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, VLC_OBJECT_OPENGL );
274 if( p_sys->p_vout == NULL )
276 msg_Err( p_vout, "out of memory" );
279 vlc_object_attach( p_sys->p_vout, p_this );
281 p_sys->p_vout->i_window_width = p_vout->i_window_width;
282 p_sys->p_vout->i_window_height = p_vout->i_window_height;
283 p_sys->p_vout->b_fullscreen = p_vout->b_fullscreen;
284 p_sys->p_vout->render.i_width = p_vout->render.i_width;
285 p_sys->p_vout->render.i_height = p_vout->render.i_height;
286 p_sys->p_vout->render.i_aspect = p_vout->render.i_aspect;
287 p_sys->p_vout->fmt_render = p_vout->fmt_render;
288 p_sys->p_vout->fmt_in = p_vout->fmt_in;
289 p_sys->p_vout->b_scale = p_vout->b_scale;
290 p_sys->p_vout->i_alignment = p_vout->i_alignment;
292 psz = config_GetPsz( p_vout, "opengl-provider" );
294 msg_Dbg( p_vout, "requesting \"%s\" opengl provider",
295 psz ? psz : "default" );
297 p_sys->p_vout->p_module =
298 module_need( p_sys->p_vout, "opengl provider", psz, 0 );
300 if( p_sys->p_vout->p_module == NULL )
302 msg_Warn( p_vout, "No OpenGL provider found" );
303 vlc_object_detach( p_sys->p_vout );
304 vlc_object_release( p_sys->p_vout );
308 p_sys->f_speed = var_CreateGetFloat( p_vout, "opengl-cube-speed" );
309 p_sys->f_radius = var_CreateGetFloat( p_vout, "opengl-cylinder-radius" );
311 p_vout->pf_init = Init;
312 p_vout->pf_end = End;
313 p_vout->pf_manage = Manage;
314 p_vout->pf_render = Render;
315 p_vout->pf_display = DisplayVideo;
316 p_vout->pf_control = Control;
318 /* Forward events from the opengl provider */
319 var_Create( p_sys->p_vout, "mouse-x", VLC_VAR_INTEGER );
320 var_Create( p_sys->p_vout, "mouse-y", VLC_VAR_INTEGER );
321 var_Create( p_sys->p_vout, "mouse-moved", VLC_VAR_BOOL );
322 var_Create( p_sys->p_vout, "mouse-clicked", VLC_VAR_INTEGER );
323 var_Create( p_sys->p_vout, "mouse-button-down", VLC_VAR_INTEGER );
324 var_Create( p_sys->p_vout, "video-on-top",
325 VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
327 var_AddCallback( p_sys->p_vout, "mouse-x", SendEvents, p_vout );
328 var_AddCallback( p_sys->p_vout, "mouse-y", SendEvents, p_vout );
329 var_AddCallback( p_sys->p_vout, "mouse-moved", SendEvents, p_vout );
330 var_AddCallback( p_sys->p_vout, "mouse-clicked", SendEvents, p_vout );
331 var_AddCallback( p_sys->p_vout, "mouse-button-down", SendEvents, p_vout );
336 /*****************************************************************************
337 * Init: initialize the OpenGL video thread output method
338 *****************************************************************************/
339 static int Init( vout_thread_t *p_vout )
341 vout_sys_t *p_sys = p_vout->p_sys;
345 p_sys->p_vout->pf_init( p_sys->p_vout );
347 /* TODO: We use YCbCr on Mac which is Y422, but on OSX it seems to == YUY2. Verify */
348 #if ( defined( WORDS_BIGENDIAN ) && VLCGL_FORMAT == GL_YCBCR_422_APPLE ) || (VLCGL_FORMAT == YCBCR_MESA)
349 p_vout->output.i_chroma = VLC_FOURCC('Y','U','Y','2');
352 #elif (VLCGL_FORMAT == GL_YCBCR_422_APPLE)
353 p_vout->output.i_chroma = VLC_FOURCC('U','Y','V','Y');
356 #elif VLCGL_FORMAT == GL_RGB
357 # if VLCGL_TYPE == GL_UNSIGNED_BYTE
358 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
359 # if defined( WORDS_BIGENDIAN )
360 p_vout->output.i_rmask = 0x00ff0000;
361 p_vout->output.i_gmask = 0x0000ff00;
362 p_vout->output.i_bmask = 0x000000ff;
364 p_vout->output.i_rmask = 0x000000ff;
365 p_vout->output.i_gmask = 0x0000ff00;
366 p_vout->output.i_bmask = 0x00ff0000;
370 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
371 # if defined( WORDS_BIGENDIAN )
372 p_vout->output.i_rmask = 0x001f;
373 p_vout->output.i_gmask = 0x07e0;
374 p_vout->output.i_bmask = 0xf800;
376 p_vout->output.i_rmask = 0xf800;
377 p_vout->output.i_gmask = 0x07e0;
378 p_vout->output.i_bmask = 0x001f;
383 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
384 # if defined( WORDS_BIGENDIAN )
385 p_vout->output.i_rmask = 0xff000000;
386 p_vout->output.i_gmask = 0x00ff0000;
387 p_vout->output.i_bmask = 0x0000ff00;
389 p_vout->output.i_rmask = 0x000000ff;
390 p_vout->output.i_gmask = 0x0000ff00;
391 p_vout->output.i_bmask = 0x00ff0000;
396 /* Since OpenGL can do rescaling for us, stick to the default
397 * coordinates and aspect. */
398 p_vout->output.i_width = p_vout->render.i_width;
399 p_vout->output.i_height = p_vout->render.i_height;
400 p_vout->output.i_aspect = p_vout->render.i_aspect;
402 p_vout->fmt_out = p_vout->fmt_in;
403 p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
405 /* We know the chroma, allocate one buffer which will be used
406 * directly by the decoder */
407 p_sys->pp_buffer[0] =
408 malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
409 if( !p_sys->pp_buffer[0] )
411 p_sys->pp_buffer[1] =
412 malloc( p_sys->i_tex_width * p_sys->i_tex_height * i_pixel_pitch );
413 if( !p_sys->pp_buffer[1] )
416 p_vout->p_picture[0].i_planes = 1;
417 p_vout->p_picture[0].p->p_pixels = p_sys->pp_buffer[0];
418 p_vout->p_picture[0].p->i_lines = p_vout->output.i_height;
419 p_vout->p_picture[0].p->i_visible_lines = p_vout->output.i_height;
420 p_vout->p_picture[0].p->i_pixel_pitch = i_pixel_pitch;
421 p_vout->p_picture[0].p->i_pitch = p_vout->output.i_width *
422 p_vout->p_picture[0].p->i_pixel_pitch;
423 p_vout->p_picture[0].p->i_visible_pitch = p_vout->output.i_width *
424 p_vout->p_picture[0].p->i_pixel_pitch;
426 p_vout->p_picture[0].i_status = DESTROYED_PICTURE;
427 p_vout->p_picture[0].i_type = DIRECT_PICTURE;
429 PP_OUTPUTPICTURE[ 0 ] = &p_vout->p_picture[0];
431 I_OUTPUTPICTURES = 1;
433 if( p_sys->p_vout->pf_lock &&
434 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
436 msg_Warn( p_vout, "could not lock OpenGL provider" );
440 InitTextures( p_vout );
443 glDisable(GL_DEPTH_TEST);
444 glDepthMask(GL_FALSE);
445 glDisable(GL_CULL_FACE);
446 glClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
447 glClear( GL_COLOR_BUFFER_BIT );
449 /* Check if the user asked for useless visual effects */
450 var_Get( p_vout, "opengl-effect", &val );
451 if( !val.psz_string || !strcmp( val.psz_string, "none" ))
453 p_sys->i_effect = OPENGL_EFFECT_NONE;
455 else if( !strcmp( val.psz_string, "cube" ) )
457 p_sys->i_effect = OPENGL_EFFECT_CUBE;
459 glEnable( GL_CULL_FACE);
461 else if( !strcmp( val.psz_string, "transparent-cube" ) )
463 p_sys->i_effect = OPENGL_EFFECT_TRANSPARENT_CUBE;
465 glDisable( GL_DEPTH_TEST );
466 glEnable( GL_BLEND );
467 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
471 #ifdef OPENGL_MORE_EFFECT
472 long i, size = sizeof(ppsz_effects)/sizeof(*ppsz_effects);
473 p_sys->i_effect = OPENGL_EFFECT_NONE;
475 for(i = 3; i < size; i++)
477 if(!strcmp( val.psz_string, ppsz_effects[i]))
479 p_sys->i_effect = 1 << i;
484 if( p_sys->i_effect == OPENGL_EFFECT_NONE )
486 msg_Warn( p_vout, "no valid opengl effect provided, using "
490 msg_Warn( p_vout, "no valid opengl effect provided, using "
492 p_sys->i_effect = OPENGL_EFFECT_NONE;
495 free( val.psz_string );
497 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
498 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
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, - 5.0 );
508 #ifdef OPENGL_MORE_EFFECT
511 /* Set the perpective */
512 glMatrixMode( GL_PROJECTION );
514 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
515 glMatrixMode( GL_MODELVIEW );
517 glTranslatef( 0.0, 0.0, -3.0 );
519 float f_pov_x, f_pov_y, f_pov_z;
520 f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
521 f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
522 f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
523 gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
526 if( p_sys->p_vout->pf_unlock )
528 p_sys->p_vout->pf_unlock( p_sys->p_vout );
534 /*****************************************************************************
535 * End: terminate GLX video thread output method
536 *****************************************************************************/
537 static void End( vout_thread_t *p_vout )
539 vout_sys_t *p_sys = p_vout->p_sys;
541 if( p_sys->p_vout->pf_lock &&
542 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
544 msg_Warn( p_vout, "could not lock OpenGL provider" );
551 /* Free the texture buffer*/
552 glDeleteTextures( 2, p_sys->p_textures );
553 free( p_sys->pp_buffer[0] );
554 free( p_sys->pp_buffer[1] );
556 if( p_sys->p_vout->pf_unlock )
558 p_sys->p_vout->pf_unlock( p_sys->p_vout );
562 /*****************************************************************************
563 * Destroy: destroy GLX video thread output method
564 *****************************************************************************
565 * Terminate an output method created by CreateVout
566 *****************************************************************************/
567 static void DestroyVout( vlc_object_t *p_this )
569 vout_thread_t *p_vout = (vout_thread_t *)p_this;
570 vout_sys_t *p_sys = p_vout->p_sys;
572 module_unneed( p_sys->p_vout, p_sys->p_vout->p_module );
573 vlc_object_release( p_sys->p_vout );
578 /*****************************************************************************
579 * Manage: handle Sys events
580 *****************************************************************************
581 * This function should be called regularly by video output thread. It returns
582 * a non null value if an error occurred.
583 *****************************************************************************/
584 static int Manage( vout_thread_t *p_vout )
586 vout_sys_t *p_sys = p_vout->p_sys;
587 int i_ret, i_fullscreen_change;
589 i_fullscreen_change = ( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE );
591 p_vout->fmt_out.i_x_offset = p_sys->p_vout->fmt_in.i_x_offset =
592 p_vout->fmt_in.i_x_offset;
593 p_vout->fmt_out.i_y_offset = p_sys->p_vout->fmt_in.i_y_offset =
594 p_vout->fmt_in.i_y_offset;
595 p_vout->fmt_out.i_visible_width = p_sys->p_vout->fmt_in.i_visible_width =
596 p_vout->fmt_in.i_visible_width;
597 p_vout->fmt_out.i_visible_height = p_sys->p_vout->fmt_in.i_visible_height =
598 p_vout->fmt_in.i_visible_height;
599 p_vout->fmt_out.i_aspect = p_sys->p_vout->fmt_in.i_aspect =
600 p_vout->fmt_in.i_aspect;
601 p_vout->fmt_out.i_sar_num = p_sys->p_vout->fmt_in.i_sar_num =
602 p_vout->fmt_in.i_sar_num;
603 p_vout->fmt_out.i_sar_den = p_sys->p_vout->fmt_in.i_sar_den =
604 p_vout->fmt_in.i_sar_den;
605 p_vout->output.i_aspect = p_vout->fmt_in.i_aspect;
607 p_sys->p_vout->i_changes = p_vout->i_changes;
608 i_ret = p_sys->p_vout->pf_manage( p_sys->p_vout );
609 p_vout->i_changes = p_sys->p_vout->i_changes;
612 if( p_sys->p_vout->pf_lock &&
613 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
615 msg_Warn( p_vout, "could not lock OpenGL provider" );
619 /* On OS X, we create the window and the GL view when entering
620 fullscreen - the textures have to be inited again */
621 if( i_fullscreen_change )
623 InitTextures( p_vout );
625 switch( p_sys->i_effect )
627 case OPENGL_EFFECT_CUBE:
628 #ifdef OPENGL_MORE_EFFECT
639 glEnable( GL_CULL_FACE );
642 case OPENGL_EFFECT_TRANSPARENT_CUBE:
643 glDisable( GL_DEPTH_TEST );
644 glEnable( GL_BLEND );
645 glBlendFunc( GL_SRC_ALPHA, GL_ONE );
649 if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
650 OPENGL_EFFECT_TRANSPARENT_CUBE ) )
652 /* Set the perpective */
653 glMatrixMode( GL_PROJECTION );
655 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
656 glMatrixMode( GL_MODELVIEW );
658 glTranslatef( 0.0, 0.0, - 5.0 );
660 #ifdef OPENGL_MORE_EFFECT
663 glMatrixMode( GL_PROJECTION );
665 glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
666 glMatrixMode( GL_MODELVIEW );
668 glTranslatef( 0.0, 0.0, -3.0 );
670 float f_pov_x, f_pov_y, f_pov_z;
671 f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
672 f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
673 f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
674 gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
679 if( p_sys->p_vout->pf_unlock )
681 p_sys->p_vout->pf_unlock( p_sys->p_vout );
684 // to align in real time in OPENGL
685 if (p_sys->p_vout->i_alignment != p_vout->i_alignment)
687 p_vout->i_changes = VOUT_CROP_CHANGE; //to force change
688 p_sys->p_vout->i_alignment = p_vout->i_alignment;
693 /*****************************************************************************
694 * Render: render previously calculated output
695 *****************************************************************************/
696 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
699 vout_sys_t *p_sys = p_vout->p_sys;
701 /* On Win32/GLX, we do this the usual way:
702 + Fill the buffer with new content,
703 + Reload the texture,
706 On OS X with VRAM or AGP texturing, the order has to be:
707 + Reload the texture,
708 + Fill the buffer with new content,
711 (Thanks to gcc from the Arstechnica forums for the tip)
713 Therefore, we have to use two buffers and textures. On Win32/GLX,
714 we reload the texture to be displayed and use it right away. On
715 OS X, we first render, then reload the texture to be used next
718 if( p_sys->p_vout->pf_lock &&
719 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
721 msg_Warn( p_vout, "could not lock OpenGL provider" );
727 i_new_index = ( p_sys->i_index + 1 ) & 1;
730 /* Update the texture */
731 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_new_index] );
732 glTexSubImage2D( VLCGL_TARGET, 0, 0, 0,
733 p_vout->fmt_out.i_width,
734 p_vout->fmt_out.i_height,
735 VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[i_new_index] );
737 /* Bind to the previous texture for drawing */
738 glBindTexture( VLCGL_TARGET, p_sys->p_textures[p_sys->i_index] );
741 p_sys->i_index = i_new_index;
742 p_pic->p->p_pixels = p_sys->pp_buffer[p_sys->i_index];
745 /* Update the texture */
746 glTexSubImage2D( GL_TEXTURE_2D, 0, 0, 0,
747 p_vout->fmt_out.i_width,
748 p_vout->fmt_out.i_height,
749 VLCGL_FORMAT, VLCGL_TYPE, p_sys->pp_buffer[0] );
752 if( p_sys->p_vout->pf_unlock )
754 p_sys->p_vout->pf_unlock( p_sys->p_vout );
759 #ifdef OPENGL_MORE_EFFECT
760 /*****************************************************************************
761 * Transform: Calculate the distorted grid coordinates
762 *****************************************************************************/
763 static void Transform( int distortion, float width, float height,int i, int j, int i_visible_width, int i_visible_height, double *ix, double *iy )
765 double x,y,xnew,ynew;
766 double r,theta,rnew,thetanew;
768 x = (double)i * (width / ((double)i_visible_width));
769 y = (double)j * (height / ((double)i_visible_height));
771 x = (2.0 * (double)x / width) - 1;
772 y = (2.0 * (double)y / height) - 1;
780 /* GRID2D TRANSFORMATION */
788 xnew = rnew * cos(thetanew);
789 ynew = rnew * sin(thetanew);
798 xnew = rnew * cos(thetanew);
799 ynew = rnew * sin(thetanew);
802 xnew = asin(x) / PID2;
803 ynew = asin(y) / PID2;
806 rnew = asin(r) / PID2;
808 xnew = rnew * cos(thetanew);
809 ynew = rnew * sin(thetanew);
811 /* OTHER WAY: 3D MODEL */
817 *ix = width * (xnew + 1) / (2.0);
818 *iy = height * (ynew + 1) / (2.0);
821 /*****************************************************************************
822 * Z_Compute: Calculate the Z-coordinate
823 *****************************************************************************/
824 static float Z_Compute(float p, int distortion, float x, float y)
827 double d_p = p / 100.0;
834 f_z = (1 - d_p * d_p) / (2 * d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x));
836 f_z = (1 - d_p * d_p) / (2 * d_p) + d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x));
840 f_z = (1 - d_p * d_p) / (d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x)) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - y * y));
842 f_z = (1 - d_p * d_p) / (d_p) + 2 * d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x)) + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - y * y));
846 f_z = (1 - d_p * d_p) / (2 * d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x - y * y));
848 f_z = (1 - d_p * d_p) / (2 * d_p) + d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x - y * y));
850 /* OTHER WAY: GRID2D TRANSFORMATION */
867 /*****************************************************************************
868 * DisplayVideo: displays previously rendered output
869 *****************************************************************************/
870 static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
873 vout_sys_t *p_sys = p_vout->p_sys;
874 float f_width, f_height, f_x, f_y;
876 if( p_sys->p_vout->pf_lock &&
877 p_sys->p_vout->pf_lock( p_sys->p_vout ) )
879 msg_Warn( p_vout, "could not lock OpenGL provider" );
883 /* glTexCoord works differently with GL_TEXTURE_2D and
884 GL_TEXTURE_RECTANGLE_EXT */
886 f_x = (float)p_vout->fmt_out.i_x_offset;
887 f_y = (float)p_vout->fmt_out.i_y_offset;
888 f_width = (float)p_vout->fmt_out.i_x_offset +
889 (float)p_vout->fmt_out.i_visible_width;
890 f_height = (float)p_vout->fmt_out.i_y_offset +
891 (float)p_vout->fmt_out.i_visible_height;
893 f_x = (float)p_vout->fmt_out.i_x_offset / p_sys->i_tex_width;
894 f_y = (float)p_vout->fmt_out.i_y_offset / p_sys->i_tex_height;
895 f_width = ( (float)p_vout->fmt_out.i_x_offset +
896 p_vout->fmt_out.i_visible_width ) / p_sys->i_tex_width;
897 f_height = ( (float)p_vout->fmt_out.i_y_offset +
898 p_vout->fmt_out.i_visible_height ) / p_sys->i_tex_height;
901 /* Why drawing here and not in Render()? Because this way, the
902 OpenGL providers can call pf_display to force redraw. Currently,
903 the OS X provider uses it to get a smooth window resizing */
905 glClear( GL_COLOR_BUFFER_BIT );
907 if( p_sys->i_effect == OPENGL_EFFECT_NONE )
909 glEnable( VLCGL_TARGET );
910 glBegin( GL_POLYGON );
911 glTexCoord2f( f_x, f_y ); glVertex2f( -1.0, 1.0 );
912 glTexCoord2f( f_width, f_y ); glVertex2f( 1.0, 1.0 );
913 glTexCoord2f( f_width, f_height ); glVertex2f( 1.0, -1.0 );
914 glTexCoord2f( f_x, f_height ); glVertex2f( -1.0, -1.0 );
918 #ifdef OPENGL_MORE_EFFECT
919 if ((p_sys->i_effect > OPENGL_EFFECT_TRANSPARENT_CUBE) ||
920 ((p_sys->i_effect == OPENGL_EFFECT_NONE)))
922 unsigned int i_i, i_j;
923 unsigned int i_accuracy = config_GetInt( p_vout, "opengl-accuracy");
924 unsigned int i_n = pow(2, i_accuracy);
925 unsigned int i_n_x = (p_vout->fmt_out.i_visible_width / (i_n * 2));
926 unsigned int i_n_y = (p_vout->fmt_out.i_visible_height / i_n);
928 int i_distortion = p_sys->i_effect;
929 float f_p = p_sys->f_radius;
931 glEnable( VLCGL_TARGET );
933 for (i_i = 0; i_i < p_vout->fmt_out.i_visible_width; i_i += i_n_x)
935 if ( i_i == i_n_x * i_n / 2) i_n_x += p_vout->fmt_out.i_visible_width % i_n;
936 if ((i_i == (p_vout->fmt_out.i_visible_width / i_n) * i_n / 2 + i_n_x) &&
937 (p_vout->fmt_out.i_visible_width / i_n != i_n_x))
938 i_n_x -= p_vout->fmt_out.i_visible_width % i_n;
943 for (i_j = 0; i_j < p_vout->fmt_out.i_visible_height; i_j += i_n_y)
945 if ( i_j == i_n_y * i_n / 2) i_n_y += p_vout->fmt_out.i_visible_height % i_n;
946 if ((i_j == (p_vout->fmt_out.i_visible_height / i_n) * i_n / 2 + i_n_y) &&
947 (p_vout->fmt_out.i_visible_height / i_n != i_n_y))
948 i_n_y -= p_vout->fmt_out.i_visible_height % i_n;
950 for (i_m = i_index_max; i_m < i_index_max + 4; i_m++)
952 int i_k = ((i_m % 4) == 1) || ((i_m % 4) == 2);
953 int i_l = ((i_m % 4) == 2) || ((i_m % 4) == 3);
955 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);
956 glTexCoord2f(f_x + d_x, f_y + d_y);
957 d_x = - 1.0 + 2.0 * ((double)(i_k * i_n_x + i_i) / (double)p_vout->fmt_out.i_visible_width);
958 d_y = 1.0 - 2.0 * (((double)i_l * i_n_y + i_j) / (double)p_vout->fmt_out.i_visible_height);
959 glVertex3f((float)d_x, (float)d_y, Z_Compute(f_p, i_distortion, (float)d_x, (float)d_y));
968 glRotatef( 0.5 * p_sys->f_speed , 0.3, 0.5, 0.7 );
970 glEnable( VLCGL_TARGET );
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 );
998 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, 1.0, - 1.0 );
999 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, 1.0, 1.0 );
1000 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, 1.0, 1.0 );
1001 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, 1.0, - 1.0 );
1004 glTexCoord2f( f_x, f_y ); glVertex3f( - 1.0, - 1.0, 1.0 );
1005 glTexCoord2f( f_x, f_height ); glVertex3f( - 1.0, - 1.0, - 1.0 );
1006 glTexCoord2f( f_width, f_height ); glVertex3f( 1.0, - 1.0, - 1.0 );
1007 glTexCoord2f( f_width, f_y ); glVertex3f( 1.0, - 1.0, 1.0 );
1011 glDisable( VLCGL_TARGET );
1013 p_sys->p_vout->pf_swap( p_sys->p_vout );
1015 if( p_sys->p_vout->pf_unlock )
1017 p_sys->p_vout->pf_unlock( p_sys->p_vout );
1021 int GetAlignedSize( int i_size )
1023 /* Return the nearest power of 2 */
1025 while( i_result < i_size )
1032 /*****************************************************************************
1033 * Control: control facility for the vout
1034 *****************************************************************************/
1035 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
1037 vout_sys_t *p_sys = p_vout->p_sys;
1042 return vout_vaControlDefault( p_vout, i_query, args );
1045 if( p_sys->p_vout->pf_control )
1046 return p_sys->p_vout->pf_control( p_sys->p_vout, i_query, args );
1048 return vout_vaControlDefault( p_vout, i_query, args );
1052 static int InitTextures( vout_thread_t *p_vout )
1054 vout_sys_t *p_sys = p_vout->p_sys;
1057 glDeleteTextures( 2, p_sys->p_textures );
1058 glGenTextures( 2, p_sys->p_textures );
1060 for( i_index = 0; i_index < 2; i_index++ )
1062 glBindTexture( VLCGL_TARGET, p_sys->p_textures[i_index] );
1064 /* Set the texture parameters */
1065 glTexParameterf( VLCGL_TARGET, GL_TEXTURE_PRIORITY, 1.0 );
1067 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
1068 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
1070 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
1071 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
1073 glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
1076 /* Tell the driver not to make a copy of the texture but to use
1078 glEnable( GL_UNPACK_CLIENT_STORAGE_APPLE );
1079 glPixelStorei( GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE );
1082 /* Use VRAM texturing */
1083 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1084 GL_STORAGE_CACHED_APPLE );
1086 /* Use AGP texturing */
1087 glTexParameteri( VLCGL_TARGET, GL_TEXTURE_STORAGE_HINT_APPLE,
1088 GL_STORAGE_SHARED_APPLE );
1092 /* Call glTexImage2D only once, and use glTexSubImage2D later */
1093 glTexImage2D( VLCGL_TARGET, 0, 3, p_sys->i_tex_width,
1094 p_sys->i_tex_height, 0, VLCGL_FORMAT, VLCGL_TYPE,
1095 p_sys->pp_buffer[i_index] );
1101 /*****************************************************************************
1102 * SendEvents: forward mouse and keyboard events to the parent p_vout
1103 *****************************************************************************/
1104 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
1105 vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
1107 VLC_UNUSED(p_this); VLC_UNUSED(oldval);
1108 return var_Set( (vlc_object_t *)_p_vout, psz_var, newval );