1 /*****************************************************************************
2 * voutgl.m: MacOS X OpenGL provider
3 *****************************************************************************
4 * Copyright (C) 2001-2009 the VideoLAN team
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 * Damien Fouilleul <damienf at videolan dot org>
14 * Pierre d'Herbemont <pdherbemont at videolan dot org>
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
29 *****************************************************************************/
31 /*****************************************************************************
33 *****************************************************************************/
35 #import <Cocoa/Cocoa.h>
36 #import <OpenGL/OpenGL.h>
42 #include <vlc_common.h>
43 #include <vlc_plugin.h>
44 #include <vlc_vout_display.h>
45 #include <vlc_vout_opengl.h>
49 * Forward declarations
51 static int Open(vlc_object_t *);
52 static void Close(vlc_object_t *);
54 static picture_pool_t *Pool(vout_display_t *vd, unsigned requested_count);
55 static void PictureRender(vout_display_t *vd, picture_t *pic);
56 static void PictureDisplay(vout_display_t *vd, picture_t *pic);
57 static int Control (vout_display_t *vd, int query, va_list ap);
59 static int OpenglLock(vout_opengl_t *gl);
60 static void OpenglUnlock(vout_opengl_t *gl);
61 static void OpenglSwap(vout_opengl_t *gl);
67 /* Will be loaded even without interface module. see voutgl.m */
68 set_shortname("Mac OS X")
69 set_description( N_("Mac OS X OpenGL video output (requires drawable-nsobject)"))
70 set_category(CAT_VIDEO)
71 set_subcategory(SUBCAT_VIDEO_VOUT )
72 set_capability("vout display", 300)
73 set_callbacks(Open, Close)
75 add_shortcut("macosx")
76 add_shortcut("vout_macosx")
80 * Obj-C protocol declaration that drawable-nsobject should follow
82 @protocol VLCOpenGLVideoViewEmbedding <NSObject>
83 - (void)addVoutSubview:(NSView *)view;
84 - (void)removeVoutSubview:(NSView *)view;
87 @interface VLCOpenGLVideoView : NSOpenGLView
90 BOOL _hasPendingReshape;
92 - (void)setVoutDisplay:(vout_display_t *)vd;
93 - (void)setVoutFlushing:(BOOL)flushing;
97 struct vout_display_sys_t
99 VLCOpenGLVideoView *glView;
100 id<VLCOpenGLVideoViewEmbedding> container;
103 vout_display_opengl_t vgl;
105 picture_pool_t *pool;
107 bool has_first_frame;
110 static int Open(vlc_object_t *this)
112 vout_display_t *vd = (vout_display_t *)this;
113 vout_display_sys_t *sys = calloc(1, sizeof(*sys));
114 NSAutoreleasePool *nsPool = nil;
123 /* Get the drawable object */
124 id container = var_CreateGetAddress(vd, "drawable-nsobject");
127 msg_Dbg(vd, "No drawable-nsobject, passing over.");
131 /* This will be released in Close(), on
132 * main thread, after we are done using it. */
133 sys->container = [container retain];
135 /* Get our main view*/
136 nsPool = [[NSAutoreleasePool alloc] init];
138 [VLCOpenGLVideoView performSelectorOnMainThread:@selector(getNewView:) withObject:[NSValue valueWithPointer:&sys->glView] waitUntilDone:YES];
142 [sys->glView setVoutDisplay:vd];
144 /* We don't wait, that means that we'll have to be careful about releasing
146 * That's why we'll release on main thread in Close(). */
147 [(id)container performSelectorOnMainThread:@selector(addVoutSubview:) withObject:sys->glView waitUntilDone:NO];
151 /* Initialize common OpenGL video display */
152 sys->gl.lock = OpenglLock;
153 sys->gl.unlock = OpenglUnlock;
154 sys->gl.swap = OpenglSwap;
157 if (vout_display_opengl_Init(&sys->vgl, &vd->fmt, &sys->gl))
164 vout_display_info_t info = vd->info;
165 info.has_pictures_invalid = false;
167 /* Setup vout_display_t once everything is fine */
171 vd->prepare = PictureRender;
172 vd->display = PictureDisplay;
173 vd->control = Control;
176 vout_display_SendEventFullscreen (vd, false);
177 vout_display_SendEventDisplaySize (vd, vd->source.i_visible_width, vd->source.i_visible_height, false);
187 void Close(vlc_object_t *this)
189 vout_display_t *vd = (vout_display_t *)this;
190 vout_display_sys_t *sys = vd->sys;
192 [sys->glView setVoutDisplay:nil];
194 var_Destroy(vd, "drawable-nsobject");
195 /* This will retain sys->glView */
196 [(id)sys->container performSelectorOnMainThread:@selector(removeVoutSubview:) withObject:sys->glView waitUntilDone:NO];
197 /* release on main thread as explained in Open() */
198 [(id)sys->container performSelectorOnMainThread:@selector(release) withObject:nil waitUntilDone:NO];
199 [sys->glView performSelectorOnMainThread:@selector(removeFromSuperview) withObject:nil waitUntilDone:NO];
201 [sys->glView release];
203 if (sys->gl.sys != NULL)
204 vout_display_opengl_Clean(&sys->vgl);
209 /*****************************************************************************
210 * vout display callbacks
211 *****************************************************************************/
213 static picture_pool_t *Pool(vout_display_t *vd, unsigned requested_count)
215 vout_display_sys_t *sys = vd->sys;
216 VLC_UNUSED(requested_count);
219 sys->pool = vout_display_opengl_GetPool (&sys->vgl);
224 static void PictureRender(vout_display_t *vd, picture_t *pic)
227 vout_display_sys_t *sys = vd->sys;
229 vout_display_opengl_Prepare( &sys->vgl, pic );
232 static void PictureDisplay(vout_display_t *vd, picture_t *pic)
234 vout_display_sys_t *sys = vd->sys;
235 [sys->glView setVoutFlushing:YES];
236 vout_display_opengl_Display(&sys->vgl, &vd->fmt );
237 [sys->glView setVoutFlushing:NO];
238 picture_Release (pic);
239 sys->has_first_frame = true;
242 static int Control (vout_display_t *vd, int query, va_list ap)
244 vout_display_sys_t *sys = vd->sys;
248 case VOUT_DISPLAY_CHANGE_FULLSCREEN:
249 case VOUT_DISPLAY_CHANGE_WINDOW_STATE:
250 case VOUT_DISPLAY_CHANGE_DISPLAY_SIZE:
251 case VOUT_DISPLAY_CHANGE_DISPLAY_FILLED:
252 case VOUT_DISPLAY_CHANGE_ZOOM:
253 case VOUT_DISPLAY_CHANGE_SOURCE_ASPECT:
254 case VOUT_DISPLAY_CHANGE_SOURCE_CROP:
259 case VOUT_DISPLAY_HIDE_MOUSE:
262 case VOUT_DISPLAY_GET_OPENGL:
264 vout_opengl_t **gl = va_arg (ap, vout_opengl_t **);
269 case VOUT_DISPLAY_RESET_PICTURES:
272 msg_Err (vd, "Unknown request in Mac OS X vout display");
277 /*****************************************************************************
278 * vout opengl callbacks
279 *****************************************************************************/
280 static int OpenglLock(vout_opengl_t *gl)
282 vout_display_sys_t *sys = (vout_display_sys_t *)gl->sys;
283 NSOpenGLContext *context = [sys->glView openGLContext];
284 CGLError err = CGLLockContext([context CGLContextObj]);
285 if (kCGLNoError == err)
287 [context makeCurrentContext];
293 static void OpenglUnlock(vout_opengl_t *gl)
295 vout_display_sys_t *sys = (vout_display_sys_t *)gl->sys;
296 CGLUnlockContext([[sys->glView openGLContext] CGLContextObj]);
299 static void OpenglSwap(vout_opengl_t *gl)
301 vout_display_sys_t *sys = (vout_display_sys_t *)gl->sys;
302 [[sys->glView openGLContext] flushBuffer];
305 /*****************************************************************************
307 *****************************************************************************/
308 @implementation VLCOpenGLVideoView
310 #define VLCAssertMainThread() assert([[NSThread currentThread] isMainThread])
312 + (void)getNewView:(NSValue *)value
314 id *ret = [value pointerValue];
315 *ret = [[self alloc] init];
319 * Gets called by the Open() method.
323 VLCAssertMainThread();
325 /* Warning - this may be called on non main thread */
327 NSOpenGLPixelFormatAttribute attribs[] =
329 NSOpenGLPFADoubleBuffer,
330 NSOpenGLPFAAccelerated,
331 NSOpenGLPFANoRecovery,
332 NSOpenGLPFAColorSize, 24,
333 NSOpenGLPFAAlphaSize, 8,
334 NSOpenGLPFADepthSize, 24,
339 NSOpenGLPixelFormat *fmt = [[NSOpenGLPixelFormat alloc] initWithAttributes:attribs];
344 self = [super initWithFrame:NSMakeRect(0,0,10,10) pixelFormat:fmt];
350 /* Swap buffers only during the vertical retrace of the monitor.
351 http://developer.apple.com/documentation/GraphicsImaging/
352 Conceptual/OpenGL/chap5/chapter_5_section_44.html */
353 GLint params[] = { 1 };
354 CGLSetParameter([[self openGLContext] CGLContextObj], kCGLCPSwapInterval, params);
360 * Gets called by the Close and Open methods.
363 - (void)setVoutDisplay:(vout_display_t *)aVd
365 @synchronized(self) {
372 * Gets called when the vout will aquire the lock and flush.
375 - (void)setVoutFlushing:(BOOL)flushing
379 @synchronized(self) {
380 _hasPendingReshape = NO;
385 * Can -drawRect skip rendering?.
387 - (BOOL)canSkipRendering
389 VLCAssertMainThread();
391 @synchronized(self) {
392 BOOL hasFirstFrame = vd && vd->sys->has_first_frame;
393 return !_hasPendingReshape && hasFirstFrame;
399 * Local method that locks the gl context.
403 VLCAssertMainThread();
404 CGLError err = CGLLockContext([[self openGLContext] CGLContextObj]);
405 return err == kCGLNoError;
409 * Local method that unlocks the gl context.
413 VLCAssertMainThread();
414 CGLUnlockContext([[self openGLContext] CGLContextObj]);
418 * Local method that force a rendering of a frame.
419 * This will get called if Cocoa forces us to redraw (via -drawRect).
423 VLCAssertMainThread();
425 // We may have taken some times to take the opengl Lock.
426 // Check here to see if we can just skip the frame as well.
427 if ([self canSkipRendering])
431 @synchronized(self) { // vd can be accessed from multiple threads
432 hasFirstFrame = vd && vd->sys->has_first_frame;
436 // This will lock gl.
437 vout_display_opengl_Display( &vd->sys->vgl, &vd->source );
440 glClear(GL_COLOR_BUFFER_BIT);
444 * Method called by Cocoa when the view is resized.
448 VLCAssertMainThread();
450 NSRect bounds = [self bounds];
452 CGFloat height = bounds.size.height;
453 CGFloat width = bounds.size.width;
455 GLint x = width, y = height;
457 @synchronized(self) {
459 CGFloat videoHeight = vd->source.i_visible_height;
460 CGFloat videoWidth = vd->source.i_visible_width;
462 GLint sarNum = vd->source.i_sar_num;
463 GLint sarDen = vd->source.i_sar_den;
465 if (height * videoWidth * sarNum < width * videoHeight * sarDen)
467 x = (height * videoWidth * sarNum) / (videoHeight * sarDen);
473 y = (width * videoHeight * sarDen) / (videoWidth * sarNum);
480 glViewport((width - x) / 2, (height - y) / 2, x, y);
482 @synchronized(self) {
483 // This may be cleared before -drawRect is being called,
484 // in this case we'll skip the rendering.
485 // This will save us for rendering two frames (or more) for nothing
486 // (one by the vout, one (or more) by drawRect)
487 _hasPendingReshape = YES;
496 * Method called by Cocoa when the view is resized or the location has changed.
497 * We just need to make sure we are locking here.
501 VLCAssertMainThread();
502 BOOL success = [self lockgl];
512 * Method called by Cocoa to force redraw.
514 - (void)drawRect:(NSRect) rect
516 VLCAssertMainThread();
518 if ([self canSkipRendering])
521 BOOL success = [self lockgl];
532 NSWindow *window = [self window];
534 // Remove flashes with splitter view.
535 if ([window respondsToSelector:@selector(disableScreenUpdatesUntilFlush)])
536 [window disableScreenUpdatesUntilFlush];
541 - (BOOL)mouseDownCanMoveWindow