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

   1 /*****************************************************************************
   2  * voutgl.m: MacOS X OpenGL provider
   3  *****************************************************************************
   4  * Copyright (C) 2001-2004 the VideoLAN team
   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  *          Benjamin Pracht <bigben at videolan dot org>
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  27  *****************************************************************************/
  28
  29 /*****************************************************************************
  30  * Preamble
  31  *****************************************************************************/
  32 #include <errno.h>                                                 /* ENOMEM */
  33 #include <stdlib.h>                                                /* free() */
  34 #include <string.h>                                            /* strerror() */
  35
  36 #include <vlc_keys.h>
  37
  38 #include "intf.h"
  39 #include "vout.h"
  40
  41 #include <OpenGL/OpenGL.h>
  42 #include <OpenGL/gl.h>
  43
  44 #include <AGL/agl.h>
  45
  46 /*****************************************************************************
  47  * VLCView interface
  48  *****************************************************************************/
  49 @interface VLCGLView : NSOpenGLView
  50 {
  51     vout_thread_t * p_vout;
  52 }
  53
  54 - (id) initWithVout: (vout_thread_t *) p_vout;
  55 @end
  56
  57 struct vout_sys_t
  58 {
  59     NSAutoreleasePool * o_pool;
  60     VLCGLView         * o_glview;
  61     VLCVoutView       * o_vout_view;
  62     vlc_bool_t          b_saved_frame;
  63     NSRect              s_frame;
  64     vlc_bool_t          b_got_frame;
  65     vlc_mutex_t         lock;
  66     /* Mozilla plugin-related variables */
  67     vlc_bool_t          b_embedded;
  68     AGLContext          agl_ctx;
  69     AGLDrawable         agl_drawable;
  70     int                 i_offx, i_offy;
  71     int                 i_width, i_height;
  72 };
  73
  74 /*****************************************************************************
  75  * Local prototypes
  76  *****************************************************************************/
  77
  78 static int  Init   ( vout_thread_t * p_vout );
  79 static void End    ( vout_thread_t * p_vout );
  80 static int  Manage ( vout_thread_t * p_vout );
  81 static int  Control( vout_thread_t *, int, va_list );
  82 static void Swap   ( vout_thread_t * p_vout );
  83 static int  Lock   ( vout_thread_t * p_vout );
  84 static void Unlock ( vout_thread_t * p_vout );
  85
  86 static int  aglInit   ( vout_thread_t * p_vout );
  87 static void aglEnd    ( vout_thread_t * p_vout );
  88 static int  aglManage ( vout_thread_t * p_vout );
  89 static void aglSwap   ( vout_thread_t * p_vout );
  90
  91 static int DrawableRedraw( vlc_object_t *p_this, const char *psz_name,
  92     vlc_value_t oval, vlc_value_t nval, void *param);
  93
  94 int E_(OpenVideoGL)  ( vlc_object_t * p_this )
  95 {
  96     vout_thread_t * p_vout = (vout_thread_t *) p_this;
  97     vlc_value_t value_drawable;
  98
  99     if( !CGDisplayUsesOpenGLAcceleration( kCGDirectMainDisplay ) )
 100     {
 101         msg_Warn( p_vout, "no OpenGL hardware acceleration found. "
 102                           "Video display will be slow" );
 103         return( 1 );
 104     }
 105     msg_Dbg( p_vout, "display is Quartz Extreme accelerated" );
 106
 107     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 108     if( p_vout->p_sys == NULL )
 109     {
 110         msg_Err( p_vout, "out of memory" );
 111         return( 1 );
 112     }
 113
 114     memset( p_vout->p_sys, 0, sizeof( vout_sys_t ) );
 115
 116     vlc_mutex_init( p_vout, &p_vout->p_sys->lock );
 117
 118     var_Get( p_vout->p_vlc, "drawable", &value_drawable );
 119     if( value_drawable.i_int != 0 )
 120     {
 121         static const GLint ATTRIBUTES[] = {
 122             AGL_WINDOW,
 123             AGL_RGBA,
 124             AGL_NO_RECOVERY,
 125             AGL_ACCELERATED,
 126             AGL_DOUBLEBUFFER,
 127             AGL_RED_SIZE,   8,
 128             AGL_GREEN_SIZE, 8,
 129             AGL_BLUE_SIZE,  8,
 130             AGL_ALPHA_SIZE, 8,
 131             AGL_DEPTH_SIZE, 24,
 132             AGL_NONE };
 133
 134         AGLDevice screen;
 135         AGLPixelFormat pixFormat;
 136
 137         p_vout->p_sys->b_embedded = VLC_TRUE;
 138
 139         screen = GetGWorldDevice((CGrafPtr)value_drawable.i_int);
 140         if( NULL == screen )
 141         {
 142             msg_Err( p_vout, "can't find screen device for drawable" );
 143             return VLC_EGENERIC;
 144         }
 145
 146         pixFormat = aglChoosePixelFormat(&screen, 1, ATTRIBUTES);
 147         if( NULL == pixFormat )
 148         {
 149             msg_Err( p_vout, "no screen renderer available for required attributes." );
 150             return VLC_EGENERIC;
 151         }
 152
 153         p_vout->p_sys->agl_ctx = aglCreateContext(pixFormat, NULL);
 154         aglDestroyPixelFormat(pixFormat);
 155         if( NULL == p_vout->p_sys->agl_ctx )
 156         {
 157             msg_Err( p_vout, "cannot create AGL context." );
 158             return VLC_EGENERIC;
 159         }
 160         else {
 161             // tell opengl to sync buffer swap with vertical retrace
 162             GLint param = 1;
 163             aglSetInteger(p_vout->p_sys->agl_ctx, AGL_SWAP_INTERVAL, &param);
 164             aglEnable(p_vout->p_sys->agl_ctx, AGL_SWAP_INTERVAL);
 165         }
 166
 167         p_vout->pf_init             = aglInit;
 168         p_vout->pf_end              = aglEnd;
 169         p_vout->pf_manage           = aglManage;
 170         p_vout->pf_control          = NULL;
 171         p_vout->pf_swap             = aglSwap;
 172         p_vout->pf_lock             = Lock;
 173         p_vout->pf_unlock           = Unlock;
 174     }
 175     else
 176     {
 177         p_vout->p_sys->b_embedded = VLC_FALSE;
 178
 179         p_vout->p_sys->o_pool = [[NSAutoreleasePool alloc] init];
 180
 181         /* Create the GL view */
 182         p_vout->p_sys->o_glview = [[VLCGLView alloc] initWithVout: p_vout];
 183         [p_vout->p_sys->o_glview autorelease];
 184
 185         /* Spawn the window */
 186
 187         if( !(p_vout->p_sys->o_vout_view = [VLCVoutView getVoutView: p_vout
 188                         subView: p_vout->p_sys->o_glview frame: nil]) )
 189         {
 190             return VLC_EGENERIC;
 191         }
 192         p_vout->pf_init   = Init;
 193         p_vout->pf_end    = End;
 194         p_vout->pf_manage = Manage;
 195         p_vout->pf_control= Control;
 196         p_vout->pf_swap   = Swap;
 197         p_vout->pf_lock   = Lock;
 198         p_vout->pf_unlock = Unlock;
 199     }
 200     p_vout->p_sys->b_got_frame = VLC_FALSE;
 201
 202     return VLC_SUCCESS;
 203 }
 204
 205 void E_(CloseVideoGL) ( vlc_object_t * p_this )
 206 {
 207     vout_thread_t * p_vout = (vout_thread_t *) p_this;
 208     if( p_vout->p_sys->b_embedded )
 209     {
 210         var_DelCallback(p_vout->p_vlc, "drawableredraw", DrawableRedraw, p_vout);
 211         aglDestroyContext(p_vout->p_sys->agl_ctx);
 212     }
 213     else
 214     {
 215         NSAutoreleasePool *o_pool = [[NSAutoreleasePool alloc] init];
 216
 217         /* Close the window */
 218         [p_vout->p_sys->o_vout_view closeVout];
 219
 220         [o_pool release];
 221     }
 222     /* Clean up */
 223     vlc_mutex_destroy( &p_vout->p_sys->lock );
 224     free( p_vout->p_sys );
 225 }
 226
 227 static int Init( vout_thread_t * p_vout )
 228 {
 229     [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
 230     return VLC_SUCCESS;
 231 }
 232
 233 static void End( vout_thread_t * p_vout )
 234 {
 235     [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
 236 }
 237
 238 static int Manage( vout_thread_t * p_vout )
 239 {
 240     if( p_vout->i_changes & VOUT_ASPECT_CHANGE )
 241     {
 242         [p_vout->p_sys->o_glview reshape];
 243         p_vout->i_changes &= ~VOUT_ASPECT_CHANGE;
 244     }
 245     if( p_vout->i_changes & VOUT_CROP_CHANGE )
 246     {
 247         [p_vout->p_sys->o_glview reshape];
 248         p_vout->i_changes &= ~VOUT_CROP_CHANGE;
 249     }
 250
 251     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 252     {
 253         NSAutoreleasePool *o_pool = [[NSAutoreleasePool alloc] init];
 254
 255         if( !p_vout->b_fullscreen )
 256         {
 257             /* Save window size and position */
 258             p_vout->p_sys->s_frame.size =
 259                 [p_vout->p_sys->o_vout_view frame].size;
 260             p_vout->p_sys->s_frame.origin =
 261                 [[p_vout->p_sys->o_vout_view getWindow ]frame].origin;
 262             p_vout->p_sys->b_saved_frame = VLC_TRUE;
 263         }
 264         [p_vout->p_sys->o_vout_view closeVout];
 265
 266         p_vout->b_fullscreen = !p_vout->b_fullscreen;
 267
 268 #define o_glview p_vout->p_sys->o_glview
 269         o_glview = [[VLCGLView alloc] initWithVout: p_vout];
 270         [o_glview autorelease];
 271
 272         if( p_vout->p_sys->b_saved_frame )
 273         {
 274             p_vout->p_sys->o_vout_view = [VLCVoutView getVoutView: p_vout
 275                         subView: o_glview
 276                         frame: &p_vout->p_sys->s_frame];
 277         }
 278         else
 279         {
 280             p_vout->p_sys->o_vout_view = [VLCVoutView getVoutView: p_vout
 281                         subView: o_glview frame: nil];
 282
 283         }
 284
 285         [[o_glview openGLContext] makeCurrentContext];
 286 #undef o_glview
 287
 288         [o_pool release];
 289
 290         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 291     }
 292
 293     [p_vout->p_sys->o_vout_view manage];
 294     return VLC_SUCCESS;
 295 }
 296
 297 /*****************************************************************************
 298  * Control: control facility for the vout
 299  *****************************************************************************/
 300 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
 301 {
 302     vlc_bool_t b_arg;
 303
 304     switch( i_query )
 305     {
 306         case VOUT_SET_STAY_ON_TOP:
 307             b_arg = va_arg( args, vlc_bool_t );
 308             [p_vout->p_sys->o_vout_view setOnTop: b_arg];
 309             return VLC_SUCCESS;
 310
 311         case VOUT_CLOSE:
 312         case VOUT_REPARENT:
 313         default:
 314             return vout_vaControlDefault( p_vout, i_query, args );
 315     }
 316 }
 317
 318 static void Swap( vout_thread_t * p_vout )
 319 {
 320     p_vout->p_sys->b_got_frame = VLC_TRUE;
 321     [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
 322     glFlush();
 323 }
 324
 325 static int Lock( vout_thread_t * p_vout )
 326 {
 327     vlc_mutex_lock( &p_vout->p_sys->lock );
 328     return 0;
 329 }
 330
 331 static void Unlock( vout_thread_t * p_vout )
 332 {
 333     vlc_mutex_unlock( &p_vout->p_sys->lock );
 334 }
 335
 336 /*****************************************************************************
 337  * VLCGLView implementation
 338  *****************************************************************************/
 339 @implementation VLCGLView
 340
 341 - (id) initWithVout: (vout_thread_t *) vout
 342 {
 343     p_vout = vout;
 344
 345     NSOpenGLPixelFormatAttribute attribs[] =
 346     {
 347         NSOpenGLPFAAccelerated,
 348         NSOpenGLPFANoRecovery,
 349         NSOpenGLPFAColorSize, 24,
 350         NSOpenGLPFAAlphaSize, 8,
 351         NSOpenGLPFADepthSize, 24,
 352         NSOpenGLPFAWindow,
 353         0
 354     };
 355
 356     NSOpenGLPixelFormat * fmt = [[NSOpenGLPixelFormat alloc]
 357         initWithAttributes: attribs];
 358
 359     if( !fmt )
 360     {
 361         msg_Warn( p_vout, "could not create OpenGL video output" );
 362         return nil;
 363     }
 364
 365     self = [super initWithFrame: NSMakeRect(0,0,10,10) pixelFormat: fmt];
 366     [fmt release];
 367
 368     [[self openGLContext] makeCurrentContext];
 369     [[self openGLContext] update];
 370
 371     /* Swap buffers only during the vertical retrace of the monitor.
 372        http://developer.apple.com/documentation/GraphicsImaging/
 373        Conceptual/OpenGL/chap5/chapter_5_section_44.html */
 374     long params[] = { 1 };
 375     CGLSetParameter( CGLGetCurrentContext(), kCGLCPSwapInterval,
 376                      params );
 377     return self;
 378 }
 379
 380 - (void) reshape
 381 {
 382     int x, y;
 383     vlc_value_t val;
 384
 385     Lock( p_vout );
 386     NSRect bounds = [self bounds];
 387
 388     [[self openGLContext] makeCurrentContext];
 389
 390     var_Get( p_vout, "macosx-stretch", &val );
 391     if( val.b_bool )
 392     {
 393         x = bounds.size.width;
 394         y = bounds.size.height;
 395     }
 396     else if( bounds.size.height * p_vout->fmt_in.i_visible_width *
 397              p_vout->fmt_in.i_sar_num <
 398              bounds.size.width * p_vout->fmt_in.i_visible_height *
 399              p_vout->fmt_in.i_sar_den )
 400     {
 401         x = ( bounds.size.height * p_vout->fmt_in.i_visible_width *
 402               p_vout->fmt_in.i_sar_num ) /
 403             ( p_vout->fmt_in.i_visible_height * p_vout->fmt_in.i_sar_den);
 404
 405         y = bounds.size.height;
 406     }
 407     else
 408     {
 409         x = bounds.size.width;
 410         y = ( bounds.size.width * p_vout->fmt_in.i_visible_height *
 411               p_vout->fmt_in.i_sar_den) /
 412             ( p_vout->fmt_in.i_visible_width * p_vout->fmt_in.i_sar_num  );
 413     }
 414
 415     glViewport( ( bounds.size.width - x ) / 2,
 416                 ( bounds.size.height - y ) / 2, x, y );
 417
 418     if( p_vout->p_sys->b_got_frame )
 419     {
 420         /* Ask the opengl module to redraw */
 421         vout_thread_t * p_parent;
 422         p_parent = (vout_thread_t *) p_vout->p_parent;
 423         Unlock( p_vout );
 424         if( p_parent && p_parent->pf_display )
 425         {
 426             p_parent->pf_display( p_parent, NULL );
 427         }
 428     }
 429     else
 430     {
 431         glClear( GL_COLOR_BUFFER_BIT );
 432         Unlock( p_vout );
 433     }
 434     [super reshape];
 435 }
 436
 437 - (void) update
 438 {
 439     Lock( p_vout );
 440     [super update];
 441     Unlock( p_vout );
 442 }
 443
 444 - (void) drawRect: (NSRect) rect
 445 {
 446     Lock( p_vout );
 447     [[self openGLContext] makeCurrentContext];
 448     glFlush();
 449     [super drawRect:rect];
 450     Unlock( p_vout );
 451 }
 452
 453 @end
 454
 455 /*****************************************************************************
 456  * embedded AGL context implementation
 457  *****************************************************************************/
 458
 459 static void UpdateEmbeddedGeometry( vout_thread_t *p_vout );
 460 static void aglReshape( vout_thread_t * p_vout );
 461
 462 static int aglInit( vout_thread_t * p_vout )
 463 {
 464     UpdateEmbeddedGeometry(p_vout);
 465     var_AddCallback(p_vout->p_vlc, "drawableredraw", DrawableRedraw, p_vout);
 466
 467     aglSetCurrentContext(p_vout->p_sys->agl_ctx);
 468     return VLC_SUCCESS;
 469 }
 470
 471 static void aglEnd( vout_thread_t * p_vout )
 472 {
 473     aglSetCurrentContext(NULL);
 474 }
 475
 476 static void aglReshape( vout_thread_t * p_vout )
 477 {
 478     int x, y;
 479     vlc_value_t val;
 480     int i_offx   = p_vout->p_sys->i_offx;
 481     int i_offy   = p_vout->p_sys->i_offy;
 482     int i_height = p_vout->p_sys->i_height;
 483     int i_width  = p_vout->p_sys->i_width;
 484
 485     Lock( p_vout );
 486
 487     aglSetCurrentContext(p_vout->p_sys->agl_ctx);
 488
 489     var_Get( p_vout, "macosx-stretch", &val );
 490     if( val.b_bool )
 491     {
 492         x = i_width;
 493         y = i_height;
 494     }
 495     else if( i_height * p_vout->fmt_in.i_visible_width *
 496              p_vout->fmt_in.i_sar_num <
 497              i_width * p_vout->fmt_in.i_visible_height *
 498              p_vout->fmt_in.i_sar_den )
 499     {
 500         x = ( i_height * p_vout->fmt_in.i_visible_width *
 501               p_vout->fmt_in.i_sar_num ) /
 502             ( p_vout->fmt_in.i_visible_height * p_vout->fmt_in.i_sar_den);
 503
 504         y = i_height;
 505     }
 506     else
 507     {
 508         x = i_width;
 509         y = ( i_width * p_vout->fmt_in.i_visible_height *
 510               p_vout->fmt_in.i_sar_den) /
 511             ( p_vout->fmt_in.i_visible_width * p_vout->fmt_in.i_sar_num  );
 512     }
 513
 514     glViewport( i_offx+( i_width - x ) / 2,
 515                 i_offy+( i_height - y ) / 2, x, y );
 516
 517     if( p_vout->p_sys->b_got_frame )
 518     {
 519         /* Ask the opengl module to redraw */
 520         vout_thread_t * p_parent;
 521         p_parent = (vout_thread_t *) p_vout->p_parent;
 522         Unlock( p_vout );
 523         if( p_parent && p_parent->pf_display )
 524         {
 525             p_parent->pf_display( p_parent, NULL );
 526         }
 527     }
 528     else
 529     {
 530         glClear( GL_COLOR_BUFFER_BIT );
 531         Unlock( p_vout );
 532     }
 533 }
 534
 535 static int aglManage( vout_thread_t * p_vout )
 536 {
 537     if( p_vout->i_changes & VOUT_ASPECT_CHANGE )
 538     {
 539         aglReshape(p_vout);
 540         p_vout->i_changes &= ~VOUT_ASPECT_CHANGE;
 541     }
 542     if( p_vout->i_changes & VOUT_CROP_CHANGE )
 543     {
 544         aglReshape(p_vout);
 545         p_vout->i_changes &= ~VOUT_CROP_CHANGE;
 546     }
 547     return VLC_SUCCESS;
 548 }
 549
 550 static void aglSwap( vout_thread_t * p_vout )
 551 {
 552     p_vout->p_sys->b_got_frame = VLC_TRUE;
 553     aglSwapBuffers(p_vout->p_sys->agl_ctx);
 554 }
 555
 556 static void UpdateEmbeddedGeometry( vout_thread_t *p_vout )
 557 {
 558     vlc_value_t val;
 559     vlc_value_t valt, vall, valb, valr, valx, valy, valw, valh,
 560                 valportx, valporty;
 561
 562     Rect winBounds;
 563     Rect clientBounds;
 564
 565     GLint rect[4];
 566
 567     var_Get( p_vout->p_vlc, "drawable", &val );
 568     var_Get( p_vout->p_vlc, "drawablet", &valt );
 569     var_Get( p_vout->p_vlc, "drawablel", &vall );
 570     var_Get( p_vout->p_vlc, "drawableb", &valb );
 571     var_Get( p_vout->p_vlc, "drawabler", &valr );
 572     var_Get( p_vout->p_vlc, "drawablex", &valx );
 573     var_Get( p_vout->p_vlc, "drawabley", &valy );
 574     var_Get( p_vout->p_vlc, "drawablew", &valw );
 575     var_Get( p_vout->p_vlc, "drawableh", &valh );
 576     var_Get( p_vout->p_vlc, "drawableportx", &valportx );
 577     var_Get( p_vout->p_vlc, "drawableporty", &valporty );
 578
 579     // mozilla plugin provides coordinates based on port bounds
 580     // however AGL coordinates are based on window structure region
 581     // and are vertically flipped
 582
 583     GetWindowBounds(GetWindowFromPort((CGrafPtr)val.i_int),
 584         kWindowStructureRgn, &winBounds);
 585     GetWindowBounds(GetWindowFromPort((CGrafPtr)val.i_int),
 586         kWindowContentRgn, &clientBounds);
 587
 588     /* update video clipping bounds in drawable */
 589     rect[0] = (clientBounds.left-winBounds.left)
 590             + vall.i_int;                       // from window left edge
 591     rect[1] = (winBounds.bottom-winBounds.top)
 592             - (clientBounds.top-winBounds.top)
 593             - valb.i_int;                       // from window bottom edge
 594     rect[2] = valr.i_int-vall.i_int;            // width
 595     rect[3] = valb.i_int-valt.i_int;            // height
 596     aglSetInteger(p_vout->p_sys->agl_ctx, AGL_BUFFER_RECT, rect);
 597     aglEnable(p_vout->p_sys->agl_ctx, AGL_BUFFER_RECT);
 598
 599     /* update video internal bounds in drawable */
 600     p_vout->p_sys->i_offx   = -vall.i_int - valportx.i_int;
 601     p_vout->p_sys->i_offy   = valb.i_int + valporty.i_int - valh.i_int;
 602     p_vout->p_sys->i_width  = valw.i_int;
 603     p_vout->p_sys->i_height = valh.i_int;
 604
 605     if( p_vout->p_sys->agl_drawable == (AGLDrawable)val.i_int )
 606     {
 607         aglUpdateContext(p_vout->p_sys->agl_ctx);
 608     }
 609     else
 610     {
 611         p_vout->p_sys->agl_drawable = (AGLDrawable)val.i_int;
 612         aglSetDrawable(p_vout->p_sys->agl_ctx, p_vout->p_sys->agl_drawable);
 613     }
 614     aglReshape( p_vout );
 615 }
 616
 617 /* If we're embedded, the application is expected to indicate a
 618  * window change (move/resize/etc) via the "drawableredraw" value.
 619  */
 620
 621 static int DrawableRedraw( vlc_object_t *p_this, const char *psz_name,
 622     vlc_value_t oval, vlc_value_t nval, void *param)
 623 {
 624     vout_thread_t *p_vout = (vout_thread_t *)param;
 625
 626     UpdateEmbeddedGeometry( p_vout );
 627
 628     return VLC_SUCCESS;
 629 }
 630