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

   1 /*
   2  * consumer_sdl_still.c -- A Simple DirectMedia Layer consumer
   3  * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
   4  * Author: Charles Yates
   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 <framework/mlt_consumer.h>
  22 #include <framework/mlt_frame.h>
  23 #include <framework/mlt_deque.h>
  24 #include <framework/mlt_factory.h>
  25 #include <framework/mlt_filter.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <pthread.h>
  30 #include <SDL/SDL.h>
  31 #include <SDL/SDL_syswm.h>
  32 #include <sys/time.h>
  33
  34 /** This classes definition.
  35 */
  36
  37 typedef struct consumer_sdl_s *consumer_sdl;
  38
  39 struct consumer_sdl_s
  40 {
  41         struct mlt_consumer_s parent;
  42         mlt_properties properties;
  43         pthread_t thread;
  44         int joined;
  45         int running;
  46         int window_width;
  47         int window_height;
  48         int width;
  49         int height;
  50         int playing;
  51         int sdl_flags;
  52         SDL_Surface *sdl_screen;
  53         SDL_Rect rect;
  54         uint8_t *buffer;
  55         int last_position;
  56         mlt_producer last_producer;
  57         int filtered;
  58 };
  59
  60 /** Forward references to static functions.
  61 */
  62
  63 static int consumer_start( mlt_consumer parent );
  64 static int consumer_stop( mlt_consumer parent );
  65 static int consumer_is_stopped( mlt_consumer parent );
  66 static void consumer_close( mlt_consumer parent );
  67 static void *consumer_thread( void * );
  68 static int consumer_get_dimensions( int *width, int *height );
  69 static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args );
  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_still_init( mlt_profile profile, mlt_service_type type, const char *id, 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, profile ) == 0 )
  82         {
  83                 // Get the parent consumer object
  84                 mlt_consumer parent = &this->parent;
  85
  86                 // get a handle on properties
  87                 mlt_service service = MLT_CONSUMER_SERVICE( parent );
  88                 this->properties = MLT_SERVICE_PROPERTIES( service );
  89
  90                 // We have stuff to clean up, so override the close method
  91                 parent->close = consumer_close;
  92
  93                 // Default scaler (for now we'll use nearest)
  94                 mlt_properties_set( this->properties, "rescale", "nearest" );
  95
  96                 // We're always going to run this in non-realtime mode
  97                 mlt_properties_set( this->properties, "real_time", "0" );
  98
  99                 // Default progressive true
 100                 mlt_properties_set_int( this->properties, "progressive", 1 );
 101
 102                 // Ensure we don't join on a non-running object
 103                 this->joined = 1;
 104
 105                 // process actual param
 106                 if ( arg == NULL || sscanf( arg, "%dx%d", &this->width, &this->height ) != 2 )
 107                 {
 108                         this->width = mlt_properties_get_int( this->properties, "width" );
 109                         this->height = mlt_properties_get_int( this->properties, "height" );
 110                 }
 111                 else
 112                 {
 113                         mlt_properties_set_int( this->properties, "width", this->width );
 114                         mlt_properties_set_int( this->properties, "height", this->height );
 115                 }
 116
 117                 // Set the sdl flags
 118                 this->sdl_flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL | SDL_RESIZABLE | SDL_DOUBLEBUF;
 119
 120                 // Allow thread to be started/stopped
 121                 parent->start = consumer_start;
 122                 parent->stop = consumer_stop;
 123                 parent->is_stopped = consumer_is_stopped;
 124
 125                 // Register specific events
 126                 mlt_events_register( this->properties, "consumer-sdl-event", ( mlt_transmitter )consumer_sdl_event );
 127
 128                 // Return the consumer produced
 129                 return parent;
 130         }
 131
 132         // malloc or consumer init failed
 133         free( this );
 134
 135         // Indicate failure
 136         return NULL;
 137 }
 138
 139 static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
 140 {
 141         if ( listener != NULL )
 142                 listener( owner, this, ( SDL_Event * )args[ 0 ] );
 143 }
 144
 145 static int consumer_start( mlt_consumer parent )
 146 {
 147         consumer_sdl this = parent->child;
 148
 149         if ( !this->running )
 150         {
 151                 int preview_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "preview_off" );
 152                 int sdl_started = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" );
 153
 154                 // Attach a colour space converter
 155                 if ( !this->filtered )
 156                 {
 157                         mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( parent ) );
 158                         mlt_filter filter = mlt_factory_filter( profile, "avcolour_space", NULL );
 159                         mlt_properties_set_int( MLT_FILTER_PROPERTIES( filter ), "forced", mlt_image_yuv422 );
 160                         mlt_service_attach( MLT_CONSUMER_SERVICE( parent ), filter );
 161                         mlt_filter_close( filter );
 162                         this->filtered = 1;
 163                 }
 164
 165                 consumer_stop( parent );
 166
 167                 this->last_position = -1;
 168                 this->running = 1;
 169                 this->joined = 0;
 170
 171                 // Allow the user to force resizing to window size
 172                 this->width = mlt_properties_get_int( this->properties, "width" );
 173                 this->height = mlt_properties_get_int( this->properties, "height" );
 174
 175                 // Default window size
 176                 double display_ratio = mlt_properties_get_double( this->properties, "display_ratio" );
 177                 this->window_width = ( double )this->height * display_ratio;
 178                 this->window_height = this->height;
 179
 180                 if ( sdl_started == 0 && preview_off == 0 )
 181                 {
 182                         if ( SDL_Init( SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE ) < 0 )
 183                         {
 184                                 fprintf( stderr, "Failed to initialize SDL: %s\n", SDL_GetError() );
 185                                 return -1;
 186                         }
 187
 188                         SDL_EnableKeyRepeat( SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL );
 189                         SDL_EnableUNICODE( 1 );
 190                 }
 191                 else if ( preview_off == 0 )
 192                 {
 193                         if ( SDL_GetVideoSurface( ) != NULL )
 194                         {
 195                                 this->sdl_screen = SDL_GetVideoSurface( );
 196                         }
 197                 }
 198
 199                 if ( this->sdl_screen == NULL && preview_off == 0 )
 200                         this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
 201
 202                 pthread_create( &this->thread, NULL, consumer_thread, this );
 203         }
 204
 205         return 0;
 206 }
 207
 208 static int consumer_stop( mlt_consumer parent )
 209 {
 210         // Get the actual object
 211         consumer_sdl this = parent->child;
 212
 213         if ( this->joined == 0 )
 214         {
 215                 int preview_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "preview_off" );
 216                 int sdl_started = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" );
 217
 218                 // Kill the thread and clean up
 219                 this->running = 0;
 220
 221                 pthread_join( this->thread, NULL );
 222                 this->joined = 1;
 223
 224                 if ( sdl_started == 0 && preview_off == 0 )
 225                         SDL_Quit( );
 226
 227                 this->sdl_screen = NULL;
 228         }
 229
 230         return 0;
 231 }
 232
 233 static int consumer_is_stopped( mlt_consumer parent )
 234 {
 235         consumer_sdl this = parent->child;
 236         return !this->running;
 237 }
 238
 239 static int sdl_lock_display( )
 240 {
 241         SDL_Surface *screen = SDL_GetVideoSurface( );
 242         return screen != NULL && ( !SDL_MUSTLOCK( screen ) || SDL_LockSurface( screen ) >= 0 );
 243 }
 244
 245 static void sdl_unlock_display( )
 246 {
 247         SDL_Surface *screen = SDL_GetVideoSurface( );
 248         if ( screen != NULL && SDL_MUSTLOCK( screen ) )
 249                 SDL_UnlockSurface( screen );
 250 }
 251
 252 static inline void display_1( SDL_Surface *screen, SDL_Rect rect, uint8_t *image, int width, int height )
 253 {
 254         // Generate the affine transform scaling values
 255         if ( rect.w == 0 || rect.h == 0 ) return;
 256         int scale_width = ( width << 16 ) / rect.w;
 257         int scale_height = ( height << 16 ) / rect.h;
 258         int stride = width * 3;
 259         int x, y, row_index;
 260         uint8_t *q, *row;
 261
 262         // Constants defined for clarity and optimisation
 263         int scanlength = screen->pitch;
 264         uint8_t *start = ( uint8_t * )screen->pixels + rect.y * scanlength + rect.x;
 265         uint8_t *p;
 266
 267         // Iterate through the screen using a very basic scaling algorithm
 268         for ( y = 0; y < rect.h; y ++ )
 269         {
 270                 p = start;
 271                 row_index = ( 32768 + scale_height * y ) >> 16;
 272                 row = image + stride * row_index;
 273                 for ( x = 0; x < rect.w; x ++ )
 274                 {
 275                         q = row + ( ( ( 32768 + scale_width * x ) >> 16 ) * 3 );
 276                         *p ++ = SDL_MapRGB( screen->format, *q, *( q + 1 ), *( q + 2 ) );
 277                 }
 278                 start += scanlength;
 279         }
 280 }
 281
 282 static inline void display_2( SDL_Surface *screen, SDL_Rect rect, uint8_t *image, int width, int height )
 283 {
 284         // Generate the affine transform scaling values
 285         if ( rect.w == 0 || rect.h == 0 ) return;
 286         int scale_width = ( width << 16 ) / rect.w;
 287         int scale_height = ( height << 16 ) / rect.h;
 288         int stride = width * 3;
 289         int x, y, row_index;
 290         uint8_t *q, *row;
 291
 292         // Constants defined for clarity and optimisation
 293         int scanlength = screen->pitch / 2;
 294         uint16_t *start = ( uint16_t * )screen->pixels + rect.y * scanlength + rect.x;
 295         uint16_t *p;
 296
 297         // Iterate through the screen using a very basic scaling algorithm
 298         for ( y = 0; y < rect.h; y ++ )
 299         {
 300                 p = start;
 301                 row_index = ( 32768 + scale_height * y ) >> 16;
 302                 row = image + stride * row_index;
 303                 for ( x = 0; x < rect.w; x ++ )
 304                 {
 305                         q = row + ( ( ( 32768 + scale_width * x ) >> 16 ) * 3 );
 306                         *p ++ = SDL_MapRGB( screen->format, *q, *( q + 1 ), *( q + 2 ) );
 307                 }
 308                 start += scanlength;
 309         }
 310 }
 311
 312 static inline void display_3( SDL_Surface *screen, SDL_Rect rect, uint8_t *image, int width, int height )
 313 {
 314         // Generate the affine transform scaling values
 315         if ( rect.w == 0 || rect.h == 0 ) return;
 316         int scale_width = ( width << 16 ) / rect.w;
 317         int scale_height = ( height << 16 ) / rect.h;
 318         int stride = width * 3;
 319         int x, y, row_index;
 320         uint8_t *q, *row;
 321
 322         // Constants defined for clarity and optimisation
 323         int scanlength = screen->pitch;
 324         uint8_t *start = ( uint8_t * )screen->pixels + rect.y * scanlength + rect.x;
 325         uint8_t *p;
 326         uint32_t pixel;
 327
 328         // Iterate through the screen using a very basic scaling algorithm
 329         for ( y = 0; y < rect.h; y ++ )
 330         {
 331                 p = start;
 332                 row_index = ( 32768 + scale_height * y ) >> 16;
 333                 row = image + stride * row_index;
 334                 for ( x = 0; x < rect.w; x ++ )
 335                 {
 336                         q = row + ( ( ( 32768 + scale_width * x ) >> 16 ) * 3 );
 337                         pixel = SDL_MapRGB( screen->format, *q, *( q + 1 ), *( q + 2 ) );
 338                         *p ++ = (pixel & 0xFF0000) >> 16;
 339                         *p ++ = (pixel & 0x00FF00) >> 8;
 340                         *p ++ = (pixel & 0x0000FF);
 341                 }
 342                 start += scanlength;
 343         }
 344 }
 345
 346 static inline void display_4( SDL_Surface *screen, SDL_Rect rect, uint8_t *image, int width, int height )
 347 {
 348         // Generate the affine transform scaling values
 349         if ( rect.w == 0 || rect.h == 0 ) return;
 350         int scale_width = ( width << 16 ) / rect.w;
 351         int scale_height = ( height << 16 ) / rect.h;
 352         int stride = width * 3;
 353         int x, y, row_index;
 354         uint8_t *q, *row;
 355
 356         // Constants defined for clarity and optimisation
 357         int scanlength = screen->pitch / 4;
 358         uint32_t *start = ( uint32_t * )screen->pixels + rect.y * scanlength + rect.x;
 359         uint32_t *p;
 360
 361         // Iterate through the screen using a very basic scaling algorithm
 362         for ( y = 0; y < rect.h; y ++ )
 363         {
 364                 p = start;
 365                 row_index = ( 32768 + scale_height * y ) >> 16;
 366                 row = image + stride * row_index;
 367                 for ( x = 0; x < rect.w; x ++ )
 368                 {
 369                         q = row + ( ( ( 32768 + scale_width * x ) >> 16 ) * 3 );
 370                         *p ++ = SDL_MapRGB( screen->format, *q, *( q + 1 ), *( q + 2 ) );
 371                 }
 372                 start += scanlength;
 373         }
 374 }
 375
 376 static int consumer_play_video( consumer_sdl this, mlt_frame frame )
 377 {
 378         // Get the properties of this consumer
 379         mlt_properties properties = this->properties;
 380
 381         mlt_image_format vfmt = mlt_image_rgb24;
 382         int height = this->height;
 383         int width = this->width;
 384         uint8_t *image = NULL;
 385         int changed = 0;
 386         double display_ratio = mlt_properties_get_double( this->properties, "display_ratio" );
 387
 388         void ( *lock )( void ) = mlt_properties_get_data( properties, "app_lock", NULL );
 389         void ( *unlock )( void ) = mlt_properties_get_data( properties, "app_unlock", NULL );
 390
 391         if ( lock != NULL ) lock( );
 392
 393         sdl_lock_display();
 394
 395         // Handle events
 396         if ( this->sdl_screen != NULL )
 397         {
 398                 SDL_Event event;
 399
 400                 changed = consumer_get_dimensions( &this->window_width, &this->window_height );
 401
 402                 while ( SDL_PollEvent( &event ) )
 403                 {
 404                         mlt_events_fire( this->properties, "consumer-sdl-event", &event, NULL );
 405
 406                         switch( event.type )
 407                         {
 408                                 case SDL_VIDEORESIZE:
 409                                         this->window_width = event.resize.w;
 410                                         this->window_height = event.resize.h;
 411                                         changed = 1;
 412                                         break;
 413                                 case SDL_QUIT:
 414                                         this->running = 0;
 415                                         break;
 416                                 case SDL_KEYDOWN:
 417                                         {
 418                                                 mlt_producer producer = mlt_properties_get_data( properties, "transport_producer", NULL );
 419                                                 char keyboard[ 2 ] = " ";
 420                                                 void (*callback)( mlt_producer, char * ) = mlt_properties_get_data( properties, "transport_callback", NULL );
 421                                                 if ( callback != NULL && producer != NULL && event.key.keysym.unicode < 0x80 && event.key.keysym.unicode > 0 )
 422                                                 {
 423                                                         keyboard[ 0 ] = ( char )event.key.keysym.unicode;
 424                                                         callback( producer, keyboard );
 425                                                 }
 426                                         }
 427                                         break;
 428                         }
 429                 }
 430         }
 431
 432         if ( this->sdl_screen == NULL || changed )
 433         {
 434                 // open SDL window
 435                 this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
 436                 if ( consumer_get_dimensions( &this->window_width, &this->window_height ) )
 437                         this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
 438                 uint32_t color = mlt_properties_get_int( this->properties, "window_background" );
 439                 SDL_FillRect( this->sdl_screen, NULL, color >> 8 );
 440                 changed = 1;
 441         }
 442         else
 443         {
 444                 changed = 1;
 445         }
 446
 447         if ( changed == 0 &&
 448                  this->last_position == mlt_frame_get_position( frame ) &&
 449                  this->last_producer == mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "_producer", NULL ) )
 450         {
 451                 sdl_unlock_display( );
 452                 if ( unlock != NULL ) unlock( );
 453                 return 0;
 454         }
 455
 456         // Update last frame shown info
 457         this->last_position = mlt_frame_get_position( frame );
 458         this->last_producer = mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "_producer", NULL );
 459
 460         // Get the image, width and height
 461         mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
 462         mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
 463
 464         if ( image != NULL )
 465         {
 466                 char *rescale = mlt_properties_get( properties, "rescale" );
 467                 if ( rescale != NULL && strcmp( rescale, "none" ) )
 468                 {
 469                         double this_aspect = display_ratio / ( ( double )this->window_width / ( double )this->window_height );
 470                         this->rect.w = this_aspect * this->window_width;
 471                         this->rect.h = this->window_height;
 472                         if ( this->rect.w > this->window_width )
 473                         {
 474                                 this->rect.w = this->window_width;
 475                                 this->rect.h = ( 1.0 / this_aspect ) * this->window_height;
 476                         }
 477                 }
 478                 else
 479                 {
 480                         double frame_aspect = mlt_frame_get_aspect_ratio( frame ) * width / height;
 481                         this->rect.w = frame_aspect * this->window_height;
 482                         this->rect.h = this->window_height;
 483                         if ( this->rect.w > this->window_width )
 484                         {
 485                                 this->rect.w = this->window_width;
 486                                 this->rect.h = ( 1.0 / frame_aspect ) * this->window_width;
 487                         }
 488                 }
 489
 490                 this->rect.x = ( this->window_width - this->rect.w ) / 2;
 491                 this->rect.y = ( this->window_height - this->rect.h ) / 2;
 492
 493                 mlt_properties_set_int( this->properties, "rect_x", this->rect.x );
 494                 mlt_properties_set_int( this->properties, "rect_y", this->rect.y );
 495                 mlt_properties_set_int( this->properties, "rect_w", this->rect.w );
 496                 mlt_properties_set_int( this->properties, "rect_h", this->rect.h );
 497         }
 498
 499         if ( !mlt_consumer_is_stopped( &this->parent ) && SDL_GetVideoSurface( ) != NULL && this->sdl_screen != NULL && this->sdl_screen->pixels != NULL )
 500         {
 501                 switch( this->sdl_screen->format->BytesPerPixel )
 502                 {
 503                         case 1:
 504                                 display_1( this->sdl_screen, this->rect, image, width, height );
 505                                 break;
 506                         case 2:
 507                                 display_2( this->sdl_screen, this->rect, image, width, height );
 508                                 break;
 509                         case 3:
 510                                 display_3( this->sdl_screen, this->rect, image, width, height );
 511                                 break;
 512                         case 4:
 513                                 display_4( this->sdl_screen, this->rect, image, width, height );
 514                                 break;
 515                         default:
 516                                 fprintf( stderr, "Unsupported video depth %d\n", this->sdl_screen->format->BytesPerPixel );
 517                                 break;
 518                 }
 519
 520                 // Flip it into sight
 521                 SDL_Flip( this->sdl_screen );
 522         }
 523
 524         sdl_unlock_display();
 525
 526         if ( unlock != NULL ) unlock( );
 527
 528         return 1;
 529 }
 530
 531 /** Threaded wrapper for pipe.
 532 */
 533
 534 static void *consumer_thread( void *arg )
 535 {
 536         // Identify the arg
 537         consumer_sdl this = arg;
 538
 539         // Get the consumer
 540         mlt_consumer consumer = &this->parent;
 541         mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
 542
 543         // internal intialization
 544         mlt_frame frame = NULL;
 545         mlt_image_format vfmt = mlt_image_rgb24a;
 546         int height = this->height;
 547         int width = this->width;
 548         uint8_t *image = NULL;
 549
 550         // Allow the hosting app to provide the preview
 551         int preview_off = mlt_properties_get_int( properties, "preview_off" );
 552         mlt_image_format preview_format = mlt_properties_get_int( properties, "preview_format" );
 553
 554         // Check if a specific colour space has been requested
 555         if ( preview_off && preview_format != mlt_image_none )
 556                 vfmt = preview_format;
 557
 558         // Loop until told not to
 559         while( this->running )
 560         {
 561                 // Get a frame from the attached producer
 562                 frame = mlt_consumer_rt_frame( consumer );
 563
 564                 // Ensure that we have a frame
 565                 if ( this->running && frame != NULL )
 566                 {
 567                         if ( preview_off == 0 )
 568                         {
 569                                 consumer_play_video( this, frame );
 570                         }
 571                         else
 572                         {
 573                                 mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
 574                                 mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "format", vfmt );
 575                                 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
 576                         }
 577                         mlt_frame_close( frame );
 578                 }
 579                 else
 580                 {
 581                         if ( frame ) mlt_frame_close( frame );
 582                         this->running = 0;
 583                 }
 584         }
 585
 586         return NULL;
 587 }
 588
 589 static int consumer_get_dimensions( int *width, int *height )
 590 {
 591         int changed = 0;
 592
 593         // SDL windows manager structure
 594         SDL_SysWMinfo wm;
 595
 596         // Specify the SDL Version
 597         SDL_VERSION( &wm.version );
 598
 599         // Get the wm structure
 600         if ( SDL_GetWMInfo( &wm ) == 1 )
 601         {
 602 #ifndef __DARWIN__
 603                 // Check that we have the X11 wm
 604                 if ( wm.subsystem == SDL_SYSWM_X11 )
 605                 {
 606                         // Get the SDL window
 607                         Window window = wm.info.x11.window;
 608
 609                         // Get the display session
 610                         Display *display = wm.info.x11.display;
 611
 612                         // Get the window attributes
 613                         XWindowAttributes attr;
 614                         XGetWindowAttributes( display, window, &attr );
 615
 616                         // Determine whether window has changed
 617                         changed = *width != attr.width || *height != attr.height;
 618
 619                         // Return width and height
 620                         *width = attr.width;
 621                         *height = attr.height;
 622                 }
 623 #endif
 624         }
 625
 626         return changed;
 627 }
 628
 629 /** Callback to allow override of the close method.
 630 */
 631
 632 static void consumer_close( mlt_consumer parent )
 633 {
 634         // Get the actual object
 635         consumer_sdl this = parent->child;
 636
 637         // Stop the consumer
 638         mlt_consumer_stop( parent );
 639
 640         // Now clean up the rest
 641         mlt_consumer_close( parent );
 642
 643         // Finally clean up this
 644         free( this );
 645 }