git.sesse.net Git - vlc/blob - modules/gui/macosx/voutqt.m

   1 /*****************************************************************************
   2  * vout.m: MacOS X video output module
   3  *****************************************************************************
   4  * Copyright (C) 2001-2003 VideoLAN
   5  * $Id: vout.m 8351 2004-08-02 13:06:38Z hartman $
   6  *
   7  * Authors: Colin Delacroix <colin@zoy.org>
   8  *          Florian G. Pflug <fgp@phlo.org>
   9  *          Jon Lech Johansen <jon-vl@nanocrew.net>
  10  *          Derk-Jan Hartman <hartman at videolan dot org>
  11  *          Eric Petit <titer@m0k.org>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  26  *****************************************************************************/
  27
  28 /*****************************************************************************
  29  * Preamble
  30  *****************************************************************************/
  31 #include <errno.h>                                                 /* ENOMEM */
  32 #include <stdlib.h>                                                /* free() */
  33 #include <string.h>                                            /* strerror() */
  34
  35 #include <QuickTime/QuickTime.h>
  36
  37 #include <vlc_keys.h>
  38
  39 #include "intf.h"
  40 #include "vout.h"
  41
  42 #define QT_MAX_DIRECTBUFFERS 10
  43 #define VL_MAX_DISPLAYS 16
  44
  45 /*****************************************************************************
  46  * VLCView interface
  47  *****************************************************************************/
  48 @interface VLCQTView : NSQuickDrawView
  49 {
  50     vout_thread_t * p_vout;
  51 }
  52
  53 - (id) initWithVout:(vout_thread_t *)p_vout;
  54
  55 @end
  56
  57 struct vout_sys_t
  58 {
  59     NSAutoreleasePool *o_pool;
  60     VLCWindow * o_window;
  61     VLCQTView * o_qtview;
  62
  63     vlc_bool_t  b_saved_frame;
  64     NSRect      s_frame;
  65
  66     CodecType i_codec;
  67     CGrafPtr p_qdport;
  68     ImageSequence i_seq;
  69     MatrixRecordPtr p_matrix;
  70     DecompressorComponent img_dc;
  71     ImageDescriptionHandle h_img_descr;
  72 };
  73
  74 struct picture_sys_t
  75 {
  76     void *p_data;
  77     unsigned int i_size;
  78 };
  79
  80 /*****************************************************************************
  81  * Local prototypes
  82  *****************************************************************************/
  83
  84 static int  InitVideo           ( vout_thread_t * );
  85 static void EndVideo            ( vout_thread_t * );
  86 static int  ManageVideo         ( vout_thread_t * );
  87 static void DisplayVideo        ( vout_thread_t *, picture_t * );
  88 static int  ControlVideo        ( vout_thread_t *, int, va_list );
  89
  90 static int CoToggleFullscreen( vout_thread_t *p_vout );
  91 static void QTScaleMatrix       ( vout_thread_t * );
  92 static int  QTCreateSequence    ( vout_thread_t * );
  93 static void QTDestroySequence   ( vout_thread_t * );
  94 static int  QTNewPicture        ( vout_thread_t *, picture_t * );
  95 static void QTFreePicture       ( vout_thread_t *, picture_t * );
  96
  97 /*****************************************************************************
  98  * OpenVideo: allocates MacOS X video thread output method
  99  *****************************************************************************
 100  * This function allocates and initializes a MacOS X vout method.
 101  *****************************************************************************/
 102 int E_(OpenVideoQT) ( vlc_object_t *p_this )
 103 {
 104     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 105     vlc_value_t val;
 106     OSErr err;
 107     int i_timeout;
 108
 109     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 110     if( p_vout->p_sys == NULL )
 111     {
 112         msg_Err( p_vout, "out of memory" );
 113         return( 1 );
 114     }
 115
 116     memset( p_vout->p_sys, 0, sizeof( vout_sys_t ) );
 117
 118     /* Wait for a MacOS X interface to appear. Timeout is 2 seconds. */
 119     for( i_timeout = 20 ; i_timeout-- ; )
 120     {
 121         if( NSApp == NULL )
 122         {
 123             msleep( INTF_IDLE_SLEEP );
 124         }
 125     }
 126
 127     if( NSApp == NULL )
 128     {
 129         /* no MacOS X intf, unable to communicate with MT */
 130         msg_Err( p_vout, "no MacOS X interface present" );
 131         free( p_vout->p_sys );
 132         return( 1 );
 133     }
 134
 135     p_vout->pf_init = InitVideo;
 136     p_vout->pf_end = EndVideo;
 137     p_vout->pf_manage = ManageVideo;
 138     p_vout->pf_render = NULL;
 139     p_vout->pf_display = DisplayVideo;
 140     p_vout->pf_control = ControlVideo;
 141
 142     p_vout->p_sys->o_pool = [[NSAutoreleasePool alloc] init];
 143
 144     var_Create( p_vout, "macosx-vdev", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 145     var_Create( p_vout, "macosx-fill", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 146     var_Create( p_vout, "macosx-stretch", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 147     var_Create( p_vout, "macosx-opaqueness", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
 148
 149     /* Initialize QuickTime */
 150     p_vout->p_sys->h_img_descr =
 151         (ImageDescriptionHandle)NewHandleClear( sizeof(ImageDescription) );
 152     p_vout->p_sys->p_matrix =
 153         (MatrixRecordPtr)malloc( sizeof(MatrixRecord) );
 154
 155     if( ( err = EnterMovies() ) != noErr )
 156     {
 157         msg_Err( p_vout, "EnterMovies failed: %d", err );
 158         free( p_vout->p_sys->p_matrix );
 159         DisposeHandle( (Handle)p_vout->p_sys->h_img_descr );
 160         free( p_vout->p_sys );
 161         return VLC_EGENERIC;
 162     }
 163
 164     /* Damn QT isn't thread safe. so keep a lock in the p_vlc object */
 165     vlc_mutex_lock( &p_vout->p_vlc->quicktime_lock );
 166
 167     /* Can we find the right chroma ? */
 168     err = FindCodec( kComponentVideoUnsigned, bestSpeedCodec,
 169                         nil, &p_vout->p_sys->img_dc );
 170
 171     vlc_mutex_unlock( &p_vout->p_vlc->quicktime_lock );
 172
 173     if( err == noErr && p_vout->p_sys->img_dc != 0 )
 174     {
 175         p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 176         p_vout->p_sys->i_codec = kComponentVideoUnsigned;
 177     }
 178     else
 179     {
 180         msg_Err( p_vout, "failed to find an appropriate codec" );
 181     }
 182
 183     if( p_vout->p_sys->img_dc == 0 )
 184     {
 185         free( p_vout->p_sys->p_matrix );
 186         DisposeHandle( (Handle)p_vout->p_sys->h_img_descr );
 187         free( p_vout->p_sys );
 188         return VLC_EGENERIC;
 189     }
 190
 191     /* Setup the menuitem for the multiple displays. Read the vlc preference (macosx-vdev) for the primary display */
 192     NSArray * o_screens = [NSScreen screens];
 193     if( [o_screens count] > 0 && var_Type( p_vout, "video-device" ) == 0 )
 194     {
 195         int i = 1;
 196         vlc_value_t val2, text;
 197         NSScreen * o_screen;
 198
 199         var_Get( p_vout, "macosx-vdev", &val );
 200
 201         var_Create( p_vout, "video-device", VLC_VAR_INTEGER |
 202                                             VLC_VAR_HASCHOICE );
 203         text.psz_string = _("Video device");
 204         var_Change( p_vout, "video-device", VLC_VAR_SETTEXT, &text, NULL );
 205
 206         NSEnumerator * o_enumerator = [o_screens objectEnumerator];
 207
 208         while( (o_screen = [o_enumerator nextObject]) != NULL )
 209         {
 210             char psz_temp[255];
 211             NSRect s_rect = [o_screen frame];
 212
 213             snprintf( psz_temp, sizeof(psz_temp)/sizeof(psz_temp[0])-1,
 214                       "%s %d (%dx%d)", _("Screen"), i,
 215                       (int)s_rect.size.width, (int)s_rect.size.height );
 216
 217             text.psz_string = psz_temp;
 218             val2.i_int = i;
 219             var_Change( p_vout, "video-device",
 220                         VLC_VAR_ADDCHOICE, &val2, &text );
 221
 222             if( ( i - 1 ) == val.i_int )
 223             {
 224                 var_Set( p_vout, "video-device", val2 );
 225             }
 226             i++;
 227         }
 228
 229         var_AddCallback( p_vout, "video-device", vout_VarCallback,
 230                          NULL );
 231
 232         val2.b_bool = VLC_TRUE;
 233         var_Set( p_vout, "intf-change", val2 );
 234     }
 235
 236     /* Spawn window */
 237     p_vout->p_sys->o_window =
 238         [[VLCWindow alloc] initWithVout: p_vout frame: nil];
 239
 240 #define o_qtview p_vout->p_sys->o_qtview
 241     o_qtview = [[VLCQTView alloc] initWithVout: p_vout];
 242     [p_vout->p_sys->o_window setContentView: o_qtview];
 243     [o_qtview autorelease];
 244
 245     /* Retrieve the QuickDraw port */
 246     [o_qtview lockFocus];
 247     p_vout->p_sys->p_qdport = [o_qtview qdPort];
 248     [o_qtview unlockFocus];
 249 #undef o_qtview
 250
 251     return VLC_SUCCESS;
 252 }
 253
 254 /*****************************************************************************
 255  * CloseVideo: destroy video thread output method
 256  *****************************************************************************/
 257 void E_(CloseVideoQT) ( vlc_object_t *p_this )
 258 {
 259     NSAutoreleasePool *o_pool = [[NSAutoreleasePool alloc] init];
 260     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 261
 262     [p_vout->p_sys->o_window close];
 263
 264     /* Clean Up Quicktime environment */
 265     ExitMovies();
 266     free( p_vout->p_sys->p_matrix );
 267     DisposeHandle( (Handle)p_vout->p_sys->h_img_descr );
 268
 269     [o_pool release];
 270     free( p_vout->p_sys );
 271 }
 272
 273 /*****************************************************************************
 274  * InitVideo: initialize video thread output method
 275  *****************************************************************************/
 276 static int InitVideo    ( vout_thread_t *p_vout )
 277 {
 278     picture_t *p_pic;
 279     int i_index;
 280
 281     I_OUTPUTPICTURES = 0;
 282
 283     /* Initialize the output structure; we already found a codec,
 284      * and the corresponding chroma we will be using. Since we can
 285      * arbitrary scale, stick to the coordinates and aspect. */
 286     p_vout->output.i_width  = p_vout->render.i_width;
 287     p_vout->output.i_height = p_vout->render.i_height;
 288     p_vout->output.i_aspect = p_vout->render.i_aspect;
 289
 290     SetPort( p_vout->p_sys->p_qdport );
 291     QTScaleMatrix( p_vout );
 292
 293     if( QTCreateSequence( p_vout ) )
 294     {
 295         msg_Err( p_vout, "unable to create sequence" );
 296         return( 1 );
 297     }
 298
 299     /* Try to initialize up to QT_MAX_DIRECTBUFFERS direct buffers */
 300     while( I_OUTPUTPICTURES < QT_MAX_DIRECTBUFFERS )
 301     {
 302         p_pic = NULL;
 303
 304         /* Find an empty picture slot */
 305         for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
 306         {
 307             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 308             {
 309                 p_pic = p_vout->p_picture + i_index;
 310                 break;
 311             }
 312         }
 313
 314         /* Allocate the picture */
 315         if( p_pic == NULL || QTNewPicture( p_vout, p_pic ) )
 316         {
 317             break;
 318         }
 319
 320         p_pic->i_status = DESTROYED_PICTURE;
 321         p_pic->i_type   = DIRECT_PICTURE;
 322
 323         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 324         I_OUTPUTPICTURES++;
 325     }
 326     return 0;
 327 }
 328
 329 /*****************************************************************************
 330  * EndVideo: terminate video thread output method
 331  *****************************************************************************/
 332 static void EndVideo( vout_thread_t *p_vout )
 333 {
 334     int i_index;
 335
 336     QTDestroySequence( p_vout );
 337
 338     /* Free the direct buffers we allocated */
 339     for( i_index = I_OUTPUTPICTURES; i_index; )
 340     {
 341         i_index--;
 342         QTFreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
 343     }
 344 }
 345
 346 /*****************************************************************************
 347  * ManageVideo: handle events
 348  *****************************************************************************
 349  * This function should be called regularly by video output thread. It manages
 350  * console events. It returns a non null value on error.
 351  *****************************************************************************/
 352 static int ManageVideo( vout_thread_t *p_vout )
 353 {
 354     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 355     {
 356         if( CoToggleFullscreen( p_vout ) )
 357         {
 358             return( 1 );
 359         }
 360
 361         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 362     }
 363
 364     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 365     {
 366         QTScaleMatrix( p_vout );
 367         SetDSequenceMatrix( p_vout->p_sys->i_seq,
 368                             p_vout->p_sys->p_matrix );
 369
 370         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 371     }
 372
 373     [p_vout->p_sys->o_window manage];
 374
 375     return( 0 );
 376 }
 377
 378 /*****************************************************************************
 379  * vout_Display: displays previously rendered output
 380  *****************************************************************************
 381  * This function sends the currently rendered image to the display.
 382  *****************************************************************************/
 383 static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
 384 {
 385     OSErr err;
 386     CodecFlags flags;
 387
 388     if( ( err = DecompressSequenceFrameWhen(
 389                     p_vout->p_sys->i_seq,
 390                     p_pic->p_sys->p_data,
 391                     p_pic->p_sys->i_size,
 392                     codecFlagUseImageBuffer, &flags, NULL, NULL ) != noErr ) )
 393     {
 394         msg_Warn( p_vout, "DecompressSequenceFrameWhen failed: %d", err );
 395     }
 396     else
 397     {
 398         QDFlushPortBuffer( p_vout->p_sys->p_qdport, nil );
 399     }
 400 }
 401
 402 /*****************************************************************************
 403  * ControlVideo: control facility for the vout
 404  *****************************************************************************/
 405 static int ControlVideo( vout_thread_t *p_vout, int i_query, va_list args )
 406 {
 407     vlc_bool_t b_arg;
 408
 409     switch( i_query )
 410     {
 411         case VOUT_SET_STAY_ON_TOP:
 412             b_arg = va_arg( args, vlc_bool_t );
 413             [p_vout->p_sys->o_window setOnTop: b_arg];
 414             return VLC_SUCCESS;
 415
 416         case VOUT_CLOSE:
 417         case VOUT_REPARENT:
 418         default:
 419             return vout_vaControlDefault( p_vout, i_query, args );
 420     }
 421 }
 422
 423 /*****************************************************************************
 424  * CoToggleFullscreen: toggle fullscreen
 425  *****************************************************************************
 426  * Returns 0 on success, 1 otherwise
 427  *****************************************************************************/
 428 static int CoToggleFullscreen( vout_thread_t *p_vout )
 429 {
 430     NSAutoreleasePool *o_pool = [[NSAutoreleasePool alloc] init];
 431
 432     QTDestroySequence( p_vout );
 433
 434     if( !p_vout->b_fullscreen )
 435     {
 436         /* Save window size and position */
 437         p_vout->p_sys->s_frame.size =
 438             [[p_vout->p_sys->o_window contentView] frame].size;
 439         p_vout->p_sys->s_frame.origin =
 440             [p_vout->p_sys->o_window frame].origin;
 441         p_vout->p_sys->b_saved_frame = VLC_TRUE;
 442     }
 443     [p_vout->p_sys->o_window close];
 444
 445     p_vout->b_fullscreen = !p_vout->b_fullscreen;
 446
 447     if( p_vout->p_sys->b_saved_frame )
 448     {
 449         p_vout->p_sys->o_window = [[VLCWindow alloc]
 450             initWithVout: p_vout frame: &p_vout->p_sys->s_frame];
 451     }
 452     else
 453     {
 454         p_vout->p_sys->o_window = [[VLCWindow alloc]
 455             initWithVout: p_vout frame: nil];
 456     }
 457
 458 #define o_qtview p_vout->p_sys->o_qtview
 459     o_qtview = [[VLCQTView alloc] initWithVout: p_vout];
 460     [p_vout->p_sys->o_window setContentView: o_qtview];
 461     [o_qtview autorelease];
 462
 463     /* Retrieve the QuickDraw port */
 464     [o_qtview lockFocus];
 465     p_vout->p_sys->p_qdport = [o_qtview qdPort];
 466     [o_qtview unlockFocus];
 467 #undef o_qtview
 468
 469     SetPort( p_vout->p_sys->p_qdport );
 470     QTScaleMatrix( p_vout );
 471
 472     if( QTCreateSequence( p_vout ) )
 473     {
 474         msg_Err( p_vout, "unable to create sequence" );
 475         return( 1 );
 476     }
 477
 478     [o_pool release];
 479     return 0;
 480 }
 481
 482 /*****************************************************************************
 483  * QTScaleMatrix: scale matrix
 484  *****************************************************************************/
 485 static void QTScaleMatrix( vout_thread_t *p_vout )
 486 {
 487     Rect s_rect;
 488     vlc_value_t val;
 489     unsigned int i_width, i_height;
 490     Fixed factor_x, factor_y;
 491     unsigned int i_offset_x = 0;
 492     unsigned int i_offset_y = 0;
 493
 494     GetPortBounds( p_vout->p_sys->p_qdport, &s_rect );
 495
 496     i_width = s_rect.right - s_rect.left;
 497     i_height = s_rect.bottom - s_rect.top;
 498
 499     var_Get( p_vout, "macosx-stretch", &val );
 500     if( val.b_bool )
 501     {
 502         factor_x = FixDiv( Long2Fix( i_width ),
 503                            Long2Fix( p_vout->output.i_width ) );
 504         factor_y = FixDiv( Long2Fix( i_height ),
 505                            Long2Fix( p_vout->output.i_height ) );
 506
 507     }
 508     else if( i_height * p_vout->output.i_aspect < i_width * VOUT_ASPECT_FACTOR )
 509     {
 510         int i_adj_width = i_height * p_vout->output.i_aspect /
 511                           VOUT_ASPECT_FACTOR;
 512
 513         factor_x = FixDiv( Long2Fix( i_adj_width ),
 514                            Long2Fix( p_vout->output.i_width ) );
 515         factor_y = FixDiv( Long2Fix( i_height ),
 516                            Long2Fix( p_vout->output.i_height ) );
 517
 518         i_offset_x = (i_width - i_adj_width) / 2;
 519     }
 520     else
 521     {
 522         int i_adj_height = i_width * VOUT_ASPECT_FACTOR /
 523                            p_vout->output.i_aspect;
 524
 525         factor_x = FixDiv( Long2Fix( i_width ),
 526                            Long2Fix( p_vout->output.i_width ) );
 527         factor_y = FixDiv( Long2Fix( i_adj_height ),
 528                            Long2Fix( p_vout->output.i_height ) );
 529
 530         i_offset_y = (i_height - i_adj_height) / 2;
 531     }
 532
 533     SetIdentityMatrix( p_vout->p_sys->p_matrix );
 534
 535     ScaleMatrix( p_vout->p_sys->p_matrix,
 536                  factor_x, factor_y,
 537                  Long2Fix(0), Long2Fix(0) );
 538
 539     TranslateMatrix( p_vout->p_sys->p_matrix,
 540                  Long2Fix(i_offset_x), Long2Fix(i_offset_y) );
 541 }
 542
 543 /*****************************************************************************
 544  * QTCreateSequence: create a new sequence
 545  *****************************************************************************
 546  * Returns 0 on success, 1 otherwise
 547  *****************************************************************************/
 548 static int QTCreateSequence( vout_thread_t *p_vout )
 549 {
 550     OSErr err;
 551     ImageDescriptionPtr p_descr;
 552
 553     HLock( (Handle)p_vout->p_sys->h_img_descr );
 554     p_descr = *p_vout->p_sys->h_img_descr;
 555
 556     p_descr->idSize = sizeof(ImageDescription);
 557     p_descr->cType = p_vout->p_sys->i_codec;
 558     p_descr->version = 2;
 559     p_descr->revisionLevel = 0;
 560     p_descr->vendor = 'mpla';
 561     p_descr->width = p_vout->output.i_width;
 562     p_descr->height = p_vout->output.i_height;
 563     p_descr->hRes = Long2Fix(72);
 564     p_descr->vRes = Long2Fix(72);
 565     p_descr->spatialQuality = codecLosslessQuality;
 566     p_descr->frameCount = 1;
 567     p_descr->clutID = -1;
 568     p_descr->dataSize = 0;
 569     p_descr->depth = 24;
 570
 571     HUnlock( (Handle)p_vout->p_sys->h_img_descr );
 572
 573     if( ( err = DecompressSequenceBeginS(
 574                               &p_vout->p_sys->i_seq,
 575                               p_vout->p_sys->h_img_descr,
 576                               NULL,
 577                               (p_descr->width * p_descr->height * 16) / 8,
 578                               p_vout->p_sys->p_qdport,
 579                               NULL, NULL,
 580                               p_vout->p_sys->p_matrix,
 581                               srcCopy, NULL,
 582                               codecFlagUseImageBuffer,
 583                               codecLosslessQuality,
 584                               bestSpeedCodec ) ) )
 585     {
 586         msg_Err( p_vout, "DecompressSequenceBeginS failed: %d", err );
 587         return( 1 );
 588     }
 589
 590     return( 0 );
 591 }
 592
 593 /*****************************************************************************
 594  * QTDestroySequence: destroy sequence
 595  *****************************************************************************/
 596 static void QTDestroySequence( vout_thread_t *p_vout )
 597 {
 598     CDSequenceEnd( p_vout->p_sys->i_seq );
 599 }
 600
 601 /*****************************************************************************
 602  * QTNewPicture: allocate a picture
 603  *****************************************************************************
 604  * Returns 0 on success, 1 otherwise
 605  *****************************************************************************/
 606 static int QTNewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 607 {
 608     /* We know the chroma, allocate a buffer which will be used
 609      * directly by the decoder */
 610     p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 611
 612     if( p_pic->p_sys == NULL )
 613     {
 614         return( -1 );
 615     }
 616
 617     vout_InitPicture( VLC_OBJECT( p_vout), p_pic, p_vout->output.i_chroma,
 618                       p_vout->output.i_width, p_vout->output.i_height,
 619                       p_vout->output.i_aspect );
 620
 621     switch( p_vout->output.i_chroma )
 622     {
 623         case VLC_FOURCC('Y','U','Y','2'):
 624             p_pic->p_sys->i_size = p_vout->output.i_width * p_vout->output.i_height * 2;
 625
 626             /* Allocate the memory buffer */
 627             p_pic->p_data = vlc_memalign( &p_pic->p_data_orig,
 628                                           16, p_pic->p_sys->i_size );
 629
 630             p_pic->p[0].p_pixels = p_pic->p_data;
 631             p_pic->p[0].i_lines = p_vout->output.i_height;
 632             p_pic->p[0].i_visible_lines = p_vout->output.i_height;
 633             p_pic->p[0].i_pitch = p_vout->output.i_width * 2;
 634             p_pic->p[0].i_pixel_pitch = 1;
 635             p_pic->p[0].i_visible_pitch = p_vout->output.i_width * 2;
 636             p_pic->i_planes = 1;
 637
 638             p_pic->p_sys->p_data = (void *)p_pic->p[0].p_pixels;
 639
 640             break;
 641
 642     default:
 643         /* Unknown chroma, tell the guy to get lost */
 644         free( p_pic->p_sys );
 645         msg_Err( p_vout, "never heard of chroma 0x%.8x (%4.4s)",
 646                  p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma );
 647         p_pic->i_planes = 0;
 648         return( -1 );
 649     }
 650
 651     return( 0 );
 652 }
 653
 654 /*****************************************************************************
 655  * QTFreePicture: destroy a picture allocated with QTNewPicture
 656  *****************************************************************************/
 657 static void QTFreePicture( vout_thread_t *p_vout, picture_t *p_pic )
 658 {
 659     switch( p_vout->output.i_chroma )
 660     {
 661         case VLC_FOURCC('I','4','2','0'):
 662             free( p_pic->p_data_orig );
 663             break;
 664     }
 665
 666     free( p_pic->p_sys );
 667 }
 668
 669 /*****************************************************************************
 670  * VLCQTView implementation
 671  *****************************************************************************/
 672 @implementation VLCQTView
 673
 674 - (id) initWithVout:(vout_thread_t *)_p_vout
 675 {
 676     p_vout = _p_vout;
 677     return [super init];
 678 }
 679
 680 - (void)drawRect:(NSRect)rect
 681 {
 682     [[NSColor blackColor] set];
 683     NSRectFill( rect );
 684     [super drawRect: rect];
 685
 686     p_vout->i_changes |= VOUT_SIZE_CHANGE;
 687 }
 688
 689 @end