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

   1 /*
   2  * melt.c -- MLT command line utility
   3  * Copyright (C) 2002-2011 Ushodaya Enterprises Limited
   4  * Authors: Charles Yates <charles.yates@pandora.be>
   5  *          Dan Dennedy <dan@dennedy.org>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software Foundation,
  19  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20  */
  21
  22 #ifndef _GNU_SOURCE
  23 #define _GNU_SOURCE
  24 #endif
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <sched.h>
  29 #include <libgen.h>
  30 #include <limits.h>
  31
  32 #include <framework/mlt.h>
  33
  34 #if defined(__DARWIN__) || defined(WIN32)
  35 #include <SDL.h>
  36 #endif
  37
  38 #include "io.h"
  39
  40 static void transport_action( mlt_producer producer, char *value )
  41 {
  42         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
  43         mlt_multitrack multitrack = mlt_properties_get_data( properties, "multitrack", NULL );
  44         mlt_consumer consumer = mlt_properties_get_data( properties, "transport_consumer", NULL );
  45         mlt_properties jack = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES( consumer ), "jack_filter", NULL );
  46         mlt_position position = mlt_producer_position( producer );
  47
  48         mlt_properties_set_int( properties, "stats_off", 1 );
  49
  50         if ( strlen( value ) == 1 )
  51         {
  52                 switch( value[ 0 ] )
  53                 {
  54                         case 'q':
  55                         case 'Q':
  56                                 mlt_properties_set_int( properties, "done", 1 );
  57                                 mlt_events_fire( jack, "jack-stop", NULL );
  58                                 break;
  59                         case '0':
  60                                 position = 0;
  61                                 mlt_producer_set_speed( producer, 1 );
  62                                 mlt_producer_seek( producer, position );
  63                                 mlt_consumer_purge( consumer );
  64                                 mlt_events_fire( jack, "jack-seek", &position, NULL );
  65                                 break;
  66                         case '1':
  67                                 mlt_producer_set_speed( producer, -10 );
  68                                 break;
  69                         case '2':
  70                                 mlt_producer_set_speed( producer, -5 );
  71                                 break;
  72                         case '3':
  73                                 mlt_producer_set_speed( producer, -2 );
  74                                 break;
  75                         case '4':
  76                                 mlt_producer_set_speed( producer, -1 );
  77                                 break;
  78                         case '5':
  79                                 mlt_producer_set_speed( producer, 0 );
  80                                 mlt_consumer_purge( consumer );
  81                                 mlt_events_fire( jack, "jack-stop", NULL );
  82                                 break;
  83                         case '6':
  84                         case ' ':
  85                                 if ( !jack || mlt_producer_get_speed( producer ) != 0 )
  86                                         mlt_producer_set_speed( producer, 1 );
  87                                 mlt_consumer_purge( consumer );
  88                                 mlt_events_fire( jack, "jack-start", NULL );
  89                                 break;
  90                         case '7':
  91                                 mlt_producer_set_speed( producer, 2 );
  92                                 break;
  93                         case '8':
  94                                 mlt_producer_set_speed( producer, 5 );
  95                                 break;
  96                         case '9':
  97                                 mlt_producer_set_speed( producer, 10 );
  98                                 break;
  99                         case 'd':
 100                                 if ( multitrack != NULL )
 101                                 {
 102                                         int i = 0;
 103                                         mlt_position last = -1;
 104                                         fprintf( stderr, "\n" );
 105                                         for ( i = 0; 1; i ++ )
 106                                         {
 107                                                 position = mlt_multitrack_clip( multitrack, mlt_whence_relative_start, i );
 108                                                 if ( position == last )
 109                                                         break;
 110                                                 last = position;
 111                                                 fprintf( stderr, "%d: %d\n", i, (int)position );
 112                                         }
 113                                 }
 114                                 break;
 115
 116                         case 'g':
 117                                 if ( multitrack != NULL )
 118                                 {
 119                                         position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, 0 );
 120                                         mlt_producer_seek( producer, position );
 121                                         mlt_consumer_purge( consumer );
 122                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 123                                 }
 124                                 break;
 125                         case 'H':
 126                                 if ( producer != NULL )
 127                                 {
 128                                         position -= mlt_producer_get_fps( producer ) * 60;
 129                                         mlt_consumer_purge( consumer );
 130                                         mlt_producer_seek( producer, position );
 131                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 132                                 }
 133                                 break;
 134                         case 'h':
 135                                 if ( producer != NULL )
 136                                 {
 137                                         position--;
 138                                         mlt_producer_set_speed( producer, 0 );
 139                                         mlt_consumer_purge( consumer );
 140                                         mlt_producer_seek( producer, position );
 141                                         mlt_events_fire( jack, "jack-stop", NULL );
 142                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 143                                 }
 144                                 break;
 145                         case 'j':
 146                                 if ( multitrack != NULL )
 147                                 {
 148                                         position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, 1 );
 149                                         mlt_consumer_purge( consumer );
 150                                         mlt_producer_seek( producer, position );
 151                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 152                                 }
 153                                 break;
 154                         case 'k':
 155                                 if ( multitrack != NULL )
 156                                 {
 157                                         position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, -1 );
 158                                         mlt_consumer_purge( consumer );
 159                                         mlt_producer_seek( producer, position );
 160                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 161                                 }
 162                                 break;
 163                         case 'l':
 164                                 if ( producer != NULL )
 165                                 {
 166                                         position++;
 167                                         mlt_consumer_purge( consumer );
 168                                         if ( mlt_producer_get_speed( producer ) != 0 )
 169                                         {
 170                                                 mlt_producer_set_speed( producer, 0 );
 171                                                 mlt_events_fire( jack, "jack-stop", NULL );
 172                                         }
 173                                         else
 174                                         {
 175                                                 mlt_producer_seek( producer, position );
 176                                                 mlt_events_fire( jack, "jack-seek", &position, NULL );
 177                                         }
 178                                 }
 179                                 break;
 180                         case 'L':
 181                                 if ( producer != NULL )
 182                                 {
 183                                         position += mlt_producer_get_fps( producer ) * 60;
 184                                         mlt_consumer_purge( consumer );
 185                                         mlt_producer_seek( producer, position );
 186                                         mlt_events_fire( jack, "jack-seek", &position, NULL );
 187                                 }
 188                                 break;
 189                 }
 190
 191                 mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 );
 192         }
 193
 194         mlt_properties_set_int( properties, "stats_off", 0 );
 195 }
 196
 197 static void on_jack_started( mlt_properties owner, mlt_consumer consumer, mlt_position *position )
 198 {
 199         mlt_producer producer = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES(consumer), "transport_producer", NULL );
 200         if ( producer )
 201         {
 202                 if ( mlt_producer_get_speed( producer ) != 0 )
 203                 {
 204                         mlt_properties jack = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES( consumer ), "jack_filter", NULL );
 205                         mlt_events_fire( jack, "jack-stop", NULL );
 206                 }
 207                 else
 208                 {
 209                         mlt_producer_set_speed( producer, 1 );
 210                         mlt_consumer_purge( consumer );
 211                         mlt_producer_seek( producer, *position );
 212                         mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 );
 213                 }
 214         }
 215 }
 216
 217 static void on_jack_stopped( mlt_properties owner, mlt_consumer consumer, mlt_position *position )
 218 {
 219         mlt_producer producer = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES(consumer), "transport_producer", NULL );
 220         if ( producer )
 221         {
 222                 mlt_producer_set_speed( producer, 0 );
 223                 mlt_consumer_purge( consumer );
 224                 mlt_producer_seek( producer, *position );
 225                 mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 );
 226         }
 227 }
 228
 229 static void setup_jack_transport( mlt_consumer consumer, mlt_profile profile )
 230 {
 231         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 232         mlt_filter jack = mlt_factory_filter( profile, "jackrack", NULL );
 233         mlt_properties jack_properties = MLT_FILTER_PROPERTIES(jack);
 234
 235         mlt_service_attach( MLT_CONSUMER_SERVICE(consumer), jack );
 236         mlt_properties_set_int( properties, "audio_off", 1 );
 237         mlt_properties_set_data( properties, "jack_filter", jack, 0, (mlt_destructor) mlt_filter_close, NULL );
 238 //      mlt_properties_set( jack_properties, "out_1", "system:playback_1" );
 239 //      mlt_properties_set( jack_properties, "out_2", "system:playback_2" );
 240         mlt_events_listen( jack_properties, consumer, "jack-started", (mlt_listener) on_jack_started );
 241         mlt_events_listen( jack_properties, consumer, "jack-stopped", (mlt_listener) on_jack_stopped );
 242 }
 243
 244 static mlt_consumer create_consumer( mlt_profile profile, char *id )
 245 {
 246         char *myid = id ? strdup( id ) : NULL;
 247         char *arg = myid ? strchr( myid, ':' ) : NULL;
 248         if ( arg != NULL )
 249                 *arg ++ = '\0';
 250         mlt_consumer consumer = mlt_factory_consumer( profile, myid, arg );
 251         if ( consumer != NULL )
 252         {
 253                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 254                 mlt_properties_set_data( properties, "transport_callback", transport_action, 0, NULL, NULL );
 255         }
 256         if ( myid )
 257                 free( myid );
 258         return consumer;
 259 }
 260
 261 static void load_consumer( mlt_consumer *consumer, mlt_profile profile, int argc, char **argv )
 262 {
 263         int i;
 264         for ( i = 1; i < argc; i ++ )
 265         {
 266                 if ( !strcmp( argv[ i ], "-consumer" ) )
 267                 {
 268                         if ( *consumer )
 269                                 mlt_consumer_close( *consumer );
 270                         *consumer = create_consumer( profile, argv[ ++ i ] );
 271                         if ( *consumer )
 272                         {
 273                                 mlt_properties properties = MLT_CONSUMER_PROPERTIES( *consumer );
 274                                 while ( argv[ i + 1 ] != NULL && strstr( argv[ i + 1 ], "=" ) )
 275                                         mlt_properties_parse( properties, argv[ ++ i ] );
 276                         }
 277                 }
 278         }
 279 }
 280
 281 #if defined(__DARWIN__) || defined(WIN32)
 282
 283 static void event_handling( mlt_producer producer, mlt_consumer consumer )
 284 {
 285         SDL_Event event;
 286
 287         while ( SDL_PollEvent( &event ) )
 288         {
 289                 switch( event.type )
 290                 {
 291                         case SDL_QUIT:
 292                                 mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( consumer ), "done", 1 );
 293                                 break;
 294
 295                         case SDL_KEYDOWN:
 296                                 if ( event.key.keysym.unicode < 0x80 && event.key.keysym.unicode > 0 )
 297                                 {
 298                                         char keyboard[ 2 ] = { event.key.keysym.unicode, 0 };
 299                                         transport_action( producer, keyboard );
 300                                 }
 301                                 break;
 302                 }
 303         }
 304 }
 305
 306 #endif
 307
 308 static void transport( mlt_producer producer, mlt_consumer consumer )
 309 {
 310         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 311         int silent = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "silent" );
 312         int progress = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "progress" );
 313         struct timespec tm = { 0, 40000 };
 314         int total_length = mlt_producer_get_length( producer );
 315         int last_position = 0;
 316
 317         if ( mlt_properties_get_int( properties, "done" ) == 0 && !mlt_consumer_is_stopped( consumer ) )
 318         {
 319                 if ( !silent && !progress )
 320                 {
 321                         term_init( );
 322
 323                         fprintf( stderr, "+-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+\n" );
 324                         fprintf( stderr, "|1=-10| |2= -5| |3= -2| |4= -1| |5=  0| |6=  1| |7=  2| |8=  5| |9= 10|\n" );
 325                         fprintf( stderr, "+-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+\n" );
 326
 327                         fprintf( stderr, "+---------------------------------------------------------------------+\n" );
 328                         fprintf( stderr, "|               H = back 1 minute,  L = forward 1 minute              |\n" );
 329                         fprintf( stderr, "|                 h = previous frame,  l = next frame                 |\n" );
 330                         fprintf( stderr, "|           g = start of clip, j = next clip, k = previous clip       |\n" );
 331                         fprintf( stderr, "|                0 = restart, q = quit, space = play                  |\n" );
 332                         fprintf( stderr, "+---------------------------------------------------------------------+\n" );
 333                 }
 334
 335                 while( mlt_properties_get_int( properties, "done" ) == 0 && !mlt_consumer_is_stopped( consumer ) )
 336                 {
 337                         int value = ( silent || progress )? -1 : term_read( );
 338
 339                         if ( value != -1 )
 340                         {
 341                                 char string[ 2 ] = { value, 0 };
 342                                 transport_action( producer, string );
 343                         }
 344
 345 #if defined(__DARWIN__) || defined(WIN32)
 346                         event_handling( producer, consumer );
 347 #endif
 348
 349                         if ( !silent && mlt_properties_get_int( properties, "stats_off" ) == 0 )
 350                         {
 351                                 if ( progress )
 352                                 {
 353                                         int current_position = mlt_producer_position( producer );
 354                                         if ( current_position > last_position )
 355                                         {
 356                                                 fprintf( stderr, "Current Frame: %10d, percentage: %10d\r",
 357                                                         current_position, 100 * current_position / total_length );
 358                                                 last_position = current_position;
 359                                         }
 360                                 }
 361                                 else
 362                                 {
 363                                         fprintf( stderr, "Current Position: %10d\r", (int)mlt_consumer_position( consumer ) );
 364                                 }
 365                         }
 366
 367                         if ( silent || progress )
 368                                 nanosleep( &tm, NULL );
 369                 }
 370
 371                 if ( !silent )
 372                         fprintf( stderr, "\n" );
 373         }
 374 }
 375
 376 static void show_usage( char *program_name )
 377 {
 378         fprintf( stderr,
 379 "Usage: %s [options] [producer [name=value]* ]+\n"
 380 "Options:\n"
 381 "  -attach filter[:arg] [name=value]*       Attach a filter to the output\n"
 382 "  -attach-cut filter[:arg] [name=value]*   Attach a filter to a cut\n"
 383 "  -attach-track filter[:arg] [name=value]* Attach a filter to a track\n"
 384 "  -attach-clip filter[:arg] [name=value]*  Attach a filter to a producer\n"
 385 "  -audio-track | -hide-video               Add an audio-only track\n"
 386 "  -blank frames                            Add blank silence to a track\n"
 387 "  -consumer id[:arg] [name=value]*         Set the consumer (sink)\n"
 388 "  -debug                                   Set the logging level to debug\n"
 389 "  -filter filter[:arg] [name=value]*       Add a filter to the current track\n"
 390 "  -group [name=value]*                     Apply properties repeatedly\n"
 391 "  -help                                    Show this message\n"
 392 "  -join clips                              Join multiple clips into one cut\n"
 393 "  -mix length                              Add a mix between the last two cuts\n"
 394 "  -mixer transition                        Add a transition to the mix\n"
 395 "  -null-track | -hide-track                Add a hidden track\n"
 396 "  -profile name                            Set the processing settings\n"
 397 "  -progress                                Display progress along with position\n"
 398 "  -remove                                  Remove the most recent cut\n"
 399 "  -repeat times                            Repeat the last cut\n"
 400 "  -query                                   List all of the registered services\n"
 401 "  -query \"consumers\" | \"consumer\"=id       List consumers or show info about one\n"
 402 "  -query \"filters\" | \"filter\"=id           List filters or show info about one\n"
 403 "  -query \"producers\" | \"producer\"=id       List producers or show info about one\n"
 404 "  -query \"transitions\" | \"transition\"=id   List transitions, show info about one\n"
 405 "  -query \"profiles\" | \"profile\"=id         List profiles, show info about one\n"
 406 "  -query \"presets\" | \"preset\"=id           List presets, show info about one\n"
 407 "  -query \"formats\"                         List audio/video formats\n"
 408 "  -query \"audio_codecs\"                    List audio codecs\n"
 409 "  -query \"video_codecs\"                    List video codecs\n"
 410 "  -serialise [filename]                    Write the commands to a text file\n"
 411 "  -silent                                  Do not display position/transport\n"
 412 "  -split relative-frame                    Split the last cut into two cuts\n"
 413 "  -swap                                    Rearrange the last two cuts\n"
 414 "  -track                                   Add a track\n"
 415 "  -transition id[:arg] [name=value]*       Add a transition\n"
 416 "  -verbose                                 Set the logging level to verbose\n"
 417 "  -version                                 Show the version and copyright\n"
 418 "  -video-track | -hide-audio               Add a video-only track\n"
 419 "For more help: <http://www.mltframework.org/>\n",
 420         basename( program_name ) );
 421 }
 422
 423 static void guess_profile( mlt_producer melt, mlt_profile profile )
 424 {
 425         mlt_frame fr = NULL;
 426         uint8_t *buffer;
 427         mlt_image_format fmt = mlt_image_yuv422;
 428         mlt_properties p;
 429         int w = profile->width;
 430         int h = profile->height;
 431
 432         if ( ! mlt_service_get_frame( MLT_PRODUCER_SERVICE(melt), &fr, 0 ) && fr )
 433         {
 434                 mlt_properties_set_double( MLT_FRAME_PROPERTIES( fr ), "consumer_aspect_ratio", mlt_profile_sar( profile ) );
 435                 if ( ! mlt_frame_get_image( fr, &buffer, &fmt, &w, &h, 0 ) )
 436                 {
 437                         // Some source properties are not exposed until after the first get_image call.
 438                         mlt_frame_close( fr );
 439                         mlt_service_get_frame( MLT_PRODUCER_SERVICE(melt), &fr, 0 );
 440                         p = MLT_FRAME_PROPERTIES( fr );
 441 //                      mlt_properties_dump(p, stderr);
 442                         if ( mlt_properties_get_int( p, "meta.media.frame_rate_den" ) && mlt_properties_get_int( p, "meta.media.sample_aspect_den" ) )
 443                         {
 444                                 profile->width = mlt_properties_get_int( p, "meta.media.width" );
 445                                 profile->height = mlt_properties_get_int( p, "meta.media.height" );
 446                                 profile->progressive = mlt_properties_get_int( p, "meta.media.progressive" );
 447                                 profile->frame_rate_num = mlt_properties_get_int( p, "meta.media.frame_rate_num" );
 448                                 profile->frame_rate_den = mlt_properties_get_int( p, "meta.media.frame_rate_den" );
 449                                 // AVCHD is mis-reported as double frame rate.
 450                                 if ( profile->progressive == 0 && (
 451                                      profile->frame_rate_num / profile->frame_rate_den == 50 ||
 452                                      profile->frame_rate_num / profile->frame_rate_den == 59 ) )
 453                                         profile->frame_rate_num /= 2;
 454                                 profile->sample_aspect_num = mlt_properties_get_int( p, "meta.media.sample_aspect_num" );
 455                                 profile->sample_aspect_den = mlt_properties_get_int( p, "meta.media.sample_aspect_den" );
 456                                 profile->colorspace = mlt_properties_get_int( p, "meta.media.colorspace" );
 457                                 profile->display_aspect_num = (int) ( (double) profile->sample_aspect_num * profile->width / profile->sample_aspect_den + 0.5 );
 458                                 profile->display_aspect_den = profile->height;
 459                                 free( profile->description );
 460                                 profile->description = strdup( "automatic" );
 461                                 profile->is_explicit = 0;
 462                         }
 463                 }
 464         }
 465         mlt_frame_close( fr );
 466         mlt_producer_seek( melt, 0 );
 467 }
 468
 469 static void query_metadata( mlt_repository repo, mlt_service_type type, const char *typestr, char *id )
 470 {
 471         mlt_properties metadata = mlt_repository_metadata( repo, type, id );
 472         if ( metadata )
 473         {
 474                 char *s = mlt_properties_serialise_yaml( metadata );
 475                 fprintf( stderr, "%s", s );
 476                 free( s );
 477         }
 478         else
 479         {
 480                 fprintf( stderr, "# No metadata for %s \"%s\"\n", typestr, id );
 481         }
 482 }
 483
 484 static void query_services( mlt_repository repo, mlt_service_type type )
 485 {
 486         mlt_properties services = NULL;
 487         const char *typestr = NULL;
 488         switch ( type )
 489         {
 490                 case consumer_type:
 491                         services = mlt_repository_consumers( repo );
 492                         typestr = "consumers";
 493                         break;
 494                 case filter_type:
 495                         services = mlt_repository_filters( repo );
 496                         typestr = "filters";
 497                         break;
 498                 case producer_type:
 499                         services = mlt_repository_producers( repo );
 500                         typestr = "producers";
 501                         break;
 502                 case transition_type:
 503                         services = mlt_repository_transitions( repo );
 504                         typestr = "transitions";
 505                         break;
 506                 default:
 507                         return;
 508         }
 509         fprintf( stderr, "---\n%s:\n", typestr );
 510         if ( services )
 511         {
 512                 int j;
 513                 for ( j = 0; j < mlt_properties_count( services ); j++ )
 514                         fprintf( stderr, "  - %s\n", mlt_properties_get_name( services, j ) );
 515         }
 516         fprintf( stderr, "...\n" );
 517 }
 518
 519 static void query_profiles()
 520 {
 521         mlt_properties profiles = mlt_profile_list();
 522         fprintf( stderr, "---\nprofiles:\n" );
 523         if ( profiles )
 524         {
 525                 int j;
 526                 for ( j = 0; j < mlt_properties_count( profiles ); j++ )
 527                         fprintf( stderr, "  - %s\n", mlt_properties_get_name( profiles, j ) );
 528         }
 529         fprintf( stderr, "...\n" );
 530         mlt_properties_close( profiles );
 531 }
 532
 533 static void query_profile( const char *id )
 534 {
 535         mlt_properties profiles = mlt_profile_list();
 536         mlt_properties profile = mlt_properties_get_data( profiles, id, NULL );
 537         if ( profile )
 538         {
 539                 char *s = mlt_properties_serialise_yaml( profile );
 540                 fprintf( stderr, "%s", s );
 541                 free( s );
 542         }
 543         else
 544         {
 545                 fprintf( stderr, "# No metadata for profile \"%s\"\n", id );
 546         }
 547         mlt_properties_close( profiles );
 548 }
 549
 550 static void query_presets()
 551 {
 552         mlt_properties presets = mlt_repository_presets();
 553         fprintf( stderr, "---\npresets:\n" );
 554         if ( presets )
 555         {
 556                 int j;
 557                 for ( j = 0; j < mlt_properties_count( presets ); j++ )
 558                         fprintf( stderr, "  - %s\n", mlt_properties_get_name( presets, j ) );
 559         }
 560         fprintf( stderr, "...\n" );
 561         mlt_properties_close( presets );
 562 }
 563
 564 static void query_preset( const char *id )
 565 {
 566         mlt_properties presets = mlt_repository_presets();
 567         mlt_properties preset = mlt_properties_get_data( presets, id, NULL );
 568         if ( preset )
 569         {
 570                 char *s = mlt_properties_serialise_yaml( preset );
 571                 fprintf( stderr, "%s", s );
 572                 free( s );
 573         }
 574         else
 575         {
 576                 fprintf( stderr, "# No metadata for preset \"%s\"\n", id );
 577         }
 578         mlt_properties_close( presets );
 579 }
 580
 581 static void query_formats( )
 582 {
 583         mlt_consumer consumer = mlt_factory_consumer( NULL, "avformat", NULL );
 584         if ( consumer )
 585         {
 586                 mlt_properties_set( MLT_CONSUMER_PROPERTIES(consumer), "f", "list" );
 587                 mlt_consumer_start( consumer );
 588                 mlt_consumer_close( consumer );
 589         }
 590         else
 591         {
 592                 fprintf( stderr, "# No formats - failed to load avformat consumer\n" );
 593         }
 594 }
 595
 596 static void query_acodecs( )
 597 {
 598         mlt_consumer consumer = mlt_factory_consumer( NULL, "avformat", NULL );
 599         if ( consumer )
 600         {
 601                 mlt_properties_set( MLT_CONSUMER_PROPERTIES(consumer), "acodec", "list" );
 602                 mlt_consumer_start( consumer );
 603                 mlt_consumer_close( consumer );
 604         }
 605         else
 606         {
 607                 fprintf( stderr, "# No audio codecs - failed to load avformat consumer\n" );
 608         }
 609 }
 610
 611 static void query_vcodecs( )
 612 {
 613         mlt_consumer consumer = mlt_factory_consumer( NULL, "avformat", NULL );
 614         if ( consumer )
 615         {
 616                 mlt_properties_set( MLT_CONSUMER_PROPERTIES(consumer), "vcodec", "list" );
 617                 mlt_consumer_start( consumer );
 618                 mlt_consumer_close( consumer );
 619         }
 620         else
 621         {
 622                 fprintf( stderr, "# No video codecs - failed to load avformat consumer\n" );
 623         }
 624 }
 625
 626 static void on_fatal_error( mlt_properties owner, mlt_consumer consumer )
 627 {
 628         mlt_consumer_stop( consumer );
 629         exit( EXIT_FAILURE );
 630 }
 631
 632 int main( int argc, char **argv )
 633 {
 634         int i;
 635         mlt_consumer consumer = NULL;
 636         mlt_producer melt = NULL;
 637         FILE *store = NULL;
 638         char *name = NULL;
 639         mlt_profile profile = NULL;
 640         int is_progress = 0;
 641         int is_silent = 0;
 642         mlt_profile backup_profile;
 643
 644         // Construct the factory
 645         mlt_repository repo = mlt_factory_init( NULL );
 646
 647 #ifdef WIN32
 648         is_silent = 1;
 649 #endif
 650
 651         for ( i = 1; i < argc; i ++ )
 652         {
 653                 // Check for serialisation switch
 654                 if ( !strcmp( argv[ i ], "-serialise" ) )
 655                 {
 656                         name = argv[ ++ i ];
 657                         if ( name != NULL && strstr( name, ".melt" ) )
 658                                 store = fopen( name, "w" );
 659                         else
 660                         {
 661                                 if ( name == NULL || name[0] == '-' )
 662                                         store = stdout;
 663                                 name = NULL;
 664                         }
 665                 }
 666                 // Look for the profile option
 667                 else if ( !strcmp( argv[ i ], "-profile" ) )
 668                 {
 669                         const char *pname = argv[ ++ i ];
 670                         if ( pname && pname[0] != '-' )
 671                                 profile = mlt_profile_init( pname );
 672                 }
 673                 else if ( !strcmp( argv[ i ], "-progress" ) )
 674                 {
 675                         is_progress = 1;
 676                 }
 677                 // Look for the query option
 678                 else if ( !strcmp( argv[ i ], "-query" ) )
 679                 {
 680                         const char *pname = argv[ ++ i ];
 681                         if ( pname && pname[0] != '-' )
 682                         {
 683                                 if ( !strcmp( pname, "consumers" ) || !strcmp( pname, "consumer" ) )
 684                                         query_services( repo, consumer_type );
 685                                 else if ( !strcmp( pname, "filters" ) || !strcmp( pname, "filter" ) )
 686                                         query_services( repo, filter_type );
 687                                 else if ( !strcmp( pname, "producers" ) || !strcmp( pname, "producer" ) )
 688                                         query_services( repo, producer_type );
 689                                 else if ( !strcmp( pname, "transitions" ) || !strcmp( pname, "transition" ) )
 690                                         query_services( repo, transition_type );
 691                                 else if ( !strcmp( pname, "profiles" ) || !strcmp( pname, "profile" ) )
 692                                         query_profiles();
 693                                 else if ( !strcmp( pname, "presets" ) || !strcmp( pname, "preset" ) )
 694                                         query_presets();
 695                                 else if ( !strncmp( pname, "format", 6 ) )
 696                                         query_formats();
 697                                 else if ( !strncmp( pname, "acodec", 6 ) || !strcmp( pname, "audio_codecs" ) )
 698                                         query_acodecs();
 699                                 else if ( !strncmp( pname, "vcodec", 6 ) || !strcmp( pname, "video_codecs" ) )
 700                                         query_vcodecs();
 701
 702                                 else if ( !strncmp( pname, "consumer=", 9 ) )
 703                                         query_metadata( repo, consumer_type, "consumer", strchr( pname, '=' ) + 1 );
 704                                 else if ( !strncmp( pname, "filter=", 7 ) )
 705                                         query_metadata( repo, filter_type, "filter", strchr( pname, '=' ) + 1 );
 706                                 else if ( !strncmp( pname, "producer=", 9 ) )
 707                                         query_metadata( repo, producer_type, "producer", strchr( pname, '=' ) + 1 );
 708                                 else if ( !strncmp( pname, "transition=", 11 ) )
 709                                         query_metadata( repo, transition_type, "transition", strchr( pname, '=' ) + 1 );
 710                                 else if ( !strncmp( pname, "profile=", 8 ) )
 711                                         query_profile( strchr( pname, '=' ) + 1 );
 712                                 else if ( !strncmp( pname, "preset=", 7 ) )
 713                                         query_preset( strchr( pname, '=' ) + 1 );
 714                                 else
 715                                         goto query_all;
 716                         }
 717                         else
 718                         {
 719 query_all:
 720                                 query_services( repo, consumer_type );
 721                                 query_services( repo, filter_type );
 722                                 query_services( repo, producer_type );
 723                                 query_services( repo, transition_type );
 724                                 fprintf( stderr, "# You can query the metadata for a specific service using:\n"
 725                                         "# -query <type>=<identifer>\n"
 726                                         "# where <type> is one of: consumer, filter, producer, or transition.\n" );
 727                         }
 728                         goto exit_factory;
 729                 }
 730                 else if ( !strcmp( argv[ i ], "-silent" ) )
 731                 {
 732                         is_silent = 1;
 733                 }
 734                 else if ( !strcmp( argv[ i ], "-verbose" ) )
 735                 {
 736                         mlt_log_set_level( MLT_LOG_VERBOSE );
 737                 }
 738                 else if ( !strcmp( argv[ i ], "-version" ) || !strcmp( argv[ i ], "--version" ) )
 739                 {
 740                         fprintf( stderr, "MLT %s " VERSION "\n"
 741                                 "Copyright (C) 2002-2011 Ushodaya Enterprises Limited\n"
 742                                 "<http://www.mltframework.org/>\n"
 743                                 "This is free software; see the source for copying conditions.  There is NO\n"
 744                                 "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n",
 745                                 basename( argv[0] ) );
 746                         goto exit_factory;
 747                 }
 748                 else if ( !strcmp( argv[ i ], "-debug" ) )
 749                 {
 750                         mlt_log_set_level( MLT_LOG_DEBUG );
 751                 }
 752         }
 753
 754         // Create profile if not set explicitly
 755         if ( getenv( "MLT_PROFILE" ) )
 756                 profile = mlt_profile_init( NULL );
 757         if ( profile == NULL )
 758                 profile = mlt_profile_init( NULL );
 759         else
 760                 profile->is_explicit = 1;
 761
 762         // Look for the consumer option to load profile settings from consumer properties
 763         backup_profile = mlt_profile_clone( profile );
 764         load_consumer( &consumer, profile, argc, argv );
 765
 766         // If the consumer changed the profile, then it is explicit.
 767         if ( backup_profile && !profile->is_explicit && (
 768              profile->width != backup_profile->width ||
 769              profile->height != backup_profile->height ||
 770              profile->sample_aspect_num != backup_profile->sample_aspect_num ||
 771              profile->sample_aspect_den != backup_profile->sample_aspect_den ||
 772              profile->frame_rate_den != backup_profile->frame_rate_den ||
 773              profile->frame_rate_num != backup_profile->frame_rate_num ||
 774              profile->colorspace != backup_profile->colorspace ) )
 775                 profile->is_explicit = 1;
 776         mlt_profile_close( backup_profile );
 777
 778         // Get melt producer
 779         if ( argc > 1 )
 780                 melt = mlt_factory_producer( profile, "melt", &argv[ 1 ] );
 781
 782         if ( melt )
 783         {
 784                 // Generate an automatic profile if needed.
 785                 if ( ! profile->is_explicit )
 786                 {
 787                         guess_profile( melt, profile );
 788                         mlt_producer_close( melt );
 789                         melt = mlt_factory_producer( profile, "melt", &argv[ 1 ] );
 790                 }
 791
 792                 // Reload the consumer with the fully qualified profile.
 793                 // The producer or guess_profile could have changed the profile.
 794                 load_consumer( &consumer, profile, argc, argv );
 795
 796                 // If we have no consumer, default to sdl
 797                 if ( store == NULL && consumer == NULL )
 798                         consumer = create_consumer( profile, NULL );
 799         }
 800
 801         // Set transport properties on consumer and produder
 802         if ( consumer != NULL && melt != NULL )
 803         {
 804                 mlt_properties_set_data( MLT_CONSUMER_PROPERTIES( consumer ), "transport_producer", melt, 0, NULL, NULL );
 805                 mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( melt ), "transport_consumer", consumer, 0, NULL, NULL );
 806                 if ( is_progress )
 807                         mlt_properties_set_int(  MLT_CONSUMER_PROPERTIES( consumer ), "progress", is_progress );
 808                 if ( is_silent )
 809                         mlt_properties_set_int(  MLT_CONSUMER_PROPERTIES( consumer ), "silent", is_silent );
 810         }
 811
 812         if ( argc > 1 && melt != NULL && mlt_producer_get_length( melt ) > 0 )
 813         {
 814                 // Parse the arguments
 815                 for ( i = 1; i < argc; i ++ )
 816                 {
 817                         if ( !strcmp( argv[ i ], "-jack" ) )
 818                         {
 819                                 setup_jack_transport( consumer, profile );
 820                         }
 821                         else if ( !strcmp( argv[ i ], "-serialise" ) )
 822                         {
 823                                 if ( store != stdout )
 824                                         i ++;
 825                         }
 826                         else
 827                         {
 828                                 if ( store != NULL )
 829                                         fprintf( store, "%s\n", argv[ i ] );
 830
 831                                 i ++;
 832
 833                                 while ( argv[ i ] != NULL && argv[ i ][ 0 ] != '-' )
 834                                 {
 835                                         if ( store != NULL )
 836                                                 fprintf( store, "%s\n", argv[ i ] );
 837                                         i += 1;
 838                                 }
 839
 840                                 i --;
 841                         }
 842                 }
 843
 844                 if ( consumer != NULL && store == NULL )
 845                 {
 846                         // Get melt's properties
 847                         mlt_properties melt_props = MLT_PRODUCER_PROPERTIES( melt );
 848
 849                         // Get the last group
 850                         mlt_properties group = mlt_properties_get_data( melt_props, "group", 0 );
 851
 852                         // Apply group settings
 853                         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 854                         mlt_properties_inherit( properties, group );
 855
 856                         // Connect consumer to melt
 857                         mlt_consumer_connect( consumer, MLT_PRODUCER_SERVICE( melt ) );
 858
 859                         // Start the consumer
 860                         mlt_events_listen( properties, consumer, "consumer-fatal-error", ( mlt_listener )on_fatal_error );
 861                         if ( mlt_consumer_start( consumer ) == 0 )
 862                         {
 863                                 // Transport functionality
 864                                 transport( melt, consumer );
 865
 866                                 // Stop the consumer
 867                                 mlt_consumer_stop( consumer );
 868                         }
 869                 }
 870                 else if ( store != NULL && store != stdout && name != NULL )
 871                 {
 872                         fprintf( stderr, "Project saved as %s.\n", name );
 873                         fclose( store );
 874                 }
 875         }
 876         else
 877         {
 878                 show_usage( argv[0] );
 879         }
 880
 881         // Close the producer
 882         if ( melt != NULL )
 883                 mlt_producer_close( melt );
 884
 885         // Close the consumer
 886         if ( consumer != NULL )
 887                 mlt_consumer_close( consumer );
 888
 889         // Close the factory
 890         mlt_profile_close( profile );
 891
 892 exit_factory:
 893
 894         mlt_factory_close( );
 895
 896         return 0;
 897 }