git.sesse.net Git - mlt/blob - src/modules/sdl/consumer_sdl.c

   1 /*
   2  * consumer_sdl.c -- A Simple DirectMedia Layer consumer
   3  * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
   4  * Author: Dan Dennedy <dan@dennedy.org>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program 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
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include "consumer_sdl.h"
  22 #include <framework/mlt_frame.h>
  23 #include <framework/mlt_deque.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <pthread.h>
  28 #include <SDL/SDL.h>
  29 #include <SDL/SDL_syswm.h>
  30 #include <sys/time.h>
  31
  32 /** This classes definition.
  33 */
  34
  35 typedef struct consumer_sdl_s *consumer_sdl;
  36
  37 struct consumer_sdl_s
  38 {
  39         struct mlt_consumer_s parent;
  40         mlt_properties properties;
  41         mlt_deque queue;
  42         pthread_t thread;
  43         int running;
  44         uint8_t audio_buffer[ 4096 * 19 ];
  45         int audio_avail;
  46         pthread_mutex_t audio_mutex;
  47         pthread_cond_t audio_cond;
  48         int window_width;
  49         int window_height;
  50         float aspect_ratio;
  51         float display_aspect;
  52         int width;
  53         int height;
  54         int playing;
  55         int sdl_flags;
  56         SDL_Surface *sdl_screen;
  57         SDL_Overlay *sdl_overlay;
  58         uint8_t *buffer;
  59 };
  60
  61 /** Forward references to static functions.
  62 */
  63
  64 static int consumer_start( mlt_consumer parent );
  65 static int consumer_stop( mlt_consumer parent );
  66 static int consumer_is_stopped( mlt_consumer parent );
  67 static void consumer_close( mlt_consumer parent );
  68 static void *consumer_thread( void * );
  69 static int consumer_get_dimensions( int *width, int *height );
  70
  71 /** This is what will be called by the factory - anything can be passed in
  72         via the argument, but keep it simple.
  73 */
  74
  75 mlt_consumer consumer_sdl_init( char *arg )
  76 {
  77         // Create the consumer object
  78         consumer_sdl this = calloc( sizeof( struct consumer_sdl_s ), 1 );
  79
  80         // If no malloc'd and consumer init ok
  81         if ( this != NULL && mlt_consumer_init( &this->parent, this ) == 0 )
  82         {
  83                 // Create the queue
  84                 this->queue = mlt_deque_init( );
  85
  86                 // Get the parent consumer object
  87                 mlt_consumer parent = &this->parent;
  88
  89                 // We have stuff to clean up, so override the close method
  90                 parent->close = consumer_close;
  91
  92                 // get a handle on properties
  93                 mlt_service service = mlt_consumer_service( parent );
  94                 this->properties = mlt_service_properties( service );
  95
  96                 // Set the default volume
  97                 mlt_properties_set_double( this->properties, "volume", 1.0 );
  98
  99                 // This is the initialisation of the consumer
 100                 pthread_mutex_init( &this->audio_mutex, NULL );
 101                 pthread_cond_init( &this->audio_cond, NULL);
 102
 103                 // Default scaler (for now we'll use nearest)
 104                 mlt_properties_set( this->properties, "rescale", "nearest" );
 105
 106                 // Default buffer for low latency
 107                 mlt_properties_set_int( this->properties, "buffer", 1 );
 108
 109                 // Default progressive true
 110                 mlt_properties_set_int( this->properties, "progressive", 0 );
 111
 112                 // Get sample aspect ratio
 113                 this->aspect_ratio = mlt_properties_get_double( this->properties, "aspect_ratio" );
 114
 115                 // Default display aspect ratio
 116                 this->display_aspect = 4.0 / 3.0;
 117
 118                 // process actual param
 119                 if ( arg == NULL || sscanf( arg, "%dx%d", &this->width, &this->height ) != 2 )
 120                 {
 121                         this->width = mlt_properties_get_int( this->properties, "width" );
 122                         this->height = mlt_properties_get_int( this->properties, "height" );
 123
 124                         // Default window size
 125                         this->window_width = ( float )this->height * this->display_aspect + 0.5;
 126                         this->window_height = this->height;
 127                 }
 128                 else
 129                 {
 130                         if ( (int)( ( float )this->width / this->height * 1000 ) !=
 131                                  (int)( this->display_aspect * 1000 ) )
 132                         {
 133                                 // Override these
 134                                 this->display_aspect = ( float )this->width / this->height;
 135                                 this->aspect_ratio = 1.0;
 136                                 mlt_properties_set_double( this->properties, "aspect_ratio", this->aspect_ratio );
 137                         }
 138
 139                         // Set window size
 140                         this->window_width = this->width;
 141                         this->window_height = this->height;
 142                 }
 143
 144                 // Set the sdl flags
 145                 this->sdl_flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL | SDL_RESIZABLE;
 146
 147                 // Allow thread to be started/stopped
 148                 parent->start = consumer_start;
 149                 parent->stop = consumer_stop;
 150                 parent->is_stopped = consumer_is_stopped;
 151
 152                 // Return the consumer produced
 153                 return parent;
 154         }
 155
 156         // malloc or consumer init failed
 157         free( this );
 158
 159         // Indicate failure
 160         return NULL;
 161 }
 162
 163 int consumer_start( mlt_consumer parent )
 164 {
 165         consumer_sdl this = parent->child;
 166
 167         if ( !this->running )
 168         {
 169                 pthread_attr_t thread_attributes;
 170
 171                 this->running = 1;
 172
 173                 // Allow the user to force resizing to window size
 174                 if ( mlt_properties_get_int( this->properties, "resize" ) )
 175                 {
 176                         mlt_properties_set_int( this->properties, "width", this->width );
 177                         mlt_properties_set_int( this->properties, "height", this->height );
 178                 }
 179
 180                 // Inherit the scheduling priority
 181                 pthread_attr_init( &thread_attributes );
 182                 pthread_attr_setinheritsched( &thread_attributes, PTHREAD_INHERIT_SCHED );
 183
 184                 pthread_create( &this->thread, &thread_attributes, consumer_thread, this );
 185         }
 186
 187         return 0;
 188 }
 189
 190 int consumer_stop( mlt_consumer parent )
 191 {
 192         // Get the actual object
 193         consumer_sdl this = parent->child;
 194
 195         if ( this->running )
 196         {
 197                 // Kill the thread and clean up
 198                 this->running = 0;
 199
 200                 pthread_mutex_lock( &this->audio_mutex );
 201                 pthread_cond_broadcast( &this->audio_cond );
 202                 pthread_mutex_unlock( &this->audio_mutex );
 203
 204                 pthread_join( this->thread, NULL );
 205         }
 206
 207         return 0;
 208 }
 209
 210 int consumer_is_stopped( mlt_consumer parent )
 211 {
 212         consumer_sdl this = parent->child;
 213         return !this->running;
 214 }
 215
 216 static int sdl_lock_display( )
 217 {
 218         SDL_Surface *screen = SDL_GetVideoSurface( );
 219         return screen != NULL && ( !SDL_MUSTLOCK( screen ) || SDL_LockSurface( screen ) >= 0 );
 220 }
 221
 222 static void sdl_unlock_display( )
 223 {
 224         SDL_Surface *screen = SDL_GetVideoSurface( );
 225         if ( screen != NULL && SDL_MUSTLOCK( screen ) )
 226                 SDL_UnlockSurface( screen );
 227 }
 228
 229 static void sdl_fill_audio( void *udata, uint8_t *stream, int len )
 230 {
 231         consumer_sdl this = udata;
 232
 233         // Get the volume
 234         float volume = mlt_properties_get_double( this->properties, "volume" );
 235
 236         pthread_mutex_lock( &this->audio_mutex );
 237
 238         // Block until audio received
 239         while ( this->running && len > this->audio_avail )
 240                 pthread_cond_wait( &this->audio_cond, &this->audio_mutex );
 241
 242         if ( this->audio_avail >= len )
 243         {
 244                 // Place in the audio buffer
 245                 SDL_MixAudio( stream, this->audio_buffer, len, ( int )( ( float )SDL_MIX_MAXVOLUME * volume ) );
 246
 247                 // Remove len from the audio available
 248                 this->audio_avail -= len;
 249
 250                 // Remove the samples
 251                 memmove( this->audio_buffer, this->audio_buffer + len, this->audio_avail );
 252         }
 253         else
 254         {
 255                 // Just to be safe, wipe the stream first
 256                 memset( stream, 0, len );
 257
 258                 // Copy what we have into the stream
 259                 memcpy( stream, this->audio_buffer, this->audio_avail );
 260
 261                 // Mix the audio
 262                 SDL_MixAudio( stream, stream, len, ( int )( ( float )SDL_MIX_MAXVOLUME * volume ) );
 263
 264                 // No audio left
 265                 this->audio_avail = 0;
 266         }
 267
 268         // We're definitely playing now
 269         this->playing = 1;
 270
 271         pthread_cond_broadcast( &this->audio_cond );
 272         pthread_mutex_unlock( &this->audio_mutex );
 273 }
 274
 275 static int consumer_play_audio( consumer_sdl this, mlt_frame frame, int init_audio, int *duration )
 276 {
 277         // Get the properties of this consumer
 278         mlt_properties properties = this->properties;
 279         mlt_audio_format afmt = mlt_audio_pcm;
 280
 281         // Set the preferred params of the test card signal
 282         int channels = mlt_properties_get_int( properties, "channels" );
 283         int frequency = mlt_properties_get_int( properties, "frequency" );
 284         static int counter = 0;
 285
 286         int samples = mlt_sample_calculator( mlt_properties_get_double( this->properties, "fps" ), frequency, counter++ );
 287
 288         int16_t *pcm;
 289         int bytes;
 290
 291         mlt_frame_get_audio( frame, &pcm, &afmt, &frequency, &channels, &samples );
 292         *duration = ( ( samples * 1000 ) / frequency );
 293
 294         if ( mlt_properties_get_int( properties, "audio_off" ) )
 295         {
 296                 this->playing = 1;
 297                 init_audio = 1;
 298                 return init_audio;
 299         }
 300
 301         if ( init_audio == 1 )
 302         {
 303                 SDL_AudioSpec request;
 304                 SDL_AudioSpec got;
 305
 306                 // specify audio format
 307                 memset( &request, 0, sizeof( SDL_AudioSpec ) );
 308                 this->playing = 0;
 309                 request.freq = frequency;
 310                 request.format = AUDIO_S16;
 311                 request.channels = channels;
 312                 request.samples = 1024;
 313                 request.callback = sdl_fill_audio;
 314                 request.userdata = (void *)this;
 315                 if ( SDL_OpenAudio( &request, &got ) != 0 )
 316                 {
 317                         fprintf( stderr, "SDL failed to open audio: %s\n", SDL_GetError() );
 318                         init_audio = 2;
 319                 }
 320                 else if ( got.size != 0 )
 321                 {
 322                         SDL_PauseAudio( 0 );
 323                         init_audio = 0;
 324                 }
 325         }
 326
 327         if ( init_audio == 0 )
 328         {
 329                 mlt_properties properties = mlt_frame_properties( frame );
 330                 bytes = ( samples * channels * 2 );
 331                 pthread_mutex_lock( &this->audio_mutex );
 332                 while ( bytes > ( sizeof( this->audio_buffer) - this->audio_avail ) )
 333                         pthread_cond_wait( &this->audio_cond, &this->audio_mutex );
 334                 if ( mlt_properties_get_double( properties, "_speed" ) == 1 )
 335                         memcpy( &this->audio_buffer[ this->audio_avail ], pcm, bytes );
 336                 else
 337                         memset( &this->audio_buffer[ this->audio_avail ], 0, bytes );
 338                 this->audio_avail += bytes;
 339                 pthread_cond_broadcast( &this->audio_cond );
 340                 pthread_mutex_unlock( &this->audio_mutex );
 341         }
 342         else
 343         {
 344                 this->playing = 1;
 345         }
 346
 347         return init_audio;
 348 }
 349
 350 static int consumer_play_video( consumer_sdl this, mlt_frame frame )
 351 {
 352         // Get the properties of this consumer
 353         mlt_properties properties = this->properties;
 354
 355         mlt_image_format vfmt = mlt_image_yuv422;
 356         int width = this->width, height = this->height;
 357         uint8_t *image;
 358         int changed = 0;
 359
 360         if ( mlt_properties_get_int( properties, "video_off" ) == 0 )
 361         {
 362                 // Get the image, width and height
 363                 mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
 364
 365                 // Handle events
 366                 if ( this->sdl_screen != NULL )
 367                 {
 368                         SDL_Event event;
 369
 370                         changed = consumer_get_dimensions( &this->window_width, &this->window_height );
 371
 372                         while ( SDL_PollEvent( &event ) )
 373                         {
 374                                 switch( event.type )
 375                                 {
 376                                         case SDL_VIDEORESIZE:
 377                                                 this->window_width = event.resize.w;
 378                                                 this->window_height = event.resize.h;
 379                                                 changed = 1;
 380                                                 break;
 381                                         case SDL_QUIT:
 382                                                 this->running = 0;
 383                                                 break;
 384                                         case SDL_KEYDOWN:
 385                                                 {
 386                                                         mlt_producer producer = mlt_properties_get_data( properties, "transport_producer", NULL );
 387                                                         char keyboard[ 2 ] = " ";
 388                                                         void (*callback)( mlt_producer, char * ) = mlt_properties_get_data( properties, "transport_callback", NULL );
 389                                                         if ( callback != NULL && producer != NULL && event.key.keysym.unicode < 0x80 && event.key.keysym.unicode > 0 )
 390                                                         {
 391                                                                 keyboard[ 0 ] = ( char )event.key.keysym.unicode;
 392                                                                 callback( producer, keyboard );
 393                                                         }
 394                                                 }
 395                                                 break;
 396                                 }
 397                         }
 398                 }
 399
 400                 if ( width != this->width || height != this->height )
 401                 {
 402                         this->width = width;
 403                         this->height = height;
 404                         changed = 1;
 405                 }
 406
 407                 if ( this->sdl_screen == NULL || changed )
 408                 {
 409                         SDL_Rect rect;
 410
 411                         // Determine frame's display aspect ratio
 412                         float frame_aspect = mlt_frame_get_aspect_ratio( frame ) * this->width / this->height;
 413
 414                         // Determine window's new display aspect ratio
 415                         float this_aspect = ( float )this->window_width / this->window_height;
 416
 417                         // If using hardware scaler
 418                         if ( mlt_properties_get( properties, "rescale" ) != NULL &&
 419                                 !strcmp( mlt_properties_get( properties, "rescale" ), "none" ) )
 420                         {
 421                                 // Special case optimisation to negate odd effect of sample aspect ratio
 422                                 // not corresponding exactly with image resolution.
 423                                 if ( ( (int)( this_aspect * 1000 ) == (int)( this->display_aspect * 1000 ) ) &&
 424                                          ( (int)( mlt_frame_get_aspect_ratio( frame ) * 1000 ) == (int)( this->aspect_ratio * 1000 ) ) )
 425                                 {
 426                                         rect.w = this->window_width;
 427                                         rect.h = this->window_height;
 428                                 }
 429                                 else
 430                                 {
 431                                         // Use hardware scaler to normalise display aspect ratio
 432                                         rect.w = frame_aspect / this_aspect * this->window_width + 0.5;
 433                                         rect.h = this->window_height;
 434                                         if ( rect.w > this->window_width )
 435                                         {
 436                                                 rect.w = this->window_width;
 437                                                 rect.h = this_aspect / frame_aspect * this->window_height + 0.5;
 438                                         }
 439                                 }
 440                         }
 441                         // Special case optimisation to negate odd effect of sample aspect ratio
 442                         // not corresponding exactly with image resolution.
 443                         else if ( (int)( this_aspect * 1000 ) == (int)( this->display_aspect * 1000 ) )
 444                         {
 445                                 rect.w = this->window_width;
 446                                 rect.h = this->window_height;
 447                         }
 448                         // Use hardware scaler to normalise sample aspect ratio
 449                         else if ( this->window_height * frame_aspect > this->window_width )
 450                         {
 451                                 rect.w = this->window_width;
 452                                 rect.h = this->window_width / frame_aspect + 0.5;
 453                         }
 454                         else
 455                         {
 456                                 rect.w = this->window_height * frame_aspect + 0.5;
 457                                 rect.h = this->window_height;
 458                         }
 459
 460                         rect.x = ( this->window_width - rect.w ) / 2;
 461                         rect.y = ( this->window_height - rect.h ) / 2;
 462
 463                         // Force an overlay recreation
 464                         if ( this->sdl_overlay != NULL )
 465                                 SDL_FreeYUVOverlay( this->sdl_overlay );
 466
 467                         // open SDL window with video overlay, if possible
 468                         this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
 469
 470                         if ( this->sdl_screen != NULL )
 471                         {
 472                                 SDL_SetClipRect( this->sdl_screen, &rect );
 473                                 sdl_lock_display();
 474                                 this->sdl_overlay = SDL_CreateYUVOverlay( this->width, this->height, SDL_YUY2_OVERLAY, this->sdl_screen );
 475                                 sdl_unlock_display();
 476                         }
 477                 }
 478
 479                 if ( this->sdl_screen != NULL && this->sdl_overlay != NULL )
 480                 {
 481                         this->buffer = this->sdl_overlay->pixels[ 0 ];
 482                         if ( SDL_LockYUVOverlay( this->sdl_overlay ) >= 0 )
 483                         {
 484                                 if ( image != NULL )
 485                                         memcpy( this->buffer, image, width * height * 2 );
 486                                 SDL_UnlockYUVOverlay( this->sdl_overlay );
 487                                 SDL_DisplayYUVOverlay( this->sdl_overlay, &this->sdl_screen->clip_rect );
 488                         }
 489                 }
 490         }
 491
 492         // Close the frame
 493         mlt_frame_close( frame );
 494
 495         return 0;
 496 }
 497
 498 /** Threaded wrapper for pipe.
 499 */
 500
 501 static void *consumer_thread( void *arg )
 502 {
 503         // Identify the arg
 504         consumer_sdl this = arg;
 505
 506         // Get the consumer
 507         mlt_consumer consumer = &this->parent;
 508
 509         // internal intialization
 510         int init_audio = 1;
 511
 512         // Obtain time of thread start
 513         struct timeval now;
 514         int64_t start = 0;
 515         int64_t elapsed = 0;
 516         int duration = 0;
 517         int64_t playtime = 0;
 518         struct timespec tm;
 519         mlt_frame next = NULL;
 520         mlt_frame frame = NULL;
 521
 522         if ( SDL_Init( SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_NOPARACHUTE ) < 0 )
 523         {
 524                 fprintf( stderr, "Failed to initialize SDL: %s\n", SDL_GetError() );
 525                 return NULL;
 526         }
 527
 528         SDL_EnableKeyRepeat( SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL );
 529         SDL_EnableUNICODE( 1 );
 530
 531         // Loop until told not to
 532         while( this->running )
 533         {
 534                 // Get a frame from the attached producer
 535                 frame = mlt_consumer_rt_frame( consumer );
 536
 537                 // Ensure that we have a frame
 538                 if ( frame != NULL )
 539                 {
 540                         // Play audio
 541                         init_audio = consumer_play_audio( this, frame, init_audio, &duration );
 542
 543                         if ( this->playing )
 544                         {
 545                                 // Get the current time
 546                                 gettimeofday( &now, NULL );
 547
 548                                 // Determine elapsed time
 549                                 if ( start == 0 )
 550                                         start = ( int64_t )now.tv_sec * 1000000 + now.tv_usec;
 551                                 else
 552                                         elapsed = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec) - start;
 553                         }
 554
 555                         // Set playtime for this frame
 556                         mlt_properties_set_position( mlt_frame_properties( frame ), "playtime", playtime );
 557
 558                         // Push this frame to the back of the queue
 559                         mlt_deque_push_back( this->queue, frame );
 560
 561                         // Calculate the next playtime
 562                         playtime += ( duration * 1000 );
 563                 }
 564
 565                 if ( this->playing )
 566                 {
 567                         // Pop the next frame
 568                         next = mlt_deque_pop_front( this->queue );
 569
 570                         // See if we have to delay the display of the current frame
 571                         if ( next != NULL && mlt_properties_get_int( mlt_frame_properties( next ), "rendered" ) == 1 )
 572                         {
 573                                 mlt_position scheduled = mlt_properties_get_position( mlt_frame_properties( next ), "playtime" ) + 5000;
 574                                 if ( scheduled > elapsed && mlt_deque_count( this->queue ) > 25 )
 575                                 {
 576                                         tm.tv_sec = ( scheduled - elapsed ) / 1000000;
 577                                         tm.tv_nsec = ( ( scheduled - elapsed ) % 1000000 ) * 1000;
 578                                         nanosleep( &tm, NULL );
 579
 580                                         // Show current frame
 581                                         consumer_play_video( this, next );
 582                                 }
 583                                 else if ( scheduled > elapsed )
 584                                 {
 585                                         // More time to kill
 586                                         mlt_deque_push_front( this->queue, next );
 587                                 }
 588                                 else
 589                                 {
 590                                         // Show current frame
 591                                         consumer_play_video( this, next );
 592                                 }
 593                         }
 594                         else
 595                         {
 596                                 // This is an unrendered frame - just close it
 597                                 mlt_frame_close( next );
 598                         }
 599                 }
 600         }
 601
 602         // internal cleanup
 603         if ( init_audio == 0 )
 604                 SDL_AudioQuit( );
 605         if ( this->sdl_overlay != NULL )
 606                 SDL_FreeYUVOverlay( this->sdl_overlay );
 607         SDL_Quit( );
 608
 609         while( mlt_deque_count( this->queue ) )
 610                 mlt_frame_close( mlt_deque_pop_back( this->queue ) );
 611
 612         this->sdl_screen = NULL;
 613         this->sdl_overlay = NULL;
 614         this->audio_avail = 0;
 615
 616         return NULL;
 617 }
 618
 619 static int consumer_get_dimensions( int *width, int *height )
 620 {
 621         int changed = 0;
 622
 623         // SDL windows manager structure
 624         SDL_SysWMinfo wm;
 625
 626         // Specify the SDL Version
 627         SDL_VERSION( &wm.version );
 628
 629         // Get the wm structure
 630         if ( SDL_GetWMInfo( &wm ) == 1 )
 631         {
 632                 // Check that we have the X11 wm
 633                 if ( wm.subsystem == SDL_SYSWM_X11 )
 634                 {
 635                         // Get the SDL window
 636                         Window window = wm.info.x11.window;
 637
 638                         // Get the display session
 639                         Display *display = wm.info.x11.display;
 640
 641                         // Get the window attributes
 642                         XWindowAttributes attr;
 643                         XGetWindowAttributes( display, window, &attr );
 644
 645                         // Determine whether window has changed
 646                         changed = *width != attr.width || *height != attr.height;
 647
 648                         // Return width and height
 649                         *width = attr.width;
 650                         *height = attr.height;
 651                 }
 652         }
 653
 654         return changed;
 655 }
 656
 657 /** Callback to allow override of the close method.
 658 */
 659
 660 static void consumer_close( mlt_consumer parent )
 661 {
 662         // Get the actual object
 663         consumer_sdl this = parent->child;
 664
 665         // Stop the consumer
 666         mlt_consumer_stop( parent );
 667
 668         // Close the queue
 669         mlt_deque_close( this->queue );
 670
 671         // Destroy mutexes
 672         pthread_mutex_destroy( &this->audio_mutex );
 673         pthread_cond_destroy( &this->audio_cond );
 674
 675         // Now clean up the rest
 676         mlt_consumer_close( parent );
 677
 678         // Finally clean up this
 679         free( this );
 680 }