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         char *filedup;
  73         if ( profile->description && strncmp( file, "consumer:", 9 ) && !strcmp( profile->description, "consumer:" ) )
  74         {
  75                 filedup = calloc( 1, strlen( file ) + strlen( profile->description ) + 1 );
  76                 strcat( filedup, profile->description );
  77                 strcat( filedup, file );
  78         }
  79         else
  80         {
  81                 filedup = strdup( file );
  82         }
  83         mlt_producer result = mlt_factory_producer( profile, NULL, filedup );
  84         free( filedup );
  85
  86         if ( result != NULL )
  87                 track_service( field, result, ( mlt_destructor )mlt_producer_close );
  88
  89         return result;
  90 }
  91
  92 static mlt_filter create_attach( mlt_profile profile, mlt_field field, char *id, int track )
  93 {
  94         char *temp = strdup( id );
  95         char *arg = strchr( temp, ':' );
  96         if ( arg != NULL )
  97                 *arg ++ = '\0';
  98         mlt_filter filter = mlt_factory_filter( profile, temp, arg );
  99         if ( filter != NULL )
 100                 track_service( field, filter, ( mlt_destructor )mlt_filter_close );
 101         free( temp );
 102         return filter;
 103 }
 104
 105 static mlt_filter create_filter( mlt_profile profile, mlt_field field, char *id, int track )
 106 {
 107         char *temp = strdup( id );
 108         char *arg = strchr( temp, ':' );
 109         if ( arg != NULL )
 110                 *arg ++ = '\0';
 111         mlt_filter filter = mlt_factory_filter( profile, temp, arg );
 112         if ( filter != NULL )
 113         {
 114                 mlt_field_plant_filter( field, filter, track );
 115                 track_service( field, filter, ( mlt_destructor )mlt_filter_close );
 116         }
 117         free( temp );
 118         return filter;
 119 }
 120
 121 static mlt_transition create_transition( mlt_profile profile, mlt_field field, char *id, int track )
 122 {
 123         char *arg = strchr( id, ':' );
 124         if ( arg != NULL )
 125                 *arg ++ = '\0';
 126         mlt_transition transition = mlt_factory_transition( profile, id, arg );
 127         if ( transition != NULL )
 128         {
 129                 mlt_field_plant_transition( field, transition, track, track + 1 );
 130                 track_service( field, transition, ( mlt_destructor )mlt_transition_close );
 131         }
 132         return transition;
 133 }
 134
 135 mlt_producer producer_melt_init( mlt_profile profile, mlt_service_type type, const char *id, char **argv )
 136 {
 137         int i;
 138         int track = 0;
 139         mlt_producer producer = NULL;
 140         mlt_tractor mix = NULL;
 141         mlt_playlist playlist = mlt_playlist_init( );
 142         mlt_properties group = mlt_properties_new( );
 143         mlt_tractor tractor = mlt_tractor_new( );
 144         mlt_properties properties = MLT_TRACTOR_PROPERTIES( tractor );
 145         mlt_field field = mlt_tractor_field( tractor );
 146         mlt_properties field_properties = mlt_field_properties( field );
 147         mlt_multitrack multitrack = mlt_tractor_multitrack( tractor );
 148         char *title = NULL;
 149
 150         // Assistance for template construction (allows -track usage to specify the first track)
 151         mlt_properties_set_int( MLT_PLAYLIST_PROPERTIES( playlist ), "_melt_first", 1 );
 152
 153         // We need to track the number of registered filters
 154         mlt_properties_set_int( field_properties, "registered", 0 );
 155
 156         // Parse the arguments
 157         if ( argv )
 158         for ( i = 0; argv[ i ] != NULL; i ++ )
 159         {
 160                 if ( !strcmp( argv[ i ], "-group" ) )
 161                 {
 162                         if ( mlt_properties_count( group ) != 0 )
 163                         {
 164                                 mlt_properties_close( group );
 165                                 group = mlt_properties_new( );
 166                         }
 167                         if ( group != NULL )
 168                                 properties = group;
 169                 }
 170                 else if ( !strcmp( argv[ i ], "-attach" ) ||
 171                                   !strcmp( argv[ i ], "-attach-cut" ) ||
 172                                   !strcmp( argv[ i ], "-attach-track" ) ||
 173                                   !strcmp( argv[ i ], "-attach-clip" ) )
 174                 {
 175                         int type = !strcmp( argv[ i ], "-attach" ) ? 0 :
 176                                            !strcmp( argv[ i ], "-attach-cut" ) ? 1 :
 177                                            !strcmp( argv[ i ], "-attach-track" ) ? 2 : 3;
 178                         mlt_filter filter = create_attach( profile, field, argv[ ++ i ], track );
 179                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 180                         {
 181                                 mlt_playlist_clip_info info;
 182                                 mlt_playlist_append( playlist, producer );
 183                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 184                                 producer = info.cut;
 185                         }
 186
 187                         if ( type == 1 || type == 2 )
 188                         {
 189                                 mlt_playlist_clip_info info;
 190                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 191                                 producer = info.cut;
 192                         }
 193
 194                         if ( filter != NULL && mlt_playlist_count( playlist ) > 0 )
 195                         {
 196                                 if ( type == 0 )
 197                                         mlt_service_attach( ( mlt_service )properties, filter );
 198                                 else if ( type == 1 )
 199                                         mlt_service_attach( ( mlt_service )producer, filter );
 200                                 else if ( type == 2 )
 201                                         mlt_service_attach( ( mlt_service )playlist, filter );
 202                                 else if ( type == 3 )
 203                                         mlt_service_attach( ( mlt_service )mlt_producer_cut_parent( producer ), filter );
 204
 205                                 properties = MLT_FILTER_PROPERTIES( filter );
 206                                 mlt_properties_inherit( properties, group );
 207                         }
 208                         else if ( filter != NULL )
 209                         {
 210                                 mlt_service_attach( ( mlt_service )playlist, filter );
 211                                 properties = MLT_FILTER_PROPERTIES( filter );
 212                                 mlt_properties_inherit( properties, group );
 213                         }
 214                 }
 215                 else if ( !strcmp( argv[ i ], "-repeat" ) )
 216                 {
 217                         int repeat = atoi( argv[ ++ i ] );
 218                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 219                                 mlt_playlist_append( playlist, producer );
 220                         producer = NULL;
 221                         if ( mlt_playlist_count( playlist ) > 0 )
 222                         {
 223                                 mlt_playlist_clip_info info;
 224                                 mlt_playlist_repeat_clip( playlist, mlt_playlist_count( playlist ) - 1, repeat );
 225                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 226                                 producer = info.cut;
 227                                 properties = MLT_PRODUCER_PROPERTIES( producer );
 228                         }
 229                 }
 230                 else if ( !strcmp( argv[ i ], "-split" ) )
 231                 {
 232                         int split = atoi( argv[ ++ i ] );
 233                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 234                                 mlt_playlist_append( playlist, producer );
 235                         producer = NULL;
 236                         if ( mlt_playlist_count( playlist ) > 0 )
 237                         {
 238                                 mlt_playlist_clip_info info;
 239                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 240                                 split = split < 0 ? info.frame_out + split : split;
 241                                 mlt_playlist_split( playlist, mlt_playlist_count( playlist ) - 1, split );
 242                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 243                                 producer = info.cut;
 244                                 properties = MLT_PRODUCER_PROPERTIES( producer );
 245                         }
 246                 }
 247                 else if ( !strcmp( argv[ i ], "-swap" ) )
 248                 {
 249                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 250                                 mlt_playlist_append( playlist, producer );
 251                         producer = NULL;
 252                         if ( mlt_playlist_count( playlist ) >= 2 )
 253                         {
 254                                 mlt_playlist_clip_info info;
 255                                 mlt_playlist_move( playlist, mlt_playlist_count( playlist ) - 2, mlt_playlist_count( playlist ) - 1 );
 256                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 257                                 producer = info.cut;
 258                                 properties = MLT_PRODUCER_PROPERTIES( producer );
 259                         }
 260                 }
 261                 else if ( !strcmp( argv[ i ], "-join" ) )
 262                 {
 263                         int clips = atoi( argv[ ++ i ] );
 264                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 265                                 mlt_playlist_append( playlist, producer );
 266                         producer = NULL;
 267                         if ( mlt_playlist_count( playlist ) > 0 )
 268                         {
 269                                 mlt_playlist_clip_info info;
 270                                 int clip = clips <= 0 ? 0 : mlt_playlist_count( playlist ) - clips - 1;
 271                                 if ( clip < 0 ) clip = 0;
 272                                 if ( clip >= mlt_playlist_count( playlist ) ) clip = mlt_playlist_count( playlist ) - 2;
 273                                 if ( clips < 0 ) clips =  mlt_playlist_count( playlist ) - 1;
 274                                 mlt_playlist_join( playlist, clip, clips, 0 );
 275                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 276                                 producer = info.cut;
 277                                 properties = MLT_PRODUCER_PROPERTIES( producer );
 278                         }
 279                 }
 280                 else if ( !strcmp( argv[ i ], "-remove" ) )
 281                 {
 282                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 283                                 mlt_playlist_append( playlist, producer );
 284                         producer = NULL;
 285                         if ( mlt_playlist_count( playlist ) > 0 )
 286                         {
 287                                 mlt_playlist_clip_info info;
 288                                 mlt_playlist_remove( playlist, mlt_playlist_count( playlist ) - 1 );
 289                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 290                                 producer = info.cut;
 291                                 properties = MLT_PRODUCER_PROPERTIES( producer );
 292                         }
 293                 }
 294                 else if ( !strcmp( argv[ i ], "-mix" ) )
 295                 {
 296                         int length = atoi( argv[ ++ i ] );
 297                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 298                                 mlt_playlist_append( playlist, producer );
 299                         producer = NULL;
 300                         if ( mlt_playlist_count( playlist ) >= 2 )
 301                         {
 302                                 if ( mlt_playlist_mix( playlist, mlt_playlist_count( playlist ) - 2, length, NULL ) == 0 )
 303                                 {
 304                                         mlt_playlist_clip_info info;
 305                                         mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 1 );
 306                                         if ( mlt_properties_get_data( ( mlt_properties )info.producer, "mlt_mix", NULL ) == NULL )
 307                                                 mlt_playlist_get_clip_info( playlist, &info, mlt_playlist_count( playlist ) - 2 );
 308                                         mix = ( mlt_tractor )mlt_properties_get_data( ( mlt_properties )info.producer, "mlt_mix", NULL );
 309                                         properties = NULL;
 310                                 }
 311                                 else
 312                                 {
 313                                         fprintf( stderr, "Mix failed?\n" );
 314                                 }
 315                         }
 316                         else
 317                         {
 318                                 fprintf( stderr, "Invalid position for a mix...\n" );
 319                         }
 320                 }
 321                 else if ( !strcmp( argv[ i ], "-mixer" ) )
 322                 {
 323                         if ( mix != NULL )
 324                         {
 325                                 char *id = strdup( argv[ ++ i ] );
 326                                 char *arg = strchr( id, ':' );
 327                                 mlt_field field = mlt_tractor_field( mix );
 328                                 mlt_transition transition = NULL;
 329                                 if ( arg != NULL )
 330                                         *arg ++ = '\0';
 331                                 transition = mlt_factory_transition( profile, id, arg );
 332                                 if ( transition != NULL )
 333                                 {
 334                                         properties = MLT_TRANSITION_PROPERTIES( transition );
 335                                         mlt_properties_inherit( properties, group );
 336                                         mlt_field_plant_transition( field, transition, 0, 1 );
 337                                         mlt_properties_set_position( properties, "in", 0 );
 338                                         mlt_properties_set_position( properties, "out", mlt_producer_get_out( ( mlt_producer )mix ) );
 339                                         mlt_transition_close( transition );
 340                                 }
 341                                 free( id );
 342                         }
 343                         else
 344                         {
 345                                 fprintf( stderr, "Invalid mixer...\n" );
 346                         }
 347                 }
 348                 else if ( !strcmp( argv[ i ], "-filter" ) )
 349                 {
 350                         mlt_filter filter = create_filter( profile, field, argv[ ++ i ], track );
 351                         if ( filter != NULL )
 352                         {
 353                                 properties = MLT_FILTER_PROPERTIES( filter );
 354                                 mlt_properties_inherit( properties, group );
 355                         }
 356                 }
 357                 else if ( !strcmp( argv[ i ], "-transition" ) )
 358                 {
 359                         mlt_transition transition = create_transition( profile, field, argv[ ++ i ], track - 1 );
 360                         if ( transition != NULL )
 361                         {
 362                                 properties = MLT_TRANSITION_PROPERTIES( transition );
 363                                 mlt_properties_inherit( properties, group );
 364                         }
 365                 }
 366                 else if ( !strcmp( argv[ i ], "-blank" ) )
 367                 {
 368                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 369                                 mlt_playlist_append( playlist, producer );
 370                         producer = NULL;
 371                         mlt_playlist_blank( playlist, atof( argv[ ++ i ] ) );
 372                 }
 373                 else if ( !strcmp( argv[ i ], "-track" ) ||
 374                                   !strcmp( argv[ i ], "-null-track" ) ||
 375                                   !strcmp( argv[ i ], "-video-track" ) ||
 376                                   !strcmp( argv[ i ], "-audio-track" ) ||
 377                                   !strcmp( argv[ i ], "-hide-track" ) ||
 378                                   !strcmp( argv[ i ], "-hide-video" ) ||
 379                                   !strcmp( argv[ i ], "-hide-audio" ) )
 380                 {
 381                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 382                                 mlt_playlist_append( playlist, producer );
 383                         producer = NULL;
 384                         if ( !mlt_properties_get_int( MLT_PLAYLIST_PROPERTIES( playlist ), "_melt_first" ) ||
 385                                   mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( playlist ) ) > 0 )
 386                         {
 387                                 mlt_multitrack_connect( multitrack, MLT_PLAYLIST_PRODUCER( playlist ), track ++ );
 388                                 track_service( field, playlist, ( mlt_destructor )mlt_playlist_close );
 389                                 playlist = mlt_playlist_init( );
 390                         }
 391                         if ( playlist != NULL )
 392                         {
 393                                 properties = MLT_PLAYLIST_PROPERTIES( playlist );
 394                                 if ( !strcmp( argv[ i ], "-null-track" ) || !strcmp( argv[ i ], "-hide-track" ) )
 395                                         mlt_properties_set_int( properties, "hide", 3 );
 396                                 else if ( !strcmp( argv[ i ], "-audio-track" ) || !strcmp( argv[ i ], "-hide-video" ) )
 397                                         mlt_properties_set_int( properties, "hide", 1 );
 398                                 else if ( !strcmp( argv[ i ], "-video-track" ) || !strcmp( argv[ i ], "-hide-audio" ) )
 399                                         mlt_properties_set_int( properties, "hide", 2 );
 400                         }
 401                 }
 402                 else if ( strchr( argv[ i ], '=' ) && strstr( argv[ i ], "<?xml" ) != argv[ i ] )
 403                 {
 404                         mlt_properties_parse( properties, argv[ i ] );
 405                 }
 406                 else if ( argv[ i ][ 0 ] != '-' )
 407                 {
 408                         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 409                                 mlt_playlist_append( playlist, producer );
 410                         if ( title == NULL && strstr( argv[ i ], "<?xml" ) != argv[ i ] )
 411                                 title = argv[ i ];
 412                         producer = create_producer( profile, field, argv[ i ] );
 413                         if ( producer != NULL )
 414                         {
 415                                 properties = MLT_PRODUCER_PROPERTIES( producer );
 416                                 mlt_properties_inherit( properties, group );
 417                         }
 418                         else
 419                         {
 420                                 fprintf( stderr, "Failed to load \"%s\"\n", argv[ i ] );
 421                         }
 422                 }
 423                 else
 424                 {
 425                         int backtrack = 0;
 426                         if ( !strcmp( argv[ i ], "-serialise" ) ||
 427                              !strcmp( argv[ i ], "-consumer" ) ||
 428                              !strcmp( argv[ i ], "-profile" ) )
 429                         {
 430                                 i += 2;
 431                                 backtrack = 1;
 432                         }
 433
 434                         while ( argv[ i ] != NULL && strchr( argv[ i ], '=' ) )
 435                         {
 436                                 i ++;
 437                                 backtrack = 1;
 438                         }
 439                         if ( backtrack )
 440                                 i --;
 441                 }
 442         }
 443
 444         // Connect last producer to playlist
 445         if ( producer != NULL && !mlt_producer_is_cut( producer ) )
 446                 mlt_playlist_append( playlist, producer );
 447
 448         // Track the last playlist too
 449         track_service( field, playlist, ( mlt_destructor )mlt_playlist_close );
 450
 451         // We must have a playlist to connect
 452         if ( !mlt_properties_get_int( MLT_PLAYLIST_PROPERTIES( playlist ), "_melt_first" ) ||
 453                   mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( playlist ) ) > 0 )
 454                 mlt_multitrack_connect( multitrack, MLT_PLAYLIST_PRODUCER( playlist ), track );
 455
 456         mlt_producer prod = MLT_TRACTOR_PRODUCER( tractor );
 457         mlt_producer_optimise( prod );
 458         mlt_properties props = MLT_TRACTOR_PROPERTIES( tractor );
 459         mlt_properties_set_data( props, "group", group, 0, ( mlt_destructor )mlt_properties_close, NULL );
 460         mlt_properties_set_position( props, "length", mlt_producer_get_out( MLT_MULTITRACK_PRODUCER( multitrack ) ) + 1 );
 461         mlt_producer_set_in_and_out( prod, 0, mlt_producer_get_out( MLT_MULTITRACK_PRODUCER( multitrack ) ) );
 462         if ( title != NULL )
 463                 mlt_properties_set( props, "title", strchr( title, '/' ) ? strrchr( title, '/' ) + 1 : title );
 464
 465         return prod;
 466 }