modules/video_output/macosx.m

   1 /*****************************************************************************
   2  * macosx.m: MacOS X OpenGL provider
   3  *****************************************************************************
   4  * Copyright (C) 2001-2013 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Derk-Jan Hartman <hartman at videolan dot org>
   8  *          Eric Petit <titer@m0k.org>
   9  *          Benjamin Pracht <bigben at videolan dot org>
  10  *          Damien Fouilleul <damienf at videolan dot org>
  11  *          Pierre d'Herbemont <pdherbemont at videolan dot org>
  12  *          Felix Paul Kühne <fkuehne at videolan dot org>
  13  *          David Fuhrmann <david dot fuhrmann at googlemail dot com>
  14  *          Rémi Denis-Courmont
  15  *          Juho Vähä-Herttua <juhovh at iki dot fi>
  16  *          Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
  17  *
  18  * This program is free software; you can redistribute it and/or modify it
  19  * under the terms of the GNU Lesser General Public License as published by
  20  * the Free Software Foundation; either version 2.1 of the License, or
  21  * (at your option) any later version.
  22  *
  23  * This program is distributed in the hope that it will be useful,
  24  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  26  * GNU Lesser General Public License for more details.
  27  *
  28  * You should have received a copy of the GNU Lesser General Public License
  29  * along with this program; if not, write to the Free Software Foundation,
  30  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  31  *****************************************************************************/
  32
  33 /*****************************************************************************
  34  * Preamble
  35  *****************************************************************************/
  36
  37 #import <Cocoa/Cocoa.h>
  38 #import <OpenGL/OpenGL.h>
  39 #import <dlfcn.h>
  40
  41 #ifdef HAVE_CONFIG_H
  42 # include "config.h"
  43 #endif
  44
  45 #include <vlc_common.h>
  46 #include <vlc_plugin.h>
  47 #include <vlc_vout_display.h>
  48 #include <vlc_opengl.h>
  49 #include <vlc_dialog.h>
  50 #include "opengl/vout_helper.h"
  51
  52 /**
  53  * Forward declarations
  54  */
  55 static int Open (vlc_object_t *);
  56 static void Close (vlc_object_t *);
  57
  58 static picture_pool_t *Pool (vout_display_t *vd, unsigned requested_count);
  59 static void PictureRender (vout_display_t *vd, picture_t *pic, subpicture_t *subpicture);
  60 static void PictureDisplay (vout_display_t *vd, picture_t *pic, subpicture_t *subpicture);
  61 static int Control (vout_display_t *vd, int query, va_list ap);
  62
  63 static void *OurGetProcAddress(vlc_gl_t *, const char *);
  64
  65 static int OpenglLock (vlc_gl_t *gl);
  66 static void OpenglUnlock (vlc_gl_t *gl);
  67 static void OpenglSwap (vlc_gl_t *gl);
  68
  69 /**
  70  * Module declaration
  71  */
  72 vlc_module_begin ()
  73     /* Will be loaded even without interface module. see voutgl.m */
  74     set_shortname ("Mac OS X")
  75     set_description (N_("Mac OS X OpenGL video output"))
  76     set_category (CAT_VIDEO)
  77     set_subcategory (SUBCAT_VIDEO_VOUT)
  78     set_capability ("vout display", 300)
  79     set_callbacks (Open, Close)
  80     add_shortcut ("macosx", "vout_macosx")
  81     add_glconv ()
  82 vlc_module_end ()
  83
  84 /**
  85  * Obj-C protocol declaration that drawable-nsobject should follow
  86  */
  87 @protocol VLCOpenGLVideoViewEmbedding <NSObject>
  88 - (void)addVoutSubview:(NSView *)view;
  89 - (void)removeVoutSubview:(NSView *)view;
  90 @end
  91
  92 @interface VLCOpenGLVideoView : NSOpenGLView
  93 {
  94     vout_display_t *vd;
  95     BOOL _hasPendingReshape;
  96 }
  97 - (void)setVoutDisplay:(vout_display_t *)vd;
  98 - (void)setVoutFlushing:(BOOL)flushing;
  99 @end
 100
 101
 102 struct vout_display_sys_t
 103 {
 104     VLCOpenGLVideoView *glView;
 105     id<VLCOpenGLVideoViewEmbedding> container;
 106
 107     vout_window_t *embed;
 108     vlc_gl_t *gl;
 109     vout_display_opengl_t *vgl;
 110
 111     picture_pool_t *pool;
 112     picture_t *current;
 113     bool has_first_frame;
 114
 115     vout_display_place_t place;
 116 };
 117
 118 struct gl_sys
 119 {
 120     CGLContextObj locked_ctx;
 121     VLCOpenGLVideoView *glView;
 122 };
 123
 124 static void *OurGetProcAddress(vlc_gl_t *gl, const char *name)
 125 {
 126     VLC_UNUSED(gl);
 127
 128     return dlsym(RTLD_DEFAULT, name);
 129 }
 130
 131 static int Open (vlc_object_t *this)
 132 {
 133     vout_display_t *vd = (vout_display_t *)this;
 134     vout_display_sys_t *sys = calloc (1, sizeof(*sys));
 135
 136     if (!sys)
 137         return VLC_ENOMEM;
 138
 139     @autoreleasepool {
 140         if (!CGDisplayUsesOpenGLAcceleration (kCGDirectMainDisplay))
 141             msg_Err (this, "no OpenGL hardware acceleration found. this can lead to slow output and unexpected results");
 142
 143         vd->sys = sys;
 144         sys->pool = NULL;
 145         sys->embed = NULL;
 146         sys->vgl = NULL;
 147         sys->gl = NULL;
 148
 149         var_Create(vd->obj.parent, "macosx-glcontext", VLC_VAR_ADDRESS);
 150
 151         /* Get the drawable object */
 152         id container = var_CreateGetAddress (vd, "drawable-nsobject");
 153         if (container)
 154             vout_display_DeleteWindow (vd, NULL);
 155         else {
 156             sys->embed = vout_display_NewWindow (vd, VOUT_WINDOW_TYPE_NSOBJECT);
 157             if (sys->embed)
 158                 container = sys->embed->handle.nsobject;
 159
 160             if (!container) {
 161                 msg_Err(vd, "No drawable-nsobject nor vout_window_t found, passing over.");
 162                 goto error;
 163             }
 164         }
 165
 166         /* This will be released in Close(), on
 167          * main thread, after we are done using it. */
 168         sys->container = [container retain];
 169
 170         /* Get our main view*/
 171         [VLCOpenGLVideoView performSelectorOnMainThread:@selector(getNewView:)
 172                                              withObject:[NSValue valueWithPointer:&sys->glView]
 173                                           waitUntilDone:YES];
 174         if (!sys->glView) {
 175             msg_Err(vd, "Initialization of open gl view failed");
 176             goto error;
 177         }
 178
 179         [sys->glView setVoutDisplay:vd];
 180
 181         /* We don't wait, that means that we'll have to be careful about releasing
 182          * container.
 183          * That's why we'll release on main thread in Close(). */
 184         if ([(id)container respondsToSelector:@selector(addVoutSubview:)])
 185             [(id)container performSelectorOnMainThread:@selector(addVoutSubview:)
 186                                             withObject:sys->glView
 187                                          waitUntilDone:NO];
 188         else if ([container isKindOfClass:[NSView class]]) {
 189             NSView *parentView = container;
 190             [parentView performSelectorOnMainThread:@selector(addSubview:)
 191                                          withObject:sys->glView
 192                                       waitUntilDone:NO];
 193             [sys->glView performSelectorOnMainThread:@selector(setFrameToBoundsOfView:)
 194                                           withObject:[NSValue valueWithPointer:parentView]
 195                                        waitUntilDone:NO];
 196         } else {
 197             msg_Err(vd, "Invalid drawable-nsobject object. drawable-nsobject must either be an NSView or comply to the @protocol VLCOpenGLVideoViewEmbedding.");
 198             goto error;
 199         }
 200
 201         /* Initialize common OpenGL video display */
 202         sys->gl = vlc_object_create(this, sizeof(*sys->gl));
 203
 204         if( unlikely( !sys->gl ) )
 205             goto error;
 206
 207         struct gl_sys *glsys = sys->gl->sys = malloc(sizeof(struct gl_sys));
 208         if( unlikely( !sys->gl->sys ) )
 209         {
 210             vlc_object_release(sys->gl);
 211             goto error;
 212         }
 213         glsys->locked_ctx = NULL;
 214         glsys->glView = sys->glView;
 215         sys->gl->makeCurrent = OpenglLock;
 216         sys->gl->releaseCurrent = OpenglUnlock;
 217         sys->gl->swap = OpenglSwap;
 218         sys->gl->getProcAddress = OurGetProcAddress;
 219
 220         var_SetAddress(vd->obj.parent, "macosx-glcontext",
 221                        [[sys->glView openGLContext] CGLContextObj]);
 222
 223         const vlc_fourcc_t *subpicture_chromas;
 224
 225         if (vlc_gl_MakeCurrent(sys->gl) != VLC_SUCCESS)
 226         {
 227             msg_Err(vd, "Can't attach gl context");
 228             goto error;
 229         }
 230         sys->vgl = vout_display_opengl_New (&vd->fmt, &subpicture_chromas, sys->gl,
 231                                             &vd->cfg->viewpoint);
 232         vlc_gl_ReleaseCurrent(sys->gl);
 233         if (!sys->vgl) {
 234             msg_Err(vd, "Error while initializing opengl display.");
 235             goto error;
 236         }
 237
 238         /* */
 239         vout_display_info_t info = vd->info;
 240         info.has_pictures_invalid = false;
 241         info.subpicture_chromas = subpicture_chromas;
 242
 243         /* Setup vout_display_t once everything is fine */
 244         vd->info = info;
 245
 246         vd->pool = Pool;
 247         vd->prepare = PictureRender;
 248         vd->display = PictureDisplay;
 249         vd->control = Control;
 250
 251         /* */
 252         vout_display_SendEventDisplaySize (vd, vd->fmt.i_visible_width, vd->fmt.i_visible_height);
 253
 254         return VLC_SUCCESS;
 255
 256     error:
 257         Close(this);
 258         return VLC_EGENERIC;
 259     }
 260 }
 261
 262 void Close (vlc_object_t *this)
 263 {
 264     vout_display_t *vd = (vout_display_t *)this;
 265     vout_display_sys_t *sys = vd->sys;
 266
 267     @autoreleasepool {
 268         [sys->glView setVoutDisplay:nil];
 269
 270         var_Destroy (vd, "drawable-nsobject");
 271         if ([(id)sys->container respondsToSelector:@selector(removeVoutSubview:)])
 272         /* This will retain sys->glView */
 273             [(id)sys->container performSelectorOnMainThread:@selector(removeVoutSubview:)
 274                                                  withObject:sys->glView
 275                                               waitUntilDone:NO];
 276
 277         /* release on main thread as explained in Open() */
 278         [(id)sys->container performSelectorOnMainThread:@selector(release)
 279                                              withObject:nil
 280                                           waitUntilDone:NO];
 281         [sys->glView performSelectorOnMainThread:@selector(removeFromSuperview)
 282                                       withObject:nil
 283                                    waitUntilDone:NO];
 284
 285         var_Destroy(vd->obj.parent, "macosx-glcontext");
 286         if (sys->vgl != NULL)
 287         {
 288             vlc_gl_MakeCurrent(sys->gl);
 289             vout_display_opengl_Delete (sys->vgl);
 290             vlc_gl_ReleaseCurrent(sys->gl);
 291         }
 292
 293         if (sys->gl != NULL)
 294         {
 295             assert(((struct gl_sys *)sys->gl->sys)->locked_ctx == NULL);
 296             free(sys->gl->sys);
 297             vlc_object_release(sys->gl);
 298         }
 299
 300         [sys->glView release];
 301
 302         if (sys->embed)
 303             vout_display_DeleteWindow (vd, sys->embed);
 304         free (sys);
 305     }
 306 }
 307
 308 /*****************************************************************************
 309  * vout display callbacks
 310  *****************************************************************************/
 311
 312 static picture_pool_t *Pool (vout_display_t *vd, unsigned requested_count)
 313 {
 314     vout_display_sys_t *sys = vd->sys;
 315
 316     if (!sys->pool && vlc_gl_MakeCurrent(sys->gl) == VLC_SUCCESS)
 317     {
 318         sys->pool = vout_display_opengl_GetPool (sys->vgl, requested_count);
 319         vlc_gl_ReleaseCurrent(sys->gl);
 320     }
 321     return sys->pool;
 322 }
 323
 324 static void PictureRender (vout_display_t *vd, picture_t *pic, subpicture_t *subpicture)
 325 {
 326
 327     vout_display_sys_t *sys = vd->sys;
 328
 329     if (vlc_gl_MakeCurrent(sys->gl) == VLC_SUCCESS)
 330     {
 331         vout_display_opengl_Prepare (sys->vgl, pic, subpicture);
 332         vlc_gl_ReleaseCurrent(sys->gl);
 333     }
 334 }
 335
 336 static void PictureDisplay (vout_display_t *vd, picture_t *pic, subpicture_t *subpicture)
 337 {
 338     vout_display_sys_t *sys = vd->sys;
 339     [sys->glView setVoutFlushing:YES];
 340     if (vlc_gl_MakeCurrent(sys->gl) == VLC_SUCCESS)
 341     {
 342         vout_display_opengl_Display (sys->vgl, &vd->source);
 343         vlc_gl_ReleaseCurrent(sys->gl);
 344     }
 345     [sys->glView setVoutFlushing:NO];
 346     picture_Release (pic);
 347     sys->has_first_frame = true;
 348
 349     if (subpicture)
 350         subpicture_Delete(subpicture);
 351 }
 352
 353 static int Control (vout_display_t *vd, int query, va_list ap)
 354 {
 355     vout_display_sys_t *sys = vd->sys;
 356
 357     if (!vd->sys)
 358         return VLC_EGENERIC;
 359
 360     @autoreleasepool {
 361         switch (query)
 362         {
 363             case VOUT_DISPLAY_CHANGE_DISPLAY_FILLED:
 364             case VOUT_DISPLAY_CHANGE_ZOOM:
 365             case VOUT_DISPLAY_CHANGE_SOURCE_ASPECT:
 366             case VOUT_DISPLAY_CHANGE_SOURCE_CROP:
 367             case VOUT_DISPLAY_CHANGE_DISPLAY_SIZE:
 368             {
 369
 370                 id o_window = [sys->glView window];
 371                 if (!o_window) {
 372                     return VLC_SUCCESS; // this is okay, since the event will occur again when we have a window
 373                 }
 374
 375                 NSSize windowMinSize = [o_window minSize];
 376
 377                 const vout_display_cfg_t *cfg;
 378
 379                 if (query == VOUT_DISPLAY_CHANGE_SOURCE_ASPECT || query == VOUT_DISPLAY_CHANGE_SOURCE_CROP) {
 380                     cfg = vd->cfg;
 381                 } else {
 382                     cfg = (const vout_display_cfg_t*)va_arg (ap, const vout_display_cfg_t *);
 383                 }
 384
 385                 /* we always use our current frame here, because we have some size constraints
 386                  in the ui vout provider */
 387                 vout_display_cfg_t cfg_tmp = *cfg;
 388                 /* on HiDPI displays, the point bounds don't equal the actual pixel based bounds */
 389                 NSRect bounds = [sys->glView convertRectToBacking:[sys->glView bounds]];
 390                 cfg_tmp.display.width = bounds.size.width;
 391                 cfg_tmp.display.height = bounds.size.height;
 392
 393                 /* Reverse vertical alignment as the GL tex are Y inverted */
 394                 if (cfg_tmp.align.vertical == VOUT_DISPLAY_ALIGN_TOP)
 395                     cfg_tmp.align.vertical = VOUT_DISPLAY_ALIGN_BOTTOM;
 396                 else if (cfg_tmp.align.vertical == VOUT_DISPLAY_ALIGN_BOTTOM)
 397                     cfg_tmp.align.vertical = VOUT_DISPLAY_ALIGN_TOP;
 398
 399                 vout_display_place_t place;
 400                 vout_display_PlacePicture (&place, &vd->source, &cfg_tmp, false);
 401                 @synchronized (sys->glView) {
 402                     sys->place = place;
 403                 }
 404
 405                 if (vlc_gl_MakeCurrent (sys->gl) != VLC_SUCCESS)
 406                     return VLC_EGENERIC;
 407                 vout_display_opengl_SetWindowAspectRatio(sys->vgl, (float)place.width / place.height);
 408
 409                 /* For resize, we call glViewport in reshape and not here.
 410                  This has the positive side effect that we avoid erratic sizing as we animate every resize. */
 411                 if (query != VOUT_DISPLAY_CHANGE_DISPLAY_SIZE)
 412                     // x / y are top left corner, but we need the lower left one
 413                     glViewport (place.x, cfg_tmp.display.height - (place.y + place.height), place.width, place.height);
 414                 vlc_gl_ReleaseCurrent (sys->gl);
 415
 416                 return VLC_SUCCESS;
 417             }
 418
 419             case VOUT_DISPLAY_CHANGE_VIEWPOINT:
 420                 return vout_display_opengl_SetViewpoint (sys->vgl,
 421                     &va_arg (ap, const vout_display_cfg_t* )->viewpoint);
 422
 423             case VOUT_DISPLAY_RESET_PICTURES:
 424                 vlc_assert_unreachable ();
 425             default:
 426                 msg_Err (vd, "Unknown request in Mac OS X vout display");
 427                 return VLC_EGENERIC;
 428         }
 429     }
 430 }
 431
 432 /*****************************************************************************
 433  * vout opengl callbacks
 434  *****************************************************************************/
 435 static int OpenglLock (vlc_gl_t *gl)
 436 {
 437     struct gl_sys *sys = gl->sys;
 438     if (![sys->glView respondsToSelector:@selector(openGLContext)])
 439         return 1;
 440
 441     assert(sys->locked_ctx == NULL);
 442
 443     NSOpenGLContext *context = [sys->glView openGLContext];
 444     CGLContextObj cglcntx = [context CGLContextObj];
 445
 446     CGLError err = CGLLockContext (cglcntx);
 447     if (kCGLNoError == err) {
 448         sys->locked_ctx = cglcntx;
 449         [context makeCurrentContext];
 450         return 0;
 451     }
 452     return 1;
 453 }
 454
 455 static void OpenglUnlock (vlc_gl_t *gl)
 456 {
 457     struct gl_sys *sys = gl->sys;
 458     CGLUnlockContext (sys->locked_ctx);
 459     sys->locked_ctx = NULL;
 460 }
 461
 462 static void OpenglSwap (vlc_gl_t *gl)
 463 {
 464     struct gl_sys *sys = gl->sys;
 465     [[sys->glView openGLContext] flushBuffer];
 466 }
 467
 468 /*****************************************************************************
 469  * Our NSView object
 470  *****************************************************************************/
 471 @implementation VLCOpenGLVideoView
 472
 473 #define VLCAssertMainThread() assert([[NSThread currentThread] isMainThread])
 474
 475
 476 + (void)getNewView:(NSValue *)value
 477 {
 478     id *ret = [value pointerValue];
 479     *ret = [[self alloc] init];
 480 }
 481
 482 /**
 483  * Gets called by the Open() method.
 484  */
 485 - (id)init
 486 {
 487     VLCAssertMainThread();
 488
 489     /* Warning - this may be called on non main thread */
 490
 491     NSOpenGLPixelFormatAttribute attribs[] =
 492     {
 493         NSOpenGLPFADoubleBuffer,
 494         NSOpenGLPFAAccelerated,
 495         NSOpenGLPFANoRecovery,
 496         NSOpenGLPFAColorSize, 24,
 497         NSOpenGLPFAAlphaSize, 8,
 498         NSOpenGLPFADepthSize, 24,
 499         NSOpenGLPFAWindow,
 500         NSOpenGLPFAAllowOfflineRenderers,
 501         0
 502     };
 503
 504     NSOpenGLPixelFormat *fmt = [[NSOpenGLPixelFormat alloc] initWithAttributes:attribs];
 505
 506     if (!fmt)
 507         return nil;
 508
 509     self = [super initWithFrame:NSMakeRect(0,0,10,10) pixelFormat:fmt];
 510     [fmt release];
 511
 512     if (!self)
 513         return nil;
 514
 515     /* enable HiDPI support */
 516     [self setWantsBestResolutionOpenGLSurface:YES];
 517
 518     /* request our screen's HDR mode (introduced in OS X 10.11) */
 519 #pragma clang diagnostic push
 520 #pragma clang diagnostic ignored "-Wpartial-availability"
 521     if ([self respondsToSelector:@selector(setWantsExtendedDynamicRangeOpenGLSurface:)]) {
 522         [self setWantsExtendedDynamicRangeOpenGLSurface:YES];
 523     }
 524 #pragma clang diagnostic pop
 525
 526     /* Swap buffers only during the vertical retrace of the monitor.
 527      http://developer.apple.com/documentation/GraphicsImaging/
 528      Conceptual/OpenGL/chap5/chapter_5_section_44.html */
 529     GLint params[] = { 1 };
 530     CGLSetParameter ([[self openGLContext] CGLContextObj], kCGLCPSwapInterval, params);
 531
 532     [[NSNotificationCenter defaultCenter] addObserverForName:NSApplicationDidChangeScreenParametersNotification
 533                                                       object:[NSApplication sharedApplication]
 534                                                        queue:nil
 535                                                   usingBlock:^(NSNotification *notification) {
 536                                                       [self performSelectorOnMainThread:@selector(reshape)
 537                                                                              withObject:nil
 538                                                                           waitUntilDone:NO];
 539                                                   }];
 540
 541     [self setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
 542     return self;
 543 }
 544
 545 - (void)dealloc
 546 {
 547     [[NSNotificationCenter defaultCenter] removeObserver:self];
 548     [super dealloc];
 549 }
 550
 551 /**
 552  * Gets called by the Open() method.
 553  */
 554 - (void)setFrameToBoundsOfView:(NSValue *)value
 555 {
 556     NSView *parentView = [value pointerValue];
 557     [self setFrame:[parentView bounds]];
 558 }
 559
 560 /**
 561  * Gets called by the Close and Open methods.
 562  * (Non main thread).
 563  */
 564 - (void)setVoutDisplay:(vout_display_t *)aVd
 565 {
 566     @synchronized(self) {
 567         vd = aVd;
 568     }
 569 }
 570
 571 /**
 572  * Gets called when the vout will aquire the lock and flush.
 573  * (Non main thread).
 574  */
 575 - (void)setVoutFlushing:(BOOL)flushing
 576 {
 577     if (!flushing)
 578         return;
 579     @synchronized(self) {
 580         _hasPendingReshape = NO;
 581     }
 582 }
 583
 584 /**
 585  * Can -drawRect skip rendering?.
 586  */
 587 - (BOOL)canSkipRendering
 588 {
 589     VLCAssertMainThread();
 590
 591     @synchronized(self) {
 592         BOOL hasFirstFrame = vd && vd->sys->has_first_frame;
 593         return !_hasPendingReshape && hasFirstFrame;
 594     }
 595 }
 596
 597
 598 /**
 599  * Local method that locks the gl context.
 600  */
 601 - (BOOL)lockgl
 602 {
 603     VLCAssertMainThread();
 604     NSOpenGLContext *context = [self openGLContext];
 605     CGLError err = CGLLockContext ([context CGLContextObj]);
 606     if (err == kCGLNoError)
 607         [context makeCurrentContext];
 608     return err == kCGLNoError;
 609 }
 610
 611 /**
 612  * Local method that unlocks the gl context.
 613  */
 614 - (void)unlockgl
 615 {
 616     VLCAssertMainThread();
 617     CGLUnlockContext ([[self openGLContext] CGLContextObj]);
 618 }
 619
 620 /**
 621  * Local method that force a rendering of a frame.
 622  * This will get called if Cocoa forces us to redraw (via -drawRect).
 623  */
 624 - (void)render
 625 {
 626     VLCAssertMainThread();
 627
 628     // We may have taken some times to take the opengl Lock.
 629     // Check here to see if we can just skip the frame as well.
 630     if ([self canSkipRendering])
 631         return;
 632
 633     BOOL hasFirstFrame;
 634     @synchronized(self) { // vd can be accessed from multiple threads
 635         hasFirstFrame = vd && vd->sys->has_first_frame;
 636     }
 637
 638     if (hasFirstFrame)
 639         // This will lock gl.
 640         vout_display_opengl_Display (vd->sys->vgl, &vd->source);
 641     else
 642         glClear (GL_COLOR_BUFFER_BIT);
 643 }
 644
 645 /**
 646  * Method called by Cocoa when the view is resized.
 647  */
 648 - (void)reshape
 649 {
 650     VLCAssertMainThread();
 651
 652     /* on HiDPI displays, the point bounds don't equal the actual pixel based bounds */
 653     NSRect bounds = [self convertRectToBacking:[self bounds]];
 654     vout_display_place_t place;
 655
 656     @synchronized(self) {
 657         if (vd) {
 658             vout_display_cfg_t cfg_tmp = *(vd->cfg);
 659             cfg_tmp.display.width  = bounds.size.width;
 660             cfg_tmp.display.height = bounds.size.height;
 661
 662             vout_display_PlacePicture (&place, &vd->source, &cfg_tmp, false);
 663             vd->sys->place = place;
 664             vout_display_SendEventDisplaySize (vd, bounds.size.width, bounds.size.height);
 665         }
 666     }
 667
 668     if ([self lockgl]) {
 669         // x / y are top left corner, but we need the lower left one
 670         glViewport (place.x, bounds.size.height - (place.y + place.height), place.width, place.height);
 671
 672         @synchronized(self) {
 673             // This may be cleared before -drawRect is being called,
 674             // in this case we'll skip the rendering.
 675             // This will save us for rendering two frames (or more) for nothing
 676             // (one by the vout, one (or more) by drawRect)
 677             _hasPendingReshape = YES;
 678         }
 679
 680         [self unlockgl];
 681
 682         [super reshape];
 683     }
 684 }
 685
 686 /**
 687  * Method called by Cocoa when the view is resized or the location has changed.
 688  * We just need to make sure we are locking here.
 689  */
 690 - (void)update
 691 {
 692     VLCAssertMainThread();
 693     BOOL success = [self lockgl];
 694     if (!success)
 695         return;
 696
 697     [super update];
 698
 699     [self unlockgl];
 700 }
 701
 702 /**
 703  * Method called by Cocoa to force redraw.
 704  */
 705 - (void)drawRect:(NSRect) rect
 706 {
 707     VLCAssertMainThread();
 708
 709     if ([self canSkipRendering])
 710         return;
 711
 712     BOOL success = [self lockgl];
 713     if (!success)
 714         return;
 715
 716     [self render];
 717
 718     [self unlockgl];
 719 }
 720
 721 - (void)renewGState
 722 {
 723     NSWindow *window = [self window];
 724
 725     // Remove flashes with splitter view.
 726     if ([window respondsToSelector:@selector(disableScreenUpdatesUntilFlush)])
 727         [window disableScreenUpdatesUntilFlush];
 728
 729     [super renewGState];
 730 }
 731
 732 - (BOOL)isOpaque
 733 {
 734     return YES;
 735 }
 736
 737 #pragma mark -
 738 #pragma mark Mouse handling
 739
 740 - (void)mouseDown:(NSEvent *)o_event
 741 {
 742     @synchronized (self) {
 743         if (vd) {
 744             if ([o_event type] == NSLeftMouseDown && !([o_event modifierFlags] &  NSControlKeyMask)) {
 745                 if ([o_event clickCount] <= 1)
 746                     vout_display_SendEventMousePressed (vd, MOUSE_BUTTON_LEFT);
 747             }
 748         }
 749     }
 750
 751     [super mouseDown:o_event];
 752 }
 753
 754 - (void)otherMouseDown:(NSEvent *)o_event
 755 {
 756     @synchronized (self) {
 757         if (vd)
 758             vout_display_SendEventMousePressed (vd, MOUSE_BUTTON_CENTER);
 759     }
 760
 761     [super otherMouseDown: o_event];
 762 }
 763
 764 - (void)mouseUp:(NSEvent *)o_event
 765 {
 766     @synchronized (self) {
 767         if (vd) {
 768             if ([o_event type] == NSLeftMouseUp)
 769                 vout_display_SendEventMouseReleased (vd, MOUSE_BUTTON_LEFT);
 770         }
 771     }
 772
 773     [super mouseUp: o_event];
 774 }
 775
 776 - (void)otherMouseUp:(NSEvent *)o_event
 777 {
 778     @synchronized (self) {
 779         if (vd)
 780             vout_display_SendEventMouseReleased (vd, MOUSE_BUTTON_CENTER);
 781     }
 782
 783     [super otherMouseUp: o_event];
 784 }
 785
 786 - (void)mouseMoved:(NSEvent *)o_event
 787 {
 788     /* on HiDPI displays, the point bounds don't equal the actual pixel based bounds */
 789     NSPoint ml = [self convertPoint: [o_event locationInWindow] fromView: nil];
 790     NSRect videoRect = [self bounds];
 791     BOOL b_inside = [self mouse: ml inRect: videoRect];
 792
 793     ml = [self convertPointToBacking: ml];
 794     videoRect = [self convertRectToBacking: videoRect];
 795
 796     if (b_inside) {
 797         @synchronized (self) {
 798             if (vd) {
 799                 vout_display_SendMouseMovedDisplayCoordinates(vd, ORIENT_NORMAL,
 800                                                               (int)ml.x, videoRect.size.height - (int)ml.y,
 801                                                               &vd->sys->place);
 802             }
 803         }
 804     }
 805
 806     [super mouseMoved: o_event];
 807 }
 808
 809 - (void)mouseDragged:(NSEvent *)o_event
 810 {
 811     [self mouseMoved: o_event];
 812     [super mouseDragged: o_event];
 813 }
 814
 815 - (void)otherMouseDragged:(NSEvent *)o_event
 816 {
 817     [self mouseMoved: o_event];
 818     [super otherMouseDragged: o_event];
 819 }
 820
 821 - (void)rightMouseDragged:(NSEvent *)o_event
 822 {
 823     [self mouseMoved: o_event];
 824     [super rightMouseDragged: o_event];
 825 }
 826
 827 - (BOOL)acceptsFirstResponder
 828 {
 829     return YES;
 830 }
 831
 832 - (BOOL)mouseDownCanMoveWindow
 833 {
 834     return YES;
 835 }
 836
 837 @end