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 *****************************************************************************/
35 #include <errno.h> /* ENOMEM */
37 #include <vlc_common.h>
38 #include <vlc_plugin.h>
42 #include <OpenGL/gl.h>
43 #include <OpenGL/glext.h>
45 /* On OS X, use GL_TEXTURE_RECTANGLE_EXT instead of GL_TEXTURE_2D.
46 This allows sizes which are not powers of 2 */
47 #define VLCGL_TARGET GL_TEXTURE_RECTANGLE_EXT
49 /* OS X OpenGL supports YUV. Hehe. */
50 #define VLCGL_FORMAT GL_YCBCR_422_APPLE
51 #define VLCGL_TYPE GL_UNSIGNED_SHORT_8_8_APPLE
55 #define VLCGL_TARGET GL_TEXTURE_2D
58 #ifndef GL_UNSIGNED_SHORT_5_6_5
59 #define GL_UNSIGNED_SHORT_5_6_5 0x8363
61 //#define VLCGL_RGB_FORMAT GL_RGB
62 //#define VLCGL_RGB_TYPE GL_UNSIGNED_SHORT_5_6_5
65 //#define VLCGL_RGB_FORMAT GL_RGB
66 //#define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
69 #define VLCGL_RGB_FORMAT GL_RGBA
70 #define VLCGL_RGB_TYPE GL_UNSIGNED_BYTE
74 #define YCBCR_MESA 0x8757
76 #ifndef UNSIGNED_SHORT_8_8_MESA
77 #define UNSIGNED_SHORT_8_8_MESA 0x85BA
79 #define VLCGL_YUV_FORMAT YCBCR_MESA
80 #define VLCGL_YUV_TYPE UNSIGNED_SHORT_8_8_MESA
82 /* Use RGB on Win32/GLX */
83 #define VLCGL_FORMAT VLCGL_RGB_FORMAT
84 #define VLCGL_TYPE VLCGL_RGB_TYPE
85 //#define VLCGL_FORMAT VLCGL_YUV_FORMAT
86 //#define VLCGL_TYPE VLCGL_YUV_TYPE
89 #ifndef GL_CLAMP_TO_EDGE
90 # define GL_CLAMP_TO_EDGE 0x812F
94 #define OPENGL_EFFECT_NONE 1
95 #define OPENGL_EFFECT_CUBE 2
96 #define OPENGL_EFFECT_TRANSPARENT_CUBE 4
97 #if defined( HAVE_GL_GLU_H ) || defined( __APPLE__ )
98 #define OPENGL_MORE_EFFECT 8
101 #ifdef OPENGL_MORE_EFFECT
104 #include <OpenGL/glu.h>
112 /*GRID2D TRANSFORMATION */
119 #define INIFILE 4096 // not used, just for mark end ...
120 #define SIGN(x) (x < 0 ? (-1) : 1)
121 #define PID2 1.570796326794896619231322
123 static const char *const ppsz_effects[] = {
124 "none", "cube", "transparent-cube", "cylinder", "torus", "sphere","SQUAREXY","SQUARER", "ASINXY", "ASINR", "SINEXY", "SINER" };
125 static const char *const ppsz_effects_text[] = {
126 N_("None"), N_("Cube"), N_("Transparent Cube"),
127 N_("Cylinder"), N_("Torus"), N_("Sphere"), N_("SQUAREXY"),N_("SQUARER"), N_("ASINXY"), N_("ASINR"), N_("SINEXY"), N_("SINER") };
130 /*****************************************************************************
132 *****************************************************************************/
133 static int CreateVout ( vlc_object_t * );
134 static void DestroyVout ( vlc_object_t * );
135 static int Init ( vout_thread_t * );
136 static void End ( vout_thread_t * );
137 static int Manage ( vout_thread_t * );
138 static void Render ( vout_thread_t *, picture_t * );
139 static void DisplayVideo ( vout_thread_t *, picture_t * );
140 static int Control ( vout_thread_t *, int, va_list );
142 static inline int GetAlignedSize( int );
144 static int InitTextures ( vout_thread_t * );
145 static int SendEvents ( vlc_object_t *, char const *,
146 vlc_value_t, vlc_value_t, void * );
148 #ifdef OPENGL_MORE_EFFECT
149 static float Z_Compute ( float, int, float, float );
150 static void Transform ( int, float, float, int, int, int, int, double *, double * );
152 /*****************************************************************************
154 *****************************************************************************/
155 #define ACCURACY_TEXT N_( "OpenGL sampling accuracy " )
156 #define ACCURACY_LONGTEXT N_( "Select the accuracy of 3D object sampling(1 = min and 10 = max)" )
157 #define RADIUS_TEXT N_( "OpenGL Cylinder radius" )
158 #define RADIUS_LONGTEXT N_( "Radius of the OpenGL cylinder effect, if enabled" )
159 #define POV_X_TEXT N_("Point of view x-coordinate")
160 #define POV_X_LONGTEXT N_("Point of view (X coordinate) of the cube/cylinder "\
161 "effect, if enabled.")
162 #define POV_Y_TEXT N_("Point of view y-coordinate")
163 #define POV_Y_LONGTEXT N_("Point of view (Y coordinate) of the cube/cylinder "\
164 "effect, if enabled.")
165 #define POV_Z_TEXT N_("Point of view z-coordinate")
166 #define POV_Z_LONGTEXT N_("Point of view (Z coordinate) of the cube/cylinder "\
167 "effect, if enabled.")
169 #define PROVIDER_TEXT N_("OpenGL Provider")
170 #define PROVIDER_LONGTEXT N_("Allows you to modify what OpenGL provider should be used")
171 #define SPEED_TEXT N_( "OpenGL cube rotation speed" )
172 #define SPEED_LONGTEXT N_( "Rotation speed of the OpenGL cube effect, if " \
174 #define EFFECT_TEXT N_("Effect")
175 #define EFFECT_LONGTEXT N_( \
176 "Several visual OpenGL effects are available." )
178 #ifndef OPENGL_MORE_EFFECT
179 static const char *const ppsz_effects[] = {
180 "none", "cube", "transparent-cube" };
181 static const char *const ppsz_effects_text[] = {
182 N_("None"), N_("Cube"), N_("Transparent Cube") };
186 set_shortname( "OpenGL" );
187 set_category( CAT_VIDEO );
188 set_subcategory( SUBCAT_VIDEO_VOUT );
189 set_description( N_("OpenGL video output") );
191 set_capability( "video output", 200 );
193 set_capability( "video output", 20 );
195 add_shortcut( "opengl" );
196 add_float( "opengl-cube-speed", 2.0, NULL, SPEED_TEXT,
197 SPEED_LONGTEXT, true );
198 #ifdef OPENGL_MORE_EFFECT
199 add_integer_with_range( "opengl-accuracy", 4, 1, 10, NULL, ACCURACY_TEXT,
200 ACCURACY_LONGTEXT, true );
201 add_float_with_range( "opengl-pov-x", 0.0, -1.0, 1.0, NULL, POV_X_TEXT,
202 POV_X_LONGTEXT, true );
203 add_float_with_range( "opengl-pov-y", 0.0, -1.0, 1.0, NULL, POV_Y_TEXT,
204 POV_Y_LONGTEXT, true );
205 add_float_with_range( "opengl-pov-z", -1.0, -1.0, 1.0, NULL, POV_Z_TEXT,
206 POV_Z_LONGTEXT, true );
207 add_float( "opengl-cylinder-radius", -100.0, NULL, RADIUS_TEXT,
208 RADIUS_LONGTEXT, true );
211 /* Allow opengl provider plugin selection */
212 add_string( "opengl-provider", "default", NULL, PROVIDER_TEXT,
213 PROVIDER_LONGTEXT, true );
214 set_callbacks( CreateVout, DestroyVout );
215 add_string( "opengl-effect", "none", NULL, EFFECT_TEXT,
216 EFFECT_LONGTEXT, false );
217 change_string_list( ppsz_effects, ppsz_effects_text, 0 );
220 /*****************************************************************************
221 * vout_sys_t: video output method descriptor
222 *****************************************************************************
223 * This structure is part of the video output thread descriptor.
224 * It describes the OpenGL specific properties of the output thread.
225 *****************************************************************************/
228 vout_thread_t *p_vout;
230 uint8_t *pp_buffer[2];
234 GLuint p_textures[2];
242 /*****************************************************************************
243 * CreateVout: This function allocates and initializes the OpenGL vout method.
244 *****************************************************************************/
245 static int CreateVout( vlc_object_t *p_this )
247 vout_thread_t *p_vout = (vout_thread_t *)p_this;
251 /* Allocate structure */
252 p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
256 var_Create( p_vout, "opengl-effect", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
260 p_sys->i_tex_width = p_vout->fmt_in.i_width;
261 p_sys->i_tex_height = p_vout->fmt_in.i_height;
263 /* A texture must have a size aligned on a power of 2 */
264 p_sys->i_tex_width = GetAlignedSize( p_vout->fmt_in.i_width );
265 p_sys->i_tex_height = GetAlignedSize( p_vout->fmt_in.i_height );
268 msg_Dbg( p_vout, "Texture size: %dx%d", p_sys->i_tex_width,
269 p_sys->i_tex_height );
273 (vout_thread_t *)vlc_object_create( p_this, sizeof( vout_thread_t ) );
274 if( p_sys->p_vout == NULL )
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_release( 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 p_sys->pp_buffer[1] =
409 malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
410 if( !p_sys->pp_buffer[1] )
413 p_vout->p_picture[0].i_planes = 1;
414 p_vout->p_picture[0].p->p_pixels = p_sys->pp_buffer[0];
415 p_vout->p_picture[0].p->i_lines = p_vout->output.i_height;
416 p_vout->p_picture[0].p->i_visible_lines = p_vout->output.i_height;
417 p_vout->p_picture[0].p->i_pixel_pitch = i_pixel_pitch;
418 p_vout->p_picture[0].p->i_pitch = p_vout->output.i_width *
419 p_vout->p_picture[0].p->i_pixel_pitch;
420 p_vout->p_picture[0].p->i_visible_pitch = p_vout->output.i_width *
421 p_vout->p_picture[0].p->i_pixel_pitch;
423 p_vout->p_picture[0].i_status = DESTROYED_PICTURE;
424 p_vout->p_picture[0].i_type = DIRECT_PICTURE;
426 PP_OUTPUTPICTURE[ 0 ] = &p_vout->p_picture[0];
428 I_OUTPUTPICTURES = 1;
430 if( p_sys->p_vout->pf_lock &&
431 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
433 msg_Warn( p_vout, "could not lock OpenGL provider" );
437 InitTextures( p_vout );
440 glDisable(GL_DEPTH_TEST);
441 glDepthMask(GL_FALSE);
442 glDisable(GL_CULL_FACE);
443 glClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
444 glClear( GL_COLOR_BUFFER_BIT );
446 /* Check if the user asked for useless visual effects */
447 var_Get( p_vout, "opengl-effect", &val );
448 if( !val.psz_string || !strcmp( val.psz_string, "none" ))
450 p_sys->i_effect = OPENGL_EFFECT_NONE;
452 else if( !strcmp( val.psz_string, "cube" ) )
454 p_sys->i_effect = OPENGL_EFFECT_CUBE;
456 glEnable( GL_CULL_FACE);
458 else if( !strcmp( val.psz_string, "transparent-cube" ) )
460 p_sys->i_effect = OPENGL_EFFECT_TRANSPARENT_CUBE;
462 glDisable( GL_DEPTH_TEST );
463 glEnable( GL_BLEND );
464 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
468 #ifdef OPENGL_MORE_EFFECT
469 long i, size = sizeof(ppsz_effects)/sizeof(*ppsz_effects);
470 p_sys->i_effect = OPENGL_EFFECT_NONE;
472 for(i = 3; i < size; i++)
474 if(!strcmp( val.psz_string, ppsz_effects[i]))
476 p_sys->i_effect = 1 << i;
481 if( p_sys->i_effect == OPENGL_EFFECT_NONE )
483 msg_Warn( p_vout, "no valid opengl effect provided, using "
487 msg_Warn( p_vout, "no valid opengl effect provided, using "
489 p_sys->i_effect = OPENGL_EFFECT_NONE;
492 free( val.psz_string );
494 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
495 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
497 /* Set the perpective */
498 glMatrixMode( GL_PROJECTION );
500 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
501 glMatrixMode( GL_MODELVIEW );
503 glTranslatef( 0.0, 0.0, - 5.0 );
505 #ifdef OPENGL_MORE_EFFECT
508 /* Set the perpective */
509 glMatrixMode( GL_PROJECTION );
511 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
512 glMatrixMode( GL_MODELVIEW );
514 glTranslatef( 0.0, 0.0, -3.0 );
516 float f_pov_x, f_pov_y, f_pov_z;
517 f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
518 f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
519 f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
520 gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
523 if( p_sys->p_vout->pf_unlock )
525 p_sys->p_vout->pf_unlock( p_sys->p_vout );
531 /*****************************************************************************
532 * End: terminate GLX video thread output method
533 *****************************************************************************/
534 static void End( vout_thread_t *p_vout )
536 vout_sys_t *p_sys = p_vout->p_sys;
538 if( p_sys->p_vout->pf_lock &&
539 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
541 msg_Warn( p_vout, "could not lock OpenGL provider" );
548 /* Free the texture buffer*/
549 glDeleteTextures( 2, p_sys->p_textures );
550 free( p_sys->pp_buffer[0] );
551 free( p_sys->pp_buffer[1] );
553 if( p_sys->p_vout->pf_unlock )
555 p_sys->p_vout->pf_unlock( p_sys->p_vout );
559 /*****************************************************************************
560 * Destroy: destroy GLX video thread output method
561 *****************************************************************************
562 * Terminate an output method created by CreateVout
563 *****************************************************************************/
564 static void DestroyVout( vlc_object_t *p_this )
566 vout_thread_t *p_vout = (vout_thread_t *)p_this;
567 vout_sys_t *p_sys = p_vout->p_sys;
569 module_unneed( p_sys->p_vout, p_sys->p_vout->p_module );
570 vlc_object_release( p_sys->p_vout );
575 /*****************************************************************************
576 * Manage: handle Sys events
577 *****************************************************************************
578 * This function should be called regularly by video output thread. It returns
579 * a non null value if an error occurred.
580 *****************************************************************************/
581 static int Manage( vout_thread_t *p_vout )
583 vout_sys_t *p_sys = p_vout->p_sys;
584 int i_ret, i_fullscreen_change;
586 i_fullscreen_change = ( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE );
588 p_vout->fmt_out.i_x_offset = p_sys->p_vout->fmt_in.i_x_offset =
589 p_vout->fmt_in.i_x_offset;
590 p_vout->fmt_out.i_y_offset = p_sys->p_vout->fmt_in.i_y_offset =
591 p_vout->fmt_in.i_y_offset;
592 p_vout->fmt_out.i_visible_width = p_sys->p_vout->fmt_in.i_visible_width =
593 p_vout->fmt_in.i_visible_width;
594 p_vout->fmt_out.i_visible_height = p_sys->p_vout->fmt_in.i_visible_height =
595 p_vout->fmt_in.i_visible_height;
596 p_vout->fmt_out.i_aspect = p_sys->p_vout->fmt_in.i_aspect =
597 p_vout->fmt_in.i_aspect;
598 p_vout->fmt_out.i_sar_num = p_sys->p_vout->fmt_in.i_sar_num =
599 p_vout->fmt_in.i_sar_num;
600 p_vout->fmt_out.i_sar_den = p_sys->p_vout->fmt_in.i_sar_den =
601 p_vout->fmt_in.i_sar_den;
602 p_vout->output.i_aspect = p_vout->fmt_in.i_aspect;
604 p_sys->p_vout->i_changes = p_vout->i_changes;
605 i_ret = p_sys->p_vout->pf_manage( p_sys->p_vout );
606 p_vout->i_changes = p_sys->p_vout->i_changes;
609 if( p_sys->p_vout->pf_lock &&
610 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
612 msg_Warn( p_vout, "could not lock OpenGL provider" );
616 /* On OS X, we create the window and the GL view when entering
617 fullscreen - the textures have to be inited again */
618 if( i_fullscreen_change )
620 InitTextures( p_vout );
622 switch( p_sys->i_effect )
624 case OPENGL_EFFECT_CUBE:
625 #ifdef OPENGL_MORE_EFFECT
636 glEnable( GL_CULL_FACE );
639 case OPENGL_EFFECT_TRANSPARENT_CUBE:
640 glDisable( GL_DEPTH_TEST );
641 glEnable( GL_BLEND );
642 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
646 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
647 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
649 /* Set the perpective */
650 glMatrixMode( GL_PROJECTION );
652 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
653 glMatrixMode( GL_MODELVIEW );
655 glTranslatef( 0.0, 0.0, - 5.0 );
657 #ifdef OPENGL_MORE_EFFECT
660 glMatrixMode( GL_PROJECTION );
662 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
663 glMatrixMode( GL_MODELVIEW );
665 glTranslatef( 0.0, 0.0, -3.0 );
667 float f_pov_x, f_pov_y, f_pov_z;
668 f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
669 f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
670 f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
671 gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
676 if( p_sys->p_vout->pf_unlock )
678 p_sys->p_vout->pf_unlock( p_sys->p_vout );
681 // to align in real time in OPENGL
682 if (p_sys->p_vout->i_alignment != p_vout->i_alignment)
684 p_vout->i_changes = VOUT_CROP_CHANGE; //to force change
685 p_sys->p_vout->i_alignment = p_vout->i_alignment;
690 /*****************************************************************************
691 * Render: render previously calculated output
692 *****************************************************************************/
693 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
696 vout_sys_t *p_sys = p_vout->p_sys;
698 /* On Win32/GLX, we do this the usual way:
699 + Fill the buffer with new content,
700 + Reload the texture,
703 On OS X with VRAM or AGP texturing, the order has to be:
704 + Reload the texture,
705 + Fill the buffer with new content,
708 (Thanks to gcc from the Arstechnica forums for the tip)
710 Therefore, we have to use two buffers and textures. On Win32/GLX,
711 we reload the texture to be displayed and use it right away. On
712 OS X, we first render, then reload the texture to be used next
715 if( p_sys->p_vout->pf_lock &&
716 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
718 msg_Warn( p_vout, "could not lock OpenGL provider" );
724 i_new_index = ( p_sys->i_index + 1 ) & 1;
727 /* Update the texture */
728 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_new_index] );
729 glTexSubImage2D( VLCGL_TARGET, 0, 0, 0,
730 p_vout->fmt_out.i_width,
731 p_vout->fmt_out.i_height,
732 VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[i_new_index] );
734 /* Bind to the previous texture for drawing */
735 glBindTexture( VLCGL_TARGET, p_sys->p_textures[p_sys->i_index] );
738 p_sys->i_index = i_new_index;
739 p_pic->p->p_pixels = p_sys->pp_buffer[p_sys->i_index];
742 /* Update the texture */
743 glTexSubImage2D( GL_TEXTURE_2D, 0, 0, 0,
744 p_vout->fmt_out.i_width,
745 p_vout->fmt_out.i_height,
746 VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[0] );
749 if( p_sys->p_vout->pf_unlock )
751 p_sys->p_vout->pf_unlock( p_sys->p_vout );
756 #ifdef OPENGL_MORE_EFFECT
757 /*****************************************************************************
758 * Transform: Calculate the distorted grid coordinates
759 *****************************************************************************/
760 static void Transform( int distortion, float width, float height,int i, int j, int i_visible_width, int i_visible_height, double *ix, double *iy )
762 double x,y,xnew,ynew;
763 double r,theta,rnew,thetanew;
765 x = (double)i * (width / ((double)i_visible_width));
766 y = (double)j * (height / ((double)i_visible_height));
768 x = (2.0 * (double)x / width) - 1;
769 y = (2.0 * (double)y / height) - 1;
777 /* GRID2D TRANSFORMATION */
785 xnew = rnew * cos(thetanew);
786 ynew = rnew * sin(thetanew);
795 xnew = rnew * cos(thetanew);
796 ynew = rnew * sin(thetanew);
799 xnew = asin(x) / PID2;
800 ynew = asin(y) / PID2;
803 rnew = asin(r) / PID2;
805 xnew = rnew * cos(thetanew);
806 ynew = rnew * sin(thetanew);
808 /* OTHER WAY: 3D MODEL */
814 *ix = width * (xnew + 1) / (2.0);
815 *iy = height * (ynew + 1) / (2.0);
818 /*****************************************************************************
819 * Z_Compute: Calculate the Z-coordinate
820 *****************************************************************************/
821 static float Z_Compute(float p, int distortion, float x, float y)
824 double d_p = p / 100.0;
831 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));
833 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));
837 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));
839 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));
843 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));
845 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));
847 /* OTHER WAY: GRID2D TRANSFORMATION */
864 /*****************************************************************************
865 * DisplayVideo: displays previously rendered output
866 *****************************************************************************/
867 static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
870 vout_sys_t *p_sys = p_vout->p_sys;
871 float f_width, f_height, f_x, f_y;
873 if( p_sys->p_vout->pf_lock &&
874 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
876 msg_Warn( p_vout, "could not lock OpenGL provider" );
880 /* glTexCoord works differently with GL_TEXTURE_2D and
881 GL_TEXTURE_RECTANGLE_EXT */
883 f_x = (float)p_vout->fmt_out.i_x_offset;
884 f_y = (float)p_vout->fmt_out.i_y_offset;
885 f_width = (float)p_vout->fmt_out.i_x_offset +
886 (float)p_vout->fmt_out.i_visible_width;
887 f_height = (float)p_vout->fmt_out.i_y_offset +
888 (float)p_vout->fmt_out.i_visible_height;
890 f_x = (float)p_vout->fmt_out.i_x_offset / p_sys->i_tex_width;
891 f_y = (float)p_vout->fmt_out.i_y_offset / p_sys->i_tex_height;
892 f_width = ( (float)p_vout->fmt_out.i_x_offset +
893 p_vout->fmt_out.i_visible_width ) / p_sys->i_tex_width;
894 f_height = ( (float)p_vout->fmt_out.i_y_offset +
895 p_vout->fmt_out.i_visible_height ) / p_sys->i_tex_height;
898 /* Why drawing here and not in Render()? Because this way, the
899 OpenGL providers can call pf_display to force redraw. Currently,
900 the OS X provider uses it to get a smooth window resizing */
902 glClear( GL_COLOR_BUFFER_BIT );
904 if( p_sys->i_effect == OPENGL_EFFECT_NONE )
906 glEnable( VLCGL_TARGET );
907 glBegin( GL_POLYGON );
908 glTexCoord2f( f_x, f_y ); glVertex2f( -1.0, 1.0 );
909 glTexCoord2f( f_width, f_y ); glVertex2f( 1.0, 1.0 );
910 glTexCoord2f( f_width, f_height ); glVertex2f( 1.0, -1.0 );
911 glTexCoord2f( f_x, f_height ); glVertex2f( -1.0, -1.0 );
915 #ifdef OPENGL_MORE_EFFECT
916 if ((p_sys->i_effect > OPENGL_EFFECT_TRANSPARENT_CUBE) ||
917 ((p_sys->i_effect == OPENGL_EFFECT_NONE)))
919 unsigned int i_i, i_j;
920 unsigned int i_accuracy = config_GetInt( p_vout, "opengl-accuracy");
921 unsigned int i_n = pow(2, i_accuracy);
922 unsigned int i_n_x = (p_vout->fmt_out.i_visible_width / (i_n * 2));
923 unsigned int i_n_y = (p_vout->fmt_out.i_visible_height / i_n);
925 int i_distortion = p_sys->i_effect;
926 float f_p = p_sys->f_radius;
928 glEnable( VLCGL_TARGET );
930 for (i_i = 0; i_i < p_vout->fmt_out.i_visible_width; i_i += i_n_x)
932 if ( i_i == i_n_x * i_n / 2) i_n_x += p_vout->fmt_out.i_visible_width % i_n;
933 if ((i_i == (p_vout->fmt_out.i_visible_width / i_n) * i_n / 2 + i_n_x) &&
934 (p_vout->fmt_out.i_visible_width / i_n != i_n_x))
935 i_n_x -= p_vout->fmt_out.i_visible_width % i_n;
940 for (i_j = 0; i_j < p_vout->fmt_out.i_visible_height; i_j += i_n_y)
942 if ( i_j == i_n_y * i_n / 2) i_n_y += p_vout->fmt_out.i_visible_height % i_n;
943 if ((i_j == (p_vout->fmt_out.i_visible_height / i_n) * i_n / 2 + i_n_y) &&
944 (p_vout->fmt_out.i_visible_height / i_n != i_n_y))
945 i_n_y -= p_vout->fmt_out.i_visible_height % i_n;
947 for (i_m = i_index_max; i_m < i_index_max + 4; i_m++)
949 int i_k = ((i_m % 4) == 1) || ((i_m % 4) == 2);
950 int i_l = ((i_m % 4) == 2) || ((i_m % 4) == 3);
952 Transform( 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);
953 glTexCoord2f(f_x + d_x, f_y + d_y);
954 d_x = - 1.0 + 2.0 * ((double)(i_k * i_n_x + i_i) / (double)p_vout->fmt_out.i_visible_width);
955 d_y = 1.0 - 2.0 * (((double)i_l * i_n_y + i_j) / (double)p_vout->fmt_out.i_visible_height);
956 glVertex3f((float)d_x, (float)d_y, Z_Compute(f_p, i_distortion, (float)d_x, (float)d_y));
965 glRotatef( 0.5 * p_sys->f_speed , 0.3, 0.5, 0.7 );
967 glEnable( VLCGL_TARGET );
971 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, 1.0 );
972 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, 1.0 );
973 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, 1.0 );
974 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, 1.0 );
977 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
978 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
979 glTexCoord2f( f_width, f_height ); glVertex3f( - 1.0, - 1.0, 1.0 );
980 glTexCoord2f( f_width, f_y ); glVertex3f( - 1.0, 1.0, 1.0 );
983 glTexCoord2f( f_x, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
984 glTexCoord2f( f_x, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
985 glTexCoord2f( f_width, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
986 glTexCoord2f( f_width, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
989 glTexCoord2f( f_x, f_y ); glVertex3f( 1.0, 1.0, 1.0 );
990 glTexCoord2f( f_x, f_height ); glVertex3f( 1.0, - 1.0, 1.0 );
991 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
992 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
995 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
996 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, 1.0, 1.0 );
997 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, 1.0, 1.0 );
998 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
1001 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, - 1.0, 1.0 );
1002 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
1003 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
1004 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, - 1.0, 1.0 );
1008 glDisable( VLCGL_TARGET );
1010 p_sys->p_vout->pf_swap( p_sys->p_vout );
1012 if( p_sys->p_vout->pf_unlock )
1014 p_sys->p_vout->pf_unlock( p_sys->p_vout );
1018 int GetAlignedSize( int i_size )
1020 /* Return the nearest power of 2 */
1022 while( i_result < i_size )
1029 /*****************************************************************************
1030 * Control: control facility for the vout
1031 *****************************************************************************/
1032 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
1034 vout_sys_t *p_sys = p_vout->p_sys;
1039 return vout_vaControlDefault( p_vout, i_query, args );
1042 if( p_sys->p_vout->pf_control )
1043 return p_sys->p_vout->pf_control( p_sys->p_vout, i_query, args );
1045 return vout_vaControlDefault( p_vout, i_query, args );
1049 static int InitTextures( vout_thread_t *p_vout )
1051 vout_sys_t *p_sys = p_vout->p_sys;
1054 glDeleteTextures( 2, p_sys->p_textures );
1055 glGenTextures( 2, p_sys->p_textures );
1057 for( i_index = 0; i_index < 2; i_index++ )
1059 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_index] );
1061 /* Set the texture parameters */
1062 glTexParameterf( VLCGL_TARGET, GL_TEXTURE_PRIORITY, 1.0 );
1064 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
1065 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
1067 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
1068 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
1070 glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
1073 /* Tell the driver not to make a copy of the texture but to use
1075 glEnable( GL_UNPACK_CLIENT_STORAGE_APPLE );
1076 glPixelStorei( GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE );
1079 /* Use VRAM texturing */
1080 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1081 GL_STORAGE_CACHED_APPLE );
1083 /* Use AGP texturing */
1084 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1085 GL_STORAGE_SHARED_APPLE );
1089 /* Call glTexImage2D only once, and use glTexSubImage2D later */
1090 glTexImage2D( VLCGL_TARGET, 0, 3, p_sys->i_tex_width,
1091 p_sys->i_tex_height, 0, VLCGL_FORMAT, VLCGL_TYPE,
1092 p_sys->pp_buffer[i_index] );
1098 /*****************************************************************************
1099 * SendEvents: forward mouse and keyboard events to the parent p_vout
1100 *****************************************************************************/
1101 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
1102 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
1104 VLC_UNUSED(p_this); VLC_UNUSED(oldval);
1105 return var_Set( (vlc_object_t *)_p_vout, psz_var, newval );