", s );
 603                 free( s );
 604         }
 605         else
 606         {
 607                 fprintf( stdout, "# No metadata for profile \"%s\"\n", id );
 608         }
 609         mlt_properties_close( profiles );
 610 }
 611
 612 static void query_presets()
 613 {
 614         mlt_properties presets = mlt_repository_presets();
 615         fprintf( stdout, "---\npresets:\n" );
 616         if ( presets )
 617         {
 618                 int j;
 619                 for ( j = 0; j < mlt_properties_count( presets ); j++ )
 620                         fprintf( stdout, "  - %s\n", mlt_properties_get_name( presets, j ) );
 621         }
 622         fprintf( stdout, "...\n" );
 623         mlt_properties_close( presets );
 624 }
 625
 626 static void query_preset( const char *id )
 627 {
 628         mlt_properties presets = mlt_repository_presets();
 629         mlt_properties preset = mlt_properties_get_data( presets, id, NULL );
 630         if ( preset )
 631         {
 632                 char *s = mlt_properties_serialise_yaml( preset );
 633                 fprintf( stdout, "%s", s );
 634                 free( s );
 635         }
 636         else
 637         {
 638                 fprintf( stdout, "# No metadata for preset \"%s\"\n", id );
 639         }
 640         mlt_properties_close( presets );
 641 }
 642
 643 static void query_formats( )
 644 {
 645         mlt_consumer consumer = mlt_factory_consumer( NULL, "avformat", NULL );
 646         if ( consumer )
 647         {
 648                 mlt_properties_set( MLT_CONSUMER_PROPERTIES(consumer), "f", "list" );
 649                 mlt_consumer_start( consumer );
 650                 mlt_consumer_close( consumer );
 651         }
 652         else
 653         {
 654                 fprintf( stdout, "# No formats - failed to load avformat consumer\n" );
 655         }
 656 }
 657
 658 static void query_acodecs( )
 659 {
 660         mlt_consumer consumer = mlt_factory_consumer( NULL, "avformat", NULL );
 661         if ( consumer )
 662         {
 663                 mlt_properties_set( MLT_CONSUMER_PROPERTIES(consumer), "acodec", "list" );
 664                 mlt_consumer_start( consumer );
 665                 mlt_consumer_close( consumer );
 666         }
 667         else
 668         {
 669                 fprintf( stdout, "# No audio codecs - failed to load avformat consumer\n" );
 670         }
 671 }
 672
 673 static void query_vcodecs( )
 674 {
 675         mlt_consumer consumer = mlt_factory_consumer( NULL, "avformat", NULL );
 676         if ( consumer )
 677         {
 678                 mlt_properties_set( MLT_CONSUMER_PROPERTIES(consumer), "vcodec", "list" );
 679                 mlt_consumer_start( consumer );
 680                 mlt_consumer_close( consumer );
 681         }
 682         else
 683         {
 684                 fprintf( stdout, "# No video codecs - failed to load avformat consumer\n" );
 685         }
 686 }
 687
 688 static void on_fatal_error( mlt_properties owner, mlt_consumer consumer )
 689 {
 690         mlt_consumer_stop( consumer );
 691         exit( EXIT_FAILURE );
 692 }
 693
 694 int main( int argc, char **argv )
 695 {
 696         int i;
 697         mlt_consumer consumer = NULL;
 698         FILE *store = NULL;
 699         char *name = NULL;
 700         mlt_profile profile = NULL;
 701         int is_progress = 0;
 702         int is_silent = 0;
 703         mlt_profile backup_profile;
 704
 705         // Handle abnormal exit situations.
 706         signal( SIGSEGV, abnormal_exit_handler );
 707         signal( SIGILL, abnormal_exit_handler );
 708         signal( SIGABRT, abnormal_exit_handler );
 709
 710         // Construct the factory
 711         mlt_repository repo = mlt_factory_init( NULL );
 712
 713 #if defined(WIN32) && !defined(MELT_NOSDL)
 714         is_silent = 1;
 715 #endif
 716
 717         for ( i = 1; i < argc; i ++ )
 718         {
 719                 // Check for serialisation switch
 720                 if ( !strcmp( argv[ i ], "-serialise" ) )
 721                 {
 722                         name = argv[ ++ i ];
 723                         if ( name != NULL && strstr( name, ".melt" ) )
 724                                 store = fopen( name, "w" );
 725                         else
 726                         {
 727                                 if ( name == NULL || name[0] == '-' )
 728                                         store = stdout;
 729                                 name = NULL;
 730                         }
 731                 }
 732                 // Look for the profile option
 733                 else if ( !strcmp( argv[ i ], "-profile" ) )
 734                 {
 735                         const char *pname = argv[ ++ i ];
 736                         if ( pname && pname[0] != '-' )
 737                                 profile = mlt_profile_init( pname );
 738                 }
 739                 else if ( !strcmp( argv[ i ], "-progress" ) )
 740                 {
 741                         is_progress = 1;
 742                 }
 743                 else if ( !strcmp( argv[ i ], "-progress2" ) )
 744                 {
 745                         is_progress = 2;
 746                 }
 747                 // Look for the query option
 748                 else if ( !strcmp( argv[ i ], "-query" ) )
 749                 {
 750                         const char *pname = argv[ ++ i ];
 751                         if ( pname && pname[0] != '-' )
 752                         {
 753                                 if ( !strcmp( pname, "consumers" ) || !strcmp( pname, "consumer" ) )
 754                                         query_services( repo, consumer_type );
 755                                 else if ( !strcmp( pname, "filters" ) || !strcmp( pname, "filter" ) )
 756                                         query_services( repo, filter_type );
 757                                 else if ( !strcmp( pname, "producers" ) || !strcmp( pname, "producer" ) )
 758                                         query_services( repo, producer_type );
 759                                 else if ( !strcmp( pname, "transitions" ) || !strcmp( pname, "transition" ) )
 760                                         query_services( repo, transition_type );
 761                                 else if ( !strcmp( pname, "profiles" ) || !strcmp( pname, "profile" ) )
 762                                         query_profiles();
 763                                 else if ( !strcmp( pname, "presets" ) || !strcmp( pname, "preset" ) )
 764                                         query_presets();
 765                                 else if ( !strncmp( pname, "format", 6 ) )
 766                                         query_formats();
 767                                 else if ( !strncmp( pname, "acodec", 6 ) || !strcmp( pname, "audio_codecs" ) )
 768                                         query_acodecs();
 769                                 else if ( !strncmp( pname, "vcodec", 6 ) || !strcmp( pname, "video_codecs" ) )
 770                                         query_vcodecs();
 771
 772                                 else if ( !strncmp( pname, "consumer=", 9 ) )
 773                                         query_metadata( repo, consumer_type, "consumer", strchr( pname, '=' ) + 1 );
 774                                 else if ( !strncmp( pname, "filter=", 7 ) )
 775                                         query_metadata( repo, filter_type, "filter", strchr( pname, '=' ) + 1 );
 776                                 else if ( !strncmp( pname, "producer=", 9 ) )
 777                                         query_metadata( repo, producer_type, "producer", strchr( pname, '=' ) + 1 );
 778                                 else if ( !strncmp( pname, "transition=", 11 ) )
 779                                         query_metadata( repo, transition_type, "transition", strchr( pname, '=' ) + 1 );
 780                                 else if ( !strncmp( pname, "profile=", 8 ) )
 781                                         query_profile( strchr( pname, '=' ) + 1 );
 782                                 else if ( !strncmp( pname, "preset=", 7 ) )
 783                                         query_preset( strchr( pname, '=' ) + 1 );
 784                                 else
 785                                         goto query_all;
 786                         }
 787                         else
 788                         {
 789 query_all:
 790                                 query_services( repo, consumer_type );
 791                                 query_services( repo, filter_type );
 792                                 query_services( repo, producer_type );
 793                                 query_services( repo, transition_type );
 794                                 fprintf( stdout, "# You can query the metadata for a specific service using:\n"
 795                                         "# -query <type>=<identifer>\n"
 796                                         "# where <type> is one of: consumer, filter, producer, or transition.\n" );
 797                         }
 798                         goto exit_factory;
 799                 }
 800                 else if ( !strcmp( argv[ i ], "-silent" ) )
 801                 {
 802                         is_silent = 1;
 803                 }
 804                 else if ( !strcmp( argv[ i ], "-verbose" ) )
 805                 {
 806                         mlt_log_set_level( MLT_LOG_VERBOSE );
 807                 }
 808                 else if ( !strcmp( argv[ i ], "-version" ) || !strcmp( argv[ i ], "--version" ) )
 809                 {
 810                         fprintf( stdout, "%s " VERSION "\n"
 811                                 "Copyright (C) 2002-2013 Ushodaya Enterprises Limited\n"
 812                                 "<http://www.mltframework.org/>\n"
 813                                 "This is free software; see the source for copying conditions.  There is NO\n"
 814                                 "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n",
 815                                 basename( argv[0] ) );
 816                         goto exit_factory;
 817                 }
 818                 else if ( !strcmp( argv[ i ], "-debug" ) )
 819                 {
 820                         mlt_log_set_level( MLT_LOG_DEBUG );
 821                 }
 822         }
 823         if ( !is_silent && !isatty( STDIN_FILENO ) && !is_progress )
 824                 is_progress = 1;
 825
 826         // Create profile if not set explicitly
 827         if ( getenv( "MLT_PROFILE" ) )
 828                 profile = mlt_profile_init( NULL );
 829         if ( profile == NULL )
 830                 profile = mlt_profile_init( NULL );
 831         else
 832                 profile->is_explicit = 1;
 833
 834         // Look for the consumer option to load profile settings from consumer properties
 835         backup_profile = mlt_profile_clone( profile );
 836         load_consumer( &consumer, profile, argc, argv );
 837
 838         // If the consumer changed the profile, then it is explicit.
 839         if ( backup_profile && !profile->is_explicit && (
 840              profile->width != backup_profile->width ||
 841              profile->height != backup_profile->height ||
 842              profile->sample_aspect_num != backup_profile->sample_aspect_num ||
 843              profile->sample_aspect_den != backup_profile->sample_aspect_den ||
 844              profile->frame_rate_den != backup_profile->frame_rate_den ||
 845              profile->frame_rate_num != backup_profile->frame_rate_num ||
 846              profile->colorspace != backup_profile->colorspace ) )
 847                 profile->is_explicit = 1;
 848         mlt_profile_close( backup_profile );
 849
 850         // Get melt producer
 851         if ( argc > 1 )
 852                 melt = mlt_factory_producer( profile, "melt", &argv[ 1 ] );
 853
 854         if ( melt )
 855         {
 856                 // Generate an automatic profile if needed.
 857                 if ( ! profile->is_explicit )
 858                 {
 859                         mlt_profile_from_producer( profile, melt );
 860                         mlt_producer_close( melt );
 861                         melt = mlt_factory_producer( profile, "melt", &argv[ 1 ] );
 862                 }
 863
 864                 // Reload the consumer with the fully qualified profile.
 865                 // The producer or auto-profile could have changed the profile.
 866                 load_consumer( &consumer, profile, argc, argv );
 867
 868                 // See if producer has consumer already attached
 869                 if ( !store && !consumer )
 870                 {
 871                         consumer = MLT_CONSUMER( mlt_service_consumer( MLT_PRODUCER_SERVICE( melt ) ) );
 872                         if ( consumer )
 873                         {
 874                                 mlt_properties_inc_ref( MLT_CONSUMER_PROPERTIES(consumer) ); // because we explicitly close it
 875                                 mlt_properties_set_data( MLT_CONSUMER_PROPERTIES(consumer),
 876                                         "transport_callback", transport_action, 0, NULL, NULL );
 877                         }
 878                 }
 879
 880                 // If we have no consumer, default to sdl
 881                 if ( store == NULL && consumer == NULL )
 882                         consumer = create_consumer( profile, NULL );
 883         }
 884
 885         // Set transport properties on consumer and produder
 886         if ( consumer != NULL && melt != NULL )
 887         {
 888                 mlt_properties_set_data( MLT_CONSUMER_PROPERTIES( consumer ), "transport_producer", melt, 0, NULL, NULL );
 889                 mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( melt ), "transport_consumer", consumer, 0, NULL, NULL );
 890                 if ( is_progress )
 891                         mlt_properties_set_int(  MLT_CONSUMER_PROPERTIES( consumer ), "progress", is_progress );
 892                 if ( is_silent )
 893                         mlt_properties_set_int(  MLT_CONSUMER_PROPERTIES( consumer ), "silent", is_silent );
 894         }
 895
 896         if ( argc > 1 && melt != NULL && mlt_producer_get_length( melt ) > 0 )
 897         {
 898                 // Parse the arguments
 899                 for ( i = 1; i < argc; i ++ )
 900                 {
 901                         if ( !strcmp( argv[ i ], "-jack" ) )
 902                         {
 903                                 setup_jack_transport( consumer, profile );
 904                         }
 905                         else if ( !strcmp( argv[ i ], "-serialise" ) )
 906                         {
 907                                 if ( store != stdout )
 908                                         i ++;
 909                         }
 910                         else
 911                         {
 912                                 if ( store != NULL )
 913                                         fprintf( store, "%s\n", argv[ i ] );
 914
 915                                 i ++;
 916
 917                                 while ( argv[ i ] != NULL && argv[ i ][ 0 ] != '-' )
 918                                 {
 919                                         if ( store != NULL )
 920                                                 fprintf( store, "%s\n", argv[ i ] );
 921                                         i += 1;
 922                                 }
 923
 924                                 i --;
 925                         }
 926                 }
 927
 928                 if ( consumer != NULL && store == NULL )
 929                 {
 930                         // Get melt's properties
 931                         mlt_properties melt_props = MLT_PRODUCER_PROPERTIES( melt );
 932
 933                         // Get the last group
 934                         mlt_properties group = mlt_properties_get_data( melt_props, "group", 0 );
 935
 936                         // Apply group settings
 937                         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 938                         mlt_properties_inherit( properties, group );
 939
 940                         // Connect consumer to melt
 941                         mlt_consumer_connect( consumer, MLT_PRODUCER_SERVICE( melt ) );
 942
 943                         // Start the consumer
 944                         mlt_events_listen( properties, consumer, "consumer-fatal-error", ( mlt_listener )on_fatal_error );
 945                         if ( mlt_consumer_start( consumer ) == 0 )
 946                         {
 947                                 // Try to exit gracefully upon these signals
 948                                 signal( SIGINT, stop_handler );
 949                                 signal( SIGTERM, stop_handler );
 950 #ifndef WIN32
 951                                 signal( SIGHUP, stop_handler );
 952                                 signal( SIGPIPE, stop_handler );
 953 #endif
 954
 955                                 // Transport functionality
 956                                 transport( melt, consumer );
 957
 958                                 // Stop the consumer
 959                                 mlt_consumer_stop( consumer );
 960                         }
 961                 }
 962                 else if ( store != NULL && store != stdout && name != NULL )
 963                 {
 964                         fprintf( stderr, "Project saved as %s.\n", name );
 965                         fclose( store );
 966                 }
 967         }
 968         else
 969         {
 970                 show_usage( argv[0] );
 971         }
 972
 973         // Disconnect producer from consumer to prevent ref cycles from closing services
 974         if ( consumer )
 975                 mlt_consumer_connect( consumer, NULL );
 976
 977         // Close the producer
 978         if ( melt != NULL )
 979                 mlt_producer_close( melt );
 980
 981         // Close the consumer
 982         if ( consumer != NULL )
 983                 mlt_consumer_close( consumer );
 984
 985         // Close the factory
 986         mlt_profile_close( profile );
 987
 988 exit_factory:
 989
 990         mlt_factory_close( );
 991
 992         return 0;
 993 }