git.sesse.net Git - vlc/blob - modules/video_output/opengl.c

   1 /*****************************************************************************
   2  * opengl.c: OpenGL video output
   3  *****************************************************************************
   4  * Copyright (C) 2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Cyril Deguet <asmax@videolan.org>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *          Eric Petit <titer@m0k.org>
  10  *                  Cedric Cocquebert <cedric.cocquebert@supelec.fr>
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  25  *****************************************************************************/
  26
  27 /*****************************************************************************
  28  * Preamble
  29  *****************************************************************************/
  30 #include <errno.h>                                                 /* ENOMEM */
  31 #include <stdlib.h>                                      /* malloc(), free() */
  32 #include <string.h>
  33
  34 #include <vlc/vlc.h>
  35 #include <vlc/vout.h>
  36
  37 #ifdef __APPLE__
  38 #include <OpenGL/gl.h>
  39 #include <OpenGL/glext.h>
  40
  41 /* On OS X, use GL_TEXTURE_RECTANGLE_EXT instead of GL_TEXTURE_2D.
  42    This allows sizes which are not powers of 2 */
  43 #define VLCGL_TARGET GL_TEXTURE_RECTANGLE_EXT
  44
  45 /* OS X OpenGL supports YUV. Hehe. */
  46 #define VLCGL_FORMAT GL_YCBCR_422_APPLE
  47 #define VLCGL_TYPE   GL_UNSIGNED_SHORT_8_8_APPLE
  48 #else
  49
  50 #include <GL/gl.h>
  51 #define VLCGL_TARGET GL_TEXTURE_2D
  52
  53 /* RV16 */
  54 #ifndef GL_UNSIGNED_SHORT_5_6_5
  55 #define GL_UNSIGNED_SHORT_5_6_5 0x8363
  56 #endif
  57 //#define VLCGL_RGB_FORMAT GL_RGB
  58 //#define VLCGL_RGB_TYPE GL_UNSIGNED_SHORT_5_6_5
  59
  60 /* RV24 */
  61 //#define VLCGL_RGB_FORMAT GL_RGB
  62 //#define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
  63
  64 /* RV32 */
  65 #define VLCGL_RGB_FORMAT GL_RGBA
  66 #define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
  67
  68 /* YUY2 */
  69 #ifndef YCBCR_MESA
  70 #define YCBCR_MESA 0x8757
  71 #endif
  72 #ifndef UNSIGNED_SHORT_8_8_MESA
  73 #define UNSIGNED_SHORT_8_8_MESA 0x85BA
  74 #endif
  75 #define VLCGL_YUV_FORMAT YCBCR_MESA
  76 #define VLCGL_YUV_TYPE UNSIGNED_SHORT_8_8_MESA
  77
  78 /* Use RGB on Win32/GLX */
  79 #define VLCGL_FORMAT VLCGL_RGB_FORMAT
  80 #define VLCGL_TYPE   VLCGL_RGB_TYPE
  81 //#define VLCGL_FORMAT VLCGL_YUV_FORMAT
  82 //#define VLCGL_TYPE   VLCGL_YUV_TYPE
  83 #endif
  84
  85 #ifndef GL_CLAMP_TO_EDGE
  86 #   define GL_CLAMP_TO_EDGE 0x812F
  87 #endif
  88
  89 /* OpenGL effects */
  90 #define OPENGL_EFFECT_NONE             1
  91 #define OPENGL_EFFECT_CUBE             2
  92 #define OPENGL_EFFECT_TRANSPARENT_CUBE 4
  93 #if defined( HAVE_GL_GLU_H ) || defined( SYS_DARWIN )
  94     #define OPENGL_MORE_EFFECT             8
  95 #endif
  96
  97 #ifdef OPENGL_MORE_EFFECT
  98         #include <math.h>
  99         #ifdef SYS_DARWIN
 100                 #include <OpenGL/glu.h>
 101         #else
 102                 #include <GL/glu.h>
 103         #endif
 104 /* 3D MODEL */
 105         #define CYLINDER 8
 106         #define TORUS    16
 107         #define SPHERE   32
 108 /*GRID2D TRANSFORMATION */
 109         #define SQUAREXY 64
 110         #define SQUARER  128
 111         #define ASINXY   256
 112         #define ASINR    512
 113         #define SINEXY   1024
 114         #define SINER    2048
 115         #define INIFILE  4096                                   // not used, just for mark end ...
 116         #define SIGN(x)  (x < 0 ? (-1) : 1)
 117         #define PID2     1.570796326794896619231322
 118
 119         static char *ppsz_effects[] = {
 120                         "none", "cube", "transparent-cube", "cylinder", "torus", "sphere","SQUAREXY","SQUARER", "ASINXY", "ASINR", "SINEXY", "SINER" };
 121         static char *ppsz_effects_text[] = {
 122                         N_("None"), N_("Cube"), N_("Transparent Cube"),
 123                         N_("Cylinder"), N_("Torus"), N_("Sphere"), N_("SQUAREXY"),N_("SQUARER"), N_("ASINXY"), N_("ASINR"), N_("SINEXY"), N_("SINER") };
 124 #endif
 125
 126 /*****************************************************************************
 127  * Vout interface
 128  *****************************************************************************/
 129 static int  CreateVout   ( vlc_object_t * );
 130 static void DestroyVout  ( vlc_object_t * );
 131 static int  Init         ( vout_thread_t * );
 132 static void End          ( vout_thread_t * );
 133 static int  Manage       ( vout_thread_t * );
 134 static void Render       ( vout_thread_t *, picture_t * );
 135 static void DisplayVideo ( vout_thread_t *, picture_t * );
 136 static int  Control      ( vout_thread_t *, int, va_list );
 137
 138 static inline int GetAlignedSize( int );
 139
 140 static int InitTextures( vout_thread_t * );
 141 static int SendEvents( vlc_object_t *, char const *,
 142                        vlc_value_t, vlc_value_t, void * );
 143
 144 /*****************************************************************************
 145  * Module descriptor
 146  *****************************************************************************/
 147 #ifdef OPENGL_MORE_EFFECT
 148 #define ACCURACY_TEXT N_( "OpenGL sampling accuracy " )
 149 #define ACCURACY_LONGTEXT N_( "Select the accuracy of 3D object sampling(1 = min and 10 = max)" )
 150 #define RADIUS_TEXT N_( "OpenGL Cylinder radius" )
 151 #define RADIUS_LONGTEXT N_( "Radius of the OpenGL cylinder effect, if enabled" )
 152 #define POV_X_TEXT N_("Point of view x-coordinate")
 153 #define POV_X_LONGTEXT N_("Point of view (X coordinate) of the cube/cylinder "\
 154                            "effect, if enabled.")
 155 #define POV_Y_TEXT N_("Point of view y-coordinate")
 156 #define POV_Y_LONGTEXT N_("Point of view (Y coordinate) of the cube/cylinder "\
 157                            "effect, if enabled.")
 158 #define POV_Z_TEXT N_("Point of view z-coordinate")
 159 #define POV_Z_LONGTEXT N_("Point of view (Z coordinate) of the cube/cylinder "\
 160                            "effect, if enabled.")
 161 #endif
 162 #define SPEED_TEXT N_( "OpenGL cube rotation speed" )
 163 #define SPEED_LONGTEXT N_( "Rotation speed of the OpenGL cube effect, if " \
 164         "enabled." )
 165 #define EFFECT_TEXT N_("Effect")
 166 #define EFFECT_LONGTEXT N_( \
 167     "Several visual OpenGL effects are available." )
 168
 169 #ifndef OPENGL_MORE_EFFECT
 170 static char *ppsz_effects[] = {
 171         "none", "cube", "transparent-cube" };
 172 static char *ppsz_effects_text[] = {
 173         N_("None"), N_("Cube"), N_("Transparent Cube") };
 174 #endif
 175
 176 vlc_module_begin();
 177     set_shortname( "OpenGL" );
 178     set_category( CAT_VIDEO );
 179     set_subcategory( SUBCAT_VIDEO_VOUT );
 180     set_description( _("OpenGL video output") );
 181 #ifdef __APPLE__
 182     set_capability( "video output", 200 );
 183 #else
 184     set_capability( "video output", 20 );
 185 #endif
 186     add_shortcut( "opengl" );
 187     add_float( "opengl-cube-speed", 2.0, NULL, SPEED_TEXT,
 188                     SPEED_LONGTEXT, VLC_TRUE );
 189 #ifdef OPENGL_MORE_EFFECT
 190     add_integer_with_range( "opengl-accuracy", 4, 1, 10, NULL, ACCURACY_TEXT,
 191                     ACCURACY_LONGTEXT, VLC_TRUE );
 192     add_float_with_range( "opengl-pov-x", 0.0, -1.0, 1.0, NULL, POV_X_TEXT,
 193                     POV_X_LONGTEXT, VLC_TRUE );
 194     add_float_with_range( "opengl-pov-y", 0.0, -1.0, 1.0, NULL, POV_Y_TEXT,
 195                     POV_Y_LONGTEXT, VLC_TRUE );
 196     add_float_with_range( "opengl-pov-z", -1.0, -1.0, 1.0, NULL, POV_Z_TEXT,
 197                     POV_Z_LONGTEXT, VLC_TRUE );
 198     add_float( "opengl-cylinder-radius", -100.0, NULL, RADIUS_TEXT,
 199                     RADIUS_LONGTEXT, VLC_TRUE );
 200
 201 #endif
 202     set_callbacks( CreateVout, DestroyVout );
 203     add_string( "opengl-effect", "none", NULL, EFFECT_TEXT,
 204                  EFFECT_LONGTEXT, VLC_FALSE );
 205                 change_string_list( ppsz_effects, ppsz_effects_text, 0 );
 206 vlc_module_end();
 207
 208 /*****************************************************************************
 209  * vout_sys_t: video output method descriptor
 210  *****************************************************************************
 211  * This structure is part of the video output thread descriptor.
 212  * It describes the OpenGL specific properties of the output thread.
 213  *****************************************************************************/
 214 struct vout_sys_t
 215 {
 216     vout_thread_t *p_vout;
 217
 218     uint8_t    *pp_buffer[2];
 219     int         i_index;
 220     int         i_tex_width;
 221     int         i_tex_height;
 222     GLuint      p_textures[2];
 223
 224     int         i_effect;
 225
 226     float       f_speed;
 227     float       f_radius;
 228 };
 229
 230 /*****************************************************************************
 231  * CreateVout: This function allocates and initializes the OpenGL vout method.
 232  *****************************************************************************/
 233 static int CreateVout( vlc_object_t *p_this )
 234 {
 235     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 236     vout_sys_t *p_sys;
 237
 238     /* Allocate structure */
 239     p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
 240     if( p_sys == NULL )
 241     {
 242         msg_Err( p_vout, "out of memory" );
 243         return VLC_EGENERIC;
 244     }
 245
 246     var_Create( p_vout, "opengl-effect", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 247
 248     p_sys->i_index = 0;
 249 #ifdef __APPLE__
 250     p_sys->i_tex_width  = p_vout->fmt_in.i_width;
 251     p_sys->i_tex_height = p_vout->fmt_in.i_height;
 252 #else
 253     /* A texture must have a size aligned on a power of 2 */
 254     p_sys->i_tex_width  = GetAlignedSize( p_vout->fmt_in.i_width );
 255     p_sys->i_tex_height = GetAlignedSize( p_vout->fmt_in.i_height );
 256 #endif
 257
 258     msg_Dbg( p_vout, "Texture size: %dx%d", p_sys->i_tex_width,
 259              p_sys->i_tex_height );
 260
 261     /* Get window */
 262     p_sys->p_vout =
 263         (vout_thread_t *)vlc_object_create( p_this, VLC_OBJECT_OPENGL );
 264     if( p_sys->p_vout == NULL )
 265     {
 266         msg_Err( p_vout, "out of memory" );
 267         return VLC_ENOMEM;
 268     }
 269     vlc_object_attach( p_sys->p_vout, p_this );
 270
 271     p_sys->p_vout->i_window_width = p_vout->i_window_width;
 272     p_sys->p_vout->i_window_height = p_vout->i_window_height;
 273     p_sys->p_vout->b_fullscreen = p_vout->b_fullscreen;
 274     p_sys->p_vout->render.i_width = p_vout->render.i_width;
 275     p_sys->p_vout->render.i_height = p_vout->render.i_height;
 276     p_sys->p_vout->render.i_aspect = p_vout->render.i_aspect;
 277     p_sys->p_vout->fmt_render = p_vout->fmt_render;
 278     p_sys->p_vout->fmt_in = p_vout->fmt_in;
 279     p_sys->p_vout->b_scale = p_vout->b_scale;
 280     p_sys->p_vout->i_alignment = p_vout->i_alignment;
 281
 282     p_sys->p_vout->p_module =
 283         module_Need( p_sys->p_vout, "opengl provider", NULL, 0 );
 284     if( p_sys->p_vout->p_module == NULL )
 285     {
 286         msg_Warn( p_vout, "No OpenGL provider found" );
 287         vlc_object_detach( p_sys->p_vout );
 288         vlc_object_destroy( p_sys->p_vout );
 289         return VLC_ENOOBJ;
 290     }
 291
 292     p_sys->f_speed = var_CreateGetFloat( p_vout, "opengl-cube-speed" );
 293     p_sys->f_radius = var_CreateGetFloat( p_vout, "opengl-cylinder-radius" );
 294
 295     p_vout->pf_init = Init;
 296     p_vout->pf_end = End;
 297     p_vout->pf_manage = Manage;
 298     p_vout->pf_render = Render;
 299     p_vout->pf_display = DisplayVideo;
 300     p_vout->pf_control = Control;
 301
 302     /* Forward events from the opengl provider */
 303     var_Create( p_sys->p_vout, "mouse-x", VLC_VAR_INTEGER );
 304     var_Create( p_sys->p_vout, "mouse-y", VLC_VAR_INTEGER );
 305     var_Create( p_sys->p_vout, "mouse-moved/", VLC_VAR_BOOL );
 306     var_Create( p_sys->p_vout, "mouse-clicked", VLC_VAR_INTEGER );
 307     var_Create( p_sys->p_vout, "mouse-button-down", VLC_VAR_INTEGER );
 308     var_Create( p_sys->p_vout, "video-on-top",
 309                 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
 310
 311     var_AddCallback( p_sys->p_vout, "mouse-x", SendEvents, p_vout );
 312     var_AddCallback( p_sys->p_vout, "mouse-y", SendEvents, p_vout );
 313     var_AddCallback( p_sys->p_vout, "mouse-moved", SendEvents, p_vout );
 314     var_AddCallback( p_sys->p_vout, "mouse-clicked", SendEvents, p_vout );
 315     var_AddCallback( p_sys->p_vout, "mouse-button-down", SendEvents, p_vout );
 316
 317     return VLC_SUCCESS;
 318 }
 319
 320 /*****************************************************************************
 321  * Init: initialize the OpenGL video thread output method
 322  *****************************************************************************/
 323 static int Init( vout_thread_t *p_vout )
 324 {
 325     vout_sys_t *p_sys = p_vout->p_sys;
 326     int i_pixel_pitch;
 327     vlc_value_t val;
 328
 329     p_sys->p_vout->pf_init( p_sys->p_vout );
 330
 331 /* TODO: We use YCbCr on Mac which is Y422, but on OSX it seems to == YUY2. Verify */
 332 #if ( defined( WORDS_BIGENDIAN ) && VLCGL_FORMAT == GL_YCBCR_422_APPLE ) || (VLCGL_FORMAT == YCBCR_MESA)
 333     p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
 334     i_pixel_pitch = 2;
 335
 336 #elif (VLCGL_FORMAT == GL_YCBCR_422_APPLE)
 337     p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
 338     i_pixel_pitch = 2;
 339
 340 #elif VLCGL_FORMAT == GL_RGB
 341 #   if VLCGL_TYPE == GL_UNSIGNED_BYTE
 342     p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
 343 #       if defined( WORDS_BIGENDIAN )
 344     p_vout->output.i_rmask = 0x00ff0000;
 345     p_vout->output.i_gmask = 0x0000ff00;
 346     p_vout->output.i_bmask = 0x000000ff;
 347 #       else
 348     p_vout->output.i_rmask = 0x000000ff;
 349     p_vout->output.i_gmask = 0x0000ff00;
 350     p_vout->output.i_bmask = 0x00ff0000;
 351 #       endif
 352     i_pixel_pitch = 3;
 353 #   else
 354     p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
 355 #       if defined( WORDS_BIGENDIAN )
 356     p_vout->output.i_rmask = 0x001f;
 357     p_vout->output.i_gmask = 0x07e0;
 358     p_vout->output.i_bmask = 0xf800;
 359 #       else
 360     p_vout->output.i_rmask = 0xf800;
 361     p_vout->output.i_gmask = 0x07e0;
 362     p_vout->output.i_bmask = 0x001f;
 363 #       endif
 364     i_pixel_pitch = 2;
 365 #   endif
 366 #else
 367     p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
 368 #       if defined( WORDS_BIGENDIAN )
 369     p_vout->output.i_rmask = 0xff000000;
 370     p_vout->output.i_gmask = 0x00ff0000;
 371     p_vout->output.i_bmask = 0x0000ff00;
 372 #       else
 373     p_vout->output.i_rmask = 0x000000ff;
 374     p_vout->output.i_gmask = 0x0000ff00;
 375     p_vout->output.i_bmask = 0x00ff0000;
 376 #       endif
 377     i_pixel_pitch = 4;
 378 #endif
 379
 380     /* Since OpenGL can do rescaling for us, stick to the default
 381      * coordinates and aspect. */
 382     p_vout->output.i_width  = p_vout->render.i_width;
 383     p_vout->output.i_height = p_vout->render.i_height;
 384     p_vout->output.i_aspect = p_vout->render.i_aspect;
 385
 386     p_vout->fmt_out = p_vout->fmt_in;
 387     p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
 388
 389     /* We know the chroma, allocate one buffer which will be used
 390      * directly by the decoder */
 391     p_sys->pp_buffer[0] =
 392         malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
 393     if( !p_sys->pp_buffer[0] )
 394     {
 395         msg_Err( p_vout, "out of memory" );
 396         return -1;
 397     }
 398     p_sys->pp_buffer[1] =
 399         malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
 400     if( !p_sys->pp_buffer[1] )
 401     {
 402         msg_Err( p_vout, "out of memory" );
 403         return -1;
 404     }
 405
 406     p_vout->p_picture[0].i_planes = 1;
 407     p_vout->p_picture[0].p->p_pixels = p_sys->pp_buffer[0];
 408     p_vout->p_picture[0].p->i_lines = p_vout->output.i_height;
 409     p_vout->p_picture[0].p->i_visible_lines = p_vout->output.i_height;
 410     p_vout->p_picture[0].p->i_pixel_pitch = i_pixel_pitch;
 411     p_vout->p_picture[0].p->i_pitch = p_vout->output.i_width *
 412         p_vout->p_picture[0].p->i_pixel_pitch;
 413     p_vout->p_picture[0].p->i_visible_pitch = p_vout->output.i_width *
 414         p_vout->p_picture[0].p->i_pixel_pitch;
 415
 416     p_vout->p_picture[0].i_status = DESTROYED_PICTURE;
 417     p_vout->p_picture[0].i_type   = DIRECT_PICTURE;
 418
 419     PP_OUTPUTPICTURE[ 0 ] = &p_vout->p_picture[0];
 420
 421     I_OUTPUTPICTURES = 1;
 422
 423     if( p_sys->p_vout->pf_lock &&
 424         p_sys->p_vout->pf_lock( p_sys->p_vout ) )
 425     {
 426         msg_Warn( p_vout, "could not lock OpenGL provider" );
 427         return 0;
 428     }
 429
 430     InitTextures( p_vout );
 431
 432     glDisable(GL_BLEND);
 433     glDisable(GL_DEPTH_TEST);
 434     glDepthMask(GL_FALSE);
 435     glDisable(GL_CULL_FACE);
 436     glClear( GL_COLOR_BUFFER_BIT );
 437
 438     /* Check if the user asked for useless visual effects */
 439     var_Get( p_vout, "opengl-effect", &val );
 440     if( !val.psz_string || !strcmp( val.psz_string, "none" ))
 441     {
 442         p_sys->i_effect = OPENGL_EFFECT_NONE;
 443     }
 444     else if( !strcmp( val.psz_string, "cube" ) )
 445     {
 446         p_sys->i_effect = OPENGL_EFFECT_CUBE;
 447
 448         glEnable( GL_CULL_FACE);
 449     }
 450     else if( !strcmp( val.psz_string, "transparent-cube" ) )
 451     {
 452         p_sys->i_effect = OPENGL_EFFECT_TRANSPARENT_CUBE;
 453
 454         glDisable( GL_DEPTH_TEST );
 455         glEnable( GL_BLEND );
 456         glBlendFunc( GL_SRC_ALPHA, GL_ONE );
 457     }
 458     else
 459     {
 460 #ifdef OPENGL_MORE_EFFECT
 461                 p_sys->i_effect = 3;
 462         while (( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]) ) && (pow(2,p_sys->i_effect) < INIFILE))
 463         {
 464             p_sys->i_effect ++;
 465         }
 466                 if (pow(2,p_sys->i_effect) < INIFILE)
 467                         p_sys->i_effect = pow(2,p_sys->i_effect);
 468                 else if ( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]))
 469                 {
 470                         msg_Warn( p_vout, "no valid opengl effect provided, using "
 471                                           "\"none\"" );
 472                         p_sys->i_effect = OPENGL_EFFECT_NONE;
 473                 }
 474 #else
 475         msg_Warn( p_vout, "no valid opengl effect provided, using "
 476                   "\"none\"" );
 477         p_sys->i_effect = OPENGL_EFFECT_NONE;
 478 #endif
 479     }
 480     if( val.psz_string ) free( val.psz_string );
 481
 482     if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
 483                 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
 484     {
 485         /* Set the perpective */
 486         glMatrixMode( GL_PROJECTION );
 487         glLoadIdentity();
 488         glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
 489         glMatrixMode( GL_MODELVIEW );
 490         glLoadIdentity();
 491         glTranslatef( 0.0, 0.0, - 5.0 );
 492     }
 493 #ifdef OPENGL_MORE_EFFECT
 494         else
 495     {
 496         /* Set the perpective */
 497         glMatrixMode( GL_PROJECTION );
 498         glLoadIdentity();
 499         glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
 500         glMatrixMode( GL_MODELVIEW );
 501         glLoadIdentity();
 502         glTranslatef( 0.0, 0.0, -3.0 );
 503
 504                 float f_pov_x, f_pov_y, f_pov_z;
 505                 f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
 506                 f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
 507                 f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
 508                 gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
 509     }
 510 #endif
 511     if( p_sys->p_vout->pf_unlock )
 512     {
 513         p_sys->p_vout->pf_unlock( p_sys->p_vout );
 514     }
 515
 516     return 0;
 517 }
 518
 519 /*****************************************************************************
 520  * End: terminate GLX video thread output method
 521  *****************************************************************************/
 522 static void End( vout_thread_t *p_vout )
 523 {
 524     vout_sys_t *p_sys = p_vout->p_sys;
 525
 526     if( p_sys->p_vout->pf_lock &&
 527         p_sys->p_vout->pf_lock( p_sys->p_vout ) )
 528     {
 529         msg_Warn( p_vout, "could not lock OpenGL provider" );
 530         return;
 531     }
 532
 533     glFinish();
 534     glFlush();
 535
 536     if( p_sys->p_vout->pf_unlock )
 537     {
 538         p_sys->p_vout->pf_unlock( p_sys->p_vout );
 539     }
 540 }
 541
 542 /*****************************************************************************
 543  * Destroy: destroy GLX video thread output method
 544  *****************************************************************************
 545  * Terminate an output method created by CreateVout
 546  *****************************************************************************/
 547 static void DestroyVout( vlc_object_t *p_this )
 548 {
 549     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 550     vout_sys_t *p_sys = p_vout->p_sys;
 551
 552     module_Unneed( p_sys->p_vout, p_sys->p_vout->p_module );
 553     vlc_object_detach( p_sys->p_vout );
 554     vlc_object_destroy( p_sys->p_vout );
 555
 556     /* Free the texture buffer*/
 557     if( p_sys->pp_buffer[0] ) free( p_sys->pp_buffer[0] );
 558     if( p_sys->pp_buffer[1] ) free( p_sys->pp_buffer[1] );
 559
 560     glDeleteTextures( 2, p_sys->p_textures );
 561
 562     free( p_sys );
 563 }
 564
 565 /*****************************************************************************
 566  * Manage: handle Sys events
 567  *****************************************************************************
 568  * This function should be called regularly by video output thread. It returns
 569  * a non null value if an error occurred.
 570  *****************************************************************************/
 571 static int Manage( vout_thread_t *p_vout )
 572 {
 573     vout_sys_t *p_sys = p_vout->p_sys;
 574     int i_ret, i_fullscreen_change;
 575
 576     i_fullscreen_change = ( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE );
 577
 578     p_vout->fmt_out.i_x_offset = p_sys->p_vout->fmt_in.i_x_offset =
 579         p_vout->fmt_in.i_x_offset;
 580     p_vout->fmt_out.i_y_offset = p_sys->p_vout->fmt_in.i_y_offset =
 581         p_vout->fmt_in.i_y_offset;
 582     p_vout->fmt_out.i_visible_width = p_sys->p_vout->fmt_in.i_visible_width =
 583         p_vout->fmt_in.i_visible_width;
 584     p_vout->fmt_out.i_visible_height = p_sys->p_vout->fmt_in.i_visible_height =
 585         p_vout->fmt_in.i_visible_height;
 586     p_vout->fmt_out.i_aspect = p_sys->p_vout->fmt_in.i_aspect =
 587         p_vout->fmt_in.i_aspect;
 588     p_vout->fmt_out.i_sar_num = p_sys->p_vout->fmt_in.i_sar_num =
 589         p_vout->fmt_in.i_sar_num;
 590     p_vout->fmt_out.i_sar_den = p_sys->p_vout->fmt_in.i_sar_den =
 591         p_vout->fmt_in.i_sar_den;
 592     p_vout->output.i_aspect = p_vout->fmt_in.i_aspect;
 593
 594     p_sys->p_vout->i_changes = p_vout->i_changes;
 595     i_ret = p_sys->p_vout->pf_manage( p_sys->p_vout );
 596     p_vout->i_changes = p_sys->p_vout->i_changes;
 597
 598 #ifdef __APPLE__
 599     if( p_sys->p_vout->pf_lock &&
 600         p_sys->p_vout->pf_lock( p_sys->p_vout ) )
 601     {
 602         msg_Warn( p_vout, "could not lock OpenGL provider" );
 603         return i_ret;
 604     }
 605
 606     /* On OS X, we create the window and the GL view when entering
 607        fullscreen - the textures have to be inited again */
 608     if( i_fullscreen_change )
 609     {
 610         InitTextures( p_vout );
 611
 612         switch( p_sys->i_effect )
 613         {
 614             case OPENGL_EFFECT_CUBE:
 615 #ifdef OPENGL_MORE_EFFECT
 616                         case CYLINDER:
 617                         case TORUS:
 618                         case SPHERE:
 619                         case SQUAREXY:
 620                         case SQUARER:
 621                         case ASINXY:
 622                         case ASINR:
 623                         case SINEXY:
 624                         case SINER:
 625 #endif
 626                 glEnable( GL_CULL_FACE );
 627                 break;
 628
 629             case OPENGL_EFFECT_TRANSPARENT_CUBE:
 630                 glDisable( GL_DEPTH_TEST );
 631                 glEnable( GL_BLEND );
 632                 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
 633                 break;
 634         }
 635
 636         if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
 637                     OPENGL_EFFECT_TRANSPARENT_CUBE ) )
 638         {
 639             /* Set the perpective */
 640             glMatrixMode( GL_PROJECTION );
 641             glLoadIdentity();
 642             glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
 643             glMatrixMode( GL_MODELVIEW );
 644             glLoadIdentity();
 645             glTranslatef( 0.0, 0.0, - 5.0 );
 646         }
 647 #ifdef OPENGL_MORE_EFFECT
 648                 else
 649             {
 650                 glMatrixMode( GL_PROJECTION );
 651                 glLoadIdentity();
 652                 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
 653                 glMatrixMode( GL_MODELVIEW );
 654                 glLoadIdentity();
 655                 glTranslatef( 0.0, 0.0, -3.0 );
 656
 657                         float f_pov_x, f_pov_y, f_pov_z;
 658                         f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
 659                         f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
 660                         f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
 661                         gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
 662             }
 663 #endif
 664     }
 665
 666     if( p_sys->p_vout->pf_unlock )
 667     {
 668         p_sys->p_vout->pf_unlock( p_sys->p_vout );
 669     }
 670 #endif
 671
 672     return i_ret;
 673 }
 674
 675 /*****************************************************************************
 676  * Render: render previously calculated output
 677  *****************************************************************************/
 678 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
 679 {
 680     vout_sys_t *p_sys = p_vout->p_sys;
 681
 682     /* On Win32/GLX, we do this the usual way:
 683        + Fill the buffer with new content,
 684        + Reload the texture,
 685        + Use the texture.
 686
 687        On OS X with VRAM or AGP texturing, the order has to be:
 688        + Reload the texture,
 689        + Fill the buffer with new content,
 690        + Use the texture.
 691
 692        (Thanks to gcc from the Arstechnica forums for the tip)
 693
 694        Therefore, we have to use two buffers and textures. On Win32/GLX,
 695        we reload the texture to be displayed and use it right away. On
 696        OS X, we first render, then reload the texture to be used next
 697        time. */
 698
 699     if( p_sys->p_vout->pf_lock &&
 700         p_sys->p_vout->pf_lock( p_sys->p_vout ) )
 701     {
 702         msg_Warn( p_vout, "could not lock OpenGL provider" );
 703         return;
 704     }
 705
 706 #ifdef __APPLE__
 707     int i_new_index;
 708     i_new_index = ( p_sys->i_index + 1 ) & 1;
 709
 710
 711     /* Update the texture */
 712     glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_new_index] );
 713     glTexSubImage2D( VLCGL_TARGET, 0, 0, 0,
 714                      p_vout->fmt_out.i_width,
 715                      p_vout->fmt_out.i_height,
 716                      VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[i_new_index] );
 717
 718     /* Bind to the previous texture for drawing */
 719     glBindTexture( VLCGL_TARGET, p_sys->p_textures[p_sys->i_index] );
 720
 721     /* Switch buffers */
 722     p_sys->i_index = i_new_index;
 723     p_pic->p->p_pixels = p_sys->pp_buffer[p_sys->i_index];
 724
 725 #else
 726     /* Update the texture */
 727     glTexSubImage2D( GL_TEXTURE_2D, 0, 0, 0,
 728                      p_vout->fmt_out.i_width,
 729                      p_vout->fmt_out.i_height,
 730                      VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[0] );
 731 #endif
 732
 733     if( p_sys->p_vout->pf_unlock )
 734     {
 735         p_sys->p_vout->pf_unlock( p_sys->p_vout );
 736     }
 737 }
 738
 739
 740 #ifdef OPENGL_MORE_EFFECT
 741 /*****************************************************************************
 742  *   Transform: Calculate the distorted grid coordinates
 743  *****************************************************************************/
 744 void Transform(float p, int distortion, float width, float height,int i, int j, int i_visible_width, int i_visible_height, double *ix,double *iy)
 745 {
 746    double x,y,xnew,ynew;
 747    double r,theta,rnew,thetanew;
 748
 749    x = (double)i * (width / ((double)i_visible_width));
 750    y = (double)j * (height / ((double)i_visible_height));
 751
 752    x = (2.0 * (double)x / width) - 1;
 753    y = (2.0 * (double)y / height) - 1;
 754    xnew = x;
 755    ynew = y;
 756    r = sqrt(x*x+y*y);
 757    theta = atan2(y,x);
 758
 759    switch (distortion)
 760    {
 761 /* GRID2D TRANSFORMATION */
 762            case SINEXY:
 763                   xnew = sin(PID2*x);
 764                   ynew = sin(PID2*y);
 765                   break;
 766            case SINER:
 767                   rnew = sin(PID2*r);
 768                   thetanew = theta;
 769                   xnew = rnew * cos(thetanew);
 770                   ynew = rnew * sin(thetanew);
 771                   break;
 772            case SQUAREXY:
 773                   xnew = x*x*SIGN(x);
 774                   ynew = y*y*SIGN(y);
 775                   break;
 776            case SQUARER:
 777                   rnew = r*r;
 778                   thetanew = theta;
 779                   xnew = rnew * cos(thetanew);
 780                   ynew = rnew * sin(thetanew);
 781                   break;
 782            case ASINXY:
 783                   xnew = asin(x) / PID2;
 784                   ynew = asin(y) / PID2;
 785                   break;
 786            case ASINR:
 787                   rnew = asin(r) / PID2;
 788                   thetanew = theta;
 789                   xnew = rnew * cos(thetanew);
 790                   ynew = rnew * sin(thetanew);
 791                   break;
 792 /* OTHER WAY: 3D MODEL */
 793            default:
 794                   xnew = x;
 795                   ynew = y;
 796    }
 797
 798    *ix = width * (xnew + 1) / (2.0);
 799    *iy = height * (ynew + 1) / (2.0);
 800 }
 801
 802
 803 /*****************************************************************************
 804  *   Z_Compute: Calculate the Z-coordinate
 805  *****************************************************************************/
 806 float Z_Compute(float p, int distortion, float x, float y)
 807 {
 808   float f_z = 0.0;
 809   double d_p = p / 100.0;
 810
 811   switch (distortion)
 812    {
 813 /* 3D MODEL */
 814            case CYLINDER:
 815                   if (d_p > 0)
 816                         f_z = (1 - d_p * d_p) / (2 * d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x));
 817                   else
 818                         f_z = (1 - d_p * d_p) / (2 * d_p) + d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x));
 819                   break;
 820            case TORUS:
 821                   if (d_p > 0)
 822                     f_z =  (1 - d_p * d_p) / (d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x)) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - y * y));
 823                   else
 824                         f_z =  (1 - d_p * d_p) / (d_p) + 2 * d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x)) + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - y * y));
 825                   break;
 826            case SPHERE:
 827                   if (d_p > 0)
 828                     f_z = (1 - d_p * d_p) / (2 * d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x - y * y));
 829                   else
 830                         f_z = (1 - d_p * d_p) / (2 * d_p) + d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x - y * y));
 831                   break;
 832 /* OTHER WAY: GRID2D TRANSFORMATION */
 833            case SINEXY:;
 834            case SINER:
 835            case SQUAREXY:
 836            case SQUARER:;
 837            case ASINXY:
 838            case ASINR:
 839                   f_z = 0.0;
 840                   break;
 841            default:
 842                    f_z = 0.0;
 843    }
 844   return f_z;
 845 }
 846 #endif
 847
 848
 849 /*****************************************************************************
 850  * DisplayVideo: displays previously rendered output
 851  *****************************************************************************/
 852 static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
 853 {
 854     vout_sys_t *p_sys = p_vout->p_sys;
 855     float f_width, f_height, f_x, f_y;
 856
 857     if( p_sys->p_vout->pf_lock &&
 858         p_sys->p_vout->pf_lock( p_sys->p_vout ) )
 859     {
 860         msg_Warn( p_vout, "could not lock OpenGL provider" );
 861         return;
 862     }
 863
 864     /* glTexCoord works differently with GL_TEXTURE_2D and
 865        GL_TEXTURE_RECTANGLE_EXT */
 866 #ifdef __APPLE__
 867     f_x = (float)p_vout->fmt_out.i_x_offset;
 868     f_y = (float)p_vout->fmt_out.i_y_offset;
 869     f_width = (float)p_vout->fmt_out.i_x_offset +
 870               (float)p_vout->fmt_out.i_visible_width;
 871     f_height = (float)p_vout->fmt_out.i_y_offset +
 872                (float)p_vout->fmt_out.i_visible_height;
 873 #else
 874     f_x = (float)p_vout->fmt_out.i_x_offset / p_sys->i_tex_width;
 875     f_y = (float)p_vout->fmt_out.i_y_offset / p_sys->i_tex_height;
 876     f_width = ( (float)p_vout->fmt_out.i_x_offset +
 877                 p_vout->fmt_out.i_visible_width ) / p_sys->i_tex_width;
 878     f_height = ( (float)p_vout->fmt_out.i_y_offset +
 879                  p_vout->fmt_out.i_visible_height ) / p_sys->i_tex_height;
 880 #endif
 881
 882     /* Why drawing here and not in Render()? Because this way, the
 883        OpenGL providers can call pf_display to force redraw. Currently,
 884        the OS X provider uses it to get a smooth window resizing */
 885
 886     glClear( GL_COLOR_BUFFER_BIT );
 887
 888     if( p_sys->i_effect == OPENGL_EFFECT_NONE )
 889     {
 890         glEnable( VLCGL_TARGET );
 891         glBegin( GL_POLYGON );
 892         glTexCoord2f( f_x, f_y ); glVertex2f( -1.0, 1.0 );
 893         glTexCoord2f( f_width, f_y ); glVertex2f( 1.0, 1.0 );
 894         glTexCoord2f( f_width, f_height ); glVertex2f( 1.0, -1.0 );
 895         glTexCoord2f( f_x, f_height ); glVertex2f( -1.0, -1.0 );
 896         glEnd();
 897     }
 898     else
 899 #ifdef OPENGL_MORE_EFFECT
 900                 if ((p_sys->i_effect > OPENGL_EFFECT_TRANSPARENT_CUBE) ||
 901                         ((p_sys->i_effect == OPENGL_EFFECT_NONE)))
 902                 {
 903                    unsigned int i_i, i_j;
 904                    unsigned int i_accuracy  = config_GetInt( p_vout, "opengl-accuracy");
 905                    unsigned int i_n = pow(2, i_accuracy);
 906                    unsigned int i_n_x = (p_vout->fmt_out.i_visible_width / (i_n * 2));
 907                    unsigned int i_n_y = (p_vout->fmt_out.i_visible_height / i_n);
 908                    double d_x, d_y;
 909                    int i_distortion = p_sys->i_effect;
 910                    float f_p = p_sys->f_radius;
 911
 912                    glEnable( VLCGL_TARGET );
 913                    glBegin(GL_QUADS);
 914                    for (i_i = 0; i_i < p_vout->fmt_out.i_visible_width; i_i += i_n_x)
 915                    {
 916                           if ( i_i == i_n_x * i_n / 2) i_n_x += p_vout->fmt_out.i_visible_width % i_n;
 917                           if ((i_i == (p_vout->fmt_out.i_visible_width / i_n) * i_n / 2 + i_n_x) &&
 918                                   (p_vout->fmt_out.i_visible_width / i_n != i_n_x))
 919                                         i_n_x -= p_vout->fmt_out.i_visible_width % i_n;
 920
 921                           int i_m;
 922                           int i_index_max = 0;
 923
 924                           for (i_j = 0; i_j < p_vout->fmt_out.i_visible_height; i_j += i_n_y)
 925                           {
 926                                 if ( i_j == i_n_y * i_n / 2) i_n_y += p_vout->fmt_out.i_visible_height % i_n;
 927                                 if ((i_j == (p_vout->fmt_out.i_visible_height / i_n) * i_n / 2 + i_n_y) &&
 928                                         (p_vout->fmt_out.i_visible_height / i_n != i_n_y))
 929                                                 i_n_y -= p_vout->fmt_out.i_visible_height % i_n;
 930
 931                                 for (i_m = i_index_max; i_m < i_index_max + 4; i_m++)
 932                                 {
 933                                         int i_k = ((i_m % 4) == 1) || ((i_m % 4) == 2);
 934                                         int i_l = ((i_m % 4) == 2) || ((i_m % 4) == 3);
 935
 936                                         Transform(f_p, i_distortion, f_width, f_height, i_i + i_k * i_n_x, i_j + i_l * i_n_y, p_vout->fmt_out.i_visible_width, p_vout->fmt_out.i_visible_height, &d_x, &d_y);
 937                                         glTexCoord2f(f_x + d_x, f_y + d_y);
 938                                         d_x =  - 1.0 + 2.0 * ((double)(i_k * i_n_x + i_i) / (double)p_vout->fmt_out.i_visible_width);
 939                                         d_y =    1.0 - 2.0 * (((double)i_l * i_n_y + i_j) / (double)p_vout->fmt_out.i_visible_height);
 940                                         glVertex3f((float)d_x, (float)d_y, Z_Compute(f_p, i_distortion, (float)d_x, (float)d_y));
 941                                 }
 942                           }
 943                    }
 944                    glEnd();
 945                 }
 946                 else
 947 #endif
 948         {
 949         glRotatef( 0.5 * p_sys->f_speed , 0.3, 0.5, 0.7 );
 950
 951         glEnable( VLCGL_TARGET );
 952         glBegin( GL_QUADS );
 953
 954         /* Front */
 955         glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, 1.0 );
 956         glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, 1.0 );
 957         glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, 1.0 );
 958         glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, 1.0 );
 959
 960         /* Left */
 961         glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
 962         glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
 963         glTexCoord2f( f_width, f_height ); glVertex3f( - 1.0, - 1.0, 1.0 );
 964         glTexCoord2f( f_width, f_y ); glVertex3f( - 1.0, 1.0, 1.0 );
 965
 966         /* Back */
 967         glTexCoord2f( f_x, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
 968         glTexCoord2f( f_x, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
 969         glTexCoord2f( f_width, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
 970         glTexCoord2f( f_width, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
 971
 972         /* Right */
 973         glTexCoord2f( f_x, f_y ); glVertex3f( 1.0, 1.0, 1.0 );
 974         glTexCoord2f( f_x, f_height ); glVertex3f( 1.0, - 1.0, 1.0 );
 975         glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
 976         glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
 977
 978         /* Top */
 979         glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
 980         glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, 1.0, 1.0 );
 981         glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, 1.0, 1.0 );
 982         glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
 983
 984         /* Bottom */
 985         glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, - 1.0, 1.0 );
 986         glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
 987         glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
 988         glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, - 1.0, 1.0 );
 989         glEnd();
 990     }
 991
 992     glDisable( VLCGL_TARGET );
 993
 994     p_sys->p_vout->pf_swap( p_sys->p_vout );
 995
 996     if( p_sys->p_vout->pf_unlock )
 997     {
 998         p_sys->p_vout->pf_unlock( p_sys->p_vout );
 999     }
1000 }
1001
1002 int GetAlignedSize( int i_size )
1003 {
1004     /* Return the nearest power of 2 */
1005     int i_result = 1;
1006     while( i_result < i_size )
1007     {
1008         i_result *= 2;
1009     }
1010     return i_result;
1011 }
1012
1013 /*****************************************************************************
1014  * Control: control facility for the vout
1015  *****************************************************************************/
1016 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
1017 {
1018     vout_sys_t *p_sys = p_vout->p_sys;
1019
1020     switch( i_query )
1021     {
1022     case VOUT_SNAPSHOT:
1023         return vout_vaControlDefault( p_vout, i_query, args );
1024
1025     default:
1026         if( p_sys->p_vout->pf_control )
1027             return p_sys->p_vout->pf_control( p_sys->p_vout, i_query, args );
1028         else
1029             return vout_vaControlDefault( p_vout, i_query, args );
1030     }
1031 }
1032
1033 static int InitTextures( vout_thread_t *p_vout )
1034 {
1035     vout_sys_t *p_sys = p_vout->p_sys;
1036     int i_index;
1037
1038     glDeleteTextures( 2, p_sys->p_textures );
1039     glGenTextures( 2, p_sys->p_textures );
1040
1041     for( i_index = 0; i_index < 2; i_index++ )
1042     {
1043         glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_index] );
1044
1045         /* Set the texture parameters */
1046         glTexParameterf( VLCGL_TARGET, GL_TEXTURE_PRIORITY, 1.0 );
1047
1048         glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
1049         glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
1050
1051         glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
1052         glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
1053
1054         glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
1055
1056 #ifdef __APPLE__
1057         /* Tell the driver not to make a copy of the texture but to use
1058            our buffer */
1059         glEnable( GL_UNPACK_CLIENT_STORAGE_APPLE );
1060         glPixelStorei( GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE );
1061
1062 #if 0
1063         /* Use VRAM texturing */
1064         glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1065                          GL_STORAGE_CACHED_APPLE );
1066 #else
1067         /* Use AGP texturing */
1068         glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1069                          GL_STORAGE_SHARED_APPLE );
1070 #endif
1071 #endif
1072
1073         /* Call glTexImage2D only once, and use glTexSubImage2D later */
1074         glTexImage2D( VLCGL_TARGET, 0, 3, p_sys->i_tex_width,
1075                       p_sys->i_tex_height, 0, VLCGL_FORMAT, VLCGL_TYPE,
1076                       p_sys->pp_buffer[i_index] );
1077     }
1078
1079     return 0;
1080 }
1081
1082 /*****************************************************************************
1083  * SendEvents: forward mouse and keyboard events to the parent p_vout
1084  *****************************************************************************/
1085 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
1086                        vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
1087 {
1088     return var_Set( (vlc_object_t *)_p_vout, psz_var, newval );
1089 }