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 */
40 #include <OpenGL/gl.h>
41 #include <OpenGL/glext.h>
43 /* On OS X, use GL_TEXTURE_RECTANGLE_EXT instead of GL_TEXTURE_2D.
44 This allows sizes which are not powers of 2 */
45 #define VLCGL_TARGET GL_TEXTURE_RECTANGLE_EXT
47 /* OS X OpenGL supports YUV. Hehe. */
48 #define VLCGL_FORMAT GL_YCBCR_422_APPLE
49 #define VLCGL_TYPE GL_UNSIGNED_SHORT_8_8_APPLE
53 #define VLCGL_TARGET GL_TEXTURE_2D
56 #ifndef GL_UNSIGNED_SHORT_5_6_5
57 #define GL_UNSIGNED_SHORT_5_6_5 0x8363
59 //#define VLCGL_RGB_FORMAT GL_RGB
60 //#define VLCGL_RGB_TYPE GL_UNSIGNED_SHORT_5_6_5
63 //#define VLCGL_RGB_FORMAT GL_RGB
64 //#define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
67 #define VLCGL_RGB_FORMAT GL_RGBA
68 #define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
72 #define YCBCR_MESA 0x8757
74 #ifndef UNSIGNED_SHORT_8_8_MESA
75 #define UNSIGNED_SHORT_8_8_MESA 0x85BA
77 #define VLCGL_YUV_FORMAT YCBCR_MESA
78 #define VLCGL_YUV_TYPE UNSIGNED_SHORT_8_8_MESA
80 /* Use RGB on Win32/GLX */
81 #define VLCGL_FORMAT VLCGL_RGB_FORMAT
82 #define VLCGL_TYPE VLCGL_RGB_TYPE
83 //#define VLCGL_FORMAT VLCGL_YUV_FORMAT
84 //#define VLCGL_TYPE VLCGL_YUV_TYPE
87 #ifndef GL_CLAMP_TO_EDGE
88 # define GL_CLAMP_TO_EDGE 0x812F
92 #define OPENGL_EFFECT_NONE 1
93 #define OPENGL_EFFECT_CUBE 2
94 #define OPENGL_EFFECT_TRANSPARENT_CUBE 4
95 #if defined( HAVE_GL_GLU_H ) || defined( __APPLE__ )
96 #define OPENGL_MORE_EFFECT 8
99 #ifdef OPENGL_MORE_EFFECT
102 #include <OpenGL/glu.h>
110 /*GRID2D TRANSFORMATION */
117 #define INIFILE 4096 // not used, just for mark end ...
118 #define SIGN(x) (x < 0 ? (-1) : 1)
119 #define PID2 1.570796326794896619231322
121 static const char *ppsz_effects[] = {
122 "none", "cube", "transparent-cube", "cylinder", "torus", "sphere","SQUAREXY","SQUARER", "ASINXY", "ASINR", "SINEXY", "SINER" };
123 static const char *ppsz_effects_text[] = {
124 N_("None"), N_("Cube"), N_("Transparent Cube"),
125 N_("Cylinder"), N_("Torus"), N_("Sphere"), N_("SQUAREXY"),N_("SQUARER"), N_("ASINXY"), N_("ASINR"), N_("SINEXY"), N_("SINER") };
128 /*****************************************************************************
130 *****************************************************************************/
131 static int CreateVout ( vlc_object_t * );
132 static void DestroyVout ( vlc_object_t * );
133 static int Init ( vout_thread_t * );
134 static void End ( vout_thread_t * );
135 static int Manage ( vout_thread_t * );
136 static void Render ( vout_thread_t *, picture_t * );
137 static void DisplayVideo ( vout_thread_t *, picture_t * );
138 static int Control ( vout_thread_t *, int, va_list );
140 static inline int GetAlignedSize( int );
142 static int InitTextures ( vout_thread_t * );
143 static int SendEvents ( vlc_object_t *, char const *,
144 vlc_value_t, vlc_value_t, void * );
146 #ifdef OPENGL_MORE_EFFECT
147 static float Z_Compute ( float, int, float, float );
148 static void Transform ( float, int, float, float, int, int, int, int, double *, double * );
150 /*****************************************************************************
152 *****************************************************************************/
153 #define ACCURACY_TEXT N_( "OpenGL sampling accuracy " )
154 #define ACCURACY_LONGTEXT N_( "Select the accuracy of 3D object sampling(1 = min and 10 = max)" )
155 #define RADIUS_TEXT N_( "OpenGL Cylinder radius" )
156 #define RADIUS_LONGTEXT N_( "Radius of the OpenGL cylinder effect, if enabled" )
157 #define POV_X_TEXT N_("Point of view x-coordinate")
158 #define POV_X_LONGTEXT N_("Point of view (X coordinate) of the cube/cylinder "\
159 "effect, if enabled.")
160 #define POV_Y_TEXT N_("Point of view y-coordinate")
161 #define POV_Y_LONGTEXT N_("Point of view (Y coordinate) of the cube/cylinder "\
162 "effect, if enabled.")
163 #define POV_Z_TEXT N_("Point of view z-coordinate")
164 #define POV_Z_LONGTEXT N_("Point of view (Z coordinate) of the cube/cylinder "\
165 "effect, if enabled.")
167 #define PROVIDER_TEXT N_("OpenGL Provider")
168 #define PROVIDER_LONGTEXT N_("Allows you to modify what OpenGL provider should be used")
169 #define SPEED_TEXT N_( "OpenGL cube rotation speed" )
170 #define SPEED_LONGTEXT N_( "Rotation speed of the OpenGL cube effect, if " \
172 #define EFFECT_TEXT N_("Effect")
173 #define EFFECT_LONGTEXT N_( \
174 "Several visual OpenGL effects are available." )
176 #ifndef OPENGL_MORE_EFFECT
177 static const char *ppsz_effects[] = {
178 "none", "cube", "transparent-cube" };
179 static const char *ppsz_effects_text[] = {
180 N_("None"), N_("Cube"), N_("Transparent Cube") };
184 set_shortname( "OpenGL" );
185 set_category( CAT_VIDEO );
186 set_subcategory( SUBCAT_VIDEO_VOUT );
187 set_description( _("OpenGL video output") );
189 set_capability( "video output", 200 );
191 set_capability( "video output", 20 );
193 add_shortcut( "opengl" );
194 add_float( "opengl-cube-speed", 2.0, NULL, SPEED_TEXT,
195 SPEED_LONGTEXT, VLC_TRUE );
196 #ifdef OPENGL_MORE_EFFECT
197 add_integer_with_range( "opengl-accuracy", 4, 1, 10, NULL, ACCURACY_TEXT,
198 ACCURACY_LONGTEXT, VLC_TRUE );
199 add_float_with_range( "opengl-pov-x", 0.0, -1.0, 1.0, NULL, POV_X_TEXT,
200 POV_X_LONGTEXT, VLC_TRUE );
201 add_float_with_range( "opengl-pov-y", 0.0, -1.0, 1.0, NULL, POV_Y_TEXT,
202 POV_Y_LONGTEXT, VLC_TRUE );
203 add_float_with_range( "opengl-pov-z", -1.0, -1.0, 1.0, NULL, POV_Z_TEXT,
204 POV_Z_LONGTEXT, VLC_TRUE );
205 add_float( "opengl-cylinder-radius", -100.0, NULL, RADIUS_TEXT,
206 RADIUS_LONGTEXT, VLC_TRUE );
209 /* Allow opengl provider plugin selection */
210 add_string( "opengl-provider", "default", NULL, PROVIDER_TEXT,
211 PROVIDER_LONGTEXT, VLC_TRUE );
212 set_callbacks( CreateVout, DestroyVout );
213 add_string( "opengl-effect", "none", NULL, EFFECT_TEXT,
214 EFFECT_LONGTEXT, VLC_FALSE );
215 change_string_list( ppsz_effects, ppsz_effects_text, 0 );
218 /*****************************************************************************
219 * vout_sys_t: video output method descriptor
220 *****************************************************************************
221 * This structure is part of the video output thread descriptor.
222 * It describes the OpenGL specific properties of the output thread.
223 *****************************************************************************/
226 vout_thread_t *p_vout;
228 uint8_t *pp_buffer[2];
232 GLuint p_textures[2];
240 /*****************************************************************************
241 * CreateVout: This function allocates and initializes the OpenGL vout method.
242 *****************************************************************************/
243 static int CreateVout( vlc_object_t *p_this )
245 vout_thread_t *p_vout = (vout_thread_t *)p_this;
249 /* Allocate structure */
250 p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
253 msg_Err( p_vout, "out of memory" );
257 var_Create( p_vout, "opengl-effect", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
261 p_sys->i_tex_width = p_vout->fmt_in.i_width;
262 p_sys->i_tex_height = p_vout->fmt_in.i_height;
264 /* A texture must have a size aligned on a power of 2 */
265 p_sys->i_tex_width = GetAlignedSize( p_vout->fmt_in.i_width );
266 p_sys->i_tex_height = GetAlignedSize( p_vout->fmt_in.i_height );
269 msg_Dbg( p_vout, "Texture size: %dx%d", p_sys->i_tex_width,
270 p_sys->i_tex_height );
274 (vout_thread_t *)vlc_object_create( p_this, VLC_OBJECT_OPENGL );
275 if( p_sys->p_vout == NULL )
277 msg_Err( p_vout, "out of memory" );
280 vlc_object_attach( p_sys->p_vout, p_this );
282 p_sys->p_vout->i_window_width = p_vout->i_window_width;
283 p_sys->p_vout->i_window_height = p_vout->i_window_height;
284 p_sys->p_vout->b_fullscreen = p_vout->b_fullscreen;
285 p_sys->p_vout->render.i_width = p_vout->render.i_width;
286 p_sys->p_vout->render.i_height = p_vout->render.i_height;
287 p_sys->p_vout->render.i_aspect = p_vout->render.i_aspect;
288 p_sys->p_vout->fmt_render = p_vout->fmt_render;
289 p_sys->p_vout->fmt_in = p_vout->fmt_in;
290 p_sys->p_vout->b_scale = p_vout->b_scale;
291 p_sys->p_vout->i_alignment = p_vout->i_alignment;
293 psz = config_GetPsz( p_vout, "opengl-provider" );
295 msg_Dbg( p_vout, "requesting \"%s\" opengl provider",
296 psz ? psz : "default" );
298 p_sys->p_vout->p_module =
299 module_Need( p_sys->p_vout, "opengl provider", psz, 0 );
301 if( p_sys->p_vout->p_module == NULL )
303 msg_Warn( p_vout, "No OpenGL provider found" );
304 vlc_object_detach( p_sys->p_vout );
305 vlc_object_destroy( p_sys->p_vout );
309 p_sys->f_speed = var_CreateGetFloat( p_vout, "opengl-cube-speed" );
310 p_sys->f_radius = var_CreateGetFloat( p_vout, "opengl-cylinder-radius" );
312 p_vout->pf_init = Init;
313 p_vout->pf_end = End;
314 p_vout->pf_manage = Manage;
315 p_vout->pf_render = Render;
316 p_vout->pf_display = DisplayVideo;
317 p_vout->pf_control = Control;
319 /* Forward events from the opengl provider */
320 var_Create( p_sys->p_vout, "mouse-x", VLC_VAR_INTEGER );
321 var_Create( p_sys->p_vout, "mouse-y", VLC_VAR_INTEGER );
322 var_Create( p_sys->p_vout, "mouse-moved", VLC_VAR_BOOL );
323 var_Create( p_sys->p_vout, "mouse-clicked", VLC_VAR_INTEGER );
324 var_Create( p_sys->p_vout, "mouse-button-down", VLC_VAR_INTEGER );
325 var_Create( p_sys->p_vout, "video-on-top",
326 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
328 var_AddCallback( p_sys->p_vout, "mouse-x", SendEvents, p_vout );
329 var_AddCallback( p_sys->p_vout, "mouse-y", SendEvents, p_vout );
330 var_AddCallback( p_sys->p_vout, "mouse-moved", SendEvents, p_vout );
331 var_AddCallback( p_sys->p_vout, "mouse-clicked", SendEvents, p_vout );
332 var_AddCallback( p_sys->p_vout, "mouse-button-down", SendEvents, p_vout );
337 /*****************************************************************************
338 * Init: initialize the OpenGL video thread output method
339 *****************************************************************************/
340 static int Init( vout_thread_t *p_vout )
342 vout_sys_t *p_sys = p_vout->p_sys;
346 p_sys->p_vout->pf_init( p_sys->p_vout );
348 /* TODO: We use YCbCr on Mac which is Y422, but on OSX it seems to == YUY2. Verify */
349 #if ( defined( WORDS_BIGENDIAN ) && VLCGL_FORMAT == GL_YCBCR_422_APPLE ) || (VLCGL_FORMAT == YCBCR_MESA)
350 p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
353 #elif (VLCGL_FORMAT == GL_YCBCR_422_APPLE)
354 p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
357 #elif VLCGL_FORMAT == GL_RGB
358 # if VLCGL_TYPE == GL_UNSIGNED_BYTE
359 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
360 # if defined( WORDS_BIGENDIAN )
361 p_vout->output.i_rmask = 0x00ff0000;
362 p_vout->output.i_gmask = 0x0000ff00;
363 p_vout->output.i_bmask = 0x000000ff;
365 p_vout->output.i_rmask = 0x000000ff;
366 p_vout->output.i_gmask = 0x0000ff00;
367 p_vout->output.i_bmask = 0x00ff0000;
371 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
372 # if defined( WORDS_BIGENDIAN )
373 p_vout->output.i_rmask = 0x001f;
374 p_vout->output.i_gmask = 0x07e0;
375 p_vout->output.i_bmask = 0xf800;
377 p_vout->output.i_rmask = 0xf800;
378 p_vout->output.i_gmask = 0x07e0;
379 p_vout->output.i_bmask = 0x001f;
384 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
385 # if defined( WORDS_BIGENDIAN )
386 p_vout->output.i_rmask = 0xff000000;
387 p_vout->output.i_gmask = 0x00ff0000;
388 p_vout->output.i_bmask = 0x0000ff00;
390 p_vout->output.i_rmask = 0x000000ff;
391 p_vout->output.i_gmask = 0x0000ff00;
392 p_vout->output.i_bmask = 0x00ff0000;
397 /* Since OpenGL can do rescaling for us, stick to the default
398 * coordinates and aspect. */
399 p_vout->output.i_width = p_vout->render.i_width;
400 p_vout->output.i_height = p_vout->render.i_height;
401 p_vout->output.i_aspect = p_vout->render.i_aspect;
403 p_vout->fmt_out = p_vout->fmt_in;
404 p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
406 /* We know the chroma, allocate one buffer which will be used
407 * directly by the decoder */
408 p_sys->pp_buffer[0] =
409 malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
410 if( !p_sys->pp_buffer[0] )
412 msg_Err( p_vout, "out of memory" );
415 p_sys->pp_buffer[1] =
416 malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
417 if( !p_sys->pp_buffer[1] )
419 msg_Err( p_vout, "out of memory" );
423 p_vout->p_picture[0].i_planes = 1;
424 p_vout->p_picture[0].p->p_pixels = p_sys->pp_buffer[0];
425 p_vout->p_picture[0].p->i_lines = p_vout->output.i_height;
426 p_vout->p_picture[0].p->i_visible_lines = p_vout->output.i_height;
427 p_vout->p_picture[0].p->i_pixel_pitch = i_pixel_pitch;
428 p_vout->p_picture[0].p->i_pitch = p_vout->output.i_width *
429 p_vout->p_picture[0].p->i_pixel_pitch;
430 p_vout->p_picture[0].p->i_visible_pitch = p_vout->output.i_width *
431 p_vout->p_picture[0].p->i_pixel_pitch;
433 p_vout->p_picture[0].i_status = DESTROYED_PICTURE;
434 p_vout->p_picture[0].i_type = DIRECT_PICTURE;
436 PP_OUTPUTPICTURE[ 0 ] = &p_vout->p_picture[0];
438 I_OUTPUTPICTURES = 1;
440 if( p_sys->p_vout->pf_lock &&
441 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
443 msg_Warn( p_vout, "could not lock OpenGL provider" );
447 InitTextures( p_vout );
450 glDisable(GL_DEPTH_TEST);
451 glDepthMask(GL_FALSE);
452 glDisable(GL_CULL_FACE);
453 glClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
454 glClear( GL_COLOR_BUFFER_BIT );
456 /* Check if the user asked for useless visual effects */
457 var_Get( p_vout, "opengl-effect", &val );
458 if( !val.psz_string || !strcmp( val.psz_string, "none" ))
460 p_sys->i_effect = OPENGL_EFFECT_NONE;
462 else if( !strcmp( val.psz_string, "cube" ) )
464 p_sys->i_effect = OPENGL_EFFECT_CUBE;
466 glEnable( GL_CULL_FACE);
468 else if( !strcmp( val.psz_string, "transparent-cube" ) )
470 p_sys->i_effect = OPENGL_EFFECT_TRANSPARENT_CUBE;
472 glDisable( GL_DEPTH_TEST );
473 glEnable( GL_BLEND );
474 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
478 #ifdef OPENGL_MORE_EFFECT
480 while (( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]) ) && (pow(2,p_sys->i_effect) < INIFILE))
484 if (pow(2,p_sys->i_effect) < INIFILE)
485 p_sys->i_effect = pow(2,p_sys->i_effect);
486 else if ( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]))
488 msg_Warn( p_vout, "no valid opengl effect provided, using "
490 p_sys->i_effect = OPENGL_EFFECT_NONE;
493 msg_Warn( p_vout, "no valid opengl effect provided, using "
495 p_sys->i_effect = OPENGL_EFFECT_NONE;
498 if( val.psz_string ) free( val.psz_string );
500 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
501 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
503 /* Set the perpective */
504 glMatrixMode( GL_PROJECTION );
506 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
507 glMatrixMode( GL_MODELVIEW );
509 glTranslatef( 0.0, 0.0, - 5.0 );
511 #ifdef OPENGL_MORE_EFFECT
514 /* Set the perpective */
515 glMatrixMode( GL_PROJECTION );
517 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
518 glMatrixMode( GL_MODELVIEW );
520 glTranslatef( 0.0, 0.0, -3.0 );
522 float f_pov_x, f_pov_y, f_pov_z;
523 f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
524 f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
525 f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
526 gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
529 if( p_sys->p_vout->pf_unlock )
531 p_sys->p_vout->pf_unlock( p_sys->p_vout );
537 /*****************************************************************************
538 * End: terminate GLX video thread output method
539 *****************************************************************************/
540 static void End( vout_thread_t *p_vout )
542 vout_sys_t *p_sys = p_vout->p_sys;
544 if( p_sys->p_vout->pf_lock &&
545 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
547 msg_Warn( p_vout, "could not lock OpenGL provider" );
554 /* Free the texture buffer*/
555 glDeleteTextures( 2, p_sys->p_textures );
556 if( p_sys->pp_buffer[0] ) free( p_sys->pp_buffer[0] );
557 if( p_sys->pp_buffer[1] ) free( p_sys->pp_buffer[1] );
559 if( p_sys->p_vout->pf_unlock )
561 p_sys->p_vout->pf_unlock( p_sys->p_vout );
565 /*****************************************************************************
566 * Destroy: destroy GLX video thread output method
567 *****************************************************************************
568 * Terminate an output method created by CreateVout
569 *****************************************************************************/
570 static void DestroyVout( vlc_object_t *p_this )
572 vout_thread_t *p_vout = (vout_thread_t *)p_this;
573 vout_sys_t *p_sys = p_vout->p_sys;
575 module_Unneed( p_sys->p_vout, p_sys->p_vout->p_module );
576 vlc_object_detach( p_sys->p_vout );
577 vlc_object_destroy( p_sys->p_vout );
582 /*****************************************************************************
583 * Manage: handle Sys events
584 *****************************************************************************
585 * This function should be called regularly by video output thread. It returns
586 * a non null value if an error occurred.
587 *****************************************************************************/
588 static int Manage( vout_thread_t *p_vout )
590 vout_sys_t *p_sys = p_vout->p_sys;
591 int i_ret, i_fullscreen_change;
593 i_fullscreen_change = ( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE );
595 p_vout->fmt_out.i_x_offset = p_sys->p_vout->fmt_in.i_x_offset =
596 p_vout->fmt_in.i_x_offset;
597 p_vout->fmt_out.i_y_offset = p_sys->p_vout->fmt_in.i_y_offset =
598 p_vout->fmt_in.i_y_offset;
599 p_vout->fmt_out.i_visible_width = p_sys->p_vout->fmt_in.i_visible_width =
600 p_vout->fmt_in.i_visible_width;
601 p_vout->fmt_out.i_visible_height = p_sys->p_vout->fmt_in.i_visible_height =
602 p_vout->fmt_in.i_visible_height;
603 p_vout->fmt_out.i_aspect = p_sys->p_vout->fmt_in.i_aspect =
604 p_vout->fmt_in.i_aspect;
605 p_vout->fmt_out.i_sar_num = p_sys->p_vout->fmt_in.i_sar_num =
606 p_vout->fmt_in.i_sar_num;
607 p_vout->fmt_out.i_sar_den = p_sys->p_vout->fmt_in.i_sar_den =
608 p_vout->fmt_in.i_sar_den;
609 p_vout->output.i_aspect = p_vout->fmt_in.i_aspect;
611 p_sys->p_vout->i_changes = p_vout->i_changes;
612 i_ret = p_sys->p_vout->pf_manage( p_sys->p_vout );
613 p_vout->i_changes = p_sys->p_vout->i_changes;
616 if( p_sys->p_vout->pf_lock &&
617 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
619 msg_Warn( p_vout, "could not lock OpenGL provider" );
623 /* On OS X, we create the window and the GL view when entering
624 fullscreen - the textures have to be inited again */
625 if( i_fullscreen_change )
627 InitTextures( p_vout );
629 switch( p_sys->i_effect )
631 case OPENGL_EFFECT_CUBE:
632 #ifdef OPENGL_MORE_EFFECT
643 glEnable( GL_CULL_FACE );
646 case OPENGL_EFFECT_TRANSPARENT_CUBE:
647 glDisable( GL_DEPTH_TEST );
648 glEnable( GL_BLEND );
649 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
653 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
654 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
656 /* Set the perpective */
657 glMatrixMode( GL_PROJECTION );
659 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
660 glMatrixMode( GL_MODELVIEW );
662 glTranslatef( 0.0, 0.0, - 5.0 );
664 #ifdef OPENGL_MORE_EFFECT
667 glMatrixMode( GL_PROJECTION );
669 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
670 glMatrixMode( GL_MODELVIEW );
672 glTranslatef( 0.0, 0.0, -3.0 );
674 float f_pov_x, f_pov_y, f_pov_z;
675 f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
676 f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
677 f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
678 gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
683 if( p_sys->p_vout->pf_unlock )
685 p_sys->p_vout->pf_unlock( p_sys->p_vout );
688 // to align in real time in OPENGL
689 if (p_sys->p_vout->i_alignment != p_vout->i_alignment)
691 p_vout->i_changes = VOUT_CROP_CHANGE; //to force change
692 p_sys->p_vout->i_alignment = p_vout->i_alignment;
697 /*****************************************************************************
698 * Render: render previously calculated output
699 *****************************************************************************/
700 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
702 vout_sys_t *p_sys = p_vout->p_sys;
704 /* On Win32/GLX, we do this the usual way:
705 + Fill the buffer with new content,
706 + Reload the texture,
709 On OS X with VRAM or AGP texturing, the order has to be:
710 + Reload the texture,
711 + Fill the buffer with new content,
714 (Thanks to gcc from the Arstechnica forums for the tip)
716 Therefore, we have to use two buffers and textures. On Win32/GLX,
717 we reload the texture to be displayed and use it right away. On
718 OS X, we first render, then reload the texture to be used next
721 if( p_sys->p_vout->pf_lock &&
722 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
724 msg_Warn( p_vout, "could not lock OpenGL provider" );
730 i_new_index = ( p_sys->i_index + 1 ) & 1;
733 /* Update the texture */
734 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_new_index] );
735 glTexSubImage2D( VLCGL_TARGET, 0, 0, 0,
736 p_vout->fmt_out.i_width,
737 p_vout->fmt_out.i_height,
738 VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[i_new_index] );
740 /* Bind to the previous texture for drawing */
741 glBindTexture( VLCGL_TARGET, p_sys->p_textures[p_sys->i_index] );
744 p_sys->i_index = i_new_index;
745 p_pic->p->p_pixels = p_sys->pp_buffer[p_sys->i_index];
748 /* Update the texture */
749 glTexSubImage2D( GL_TEXTURE_2D, 0, 0, 0,
750 p_vout->fmt_out.i_width,
751 p_vout->fmt_out.i_height,
752 VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[0] );
755 if( p_sys->p_vout->pf_unlock )
757 p_sys->p_vout->pf_unlock( p_sys->p_vout );
762 #ifdef OPENGL_MORE_EFFECT
763 /*****************************************************************************
764 * Transform: Calculate the distorted grid coordinates
765 *****************************************************************************/
766 static 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)
768 double x,y,xnew,ynew;
769 double r,theta,rnew,thetanew;
771 x = (double)i * (width / ((double)i_visible_width));
772 y = (double)j * (height / ((double)i_visible_height));
774 x = (2.0 * (double)x / width) - 1;
775 y = (2.0 * (double)y / height) - 1;
783 /* GRID2D TRANSFORMATION */
791 xnew = rnew * cos(thetanew);
792 ynew = rnew * sin(thetanew);
801 xnew = rnew * cos(thetanew);
802 ynew = rnew * sin(thetanew);
805 xnew = asin(x) / PID2;
806 ynew = asin(y) / PID2;
809 rnew = asin(r) / PID2;
811 xnew = rnew * cos(thetanew);
812 ynew = rnew * sin(thetanew);
814 /* OTHER WAY: 3D MODEL */
820 *ix = width * (xnew + 1) / (2.0);
821 *iy = height * (ynew + 1) / (2.0);
824 /*****************************************************************************
825 * Z_Compute: Calculate the Z-coordinate
826 *****************************************************************************/
827 static float Z_Compute(float p, int distortion, float x, float y)
830 double d_p = p / 100.0;
837 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));
839 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));
843 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));
845 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));
849 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));
851 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));
853 /* OTHER WAY: GRID2D TRANSFORMATION */
870 /*****************************************************************************
871 * DisplayVideo: displays previously rendered output
872 *****************************************************************************/
873 static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
875 vout_sys_t *p_sys = p_vout->p_sys;
876 float f_width, f_height, f_x, f_y;
878 if( p_sys->p_vout->pf_lock &&
879 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
881 msg_Warn( p_vout, "could not lock OpenGL provider" );
885 /* glTexCoord works differently with GL_TEXTURE_2D and
886 GL_TEXTURE_RECTANGLE_EXT */
888 f_x = (float)p_vout->fmt_out.i_x_offset;
889 f_y = (float)p_vout->fmt_out.i_y_offset;
890 f_width = (float)p_vout->fmt_out.i_x_offset +
891 (float)p_vout->fmt_out.i_visible_width;
892 f_height = (float)p_vout->fmt_out.i_y_offset +
893 (float)p_vout->fmt_out.i_visible_height;
895 f_x = (float)p_vout->fmt_out.i_x_offset / p_sys->i_tex_width;
896 f_y = (float)p_vout->fmt_out.i_y_offset / p_sys->i_tex_height;
897 f_width = ( (float)p_vout->fmt_out.i_x_offset +
898 p_vout->fmt_out.i_visible_width ) / p_sys->i_tex_width;
899 f_height = ( (float)p_vout->fmt_out.i_y_offset +
900 p_vout->fmt_out.i_visible_height ) / p_sys->i_tex_height;
903 /* Why drawing here and not in Render()? Because this way, the
904 OpenGL providers can call pf_display to force redraw. Currently,
905 the OS X provider uses it to get a smooth window resizing */
907 glClear( GL_COLOR_BUFFER_BIT );
909 if( p_sys->i_effect == OPENGL_EFFECT_NONE )
911 glEnable( VLCGL_TARGET );
912 glBegin( GL_POLYGON );
913 glTexCoord2f( f_x, f_y ); glVertex2f( -1.0, 1.0 );
914 glTexCoord2f( f_width, f_y ); glVertex2f( 1.0, 1.0 );
915 glTexCoord2f( f_width, f_height ); glVertex2f( 1.0, -1.0 );
916 glTexCoord2f( f_x, f_height ); glVertex2f( -1.0, -1.0 );
920 #ifdef OPENGL_MORE_EFFECT
921 if ((p_sys->i_effect > OPENGL_EFFECT_TRANSPARENT_CUBE) ||
922 ((p_sys->i_effect == OPENGL_EFFECT_NONE)))
924 unsigned int i_i, i_j;
925 unsigned int i_accuracy = config_GetInt( p_vout, "opengl-accuracy");
926 unsigned int i_n = pow(2, i_accuracy);
927 unsigned int i_n_x = (p_vout->fmt_out.i_visible_width / (i_n * 2));
928 unsigned int i_n_y = (p_vout->fmt_out.i_visible_height / i_n);
930 int i_distortion = p_sys->i_effect;
931 float f_p = p_sys->f_radius;
933 glEnable( VLCGL_TARGET );
935 for (i_i = 0; i_i < p_vout->fmt_out.i_visible_width; i_i += i_n_x)
937 if ( i_i == i_n_x * i_n / 2) i_n_x += p_vout->fmt_out.i_visible_width % i_n;
938 if ((i_i == (p_vout->fmt_out.i_visible_width / i_n) * i_n / 2 + i_n_x) &&
939 (p_vout->fmt_out.i_visible_width / i_n != i_n_x))
940 i_n_x -= p_vout->fmt_out.i_visible_width % i_n;
945 for (i_j = 0; i_j < p_vout->fmt_out.i_visible_height; i_j += i_n_y)
947 if ( i_j == i_n_y * i_n / 2) i_n_y += p_vout->fmt_out.i_visible_height % i_n;
948 if ((i_j == (p_vout->fmt_out.i_visible_height / i_n) * i_n / 2 + i_n_y) &&
949 (p_vout->fmt_out.i_visible_height / i_n != i_n_y))
950 i_n_y -= p_vout->fmt_out.i_visible_height % i_n;
952 for (i_m = i_index_max; i_m < i_index_max + 4; i_m++)
954 int i_k = ((i_m % 4) == 1) || ((i_m % 4) == 2);
955 int i_l = ((i_m % 4) == 2) || ((i_m % 4) == 3);
957 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);
958 glTexCoord2f(f_x + d_x, f_y + d_y);
959 d_x = - 1.0 + 2.0 * ((double)(i_k * i_n_x + i_i) / (double)p_vout->fmt_out.i_visible_width);
960 d_y = 1.0 - 2.0 * (((double)i_l * i_n_y + i_j) / (double)p_vout->fmt_out.i_visible_height);
961 glVertex3f((float)d_x, (float)d_y, Z_Compute(f_p, i_distortion, (float)d_x, (float)d_y));
970 glRotatef( 0.5 * p_sys->f_speed , 0.3, 0.5, 0.7 );
972 glEnable( VLCGL_TARGET );
976 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, 1.0 );
977 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, 1.0 );
978 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, 1.0 );
979 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, 1.0 );
982 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
983 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
984 glTexCoord2f( f_width, f_height ); glVertex3f( - 1.0, - 1.0, 1.0 );
985 glTexCoord2f( f_width, f_y ); glVertex3f( - 1.0, 1.0, 1.0 );
988 glTexCoord2f( f_x, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
989 glTexCoord2f( f_x, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
990 glTexCoord2f( f_width, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
991 glTexCoord2f( f_width, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
994 glTexCoord2f( f_x, f_y ); glVertex3f( 1.0, 1.0, 1.0 );
995 glTexCoord2f( f_x, f_height ); glVertex3f( 1.0, - 1.0, 1.0 );
996 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
997 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
1000 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
1001 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, 1.0, 1.0 );
1002 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, 1.0, 1.0 );
1003 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
1006 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, - 1.0, 1.0 );
1007 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
1008 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
1009 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, - 1.0, 1.0 );
1013 glDisable( VLCGL_TARGET );
1015 p_sys->p_vout->pf_swap( p_sys->p_vout );
1017 if( p_sys->p_vout->pf_unlock )
1019 p_sys->p_vout->pf_unlock( p_sys->p_vout );
1023 int GetAlignedSize( int i_size )
1025 /* Return the nearest power of 2 */
1027 while( i_result < i_size )
1034 /*****************************************************************************
1035 * Control: control facility for the vout
1036 *****************************************************************************/
1037 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
1039 vout_sys_t *p_sys = p_vout->p_sys;
1044 return vout_vaControlDefault( p_vout, i_query, args );
1047 if( p_sys->p_vout->pf_control )
1048 return p_sys->p_vout->pf_control( p_sys->p_vout, i_query, args );
1050 return vout_vaControlDefault( p_vout, i_query, args );
1054 static int InitTextures( vout_thread_t *p_vout )
1056 vout_sys_t *p_sys = p_vout->p_sys;
1059 glDeleteTextures( 2, p_sys->p_textures );
1060 glGenTextures( 2, p_sys->p_textures );
1062 for( i_index = 0; i_index < 2; i_index++ )
1064 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_index] );
1066 /* Set the texture parameters */
1067 glTexParameterf( VLCGL_TARGET, GL_TEXTURE_PRIORITY, 1.0 );
1069 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
1070 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
1072 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
1073 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
1075 glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
1078 /* Tell the driver not to make a copy of the texture but to use
1080 glEnable( GL_UNPACK_CLIENT_STORAGE_APPLE );
1081 glPixelStorei( GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE );
1084 /* Use VRAM texturing */
1085 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1086 GL_STORAGE_CACHED_APPLE );
1088 /* Use AGP texturing */
1089 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1090 GL_STORAGE_SHARED_APPLE );
1094 /* Call glTexImage2D only once, and use glTexSubImage2D later */
1095 glTexImage2D( VLCGL_TARGET, 0, 3, p_sys->i_tex_width,
1096 p_sys->i_tex_height, 0, VLCGL_FORMAT, VLCGL_TYPE,
1097 p_sys->pp_buffer[i_index] );
1103 /*****************************************************************************
1104 * SendEvents: forward mouse and keyboard events to the parent p_vout
1105 *****************************************************************************/
1106 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
1107 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
1109 return var_Set( (vlc_object_t *)_p_vout, psz_var, newval );