git.sesse.net Git - vlc/blob - modules/gui/minimal_macosx/VLCOpenGLVoutView.m

   1 /*****************************************************************************
   2  * VLCOpenGLVoutView.m: MacOS X OpenGL provider
   3  *****************************************************************************
   4  * Copyright (C) 2001-2007 the VideoLAN team
   5  * $Id$
   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  *          Damien Fouilleul <damienf at videolan dot org>
  14  *          Pierre d'Herbemont <pdherbemont at videolan dot org>
  15  *
  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.
  20  *
  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.
  25  *
  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  *****************************************************************************/
  30
  31 /*****************************************************************************
  32  * Preamble
  33  *****************************************************************************/
  34 #include "intf.h"
  35 #include "voutgl.h"
  36 #include "VLCOpenGLVoutView.h"
  37 #include "VLCMinimalVoutWindow.h"
  38
  39 #include <OpenGL/OpenGL.h>
  40 #include <OpenGL/gl.h>
  41
  42 /*****************************************************************************
  43  * cocoaglvoutviewInit
  44  *****************************************************************************/
  45 int cocoaglvoutviewInit( vout_thread_t * p_vout )
  46 {
  47     vlc_value_t value_drawable;
  48     id <VLCOpenGLVoutEmbedding> o_cocoaglview_container;
  49
  50     msg_Dbg( p_vout, "Mac OS X Vout is opening" );
  51
  52     var_Create( p_vout, "drawable", VLC_VAR_DOINHERIT );
  53     var_Get( p_vout, "drawable", &value_drawable );
  54
  55     p_vout->p_sys->o_pool = [[NSAutoreleasePool alloc] init];
  56
  57     o_cocoaglview_container = (id) value_drawable.i_int;
  58     if (!o_cocoaglview_container)
  59     {
  60         msg_Warn( p_vout, "No drawable!, spawing a window" );
  61     }
  62
  63     p_vout->p_sys->b_embedded = VLC_FALSE;
  64
  65
  66     /* Create the GL view */
  67     struct args { vout_thread_t * p_vout; id <VLCOpenGLVoutEmbedding> container; } args = { p_vout, o_cocoaglview_container };
  68
  69     [VLCOpenGLVoutView performSelectorOnMainThread:@selector(autoinitOpenGLVoutViewIntVoutWithContainer:)
  70                         withObject:[NSData dataWithBytes: &args length: sizeof(struct args)] waitUntilDone:YES];
  71
  72     [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
  73     return VLC_SUCCESS;
  74 }
  75
  76 /*****************************************************************************
  77  * cocoaglvoutviewEnd
  78  *****************************************************************************/
  79 void cocoaglvoutviewEnd( vout_thread_t * p_vout )
  80 {
  81     id <VLCOpenGLVoutEmbedding> o_cocoaglview_container;
  82
  83     msg_Dbg( p_vout, "Mac OS X Vout is closing" );
  84     var_Destroy( p_vout, "drawable" );
  85
  86     o_cocoaglview_container = [p_vout->p_sys->o_glview container];
  87
  88     /* Make sure our view won't request the vout now */
  89     [p_vout->p_sys->o_glview detachFromVout];
  90     msg_Dbg( p_vout, "Mac OS X Vout is closing" );
  91
  92     /* Let the view go, _without_blocking_ */
  93     [p_vout->p_sys->o_glview performSelectorOnMainThread:@selector(removeFromSuperview) withObject:NULL waitUntilDone:NO];
  94
  95     if( [(id)o_cocoaglview_container respondsToSelector:@selector(removeVoutSubview:)] )
  96         [o_cocoaglview_container removeVoutSubview: p_vout->p_sys->o_glview];
  97
  98     [p_vout->p_sys->o_glview release];
  99
 100     [p_vout->p_sys->o_pool release];
 101
 102 }
 103
 104 /*****************************************************************************
 105  * cocoaglvoutviewManage
 106  *****************************************************************************/
 107 int cocoaglvoutviewManage( vout_thread_t * p_vout )
 108 {
 109     if( p_vout->i_changes & VOUT_ASPECT_CHANGE )
 110     {
 111         [p_vout->p_sys->o_glview reshape];
 112         p_vout->i_changes &= ~VOUT_ASPECT_CHANGE;
 113     }
 114     if( p_vout->i_changes & VOUT_CROP_CHANGE )
 115     {
 116         [p_vout->p_sys->o_glview reshape];
 117         p_vout->i_changes &= ~VOUT_CROP_CHANGE;
 118     }
 119
 120     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 121     {
 122         NSAutoreleasePool *o_pool = [[NSAutoreleasePool alloc] init];
 123
 124         p_vout->b_fullscreen = !p_vout->b_fullscreen;
 125
 126         if( p_vout->b_fullscreen )
 127             [[p_vout->p_sys->o_glview container] enterFullscreen];
 128         else
 129             [[p_vout->p_sys->o_glview container] leaveFullscreen];
 130
 131         [o_pool release];
 132
 133         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 134     }
 135
 136     //[[p_vout->p_sys->o_glview container] manage];
 137     return VLC_SUCCESS;
 138 }
 139
 140 /*****************************************************************************
 141  * cocoaglvoutviewControl: control facility for the vout
 142  *****************************************************************************/
 143 int cocoaglvoutviewControl( vout_thread_t *p_vout, int i_query, va_list args )
 144 {
 145     vlc_bool_t b_arg;
 146
 147     switch( i_query )
 148     {
 149         case VOUT_SET_STAY_ON_TOP:
 150             b_arg = va_arg( args, vlc_bool_t );
 151             [[p_vout->p_sys->o_glview container] setOnTop: b_arg];
 152             return VLC_SUCCESS;
 153
 154         case VOUT_CLOSE:
 155         case VOUT_REPARENT:
 156         default:
 157             return vout_vaControlDefault( p_vout, i_query, args );
 158     }
 159 }
 160
 161 /*****************************************************************************
 162  * cocoaglvoutviewSwap
 163  *****************************************************************************/
 164 void cocoaglvoutviewSwap( vout_thread_t * p_vout )
 165 {
 166     p_vout->p_sys->b_got_frame = VLC_TRUE;
 167     [[p_vout->p_sys->o_glview openGLContext] flushBuffer];
 168 }
 169
 170 /*****************************************************************************
 171  * cocoaglvoutviewLock
 172  *****************************************************************************/
 173 int cocoaglvoutviewLock( vout_thread_t * p_vout )
 174 {
 175     if( kCGLNoError == CGLLockContext([[p_vout->p_sys->o_glview openGLContext] CGLContextObj]) )
 176     {
 177         [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
 178         return 0;
 179     }
 180     return 1;
 181 }
 182
 183 /*****************************************************************************
 184  * cocoaglvoutviewUnlock
 185  *****************************************************************************/
 186 void cocoaglvoutviewUnlock( vout_thread_t * p_vout )
 187 {
 188     CGLUnlockContext([[p_vout->p_sys->o_glview openGLContext] CGLContextObj]);
 189 }
 190
 191 /*****************************************************************************
 192  * VLCOpenGLVoutView implementation
 193  *****************************************************************************/
 194 @implementation VLCOpenGLVoutView
 195
 196 /* Init a new gl view and register it to both the framework and the
 197  * vout_thread_t. Must be called from main thread. */
 198 + (void) autoinitOpenGLVoutViewIntVoutWithContainer: (NSData *) argsAsData
 199 {
 200     NSAutoreleasePool   *pool = [[NSAutoreleasePool alloc] init];
 201     struct args { vout_thread_t * p_vout; id <VLCOpenGLVoutEmbedding> container; } *
 202         args = (struct args *)[argsAsData bytes];
 203     VLCOpenGLVoutView * oglview;
 204
 205     if( !args->container )
 206     {
 207         args->container = [[VLCMinimalVoutWindow alloc] initWithContentRect: NSMakeRect( 0, 0, args->p_vout->i_window_width, args->p_vout->i_window_height )];
 208         [(VLCMinimalVoutWindow *)args->container makeKeyAndOrderFront: nil];
 209     }
 210     oglview = [[VLCOpenGLVoutView alloc] initWithVout: args->p_vout container: args->container];
 211
 212     args->p_vout->p_sys->o_glview = oglview;
 213     [args->container addVoutSubview: oglview];
 214
 215     [pool release];
 216 }
 217
 218 - (void)dealloc
 219 {
 220     [objectLock dealloc];
 221     [super dealloc];
 222 }
 223
 224 - (void)removeFromSuperview
 225 {
 226     [super removeFromSuperview];
 227 }
 228
 229
 230 - (id) initWithVout: (vout_thread_t *) vout container: (id <VLCOpenGLVoutEmbedding>) aContainer
 231 {
 232     NSOpenGLPixelFormatAttribute attribs[] =
 233     {
 234         NSOpenGLPFADoubleBuffer,
 235         NSOpenGLPFAAccelerated,
 236         NSOpenGLPFANoRecovery,
 237         NSOpenGLPFAColorSize, 24,
 238         NSOpenGLPFAAlphaSize, 8,
 239         NSOpenGLPFADepthSize, 24,
 240         NSOpenGLPFAWindow,
 241         0
 242     };
 243
 244     NSOpenGLPixelFormat * fmt = [[NSOpenGLPixelFormat alloc]
 245         initWithAttributes: attribs];
 246
 247     if( !fmt )
 248     {
 249         msg_Warn( p_vout, "could not create OpenGL video output" );
 250         return nil;
 251     }
 252
 253     if( self = [super initWithFrame: NSMakeRect(0,0,10,10) pixelFormat: fmt] )
 254     {
 255         p_vout = vout;
 256         container = aContainer;
 257         objectLock = [[NSLock alloc] init];
 258
 259         [fmt release];
 260
 261         [[self openGLContext] makeCurrentContext];
 262         [[self openGLContext] update];
 263
 264         /* Swap buffers only during the vertical retrace of the monitor.
 265         http://developer.apple.com/documentation/GraphicsImaging/
 266         Conceptual/OpenGL/chap5/chapter_5_section_44.html */
 267         long params[] = { 1 };
 268         CGLSetParameter( CGLGetCurrentContext(), kCGLCPSwapInterval,
 269                      params );
 270     }
 271     return self;
 272 }
 273
 274 - (void) detachFromVout
 275 {
 276     [objectLock lock];
 277     p_vout = NULL;
 278     [objectLock unlock];
 279 }
 280
 281 - (id <VLCOpenGLVoutEmbedding>) container
 282 {
 283     return container;
 284 }
 285
 286 - (void) destroyVout
 287 {
 288     [objectLock lock];
 289     if( p_vout )
 290     {
 291         vlc_object_detach( p_vout );
 292         vlc_object_release( p_vout );
 293         vout_Destroy( (vout_thread_t *)p_vout );
 294     }
 295     [objectLock unlock];
 296 }
 297
 298 - (void) reshape
 299 {
 300     int x, y;
 301     vlc_value_t val;
 302
 303     [objectLock lock];
 304     if( !p_vout )
 305     {
 306         [objectLock unlock];
 307         return;
 308     }
 309
 310     cocoaglvoutviewLock( p_vout );
 311     NSRect bounds = [self bounds];
 312
 313     if( [[self container] stretchesVideo] )
 314     {
 315         x = bounds.size.width;
 316         y = bounds.size.height;
 317     }
 318     else if( bounds.size.height * p_vout->fmt_in.i_visible_width *
 319              p_vout->fmt_in.i_sar_num <
 320              bounds.size.width * p_vout->fmt_in.i_visible_height *
 321              p_vout->fmt_in.i_sar_den )
 322     {
 323         x = ( bounds.size.height * p_vout->fmt_in.i_visible_width *
 324               p_vout->fmt_in.i_sar_num ) /
 325             ( p_vout->fmt_in.i_visible_height * p_vout->fmt_in.i_sar_den);
 326
 327         y = bounds.size.height;
 328     }
 329     else
 330     {
 331         x = bounds.size.width;
 332         y = ( bounds.size.width * p_vout->fmt_in.i_visible_height *
 333               p_vout->fmt_in.i_sar_den) /
 334             ( p_vout->fmt_in.i_visible_width * p_vout->fmt_in.i_sar_num  );
 335     }
 336
 337     glViewport( ( bounds.size.width - x ) / 2,
 338                 ( bounds.size.height - y ) / 2, x, y );
 339
 340     if( p_vout->p_sys->b_got_frame )
 341     {
 342         /* Ask the opengl module to redraw */
 343         vout_thread_t * p_parent;
 344         p_parent = (vout_thread_t *) p_vout->p_parent;
 345         cocoaglvoutviewUnlock( p_vout );
 346         if( p_parent && p_parent->pf_display )
 347         {
 348             p_parent->pf_display( p_parent, NULL );
 349         }
 350     }
 351     else
 352     {
 353         glClear( GL_COLOR_BUFFER_BIT );
 354         cocoaglvoutviewUnlock( p_vout );
 355     }
 356     [objectLock unlock];
 357     [super reshape];
 358 }
 359
 360 - (void) update
 361 {
 362     if( kCGLNoError != CGLLockContext([[self openGLContext] CGLContextObj]) )
 363         return;
 364     [super update];
 365     CGLUnlockContext([[p_vout->p_sys->o_glview openGLContext] CGLContextObj]);
 366 }
 367
 368 - (void) drawRect: (NSRect) rect
 369 {
 370     if( kCGLNoError != CGLLockContext([[self openGLContext] CGLContextObj]) )
 371         return;
 372     [[self openGLContext] flushBuffer];
 373     [super drawRect:rect];
 374     CGLUnlockContext([[p_vout->p_sys->o_glview openGLContext] CGLContextObj]);
 375 }
 376
 377 - (BOOL)mouseDownCanMoveWindow
 378 {
 379     return YES;
 380 }
 381 @end
 382