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 VideoLAN
   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)initWithFrame: (NSRect) frame vout: (vout_thread_t*) p_vout;
  52
  53 @end
  54
  55
  56 struct vout_sys_t
  57 {
  58     NSAutoreleasePool * o_pool;
  59     VLCWindow         * o_window;
  60     VLCGLView         * o_glview;
  61     vlc_bool_t          b_saved_frame;
  62     NSRect              s_frame;
  63     vlc_bool_t          b_got_frame;
  64     vlc_mutex_t         lock;
  65 };
  66
  67 /*****************************************************************************
  68  * Local prototypes
  69  *****************************************************************************/
  70
  71 static int  Init   ( vout_thread_t * p_vout );
  72 static void End    ( vout_thread_t * p_vout );
  73 static int  Manage ( vout_thread_t * p_vout );
  74 static int  Control( vout_thread_t *, int, va_list );
  75 static void Swap   ( vout_thread_t * p_vout );
  76 static int  Lock   ( vout_thread_t * p_vout );
  77 static void Unlock ( vout_thread_t * p_vout );
  78
  79 int E_(OpenVideoGL)  ( vlc_object_t * p_this )
  80 {
  81     vout_thread_t * p_vout = (vout_thread_t *) p_this;
  82
  83     if( !CGDisplayUsesOpenGLAcceleration( kCGDirectMainDisplay ) )
  84     {
  85         msg_Warn( p_vout, "no hardware acceleration" );
  86         return( 1 );
  87     }
  88     msg_Dbg( p_vout, "display is Quartz Extreme accelerated" );
  89
  90     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
  91     if( p_vout->p_sys == NULL )
  92     {
  93         msg_Err( p_vout, "out of memory" );
  94         return( 1 );
  95     }
  96
  97     memset( p_vout->p_sys, 0, sizeof( vout_sys_t ) );
  98
  99     p_vout->p_sys->o_pool = [[NSAutoreleasePool alloc] init];
 100     vlc_mutex_init( p_vout, &p_vout->p_sys->lock );
 101
 102     /* Spawn window */
 103     p_vout->p_sys->b_got_frame = VLC_FALSE;
 104     p_vout->p_sys->o_window = [[VLCWindow alloc] initWithVout: p_vout
 105                                                  frame: nil];
 106     if( !p_vout->p_sys->o_window )
 107     {
 108         return VLC_EGENERIC;
 109     }
 110
 111     /* Add OpenGL view */
 112 #define o_glview p_vout->p_sys->o_glview
 113     o_glview = [[VLCGLView alloc] initWithFrame:
 114                 [p_vout->p_sys->o_window frame] vout: p_vout];
 115     [p_vout->p_sys->o_window setContentView: o_glview];
 116     [o_glview autorelease];
 117 #undef o_glview
 118
 119     p_vout->pf_init   = Init;
 120     p_vout->pf_end    = End;
 121     p_vout->pf_manage = Manage;
 122     p_vout->pf_control= Control;
 123     p_vout->pf_swap   = Swap;
 124     p_vout->pf_lock   = Lock;
 125     p_vout->pf_unlock = Unlock;
 126
 127     return VLC_SUCCESS;
 128 }
 129
 130 void E_(CloseVideoGL) ( vlc_object_t * p_this )
 131 {
 132     vout_thread_t * p_vout = (vout_thread_t *) p_this;
 133     NSAutoreleasePool *o_pool = [[NSAutoreleasePool alloc] init];
 134
 135     /* Remove the GLView from the window, because we are not sure OS X
 136        will actually close the window right away. When it doesn't,
 137        VLCGLView's reshape is called while p_vout and p_vout->p_sys
 138        aren't valid anymore and crashes. */
 139     [p_vout->p_sys->o_window setContentView: NULL];
 140
 141     /* Close the window */
 142     [p_vout->p_sys->o_window close];
 143
 144     /* Clean up */
 145     vlc_mutex_destroy( &p_vout->p_sys->lock );
 146     [o_pool release];
 147     free( p_vout->p_sys );
 148 }
 149
 150 static int Init( vout_thread_t * p_vout )
 151 {
 152     [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
 153     return VLC_SUCCESS;
 154 }
 155
 156 static void End( vout_thread_t * p_vout )
 157 {
 158     [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
 159 }
 160
 161 static int Manage( vout_thread_t * p_vout )
 162 {
 163     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
 164     {
 165         NSAutoreleasePool *o_pool = [[NSAutoreleasePool alloc] init];
 166
 167         if( !p_vout->b_fullscreen )
 168         {
 169             /* Save window size and position */
 170             p_vout->p_sys->s_frame.size =
 171                 [[p_vout->p_sys->o_window contentView] frame].size;
 172             p_vout->p_sys->s_frame.origin =
 173                 [p_vout->p_sys->o_window frame].origin;
 174             p_vout->p_sys->b_saved_frame = VLC_TRUE;
 175         }
 176         [p_vout->p_sys->o_window close];
 177
 178         p_vout->b_fullscreen = !p_vout->b_fullscreen;
 179
 180         if( p_vout->p_sys->b_saved_frame )
 181         {
 182             p_vout->p_sys->o_window = [[VLCWindow alloc]
 183                 initWithVout: p_vout frame: &p_vout->p_sys->s_frame];
 184         }
 185         else
 186         {
 187             p_vout->p_sys->o_window = [[VLCWindow alloc]
 188                 initWithVout: p_vout frame: nil];
 189         }
 190
 191 #define o_glview p_vout->p_sys->o_glview
 192         o_glview = [[VLCGLView alloc] initWithFrame: [p_vout->p_sys->o_window frame] vout: p_vout];
 193         [p_vout->p_sys->o_window setContentView: o_glview];
 194         [o_glview autorelease];
 195         [[o_glview openGLContext] makeCurrentContext];
 196 #undef o_glview
 197         [o_pool release];
 198
 199         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 200     }
 201     [p_vout->p_sys->o_window manage];
 202     return VLC_SUCCESS;
 203 }
 204
 205 /*****************************************************************************
 206  * Control: control facility for the vout
 207  *****************************************************************************/
 208 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
 209 {
 210     vlc_bool_t b_arg;
 211
 212     switch( i_query )
 213     {
 214         case VOUT_SET_STAY_ON_TOP:
 215             b_arg = va_arg( args, vlc_bool_t );
 216             [p_vout->p_sys->o_window setOnTop: b_arg];
 217             return VLC_SUCCESS;
 218
 219         case VOUT_CLOSE:
 220         case VOUT_REPARENT:
 221         default:
 222             return vout_vaControlDefault( p_vout, i_query, args );
 223     }
 224 }
 225
 226 static void Swap( vout_thread_t * p_vout )
 227 {
 228     p_vout->p_sys->b_got_frame = VLC_TRUE;
 229     [[p_vout->p_sys->o_glview openGLContext] makeCurrentContext];
 230     glFlush();
 231 }
 232
 233 static int Lock( vout_thread_t * p_vout )
 234 {
 235     vlc_mutex_lock( &p_vout->p_sys->lock );
 236     return 0;
 237 }
 238
 239 static void Unlock( vout_thread_t * p_vout )
 240 {
 241     vlc_mutex_unlock( &p_vout->p_sys->lock );
 242 }
 243
 244 /*****************************************************************************
 245  * VLCGLView implementation
 246  *****************************************************************************/
 247 @implementation VLCGLView
 248
 249 - (id) initWithFrame: (NSRect) frame vout: (vout_thread_t*) _p_vout
 250 {
 251     p_vout = _p_vout;
 252
 253     NSOpenGLPixelFormatAttribute attribs[] =
 254     {
 255         NSOpenGLPFAAccelerated,
 256         NSOpenGLPFANoRecovery,
 257         NSOpenGLPFAColorSize, 24,
 258         NSOpenGLPFAAlphaSize, 8,
 259         NSOpenGLPFADepthSize, 24,
 260         NSOpenGLPFAWindow,
 261         0
 262     };
 263
 264     NSOpenGLPixelFormat * fmt = [[NSOpenGLPixelFormat alloc]
 265         initWithAttributes: attribs];
 266
 267     if( !fmt )
 268     {
 269         msg_Warn( p_vout, "Cannot create NSOpenGLPixelFormat" );
 270         return nil;
 271     }
 272
 273     self = [super initWithFrame:frame pixelFormat: fmt];
 274     [fmt release];
 275
 276     [[self openGLContext] makeCurrentContext];
 277     [[self openGLContext] update];
 278
 279     /* Swap buffers only during the vertical retrace of the monitor.
 280        http://developer.apple.com/documentation/GraphicsImaging/
 281        Conceptual/OpenGL/chap5/chapter_5_section_44.html */
 282     long params[] = { 1 };
 283     CGLSetParameter( CGLGetCurrentContext(), kCGLCPSwapInterval,
 284                      params );
 285     return self;
 286 }
 287
 288 - (void) reshape
 289 {
 290     int x, y;
 291     vlc_value_t val;
 292     NSRect bounds = [self bounds];
 293
 294     [[self openGLContext] makeCurrentContext];
 295
 296     var_Get( p_vout, "macosx-stretch", &val );
 297     if( val.b_bool )
 298     {
 299         x = bounds.size.width;
 300         y = bounds.size.height;
 301     }
 302     else if( bounds.size.height * p_vout->render.i_aspect <
 303              bounds.size.width * VOUT_ASPECT_FACTOR )
 304     {
 305         x = bounds.size.height * p_vout->render.i_aspect / VOUT_ASPECT_FACTOR;
 306         y = bounds.size.height;
 307     }
 308     else
 309     {
 310         x = bounds.size.width;
 311         y = bounds.size.width * VOUT_ASPECT_FACTOR / p_vout->render.i_aspect;
 312     }
 313
 314     Lock( p_vout );
 315     glViewport( ( bounds.size.width - x ) / 2,
 316                 ( bounds.size.height - y ) / 2, x, y );
 317     Unlock( p_vout );
 318
 319     if( p_vout->p_sys->b_got_frame )
 320     {
 321         /* Ask the opengl module to redraw */
 322         vout_thread_t * p_parent;
 323         p_parent = (vout_thread_t *) p_vout->p_parent;
 324         if( p_parent && p_parent->pf_display )
 325         {
 326             p_parent->pf_display( p_parent, NULL );
 327         }
 328     }
 329     else
 330     {
 331         Lock( p_vout );
 332         glClear( GL_COLOR_BUFFER_BIT );
 333         Unlock( p_vout );
 334     }
 335 }
 336
 337 - (void) drawRect: (NSRect) rect
 338 {
 339     [[self openGLContext] makeCurrentContext];
 340     Lock( p_vout );
 341     glFlush();
 342     Unlock( p_vout );
 343 }
 344
 345 @end
 346
 347