1 /*****************************************************************************
2 * opengl.c: OpenGL video output
3 *****************************************************************************
4 * Copyright (C) 2004 the VideoLAN team
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>
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.
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.
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
25 *****************************************************************************/
27 /*****************************************************************************
29 *****************************************************************************/
30 #include <errno.h> /* ENOMEM */
31 #include <stdlib.h> /* malloc(), free() */
38 #include <OpenGL/gl.h>
39 #include <OpenGL/glext.h>
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
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
51 #define VLCGL_TARGET GL_TEXTURE_2D
54 #ifndef GL_UNSIGNED_SHORT_5_6_5
55 #define GL_UNSIGNED_SHORT_5_6_5 0x8363
57 //#define VLCGL_RGB_FORMAT GL_RGB
58 //#define VLCGL_RGB_TYPE GL_UNSIGNED_SHORT_5_6_5
61 //#define VLCGL_RGB_FORMAT GL_RGB
62 //#define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
65 #define VLCGL_RGB_FORMAT GL_RGBA
66 #define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
70 #define YCBCR_MESA 0x8757
72 #ifndef UNSIGNED_SHORT_8_8_MESA
73 #define UNSIGNED_SHORT_8_8_MESA 0x85BA
75 #define VLCGL_YUV_FORMAT YCBCR_MESA
76 #define VLCGL_YUV_TYPE UNSIGNED_SHORT_8_8_MESA
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
85 #ifndef GL_CLAMP_TO_EDGE
86 # define GL_CLAMP_TO_EDGE 0x812F
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
97 #ifdef OPENGL_MORE_EFFECT
100 #include <OpenGL/glu.h>
108 /*GRID2D TRANSFORMATION */
115 #define INIFILE 4096 // not used, just for mark end ...
116 #define SIGN(x) (x < 0 ? (-1) : 1)
117 #define PID2 1.570796326794896619231322
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") };
126 /*****************************************************************************
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 );
138 static inline int GetAlignedSize( int );
140 static int InitTextures( vout_thread_t * );
141 static int SendEvents( vlc_object_t *, char const *,
142 vlc_value_t, vlc_value_t, void * );
144 /*****************************************************************************
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.")
162 #define SPEED_TEXT N_( "OpenGL cube rotation speed" )
163 #define SPEED_LONGTEXT N_( "Rotation speed of the OpenGL cube effect, if " \
165 #define EFFECT_TEXT N_("Effect")
166 #define EFFECT_LONGTEXT N_( \
167 "Several visual OpenGL effects are available." )
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") };
177 set_shortname( "OpenGL" );
178 set_category( CAT_VIDEO );
179 set_subcategory( SUBCAT_VIDEO_VOUT );
180 set_description( _("OpenGL video output") );
182 set_capability( "video output", 200 );
184 set_capability( "video output", 20 );
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 );
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 );
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 *****************************************************************************/
216 vout_thread_t *p_vout;
218 uint8_t *pp_buffer[2];
222 GLuint p_textures[2];
230 /*****************************************************************************
231 * CreateVout: This function allocates and initializes the OpenGL vout method.
232 *****************************************************************************/
233 static int CreateVout( vlc_object_t *p_this )
235 vout_thread_t *p_vout = (vout_thread_t *)p_this;
238 /* Allocate structure */
239 p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
242 msg_Err( p_vout, "out of memory" );
246 var_Create( p_vout, "opengl-effect", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
250 p_sys->i_tex_width = p_vout->fmt_in.i_width;
251 p_sys->i_tex_height = p_vout->fmt_in.i_height;
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 );
258 msg_Dbg( p_vout, "Texture size: %dx%d", p_sys->i_tex_width,
259 p_sys->i_tex_height );
263 (vout_thread_t *)vlc_object_create( p_this, VLC_OBJECT_OPENGL );
264 if( p_sys->p_vout == NULL )
266 msg_Err( p_vout, "out of memory" );
269 vlc_object_attach( p_sys->p_vout, p_this );
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;
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 )
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 );
292 p_sys->f_speed = var_CreateGetFloat( p_vout, "opengl-cube-speed" );
293 p_sys->f_radius = var_CreateGetFloat( p_vout, "opengl-cylinder-radius" );
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;
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 );
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 );
320 /*****************************************************************************
321 * Init: initialize the OpenGL video thread output method
322 *****************************************************************************/
323 static int Init( vout_thread_t *p_vout )
325 vout_sys_t *p_sys = p_vout->p_sys;
329 p_sys->p_vout->pf_init( p_sys->p_vout );
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');
336 #elif (VLCGL_FORMAT == GL_YCBCR_422_APPLE)
337 p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
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;
348 p_vout->output.i_rmask = 0x000000ff;
349 p_vout->output.i_gmask = 0x0000ff00;
350 p_vout->output.i_bmask = 0x00ff0000;
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;
360 p_vout->output.i_rmask = 0xf800;
361 p_vout->output.i_gmask = 0x07e0;
362 p_vout->output.i_bmask = 0x001f;
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;
373 p_vout->output.i_rmask = 0x000000ff;
374 p_vout->output.i_gmask = 0x0000ff00;
375 p_vout->output.i_bmask = 0x00ff0000;
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;
386 p_vout->fmt_out = p_vout->fmt_in;
387 p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
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] )
395 msg_Err( p_vout, "out of memory" );
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] )
402 msg_Err( p_vout, "out of memory" );
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;
416 p_vout->p_picture[0].i_status = DESTROYED_PICTURE;
417 p_vout->p_picture[0].i_type = DIRECT_PICTURE;
419 PP_OUTPUTPICTURE[ 0 ] = &p_vout->p_picture[0];
421 I_OUTPUTPICTURES = 1;
423 if( p_sys->p_vout->pf_lock &&
424 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
426 msg_Warn( p_vout, "could not lock OpenGL provider" );
430 InitTextures( p_vout );
433 glDisable(GL_DEPTH_TEST);
434 glDepthMask(GL_FALSE);
435 glDisable(GL_CULL_FACE);
436 glClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
437 glClear( GL_COLOR_BUFFER_BIT );
439 /* Check if the user asked for useless visual effects */
440 var_Get( p_vout, "opengl-effect", &val );
441 if( !val.psz_string || !strcmp( val.psz_string, "none" ))
443 p_sys->i_effect = OPENGL_EFFECT_NONE;
445 else if( !strcmp( val.psz_string, "cube" ) )
447 p_sys->i_effect = OPENGL_EFFECT_CUBE;
449 glEnable( GL_CULL_FACE);
451 else if( !strcmp( val.psz_string, "transparent-cube" ) )
453 p_sys->i_effect = OPENGL_EFFECT_TRANSPARENT_CUBE;
455 glDisable( GL_DEPTH_TEST );
456 glEnable( GL_BLEND );
457 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
461 #ifdef OPENGL_MORE_EFFECT
463 while (( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]) ) && (pow(2,p_sys->i_effect) < INIFILE))
467 if (pow(2,p_sys->i_effect) < INIFILE)
468 p_sys->i_effect = pow(2,p_sys->i_effect);
469 else if ( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]))
471 msg_Warn( p_vout, "no valid opengl effect provided, using "
473 p_sys->i_effect = OPENGL_EFFECT_NONE;
476 msg_Warn( p_vout, "no valid opengl effect provided, using "
478 p_sys->i_effect = OPENGL_EFFECT_NONE;
481 if( val.psz_string ) free( val.psz_string );
483 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
484 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
486 /* Set the perpective */
487 glMatrixMode( GL_PROJECTION );
489 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
490 glMatrixMode( GL_MODELVIEW );
492 glTranslatef( 0.0, 0.0, - 5.0 );
494 #ifdef OPENGL_MORE_EFFECT
497 /* Set the perpective */
498 glMatrixMode( GL_PROJECTION );
500 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
501 glMatrixMode( GL_MODELVIEW );
503 glTranslatef( 0.0, 0.0, -3.0 );
505 float f_pov_x, f_pov_y, f_pov_z;
506 f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
507 f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
508 f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
509 gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
512 if( p_sys->p_vout->pf_unlock )
514 p_sys->p_vout->pf_unlock( p_sys->p_vout );
520 /*****************************************************************************
521 * End: terminate GLX video thread output method
522 *****************************************************************************/
523 static void End( vout_thread_t *p_vout )
525 vout_sys_t *p_sys = p_vout->p_sys;
527 if( p_sys->p_vout->pf_lock &&
528 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
530 msg_Warn( p_vout, "could not lock OpenGL provider" );
537 /* Free the texture buffer*/
538 glDeleteTextures( 2, p_sys->p_textures );
539 if( p_sys->pp_buffer[0] ) free( p_sys->pp_buffer[0] );
540 if( p_sys->pp_buffer[1] ) free( p_sys->pp_buffer[1] );
542 if( p_sys->p_vout->pf_unlock )
544 p_sys->p_vout->pf_unlock( p_sys->p_vout );
548 /*****************************************************************************
549 * Destroy: destroy GLX video thread output method
550 *****************************************************************************
551 * Terminate an output method created by CreateVout
552 *****************************************************************************/
553 static void DestroyVout( vlc_object_t *p_this )
555 vout_thread_t *p_vout = (vout_thread_t *)p_this;
556 vout_sys_t *p_sys = p_vout->p_sys;
558 module_Unneed( p_sys->p_vout, p_sys->p_vout->p_module );
559 vlc_object_detach( p_sys->p_vout );
560 vlc_object_destroy( p_sys->p_vout );
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 )
573 vout_sys_t *p_sys = p_vout->p_sys;
574 int i_ret, i_fullscreen_change;
576 i_fullscreen_change = ( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE );
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;
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;
599 if( p_sys->p_vout->pf_lock &&
600 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
602 msg_Warn( p_vout, "could not lock OpenGL provider" );
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 )
610 InitTextures( p_vout );
612 switch( p_sys->i_effect )
614 case OPENGL_EFFECT_CUBE:
615 #ifdef OPENGL_MORE_EFFECT
626 glEnable( GL_CULL_FACE );
629 case OPENGL_EFFECT_TRANSPARENT_CUBE:
630 glDisable( GL_DEPTH_TEST );
631 glEnable( GL_BLEND );
632 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
636 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
637 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
639 /* Set the perpective */
640 glMatrixMode( GL_PROJECTION );
642 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
643 glMatrixMode( GL_MODELVIEW );
645 glTranslatef( 0.0, 0.0, - 5.0 );
647 #ifdef OPENGL_MORE_EFFECT
650 glMatrixMode( GL_PROJECTION );
652 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
653 glMatrixMode( GL_MODELVIEW );
655 glTranslatef( 0.0, 0.0, -3.0 );
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);
666 if( p_sys->p_vout->pf_unlock )
668 p_sys->p_vout->pf_unlock( p_sys->p_vout );
675 /*****************************************************************************
676 * Render: render previously calculated output
677 *****************************************************************************/
678 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
680 vout_sys_t *p_sys = p_vout->p_sys;
682 /* On Win32/GLX, we do this the usual way:
683 + Fill the buffer with new content,
684 + Reload the texture,
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,
692 (Thanks to gcc from the Arstechnica forums for the tip)
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
699 if( p_sys->p_vout->pf_lock &&
700 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
702 msg_Warn( p_vout, "could not lock OpenGL provider" );
708 i_new_index = ( p_sys->i_index + 1 ) & 1;
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] );
718 /* Bind to the previous texture for drawing */
719 glBindTexture( VLCGL_TARGET, p_sys->p_textures[p_sys->i_index] );
722 p_sys->i_index = i_new_index;
723 p_pic->p->p_pixels = p_sys->pp_buffer[p_sys->i_index];
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] );
733 if( p_sys->p_vout->pf_unlock )
735 p_sys->p_vout->pf_unlock( p_sys->p_vout );
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)
746 double x,y,xnew,ynew;
747 double r,theta,rnew,thetanew;
749 x = (double)i * (width / ((double)i_visible_width));
750 y = (double)j * (height / ((double)i_visible_height));
752 x = (2.0 * (double)x / width) - 1;
753 y = (2.0 * (double)y / height) - 1;
761 /* GRID2D TRANSFORMATION */
769 xnew = rnew * cos(thetanew);
770 ynew = rnew * sin(thetanew);
779 xnew = rnew * cos(thetanew);
780 ynew = rnew * sin(thetanew);
783 xnew = asin(x) / PID2;
784 ynew = asin(y) / PID2;
787 rnew = asin(r) / PID2;
789 xnew = rnew * cos(thetanew);
790 ynew = rnew * sin(thetanew);
792 /* OTHER WAY: 3D MODEL */
798 *ix = width * (xnew + 1) / (2.0);
799 *iy = height * (ynew + 1) / (2.0);
803 /*****************************************************************************
804 * Z_Compute: Calculate the Z-coordinate
805 *****************************************************************************/
806 float Z_Compute(float p, int distortion, float x, float y)
809 double d_p = p / 100.0;
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));
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));
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));
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));
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));
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));
832 /* OTHER WAY: GRID2D TRANSFORMATION */
849 /*****************************************************************************
850 * DisplayVideo: displays previously rendered output
851 *****************************************************************************/
852 static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
854 vout_sys_t *p_sys = p_vout->p_sys;
855 float f_width, f_height, f_x, f_y;
857 if( p_sys->p_vout->pf_lock &&
858 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
860 msg_Warn( p_vout, "could not lock OpenGL provider" );
864 /* glTexCoord works differently with GL_TEXTURE_2D and
865 GL_TEXTURE_RECTANGLE_EXT */
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;
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;
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 */
886 glClear( GL_COLOR_BUFFER_BIT );
888 if( p_sys->i_effect == OPENGL_EFFECT_NONE )
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 );
899 #ifdef OPENGL_MORE_EFFECT
900 if ((p_sys->i_effect > OPENGL_EFFECT_TRANSPARENT_CUBE) ||
901 ((p_sys->i_effect == OPENGL_EFFECT_NONE)))
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);
909 int i_distortion = p_sys->i_effect;
910 float f_p = p_sys->f_radius;
912 glEnable( VLCGL_TARGET );
914 for (i_i = 0; i_i < p_vout->fmt_out.i_visible_width; i_i += i_n_x)
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;
924 for (i_j = 0; i_j < p_vout->fmt_out.i_visible_height; i_j += i_n_y)
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;
931 for (i_m = i_index_max; i_m < i_index_max + 4; i_m++)
933 int i_k = ((i_m % 4) == 1) || ((i_m % 4) == 2);
934 int i_l = ((i_m % 4) == 2) || ((i_m % 4) == 3);
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));
949 glRotatef( 0.5 * p_sys->f_speed , 0.3, 0.5, 0.7 );
951 glEnable( VLCGL_TARGET );
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 );
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 );
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 );
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 );
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 );
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 );
992 glDisable( VLCGL_TARGET );
994 p_sys->p_vout->pf_swap( p_sys->p_vout );
996 if( p_sys->p_vout->pf_unlock )
998 p_sys->p_vout->pf_unlock( p_sys->p_vout );
1002 int GetAlignedSize( int i_size )
1004 /* Return the nearest power of 2 */
1006 while( i_result < i_size )
1013 /*****************************************************************************
1014 * Control: control facility for the vout
1015 *****************************************************************************/
1016 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
1018 vout_sys_t *p_sys = p_vout->p_sys;
1023 return vout_vaControlDefault( p_vout, i_query, args );
1026 if( p_sys->p_vout->pf_control )
1027 return p_sys->p_vout->pf_control( p_sys->p_vout, i_query, args );
1029 return vout_vaControlDefault( p_vout, i_query, args );
1033 static int InitTextures( vout_thread_t *p_vout )
1035 vout_sys_t *p_sys = p_vout->p_sys;
1038 glDeleteTextures( 2, p_sys->p_textures );
1039 glGenTextures( 2, p_sys->p_textures );
1041 for( i_index = 0; i_index < 2; i_index++ )
1043 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_index] );
1045 /* Set the texture parameters */
1046 glTexParameterf( VLCGL_TARGET, GL_TEXTURE_PRIORITY, 1.0 );
1048 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
1049 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
1051 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
1052 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
1054 glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
1057 /* Tell the driver not to make a copy of the texture but to use
1059 glEnable( GL_UNPACK_CLIENT_STORAGE_APPLE );
1060 glPixelStorei( GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE );
1063 /* Use VRAM texturing */
1064 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1065 GL_STORAGE_CACHED_APPLE );
1067 /* Use AGP texturing */
1068 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1069 GL_STORAGE_SHARED_APPLE );
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] );
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 )
1088 return var_Set( (vlc_object_t *)_p_vout, psz_var, newval );