cl_video.c

   1
   2 #include "quakedef.h"
   3 #include "cl_dyntexture.h"
   4 #include "cl_video.h"
   5 #include "dpvsimpledecode.h"
   6
   7 // cvars
   8 cvar_t cl_video_subtitles = {CVAR_SAVE, "cl_video_subtitles", "0", "show subtitles for videos (if they are presented)"};
   9 cvar_t cl_video_subtitles_lines = {CVAR_SAVE, "cl_video_subtitles_lines", "4", "how many lines to occupy for subtitles"};
  10 cvar_t cl_video_subtitles_textsize = {CVAR_SAVE, "cl_video_subtitles_textsize", "16", "textsize for subtitles"};
  11 cvar_t cl_video_scale = {CVAR_SAVE, "cl_video_scale", "1", "scale of video, 1 = fullscreen, 0.75 - 3/4 of screen etc."};
  12 cvar_t cl_video_brightness = {CVAR_SAVE, "cl_video_brightness", "1", "brightness of video, 1 = fullbright, 0.75 - 3/4 etc."};
  13
  14 // constants (and semi-constants)
  15 static int  cl_videormask;
  16 static int  cl_videobmask;
  17 static int  cl_videogmask;
  18 static int      cl_videobytesperpixel;
  19
  20 static int cl_num_videos;
  21 static clvideo_t cl_videos[ MAXCLVIDEOS ];
  22 static rtexturepool_t *cl_videotexturepool;
  23
  24 static clvideo_t *FindUnusedVid( void )
  25 {
  26         int i;
  27         for( i = 1 ; i < MAXCLVIDEOS ; i++ )
  28                 if( cl_videos[ i ].state == CLVIDEO_UNUSED )
  29                         return &cl_videos[ i ];
  30         return NULL;
  31 }
  32
  33 static qboolean OpenStream( clvideo_t * video )
  34 {
  35         char *errorstring;
  36         video->stream = dpvsimpledecode_open( video->filename, &errorstring);
  37         if (!video->stream )
  38         {
  39                 Con_Printf("unable to open \"%s\", error: %s\n", video->filename, errorstring);
  40                 return false;
  41         }
  42         return true;
  43 }
  44
  45 static void VideoUpdateCallback(rtexture_t *rt, void *data) {
  46         clvideo_t *video = (clvideo_t *) data;
  47         R_UpdateTexture( video->cpif.tex, (unsigned char *)video->imagedata, 0, 0, video->cpif.width, video->cpif.height );
  48 }
  49
  50 static void LinkVideoTexture( clvideo_t *video ) {
  51         video->cpif.tex = R_LoadTexture2D( cl_videotexturepool, video->cpif.name,
  52                 video->cpif.width, video->cpif.height, NULL, TEXTYPE_BGRA, TEXF_PERSISTENT | TEXF_ALLOWUPDATES, NULL );
  53         R_MakeTextureDynamic( video->cpif.tex, VideoUpdateCallback, video );
  54         CL_LinkDynTexture( video->cpif.name, video->cpif.tex );
  55 }
  56
  57 static void UnlinkVideoTexture( clvideo_t *video ) {
  58         CL_UnlinkDynTexture( video->cpif.name );
  59         // free the texture
  60         R_FreeTexture( video->cpif.tex );
  61         // free the image data
  62         Mem_Free( video->imagedata );
  63 }
  64
  65 static void SuspendVideo( clvideo_t * video )
  66 {
  67         if( video->suspended )
  68                 return;
  69         video->suspended = true;
  70         UnlinkVideoTexture( video );
  71         // if we are in firstframe mode, also close the stream
  72         if( video->state == CLVIDEO_FIRSTFRAME )
  73                 dpvsimpledecode_close( video->stream );
  74 }
  75
  76 static qboolean WakeVideo( clvideo_t * video )
  77 {
  78         if( !video->suspended )
  79                 return true;
  80         video->suspended = false;
  81
  82         if( video->state == CLVIDEO_FIRSTFRAME )
  83                 if( !OpenStream( video ) ) {
  84                         video->state = CLVIDEO_UNUSED;
  85                         return false;
  86                 }
  87
  88         video->imagedata = Mem_Alloc( cls.permanentmempool, video->cpif.width * video->cpif.height * cl_videobytesperpixel );
  89         LinkVideoTexture( video );
  90
  91         // update starttime
  92         video->starttime += realtime - video->lasttime;
  93
  94         return true;
  95 }
  96
  97 static void LoadSubtitles( clvideo_t *video, const char *subtitlesfile )
  98 {
  99         char *subtitle_text, *data;
 100         float subtime, sublen;
 101         int numsubs = 0;
 102
 103         subtitle_text = (char *)FS_LoadFile(subtitlesfile, cls.permanentmempool, false, NULL);
 104         if (!subtitle_text)
 105         {
 106                 Con_DPrintf( "LoadSubtitles: can't open subtitle file '%s'!\n", subtitlesfile );
 107                 return;
 108         }
 109
 110         // parse subtitle_text
 111         // line is: x y "text" where
 112         //    x - start time
 113         //    y - seconds last (if 0 - last thru next sub, if negative - last to next sub - this amount of seconds)
 114
 115         data = subtitle_text;
 116         for (;;)
 117         {
 118                 if (!COM_ParseToken_QuakeC(&data, false))
 119                         break;
 120                 subtime = atof( com_token );
 121                 if (!COM_ParseToken_QuakeC(&data, false))
 122                         break;
 123                 sublen = atof( com_token );
 124                 if (!COM_ParseToken_QuakeC(&data, false))
 125                         break;
 126                 if (!com_token[0])
 127                         continue;
 128                 // check limits
 129                 if (video->subtitles == CLVIDEO_MAX_SUBTITLES)
 130                 {
 131                         Con_Printf("WARNING: CLVIDEO_MAX_SUBTITLES = %i reached when reading subtitles from '%s'\n", CLVIDEO_MAX_SUBTITLES, subtitlesfile);
 132                         break;
 133                 }
 134                 // add a sub
 135                 video->subtitle_text[numsubs] = (char *) Mem_Alloc(cls.permanentmempool, strlen(com_token) + 1);
 136                 memcpy(video->subtitle_text[numsubs], com_token, strlen(com_token) + 1);
 137                 video->subtitle_start[numsubs] = subtime;
 138                 video->subtitle_end[numsubs] = sublen;
 139                 if (numsubs > 0) // make true len for prev sub, autofix overlapping subtitles
 140                 {
 141                         if (video->subtitle_end[numsubs-1] <= 0)
 142                                 video->subtitle_end[numsubs-1] = max(video->subtitle_start[numsubs-1], video->subtitle_start[numsubs] - video->subtitle_end[numsubs-1]);
 143                         else
 144                                 video->subtitle_end[numsubs-1] = min(video->subtitle_start[numsubs-1] + video->subtitle_end[numsubs-1], video->subtitle_start[numsubs]);
 145                 }
 146                 numsubs++;
 147                 // todo: check timing for consistency?
 148         }
 149         if (numsubs > 0) // make true len for prev sub, autofix overlapping subtitles
 150         {
 151                 if (video->subtitle_end[numsubs-1] <= 0)
 152                         video->subtitle_end[numsubs-1] = 99999999; // fixme: make it end when video ends?
 153                 else
 154                         video->subtitle_end[numsubs-1] = min(video->subtitle_start[numsubs-1] + video->subtitle_end[numsubs-1], video->subtitle_start[numsubs]);
 155         }
 156         Z_Free( subtitle_text );
 157         video->subtitles = numsubs;
 158 /*
 159         Con_Printf( "video->subtitles: %i\n", video->subtitles );
 160         for (numsubs = 0; numsubs < video->subtitles; numsubs++)
 161                 Con_Printf( "  %03.2f %03.2f : %s\n", video->subtitle_start[numsubs], video->subtitle_end[numsubs], video->subtitle_text[numsubs] );
 162 */
 163 }
 164
 165 static clvideo_t* OpenVideo( clvideo_t *video, const char *filename, const char *name, int owner, const char *subtitlesfile )
 166 {
 167         strlcpy( video->filename, filename, sizeof(video->filename) );
 168         video->ownertag = owner;
 169         if( strncmp( name, CLVIDEOPREFIX, sizeof( CLVIDEOPREFIX ) - 1 ) )
 170                 return NULL;
 171         strlcpy( video->cpif.name, name, sizeof(video->cpif.name) );
 172
 173         if( !OpenStream( video ) )
 174                 return NULL;
 175
 176         video->state = CLVIDEO_FIRSTFRAME;
 177         video->framenum = -1;
 178         video->framerate = dpvsimpledecode_getframerate( video->stream );
 179         video->lasttime = realtime;
 180         video->subtitles = 0;
 181
 182         video->cpif.width = dpvsimpledecode_getwidth( video->stream );
 183         video->cpif.height = dpvsimpledecode_getheight( video->stream );
 184         video->imagedata = Mem_Alloc( cls.permanentmempool, video->cpif.width * video->cpif.height * cl_videobytesperpixel );
 185         LinkVideoTexture( video );
 186
 187         // VorteX: load simple subtitle_text file
 188         if (subtitlesfile[0])
 189                 LoadSubtitles( video, subtitlesfile );
 190
 191         return video;
 192 }
 193
 194 clvideo_t* CL_OpenVideo( const char *filename, const char *name, int owner, const char *subtitlesfile )
 195 {
 196         clvideo_t *video;
 197         // sanity check
 198         if( !name || !*name || strncmp( name, CLVIDEOPREFIX, sizeof( CLVIDEOPREFIX ) - 1 ) != 0 ) {
 199                 Con_DPrintf( "CL_OpenVideo: Bad video texture name '%s'!\n", name );
 200                 return NULL;
 201         }
 202
 203         video = FindUnusedVid();
 204         if( !video ) {
 205                 Con_Printf( "CL_OpenVideo: unable to open video \"%s\" - video limit reached\n", filename );
 206                 return NULL;
 207         }
 208         video = OpenVideo( video, filename, name, owner, subtitlesfile );
 209         // expand the active range to include the new entry
 210         if (video) {
 211                 cl_num_videos = max(cl_num_videos, (int)(video - cl_videos) + 1);
 212         }
 213         return video;
 214 }
 215
 216 static clvideo_t* CL_GetVideoBySlot( int slot )
 217 {
 218         clvideo_t *video = &cl_videos[ slot ];
 219
 220         if( video->suspended )
 221         {
 222                 if( !WakeVideo( video ) )
 223                         return NULL;
 224                 else if( video->state == CLVIDEO_RESETONWAKEUP )
 225                         video->framenum = -1;
 226         }
 227
 228         video->lasttime = realtime;
 229
 230         return video;
 231 }
 232
 233 clvideo_t *CL_GetVideoByName( const char *name )
 234 {
 235         int i;
 236
 237         for( i = 0 ; i < cl_num_videos ; i++ )
 238                 if( cl_videos[ i ].state != CLVIDEO_UNUSED
 239                         &&      !strcmp( cl_videos[ i ].cpif.name , name ) )
 240                         break;
 241         if( i != cl_num_videos )
 242                 return CL_GetVideoBySlot( i );
 243         else
 244                 return NULL;
 245 }
 246
 247 void CL_SetVideoState( clvideo_t *video, clvideostate_t state )
 248 {
 249         if( !video )
 250                 return;
 251
 252         video->lasttime = realtime;
 253         video->state = state;
 254         if( state == CLVIDEO_FIRSTFRAME )
 255                 CL_RestartVideo( video );
 256 }
 257
 258 void CL_RestartVideo( clvideo_t *video )
 259 {
 260         if( !video )
 261                 return;
 262
 263         video->starttime = video->lasttime = realtime;
 264         video->framenum = -1;
 265
 266         dpvsimpledecode_close( video->stream );
 267         if( !OpenStream( video ) )
 268                 video->state = CLVIDEO_UNUSED;
 269 }
 270
 271 void CL_CloseVideo( clvideo_t * video )
 272 {
 273         int i;
 274
 275         if( !video || video->state == CLVIDEO_UNUSED )
 276                 return;
 277
 278         if( !video->suspended || video->state != CLVIDEO_FIRSTFRAME )
 279                 dpvsimpledecode_close( video->stream );
 280         if( !video->suspended )
 281                 UnlinkVideoTexture( video );
 282         if (video->subtitles)
 283         {
 284                 for (i = 0; i < video->subtitles; i++)
 285                         Z_Free( video->subtitle_text[i] );
 286                 video->subtitles = 0;
 287         }
 288
 289         video->state = CLVIDEO_UNUSED;
 290 }
 291
 292 static void VideoFrame( clvideo_t *video )
 293 {
 294         int destframe;
 295
 296         if( video->state == CLVIDEO_FIRSTFRAME )
 297                 destframe = 0;
 298         else
 299                 destframe = (int)((realtime - video->starttime) * video->framerate);
 300         if( destframe < 0 )
 301                 destframe = 0;
 302         if( video->framenum < destframe ) {
 303                 do {
 304                         video->framenum++;
 305                         if( dpvsimpledecode_video( video->stream, video->imagedata, cl_videormask,
 306                                 cl_videogmask, cl_videobmask, cl_videobytesperpixel,
 307                                 cl_videobytesperpixel * video->cpif.width )
 308                                 ) { // finished?
 309                                 CL_RestartVideo( video );
 310                                 if( video->state == CLVIDEO_PLAY )
 311                                                 video->state = CLVIDEO_FIRSTFRAME;
 312                                 return;
 313                         }
 314                 } while( video->framenum < destframe );
 315                 R_MarkDirtyTexture( video->cpif.tex );
 316         }
 317 }
 318
 319 void CL_Video_Frame( void ) // update all videos
 320 {
 321         int i;
 322         clvideo_t *video;
 323
 324         if (!cl_num_videos)
 325                 return;
 326
 327         for( video = cl_videos, i = 0 ; i < cl_num_videos ; video++, i++ )
 328                 if( video->state != CLVIDEO_UNUSED && !video->suspended )
 329                 {
 330                         if( realtime - video->lasttime > CLTHRESHOLD )
 331                                 SuspendVideo( video );
 332                         else if( video->state == CLVIDEO_PAUSE )
 333                                 video->starttime = realtime - video->framenum * video->framerate;
 334                         else
 335                                 VideoFrame( video );
 336                 }
 337
 338         if( cl_videos->state == CLVIDEO_FIRSTFRAME )
 339                 CL_VideoStop();
 340
 341         // reduce range to exclude unnecessary entries
 342         while (cl_num_videos > 0 && cl_videos[cl_num_videos-1].state == CLVIDEO_UNUSED)
 343                 cl_num_videos--;
 344 }
 345
 346 void CL_Video_Shutdown( void )
 347 {
 348         int i;
 349         for( i = 0 ; i < cl_num_videos ; i++ )
 350                 CL_CloseVideo( &cl_videos[ i ] );
 351 }
 352
 353 void CL_PurgeOwner( int owner )
 354 {
 355         int i;
 356         for( i = 0 ; i < cl_num_videos ; i++ )
 357                 if( cl_videos[ i ].ownertag == owner )
 358                         CL_CloseVideo( &cl_videos[ i ] );
 359 }
 360
 361 typedef struct
 362 {
 363         dp_font_t *font;
 364         float x;
 365         float y;
 366         float width;
 367         float height;
 368         float alignment; // 0 = left, 0.5 = center, 1 = right
 369         float fontsize;
 370         float textalpha;
 371 }
 372 cl_video_subtitle_info_t;
 373
 374 float CL_DrawVideo_WordWidthFunc(void *passthrough, const char *w, size_t *length, float maxWidth)
 375 {
 376         cl_video_subtitle_info_t *si = (cl_video_subtitle_info_t *) passthrough;
 377
 378         if(w == NULL)
 379                 return si->fontsize * si->font->maxwidth;
 380         if(maxWidth >= 0)
 381                 return DrawQ_TextWidth_UntilWidth(w, length, si->fontsize, si->fontsize, false, si->font, -maxWidth); // -maxWidth: we want at least one char
 382         else if(maxWidth == -1)
 383                 return DrawQ_TextWidth(w, *length, si->fontsize, si->fontsize, false, si->font);
 384         else
 385                 return 0;
 386 }
 387
 388 int CL_DrawVideo_DisplaySubtitleLine(void *passthrough, const char *line, size_t length, float width, qboolean isContinuation)
 389 {
 390         cl_video_subtitle_info_t *si = (cl_video_subtitle_info_t *) passthrough;
 391
 392         int x = (int) (si->x + (si->width - width) * si->alignment);
 393         if (length > 0)
 394                 DrawQ_String(x, si->y, line, length, si->fontsize, si->fontsize, 1.0, 1.0, 1.0, si->textalpha, 0, NULL, false, si->font);
 395         si->y += si->fontsize;
 396         return 1;
 397 }
 398
 399 int cl_videoplaying = false; // old, but still supported
 400
 401 void CL_DrawVideo(void)
 402 {
 403         clvideo_t *video;
 404         float videotime;
 405         cl_video_subtitle_info_t si;
 406         int i;
 407
 408         if (!cl_videoplaying)
 409                 return;
 410
 411         video = CL_GetVideoBySlot( 0 );
 412
 413         // fix cvars
 414         if (cl_video_scale.value <= 0 || cl_video_scale.value > 1)
 415                 Cvar_SetValueQuick( &cl_video_scale, 1);
 416         if (cl_video_brightness.value <= 0 || cl_video_brightness.value > 10)
 417                 Cvar_SetValueQuick( &cl_video_brightness, 1);
 418
 419 #if 0
 420         // enable video-only polygon stipple (of global stipple is not active)
 421         if (qglPolygonStipple && !scr_stipple.integer)
 422         {
 423                 GLubyte stipple[128];
 424                 int i, s, width, parts;
 425
 426                 s = 1;
 427                 parts = (s & 007);
 428                 width = (s & 070) >> 3;
 429                 qglEnable(GL_POLYGON_STIPPLE);CHECKGLERROR // 0x0B42
 430                 for(i = 0; i < 128; ++i)
 431                 {
 432                         int line = i/4;
 433                         stipple[i] = ((line >> width) & ((1 << parts) - 1)) ? 0x00 : 0xFF;
 434                 }
 435                 qglPolygonStipple(stipple);CHECKGLERROR
 436         }
 437 #endif
 438
 439         // draw video
 440         if (cl_video_scale.value == 1)
 441                 DrawQ_Pic(0, 0, &video->cpif, vid_conwidth.integer, vid_conheight.integer, cl_video_brightness.value, cl_video_brightness.value, cl_video_brightness.value, 1, 0);
 442         else
 443         {
 444                 DrawQ_Fill(0, 0, vid_conwidth.integer, vid_conheight.integer, 0, 0, 0, 1, 0);
 445                 DrawQ_Pic((int)(vid_conwidth.integer * (1 - cl_video_scale.value) * 0.5), (int)(vid_conheight.integer * (1 - cl_video_scale.value) * 0.5), &video->cpif, (int)(vid_conwidth.integer * cl_video_scale.value), (int)(vid_conheight.integer * cl_video_scale.value), cl_video_brightness.value, cl_video_brightness.value, cl_video_brightness.value, 1, 0);
 446         }
 447
 448
 449 #if 0
 450         // disable video-only stipple
 451         if (qglPolygonStipple && !scr_stipple.integer)
 452         {
 453                 qglDisable(GL_POLYGON_STIPPLE);CHECKGLERROR
 454         }
 455 #endif
 456
 457         // VorteX: draw subtitle_text
 458         if (!video->subtitles || !cl_video_subtitles.integer)
 459                 return;
 460
 461         // find current subtitle
 462         videotime = realtime - video->starttime;
 463         for (i = 0; i < video->subtitles; i++)
 464         {
 465                 if (videotime >= video->subtitle_start[i] && videotime <= video->subtitle_end[i])
 466                 {
 467                         // found, draw it
 468                         si.font = FONT_NOTIFY;
 469                         si.x = vid_conwidth.integer * 0.1;
 470                         si.y = vid_conheight.integer - (max(1, cl_video_subtitles_lines.integer) * cl_video_subtitles_textsize.value);
 471                         si.width = vid_conwidth.integer * 0.8;
 472                         si.height = max(1, cl_video_subtitles_lines.integer) * cl_video_subtitles_textsize.value;
 473                         si.alignment = 0.5;
 474                         si.fontsize = cl_video_subtitles_textsize.value;
 475                         si.textalpha = min(1, (videotime - video->subtitle_start[i])/0.5) * min(1, ((video->subtitle_end[i] - videotime)/0.3)); // fade in and fade out
 476                         COM_Wordwrap(video->subtitle_text[i], strlen(video->subtitle_text[i]), 0, si.width, CL_DrawVideo_WordWidthFunc, &si, CL_DrawVideo_DisplaySubtitleLine, &si);
 477                         break;
 478                 }
 479         }
 480 }
 481
 482 void CL_VideoStart(char *filename, const char *subtitlesfile)
 483 {
 484         Host_StartVideo();
 485
 486         if( cl_videos->state != CLVIDEO_UNUSED )
 487                 CL_CloseVideo( cl_videos );
 488         // already contains video/
 489         if( !OpenVideo( cl_videos, filename, va( CLDYNTEXTUREPREFIX "%s", filename ), 0, subtitlesfile ) )
 490                 return;
 491         // expand the active range to include the new entry
 492         cl_num_videos = max(cl_num_videos, 1);
 493
 494         cl_videoplaying = true;
 495
 496         CL_SetVideoState( cl_videos, CLVIDEO_PLAY );
 497         CL_RestartVideo( cl_videos );
 498 }
 499
 500 void CL_Video_KeyEvent( int key, int ascii, qboolean down )
 501 {
 502         // only react to up events, to allow the user to delay the abortion point if it suddenly becomes interesting..
 503         if( !down ) {
 504                 if( key == K_ESCAPE || key == K_ENTER || key == K_SPACE ) {
 505                         CL_VideoStop();
 506                 }
 507         }
 508 }
 509
 510 void CL_VideoStop(void)
 511 {
 512         cl_videoplaying = false;
 513
 514         CL_CloseVideo( cl_videos );
 515 }
 516
 517 static void CL_PlayVideo_f(void)
 518 {
 519         char name[MAX_QPATH], subtitlesfile[MAX_QPATH];
 520
 521         Host_StartVideo();
 522
 523         if (Cmd_Argc() < 2)
 524         {
 525                 Con_Print("usage: playvideo <videoname> [custom_subtitles_file]\nplays video named video/<videoname>.dpv\nif custom subtitles file is not presented\nit tries video/<videoname>.sub");
 526                 return;
 527         }
 528
 529         dpsnprintf(name, sizeof(name), "video/%s.dpv", Cmd_Argv(1));
 530         if ( Cmd_Argc() > 2)
 531                 CL_VideoStart(name, Cmd_Argv(2));
 532         else
 533         {
 534                 dpsnprintf(subtitlesfile, sizeof(subtitlesfile), "video/%s.dpsubs", Cmd_Argv(1));
 535                 CL_VideoStart(name, subtitlesfile);
 536         }
 537 }
 538
 539 static void CL_StopVideo_f(void)
 540 {
 541         CL_VideoStop();
 542 }
 543
 544 static void cl_video_start( void )
 545 {
 546         int i;
 547         clvideo_t *video;
 548
 549         cl_videotexturepool = R_AllocTexturePool();
 550
 551         for( video = cl_videos, i = 0 ; i < cl_num_videos ; i++, video++ )
 552                 if( video->state != CLVIDEO_UNUSED && !video->suspended )
 553                         LinkVideoTexture( video );
 554 }
 555
 556 static void cl_video_shutdown( void )
 557 {
 558         // TODO: unlink video textures?
 559         R_FreeTexturePool( &cl_videotexturepool );
 560 }
 561
 562 static void cl_video_newmap( void )
 563 {
 564 }
 565
 566 void CL_Video_Init( void )
 567 {
 568         union
 569         {
 570                 unsigned char b[4];
 571                 unsigned int i;
 572         }
 573         bgra;
 574
 575         cl_num_videos = 0;
 576         cl_videobytesperpixel = 4;
 577
 578         // set masks in an endian-independent way (as they really represent bytes)
 579         bgra.i = 0;bgra.b[0] = 0xFF;cl_videobmask = bgra.i;
 580         bgra.i = 0;bgra.b[1] = 0xFF;cl_videogmask = bgra.i;
 581         bgra.i = 0;bgra.b[2] = 0xFF;cl_videormask = bgra.i;
 582
 583         Cmd_AddCommand( "playvideo", CL_PlayVideo_f, "play a .dpv video file" );
 584         Cmd_AddCommand( "stopvideo", CL_StopVideo_f, "stop playing a .dpv video file" );
 585
 586         Cvar_RegisterVariable(&cl_video_subtitles);
 587         Cvar_RegisterVariable(&cl_video_subtitles_lines);
 588         Cvar_RegisterVariable(&cl_video_subtitles_textsize);
 589         Cvar_RegisterVariable(&cl_video_scale);
 590         Cvar_RegisterVariable(&cl_video_brightness);
 591
 592         R_RegisterModule( "CL_Video", cl_video_start, cl_video_shutdown, cl_video_newmap );
 593 }
 594