git.sesse.net Git - vlc/blob - plugins/macosx/vout_macosx.c

   1 /*****************************************************************************
   2  * vout_macosx.c: MacOS X video output plugin
   3  *****************************************************************************
   4  * Copyright (C) 2001 VideoLAN
   5  *
   6  * Authors: Colin Delacroix <colin@zoy.org>
   7  *          Eugenio Jarosiewicz <ej0@cise.ufl.edu>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 #define MODULE_NAME macosx
  25 #include "modules_inner.h"
  26
  27 /*****************************************************************************
  28  * Preamble
  29  *****************************************************************************/
  30 #include "defs.h"
  31
  32 #include <errno.h>                                                 /* ENOMEM */
  33 #include <stdlib.h>                                                /* free() */
  34 #include <string.h>                                            /* strerror() */
  35
  36 #include "config.h"
  37 #include "common.h"
  38 #include "threads.h"
  39 #include "mtime.h"
  40 #include "tests.h"
  41
  42 #include "video.h"
  43 #include "video_output.h"
  44
  45 #include "intf_msg.h"
  46
  47 #include "main.h"
  48
  49 #include "modules.h"
  50
  51 #ifndef __CARBONPREFIX__
  52     #define __CARBONPREFIX__
  53
  54     // Needed for carbonization
  55     #define TARGET_API_MAC_CARBON 1
  56
  57     // For the pascal to C or C to pascal string conversions in carbon
  58     #define OLDP2C 1
  59 #endif
  60
  61 #include <Carbon/Carbon.h>
  62
  63 // Initial Window Constants
  64 enum
  65 {
  66     kWindowOffset = 100
  67 };
  68
  69 // where is the off screen
  70 enum
  71 {
  72     kNoWhere = 0,
  73     kInVRAM,
  74     kInAGP,
  75     kInSystem
  76 };
  77
  78 /*****************************************************************************
  79  * vout_sys_t: MacOS X video output method descriptor
  80  *****************************************************************************
  81  * This structure is part of the video output thread descriptor.
  82  * It describes the MacOS X specific properties of an output thread.
  83  *****************************************************************************/
  84 typedef struct vout_sys_s
  85 {
  86     /* MacOS X video memory */
  87     byte_t *                    p_video;                      /* base adress */
  88     size_t                      i_page_size;                    /* page size */
  89
  90     Rect        wrect;
  91     WindowRef   p_window;
  92     short gwLocOffscreen;
  93     GWorldPtr p_gw[ 2 ];
  94     Boolean gNewNewGWorld;      /* can we allocate in VRAm or AGP memory ? */
  95
  96     // Boolean gDone;
  97     // SInt32 gSleepTime;
  98
  99     GDHandle  theGDList;
 100     Ptr                         theBase;
 101     int                         theRow;
 102     int                         theDepth;
 103 } vout_sys_t;
 104
 105 /*****************************************************************************
 106  * Local prototypes
 107  *****************************************************************************/
 108 static int  vout_Probe     ( probedata_t *p_data );
 109 static int  vout_Create    ( struct vout_thread_s * );
 110 static int  vout_Init      ( struct vout_thread_s * );
 111 static void vout_End       ( struct vout_thread_s * );
 112 static void vout_Destroy   ( struct vout_thread_s * );
 113 static int  vout_Manage    ( struct vout_thread_s * );
 114 static void vout_Display   ( struct vout_thread_s * );
 115
 116 /* OS specific */
 117
 118 static int CreateDisplay        ( struct vout_thread_s * );
 119 static int MakeWindow           ( struct vout_thread_s * );
 120 static int AllocBuffer          ( struct vout_thread_s * , short index );
 121
 122 void BlitToWindow               ( struct vout_thread_s * , short index );
 123 GDHandle GetWindowDevice        ( struct vout_thread_s * );
 124 void FillOffscreen              ( struct vout_thread_s * , short index);
 125
 126 void FindBestMemoryLocation( struct vout_thread_s * );
 127
 128 /*****************************************************************************
 129  * Functions exported as capabilities. They are declared as static so that
 130  * we don't pollute the namespace too much.
 131  *****************************************************************************/
 132 void _M( vout_getfunctions )( function_list_t * p_function_list )
 133 {
 134     p_function_list->pf_probe = vout_Probe;
 135     p_function_list->functions.vout.pf_create     = vout_Create;
 136     p_function_list->functions.vout.pf_init       = vout_Init;
 137     p_function_list->functions.vout.pf_end        = vout_End;
 138     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 139     p_function_list->functions.vout.pf_manage     = vout_Manage;
 140     p_function_list->functions.vout.pf_display    = vout_Display;
 141     p_function_list->functions.vout.pf_setpalette = NULL;
 142 }
 143
 144 /*****************************************************************************
 145  * intf_Probe: return a score
 146  *****************************************************************************/
 147 static int vout_Probe( probedata_t *p_data )
 148 {
 149     if( TestMethod( VOUT_METHOD_VAR, "macosx" ) )
 150     {
 151         return( 999 );
 152     }
 153
 154     return( 100 );
 155 }
 156
 157 /*****************************************************************************
 158  * vout_Create: allocates MacOS X video thread output method
 159  *****************************************************************************
 160  * This function allocates and initializes a MacOS X vout method.
 161  *****************************************************************************/
 162 static int vout_Create( vout_thread_t *p_vout )
 163 {
 164     //intf_ErrMsg( "vout_Create()" );
 165
 166     /* Allocate structure */
 167     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 168     if( p_vout->p_sys == NULL )
 169     {
 170         intf_ErrMsg( "error: %s", strerror( ENOMEM ) );
 171         return( 1 );
 172     }
 173
 174     p_vout->p_sys->gwLocOffscreen = kNoWhere;
 175     p_vout->p_sys->p_window       = NULL;
 176     p_vout->p_sys->p_gw[ 0 ]      = NULL;
 177     p_vout->p_sys->p_gw[ 1 ]      = NULL;
 178     p_vout->p_sys->i_page_size    = p_vout->i_width * p_vout->i_height
 179                                   * p_vout->i_bytes_per_pixel;
 180
 181     if ( CreateDisplay( p_vout ) )
 182     {
 183         intf_ErrMsg( "vout error: can't open display" );
 184         free( p_vout->p_sys );
 185         return( 1 );
 186     }
 187
 188 #if 0
 189     intf_ErrMsg( "vout p_vout->i_width %d" , p_vout->i_width);
 190     intf_ErrMsg( "vout p_vout->i_height %d" , p_vout->i_height);
 191     intf_ErrMsg( "vout p_vout->i_bytes_per_pixel %d" , p_vout->i_bytes_per_pixel);
 192     intf_ErrMsg( "vout p_vout->i_screen_depth %d" , p_vout->i_screen_depth);
 193     intf_ErrMsg( "vout p_vout->p_sys->i_page_size %d" , p_vout->p_sys->i_page_size);
 194 #endif
 195
 196 #if 0
 197     /* Map two framebuffers a the very beginning of the fb */
 198     p_vout->p_sys->p_video = malloc( 2 * p_vout->p_sys->i_page_size );
 199     if( p_vout->p_sys->p_video == NULL )
 200     {
 201         intf_ErrMsg( "vout error: can't map video memory (%s)",
 202                      strerror(errno) );
 203         free( p_vout->p_sys );
 204         return( 1 );
 205     }
 206     /* Set and initialize buffers */
 207     vout_SetBuffers( p_vout, p_vout->p_sys->p_video,
 208                     p_vout->p_sys->p_video + p_vout->p_sys->i_page_size );
 209 #endif
 210
 211     return( 0 );
 212 }
 213
 214 /*****************************************************************************
 215  * Find the best memory (AGP, VRAM, system) location
 216  *****************************************************************************/
 217 void FindBestMemoryLocation( vout_thread_t *p_vout )
 218 {
 219     long versionSystem;
 220
 221     Gestalt( gestaltSystemVersion, &versionSystem );
 222     if ( 0x00000900 <= ( versionSystem & 0x00000FF00  ) )
 223     {
 224         intf_ErrMsg( "FindBestMemoryLocation : gNewNewGWorld = true" );
 225         p_vout->p_sys->gNewNewGWorld = true;
 226     }
 227     else
 228     {
 229         // now it is tricky
 230         // we will try to allocate in VRAM and find out where the allocation really ended up.
 231         GWorldPtr pgwTest = NULL;
 232         Rect rectTest = {0, 0, 10, 10};
 233         short wPixDepth =
 234             (**(GetPortPixMap( GetWindowPort( p_vout->p_sys->p_window ) ))).pixelSize;
 235         GDHandle hgdWindow = GetWindowDevice( p_vout );
 236
 237         intf_ErrMsg( "FindBestMemoryLocation : gNewNewGWorld = false !" );
 238 #if 0
 239 //EJ added
 240         p_vout->i_screen_depth = wPixDepth;
 241         p_vout->i_bytes_per_pixel = wPixDepth;
 242         p_vout->i_bytes_per_line   = p_vout->i_width * p_vout->i_bytes_per_pixel;
 243         p_vout->p_sys->i_page_size = p_vout->i_width * p_vout->i_height * p_vout->i_bytes_per_pixel;
 244 //p_vout->i_bytes_per_line = (**(**hgdWindow).gdPMap).rowBytes & 0x3FFF ;
 245 #endif
 246         if(    ( noErr == NewGWorld( &pgwTest, wPixDepth, &rectTest, NULL, hgdWindow,
 247                                      noNewDevice | useDistantHdwrMem ) )
 248             && ( pgwTest ) )
 249         {
 250             p_vout->p_sys->gNewNewGWorld = true;
 251         }
 252
 253         if( pgwTest )
 254         {
 255             DisposeGWorld( pgwTest );
 256         }
 257     }
 258 }
 259
 260 /*****************************************************************************
 261  * CreateDisplay: setup display params...
 262  *****************************************************************************/
 263 static int CreateDisplay( vout_thread_t *p_vout )
 264 {
 265     PixMapHandle hPixmap0, hPixmap1;
 266     void * hPixmapBaseAddr0, * hPixmapBaseAddr1;
 267
 268     //intf_ErrMsg( "CreateDisplay()" );
 269
 270     if( MakeWindow( p_vout ) )
 271     {
 272         intf_ErrMsg( "vout error: can't open window display" );
 273         return( 1 );
 274     }
 275
 276     // FindBestMemoryLocation( p_vout );
 277
 278     //try to allocate @ best location, will eventaully trickle down to worst
 279     p_vout->p_sys->gwLocOffscreen = kInVRAM;
 280     if( AllocBuffer( p_vout, 0 ) || AllocBuffer( p_vout, 1 ) )
 281     {
 282         intf_ErrMsg( "vout error: can't alloc offscreen buffers" );
 283         return( 1 );
 284     }
 285
 286     hPixmap0 = GetGWorldPixMap( p_vout->p_sys->p_gw[0] );
 287 //FIXME BIGTIME - in SDL they just lock this down until the end...KLUDGE
 288 //but alas sounds good to me to try it.
 289 //well fuck a duck it works.
 290     LockPixels(hPixmap0);
 291     hPixmap1 = GetGWorldPixMap( p_vout->p_sys->p_gw[1] );
 292     LockPixels(hPixmap1);
 293
 294     //FIXME hopefully this is the same for all Gworlds & window since they are the same size
 295     p_vout->i_bytes_per_line = (**hPixmap0).rowBytes & 0x3FFF;
 296
 297     if ( (hPixmap0 == NULL) || (hPixmap1 == NULL) )
 298     {
 299         intf_ErrMsg( "vout error: pixmap problem");
 300         UnlockPixels(hPixmap0);
 301         UnlockPixels(hPixmap1);
 302         return( 1 );
 303     }
 304
 305     hPixmapBaseAddr0 = GetPixBaseAddr( hPixmap0 );
 306     hPixmapBaseAddr1 = GetPixBaseAddr( hPixmap1 );
 307     if ( (hPixmapBaseAddr0 == NULL) || (hPixmapBaseAddr1 == NULL) )
 308     {
 309         intf_ErrMsg( "vout error: pixmap base addr problem");
 310         return( 1 );
 311     }
 312
 313 //FIXME TODO - if I ever dispose of the Gworlds and recreate them, i'll have a new address
 314 //and I'll need to tell vout about them...  dunno what problems vout might have if we just updateGworld
 315     vout_SetBuffers( p_vout, hPixmapBaseAddr0, hPixmapBaseAddr1 );
 316
 317     return 0;
 318 }
 319
 320 /*****************************************************************************
 321  * MakeWindow: open and set-up a Mac OS main window
 322  *****************************************************************************/
 323 static int MakeWindow( vout_thread_t *p_vout )
 324 {
 325     int left = 0;
 326     int top = 0;
 327     int bottom = p_vout->i_height;
 328     int right = p_vout->i_width;
 329
 330     WindowAttributes windowAttr = kWindowStandardDocumentAttributes |
 331                                     kWindowStandardHandlerAttribute |
 332                                     kWindowInWindowMenuAttribute;
 333
 334     SetRect( &p_vout->p_sys->wrect, left, top, right, bottom );
 335     OffsetRect( &p_vout->p_sys->wrect, kWindowOffset, kWindowOffset );
 336
 337     CreateNewWindow( kDocumentWindowClass, windowAttr, &p_vout->p_sys->wrect, &p_vout->p_sys->p_window );
 338     if ( p_vout->p_sys->p_window == nil )
 339     {
 340         return( 1 );
 341     }
 342
 343     InstallStandardEventHandler(GetWindowEventTarget(p_vout->p_sys->p_window));
 344     SetPort( GetWindowPort( p_vout->p_sys->p_window ) );
 345     SetWindowTitleWithCFString( p_vout->p_sys->p_window, CFSTR("VLC") );
 346 //    ShowWindow( p_vout->p_sys->p_window );
 347     TransitionWindow( p_vout->p_sys->p_window, kWindowZoomTransitionEffect, kWindowShowTransitionAction, NULL);
 348     BringToFront(  p_vout->p_sys->p_window );
 349
 350 {
 351     short wPixDepth = (**(GetPortPixMap( GetWindowPort( p_vout->p_sys->p_window ) ))).pixelSize;
 352     p_vout->i_screen_depth = wPixDepth;
 353     p_vout->i_bytes_per_pixel = p_vout->i_screen_depth / 8;
 354     p_vout->i_bytes_per_line   = p_vout->i_width * p_vout->i_bytes_per_pixel;
 355     p_vout->p_sys->i_page_size = p_vout->i_width * p_vout->i_height * p_vout->i_bytes_per_pixel;
 356
 357 //EJ added
 358 #if 1
 359 p_vout->i_bytes_per_line = (**(**GetWindowDevice( p_vout )).gdPMap).rowBytes & 0x3FFF ;
 360
 361     switch ( p_vout->i_screen_depth )
 362     {
 363         case 32:
 364         case 24:
 365             p_vout->i_red_mask =   0xff0000;
 366             p_vout->i_green_mask = 0xff00;
 367             p_vout->i_blue_mask =  0xff;
 368             break;
 369         case 16:
 370         case 15:
 371             p_vout->i_red_mask =   0x00007c00;
 372             p_vout->i_green_mask = 0x000003e0;
 373             p_vout->i_blue_mask =  0x0000001f;
 374             break;
 375         default:
 376             break;
 377     }
 378 #endif
 379
 380 //EJ - not sure about these...
 381 #if 0
 382     p_vout->i_red_lshift = 0x10;
 383     p_vout->i_red_rshift = 0x0;
 384     p_vout->i_green_lshift = 0x8;
 385     p_vout->i_green_rshift = 0x0;
 386     p_vout->i_blue_lshift = 0x0;
 387     p_vout->i_blue_rshift = 0x0;
 388
 389     p_vout->i_white_pixel = 0xffffff;
 390     p_vout->i_black_pixel = 0x0;
 391     p_vout->i_gray_pixel = 0x808080;
 392     p_vout->i_blue_pixel = 0x32;
 393 #endif
 394 }
 395
 396     return( 0 );
 397 }
 398
 399 /*****************************************************************************
 400  * AllocBuffer: forces offscreen allocation (if different than current) in memory type specified
 401  *****************************************************************************/
 402 static int AllocBuffer ( vout_thread_t *p_vout, short index )
 403 {
 404     Rect bounds;
 405     GDHandle hgdWindow = GetWindowDevice( p_vout );
 406
 407     switch ( p_vout->p_sys->gwLocOffscreen )
 408     {
 409         case kInVRAM:
 410             if ( noErr == NewGWorld( &p_vout->p_sys->p_gw[index], p_vout->i_screen_depth,
 411                 GetPortBounds( GetWindowPort( p_vout->p_sys->p_window ), &bounds ), NULL,
 412                 hgdWindow, noNewDevice | useDistantHdwrMem ) )
 413             {
 414                 intf_ErrMsg( "Allocate off screen image in VRAM" );
 415                 break;
 416             }
 417             intf_ErrMsg( "Unable to allocate off screen image in VRAM, trying next best AGP" );
 418             p_vout->p_sys->gwLocOffscreen = kInAGP;
 419         case kInAGP:
 420             if (noErr == NewGWorld( &p_vout->p_sys->p_gw[index], p_vout->i_screen_depth,
 421                 GetPortBounds( GetWindowPort( p_vout->p_sys->p_window ), &bounds ), NULL,
 422                 hgdWindow, noNewDevice | useLocalHdwrMem ) )
 423             {
 424                 intf_ErrMsg( "Allocate off screen image in AGP" );
 425                 break;
 426             }
 427             intf_ErrMsg( "Unable to allocate off screen image in AGP, trying next best System" );
 428             p_vout->p_sys->gwLocOffscreen = kInSystem;
 429         case kInSystem:
 430         default:
 431             if ( noErr == NewGWorld( &p_vout->p_sys->p_gw[index], p_vout->i_screen_depth,
 432                 GetPortBounds( GetWindowPort( p_vout->p_sys->p_window ), &bounds ), NULL,
 433                 hgdWindow, noNewDevice | keepLocal) )
 434             {
 435                 intf_ErrMsg( "Allocate off screen image in System" );
 436                 break;
 437             }
 438             intf_ErrMsg( "Unable to allocate off screen image in System, no options left - failing" );
 439             p_vout->p_sys->gwLocOffscreen = kNoWhere;
 440             return( 1 ); // nothing was allocated
 441     }
 442     return( 0 );
 443 }
 444
 445 /*****************************************************************************
 446  * vout_Init: initialize video thread output method
 447  *****************************************************************************/
 448 static int vout_Init( vout_thread_t *p_vout )
 449 {
 450     //intf_ErrMsg( "vout_Init()" );
 451     return( 0 );
 452 }
 453
 454 /*****************************************************************************
 455  * vout_End: terminate video thread output method
 456  *****************************************************************************/
 457 static void vout_End( vout_thread_t *p_vout )
 458 {
 459     //intf_ErrMsg( "vout_End()" );
 460     ;
 461 }
 462
 463 /*****************************************************************************
 464  * vout_Destroy: destroy video thread output method
 465  *****************************************************************************/
 466 static void vout_Destroy( vout_thread_t *p_vout )
 467 {
 468     //intf_ErrMsg( "vout_Destroy()" );
 469
 470 //FIXME KLUDGE to lock pixels
 471 #if 1
 472 {
 473     PixMapHandle hPixmap0, hPixmap1;
 474     hPixmap0 = GetGWorldPixMap( p_vout->p_sys->p_gw[0] );
 475     hPixmap1 = GetGWorldPixMap( p_vout->p_sys->p_gw[1] );
 476     UnlockPixels(hPixmap0);
 477     UnlockPixels(hPixmap1);
 478 }
 479 #endif
 480
 481 #if 1
 482     if ( p_vout->p_sys->p_gw[0] )
 483     {
 484         DisposeGWorld( p_vout->p_sys->p_gw[0] );
 485     }
 486     if ( p_vout->p_sys->p_gw[1] )
 487     {
 488         DisposeGWorld( p_vout->p_sys->p_gw[1] );
 489     }
 490     if ( p_vout->p_sys->p_window )
 491     {
 492         DisposeWindow( p_vout->p_sys->p_window );
 493     }
 494 #endif
 495     free( p_vout->p_sys->p_video );
 496     free( p_vout->p_sys );
 497 }
 498
 499 /*****************************************************************************
 500  * vout_Manage: handle events
 501  *****************************************************************************
 502  * This function should be called regularly by video output thread. It manages
 503  * console events. It returns a non null value on error.
 504  *****************************************************************************/
 505 static int vout_Manage( vout_thread_t *p_vout )
 506 {
 507 //    intf_ErrMsg( "vout_Manage()" );
 508     return( 0 );
 509 }
 510
 511 /*****************************************************************************
 512  * vout_Display: displays previously rendered output
 513  *****************************************************************************
 514  * This function send the currently rendered image to image, waits until
 515  * it is displayed and switch the two rendering buffers, preparing next frame.
 516  *****************************************************************************/
 517 static void vout_Display( vout_thread_t *p_vout )
 518 {
 519 //    intf_ErrMsg( "vout_Display()" );
 520
 521     BlitToWindow ( p_vout, p_vout->i_buffer_index );
 522 }
 523
 524
 525 /*****************************************************************************
 526  * flushQD: flushes buffered window area
 527   *****************************************************************************/
 528 void flushQD( vout_thread_t *p_vout )
 529 {
 530     CGrafPtr thePort;
 531
 532     //intf_ErrMsg( "flushQD()" );
 533
 534     thePort = GetWindowPort( p_vout->p_sys->p_window );
 535
 536     /* flush the entire port */
 537     if (QDIsPortBuffered(thePort))
 538         QDFlushPortBuffer(thePort, NULL);
 539
 540 #if 0
 541     /* flush part of the port */
 542     if (QDIsPortBuffered(thePort)) {
 543         RgnHandle theRgn;
 544         theRgn = NewRgn();
 545             /* local port coordinates */
 546         SetRectRgn(theRgn, 10, 10, 100, 30);
 547         QDFlushPortBuffer(thePort, theRgn);
 548         DisposeRgn(theRgn);
 549     }
 550 #endif
 551
 552 }
 553
 554 /*****************************************************************************
 555  * BlitToWindow: checks offscreen and blits it to the front
 556   *****************************************************************************/
 557
 558 void BlitToWindow( vout_thread_t *p_vout, short index )
 559 {
 560     Rect rectDest, rectSource;
 561     GrafPtr pCGrafSave, windowPort = GetWindowPort( p_vout->p_sys->p_window );
 562
 563     //intf_ErrMsg( "BlitToWindow() for %d", index );
 564
 565     GetPortBounds( p_vout->p_sys->p_gw[index], &rectSource );
 566     GetPortBounds( windowPort, &rectDest );
 567
 568     GetPort ( &pCGrafSave );
 569     SetPortWindowPort( p_vout->p_sys->p_window );
 570 //FIXME have global lock - kinda bad but oh well
 571 //    if ( LockPixels( GetGWorldPixMap( p_vout->p_sys->p_gw[index] ) ) )
 572 //    {
 573         CopyBits( GetPortBitMapForCopyBits( p_vout->p_sys->p_gw[index] ),
 574                     GetPortBitMapForCopyBits( GetWindowPort( p_vout->p_sys->p_window ) ),
 575                     &rectSource, &rectDest, srcCopy, NULL);
 576 //        UnlockPixels( GetGWorldPixMap( p_vout->p_sys->p_gw[index] ) );
 577 //EJ
 578         //flushQD( p_vout );
 579 /*
 580     }
 581     else
 582     {
 583         intf_ErrMsg( "error: Could not LockPixels" );
 584     }
 585 */
 586     SetPort ( pCGrafSave );
 587 }
 588
 589
 590 /*****************************************************************************
 591  * GetWindowDevice: returns GDHandle that window resides on (most of it anyway)
 592  *****************************************************************************/
 593 GDHandle GetWindowDevice( vout_thread_t *p_vout )
 594 {
 595     GrafPtr pgpSave;
 596     Rect rectWind, rectSect;
 597     long greatestArea, sectArea;
 598     GDHandle hgdNthDevice, hgdZoomOnThisDevice = NULL;
 599
 600     //intf_ErrMsg( "GetWindowDevice()" );
 601
 602     GetPort( &pgpSave );
 603     SetPortWindowPort( p_vout->p_sys->p_window );
 604     GetPortBounds( GetWindowPort( p_vout->p_sys->p_window ), &rectWind );
 605     LocalToGlobal( ( Point* ) &rectWind.top );
 606     LocalToGlobal( ( Point* ) &rectWind.bottom );
 607     hgdNthDevice = GetDeviceList();
 608     greatestArea = 0;
 609     // check window against all gdRects in gDevice list and remember
 610     //  which gdRect contains largest area of window}
 611     while ( hgdNthDevice )
 612     {
 613         if ( TestDeviceAttribute( hgdNthDevice, screenDevice ) )
 614         {
 615             if ( TestDeviceAttribute( hgdNthDevice, screenActive ) )
 616             {
 617                 // The SectRect routine calculates the intersection
 618                 //  of the window rectangle and this gDevice
 619                 //  rectangle and returns TRUE if the rectangles intersect,
 620                 //  FALSE if they don't.
 621                 SectRect( &rectWind, &( **hgdNthDevice ).gdRect, &rectSect );
 622                 // determine which screen holds greatest window area
 623                 //  first, calculate area of rectangle on current device
 624                 sectArea = ( long )( rectSect.right - rectSect.left ) * ( rectSect.bottom - rectSect.top );
 625                 if ( sectArea > greatestArea )
 626                 {
 627                     greatestArea = sectArea;    // set greatest area so far
 628                     hgdZoomOnThisDevice = hgdNthDevice; // set zoom device
 629                 }
 630                 hgdNthDevice = GetNextDevice( hgdNthDevice );
 631             }
 632         }
 633     }   // of WHILE
 634     SetPort( pgpSave );
 635     return hgdZoomOnThisDevice;
 636 }
 637
 638 /*****************************************************************************
 639  * FillOffScreen: fills offscreen buffer with random bright color
 640  *****************************************************************************/
 641
 642 void FillOffscreen( vout_thread_t *p_vout, short index )
 643 {
 644     static RGBColor rgbColorOld;
 645     GDHandle hGDSave;
 646     CGrafPtr pCGrafSave;
 647     Rect rectSource;
 648     RGBColor rgbColor;
 649
 650     //intf_ErrMsg( "FillOffscreen" );
 651
 652     GetPortBounds( p_vout->p_sys->p_gw[index], &rectSource );
 653
 654     do
 655         rgbColor.red = ( Random () + 32767) / 2 + 32767;
 656     while ( abs ( rgbColor.red - rgbColorOld.red ) <  3000 );
 657     do
 658         rgbColor.green = (Random () + 32767) / 2 + 32767;
 659     while ( abs ( rgbColor.green - rgbColorOld.green ) <  3000);
 660     do
 661         rgbColor.blue = (Random () + 32767) / 2 + 32767;
 662     while ( abs ( rgbColor.blue - rgbColorOld.blue ) <  3000);
 663
 664     rgbColorOld = rgbColor;
 665
 666     GetGWorld( &pCGrafSave, &hGDSave );
 667     SetGWorld( p_vout->p_sys->p_gw[index], NULL );
 668 //FIXME have global lock - kinda bad but oh well
 669 //    if ( LockPixels( GetGWorldPixMap( p_vout->p_sys->p_gw[index] ) ) )
 670 //    {
 671         // draw some background
 672         EraseRect( &rectSource );
 673         RGBForeColor( &rgbColor );
 674         PaintRect( &rectSource );
 675 //        UnlockPixels( GetGWorldPixMap( p_vout->p_sys->p_gw[index] ) );
 676 //    }
 677     SetGWorld( pCGrafSave, hGDSave );
 678 }