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 */
37 #include <OpenGL/gl.h>
38 #include <OpenGL/glext.h>
40 /* On OS X, use GL_TEXTURE_RECTANGLE_EXT instead of GL_TEXTURE_2D.
41 This allows sizes which are not powers of 2 */
42 #define VLCGL_TARGET GL_TEXTURE_RECTANGLE_EXT
44 /* OS X OpenGL supports YUV. Hehe. */
45 #define VLCGL_FORMAT GL_YCBCR_422_APPLE
46 #define VLCGL_TYPE GL_UNSIGNED_SHORT_8_8_APPLE
50 #define VLCGL_TARGET GL_TEXTURE_2D
53 #ifndef GL_UNSIGNED_SHORT_5_6_5
54 #define GL_UNSIGNED_SHORT_5_6_5 0x8363
56 //#define VLCGL_RGB_FORMAT GL_RGB
57 //#define VLCGL_RGB_TYPE GL_UNSIGNED_SHORT_5_6_5
60 //#define VLCGL_RGB_FORMAT GL_RGB
61 //#define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
64 #define VLCGL_RGB_FORMAT GL_RGBA
65 #define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
69 #define YCBCR_MESA 0x8757
71 #ifndef UNSIGNED_SHORT_8_8_MESA
72 #define UNSIGNED_SHORT_8_8_MESA 0x85BA
74 #define VLCGL_YUV_FORMAT YCBCR_MESA
75 #define VLCGL_YUV_TYPE UNSIGNED_SHORT_8_8_MESA
77 /* Use RGB on Win32/GLX */
78 #define VLCGL_FORMAT VLCGL_RGB_FORMAT
79 #define VLCGL_TYPE VLCGL_RGB_TYPE
80 //#define VLCGL_FORMAT VLCGL_YUV_FORMAT
81 //#define VLCGL_TYPE VLCGL_YUV_TYPE
84 #ifndef GL_CLAMP_TO_EDGE
85 # define GL_CLAMP_TO_EDGE 0x812F
89 #define OPENGL_EFFECT_NONE 1
90 #define OPENGL_EFFECT_CUBE 2
91 #define OPENGL_EFFECT_TRANSPARENT_CUBE 4
92 #if defined( HAVE_GL_GLU_H ) || defined( __APPLE__ )
93 #define OPENGL_MORE_EFFECT 8
96 #ifdef OPENGL_MORE_EFFECT
99 #include <OpenGL/glu.h>
107 /*GRID2D TRANSFORMATION */
114 #define INIFILE 4096 // not used, just for mark end ...
115 #define SIGN(x) (x < 0 ? (-1) : 1)
116 #define PID2 1.570796326794896619231322
118 static const char *ppsz_effects[] = {
119 "none", "cube", "transparent-cube", "cylinder", "torus", "sphere","SQUAREXY","SQUARER", "ASINXY", "ASINR", "SINEXY", "SINER" };
120 static const char *ppsz_effects_text[] = {
121 N_("None"), N_("Cube"), N_("Transparent Cube"),
122 N_("Cylinder"), N_("Torus"), N_("Sphere"), N_("SQUAREXY"),N_("SQUARER"), N_("ASINXY"), N_("ASINR"), N_("SINEXY"), N_("SINER") };
125 /*****************************************************************************
127 *****************************************************************************/
128 static int CreateVout ( vlc_object_t * );
129 static void DestroyVout ( vlc_object_t * );
130 static int Init ( vout_thread_t * );
131 static void End ( vout_thread_t * );
132 static int Manage ( vout_thread_t * );
133 static void Render ( vout_thread_t *, picture_t * );
134 static void DisplayVideo ( vout_thread_t *, picture_t * );
135 static int Control ( vout_thread_t *, int, va_list );
137 static inline int GetAlignedSize( int );
139 static int InitTextures ( vout_thread_t * );
140 static int SendEvents ( vlc_object_t *, char const *,
141 vlc_value_t, vlc_value_t, void * );
143 #ifdef OPENGL_MORE_EFFECT
144 static float Z_Compute ( float, int, float, float );
145 static void Transform ( float, int, float, float, int, int, int, int, double *, double * );
147 /*****************************************************************************
149 *****************************************************************************/
150 #define ACCURACY_TEXT N_( "OpenGL sampling accuracy " )
151 #define ACCURACY_LONGTEXT N_( "Select the accuracy of 3D object sampling(1 = min and 10 = max)" )
152 #define RADIUS_TEXT N_( "OpenGL Cylinder radius" )
153 #define RADIUS_LONGTEXT N_( "Radius of the OpenGL cylinder effect, if enabled" )
154 #define POV_X_TEXT N_("Point of view x-coordinate")
155 #define POV_X_LONGTEXT N_("Point of view (X coordinate) of the cube/cylinder "\
156 "effect, if enabled.")
157 #define POV_Y_TEXT N_("Point of view y-coordinate")
158 #define POV_Y_LONGTEXT N_("Point of view (Y coordinate) of the cube/cylinder "\
159 "effect, if enabled.")
160 #define POV_Z_TEXT N_("Point of view z-coordinate")
161 #define POV_Z_LONGTEXT N_("Point of view (Z coordinate) of the cube/cylinder "\
162 "effect, if enabled.")
164 #define SPEED_TEXT N_( "OpenGL cube rotation speed" )
165 #define SPEED_LONGTEXT N_( "Rotation speed of the OpenGL cube effect, if " \
167 #define EFFECT_TEXT N_("Effect")
168 #define EFFECT_LONGTEXT N_( \
169 "Several visual OpenGL effects are available." )
171 #ifndef OPENGL_MORE_EFFECT
172 static const char *ppsz_effects[] = {
173 "none", "cube", "transparent-cube" };
174 static const char *ppsz_effects_text[] = {
175 N_("None"), N_("Cube"), N_("Transparent Cube") };
179 set_shortname( "OpenGL" );
180 set_category( CAT_VIDEO );
181 set_subcategory( SUBCAT_VIDEO_VOUT );
182 set_description( _("OpenGL video output") );
184 set_capability( "video output", 200 );
186 set_capability( "video output", 20 );
188 add_shortcut( "opengl" );
189 add_float( "opengl-cube-speed", 2.0, NULL, SPEED_TEXT,
190 SPEED_LONGTEXT, VLC_TRUE );
191 #ifdef OPENGL_MORE_EFFECT
192 add_integer_with_range( "opengl-accuracy", 4, 1, 10, NULL, ACCURACY_TEXT,
193 ACCURACY_LONGTEXT, VLC_TRUE );
194 add_float_with_range( "opengl-pov-x", 0.0, -1.0, 1.0, NULL, POV_X_TEXT,
195 POV_X_LONGTEXT, VLC_TRUE );
196 add_float_with_range( "opengl-pov-y", 0.0, -1.0, 1.0, NULL, POV_Y_TEXT,
197 POV_Y_LONGTEXT, VLC_TRUE );
198 add_float_with_range( "opengl-pov-z", -1.0, -1.0, 1.0, NULL, POV_Z_TEXT,
199 POV_Z_LONGTEXT, VLC_TRUE );
200 add_float( "opengl-cylinder-radius", -100.0, NULL, RADIUS_TEXT,
201 RADIUS_LONGTEXT, VLC_TRUE );
204 set_callbacks( CreateVout, DestroyVout );
205 add_string( "opengl-effect", "none", NULL, EFFECT_TEXT,
206 EFFECT_LONGTEXT, VLC_FALSE );
207 change_string_list( ppsz_effects, ppsz_effects_text, 0 );
210 /*****************************************************************************
211 * vout_sys_t: video output method descriptor
212 *****************************************************************************
213 * This structure is part of the video output thread descriptor.
214 * It describes the OpenGL specific properties of the output thread.
215 *****************************************************************************/
218 vout_thread_t *p_vout;
220 uint8_t *pp_buffer[2];
224 GLuint p_textures[2];
232 /*****************************************************************************
233 * CreateVout: This function allocates and initializes the OpenGL vout method.
234 *****************************************************************************/
235 static int CreateVout( vlc_object_t *p_this )
237 vout_thread_t *p_vout = (vout_thread_t *)p_this;
240 /* Allocate structure */
241 p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
244 msg_Err( p_vout, "out of memory" );
248 var_Create( p_vout, "opengl-effect", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
252 p_sys->i_tex_width = p_vout->fmt_in.i_width;
253 p_sys->i_tex_height = p_vout->fmt_in.i_height;
255 /* A texture must have a size aligned on a power of 2 */
256 p_sys->i_tex_width = GetAlignedSize( p_vout->fmt_in.i_width );
257 p_sys->i_tex_height = GetAlignedSize( p_vout->fmt_in.i_height );
260 msg_Dbg( p_vout, "Texture size: %dx%d", p_sys->i_tex_width,
261 p_sys->i_tex_height );
265 (vout_thread_t *)vlc_object_create( p_this, VLC_OBJECT_OPENGL );
266 if( p_sys->p_vout == NULL )
268 msg_Err( p_vout, "out of memory" );
271 vlc_object_attach( p_sys->p_vout, p_this );
273 p_sys->p_vout->i_window_width = p_vout->i_window_width;
274 p_sys->p_vout->i_window_height = p_vout->i_window_height;
275 p_sys->p_vout->b_fullscreen = p_vout->b_fullscreen;
276 p_sys->p_vout->render.i_width = p_vout->render.i_width;
277 p_sys->p_vout->render.i_height = p_vout->render.i_height;
278 p_sys->p_vout->render.i_aspect = p_vout->render.i_aspect;
279 p_sys->p_vout->fmt_render = p_vout->fmt_render;
280 p_sys->p_vout->fmt_in = p_vout->fmt_in;
281 p_sys->p_vout->b_scale = p_vout->b_scale;
282 p_sys->p_vout->i_alignment = p_vout->i_alignment;
284 p_sys->p_vout->p_module =
285 module_Need( p_sys->p_vout, "opengl provider", NULL, 0 );
286 if( p_sys->p_vout->p_module == NULL )
288 msg_Warn( p_vout, "No OpenGL provider found" );
289 vlc_object_detach( p_sys->p_vout );
290 vlc_object_destroy( p_sys->p_vout );
294 p_sys->f_speed = var_CreateGetFloat( p_vout, "opengl-cube-speed" );
295 p_sys->f_radius = var_CreateGetFloat( p_vout, "opengl-cylinder-radius" );
297 p_vout->pf_init = Init;
298 p_vout->pf_end = End;
299 p_vout->pf_manage = Manage;
300 p_vout->pf_render = Render;
301 p_vout->pf_display = DisplayVideo;
302 p_vout->pf_control = Control;
304 /* Forward events from the opengl provider */
305 var_Create( p_sys->p_vout, "mouse-x", VLC_VAR_INTEGER );
306 var_Create( p_sys->p_vout, "mouse-y", VLC_VAR_INTEGER );
307 var_Create( p_sys->p_vout, "mouse-moved", VLC_VAR_BOOL );
308 var_Create( p_sys->p_vout, "mouse-clicked", VLC_VAR_INTEGER );
309 var_Create( p_sys->p_vout, "mouse-button-down", VLC_VAR_INTEGER );
310 var_Create( p_sys->p_vout, "video-on-top",
311 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
313 var_AddCallback( p_sys->p_vout, "mouse-x", SendEvents, p_vout );
314 var_AddCallback( p_sys->p_vout, "mouse-y", SendEvents, p_vout );
315 var_AddCallback( p_sys->p_vout, "mouse-moved", SendEvents, p_vout );
316 var_AddCallback( p_sys->p_vout, "mouse-clicked", SendEvents, p_vout );
317 var_AddCallback( p_sys->p_vout, "mouse-button-down", SendEvents, p_vout );
322 /*****************************************************************************
323 * Init: initialize the OpenGL video thread output method
324 *****************************************************************************/
325 static int Init( vout_thread_t *p_vout )
327 vout_sys_t *p_sys = p_vout->p_sys;
331 p_sys->p_vout->pf_init( p_sys->p_vout );
333 /* TODO: We use YCbCr on Mac which is Y422, but on OSX it seems to == YUY2. Verify */
334 #if ( defined( WORDS_BIGENDIAN ) && VLCGL_FORMAT == GL_YCBCR_422_APPLE ) || (VLCGL_FORMAT == YCBCR_MESA)
335 p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
338 #elif (VLCGL_FORMAT == GL_YCBCR_422_APPLE)
339 p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
342 #elif VLCGL_FORMAT == GL_RGB
343 # if VLCGL_TYPE == GL_UNSIGNED_BYTE
344 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
345 # if defined( WORDS_BIGENDIAN )
346 p_vout->output.i_rmask = 0x00ff0000;
347 p_vout->output.i_gmask = 0x0000ff00;
348 p_vout->output.i_bmask = 0x000000ff;
350 p_vout->output.i_rmask = 0x000000ff;
351 p_vout->output.i_gmask = 0x0000ff00;
352 p_vout->output.i_bmask = 0x00ff0000;
356 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
357 # if defined( WORDS_BIGENDIAN )
358 p_vout->output.i_rmask = 0x001f;
359 p_vout->output.i_gmask = 0x07e0;
360 p_vout->output.i_bmask = 0xf800;
362 p_vout->output.i_rmask = 0xf800;
363 p_vout->output.i_gmask = 0x07e0;
364 p_vout->output.i_bmask = 0x001f;
369 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
370 # if defined( WORDS_BIGENDIAN )
371 p_vout->output.i_rmask = 0xff000000;
372 p_vout->output.i_gmask = 0x00ff0000;
373 p_vout->output.i_bmask = 0x0000ff00;
375 p_vout->output.i_rmask = 0x000000ff;
376 p_vout->output.i_gmask = 0x0000ff00;
377 p_vout->output.i_bmask = 0x00ff0000;
382 /* Since OpenGL can do rescaling for us, stick to the default
383 * coordinates and aspect. */
384 p_vout->output.i_width = p_vout->render.i_width;
385 p_vout->output.i_height = p_vout->render.i_height;
386 p_vout->output.i_aspect = p_vout->render.i_aspect;
388 p_vout->fmt_out = p_vout->fmt_in;
389 p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
391 /* We know the chroma, allocate one buffer which will be used
392 * directly by the decoder */
393 p_sys->pp_buffer[0] =
394 malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
395 if( !p_sys->pp_buffer[0] )
397 msg_Err( p_vout, "out of memory" );
400 p_sys->pp_buffer[1] =
401 malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
402 if( !p_sys->pp_buffer[1] )
404 msg_Err( p_vout, "out of memory" );
408 p_vout->p_picture[0].i_planes = 1;
409 p_vout->p_picture[0].p->p_pixels = p_sys->pp_buffer[0];
410 p_vout->p_picture[0].p->i_lines = p_vout->output.i_height;
411 p_vout->p_picture[0].p->i_visible_lines = p_vout->output.i_height;
412 p_vout->p_picture[0].p->i_pixel_pitch = i_pixel_pitch;
413 p_vout->p_picture[0].p->i_pitch = p_vout->output.i_width *
414 p_vout->p_picture[0].p->i_pixel_pitch;
415 p_vout->p_picture[0].p->i_visible_pitch = p_vout->output.i_width *
416 p_vout->p_picture[0].p->i_pixel_pitch;
418 p_vout->p_picture[0].i_status = DESTROYED_PICTURE;
419 p_vout->p_picture[0].i_type = DIRECT_PICTURE;
421 PP_OUTPUTPICTURE[ 0 ] = &p_vout->p_picture[0];
423 I_OUTPUTPICTURES = 1;
425 if( p_sys->p_vout->pf_lock &&
426 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
428 msg_Warn( p_vout, "could not lock OpenGL provider" );
432 InitTextures( p_vout );
435 glDisable(GL_DEPTH_TEST);
436 glDepthMask(GL_FALSE);
437 glDisable(GL_CULL_FACE);
438 glClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
439 glClear( GL_COLOR_BUFFER_BIT );
441 /* Check if the user asked for useless visual effects */
442 var_Get( p_vout, "opengl-effect", &val );
443 if( !val.psz_string || !strcmp( val.psz_string, "none" ))
445 p_sys->i_effect = OPENGL_EFFECT_NONE;
447 else if( !strcmp( val.psz_string, "cube" ) )
449 p_sys->i_effect = OPENGL_EFFECT_CUBE;
451 glEnable( GL_CULL_FACE);
453 else if( !strcmp( val.psz_string, "transparent-cube" ) )
455 p_sys->i_effect = OPENGL_EFFECT_TRANSPARENT_CUBE;
457 glDisable( GL_DEPTH_TEST );
458 glEnable( GL_BLEND );
459 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
463 #ifdef OPENGL_MORE_EFFECT
465 while (( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]) ) && (pow(2,p_sys->i_effect) < INIFILE))
469 if (pow(2,p_sys->i_effect) < INIFILE)
470 p_sys->i_effect = pow(2,p_sys->i_effect);
471 else if ( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]))
473 msg_Warn( p_vout, "no valid opengl effect provided, using "
475 p_sys->i_effect = OPENGL_EFFECT_NONE;
478 msg_Warn( p_vout, "no valid opengl effect provided, using "
480 p_sys->i_effect = OPENGL_EFFECT_NONE;
483 if( val.psz_string ) free( val.psz_string );
485 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
486 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
488 /* Set the perpective */
489 glMatrixMode( GL_PROJECTION );
491 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
492 glMatrixMode( GL_MODELVIEW );
494 glTranslatef( 0.0, 0.0, - 5.0 );
496 #ifdef OPENGL_MORE_EFFECT
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, -3.0 );
507 float f_pov_x, f_pov_y, f_pov_z;
508 f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
509 f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
510 f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
511 gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
514 if( p_sys->p_vout->pf_unlock )
516 p_sys->p_vout->pf_unlock( p_sys->p_vout );
522 /*****************************************************************************
523 * End: terminate GLX video thread output method
524 *****************************************************************************/
525 static void End( vout_thread_t *p_vout )
527 vout_sys_t *p_sys = p_vout->p_sys;
529 if( p_sys->p_vout->pf_lock &&
530 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
532 msg_Warn( p_vout, "could not lock OpenGL provider" );
539 /* Free the texture buffer*/
540 glDeleteTextures( 2, p_sys->p_textures );
541 if( p_sys->pp_buffer[0] ) free( p_sys->pp_buffer[0] );
542 if( p_sys->pp_buffer[1] ) free( p_sys->pp_buffer[1] );
544 if( p_sys->p_vout->pf_unlock )
546 p_sys->p_vout->pf_unlock( p_sys->p_vout );
550 /*****************************************************************************
551 * Destroy: destroy GLX video thread output method
552 *****************************************************************************
553 * Terminate an output method created by CreateVout
554 *****************************************************************************/
555 static void DestroyVout( vlc_object_t *p_this )
557 vout_thread_t *p_vout = (vout_thread_t *)p_this;
558 vout_sys_t *p_sys = p_vout->p_sys;
560 module_Unneed( p_sys->p_vout, p_sys->p_vout->p_module );
561 vlc_object_detach( p_sys->p_vout );
562 vlc_object_destroy( p_sys->p_vout );
567 /*****************************************************************************
568 * Manage: handle Sys events
569 *****************************************************************************
570 * This function should be called regularly by video output thread. It returns
571 * a non null value if an error occurred.
572 *****************************************************************************/
573 static int Manage( vout_thread_t *p_vout )
575 vout_sys_t *p_sys = p_vout->p_sys;
576 int i_ret, i_fullscreen_change;
578 i_fullscreen_change = ( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE );
580 p_vout->fmt_out.i_x_offset = p_sys->p_vout->fmt_in.i_x_offset =
581 p_vout->fmt_in.i_x_offset;
582 p_vout->fmt_out.i_y_offset = p_sys->p_vout->fmt_in.i_y_offset =
583 p_vout->fmt_in.i_y_offset;
584 p_vout->fmt_out.i_visible_width = p_sys->p_vout->fmt_in.i_visible_width =
585 p_vout->fmt_in.i_visible_width;
586 p_vout->fmt_out.i_visible_height = p_sys->p_vout->fmt_in.i_visible_height =
587 p_vout->fmt_in.i_visible_height;
588 p_vout->fmt_out.i_aspect = p_sys->p_vout->fmt_in.i_aspect =
589 p_vout->fmt_in.i_aspect;
590 p_vout->fmt_out.i_sar_num = p_sys->p_vout->fmt_in.i_sar_num =
591 p_vout->fmt_in.i_sar_num;
592 p_vout->fmt_out.i_sar_den = p_sys->p_vout->fmt_in.i_sar_den =
593 p_vout->fmt_in.i_sar_den;
594 p_vout->output.i_aspect = p_vout->fmt_in.i_aspect;
596 p_sys->p_vout->i_changes = p_vout->i_changes;
597 i_ret = p_sys->p_vout->pf_manage( p_sys->p_vout );
598 p_vout->i_changes = p_sys->p_vout->i_changes;
601 if( p_sys->p_vout->pf_lock &&
602 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
604 msg_Warn( p_vout, "could not lock OpenGL provider" );
608 /* On OS X, we create the window and the GL view when entering
609 fullscreen - the textures have to be inited again */
610 if( i_fullscreen_change )
612 InitTextures( p_vout );
614 switch( p_sys->i_effect )
616 case OPENGL_EFFECT_CUBE:
617 #ifdef OPENGL_MORE_EFFECT
628 glEnable( GL_CULL_FACE );
631 case OPENGL_EFFECT_TRANSPARENT_CUBE:
632 glDisable( GL_DEPTH_TEST );
633 glEnable( GL_BLEND );
634 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
638 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
639 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
641 /* Set the perpective */
642 glMatrixMode( GL_PROJECTION );
644 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
645 glMatrixMode( GL_MODELVIEW );
647 glTranslatef( 0.0, 0.0, - 5.0 );
649 #ifdef OPENGL_MORE_EFFECT
652 glMatrixMode( GL_PROJECTION );
654 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
655 glMatrixMode( GL_MODELVIEW );
657 glTranslatef( 0.0, 0.0, -3.0 );
659 float f_pov_x, f_pov_y, f_pov_z;
660 f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
661 f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
662 f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
663 gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
668 if( p_sys->p_vout->pf_unlock )
670 p_sys->p_vout->pf_unlock( p_sys->p_vout );
673 // to align in real time in OPENGL
674 if (p_sys->p_vout->i_alignment != p_vout->i_alignment)
676 p_vout->i_changes = VOUT_CROP_CHANGE; //to force change
677 p_sys->p_vout->i_alignment = p_vout->i_alignment;
683 /*****************************************************************************
684 * Render: render previously calculated output
685 *****************************************************************************/
686 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
688 vout_sys_t *p_sys = p_vout->p_sys;
690 /* On Win32/GLX, we do this the usual way:
691 + Fill the buffer with new content,
692 + Reload the texture,
695 On OS X with VRAM or AGP texturing, the order has to be:
696 + Reload the texture,
697 + Fill the buffer with new content,
700 (Thanks to gcc from the Arstechnica forums for the tip)
702 Therefore, we have to use two buffers and textures. On Win32/GLX,
703 we reload the texture to be displayed and use it right away. On
704 OS X, we first render, then reload the texture to be used next
707 if( p_sys->p_vout->pf_lock &&
708 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
710 msg_Warn( p_vout, "could not lock OpenGL provider" );
716 i_new_index = ( p_sys->i_index + 1 ) & 1;
719 /* Update the texture */
720 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_new_index] );
721 glTexSubImage2D( VLCGL_TARGET, 0, 0, 0,
722 p_vout->fmt_out.i_width,
723 p_vout->fmt_out.i_height,
724 VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[i_new_index] );
726 /* Bind to the previous texture for drawing */
727 glBindTexture( VLCGL_TARGET, p_sys->p_textures[p_sys->i_index] );
730 p_sys->i_index = i_new_index;
731 p_pic->p->p_pixels = p_sys->pp_buffer[p_sys->i_index];
734 /* Update the texture */
735 glTexSubImage2D( GL_TEXTURE_2D, 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[0] );
741 if( p_sys->p_vout->pf_unlock )
743 p_sys->p_vout->pf_unlock( p_sys->p_vout );
748 #ifdef OPENGL_MORE_EFFECT
749 /*****************************************************************************
750 * Transform: Calculate the distorted grid coordinates
751 *****************************************************************************/
752 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)
754 double x,y,xnew,ynew;
755 double r,theta,rnew,thetanew;
757 x = (double)i * (width / ((double)i_visible_width));
758 y = (double)j * (height / ((double)i_visible_height));
760 x = (2.0 * (double)x / width) - 1;
761 y = (2.0 * (double)y / height) - 1;
769 /* GRID2D TRANSFORMATION */
777 xnew = rnew * cos(thetanew);
778 ynew = rnew * sin(thetanew);
787 xnew = rnew * cos(thetanew);
788 ynew = rnew * sin(thetanew);
791 xnew = asin(x) / PID2;
792 ynew = asin(y) / PID2;
795 rnew = asin(r) / PID2;
797 xnew = rnew * cos(thetanew);
798 ynew = rnew * sin(thetanew);
800 /* OTHER WAY: 3D MODEL */
806 *ix = width * (xnew + 1) / (2.0);
807 *iy = height * (ynew + 1) / (2.0);
810 /*****************************************************************************
811 * Z_Compute: Calculate the Z-coordinate
812 *****************************************************************************/
813 static float Z_Compute(float p, int distortion, float x, float y)
816 double d_p = p / 100.0;
823 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));
825 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));
829 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));
831 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));
835 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));
837 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));
839 /* OTHER WAY: GRID2D TRANSFORMATION */
856 /*****************************************************************************
857 * DisplayVideo: displays previously rendered output
858 *****************************************************************************/
859 static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
861 vout_sys_t *p_sys = p_vout->p_sys;
862 float f_width, f_height, f_x, f_y;
864 if( p_sys->p_vout->pf_lock &&
865 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
867 msg_Warn( p_vout, "could not lock OpenGL provider" );
871 /* glTexCoord works differently with GL_TEXTURE_2D and
872 GL_TEXTURE_RECTANGLE_EXT */
874 f_x = (float)p_vout->fmt_out.i_x_offset;
875 f_y = (float)p_vout->fmt_out.i_y_offset;
876 f_width = (float)p_vout->fmt_out.i_x_offset +
877 (float)p_vout->fmt_out.i_visible_width;
878 f_height = (float)p_vout->fmt_out.i_y_offset +
879 (float)p_vout->fmt_out.i_visible_height;
881 f_x = (float)p_vout->fmt_out.i_x_offset / p_sys->i_tex_width;
882 f_y = (float)p_vout->fmt_out.i_y_offset / p_sys->i_tex_height;
883 f_width = ( (float)p_vout->fmt_out.i_x_offset +
884 p_vout->fmt_out.i_visible_width ) / p_sys->i_tex_width;
885 f_height = ( (float)p_vout->fmt_out.i_y_offset +
886 p_vout->fmt_out.i_visible_height ) / p_sys->i_tex_height;
889 /* Why drawing here and not in Render()? Because this way, the
890 OpenGL providers can call pf_display to force redraw. Currently,
891 the OS X provider uses it to get a smooth window resizing */
893 glClear( GL_COLOR_BUFFER_BIT );
895 if( p_sys->i_effect == OPENGL_EFFECT_NONE )
897 glEnable( VLCGL_TARGET );
898 glBegin( GL_POLYGON );
899 glTexCoord2f( f_x, f_y ); glVertex2f( -1.0, 1.0 );
900 glTexCoord2f( f_width, f_y ); glVertex2f( 1.0, 1.0 );
901 glTexCoord2f( f_width, f_height ); glVertex2f( 1.0, -1.0 );
902 glTexCoord2f( f_x, f_height ); glVertex2f( -1.0, -1.0 );
906 #ifdef OPENGL_MORE_EFFECT
907 if ((p_sys->i_effect > OPENGL_EFFECT_TRANSPARENT_CUBE) ||
908 ((p_sys->i_effect == OPENGL_EFFECT_NONE)))
910 unsigned int i_i, i_j;
911 unsigned int i_accuracy = config_GetInt( p_vout, "opengl-accuracy");
912 unsigned int i_n = pow(2, i_accuracy);
913 unsigned int i_n_x = (p_vout->fmt_out.i_visible_width / (i_n * 2));
914 unsigned int i_n_y = (p_vout->fmt_out.i_visible_height / i_n);
916 int i_distortion = p_sys->i_effect;
917 float f_p = p_sys->f_radius;
919 glEnable( VLCGL_TARGET );
921 for (i_i = 0; i_i < p_vout->fmt_out.i_visible_width; i_i += i_n_x)
923 if ( i_i == i_n_x * i_n / 2) i_n_x += p_vout->fmt_out.i_visible_width % i_n;
924 if ((i_i == (p_vout->fmt_out.i_visible_width / i_n) * i_n / 2 + i_n_x) &&
925 (p_vout->fmt_out.i_visible_width / i_n != i_n_x))
926 i_n_x -= p_vout->fmt_out.i_visible_width % i_n;
931 for (i_j = 0; i_j < p_vout->fmt_out.i_visible_height; i_j += i_n_y)
933 if ( i_j == i_n_y * i_n / 2) i_n_y += p_vout->fmt_out.i_visible_height % i_n;
934 if ((i_j == (p_vout->fmt_out.i_visible_height / i_n) * i_n / 2 + i_n_y) &&
935 (p_vout->fmt_out.i_visible_height / i_n != i_n_y))
936 i_n_y -= p_vout->fmt_out.i_visible_height % i_n;
938 for (i_m = i_index_max; i_m < i_index_max + 4; i_m++)
940 int i_k = ((i_m % 4) == 1) || ((i_m % 4) == 2);
941 int i_l = ((i_m % 4) == 2) || ((i_m % 4) == 3);
943 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);
944 glTexCoord2f(f_x + d_x, f_y + d_y);
945 d_x = - 1.0 + 2.0 * ((double)(i_k * i_n_x + i_i) / (double)p_vout->fmt_out.i_visible_width);
946 d_y = 1.0 - 2.0 * (((double)i_l * i_n_y + i_j) / (double)p_vout->fmt_out.i_visible_height);
947 glVertex3f((float)d_x, (float)d_y, Z_Compute(f_p, i_distortion, (float)d_x, (float)d_y));
956 glRotatef( 0.5 * p_sys->f_speed , 0.3, 0.5, 0.7 );
958 glEnable( VLCGL_TARGET );
962 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, 1.0 );
963 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, 1.0 );
964 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, 1.0 );
965 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, 1.0 );
968 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
969 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
970 glTexCoord2f( f_width, f_height ); glVertex3f( - 1.0, - 1.0, 1.0 );
971 glTexCoord2f( f_width, f_y ); glVertex3f( - 1.0, 1.0, 1.0 );
974 glTexCoord2f( f_x, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
975 glTexCoord2f( f_x, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
976 glTexCoord2f( f_width, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
977 glTexCoord2f( f_width, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
980 glTexCoord2f( f_x, f_y ); glVertex3f( 1.0, 1.0, 1.0 );
981 glTexCoord2f( f_x, f_height ); glVertex3f( 1.0, - 1.0, 1.0 );
982 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
983 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
986 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
987 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, 1.0, 1.0 );
988 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, 1.0, 1.0 );
989 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
992 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, - 1.0, 1.0 );
993 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
994 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
995 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, - 1.0, 1.0 );
999 glDisable( VLCGL_TARGET );
1001 p_sys->p_vout->pf_swap( p_sys->p_vout );
1003 if( p_sys->p_vout->pf_unlock )
1005 p_sys->p_vout->pf_unlock( p_sys->p_vout );
1009 int GetAlignedSize( int i_size )
1011 /* Return the nearest power of 2 */
1013 while( i_result < i_size )
1020 /*****************************************************************************
1021 * Control: control facility for the vout
1022 *****************************************************************************/
1023 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
1025 vout_sys_t *p_sys = p_vout->p_sys;
1030 return vout_vaControlDefault( p_vout, i_query, args );
1033 if( p_sys->p_vout->pf_control )
1034 return p_sys->p_vout->pf_control( p_sys->p_vout, i_query, args );
1036 return vout_vaControlDefault( p_vout, i_query, args );
1040 static int InitTextures( vout_thread_t *p_vout )
1042 vout_sys_t *p_sys = p_vout->p_sys;
1045 glDeleteTextures( 2, p_sys->p_textures );
1046 glGenTextures( 2, p_sys->p_textures );
1048 for( i_index = 0; i_index < 2; i_index++ )
1050 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_index] );
1052 /* Set the texture parameters */
1053 glTexParameterf( VLCGL_TARGET, GL_TEXTURE_PRIORITY, 1.0 );
1055 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
1056 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
1058 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
1059 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
1061 glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
1064 /* Tell the driver not to make a copy of the texture but to use
1066 glEnable( GL_UNPACK_CLIENT_STORAGE_APPLE );
1067 glPixelStorei( GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE );
1070 /* Use VRAM texturing */
1071 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1072 GL_STORAGE_CACHED_APPLE );
1074 /* Use AGP texturing */
1075 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1076 GL_STORAGE_SHARED_APPLE );
1080 /* Call glTexImage2D only once, and use glTexSubImage2D later */
1081 glTexImage2D( VLCGL_TARGET, 0, 3, p_sys->i_tex_width,
1082 p_sys->i_tex_height, 0, VLCGL_FORMAT, VLCGL_TYPE,
1083 p_sys->pp_buffer[i_index] );
1089 /*****************************************************************************
1090 * SendEvents: forward mouse and keyboard events to the parent p_vout
1091 *****************************************************************************/
1092 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
1093 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
1095 return var_Set( (vlc_object_t *)_p_vout, psz_var, newval );