1 /*****************************************************************************
2 * opengl.c: OpenGL video output
3 *****************************************************************************
4 * Copyright (C) 2004 the VideoLAN team
7 * Authors: Cyril Deguet <asmax@videolan.org>
8 * Gildas Bazin <gbazin@videolan.org>
9 * Eric Petit <titer@m0k.org>
10 * Cedric Cocquebert <cedric.cocquebert@supelec.fr>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
25 *****************************************************************************/
27 /*****************************************************************************
29 *****************************************************************************/
30 #include <errno.h> /* ENOMEM */
31 #include <stdlib.h> /* malloc(), free() */
38 #include <OpenGL/gl.h>
39 #include <OpenGL/glext.h>
41 /* On OS X, use GL_TEXTURE_RECTANGLE_EXT instead of GL_TEXTURE_2D.
42 This allows sizes which are not powers of 2 */
43 #define VLCGL_TARGET GL_TEXTURE_RECTANGLE_EXT
45 /* OS X OpenGL supports YUV. Hehe. */
46 #define VLCGL_FORMAT GL_YCBCR_422_APPLE
47 #define VLCGL_TYPE GL_UNSIGNED_SHORT_8_8_APPLE
51 #define VLCGL_TARGET GL_TEXTURE_2D
54 #ifndef GL_UNSIGNED_SHORT_5_6_5
55 #define GL_UNSIGNED_SHORT_5_6_5 0x8363
57 //#define VLCGL_RGB_FORMAT GL_RGB
58 //#define VLCGL_RGB_TYPE GL_UNSIGNED_SHORT_5_6_5
61 //#define VLCGL_RGB_FORMAT GL_RGB
62 //#define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
65 #define VLCGL_RGB_FORMAT GL_RGBA
66 #define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
70 #define YCBCR_MESA 0x8757
72 #ifndef UNSIGNED_SHORT_8_8_MESA
73 #define UNSIGNED_SHORT_8_8_MESA 0x85BA
75 #define VLCGL_YUV_FORMAT YCBCR_MESA
76 #define VLCGL_YUV_TYPE UNSIGNED_SHORT_8_8_MESA
78 /* Use RGB on Win32/GLX */
79 #define VLCGL_FORMAT VLCGL_RGB_FORMAT
80 #define VLCGL_TYPE VLCGL_RGB_TYPE
81 //#define VLCGL_FORMAT VLCGL_YUV_FORMAT
82 //#define VLCGL_TYPE VLCGL_YUV_TYPE
85 #ifndef GL_CLAMP_TO_EDGE
86 # define GL_CLAMP_TO_EDGE 0x812F
90 #define OPENGL_EFFECT_NONE 1
91 #define OPENGL_EFFECT_CUBE 2
92 #define OPENGL_EFFECT_TRANSPARENT_CUBE 4
93 #if defined( HAVE_GL_GLU_H ) || defined( __APPLE__ )
94 #define OPENGL_MORE_EFFECT 8
97 #ifdef OPENGL_MORE_EFFECT
100 #include <OpenGL/glu.h>
108 /*GRID2D TRANSFORMATION */
115 #define INIFILE 4096 // not used, just for mark end ...
116 #define SIGN(x) (x < 0 ? (-1) : 1)
117 #define PID2 1.570796326794896619231322
119 static const char *ppsz_effects[] = {
120 "none", "cube", "transparent-cube", "cylinder", "torus", "sphere","SQUAREXY","SQUARER", "ASINXY", "ASINR", "SINEXY", "SINER" };
121 static const char *ppsz_effects_text[] = {
122 N_("None"), N_("Cube"), N_("Transparent Cube"),
123 N_("Cylinder"), N_("Torus"), N_("Sphere"), N_("SQUAREXY"),N_("SQUARER"), N_("ASINXY"), N_("ASINR"), N_("SINEXY"), N_("SINER") };
126 /*****************************************************************************
128 *****************************************************************************/
129 static int CreateVout ( vlc_object_t * );
130 static void DestroyVout ( vlc_object_t * );
131 static int Init ( vout_thread_t * );
132 static void End ( vout_thread_t * );
133 static int Manage ( vout_thread_t * );
134 static void Render ( vout_thread_t *, picture_t * );
135 static void DisplayVideo ( vout_thread_t *, picture_t * );
136 static int Control ( vout_thread_t *, int, va_list );
138 static inline int GetAlignedSize( int );
140 static int InitTextures ( vout_thread_t * );
141 static int SendEvents ( vlc_object_t *, char const *,
142 vlc_value_t, vlc_value_t, void * );
144 #ifdef OPENGL_MORE_EFFECT
145 static float Z_Compute ( float, int, float, float );
146 static void Transform ( float, int, float, float, int, int, int, int, double *, double * );
148 /*****************************************************************************
150 *****************************************************************************/
151 #define ACCURACY_TEXT N_( "OpenGL sampling accuracy " )
152 #define ACCURACY_LONGTEXT N_( "Select the accuracy of 3D object sampling(1 = min and 10 = max)" )
153 #define RADIUS_TEXT N_( "OpenGL Cylinder radius" )
154 #define RADIUS_LONGTEXT N_( "Radius of the OpenGL cylinder effect, if enabled" )
155 #define POV_X_TEXT N_("Point of view x-coordinate")
156 #define POV_X_LONGTEXT N_("Point of view (X coordinate) of the cube/cylinder "\
157 "effect, if enabled.")
158 #define POV_Y_TEXT N_("Point of view y-coordinate")
159 #define POV_Y_LONGTEXT N_("Point of view (Y coordinate) of the cube/cylinder "\
160 "effect, if enabled.")
161 #define POV_Z_TEXT N_("Point of view z-coordinate")
162 #define POV_Z_LONGTEXT N_("Point of view (Z coordinate) of the cube/cylinder "\
163 "effect, if enabled.")
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 set_callbacks( CreateVout, DestroyVout );
206 add_string( "opengl-effect", "none", NULL, EFFECT_TEXT,
207 EFFECT_LONGTEXT, VLC_FALSE );
208 change_string_list( ppsz_effects, ppsz_effects_text, 0 );
211 /*****************************************************************************
212 * vout_sys_t: video output method descriptor
213 *****************************************************************************
214 * This structure is part of the video output thread descriptor.
215 * It describes the OpenGL specific properties of the output thread.
216 *****************************************************************************/
219 vout_thread_t *p_vout;
221 uint8_t *pp_buffer[2];
225 GLuint p_textures[2];
233 /*****************************************************************************
234 * CreateVout: This function allocates and initializes the OpenGL vout method.
235 *****************************************************************************/
236 static int CreateVout( vlc_object_t *p_this )
238 vout_thread_t *p_vout = (vout_thread_t *)p_this;
241 /* Allocate structure */
242 p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
245 msg_Err( p_vout, "out of memory" );
249 var_Create( p_vout, "opengl-effect", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
253 p_sys->i_tex_width = p_vout->fmt_in.i_width;
254 p_sys->i_tex_height = p_vout->fmt_in.i_height;
256 /* A texture must have a size aligned on a power of 2 */
257 p_sys->i_tex_width = GetAlignedSize( p_vout->fmt_in.i_width );
258 p_sys->i_tex_height = GetAlignedSize( p_vout->fmt_in.i_height );
261 msg_Dbg( p_vout, "Texture size: %dx%d", p_sys->i_tex_width,
262 p_sys->i_tex_height );
266 (vout_thread_t *)vlc_object_create( p_this, VLC_OBJECT_OPENGL );
267 if( p_sys->p_vout == NULL )
269 msg_Err( p_vout, "out of memory" );
272 vlc_object_attach( p_sys->p_vout, p_this );
274 p_sys->p_vout->i_window_width = p_vout->i_window_width;
275 p_sys->p_vout->i_window_height = p_vout->i_window_height;
276 p_sys->p_vout->b_fullscreen = p_vout->b_fullscreen;
277 p_sys->p_vout->render.i_width = p_vout->render.i_width;
278 p_sys->p_vout->render.i_height = p_vout->render.i_height;
279 p_sys->p_vout->render.i_aspect = p_vout->render.i_aspect;
280 p_sys->p_vout->fmt_render = p_vout->fmt_render;
281 p_sys->p_vout->fmt_in = p_vout->fmt_in;
282 p_sys->p_vout->b_scale = p_vout->b_scale;
283 p_sys->p_vout->i_alignment = p_vout->i_alignment;
285 p_sys->p_vout->p_module =
286 module_Need( p_sys->p_vout, "opengl provider", NULL, 0 );
287 if( p_sys->p_vout->p_module == NULL )
289 msg_Warn( p_vout, "No OpenGL provider found" );
290 vlc_object_detach( p_sys->p_vout );
291 vlc_object_destroy( p_sys->p_vout );
295 p_sys->f_speed = var_CreateGetFloat( p_vout, "opengl-cube-speed" );
296 p_sys->f_radius = var_CreateGetFloat( p_vout, "opengl-cylinder-radius" );
298 p_vout->pf_init = Init;
299 p_vout->pf_end = End;
300 p_vout->pf_manage = Manage;
301 p_vout->pf_render = Render;
302 p_vout->pf_display = DisplayVideo;
303 p_vout->pf_control = Control;
305 /* Forward events from the opengl provider */
306 var_Create( p_sys->p_vout, "mouse-x", VLC_VAR_INTEGER );
307 var_Create( p_sys->p_vout, "mouse-y", VLC_VAR_INTEGER );
308 var_Create( p_sys->p_vout, "mouse-moved", VLC_VAR_BOOL );
309 var_Create( p_sys->p_vout, "mouse-clicked", VLC_VAR_INTEGER );
310 var_Create( p_sys->p_vout, "mouse-button-down", VLC_VAR_INTEGER );
311 var_Create( p_sys->p_vout, "video-on-top",
312 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
314 var_AddCallback( p_sys->p_vout, "mouse-x", SendEvents, p_vout );
315 var_AddCallback( p_sys->p_vout, "mouse-y", SendEvents, p_vout );
316 var_AddCallback( p_sys->p_vout, "mouse-moved", SendEvents, p_vout );
317 var_AddCallback( p_sys->p_vout, "mouse-clicked", SendEvents, p_vout );
318 var_AddCallback( p_sys->p_vout, "mouse-button-down", SendEvents, p_vout );
323 /*****************************************************************************
324 * Init: initialize the OpenGL video thread output method
325 *****************************************************************************/
326 static int Init( vout_thread_t *p_vout )
328 vout_sys_t *p_sys = p_vout->p_sys;
332 p_sys->p_vout->pf_init( p_sys->p_vout );
334 /* TODO: We use YCbCr on Mac which is Y422, but on OSX it seems to == YUY2. Verify */
335 #if ( defined( WORDS_BIGENDIAN ) && VLCGL_FORMAT == GL_YCBCR_422_APPLE ) || (VLCGL_FORMAT == YCBCR_MESA)
336 p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
339 #elif (VLCGL_FORMAT == GL_YCBCR_422_APPLE)
340 p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
343 #elif VLCGL_FORMAT == GL_RGB
344 # if VLCGL_TYPE == GL_UNSIGNED_BYTE
345 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
346 # if defined( WORDS_BIGENDIAN )
347 p_vout->output.i_rmask = 0x00ff0000;
348 p_vout->output.i_gmask = 0x0000ff00;
349 p_vout->output.i_bmask = 0x000000ff;
351 p_vout->output.i_rmask = 0x000000ff;
352 p_vout->output.i_gmask = 0x0000ff00;
353 p_vout->output.i_bmask = 0x00ff0000;
357 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
358 # if defined( WORDS_BIGENDIAN )
359 p_vout->output.i_rmask = 0x001f;
360 p_vout->output.i_gmask = 0x07e0;
361 p_vout->output.i_bmask = 0xf800;
363 p_vout->output.i_rmask = 0xf800;
364 p_vout->output.i_gmask = 0x07e0;
365 p_vout->output.i_bmask = 0x001f;
370 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
371 # if defined( WORDS_BIGENDIAN )
372 p_vout->output.i_rmask = 0xff000000;
373 p_vout->output.i_gmask = 0x00ff0000;
374 p_vout->output.i_bmask = 0x0000ff00;
376 p_vout->output.i_rmask = 0x000000ff;
377 p_vout->output.i_gmask = 0x0000ff00;
378 p_vout->output.i_bmask = 0x00ff0000;
383 /* Since OpenGL can do rescaling for us, stick to the default
384 * coordinates and aspect. */
385 p_vout->output.i_width = p_vout->render.i_width;
386 p_vout->output.i_height = p_vout->render.i_height;
387 p_vout->output.i_aspect = p_vout->render.i_aspect;
389 p_vout->fmt_out = p_vout->fmt_in;
390 p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
392 /* We know the chroma, allocate one buffer which will be used
393 * directly by the decoder */
394 p_sys->pp_buffer[0] =
395 malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
396 if( !p_sys->pp_buffer[0] )
398 msg_Err( p_vout, "out of memory" );
401 p_sys->pp_buffer[1] =
402 malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
403 if( !p_sys->pp_buffer[1] )
405 msg_Err( p_vout, "out of memory" );
409 p_vout->p_picture[0].i_planes = 1;
410 p_vout->p_picture[0].p->p_pixels = p_sys->pp_buffer[0];
411 p_vout->p_picture[0].p->i_lines = p_vout->output.i_height;
412 p_vout->p_picture[0].p->i_visible_lines = p_vout->output.i_height;
413 p_vout->p_picture[0].p->i_pixel_pitch = i_pixel_pitch;
414 p_vout->p_picture[0].p->i_pitch = p_vout->output.i_width *
415 p_vout->p_picture[0].p->i_pixel_pitch;
416 p_vout->p_picture[0].p->i_visible_pitch = p_vout->output.i_width *
417 p_vout->p_picture[0].p->i_pixel_pitch;
419 p_vout->p_picture[0].i_status = DESTROYED_PICTURE;
420 p_vout->p_picture[0].i_type = DIRECT_PICTURE;
422 PP_OUTPUTPICTURE[ 0 ] = &p_vout->p_picture[0];
424 I_OUTPUTPICTURES = 1;
426 if( p_sys->p_vout->pf_lock &&
427 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
429 msg_Warn( p_vout, "could not lock OpenGL provider" );
433 InitTextures( p_vout );
436 glDisable(GL_DEPTH_TEST);
437 glDepthMask(GL_FALSE);
438 glDisable(GL_CULL_FACE);
439 glClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
440 glClear( GL_COLOR_BUFFER_BIT );
442 /* Check if the user asked for useless visual effects */
443 var_Get( p_vout, "opengl-effect", &val );
444 if( !val.psz_string || !strcmp( val.psz_string, "none" ))
446 p_sys->i_effect = OPENGL_EFFECT_NONE;
448 else if( !strcmp( val.psz_string, "cube" ) )
450 p_sys->i_effect = OPENGL_EFFECT_CUBE;
452 glEnable( GL_CULL_FACE);
454 else if( !strcmp( val.psz_string, "transparent-cube" ) )
456 p_sys->i_effect = OPENGL_EFFECT_TRANSPARENT_CUBE;
458 glDisable( GL_DEPTH_TEST );
459 glEnable( GL_BLEND );
460 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
464 #ifdef OPENGL_MORE_EFFECT
466 while (( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]) ) && (pow(2,p_sys->i_effect) < INIFILE))
470 if (pow(2,p_sys->i_effect) < INIFILE)
471 p_sys->i_effect = pow(2,p_sys->i_effect);
472 else if ( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]))
474 msg_Warn( p_vout, "no valid opengl effect provided, using "
476 p_sys->i_effect = OPENGL_EFFECT_NONE;
479 msg_Warn( p_vout, "no valid opengl effect provided, using "
481 p_sys->i_effect = OPENGL_EFFECT_NONE;
484 if( val.psz_string ) free( val.psz_string );
486 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
487 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
489 /* Set the perpective */
490 glMatrixMode( GL_PROJECTION );
492 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
493 glMatrixMode( GL_MODELVIEW );
495 glTranslatef( 0.0, 0.0, - 5.0 );
497 #ifdef OPENGL_MORE_EFFECT
500 /* Set the perpective */
501 glMatrixMode( GL_PROJECTION );
503 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
504 glMatrixMode( GL_MODELVIEW );
506 glTranslatef( 0.0, 0.0, -3.0 );
508 float f_pov_x, f_pov_y, f_pov_z;
509 f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
510 f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
511 f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
512 gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
515 if( p_sys->p_vout->pf_unlock )
517 p_sys->p_vout->pf_unlock( p_sys->p_vout );
523 /*****************************************************************************
524 * End: terminate GLX video thread output method
525 *****************************************************************************/
526 static void End( vout_thread_t *p_vout )
528 vout_sys_t *p_sys = p_vout->p_sys;
530 if( p_sys->p_vout->pf_lock &&
531 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
533 msg_Warn( p_vout, "could not lock OpenGL provider" );
540 /* Free the texture buffer*/
541 glDeleteTextures( 2, p_sys->p_textures );
542 if( p_sys->pp_buffer[0] ) free( p_sys->pp_buffer[0] );
543 if( p_sys->pp_buffer[1] ) free( p_sys->pp_buffer[1] );
545 if( p_sys->p_vout->pf_unlock )
547 p_sys->p_vout->pf_unlock( p_sys->p_vout );
551 /*****************************************************************************
552 * Destroy: destroy GLX video thread output method
553 *****************************************************************************
554 * Terminate an output method created by CreateVout
555 *****************************************************************************/
556 static void DestroyVout( vlc_object_t *p_this )
558 vout_thread_t *p_vout = (vout_thread_t *)p_this;
559 vout_sys_t *p_sys = p_vout->p_sys;
561 module_Unneed( p_sys->p_vout, p_sys->p_vout->p_module );
562 vlc_object_detach( p_sys->p_vout );
563 vlc_object_destroy( p_sys->p_vout );
568 /*****************************************************************************
569 * Manage: handle Sys events
570 *****************************************************************************
571 * This function should be called regularly by video output thread. It returns
572 * a non null value if an error occurred.
573 *****************************************************************************/
574 static int Manage( vout_thread_t *p_vout )
576 vout_sys_t *p_sys = p_vout->p_sys;
577 int i_ret, i_fullscreen_change;
579 i_fullscreen_change = ( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE );
581 p_vout->fmt_out.i_x_offset = p_sys->p_vout->fmt_in.i_x_offset =
582 p_vout->fmt_in.i_x_offset;
583 p_vout->fmt_out.i_y_offset = p_sys->p_vout->fmt_in.i_y_offset =
584 p_vout->fmt_in.i_y_offset;
585 p_vout->fmt_out.i_visible_width = p_sys->p_vout->fmt_in.i_visible_width =
586 p_vout->fmt_in.i_visible_width;
587 p_vout->fmt_out.i_visible_height = p_sys->p_vout->fmt_in.i_visible_height =
588 p_vout->fmt_in.i_visible_height;
589 p_vout->fmt_out.i_aspect = p_sys->p_vout->fmt_in.i_aspect =
590 p_vout->fmt_in.i_aspect;
591 p_vout->fmt_out.i_sar_num = p_sys->p_vout->fmt_in.i_sar_num =
592 p_vout->fmt_in.i_sar_num;
593 p_vout->fmt_out.i_sar_den = p_sys->p_vout->fmt_in.i_sar_den =
594 p_vout->fmt_in.i_sar_den;
595 p_vout->output.i_aspect = p_vout->fmt_in.i_aspect;
597 p_sys->p_vout->i_changes = p_vout->i_changes;
598 i_ret = p_sys->p_vout->pf_manage( p_sys->p_vout );
599 p_vout->i_changes = p_sys->p_vout->i_changes;
602 if( p_sys->p_vout->pf_lock &&
603 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
605 msg_Warn( p_vout, "could not lock OpenGL provider" );
609 /* On OS X, we create the window and the GL view when entering
610 fullscreen - the textures have to be inited again */
611 if( i_fullscreen_change )
613 InitTextures( p_vout );
615 switch( p_sys->i_effect )
617 case OPENGL_EFFECT_CUBE:
618 #ifdef OPENGL_MORE_EFFECT
629 glEnable( GL_CULL_FACE );
632 case OPENGL_EFFECT_TRANSPARENT_CUBE:
633 glDisable( GL_DEPTH_TEST );
634 glEnable( GL_BLEND );
635 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
639 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
640 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
642 /* Set the perpective */
643 glMatrixMode( GL_PROJECTION );
645 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
646 glMatrixMode( GL_MODELVIEW );
648 glTranslatef( 0.0, 0.0, - 5.0 );
650 #ifdef OPENGL_MORE_EFFECT
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, -3.0 );
660 float f_pov_x, f_pov_y, f_pov_z;
661 f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
662 f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
663 f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
664 gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
669 if( p_sys->p_vout->pf_unlock )
671 p_sys->p_vout->pf_unlock( p_sys->p_vout );
678 /*****************************************************************************
679 * Render: render previously calculated output
680 *****************************************************************************/
681 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
683 vout_sys_t *p_sys = p_vout->p_sys;
685 /* On Win32/GLX, we do this the usual way:
686 + Fill the buffer with new content,
687 + Reload the texture,
690 On OS X with VRAM or AGP texturing, the order has to be:
691 + Reload the texture,
692 + Fill the buffer with new content,
695 (Thanks to gcc from the Arstechnica forums for the tip)
697 Therefore, we have to use two buffers and textures. On Win32/GLX,
698 we reload the texture to be displayed and use it right away. On
699 OS X, we first render, then reload the texture to be used next
702 if( p_sys->p_vout->pf_lock &&
703 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
705 msg_Warn( p_vout, "could not lock OpenGL provider" );
711 i_new_index = ( p_sys->i_index + 1 ) & 1;
714 /* Update the texture */
715 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_new_index] );
716 glTexSubImage2D( VLCGL_TARGET, 0, 0, 0,
717 p_vout->fmt_out.i_width,
718 p_vout->fmt_out.i_height,
719 VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[i_new_index] );
721 /* Bind to the previous texture for drawing */
722 glBindTexture( VLCGL_TARGET, p_sys->p_textures[p_sys->i_index] );
725 p_sys->i_index = i_new_index;
726 p_pic->p->p_pixels = p_sys->pp_buffer[p_sys->i_index];
729 /* Update the texture */
730 glTexSubImage2D( GL_TEXTURE_2D, 0, 0, 0,
731 p_vout->fmt_out.i_width,
732 p_vout->fmt_out.i_height,
733 VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[0] );
736 if( p_sys->p_vout->pf_unlock )
738 p_sys->p_vout->pf_unlock( p_sys->p_vout );
743 #ifdef OPENGL_MORE_EFFECT
744 /*****************************************************************************
745 * Transform: Calculate the distorted grid coordinates
746 *****************************************************************************/
747 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)
749 double x,y,xnew,ynew;
750 double r,theta,rnew,thetanew;
752 x = (double)i * (width / ((double)i_visible_width));
753 y = (double)j * (height / ((double)i_visible_height));
755 x = (2.0 * (double)x / width) - 1;
756 y = (2.0 * (double)y / height) - 1;
764 /* GRID2D TRANSFORMATION */
772 xnew = rnew * cos(thetanew);
773 ynew = rnew * sin(thetanew);
782 xnew = rnew * cos(thetanew);
783 ynew = rnew * sin(thetanew);
786 xnew = asin(x) / PID2;
787 ynew = asin(y) / PID2;
790 rnew = asin(r) / PID2;
792 xnew = rnew * cos(thetanew);
793 ynew = rnew * sin(thetanew);
795 /* OTHER WAY: 3D MODEL */
801 *ix = width * (xnew + 1) / (2.0);
802 *iy = height * (ynew + 1) / (2.0);
805 /*****************************************************************************
806 * Z_Compute: Calculate the Z-coordinate
807 *****************************************************************************/
808 static float Z_Compute(float p, int distortion, float x, float y)
811 double d_p = p / 100.0;
818 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));
820 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));
824 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));
826 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));
830 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));
832 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));
834 /* OTHER WAY: GRID2D TRANSFORMATION */
851 /*****************************************************************************
852 * DisplayVideo: displays previously rendered output
853 *****************************************************************************/
854 static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
856 vout_sys_t *p_sys = p_vout->p_sys;
857 float f_width, f_height, f_x, f_y;
859 if( p_sys->p_vout->pf_lock &&
860 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
862 msg_Warn( p_vout, "could not lock OpenGL provider" );
866 /* glTexCoord works differently with GL_TEXTURE_2D and
867 GL_TEXTURE_RECTANGLE_EXT */
869 f_x = (float)p_vout->fmt_out.i_x_offset;
870 f_y = (float)p_vout->fmt_out.i_y_offset;
871 f_width = (float)p_vout->fmt_out.i_x_offset +
872 (float)p_vout->fmt_out.i_visible_width;
873 f_height = (float)p_vout->fmt_out.i_y_offset +
874 (float)p_vout->fmt_out.i_visible_height;
876 f_x = (float)p_vout->fmt_out.i_x_offset / p_sys->i_tex_width;
877 f_y = (float)p_vout->fmt_out.i_y_offset / p_sys->i_tex_height;
878 f_width = ( (float)p_vout->fmt_out.i_x_offset +
879 p_vout->fmt_out.i_visible_width ) / p_sys->i_tex_width;
880 f_height = ( (float)p_vout->fmt_out.i_y_offset +
881 p_vout->fmt_out.i_visible_height ) / p_sys->i_tex_height;
884 /* Why drawing here and not in Render()? Because this way, the
885 OpenGL providers can call pf_display to force redraw. Currently,
886 the OS X provider uses it to get a smooth window resizing */
888 glClear( GL_COLOR_BUFFER_BIT );
890 if( p_sys->i_effect == OPENGL_EFFECT_NONE )
892 glEnable( VLCGL_TARGET );
893 glBegin( GL_POLYGON );
894 glTexCoord2f( f_x, f_y ); glVertex2f( -1.0, 1.0 );
895 glTexCoord2f( f_width, f_y ); glVertex2f( 1.0, 1.0 );
896 glTexCoord2f( f_width, f_height ); glVertex2f( 1.0, -1.0 );
897 glTexCoord2f( f_x, f_height ); glVertex2f( -1.0, -1.0 );
901 #ifdef OPENGL_MORE_EFFECT
902 if ((p_sys->i_effect > OPENGL_EFFECT_TRANSPARENT_CUBE) ||
903 ((p_sys->i_effect == OPENGL_EFFECT_NONE)))
905 unsigned int i_i, i_j;
906 unsigned int i_accuracy = config_GetInt( p_vout, "opengl-accuracy");
907 unsigned int i_n = pow(2, i_accuracy);
908 unsigned int i_n_x = (p_vout->fmt_out.i_visible_width / (i_n * 2));
909 unsigned int i_n_y = (p_vout->fmt_out.i_visible_height / i_n);
911 int i_distortion = p_sys->i_effect;
912 float f_p = p_sys->f_radius;
914 glEnable( VLCGL_TARGET );
916 for (i_i = 0; i_i < p_vout->fmt_out.i_visible_width; i_i += i_n_x)
918 if ( i_i == i_n_x * i_n / 2) i_n_x += p_vout->fmt_out.i_visible_width % i_n;
919 if ((i_i == (p_vout->fmt_out.i_visible_width / i_n) * i_n / 2 + i_n_x) &&
920 (p_vout->fmt_out.i_visible_width / i_n != i_n_x))
921 i_n_x -= p_vout->fmt_out.i_visible_width % i_n;
926 for (i_j = 0; i_j < p_vout->fmt_out.i_visible_height; i_j += i_n_y)
928 if ( i_j == i_n_y * i_n / 2) i_n_y += p_vout->fmt_out.i_visible_height % i_n;
929 if ((i_j == (p_vout->fmt_out.i_visible_height / i_n) * i_n / 2 + i_n_y) &&
930 (p_vout->fmt_out.i_visible_height / i_n != i_n_y))
931 i_n_y -= p_vout->fmt_out.i_visible_height % i_n;
933 for (i_m = i_index_max; i_m < i_index_max + 4; i_m++)
935 int i_k = ((i_m % 4) == 1) || ((i_m % 4) == 2);
936 int i_l = ((i_m % 4) == 2) || ((i_m % 4) == 3);
938 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);
939 glTexCoord2f(f_x + d_x, f_y + d_y);
940 d_x = - 1.0 + 2.0 * ((double)(i_k * i_n_x + i_i) / (double)p_vout->fmt_out.i_visible_width);
941 d_y = 1.0 - 2.0 * (((double)i_l * i_n_y + i_j) / (double)p_vout->fmt_out.i_visible_height);
942 glVertex3f((float)d_x, (float)d_y, Z_Compute(f_p, i_distortion, (float)d_x, (float)d_y));
951 glRotatef( 0.5 * p_sys->f_speed , 0.3, 0.5, 0.7 );
953 glEnable( VLCGL_TARGET );
957 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, 1.0 );
958 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, 1.0 );
959 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, 1.0 );
960 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, 1.0 );
963 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
964 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
965 glTexCoord2f( f_width, f_height ); glVertex3f( - 1.0, - 1.0, 1.0 );
966 glTexCoord2f( f_width, f_y ); glVertex3f( - 1.0, 1.0, 1.0 );
969 glTexCoord2f( f_x, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
970 glTexCoord2f( f_x, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
971 glTexCoord2f( f_width, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
972 glTexCoord2f( f_width, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
975 glTexCoord2f( f_x, f_y ); glVertex3f( 1.0, 1.0, 1.0 );
976 glTexCoord2f( f_x, f_height ); glVertex3f( 1.0, - 1.0, 1.0 );
977 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
978 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
981 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
982 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, 1.0, 1.0 );
983 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, 1.0, 1.0 );
984 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
987 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, - 1.0, 1.0 );
988 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
989 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
990 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, - 1.0, 1.0 );
994 glDisable( VLCGL_TARGET );
996 p_sys->p_vout->pf_swap( p_sys->p_vout );
998 if( p_sys->p_vout->pf_unlock )
1000 p_sys->p_vout->pf_unlock( p_sys->p_vout );
1004 int GetAlignedSize( int i_size )
1006 /* Return the nearest power of 2 */
1008 while( i_result < i_size )
1015 /*****************************************************************************
1016 * Control: control facility for the vout
1017 *****************************************************************************/
1018 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
1020 vout_sys_t *p_sys = p_vout->p_sys;
1025 return vout_vaControlDefault( p_vout, i_query, args );
1028 if( p_sys->p_vout->pf_control )
1029 return p_sys->p_vout->pf_control( p_sys->p_vout, i_query, args );
1031 return vout_vaControlDefault( p_vout, i_query, args );
1035 static int InitTextures( vout_thread_t *p_vout )
1037 vout_sys_t *p_sys = p_vout->p_sys;
1040 glDeleteTextures( 2, p_sys->p_textures );
1041 glGenTextures( 2, p_sys->p_textures );
1043 for( i_index = 0; i_index < 2; i_index++ )
1045 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_index] );
1047 /* Set the texture parameters */
1048 glTexParameterf( VLCGL_TARGET, GL_TEXTURE_PRIORITY, 1.0 );
1050 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
1051 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
1053 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
1054 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
1056 glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
1059 /* Tell the driver not to make a copy of the texture but to use
1061 glEnable( GL_UNPACK_CLIENT_STORAGE_APPLE );
1062 glPixelStorei( GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE );
1065 /* Use VRAM texturing */
1066 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1067 GL_STORAGE_CACHED_APPLE );
1069 /* Use AGP texturing */
1070 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1071 GL_STORAGE_SHARED_APPLE );
1075 /* Call glTexImage2D only once, and use glTexSubImage2D later */
1076 glTexImage2D( VLCGL_TARGET, 0, 3, p_sys->i_tex_width,
1077 p_sys->i_tex_height, 0, VLCGL_FORMAT, VLCGL_TYPE,
1078 p_sys->pp_buffer[i_index] );
1084 /*****************************************************************************
1085 * SendEvents: forward mouse and keyboard events to the parent p_vout
1086 *****************************************************************************/
1087 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
1088 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
1090 return var_Set( (vlc_object_t *)_p_vout, psz_var, newval );