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

   1 /*
   2  * producer_melt.c -- load from melt command line syntax
   3  * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
   4  * Author: Charles Yates <charles.yates@pandora.be>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24
  25 #include <framework/mlt.h>
  26
  27 mlt_producer producer_melt_init( mlt_profile profile, mlt_service_type type, const char *id, char **argv );
  28
  29 mlt_producer producer_melt_file_init( mlt_profile profile, mlt_service_type type, const char *id, char *file )
  30 {
  31         FILE *input = fopen( file, "r" );
  32         char **args = calloc( sizeof( char * ), 1000 );
  33         int count = 0;
  34         char temp[ 2048 ];
  35
  36         if ( input != NULL )
  37         {
  38                 while( fgets( temp, 2048, input ) )
  39                 {
  40                         temp[ strlen( temp ) - 1 ] = '\0';
  41                         if ( strcmp( temp, "" ) )
  42                                 args[ count ++ ] = strdup( temp );
  43                 }
  44         }
  45
  46         mlt_producer result = producer_melt_init( profile, type, id, args );
  47
  48         if ( result != NULL )
  49         {
  50                 mlt_properties properties = MLT_PRODUCER_PROPERTIES( result );
  51                 mlt_properties_set( properties, "resource", file );
  52         }
  53
  54         while( count -- )
  55                 free( args[ count ] );
  56         free( args );
  57
  58         return result;
  59 }
  60
  61 static void track_service( mlt_field field, void *service, mlt_destructor destructor )
  62 {
  63         mlt_properties properties = mlt_field_properties( field );
  64         int registered = mlt_properties_get_int( properties, "registered" );
  65         char *key = mlt_properties_get( properties, "registered" );
  66         mlt_properties_set_data( properties, key, service, 0, destructor, NULL );
  67         mlt_properties_set_int( properties, "registered", ++ registered );
  68 }
  69
  70 static mlt_producer create_producer( mlt_profile profile, mlt_field field, char *file )
  71 {
  72         mlt_producer result = mlt_factory_producer( profile, NULL, file );
  73
  74         if ( result != NULL )
  75                 track_service( field, result, ( mlt_destructor )mlt_producer_close );
  76
  77         return result;
  78 }
  79
  80 static mlt_filter create_attach( mlt_profile profile, mlt_field field, char *id, int track )
  81 {
  82         char *temp = strdup( id );
  83         char *arg = strchr( temp, ':' );
  84         if ( arg != NULL )
  85                 *arg ++ = '\0';
  86         mlt_filter filter = mlt_factory_filter( profile, temp, arg );
  87         if ( filter != NULL )
  88                 track_service( field, filter, ( mlt_destructor )mlt_filter_close );
  89         free( temp );
  90         return filter;
  91 }
  92
  93 static mlt_filter create_filter( mlt_profile profile, mlt_field field, char *id, int track )
  94 {
  95         char *temp = strdup( id );
  96         char *arg = strchr( temp, ':' );
  97         if ( arg != NULL )
  98                 *arg ++ = '\0';
  99         mlt_filter filter = mlt_factory_filter( profile, temp, arg );
 100         if ( filter != NULL )
 101         {
 102                 mlt_field_plant_filter( field, filter, track );
 103                 track_service( field, filter, ( mlt_destructor )mlt_filter_close );
 104         }
 105         free( temp );
 106         return filter;
 107 }
 108
 109 static mlt_transition create_transition( mlt_profile profile, mlt_field field, char *id, int track )
 110 {
 111         char *arg = strchr( id, ':' );
 112         if ( arg != NULL )
 113                 *arg ++ = '\0';
 114         mlt_transition transition = mlt_factory_transition( profile, id, arg );
 115         if ( transition != NULL )
 116         {
 117                 mlt_field_plant_transition( field, transition, track, track + 1 );
 118                 track_service( field, transition, ( mlt_destructor )mlt_transition_close );
 119         }
 120         return transition;
 121 }
 122
 123 mlt_producer producer_melt_init( mlt_profile profile, mlt_service_type type, const char *id, char **argv )
 124 {
 125         int i;
 126         int track = 0;
 127         mlt_producer producer = NULL;
 128         mlt_tractor mix = NULL;
 129         mlt_playlist playlist = mlt_playlist_init( );
 130         mlt_properties group = mlt_properties_new( );
 131         mlt_tractor tractor = mlt_tractor_new( );
 132         mlt_properties properties = MLT_TRACTOR_PROPERTIES( tractor );
 133         mlt_field field = mlt_tractor_field( tractor );
 134         mlt_properties field_properties = mlt_field_properties( field );
 135         mlt_multitrack multitrack = mlt_tractor_multitrack( tractor );
 136         char *title = NULL;
 137
 138         // Assistance for template construction (allows -track usage to specify the first track)
 139         mlt_properties_set_int( MLT_PLAYLIST_PROPERTIES( playlist ), "_melt_first", 1 );
 140
 141         // We need to track the number of registered filters
 142         mlt_properties_set_int( field_properties, "registered", 0 );
 143
 144         // Parse the arguments
 145         if ( argv )
 146         for ( i = 0; argv[ i ] != NULL; i ++ )
 147         {
 148                 if ( argv[ i + 1 ] == NULL && (
 149                         !strcmp( argv[ i ], "-attach" ) ||
 150                         !strcmp( argv[ i ], "-attach-cut" ) ||
 151                         !strcmp( argv[ i ], "-attach-track" ) ||
 152                         !strcmp( argv[ i ], "-attach-clip" ) ||
 153                         !strcmp( argv[ i ], "-repeat" ) ||
 154                         !strcmp( argv[ i ], "-split" ) ||
 155                         !strcmp( argv[ i ], "-join" ) ||
 156                         !strcmp( argv[ i ], "-mixer" ) ||
 157                         !strcmp( argv[ i ], "-mix" ) ||
 158                         !strcmp( argv[ i ], "-filter" ) ||
 159                         !strcmp( argv[ i ], "-transition" ) ||
 160                         !strcmp( argv[ i ], "-blank" ) ) )
 161                 {
 162                         fprintf( stderr, "Argument missing for %s.\n", argv[ i ] );
 163                         break;
 164                 }
 165                 if ( !strcmp( argv[ i ], "-group" ) )
 166                 {
 167                         if ( mlt_properties_count( group ) != 0 )
 168                         {
 169                                 mlt_properties_close( group );
 170                                 group = mlt_properties_new( );
 171                         }
 172                         if ( group != NULL )
 173                                 properties = group;
 174                 }
 175                 else if ( !strcmp( argv[ i ], "-attach" ) ||
 176                                   !strcmp( argv[ i ], "-attach-cut" ) ||
 177                                   !strcmp( argv[ i ], "-attach-track" ) ||
 178                                   !strcmp( argv[ i ], "-attach-clip" ) )
 179                 {
 180                         int type = !strcmp( argv[ i ], "-attach" ) ? 0 :
 181                                            !strcmp( argv[ i ], "-attach-cut" ) ? 1 :
 182                                            !strcmp( argv[ i ], "-attach-track" ) ? 2 : 3;
 183                         mlt_filter filter = create_attach( profile, field, argv[ ++ i ], track );
 184                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 185                         {
 186                                 mlt_playlist_clip_info info;
 187                                 mlt_playlist_append( playlist, producer );
 188                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 189                                 producer = info.cut;
 190                         }
 191
 192                         if ( type == 1 || type == 2 )
 193                         {
 194                                 mlt_playlist_clip_info info;
 195                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 196                                 producer = info.cut;
 197                         }
 198
 199                         if ( filter != NULL && mlt_playlist_count( playlist ) > 0 )
 200                         {
 201                                 if ( type == 0 )
 202                                         mlt_service_attach( ( mlt_service )properties, filter );
 203                                 else if ( type == 1 )
 204                                         mlt_service_attach( ( mlt_service )producer, filter );
 205                                 else if ( type == 2 )
 206                                         mlt_service_attach( ( mlt_service )playlist, filter );
 207                                 else if ( type == 3 )
 208                                         mlt_service_attach( ( mlt_service )mlt_producer_cut_parent( producer ), filter );
 209
 210                                 properties = MLT_FILTER_PROPERTIES( filter );
 211                                 mlt_properties_inherit( properties, group );
 212                         }
 213                         else if ( filter != NULL )
 214                         {
 215                                 mlt_service_attach( ( mlt_service )playlist, filter );
 216                                 properties = MLT_FILTER_PROPERTIES( filter );
 217                                 mlt_properties_inherit( properties, group );
 218                         }
 219                 }
 220                 else if ( !strcmp( argv[ i ], "-repeat" ) )
 221                 {
 222                         int repeat = atoi( argv[ ++ i ] );
 223                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 224                                 mlt_playlist_append( playlist, producer );
 225                         producer = NULL;
 226                         if ( mlt_playlist_count( playlist ) > 0 )
 227                         {
 228                                 mlt_playlist_clip_info info;
 229                                 mlt_playlist_repeat_clip( playlist, mlt_playlist_count( playlist ) - 1, repeat );
 230                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 231                                 producer = info.cut;
 232                                 properties = MLT_PRODUCER_PROPERTIES( producer );
 233                         }
 234                 }
 235                 else if ( !strcmp( argv[ i ], "-split" ) )
 236                 {
 237                         int split = atoi( argv[ ++ i ] );
 238                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 239                                 mlt_playlist_append( playlist, producer );
 240                         producer = NULL;
 241                         if ( mlt_playlist_count( playlist ) > 0 )
 242                         {
 243                                 mlt_playlist_clip_info info;
 244                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 245                                 split = split < 0 ? info.frame_out + split : split;
 246                                 mlt_playlist_split( playlist, mlt_playlist_count( playlist ) - 1, split );
 247                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 248                                 producer = info.cut;
 249                                 properties = MLT_PRODUCER_PROPERTIES( producer );
 250                         }
 251                 }
 252                 else if ( !strcmp( argv[ i ], "-swap" ) )
 253                 {
 254                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 255                                 mlt_playlist_append( playlist, producer );
 256                         producer = NULL;
 257                         if ( mlt_playlist_count( playlist ) >= 2 )
 258                         {
 259                                 mlt_playlist_clip_info info;
 260                                 mlt_playlist_move( playlist, mlt_playlist_count( playlist ) - 2, mlt_playlist_count( playlist ) - 1 );
 261                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 262                                 producer = info.cut;
 263                                 properties = MLT_PRODUCER_PROPERTIES( producer );
 264                         }
 265                 }
 266                 else if ( !strcmp( argv[ i ], "-join" ) )
 267                 {
 268                         int clips = atoi( argv[ ++ i ] );
 269                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 270                                 mlt_playlist_append( playlist, producer );
 271                         producer = NULL;
 272                         if ( mlt_playlist_count( playlist ) > 0 )
 273                         {
 274                                 mlt_playlist_clip_info info;
 275                                 int clip = clips <= 0 ? 0 : mlt_playlist_count( playlist ) - clips - 1;
 276                                 if ( clip < 0 ) clip = 0;
 277                                 if ( clip >= mlt_playlist_count( playlist ) ) clip = mlt_playlist_count( playlist ) - 2;
 278                                 if ( clips < 0 ) clips =  mlt_playlist_count( playlist ) - 1;
 279                                 mlt_playlist_join( playlist, clip, clips, 0 );
 280                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 281                                 producer = info.cut;
 282                                 properties = MLT_PRODUCER_PROPERTIES( producer );
 283                         }
 284                 }
 285                 else if ( !strcmp( argv[ i ], "-remove" ) )
 286                 {
 287                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 288                                 mlt_playlist_append( playlist, producer );
 289                         producer = NULL;
 290                         if ( mlt_playlist_count( playlist ) > 0 )
 291                         {
 292                                 mlt_playlist_clip_info info;
 293                                 mlt_playlist_remove( playlist, mlt_playlist_count( playlist ) - 1 );
 294                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 295                                 producer = info.cut;
 296                                 properties = MLT_PRODUCER_PROPERTIES( producer );
 297                         }
 298                 }
 299                 else if ( !strcmp( argv[ i ], "-mix" ) )
 300                 {
 301                         int length = atoi( argv[ ++ i ] );
 302                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 303                                 mlt_playlist_append( playlist, producer );
 304                         producer = NULL;
 305                         if ( mlt_playlist_count( playlist ) >= 2 )
 306                         {
 307                                 if ( mlt_playlist_mix( playlist, mlt_playlist_count( playlist ) - 2, length, NULL ) == 0 )
 308                                 {
 309                                         mlt_playlist_clip_info info;
 310                                         mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 311                                         if ( mlt_properties_get_data( ( mlt_properties )info.producer, "mlt_mix", NULL ) == NULL )
 312                                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 2 );
 313                                         mix = ( mlt_tractor )mlt_properties_get_data( ( mlt_properties )info.producer, "mlt_mix", NULL );
 314                                         properties = NULL;
 315                                 }
 316                                 else
 317                                 {
 318                                         fprintf( stderr, "Mix failed?\n" );
 319                                 }
 320                         }
 321                         else
 322                         {
 323                                 fprintf( stderr, "Invalid position for a mix...\n" );
 324                         }
 325                 }
 326                 else if ( !strcmp( argv[ i ], "-mixer" ) )
 327                 {
 328                         if ( mix != NULL )
 329                         {
 330                                 char *id = strdup( argv[ ++ i ] );
 331                                 char *arg = strchr( id, ':' );
 332                                 mlt_field field = mlt_tractor_field( mix );
 333                                 mlt_transition transition = NULL;
 334                                 if ( arg != NULL )
 335                                         *arg ++ = '\0';
 336                                 transition = mlt_factory_transition( profile, id, arg );
 337                                 if ( transition != NULL )
 338                                 {
 339                                         properties = MLT_TRANSITION_PROPERTIES( transition );
 340                                         mlt_properties_inherit( properties, group );
 341                                         mlt_field_plant_transition( field, transition, 0, 1 );
 342                                         mlt_properties_set_position( properties, "in", 0 );
 343                                         mlt_properties_set_position( properties, "out", mlt_producer_get_out( ( mlt_producer )mix ) );
 344                                         mlt_transition_close( transition );
 345                                 }
 346                                 free( id );
 347                         }
 348                         else
 349                         {
 350                                 fprintf( stderr, "Invalid mixer...\n" );
 351                         }
 352                 }
 353                 else if ( !strcmp( argv[ i ], "-filter" ) )
 354                 {
 355                         mlt_filter filter = create_filter( profile, field, argv[ ++ i ], track );
 356                         if ( filter != NULL )
 357                         {
 358                                 properties = MLT_FILTER_PROPERTIES( filter );
 359                                 mlt_properties_inherit( properties, group );
 360                         }
 361                 }
 362                 else if ( !strcmp( argv[ i ], "-transition" ) )
 363                 {
 364                         mlt_transition transition = create_transition( profile, field, argv[ ++ i ], track - 1 );
 365                         if ( transition != NULL )
 366                         {
 367                                 properties = MLT_TRANSITION_PROPERTIES( transition );
 368                                 mlt_properties_inherit( properties, group );
 369                         }
 370                 }
 371                 else if ( !strcmp( argv[ i ], "-blank" ) )
 372                 {
 373                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 374                                 mlt_playlist_append( playlist, producer );
 375                         producer = NULL;
 376                         mlt_playlist_blank( playlist, atof( argv[ ++ i ] ) );
 377                 }
 378                 else if ( !strcmp( argv[ i ], "-track" ) ||
 379                                   !strcmp( argv[ i ], "-null-track" ) ||
 380                                   !strcmp( argv[ i ], "-video-track" ) ||
 381                                   !strcmp( argv[ i ], "-audio-track" ) ||
 382                                   !strcmp( argv[ i ], "-hide-track" ) ||
 383                                   !strcmp( argv[ i ], "-hide-video" ) ||
 384                                   !strcmp( argv[ i ], "-hide-audio" ) )
 385                 {
 386                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 387                                 mlt_playlist_append( playlist, producer );
 388                         producer = NULL;
 389                         if ( !mlt_properties_get_int( MLT_PLAYLIST_PROPERTIES( playlist ), "_melt_first" ) ||
 390                                   mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( playlist ) ) > 0 )
 391                         {
 392                                 mlt_multitrack_connect( multitrack, MLT_PLAYLIST_PRODUCER( playlist ), track ++ );
 393                                 track_service( field, playlist, ( mlt_destructor )mlt_playlist_close );
 394                                 playlist = mlt_playlist_init( );
 395                         }
 396                         if ( playlist != NULL )
 397                         {
 398                                 properties = MLT_PLAYLIST_PROPERTIES( playlist );
 399                                 if ( !strcmp( argv[ i ], "-null-track" ) || !strcmp( argv[ i ], "-hide-track" ) )
 400                                         mlt_properties_set_int( properties, "hide", 3 );
 401                                 else if ( !strcmp( argv[ i ], "-audio-track" ) || !strcmp( argv[ i ], "-hide-video" ) )
 402                                         mlt_properties_set_int( properties, "hide", 1 );
 403                                 else if ( !strcmp( argv[ i ], "-video-track" ) || !strcmp( argv[ i ], "-hide-audio" ) )
 404                                         mlt_properties_set_int( properties, "hide", 2 );
 405                         }
 406                 }
 407                 else if ( strchr( argv[ i ], '=' ) && strstr( argv[ i ], "<?xml" ) != argv[ i ] &&
 408                         // Prevent interpreting URL with parameters as a property.
 409                         // This does not support property names containing a colon.
 410                         ( !strchr( argv[ i ], ':' ) || strchr( argv[ i ], ':' ) > strchr( argv[ i ], '=' ) ) )
 411                 {
 412                         mlt_properties_parse( properties, argv[ i ] );
 413                 }
 414                 else if ( argv[ i ][ 0 ] != '-' )
 415                 {
 416                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 417                                 mlt_playlist_append( playlist, producer );
 418                         if ( title == NULL && strstr( argv[ i ], "<?xml" ) != argv[ i ] )
 419                                 title = argv[ i ];
 420                         producer = create_producer( profile, field, argv[ i ] );
 421                         if ( producer != NULL )
 422                         {
 423                                 properties = MLT_PRODUCER_PROPERTIES( producer );
 424                                 mlt_properties_inherit( properties, group );
 425                         }
 426                         else
 427                         {
 428                                 fprintf( stderr, "Failed to load \"%s\"\n", argv[ i ] );
 429                         }
 430                 }
 431                 else
 432                 {
 433                         int backtrack = 0;
 434                         if ( !strcmp( argv[ i ], "-serialise" ) ||
 435                              !strcmp( argv[ i ], "-consumer" ) ||
 436                              !strcmp( argv[ i ], "-profile" ) )
 437                         {
 438                                 i += 2;
 439                                 backtrack = 1;
 440                         }
 441
 442                         while ( argv[ i ] != NULL && strchr( argv[ i ], '=' ) )
 443                         {
 444                                 i ++;
 445                                 backtrack = 1;
 446                         }
 447                         if ( backtrack )
 448                                 i --;
 449                 }
 450         }
 451
 452         // Set the size of the producer_avformat cache to the number of tracks.
 453         if ( track > mlt_service_cache_get_size( MLT_PLAYLIST_SERVICE( playlist ), "producer_avformat" ) )
 454                 mlt_service_cache_set_size( MLT_PLAYLIST_SERVICE( playlist ), "producer_avformat", track + 2 );
 455
 456         // Connect last producer to playlist
 457         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 458                 mlt_playlist_append( playlist, producer );
 459
 460         // Track the last playlist too
 461         track_service( field, playlist, ( mlt_destructor )mlt_playlist_close );
 462
 463         // We must have a playlist to connect
 464         if ( !mlt_properties_get_int( MLT_PLAYLIST_PROPERTIES( playlist ), "_melt_first" ) ||
 465                   mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( playlist ) ) > 0 )
 466                 mlt_multitrack_connect( multitrack, MLT_PLAYLIST_PRODUCER( playlist ), track );
 467
 468         mlt_producer prod = MLT_TRACTOR_PRODUCER( tractor );
 469         mlt_producer_optimise( prod );
 470         mlt_properties props = MLT_TRACTOR_PROPERTIES( tractor );
 471         mlt_properties_set_data( props, "group", group, 0, ( mlt_destructor )mlt_properties_close, NULL );
 472         mlt_properties_set_position( props, "length", mlt_producer_get_out( MLT_MULTITRACK_PRODUCER( multitrack ) ) + 1 );
 473         mlt_producer_set_in_and_out( prod, 0, mlt_producer_get_out( MLT_MULTITRACK_PRODUCER( multitrack ) ) );
 474         if ( title != NULL )
 475                 mlt_properties_set( props, "title", strchr( title, '/' ) ? strrchr( title, '/' ) + 1 : title );
 476
 477         return prod;
 478 }