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 */
36 #include <OpenGL/gl.h>
37 #include <OpenGL/glext.h>
39 /* On OS X, use GL_TEXTURE_RECTANGLE_EXT instead of GL_TEXTURE_2D.
40 This allows sizes which are not powers of 2 */
41 #define VLCGL_TARGET GL_TEXTURE_RECTANGLE_EXT
43 /* OS X OpenGL supports YUV. Hehe. */
44 #define VLCGL_FORMAT GL_YCBCR_422_APPLE
45 #define VLCGL_TYPE GL_UNSIGNED_SHORT_8_8_APPLE
49 #define VLCGL_TARGET GL_TEXTURE_2D
52 #ifndef GL_UNSIGNED_SHORT_5_6_5
53 #define GL_UNSIGNED_SHORT_5_6_5 0x8363
55 //#define VLCGL_RGB_FORMAT GL_RGB
56 //#define VLCGL_RGB_TYPE GL_UNSIGNED_SHORT_5_6_5
59 //#define VLCGL_RGB_FORMAT GL_RGB
60 //#define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
63 #define VLCGL_RGB_FORMAT GL_RGBA
64 #define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
68 #define YCBCR_MESA 0x8757
70 #ifndef UNSIGNED_SHORT_8_8_MESA
71 #define UNSIGNED_SHORT_8_8_MESA 0x85BA
73 #define VLCGL_YUV_FORMAT YCBCR_MESA
74 #define VLCGL_YUV_TYPE UNSIGNED_SHORT_8_8_MESA
76 /* Use RGB on Win32/GLX */
77 #define VLCGL_FORMAT VLCGL_RGB_FORMAT
78 #define VLCGL_TYPE VLCGL_RGB_TYPE
79 //#define VLCGL_FORMAT VLCGL_YUV_FORMAT
80 //#define VLCGL_TYPE VLCGL_YUV_TYPE
83 #ifndef GL_CLAMP_TO_EDGE
84 # define GL_CLAMP_TO_EDGE 0x812F
88 #define OPENGL_EFFECT_NONE 1
89 #define OPENGL_EFFECT_CUBE 2
90 #define OPENGL_EFFECT_TRANSPARENT_CUBE 4
91 #if defined( HAVE_GL_GLU_H ) || defined( __APPLE__ )
92 #define OPENGL_MORE_EFFECT 8
95 #ifdef OPENGL_MORE_EFFECT
98 #include <OpenGL/glu.h>
106 /*GRID2D TRANSFORMATION */
113 #define INIFILE 4096 // not used, just for mark end ...
114 #define SIGN(x) (x < 0 ? (-1) : 1)
115 #define PID2 1.570796326794896619231322
117 static const char *ppsz_effects[] = {
118 "none", "cube", "transparent-cube", "cylinder", "torus", "sphere","SQUAREXY","SQUARER", "ASINXY", "ASINR", "SINEXY", "SINER" };
119 static const char *ppsz_effects_text[] = {
120 N_("None"), N_("Cube"), N_("Transparent Cube"),
121 N_("Cylinder"), N_("Torus"), N_("Sphere"), N_("SQUAREXY"),N_("SQUARER"), N_("ASINXY"), N_("ASINR"), N_("SINEXY"), N_("SINER") };
124 /*****************************************************************************
126 *****************************************************************************/
127 static int CreateVout ( vlc_object_t * );
128 static void DestroyVout ( vlc_object_t * );
129 static int Init ( vout_thread_t * );
130 static void End ( vout_thread_t * );
131 static int Manage ( vout_thread_t * );
132 static void Render ( vout_thread_t *, picture_t * );
133 static void DisplayVideo ( vout_thread_t *, picture_t * );
134 static int Control ( vout_thread_t *, int, va_list );
136 static inline int GetAlignedSize( int );
138 static int InitTextures ( vout_thread_t * );
139 static int SendEvents ( vlc_object_t *, char const *,
140 vlc_value_t, vlc_value_t, void * );
142 #ifdef OPENGL_MORE_EFFECT
143 static float Z_Compute ( float, int, float, float );
144 static void Transform ( float, int, float, float, int, int, int, int, double *, double * );
146 /*****************************************************************************
148 *****************************************************************************/
149 #define ACCURACY_TEXT N_( "OpenGL sampling accuracy " )
150 #define ACCURACY_LONGTEXT N_( "Select the accuracy of 3D object sampling(1 = min and 10 = max)" )
151 #define RADIUS_TEXT N_( "OpenGL Cylinder radius" )
152 #define RADIUS_LONGTEXT N_( "Radius of the OpenGL cylinder effect, if enabled" )
153 #define POV_X_TEXT N_("Point of view x-coordinate")
154 #define POV_X_LONGTEXT N_("Point of view (X coordinate) of the cube/cylinder "\
155 "effect, if enabled.")
156 #define POV_Y_TEXT N_("Point of view y-coordinate")
157 #define POV_Y_LONGTEXT N_("Point of view (Y coordinate) of the cube/cylinder "\
158 "effect, if enabled.")
159 #define POV_Z_TEXT N_("Point of view z-coordinate")
160 #define POV_Z_LONGTEXT N_("Point of view (Z coordinate) of the cube/cylinder "\
161 "effect, if enabled.")
163 #define PROVIDER_TEXT N_("OpenGL Provider")
164 #define PROVIDER_LONGTEXT N_("Allows you to modify what OpenGL provider should be used")
165 #define SPEED_TEXT N_( "OpenGL cube rotation speed" )
166 #define SPEED_LONGTEXT N_( "Rotation speed of the OpenGL cube effect, if " \
168 #define EFFECT_TEXT N_("Effect")
169 #define EFFECT_LONGTEXT N_( \
170 "Several visual OpenGL effects are available." )
172 #ifndef OPENGL_MORE_EFFECT
173 static const char *ppsz_effects[] = {
174 "none", "cube", "transparent-cube" };
175 static const char *ppsz_effects_text[] = {
176 N_("None"), N_("Cube"), N_("Transparent Cube") };
180 set_shortname( "OpenGL" );
181 set_category( CAT_VIDEO );
182 set_subcategory( SUBCAT_VIDEO_VOUT );
183 set_description( _("OpenGL video output") );
185 set_capability( "video output", 200 );
187 set_capability( "video output", 20 );
189 add_shortcut( "opengl" );
190 add_float( "opengl-cube-speed", 2.0, NULL, SPEED_TEXT,
191 SPEED_LONGTEXT, VLC_TRUE );
192 #ifdef OPENGL_MORE_EFFECT
193 add_integer_with_range( "opengl-accuracy", 4, 1, 10, NULL, ACCURACY_TEXT,
194 ACCURACY_LONGTEXT, VLC_TRUE );
195 add_float_with_range( "opengl-pov-x", 0.0, -1.0, 1.0, NULL, POV_X_TEXT,
196 POV_X_LONGTEXT, VLC_TRUE );
197 add_float_with_range( "opengl-pov-y", 0.0, -1.0, 1.0, NULL, POV_Y_TEXT,
198 POV_Y_LONGTEXT, VLC_TRUE );
199 add_float_with_range( "opengl-pov-z", -1.0, -1.0, 1.0, NULL, POV_Z_TEXT,
200 POV_Z_LONGTEXT, VLC_TRUE );
201 add_float( "opengl-cylinder-radius", -100.0, NULL, RADIUS_TEXT,
202 RADIUS_LONGTEXT, VLC_TRUE );
205 /* Allow opengl provider plugin selection */
206 add_string( "opengl-provider", "default", NULL, PROVIDER_TEXT,
207 PROVIDER_LONGTEXT, VLC_TRUE );
208 set_callbacks( CreateVout, DestroyVout );
209 add_string( "opengl-effect", "none", NULL, EFFECT_TEXT,
210 EFFECT_LONGTEXT, VLC_FALSE );
211 change_string_list( ppsz_effects, ppsz_effects_text, 0 );
214 /*****************************************************************************
215 * vout_sys_t: video output method descriptor
216 *****************************************************************************
217 * This structure is part of the video output thread descriptor.
218 * It describes the OpenGL specific properties of the output thread.
219 *****************************************************************************/
222 vout_thread_t *p_vout;
224 uint8_t *pp_buffer[2];
228 GLuint p_textures[2];
236 /*****************************************************************************
237 * CreateVout: This function allocates and initializes the OpenGL vout method.
238 *****************************************************************************/
239 static int CreateVout( vlc_object_t *p_this )
241 vout_thread_t *p_vout = (vout_thread_t *)p_this;
245 /* Allocate structure */
246 p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
249 msg_Err( p_vout, "out of memory" );
253 var_Create( p_vout, "opengl-effect", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
257 p_sys->i_tex_width = p_vout->fmt_in.i_width;
258 p_sys->i_tex_height = p_vout->fmt_in.i_height;
260 /* A texture must have a size aligned on a power of 2 */
261 p_sys->i_tex_width = GetAlignedSize( p_vout->fmt_in.i_width );
262 p_sys->i_tex_height = GetAlignedSize( p_vout->fmt_in.i_height );
265 msg_Dbg( p_vout, "Texture size: %dx%d", p_sys->i_tex_width,
266 p_sys->i_tex_height );
270 (vout_thread_t *)vlc_object_create( p_this, VLC_OBJECT_OPENGL );
271 if( p_sys->p_vout == NULL )
273 msg_Err( p_vout, "out of memory" );
276 vlc_object_attach( p_sys->p_vout, p_this );
278 p_sys->p_vout->i_window_width = p_vout->i_window_width;
279 p_sys->p_vout->i_window_height = p_vout->i_window_height;
280 p_sys->p_vout->b_fullscreen = p_vout->b_fullscreen;
281 p_sys->p_vout->render.i_width = p_vout->render.i_width;
282 p_sys->p_vout->render.i_height = p_vout->render.i_height;
283 p_sys->p_vout->render.i_aspect = p_vout->render.i_aspect;
284 p_sys->p_vout->fmt_render = p_vout->fmt_render;
285 p_sys->p_vout->fmt_in = p_vout->fmt_in;
286 p_sys->p_vout->b_scale = p_vout->b_scale;
287 p_sys->p_vout->i_alignment = p_vout->i_alignment;
289 psz = config_GetPsz( p_vout, "opengl-provider" );
291 msg_Dbg( p_vout, "requesting \"%s\" opengl provider",
292 psz ? psz : "default" );
294 p_sys->p_vout->p_module =
295 module_Need( p_sys->p_vout, "opengl provider", psz, 0 );
297 if( p_sys->p_vout->p_module == NULL )
299 msg_Warn( p_vout, "No OpenGL provider found" );
300 vlc_object_detach( p_sys->p_vout );
301 vlc_object_destroy( p_sys->p_vout );
305 p_sys->f_speed = var_CreateGetFloat( p_vout, "opengl-cube-speed" );
306 p_sys->f_radius = var_CreateGetFloat( p_vout, "opengl-cylinder-radius" );
308 p_vout->pf_init = Init;
309 p_vout->pf_end = End;
310 p_vout->pf_manage = Manage;
311 p_vout->pf_render = Render;
312 p_vout->pf_display = DisplayVideo;
313 p_vout->pf_control = Control;
315 /* Forward events from the opengl provider */
316 var_Create( p_sys->p_vout, "mouse-x", VLC_VAR_INTEGER );
317 var_Create( p_sys->p_vout, "mouse-y", VLC_VAR_INTEGER );
318 var_Create( p_sys->p_vout, "mouse-moved", VLC_VAR_BOOL );
319 var_Create( p_sys->p_vout, "mouse-clicked", VLC_VAR_INTEGER );
320 var_Create( p_sys->p_vout, "mouse-button-down", VLC_VAR_INTEGER );
321 var_Create( p_sys->p_vout, "video-on-top",
322 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
324 var_AddCallback( p_sys->p_vout, "mouse-x", SendEvents, p_vout );
325 var_AddCallback( p_sys->p_vout, "mouse-y", SendEvents, p_vout );
326 var_AddCallback( p_sys->p_vout, "mouse-moved", SendEvents, p_vout );
327 var_AddCallback( p_sys->p_vout, "mouse-clicked", SendEvents, p_vout );
328 var_AddCallback( p_sys->p_vout, "mouse-button-down", SendEvents, p_vout );
333 /*****************************************************************************
334 * Init: initialize the OpenGL video thread output method
335 *****************************************************************************/
336 static int Init( vout_thread_t *p_vout )
338 vout_sys_t *p_sys = p_vout->p_sys;
342 p_sys->p_vout->pf_init( p_sys->p_vout );
344 /* TODO: We use YCbCr on Mac which is Y422, but on OSX it seems to == YUY2. Verify */
345 #if ( defined( WORDS_BIGENDIAN ) && VLCGL_FORMAT == GL_YCBCR_422_APPLE ) || (VLCGL_FORMAT == YCBCR_MESA)
346 p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
349 #elif (VLCGL_FORMAT == GL_YCBCR_422_APPLE)
350 p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
353 #elif VLCGL_FORMAT == GL_RGB
354 # if VLCGL_TYPE == GL_UNSIGNED_BYTE
355 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
356 # if defined( WORDS_BIGENDIAN )
357 p_vout->output.i_rmask = 0x00ff0000;
358 p_vout->output.i_gmask = 0x0000ff00;
359 p_vout->output.i_bmask = 0x000000ff;
361 p_vout->output.i_rmask = 0x000000ff;
362 p_vout->output.i_gmask = 0x0000ff00;
363 p_vout->output.i_bmask = 0x00ff0000;
367 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
368 # if defined( WORDS_BIGENDIAN )
369 p_vout->output.i_rmask = 0x001f;
370 p_vout->output.i_gmask = 0x07e0;
371 p_vout->output.i_bmask = 0xf800;
373 p_vout->output.i_rmask = 0xf800;
374 p_vout->output.i_gmask = 0x07e0;
375 p_vout->output.i_bmask = 0x001f;
380 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
381 # if defined( WORDS_BIGENDIAN )
382 p_vout->output.i_rmask = 0xff000000;
383 p_vout->output.i_gmask = 0x00ff0000;
384 p_vout->output.i_bmask = 0x0000ff00;
386 p_vout->output.i_rmask = 0x000000ff;
387 p_vout->output.i_gmask = 0x0000ff00;
388 p_vout->output.i_bmask = 0x00ff0000;
393 /* Since OpenGL can do rescaling for us, stick to the default
394 * coordinates and aspect. */
395 p_vout->output.i_width = p_vout->render.i_width;
396 p_vout->output.i_height = p_vout->render.i_height;
397 p_vout->output.i_aspect = p_vout->render.i_aspect;
399 p_vout->fmt_out = p_vout->fmt_in;
400 p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
402 /* We know the chroma, allocate one buffer which will be used
403 * directly by the decoder */
404 p_sys->pp_buffer[0] =
405 malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
406 if( !p_sys->pp_buffer[0] )
408 msg_Err( p_vout, "out of memory" );
411 p_sys->pp_buffer[1] =
412 malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
413 if( !p_sys->pp_buffer[1] )
415 msg_Err( p_vout, "out of memory" );
419 p_vout->p_picture[0].i_planes = 1;
420 p_vout->p_picture[0].p->p_pixels = p_sys->pp_buffer[0];
421 p_vout->p_picture[0].p->i_lines = p_vout->output.i_height;
422 p_vout->p_picture[0].p->i_visible_lines = p_vout->output.i_height;
423 p_vout->p_picture[0].p->i_pixel_pitch = i_pixel_pitch;
424 p_vout->p_picture[0].p->i_pitch = p_vout->output.i_width *
425 p_vout->p_picture[0].p->i_pixel_pitch;
426 p_vout->p_picture[0].p->i_visible_pitch = p_vout->output.i_width *
427 p_vout->p_picture[0].p->i_pixel_pitch;
429 p_vout->p_picture[0].i_status = DESTROYED_PICTURE;
430 p_vout->p_picture[0].i_type = DIRECT_PICTURE;
432 PP_OUTPUTPICTURE[ 0 ] = &p_vout->p_picture[0];
434 I_OUTPUTPICTURES = 1;
436 if( p_sys->p_vout->pf_lock &&
437 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
439 msg_Warn( p_vout, "could not lock OpenGL provider" );
443 InitTextures( p_vout );
446 glDisable(GL_DEPTH_TEST);
447 glDepthMask(GL_FALSE);
448 glDisable(GL_CULL_FACE);
449 glClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
450 glClear( GL_COLOR_BUFFER_BIT );
452 /* Check if the user asked for useless visual effects */
453 var_Get( p_vout, "opengl-effect", &val );
454 if( !val.psz_string || !strcmp( val.psz_string, "none" ))
456 p_sys->i_effect = OPENGL_EFFECT_NONE;
458 else if( !strcmp( val.psz_string, "cube" ) )
460 p_sys->i_effect = OPENGL_EFFECT_CUBE;
462 glEnable( GL_CULL_FACE);
464 else if( !strcmp( val.psz_string, "transparent-cube" ) )
466 p_sys->i_effect = OPENGL_EFFECT_TRANSPARENT_CUBE;
468 glDisable( GL_DEPTH_TEST );
469 glEnable( GL_BLEND );
470 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
474 #ifdef OPENGL_MORE_EFFECT
476 while (( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]) ) && (pow(2,p_sys->i_effect) < INIFILE))
480 if (pow(2,p_sys->i_effect) < INIFILE)
481 p_sys->i_effect = pow(2,p_sys->i_effect);
482 else if ( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]))
484 msg_Warn( p_vout, "no valid opengl effect provided, using "
486 p_sys->i_effect = OPENGL_EFFECT_NONE;
489 msg_Warn( p_vout, "no valid opengl effect provided, using "
491 p_sys->i_effect = OPENGL_EFFECT_NONE;
494 if( val.psz_string ) free( val.psz_string );
496 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
497 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
499 /* Set the perpective */
500 glMatrixMode( GL_PROJECTION );
502 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
503 glMatrixMode( GL_MODELVIEW );
505 glTranslatef( 0.0, 0.0, - 5.0 );
507 #ifdef OPENGL_MORE_EFFECT
510 /* Set the perpective */
511 glMatrixMode( GL_PROJECTION );
513 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
514 glMatrixMode( GL_MODELVIEW );
516 glTranslatef( 0.0, 0.0, -3.0 );
518 float f_pov_x, f_pov_y, f_pov_z;
519 f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
520 f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
521 f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
522 gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
525 if( p_sys->p_vout->pf_unlock )
527 p_sys->p_vout->pf_unlock( p_sys->p_vout );
533 /*****************************************************************************
534 * End: terminate GLX video thread output method
535 *****************************************************************************/
536 static void End( vout_thread_t *p_vout )
538 vout_sys_t *p_sys = p_vout->p_sys;
540 if( p_sys->p_vout->pf_lock &&
541 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
543 msg_Warn( p_vout, "could not lock OpenGL provider" );
550 /* Free the texture buffer*/
551 glDeleteTextures( 2, p_sys->p_textures );
552 if( p_sys->pp_buffer[0] ) free( p_sys->pp_buffer[0] );
553 if( p_sys->pp_buffer[1] ) free( p_sys->pp_buffer[1] );
555 if( p_sys->p_vout->pf_unlock )
557 p_sys->p_vout->pf_unlock( p_sys->p_vout );
561 /*****************************************************************************
562 * Destroy: destroy GLX video thread output method
563 *****************************************************************************
564 * Terminate an output method created by CreateVout
565 *****************************************************************************/
566 static void DestroyVout( vlc_object_t *p_this )
568 vout_thread_t *p_vout = (vout_thread_t *)p_this;
569 vout_sys_t *p_sys = p_vout->p_sys;
571 module_Unneed( p_sys->p_vout, p_sys->p_vout->p_module );
572 vlc_object_detach( p_sys->p_vout );
573 vlc_object_destroy( p_sys->p_vout );
578 /*****************************************************************************
579 * Manage: handle Sys events
580 *****************************************************************************
581 * This function should be called regularly by video output thread. It returns
582 * a non null value if an error occurred.
583 *****************************************************************************/
584 static int Manage( vout_thread_t *p_vout )
586 vout_sys_t *p_sys = p_vout->p_sys;
587 int i_ret, i_fullscreen_change;
589 i_fullscreen_change = ( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE );
591 p_vout->fmt_out.i_x_offset = p_sys->p_vout->fmt_in.i_x_offset =
592 p_vout->fmt_in.i_x_offset;
593 p_vout->fmt_out.i_y_offset = p_sys->p_vout->fmt_in.i_y_offset =
594 p_vout->fmt_in.i_y_offset;
595 p_vout->fmt_out.i_visible_width = p_sys->p_vout->fmt_in.i_visible_width =
596 p_vout->fmt_in.i_visible_width;
597 p_vout->fmt_out.i_visible_height = p_sys->p_vout->fmt_in.i_visible_height =
598 p_vout->fmt_in.i_visible_height;
599 p_vout->fmt_out.i_aspect = p_sys->p_vout->fmt_in.i_aspect =
600 p_vout->fmt_in.i_aspect;
601 p_vout->fmt_out.i_sar_num = p_sys->p_vout->fmt_in.i_sar_num =
602 p_vout->fmt_in.i_sar_num;
603 p_vout->fmt_out.i_sar_den = p_sys->p_vout->fmt_in.i_sar_den =
604 p_vout->fmt_in.i_sar_den;
605 p_vout->output.i_aspect = p_vout->fmt_in.i_aspect;
607 p_sys->p_vout->i_changes = p_vout->i_changes;
608 i_ret = p_sys->p_vout->pf_manage( p_sys->p_vout );
609 p_vout->i_changes = p_sys->p_vout->i_changes;
612 if( p_sys->p_vout->pf_lock &&
613 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
615 msg_Warn( p_vout, "could not lock OpenGL provider" );
619 /* On OS X, we create the window and the GL view when entering
620 fullscreen - the textures have to be inited again */
621 if( i_fullscreen_change )
623 InitTextures( p_vout );
625 switch( p_sys->i_effect )
627 case OPENGL_EFFECT_CUBE:
628 #ifdef OPENGL_MORE_EFFECT
639 glEnable( GL_CULL_FACE );
642 case OPENGL_EFFECT_TRANSPARENT_CUBE:
643 glDisable( GL_DEPTH_TEST );
644 glEnable( GL_BLEND );
645 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
649 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
650 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
652 /* Set the perpective */
653 glMatrixMode( GL_PROJECTION );
655 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
656 glMatrixMode( GL_MODELVIEW );
658 glTranslatef( 0.0, 0.0, - 5.0 );
660 #ifdef OPENGL_MORE_EFFECT
663 glMatrixMode( GL_PROJECTION );
665 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
666 glMatrixMode( GL_MODELVIEW );
668 glTranslatef( 0.0, 0.0, -3.0 );
670 float f_pov_x, f_pov_y, f_pov_z;
671 f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
672 f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
673 f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
674 gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
679 if( p_sys->p_vout->pf_unlock )
681 p_sys->p_vout->pf_unlock( p_sys->p_vout );
684 // to align in real time in OPENGL
685 if (p_sys->p_vout->i_alignment != p_vout->i_alignment)
687 p_vout->i_changes = VOUT_CROP_CHANGE; //to force change
688 p_sys->p_vout->i_alignment = p_vout->i_alignment;
694 /*****************************************************************************
695 * Render: render previously calculated output
696 *****************************************************************************/
697 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
699 vout_sys_t *p_sys = p_vout->p_sys;
701 /* On Win32/GLX, we do this the usual way:
702 + Fill the buffer with new content,
703 + Reload the texture,
706 On OS X with VRAM or AGP texturing, the order has to be:
707 + Reload the texture,
708 + Fill the buffer with new content,
711 (Thanks to gcc from the Arstechnica forums for the tip)
713 Therefore, we have to use two buffers and textures. On Win32/GLX,
714 we reload the texture to be displayed and use it right away. On
715 OS X, we first render, then reload the texture to be used next
718 if( p_sys->p_vout->pf_lock &&
719 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
721 msg_Warn( p_vout, "could not lock OpenGL provider" );
727 i_new_index = ( p_sys->i_index + 1 ) & 1;
730 /* Update the texture */
731 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_new_index] );
732 glTexSubImage2D( VLCGL_TARGET, 0, 0, 0,
733 p_vout->fmt_out.i_width,
734 p_vout->fmt_out.i_height,
735 VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[i_new_index] );
737 /* Bind to the previous texture for drawing */
738 glBindTexture( VLCGL_TARGET, p_sys->p_textures[p_sys->i_index] );
741 p_sys->i_index = i_new_index;
742 p_pic->p->p_pixels = p_sys->pp_buffer[p_sys->i_index];
745 /* Update the texture */
746 glTexSubImage2D( GL_TEXTURE_2D, 0, 0, 0,
747 p_vout->fmt_out.i_width,
748 p_vout->fmt_out.i_height,
749 VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[0] );
752 if( p_sys->p_vout->pf_unlock )
754 p_sys->p_vout->pf_unlock( p_sys->p_vout );
759 #ifdef OPENGL_MORE_EFFECT
760 /*****************************************************************************
761 * Transform: Calculate the distorted grid coordinates
762 *****************************************************************************/
763 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)
765 double x,y,xnew,ynew;
766 double r,theta,rnew,thetanew;
768 x = (double)i * (width / ((double)i_visible_width));
769 y = (double)j * (height / ((double)i_visible_height));
771 x = (2.0 * (double)x / width) - 1;
772 y = (2.0 * (double)y / height) - 1;
780 /* GRID2D TRANSFORMATION */
788 xnew = rnew * cos(thetanew);
789 ynew = rnew * sin(thetanew);
798 xnew = rnew * cos(thetanew);
799 ynew = rnew * sin(thetanew);
802 xnew = asin(x) / PID2;
803 ynew = asin(y) / PID2;
806 rnew = asin(r) / PID2;
808 xnew = rnew * cos(thetanew);
809 ynew = rnew * sin(thetanew);
811 /* OTHER WAY: 3D MODEL */
817 *ix = width * (xnew + 1) / (2.0);
818 *iy = height * (ynew + 1) / (2.0);
821 /*****************************************************************************
822 * Z_Compute: Calculate the Z-coordinate
823 *****************************************************************************/
824 static float Z_Compute(float p, int distortion, float x, float y)
827 double d_p = p / 100.0;
834 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));
836 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));
840 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));
842 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));
846 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));
848 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));
850 /* OTHER WAY: GRID2D TRANSFORMATION */
867 /*****************************************************************************
868 * DisplayVideo: displays previously rendered output
869 *****************************************************************************/
870 static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
872 vout_sys_t *p_sys = p_vout->p_sys;
873 float f_width, f_height, f_x, f_y;
875 if( p_sys->p_vout->pf_lock &&
876 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
878 msg_Warn( p_vout, "could not lock OpenGL provider" );
882 /* glTexCoord works differently with GL_TEXTURE_2D and
883 GL_TEXTURE_RECTANGLE_EXT */
885 f_x = (float)p_vout->fmt_out.i_x_offset;
886 f_y = (float)p_vout->fmt_out.i_y_offset;
887 f_width = (float)p_vout->fmt_out.i_x_offset +
888 (float)p_vout->fmt_out.i_visible_width;
889 f_height = (float)p_vout->fmt_out.i_y_offset +
890 (float)p_vout->fmt_out.i_visible_height;
892 f_x = (float)p_vout->fmt_out.i_x_offset / p_sys->i_tex_width;
893 f_y = (float)p_vout->fmt_out.i_y_offset / p_sys->i_tex_height;
894 f_width = ( (float)p_vout->fmt_out.i_x_offset +
895 p_vout->fmt_out.i_visible_width ) / p_sys->i_tex_width;
896 f_height = ( (float)p_vout->fmt_out.i_y_offset +
897 p_vout->fmt_out.i_visible_height ) / p_sys->i_tex_height;
900 /* Why drawing here and not in Render()? Because this way, the
901 OpenGL providers can call pf_display to force redraw. Currently,
902 the OS X provider uses it to get a smooth window resizing */
904 glClear( GL_COLOR_BUFFER_BIT );
906 if( p_sys->i_effect == OPENGL_EFFECT_NONE )
908 glEnable( VLCGL_TARGET );
909 glBegin( GL_POLYGON );
910 glTexCoord2f( f_x, f_y ); glVertex2f( -1.0, 1.0 );
911 glTexCoord2f( f_width, f_y ); glVertex2f( 1.0, 1.0 );
912 glTexCoord2f( f_width, f_height ); glVertex2f( 1.0, -1.0 );
913 glTexCoord2f( f_x, f_height ); glVertex2f( -1.0, -1.0 );
917 #ifdef OPENGL_MORE_EFFECT
918 if ((p_sys->i_effect > OPENGL_EFFECT_TRANSPARENT_CUBE) ||
919 ((p_sys->i_effect == OPENGL_EFFECT_NONE)))
921 unsigned int i_i, i_j;
922 unsigned int i_accuracy = config_GetInt( p_vout, "opengl-accuracy");
923 unsigned int i_n = pow(2, i_accuracy);
924 unsigned int i_n_x = (p_vout->fmt_out.i_visible_width / (i_n * 2));
925 unsigned int i_n_y = (p_vout->fmt_out.i_visible_height / i_n);
927 int i_distortion = p_sys->i_effect;
928 float f_p = p_sys->f_radius;
930 glEnable( VLCGL_TARGET );
932 for (i_i = 0; i_i < p_vout->fmt_out.i_visible_width; i_i += i_n_x)
934 if ( i_i == i_n_x * i_n / 2) i_n_x += p_vout->fmt_out.i_visible_width % i_n;
935 if ((i_i == (p_vout->fmt_out.i_visible_width / i_n) * i_n / 2 + i_n_x) &&
936 (p_vout->fmt_out.i_visible_width / i_n != i_n_x))
937 i_n_x -= p_vout->fmt_out.i_visible_width % i_n;
942 for (i_j = 0; i_j < p_vout->fmt_out.i_visible_height; i_j += i_n_y)
944 if ( i_j == i_n_y * i_n / 2) i_n_y += p_vout->fmt_out.i_visible_height % i_n;
945 if ((i_j == (p_vout->fmt_out.i_visible_height / i_n) * i_n / 2 + i_n_y) &&
946 (p_vout->fmt_out.i_visible_height / i_n != i_n_y))
947 i_n_y -= p_vout->fmt_out.i_visible_height % i_n;
949 for (i_m = i_index_max; i_m < i_index_max + 4; i_m++)
951 int i_k = ((i_m % 4) == 1) || ((i_m % 4) == 2);
952 int i_l = ((i_m % 4) == 2) || ((i_m % 4) == 3);
954 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);
955 glTexCoord2f(f_x + d_x, f_y + d_y);
956 d_x = - 1.0 + 2.0 * ((double)(i_k * i_n_x + i_i) / (double)p_vout->fmt_out.i_visible_width);
957 d_y = 1.0 - 2.0 * (((double)i_l * i_n_y + i_j) / (double)p_vout->fmt_out.i_visible_height);
958 glVertex3f((float)d_x, (float)d_y, Z_Compute(f_p, i_distortion, (float)d_x, (float)d_y));
967 glRotatef( 0.5 * p_sys->f_speed , 0.3, 0.5, 0.7 );
969 glEnable( VLCGL_TARGET );
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 );
991 glTexCoord2f( f_x, f_y ); glVertex3f( 1.0, 1.0, 1.0 );
992 glTexCoord2f( f_x, f_height ); glVertex3f( 1.0, - 1.0, 1.0 );
993 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
994 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
997 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
998 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, 1.0, 1.0 );
999 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, 1.0, 1.0 );
1000 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
1003 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, - 1.0, 1.0 );
1004 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
1005 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
1006 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, - 1.0, 1.0 );
1010 glDisable( VLCGL_TARGET );
1012 p_sys->p_vout->pf_swap( p_sys->p_vout );
1014 if( p_sys->p_vout->pf_unlock )
1016 p_sys->p_vout->pf_unlock( p_sys->p_vout );
1020 int GetAlignedSize( int i_size )
1022 /* Return the nearest power of 2 */
1024 while( i_result < i_size )
1031 /*****************************************************************************
1032 * Control: control facility for the vout
1033 *****************************************************************************/
1034 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
1036 vout_sys_t *p_sys = p_vout->p_sys;
1041 return vout_vaControlDefault( p_vout, i_query, args );
1044 if( p_sys->p_vout->pf_control )
1045 return p_sys->p_vout->pf_control( p_sys->p_vout, i_query, args );
1047 return vout_vaControlDefault( p_vout, i_query, args );
1051 static int InitTextures( vout_thread_t *p_vout )
1053 vout_sys_t *p_sys = p_vout->p_sys;
1056 glDeleteTextures( 2, p_sys->p_textures );
1057 glGenTextures( 2, p_sys->p_textures );
1059 for( i_index = 0; i_index < 2; i_index++ )
1061 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_index] );
1063 /* Set the texture parameters */
1064 glTexParameterf( VLCGL_TARGET, GL_TEXTURE_PRIORITY, 1.0 );
1066 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
1067 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
1069 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
1070 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
1072 glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
1075 /* Tell the driver not to make a copy of the texture but to use
1077 glEnable( GL_UNPACK_CLIENT_STORAGE_APPLE );
1078 glPixelStorei( GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE );
1081 /* Use VRAM texturing */
1082 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1083 GL_STORAGE_CACHED_APPLE );
1085 /* Use AGP texturing */
1086 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1087 GL_STORAGE_SHARED_APPLE );
1091 /* Call glTexImage2D only once, and use glTexSubImage2D later */
1092 glTexImage2D( VLCGL_TARGET, 0, 3, p_sys->i_tex_width,
1093 p_sys->i_tex_height, 0, VLCGL_FORMAT, VLCGL_TYPE,
1094 p_sys->pp_buffer[i_index] );
1100 /*****************************************************************************
1101 * SendEvents: forward mouse and keyboard events to the parent p_vout
1102 *****************************************************************************/
1103 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
1104 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
1106 return var_Set( (vlc_object_t *)_p_vout, psz_var, newval );