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 = 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     bool b_arg;
 146
 147     switch( i_query )
 148     {
 149         case VOUT_SET_STAY_ON_TOP:
 150             b_arg = (bool) va_arg( args, int );
 151             [[p_vout->p_sys->o_glview container] setOnTop: b_arg];
 152             return VLC_SUCCESS;
 153
 154         default:
 155             return VLC_EGENERIC;
 156     }
 157 }
 158
 159 /*****************************************************************************
 160  * cocoaglvoutviewSwap
 161  *****************************************************************************/
 162 void cocoaglvoutviewSwap( vout_thread_t * p_vout )
 163 {
 164     p_vout->p_sys->b_got_frame = true;
 165     [[p_vout->p_sys->o_glview openGLContext] flushBuffer];
 166 }
 167
 168 /*****************************************************************************
 169  * cocoaglvoutviewLock
 170  *****************************************************************************/
 171 int cocoaglvoutviewLock( vout_thread_t * p_vout )
 172 {
 173     if( kCGLNoError == CGLLockContext([[p_vout->p_sys->o_glview openGLContext] CGLContextObj]) )
 174     {
 175         [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
 176         return 0;
 177     }
 178     return 1;
 179 }
 180
 181 /*****************************************************************************
 182  * cocoaglvoutviewUnlock
 183  *****************************************************************************/
 184 void cocoaglvoutviewUnlock( vout_thread_t * p_vout )
 185 {
 186     CGLUnlockContext([[p_vout->p_sys->o_glview openGLContext] CGLContextObj]);
 187 }
 188
 189 /*****************************************************************************
 190  * VLCOpenGLVoutView implementation
 191  *****************************************************************************/
 192 @implementation VLCOpenGLVoutView
 193
 194 /* Init a new gl view and register it to both the framework and the
 195  * vout_thread_t. Must be called from main thread. */
 196 + (void) autoinitOpenGLVoutViewIntVoutWithContainer: (NSData *) argsAsData
 197 {
 198     NSAutoreleasePool   *pool = [[NSAutoreleasePool alloc] init];
 199     struct args { vout_thread_t * p_vout; id <VLCOpenGLVoutEmbedding> container; } *
 200         args = (struct args *)[argsAsData bytes];
 201     VLCOpenGLVoutView * oglview;
 202
 203     if( !args->container )
 204     {
 205         args->container = [[VLCMinimalVoutWindow alloc] initWithContentRect: NSMakeRect( 0, 0, args->p_vout->i_window_width, args->p_vout->i_window_height )];
 206         [(VLCMinimalVoutWindow *)args->container makeKeyAndOrderFront: nil];
 207     }
 208     oglview = [[VLCOpenGLVoutView alloc] initWithVout: args->p_vout container: args->container];
 209
 210     args->p_vout->p_sys->o_glview = oglview;
 211     [args->container addVoutSubview: oglview];
 212
 213     [pool release];
 214 }
 215
 216 - (void)dealloc
 217 {
 218     [objectLock dealloc];
 219     [super dealloc];
 220 }
 221
 222 - (void)removeFromSuperview
 223 {
 224     [super removeFromSuperview];
 225 }
 226
 227
 228 - (id) initWithVout: (vout_thread_t *) vout container: (id <VLCOpenGLVoutEmbedding>) aContainer
 229 {
 230     NSOpenGLPixelFormatAttribute attribs[] =
 231     {
 232         NSOpenGLPFADoubleBuffer,
 233         NSOpenGLPFAAccelerated,
 234         NSOpenGLPFANoRecovery,
 235         NSOpenGLPFAColorSize, 24,
 236         NSOpenGLPFAAlphaSize, 8,
 237         NSOpenGLPFADepthSize, 24,
 238         NSOpenGLPFAWindow,
 239         0
 240     };
 241
 242     NSOpenGLPixelFormat * fmt = [[NSOpenGLPixelFormat alloc]
 243         initWithAttributes: attribs];
 244
 245     if( !fmt )
 246     {
 247         msg_Warn( p_vout, "could not create OpenGL video output" );
 248         return nil;
 249     }
 250
 251     if( self = [super initWithFrame: NSMakeRect(0,0,10,10) pixelFormat: fmt] )
 252     {
 253         p_vout = vout;
 254         container = aContainer;
 255         objectLock = [[NSLock alloc] init];
 256
 257         [fmt release];
 258
 259         [[self openGLContext] makeCurrentContext];
 260         [[self openGLContext] update];
 261
 262         /* Swap buffers only during the vertical retrace of the monitor.
 263         http://developer.apple.com/documentation/GraphicsImaging/
 264         Conceptual/OpenGL/chap5/chapter_5_section_44.html */
 265         GLint params[] = { 1 };
 266         CGLSetParameter( CGLGetCurrentContext(), kCGLCPSwapInterval,
 267                      params );
 268     }
 269     return self;
 270 }
 271
 272 - (void) detachFromVout
 273 {
 274     [objectLock lock];
 275     p_vout = NULL;
 276     [objectLock unlock];
 277 }
 278
 279 - (id <VLCOpenGLVoutEmbedding>) container
 280 {
 281     return container;
 282 }
 283
 284 - (void) destroyVout
 285 {
 286     [objectLock lock];
 287     if( p_vout )
 288     {
 289         vlc_object_detach( p_vout );
 290         vlc_object_release( p_vout );
 291         vlc_object_release( p_vout );
 292     }
 293     [objectLock unlock];
 294 }
 295
 296 - (void) reshape
 297 {
 298     int x, y;
 299     vlc_value_t val;
 300
 301     [objectLock lock];
 302     if( !p_vout )
 303     {
 304         [objectLock unlock];
 305         return;
 306     }
 307
 308     cocoaglvoutviewLock( p_vout );
 309     NSRect bounds = [self bounds];
 310
 311     if( [[self container] stretchesVideo] )
 312     {
 313         x = bounds.size.width;
 314         y = bounds.size.height;
 315     }
 316     else if( bounds.size.height * p_vout->fmt_in.i_visible_width *
 317              p_vout->fmt_in.i_sar_num <
 318              bounds.size.width * p_vout->fmt_in.i_visible_height *
 319              p_vout->fmt_in.i_sar_den )
 320     {
 321         x = ( bounds.size.height * p_vout->fmt_in.i_visible_width *
 322               p_vout->fmt_in.i_sar_num ) /
 323             ( p_vout->fmt_in.i_visible_height * p_vout->fmt_in.i_sar_den);
 324
 325         y = bounds.size.height;
 326     }
 327     else
 328     {
 329         x = bounds.size.width;
 330         y = ( bounds.size.width * p_vout->fmt_in.i_visible_height *
 331               p_vout->fmt_in.i_sar_den) /
 332             ( p_vout->fmt_in.i_visible_width * p_vout->fmt_in.i_sar_num  );
 333     }
 334
 335     glViewport( ( bounds.size.width - x ) / 2,
 336                 ( bounds.size.height - y ) / 2, x, y );
 337
 338     if( p_vout->p_sys->b_got_frame )
 339     {
 340         /* Ask the opengl module to redraw */
 341         vout_thread_t * p_parent;
 342         p_parent = (vout_thread_t *) p_vout->p_parent;
 343         cocoaglvoutviewUnlock( p_vout );
 344         if( p_parent && p_parent->pf_display )
 345         {
 346             p_parent->pf_display( p_parent, NULL );
 347         }
 348     }
 349     else
 350     {
 351         glClear( GL_COLOR_BUFFER_BIT );
 352         cocoaglvoutviewUnlock( p_vout );
 353     }
 354     [objectLock unlock];
 355     [super reshape];
 356 }
 357
 358 - (void) update
 359 {
 360     if( kCGLNoError != CGLLockContext([[self openGLContext] CGLContextObj]) )
 361         return;
 362     [super update];
 363     CGLUnlockContext([[p_vout->p_sys->o_glview openGLContext] CGLContextObj]);
 364 }
 365
 366 - (void) drawRect: (NSRect) rect
 367 {
 368     if( kCGLNoError != CGLLockContext([[self openGLContext] CGLContextObj]) )
 369         return;
 370     [[self openGLContext] flushBuffer];
 371     [super drawRect:rect];
 372     CGLUnlockContext([[p_vout->p_sys->o_glview openGLContext] CGLContextObj]);
 373 }
 374
 375 - (BOOL)mouseDownCanMoveWindow
 376 {
 377     return YES;
 378 }
 379 @end
 380