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  *          Benjamin Pracht <bigben at videolan dot org>
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  27  *****************************************************************************/
  28
  29 /*****************************************************************************
  30  * Preamble
  31  *****************************************************************************/
  32 #include <errno.h>                                                 /* ENOMEM */
  33 #include <stdlib.h>                                                /* free() */
  34 #include <string.h>                                            /* strerror() */
  35
  36 #include <vlc_keys.h>
  37
  38 #include "intf.h"
  39 #include "vout.h"
  40
  41 #include <OpenGL/OpenGL.h>
  42 #include <OpenGL/gl.h>
  43
  44 /*****************************************************************************
  45  * VLCView interface
  46  *****************************************************************************/
  47 @interface VLCGLView : NSOpenGLView
  48 {
  49     vout_thread_t * p_vout;
  50 }
  51
  52 - (id) initWithVout: (vout_thread_t *) p_vout;
  53 @end
  54
  55 struct vout_sys_t
  56 {
  57     NSAutoreleasePool * o_pool;
  58     VLCGLView         * o_glview;
  59     VLCVoutView       * o_vout_view;
  60     vlc_bool_t          b_saved_frame;
  61     NSRect              s_frame;
  62     vlc_bool_t          b_got_frame;
  63     vlc_mutex_t         lock;
  64 };
  65
  66 /*****************************************************************************
  67  * Local prototypes
  68  *****************************************************************************/
  69
  70 static int  Init   ( vout_thread_t * p_vout );
  71 static void End    ( vout_thread_t * p_vout );
  72 static int  Manage ( vout_thread_t * p_vout );
  73 static int  Control( vout_thread_t *, int, va_list );
  74 static void Swap   ( vout_thread_t * p_vout );
  75 static int  Lock   ( vout_thread_t * p_vout );
  76 static void Unlock ( vout_thread_t * p_vout );
  77
  78 int E_(OpenVideoGL)  ( vlc_object_t * p_this )
  79 {
  80     vout_thread_t * p_vout = (vout_thread_t *) p_this;
  81
  82     if( !CGDisplayUsesOpenGLAcceleration( kCGDirectMainDisplay ) )
  83     {
  84         msg_Warn( p_vout, "no hardware acceleration" );
  85         return( 1 );
  86     }
  87     msg_Dbg( p_vout, "display is Quartz Extreme accelerated" );
  88
  89     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
  90     if( p_vout->p_sys == NULL )
  91     {
  92         msg_Err( p_vout, "out of memory" );
  93         return( 1 );
  94     }
  95
  96     memset( p_vout->p_sys, 0, sizeof( vout_sys_t ) );
  97
  98     p_vout->p_sys->o_pool = [[NSAutoreleasePool alloc] init];
  99     vlc_mutex_init( p_vout, &p_vout->p_sys->lock );
 100
 101     /* Create the GL view */
 102     p_vout->p_sys->o_glview = [[VLCGLView alloc] initWithVout: p_vout];
 103     [p_vout->p_sys->o_glview autorelease];
 104
 105     /* Spawn the window */
 106
 107     if( !(p_vout->p_sys->o_vout_view = [VLCVoutView getVoutView: p_vout
 108                     subView: p_vout->p_sys->o_glview frame: nil]) )
 109     {
 110         return VLC_EGENERIC;
 111     }
 112
 113     p_vout->p_sys->b_got_frame = VLC_FALSE;
 114
 115     p_vout->pf_init   = Init;
 116     p_vout->pf_end    = End;
 117     p_vout->pf_manage = Manage;
 118     p_vout->pf_control= Control;
 119     p_vout->pf_swap   = Swap;
 120     p_vout->pf_lock   = Lock;
 121     p_vout->pf_unlock = Unlock;
 122
 123     return VLC_SUCCESS;
 124 }
 125
 126 void E_(CloseVideoGL) ( vlc_object_t * p_this )
 127 {
 128     vout_thread_t * p_vout = (vout_thread_t *) p_this;
 129     NSAutoreleasePool *o_pool = [[NSAutoreleasePool alloc] init];
 130
 131     /* Close the window */
 132     [p_vout->p_sys->o_vout_view closeVout];
 133
 134     /* Clean up */
 135     vlc_mutex_destroy( &p_vout->p_sys->lock );
 136     [o_pool release];
 137     free( p_vout->p_sys );
 138 }
 139
 140 static int Init( vout_thread_t * p_vout )
 141 {
 142     [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
 143     return VLC_SUCCESS;
 144 }
 145
 146 static void End( vout_thread_t * p_vout )
 147 {
 148     [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
 149 }
 150
 151 static int Manage( vout_thread_t * p_vout )
 152 {
 153     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 154     {
 155         NSAutoreleasePool *o_pool = [[NSAutoreleasePool alloc] init];
 156
 157         if( !p_vout->b_fullscreen )
 158         {
 159             /* Save window size and position */
 160             p_vout->p_sys->s_frame.size =
 161                 [p_vout->p_sys->o_vout_view frame].size;
 162             p_vout->p_sys->s_frame.origin =
 163                 [[p_vout->p_sys->o_vout_view getWindow ]frame].origin;
 164             p_vout->p_sys->b_saved_frame = VLC_TRUE;
 165         }
 166         [p_vout->p_sys->o_vout_view closeVout];
 167
 168         p_vout->b_fullscreen = !p_vout->b_fullscreen;
 169
 170 #define o_glview p_vout->p_sys->o_glview
 171         o_glview = [[VLCGLView alloc] initWithVout: p_vout];
 172         [o_glview autorelease];
 173
 174         if( p_vout->p_sys->b_saved_frame )
 175         {
 176             p_vout->p_sys->o_vout_view = [VLCVoutView getVoutView: p_vout
 177                         subView: o_glview
 178                         frame: &p_vout->p_sys->s_frame];
 179         }
 180         else
 181         {
 182             p_vout->p_sys->o_vout_view = [VLCVoutView getVoutView: p_vout
 183                         subView: o_glview frame: nil];
 184
 185         }
 186
 187         [[o_glview openGLContext] makeCurrentContext];
 188 #undef o_glview
 189
 190         [o_pool release];
 191
 192         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 193     }
 194     [p_vout->p_sys->o_vout_view manage];
 195     return VLC_SUCCESS;
 196 }
 197
 198 /*****************************************************************************
 199  * Control: control facility for the vout
 200  *****************************************************************************/
 201 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
 202 {
 203     vlc_bool_t b_arg;
 204
 205     switch( i_query )
 206     {
 207         case VOUT_SET_STAY_ON_TOP:
 208             b_arg = va_arg( args, vlc_bool_t );
 209             [p_vout->p_sys->o_vout_view setOnTop: b_arg];
 210             return VLC_SUCCESS;
 211
 212         case VOUT_CLOSE:
 213         case VOUT_REPARENT:
 214         default:
 215             return vout_vaControlDefault( p_vout, i_query, args );
 216     }
 217 }
 218
 219 static void Swap( vout_thread_t * p_vout )
 220 {
 221     p_vout->p_sys->b_got_frame = VLC_TRUE;
 222     [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
 223     glFlush();
 224 }
 225
 226 static int Lock( vout_thread_t * p_vout )
 227 {
 228     vlc_mutex_lock( &p_vout->p_sys->lock );
 229     return 0;
 230 }
 231
 232 static void Unlock( vout_thread_t * p_vout )
 233 {
 234     vlc_mutex_unlock( &p_vout->p_sys->lock );
 235 }
 236
 237 /*****************************************************************************
 238  * VLCGLView implementation
 239  *****************************************************************************/
 240 @implementation VLCGLView
 241
 242 - (id) initWithVout: (vout_thread_t *) vout
 243 {
 244     p_vout = vout;
 245
 246     NSOpenGLPixelFormatAttribute attribs[] =
 247     {
 248         NSOpenGLPFAAccelerated,
 249         NSOpenGLPFANoRecovery,
 250         NSOpenGLPFAColorSize, 24,
 251         NSOpenGLPFAAlphaSize, 8,
 252         NSOpenGLPFADepthSize, 24,
 253         NSOpenGLPFAWindow,
 254         0
 255     };
 256
 257     NSOpenGLPixelFormat * fmt = [[NSOpenGLPixelFormat alloc]
 258         initWithAttributes: attribs];
 259
 260     if( !fmt )
 261     {
 262         msg_Warn( p_vout, "Cannot create NSOpenGLPixelFormat" );
 263         return nil;
 264     }
 265
 266     self = [super initWithFrame: NSMakeRect(0,0,10,10) pixelFormat: fmt];
 267     [fmt release];
 268
 269     [[self openGLContext] makeCurrentContext];
 270     [[self openGLContext] update];
 271
 272     /* Swap buffers only during the vertical retrace of the monitor.
 273        http://developer.apple.com/documentation/GraphicsImaging/
 274        Conceptual/OpenGL/chap5/chapter_5_section_44.html */
 275     long params[] = { 1 };
 276     CGLSetParameter( CGLGetCurrentContext(), kCGLCPSwapInterval,
 277                      params );
 278     return self;
 279 }
 280
 281 - (void) reshape
 282 {
 283     int x, y;
 284     vlc_value_t val;
 285
 286     Lock( p_vout );
 287     NSRect bounds = [self bounds];
 288
 289     [[self openGLContext] makeCurrentContext];
 290
 291     var_Get( p_vout, "macosx-stretch", &val );
 292     if( val.b_bool )
 293     {
 294         x = bounds.size.width;
 295         y = bounds.size.height;
 296     }
 297     else if( bounds.size.height * p_vout->render.i_aspect <
 298              bounds.size.width * VOUT_ASPECT_FACTOR )
 299     {
 300         x = bounds.size.height * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR;
 301         y = bounds.size.height;
 302     }
 303     else
 304     {
 305         x = bounds.size.width;
 306         y = bounds.size.width * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect;
 307     }
 308
 309     glViewport( ( bounds.size.width - x ) / 2,
 310                 ( bounds.size.height - y ) / 2, x, y );
 311
 312     if( p_vout->p_sys->b_got_frame )
 313     {
 314         /* Ask the opengl module to redraw */
 315         vout_thread_t * p_parent;
 316         p_parent = (vout_thread_t *) p_vout->p_parent;
 317         Unlock( p_vout );
 318         if( p_parent && p_parent->pf_display )
 319         {
 320             p_parent->pf_display( p_parent, NULL );
 321         }
 322     }
 323     else
 324     {
 325         glClear( GL_COLOR_BUFFER_BIT );
 326         Unlock( p_vout );
 327     }
 328     [super reshape];
 329 }
 330
 331 - (void) update
 332 {
 333     Lock( p_vout );
 334     [super update];
 335     Unlock( p_vout );
 336 }
 337
 338 - (void) drawRect: (NSRect) rect
 339 {
 340     Lock( p_vout );
 341     [[self openGLContext] makeCurrentContext];
 342     glFlush();
 343     [super drawRect:rect];
 344     Unlock( p_vout );
 345 }
 346
 347 @end
 348
 349