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  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  26  *****************************************************************************/
  27
  28 /*****************************************************************************
  29  * Preamble
  30  *****************************************************************************/
  31 #include <errno.h>                                                 /* ENOMEM */
  32 #include <stdlib.h>                                                /* free() */
  33 #include <string.h>                                            /* strerror() */
  34
  35 #include <vlc_keys.h>
  36
  37 #include "intf.h"
  38 #include "vout.h"
  39
  40 #include <OpenGL/OpenGL.h>
  41 #include <OpenGL/gl.h>
  42
  43 /*****************************************************************************
  44  * VLCView interface
  45  *****************************************************************************/
  46 @interface VLCGLView : NSOpenGLView
  47 {
  48     vout_thread_t * p_vout;
  49 }
  50
  51 - (id) initWithVout: (vout_thread_t *) p_vout;
  52 @end
  53
  54 struct vout_sys_t
  55 {
  56     NSAutoreleasePool * o_pool;
  57     VLCWindow         * o_window;
  58     VLCGLView         * o_glview;
  59     vlc_bool_t          b_saved_frame;
  60     NSRect              s_frame;
  61     vlc_bool_t          b_got_frame;
  62     vlc_mutex_t         lock;
  63 };
  64
  65 /*****************************************************************************
  66  * Local prototypes
  67  *****************************************************************************/
  68
  69 static int  Init   ( vout_thread_t * p_vout );
  70 static void End    ( vout_thread_t * p_vout );
  71 static int  Manage ( vout_thread_t * p_vout );
  72 static int  Control( vout_thread_t *, int, va_list );
  73 static void Swap   ( vout_thread_t * p_vout );
  74 static int  Lock   ( vout_thread_t * p_vout );
  75 static void Unlock ( vout_thread_t * p_vout );
  76
  77 int E_(OpenVideoGL)  ( vlc_object_t * p_this )
  78 {
  79     vout_thread_t * p_vout = (vout_thread_t *) p_this;
  80
  81     if( !CGDisplayUsesOpenGLAcceleration( kCGDirectMainDisplay ) )
  82     {
  83         msg_Warn( p_vout, "no hardware acceleration" );
  84         return( 1 );
  85     }
  86     msg_Dbg( p_vout, "display is Quartz Extreme accelerated" );
  87
  88     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
  89     if( p_vout->p_sys == NULL )
  90     {
  91         msg_Err( p_vout, "out of memory" );
  92         return( 1 );
  93     }
  94
  95     memset( p_vout->p_sys, 0, sizeof( vout_sys_t ) );
  96
  97     p_vout->p_sys->o_pool = [[NSAutoreleasePool alloc] init];
  98     vlc_mutex_init( p_vout, &p_vout->p_sys->lock );
  99
 100     /* Create the GL view */
 101     p_vout->p_sys->o_glview = [[VLCGLView alloc] initWithVout: p_vout];
 102     [p_vout->p_sys->o_glview autorelease];
 103
 104     /* Spawn the window */
 105     p_vout->p_sys->b_got_frame = VLC_FALSE;
 106     p_vout->p_sys->o_window = [[VLCWindow alloc] initWithVout: p_vout
 107         view: p_vout->p_sys->o_glview frame: nil];
 108     if( !p_vout->p_sys->o_window )
 109     {
 110         return VLC_EGENERIC;
 111     }
 112
 113     p_vout->pf_init   = Init;
 114     p_vout->pf_end    = End;
 115     p_vout->pf_manage = Manage;
 116     p_vout->pf_control= Control;
 117     p_vout->pf_swap   = Swap;
 118     p_vout->pf_lock   = Lock;
 119     p_vout->pf_unlock = Unlock;
 120
 121     return VLC_SUCCESS;
 122 }
 123
 124 void E_(CloseVideoGL) ( vlc_object_t * p_this )
 125 {
 126     vout_thread_t * p_vout = (vout_thread_t *) p_this;
 127     NSAutoreleasePool *o_pool = [[NSAutoreleasePool alloc] init];
 128
 129     /* Close the window */
 130     [p_vout->p_sys->o_window close];
 131
 132     /* Clean up */
 133     vlc_mutex_destroy( &p_vout->p_sys->lock );
 134     [o_pool release];
 135     free( p_vout->p_sys );
 136 }
 137
 138 static int Init( vout_thread_t * p_vout )
 139 {
 140     [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
 141     return VLC_SUCCESS;
 142 }
 143
 144 static void End( vout_thread_t * p_vout )
 145 {
 146     [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
 147 }
 148
 149 static int Manage( vout_thread_t * p_vout )
 150 {
 151     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 152     {
 153         NSAutoreleasePool *o_pool = [[NSAutoreleasePool alloc] init];
 154
 155         if( !p_vout->b_fullscreen )
 156         {
 157             /* Save window size and position */
 158             p_vout->p_sys->s_frame.size =
 159                 [[p_vout->p_sys->o_window contentView] frame].size;
 160             p_vout->p_sys->s_frame.origin =
 161                 [p_vout->p_sys->o_window frame].origin;
 162             p_vout->p_sys->b_saved_frame = VLC_TRUE;
 163         }
 164         [p_vout->p_sys->o_window close];
 165
 166         p_vout->b_fullscreen = !p_vout->b_fullscreen;
 167
 168 #define o_glview p_vout->p_sys->o_glview
 169         o_glview = [[VLCGLView alloc] initWithVout: p_vout];
 170         [o_glview autorelease];
 171
 172         if( p_vout->p_sys->b_saved_frame )
 173         {
 174             p_vout->p_sys->o_window = [[VLCWindow alloc]
 175                 initWithVout: p_vout view: o_glview
 176                 frame: &p_vout->p_sys->s_frame];
 177         }
 178         else
 179         {
 180             p_vout->p_sys->o_window = [[VLCWindow alloc]
 181                 initWithVout: p_vout view: o_glview frame: nil];
 182         }
 183
 184         [[o_glview openGLContext] makeCurrentContext];
 185 #undef o_glview
 186
 187         [o_pool release];
 188
 189         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 190     }
 191     [p_vout->p_sys->o_window manage];
 192     return VLC_SUCCESS;
 193 }
 194
 195 /*****************************************************************************
 196  * Control: control facility for the vout
 197  *****************************************************************************/
 198 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
 199 {
 200     vlc_bool_t b_arg;
 201
 202     switch( i_query )
 203     {
 204         case VOUT_SET_STAY_ON_TOP:
 205             b_arg = va_arg( args, vlc_bool_t );
 206             [p_vout->p_sys->o_window setOnTop: b_arg];
 207             return VLC_SUCCESS;
 208
 209         case VOUT_CLOSE:
 210         case VOUT_REPARENT:
 211         default:
 212             return vout_vaControlDefault( p_vout, i_query, args );
 213     }
 214 }
 215
 216 static void Swap( vout_thread_t * p_vout )
 217 {
 218     p_vout->p_sys->b_got_frame = VLC_TRUE;
 219     [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
 220     glFlush();
 221 }
 222
 223 static int Lock( vout_thread_t * p_vout )
 224 {
 225     vlc_mutex_lock( &p_vout->p_sys->lock );
 226     return 0;
 227 }
 228
 229 static void Unlock( vout_thread_t * p_vout )
 230 {
 231     vlc_mutex_unlock( &p_vout->p_sys->lock );
 232 }
 233
 234 /*****************************************************************************
 235  * VLCGLView implementation
 236  *****************************************************************************/
 237 @implementation VLCGLView
 238
 239 - (id) initWithVout: (vout_thread_t *) vout
 240 {
 241     p_vout = vout;
 242
 243     NSOpenGLPixelFormatAttribute attribs[] =
 244     {
 245         NSOpenGLPFAAccelerated,
 246         NSOpenGLPFANoRecovery,
 247         NSOpenGLPFAColorSize, 24,
 248         NSOpenGLPFAAlphaSize, 8,
 249         NSOpenGLPFADepthSize, 24,
 250         NSOpenGLPFAWindow,
 251         0
 252     };
 253
 254     NSOpenGLPixelFormat * fmt = [[NSOpenGLPixelFormat alloc]
 255         initWithAttributes: attribs];
 256
 257     if( !fmt )
 258     {
 259         msg_Warn( p_vout, "Cannot create NSOpenGLPixelFormat" );
 260         return nil;
 261     }
 262
 263     self = [super initWithFrame: NSMakeRect(0,0,10,10) pixelFormat: fmt];
 264     [fmt release];
 265
 266     [[self openGLContext] makeCurrentContext];
 267     [[self openGLContext] update];
 268
 269     /* Swap buffers only during the vertical retrace of the monitor.
 270        http://developer.apple.com/documentation/GraphicsImaging/
 271        Conceptual/OpenGL/chap5/chapter_5_section_44.html */
 272     long params[] = { 1 };
 273     CGLSetParameter( CGLGetCurrentContext(), kCGLCPSwapInterval,
 274                      params );
 275     return self;
 276 }
 277
 278 - (void) reshape
 279 {
 280     int x, y;
 281     vlc_value_t val;
 282
 283     Lock( p_vout );
 284     NSRect bounds = [self bounds];
 285
 286     [[self openGLContext] makeCurrentContext];
 287
 288     var_Get( p_vout, "macosx-stretch", &val );
 289     if( val.b_bool )
 290     {
 291         x = bounds.size.width;
 292         y = bounds.size.height;
 293     }
 294     else if( bounds.size.height * p_vout->render.i_aspect <
 295              bounds.size.width * VOUT_ASPECT_FACTOR )
 296     {
 297         x = bounds.size.height * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR;
 298         y = bounds.size.height;
 299     }
 300     else
 301     {
 302         x = bounds.size.width;
 303         y = bounds.size.width * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect;
 304     }
 305
 306     glViewport( ( bounds.size.width - x ) / 2,
 307                 ( bounds.size.height - y ) / 2, x, y );
 308
 309     if( p_vout->p_sys->b_got_frame )
 310     {
 311         /* Ask the opengl module to redraw */
 312         vout_thread_t * p_parent;
 313         p_parent = (vout_thread_t *) p_vout->p_parent;
 314         Unlock( p_vout );
 315         if( p_parent && p_parent->pf_display )
 316         {
 317             p_parent->pf_display( p_parent, NULL );
 318         }
 319     }
 320     else
 321     {
 322         glClear( GL_COLOR_BUFFER_BIT );
 323         Unlock( p_vout );
 324     }
 325     [super reshape];
 326 }
 327
 328 - (void) update
 329 {
 330     Lock( p_vout );
 331     [super update];
 332     Unlock( p_vout );
 333 }
 334
 335 - (void) drawRect: (NSRect) rect
 336 {
 337     Lock( p_vout );
 338     [[self openGLContext] makeCurrentContext];
 339     glFlush();
 340     [super drawRect:rect];
 341     Unlock( p_vout );
 342 }
 343
 344 @end
 345
 346