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     [p_vout->p_sys->o_window release];
 264
 265     /* Clean Up Quicktime environment */
 266     ExitMovies();
 267     free( p_vout->p_sys->p_matrix );
 268     DisposeHandle( (Handle)p_vout->p_sys->h_img_descr );
 269
 270     [o_pool release];
 271     free( p_vout->p_sys );
 272 }
 273
 274 /*****************************************************************************
 275  * InitVideo: initialize video thread output method
 276  *****************************************************************************/
 277 static int InitVideo    ( vout_thread_t *p_vout )
 278 {
 279     picture_t *p_pic;
 280     int i_index;
 281
 282     I_OUTPUTPICTURES = 0;
 283
 284     /* Initialize the output structure; we already found a codec,
 285      * and the corresponding chroma we will be using. Since we can
 286      * arbitrary scale, stick to the coordinates and aspect. */
 287     p_vout->output.i_width  = p_vout->render.i_width;
 288     p_vout->output.i_height = p_vout->render.i_height;
 289     p_vout->output.i_aspect = p_vout->render.i_aspect;
 290
 291     SetPort( p_vout->p_sys->p_qdport );
 292     QTScaleMatrix( p_vout );
 293
 294     if( QTCreateSequence( p_vout ) )
 295     {
 296         msg_Err( p_vout, "unable to create sequence" );
 297         return( 1 );
 298     }
 299
 300     /* Try to initialize up to QT_MAX_DIRECTBUFFERS direct buffers */
 301     while( I_OUTPUTPICTURES < QT_MAX_DIRECTBUFFERS )
 302     {
 303         p_pic = NULL;
 304
 305         /* Find an empty picture slot */
 306         for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
 307         {
 308             if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 309             {
 310                 p_pic = p_vout->p_picture + i_index;
 311                 break;
 312             }
 313         }
 314
 315         /* Allocate the picture */
 316         if( p_pic == NULL || QTNewPicture( p_vout, p_pic ) )
 317         {
 318             break;
 319         }
 320
 321         p_pic->i_status = DESTROYED_PICTURE;
 322         p_pic->i_type   = DIRECT_PICTURE;
 323
 324         PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 325         I_OUTPUTPICTURES++;
 326     }
 327     return 0;
 328 }
 329
 330 /*****************************************************************************
 331  * EndVideo: terminate video thread output method
 332  *****************************************************************************/
 333 static void EndVideo( vout_thread_t *p_vout )
 334 {
 335     int i_index;
 336
 337     QTDestroySequence( p_vout );
 338
 339     /* Free the direct buffers we allocated */
 340     for( i_index = I_OUTPUTPICTURES; i_index; )
 341     {
 342         i_index--;
 343         QTFreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
 344     }
 345 }
 346
 347 /*****************************************************************************
 348  * ManageVideo: handle events
 349  *****************************************************************************
 350  * This function should be called regularly by video output thread. It manages
 351  * console events. It returns a non null value on error.
 352  *****************************************************************************/
 353 static int ManageVideo( vout_thread_t *p_vout )
 354 {
 355     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 356     {
 357         if( CoToggleFullscreen( p_vout ) )
 358         {
 359             return( 1 );
 360         }
 361
 362         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 363     }
 364
 365     if( p_vout->i_changes & VOUT_SIZE_CHANGE )
 366     {
 367         QTScaleMatrix( p_vout );
 368         SetDSequenceMatrix( p_vout->p_sys->i_seq,
 369                             p_vout->p_sys->p_matrix );
 370
 371         p_vout->i_changes &= ~VOUT_SIZE_CHANGE;
 372     }
 373
 374     [p_vout->p_sys->o_window manage];
 375
 376     return( 0 );
 377 }
 378
 379 /*****************************************************************************
 380  * vout_Display: displays previously rendered output
 381  *****************************************************************************
 382  * This function sends the currently rendered image to the display.
 383  *****************************************************************************/
 384 static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
 385 {
 386     OSErr err;
 387     CodecFlags flags;
 388
 389     if( ( err = DecompressSequenceFrameWhen(
 390                     p_vout->p_sys->i_seq,
 391                     p_pic->p_sys->p_data,
 392                     p_pic->p_sys->i_size,
 393                     codecFlagUseImageBuffer, &flags, NULL, NULL ) != noErr ) )
 394     {
 395         msg_Warn( p_vout, "DecompressSequenceFrameWhen failed: %d", err );
 396     }
 397     else
 398     {
 399         QDFlushPortBuffer( p_vout->p_sys->p_qdport, nil );
 400     }
 401 }
 402
 403 /*****************************************************************************
 404  * ControlVideo: control facility for the vout
 405  *****************************************************************************/
 406 static int ControlVideo( vout_thread_t *p_vout, int i_query, va_list args )
 407 {
 408     vlc_bool_t b_arg;
 409
 410     switch( i_query )
 411     {
 412         case VOUT_SET_STAY_ON_TOP:
 413             b_arg = va_arg( args, vlc_bool_t );
 414             [p_vout->p_sys->o_window setOnTop: b_arg];
 415             return VLC_SUCCESS;
 416
 417         case VOUT_CLOSE:
 418         case VOUT_REPARENT:
 419         default:
 420             return vout_vaControlDefault( p_vout, i_query, args );
 421     }
 422 }
 423
 424 /*****************************************************************************
 425  * CoToggleFullscreen: toggle fullscreen
 426  *****************************************************************************
 427  * Returns 0 on success, 1 otherwise
 428  *****************************************************************************/
 429 static int CoToggleFullscreen( vout_thread_t *p_vout )
 430 {
 431     NSAutoreleasePool *o_pool = [[NSAutoreleasePool alloc] init];
 432
 433     QTDestroySequence( p_vout );
 434
 435     if( !p_vout->b_fullscreen )
 436     {
 437         /* Save window size and position */
 438         p_vout->p_sys->s_frame.size =
 439             [[p_vout->p_sys->o_window contentView] frame].size;
 440         p_vout->p_sys->s_frame.origin =
 441             [p_vout->p_sys->o_window frame].origin;
 442         p_vout->p_sys->b_saved_frame = VLC_TRUE;
 443     }
 444     [p_vout->p_sys->o_window close];
 445
 446     p_vout->b_fullscreen = !p_vout->b_fullscreen;
 447
 448     if( p_vout->p_sys->b_saved_frame )
 449     {
 450         p_vout->p_sys->o_window = [[VLCWindow alloc]
 451             initWithVout: p_vout frame: &p_vout->p_sys->s_frame];
 452     }
 453     else
 454     {
 455         p_vout->p_sys->o_window = [[VLCWindow alloc]
 456             initWithVout: p_vout frame: nil];
 457     }
 458
 459 #define o_qtview p_vout->p_sys->o_qtview
 460     o_qtview = [[VLCQTView alloc] initWithVout: p_vout];
 461     [p_vout->p_sys->o_window setContentView: o_qtview];
 462     [o_qtview autorelease];
 463
 464     /* Retrieve the QuickDraw port */
 465     [o_qtview lockFocus];
 466     p_vout->p_sys->p_qdport = [o_qtview qdPort];
 467     [o_qtview unlockFocus];
 468 #undef o_qtview
 469
 470     SetPort( p_vout->p_sys->p_qdport );
 471     QTScaleMatrix( p_vout );
 472
 473     if( QTCreateSequence( p_vout ) )
 474     {
 475         msg_Err( p_vout, "unable to create sequence" );
 476         return( 1 );
 477     }
 478
 479     [o_pool release];
 480     return 0;
 481 }
 482
 483 /*****************************************************************************
 484  * QTScaleMatrix: scale matrix
 485  *****************************************************************************/
 486 static void QTScaleMatrix( vout_thread_t *p_vout )
 487 {
 488     Rect s_rect;
 489     vlc_value_t val;
 490     unsigned int i_width, i_height;
 491     Fixed factor_x, factor_y;
 492     unsigned int i_offset_x = 0;
 493     unsigned int i_offset_y = 0;
 494
 495     GetPortBounds( p_vout->p_sys->p_qdport, &s_rect );
 496
 497     i_width = s_rect.right - s_rect.left;
 498     i_height = s_rect.bottom - s_rect.top;
 499
 500     var_Get( p_vout, "macosx-stretch", &val );
 501     if( val.b_bool )
 502     {
 503         factor_x = FixDiv( Long2Fix( i_width ),
 504                            Long2Fix( p_vout->output.i_width ) );
 505         factor_y = FixDiv( Long2Fix( i_height ),
 506                            Long2Fix( p_vout->output.i_height ) );
 507
 508     }
 509     else if( i_height * p_vout->output.i_aspect < i_width * VOUT_ASPECT_FACTOR )
 510     {
 511         int i_adj_width = i_height * p_vout->output.i_aspect /
 512                           VOUT_ASPECT_FACTOR;
 513
 514         factor_x = FixDiv( Long2Fix( i_adj_width ),
 515                            Long2Fix( p_vout->output.i_width ) );
 516         factor_y = FixDiv( Long2Fix( i_height ),
 517                            Long2Fix( p_vout->output.i_height ) );
 518
 519         i_offset_x = (i_width - i_adj_width) / 2;
 520     }
 521     else
 522     {
 523         int i_adj_height = i_width * VOUT_ASPECT_FACTOR /
 524                            p_vout->output.i_aspect;
 525
 526         factor_x = FixDiv( Long2Fix( i_width ),
 527                            Long2Fix( p_vout->output.i_width ) );
 528         factor_y = FixDiv( Long2Fix( i_adj_height ),
 529                            Long2Fix( p_vout->output.i_height ) );
 530
 531         i_offset_y = (i_height - i_adj_height) / 2;
 532     }
 533
 534     SetIdentityMatrix( p_vout->p_sys->p_matrix );
 535
 536     ScaleMatrix( p_vout->p_sys->p_matrix,
 537                  factor_x, factor_y,
 538                  Long2Fix(0), Long2Fix(0) );
 539
 540     TranslateMatrix( p_vout->p_sys->p_matrix,
 541                  Long2Fix(i_offset_x), Long2Fix(i_offset_y) );
 542 }
 543
 544 /*****************************************************************************
 545  * QTCreateSequence: create a new sequence
 546  *****************************************************************************
 547  * Returns 0 on success, 1 otherwise
 548  *****************************************************************************/
 549 static int QTCreateSequence( vout_thread_t *p_vout )
 550 {
 551     OSErr err;
 552     ImageDescriptionPtr p_descr;
 553
 554     HLock( (Handle)p_vout->p_sys->h_img_descr );
 555     p_descr = *p_vout->p_sys->h_img_descr;
 556
 557     p_descr->idSize = sizeof(ImageDescription);
 558     p_descr->cType = p_vout->p_sys->i_codec;
 559     p_descr->version = 2;
 560     p_descr->revisionLevel = 0;
 561     p_descr->vendor = 'mpla';
 562     p_descr->width = p_vout->output.i_width;
 563     p_descr->height = p_vout->output.i_height;
 564     p_descr->hRes = Long2Fix(72);
 565     p_descr->vRes = Long2Fix(72);
 566     p_descr->spatialQuality = codecLosslessQuality;
 567     p_descr->frameCount = 1;
 568     p_descr->clutID = -1;
 569     p_descr->dataSize = 0;
 570     p_descr->depth = 24;
 571
 572     HUnlock( (Handle)p_vout->p_sys->h_img_descr );
 573
 574     if( ( err = DecompressSequenceBeginS(
 575                               &p_vout->p_sys->i_seq,
 576                               p_vout->p_sys->h_img_descr,
 577                               NULL,
 578                               (p_descr->width * p_descr->height * 16) / 8,
 579                               p_vout->p_sys->p_qdport,
 580                               NULL, NULL,
 581                               p_vout->p_sys->p_matrix,
 582                               srcCopy, NULL,
 583                               codecFlagUseImageBuffer,
 584                               codecLosslessQuality,
 585                               bestSpeedCodec ) ) )
 586     {
 587         msg_Err( p_vout, "DecompressSequenceBeginS failed: %d", err );
 588         return( 1 );
 589     }
 590
 591     return( 0 );
 592 }
 593
 594 /*****************************************************************************
 595  * QTDestroySequence: destroy sequence
 596  *****************************************************************************/
 597 static void QTDestroySequence( vout_thread_t *p_vout )
 598 {
 599     CDSequenceEnd( p_vout->p_sys->i_seq );
 600 }
 601
 602 /*****************************************************************************
 603  * QTNewPicture: allocate a picture
 604  *****************************************************************************
 605  * Returns 0 on success, 1 otherwise
 606  *****************************************************************************/
 607 static int QTNewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 608 {
 609     /* We know the chroma, allocate a buffer which will be used
 610      * directly by the decoder */
 611     p_pic->p_sys = malloc( sizeof( picture_sys_t ) );
 612
 613     if( p_pic->p_sys == NULL )
 614     {
 615         return( -1 );
 616     }
 617
 618     vout_InitPicture( VLC_OBJECT( p_vout), p_pic, p_vout->output.i_chroma,
 619                       p_vout->output.i_width, p_vout->output.i_height,
 620                       p_vout->output.i_aspect );
 621
 622     switch( p_vout->output.i_chroma )
 623     {
 624         case VLC_FOURCC('Y','U','Y','2'):
 625             p_pic->p_sys->i_size = p_vout->output.i_width * p_vout->output.i_height * 2;
 626
 627             /* Allocate the memory buffer */
 628             p_pic->p_data = vlc_memalign( &p_pic->p_data_orig,
 629                                           16, p_pic->p_sys->i_size );
 630
 631             p_pic->p[0].p_pixels = p_pic->p_data;
 632             p_pic->p[0].i_lines = p_vout->output.i_height;
 633             p_pic->p[0].i_visible_lines = p_vout->output.i_height;
 634             p_pic->p[0].i_pitch = p_vout->output.i_width * 2;
 635             p_pic->p[0].i_pixel_pitch = 1;
 636             p_pic->p[0].i_visible_pitch = p_vout->output.i_width * 2;
 637             p_pic->i_planes = 1;
 638
 639             p_pic->p_sys->p_data = (void *)p_pic->p[0].p_pixels;
 640
 641             break;
 642
 643     default:
 644         /* Unknown chroma, tell the guy to get lost */
 645         free( p_pic->p_sys );
 646         msg_Err( p_vout, "never heard of chroma 0x%.8x (%4.4s)",
 647                  p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma );
 648         p_pic->i_planes = 0;
 649         return( -1 );
 650     }
 651
 652     return( 0 );
 653 }
 654
 655 /*****************************************************************************
 656  * QTFreePicture: destroy a picture allocated with QTNewPicture
 657  *****************************************************************************/
 658 static void QTFreePicture( vout_thread_t *p_vout, picture_t *p_pic )
 659 {
 660     switch( p_vout->output.i_chroma )
 661     {
 662         case VLC_FOURCC('I','4','2','0'):
 663             free( p_pic->p_data_orig );
 664             break;
 665     }
 666
 667     free( p_pic->p_sys );
 668 }
 669
 670 /*****************************************************************************
 671  * VLCQTView implementation
 672  *****************************************************************************/
 673 @implementation VLCQTView
 674
 675 - (id) initWithVout:(vout_thread_t *)_p_vout
 676 {
 677     p_vout = _p_vout;
 678     return [super init];
 679 }
 680
 681 - (void)drawRect:(NSRect)rect
 682 {
 683     [[NSColor blackColor] set];
 684     NSRectFill( rect );
 685     [super drawRect: rect];
 686
 687     p_vout->i_changes |= VOUT_SIZE_CHANGE;
 688 }
 689
 690 @end