cl_video.c

   1
   2 #include "quakedef.h"
   3 #include "cl_dyntexture.h"
   4 #include "cl_video.h"
   5 #include "dpvsimpledecode.h"
   6
   7 // constants (and semi-constants)
   8 static int  cl_videormask;
   9 static int  cl_videobmask;
  10 static int  cl_videogmask;
  11 static int      cl_videobytesperpixel;
  12
  13 static int cl_num_videos;
  14 static clvideo_t cl_videos[ MAXCLVIDEOS ];
  15 static rtexturepool_t *cl_videotexturepool;
  16
  17 static clvideo_t *FindUnusedVid( void )
  18 {
  19         int i;
  20         for( i = 1 ; i < MAXCLVIDEOS ; i++ )
  21                 if( cl_videos[ i ].state == CLVIDEO_UNUSED )
  22                         return &cl_videos[ i ];
  23         return NULL;
  24 }
  25
  26 static qboolean OpenStream( clvideo_t * video )
  27 {
  28         char *errorstring;
  29         video->stream = dpvsimpledecode_open( video->filename, &errorstring);
  30         if (!video->stream )
  31         {
  32                 Con_Printf("unable to open \"%s\", error: %s\n", video->filename, errorstring);
  33                 return false;
  34         }
  35         return true;
  36 }
  37
  38 static void VideoUpdateCallback(rtexture_t *rt, void *data) {
  39         clvideo_t *video = (clvideo_t *) data;
  40         R_UpdateTexture( video->cpif.tex, (unsigned char *)video->imagedata, 0, 0, video->cpif.width, video->cpif.height );
  41 }
  42
  43 static void LinkVideoTexture( clvideo_t *video ) {
  44         video->cpif.tex = R_LoadTexture2D( cl_videotexturepool, video->cpif.name,
  45                 video->cpif.width, video->cpif.height, NULL, TEXTYPE_BGRA, TEXF_PERSISTENT | TEXF_ALLOWUPDATES, NULL );
  46         R_MakeTextureDynamic( video->cpif.tex, VideoUpdateCallback, video );
  47         CL_LinkDynTexture( video->cpif.name, video->cpif.tex );
  48 }
  49
  50 static void UnlinkVideoTexture( clvideo_t *video ) {
  51         CL_UnlinkDynTexture( video->cpif.name );
  52         // free the texture
  53         R_FreeTexture( video->cpif.tex );
  54         // free the image data
  55         Mem_Free( video->imagedata );
  56 }
  57
  58 static void SuspendVideo( clvideo_t * video )
  59 {
  60         if( video->suspended )
  61                 return;
  62         video->suspended = true;
  63         UnlinkVideoTexture( video );
  64         // if we are in firstframe mode, also close the stream
  65         if( video->state == CLVIDEO_FIRSTFRAME )
  66                 dpvsimpledecode_close( video->stream );
  67 }
  68
  69 static qboolean WakeVideo( clvideo_t * video )
  70 {
  71         if( !video->suspended )
  72                 return true;
  73         video->suspended = false;
  74
  75         if( video->state == CLVIDEO_FIRSTFRAME )
  76                 if( !OpenStream( video ) ) {
  77                         video->state = CLVIDEO_UNUSED;
  78                         return false;
  79                 }
  80
  81         video->imagedata = Mem_Alloc( cls.permanentmempool, video->cpif.width * video->cpif.height * cl_videobytesperpixel );
  82         LinkVideoTexture( video );
  83
  84         // update starttime
  85         video->starttime += realtime - video->lasttime;
  86
  87         return true;
  88 }
  89
  90 static clvideo_t* OpenVideo( clvideo_t *video, const char *filename, const char *name, int owner )
  91 {
  92         strlcpy( video->filename, filename, sizeof(video->filename) );
  93         video->ownertag = owner;
  94         if( strncmp( name, CLVIDEOPREFIX, sizeof( CLVIDEOPREFIX ) - 1 ) )
  95                 return NULL;
  96         strlcpy( video->cpif.name, name, sizeof(video->cpif.name) );
  97
  98         if( !OpenStream( video ) )
  99                 return NULL;
 100
 101         video->state = CLVIDEO_FIRSTFRAME;
 102         video->framenum = -1;
 103         video->framerate = dpvsimpledecode_getframerate( video->stream );
 104         video->lasttime = realtime;
 105
 106         video->cpif.width = dpvsimpledecode_getwidth( video->stream );
 107         video->cpif.height = dpvsimpledecode_getheight( video->stream );
 108         video->imagedata = Mem_Alloc( cls.permanentmempool, video->cpif.width * video->cpif.height * cl_videobytesperpixel );
 109         LinkVideoTexture( video );
 110
 111         return video;
 112 }
 113
 114 clvideo_t* CL_OpenVideo( const char *filename, const char *name, int owner )
 115 {
 116         clvideo_t *video;
 117         // sanity check
 118         if( !name || !*name || strncmp( name, CLVIDEOPREFIX, sizeof( CLVIDEOPREFIX ) - 1 ) != 0 ) {
 119                 Con_DPrintf( "CL_OpenVideo: Bad video texture name '%s'!\n", name );
 120                 return NULL;
 121         }
 122
 123         video = FindUnusedVid();
 124         if( !video ) {
 125                 Con_Printf( "CL_OpenVideo: unable to open video \"%s\" - video limit reached\n", filename );
 126                 return NULL;
 127         }
 128         video = OpenVideo( video, filename, name, owner );
 129         // expand the active range to include the new entry
 130         if (video) {
 131                 cl_num_videos = max(cl_num_videos, (int)(video - cl_videos) + 1);
 132         }
 133         return video;
 134 }
 135
 136 static clvideo_t* CL_GetVideoBySlot( int slot )
 137 {
 138         clvideo_t *video = &cl_videos[ slot ];
 139
 140         if( video->suspended )
 141         {
 142                 if( !WakeVideo( video ) )
 143                         return NULL;
 144                 else if( video->state == CLVIDEO_RESETONWAKEUP )
 145                         video->framenum = -1;
 146         }
 147
 148         video->lasttime = realtime;
 149
 150         return video;
 151 }
 152
 153 clvideo_t *CL_GetVideoByName( const char *name )
 154 {
 155         int i;
 156
 157         for( i = 0 ; i < cl_num_videos ; i++ )
 158                 if( cl_videos[ i ].state != CLVIDEO_UNUSED
 159                         &&      !strcmp( cl_videos[ i ].cpif.name , name ) )
 160                         break;
 161         if( i != cl_num_videos )
 162                 return CL_GetVideoBySlot( i );
 163         else
 164                 return NULL;
 165 }
 166
 167 void CL_SetVideoState( clvideo_t *video, clvideostate_t state )
 168 {
 169         if( !video )
 170                 return;
 171
 172         video->lasttime = realtime;
 173         video->state = state;
 174         if( state == CLVIDEO_FIRSTFRAME )
 175                 CL_RestartVideo( video );
 176 }
 177
 178 void CL_RestartVideo( clvideo_t *video )
 179 {
 180         if( !video )
 181                 return;
 182
 183         video->starttime = video->lasttime = realtime;
 184         video->framenum = -1;
 185
 186         dpvsimpledecode_close( video->stream );
 187         if( !OpenStream( video ) )
 188                 video->state = CLVIDEO_UNUSED;
 189 }
 190
 191 void CL_CloseVideo( clvideo_t * video )
 192 {
 193         if( !video || video->state == CLVIDEO_UNUSED )
 194                 return;
 195
 196         if( !video->suspended || video->state != CLVIDEO_FIRSTFRAME )
 197                 dpvsimpledecode_close( video->stream );
 198         if( !video->suspended ) {
 199                 UnlinkVideoTexture( video );
 200         }
 201
 202         video->state = CLVIDEO_UNUSED;
 203 }
 204
 205 static void VideoFrame( clvideo_t *video )
 206 {
 207         int destframe;
 208
 209         if( video->state == CLVIDEO_FIRSTFRAME )
 210                 destframe = 0;
 211         else
 212                 destframe = (int)((realtime - video->starttime) * video->framerate);
 213         if( destframe < 0 )
 214                 destframe = 0;
 215         if( video->framenum < destframe ) {
 216                 do {
 217                         video->framenum++;
 218                         if( dpvsimpledecode_video( video->stream, video->imagedata, cl_videormask,
 219                                 cl_videogmask, cl_videobmask, cl_videobytesperpixel,
 220                                 cl_videobytesperpixel * video->cpif.width )
 221                                 ) { // finished?
 222                                 CL_RestartVideo( video );
 223                                 if( video->state == CLVIDEO_PLAY )
 224                                                 video->state = CLVIDEO_FIRSTFRAME;
 225                                 return;
 226                         }
 227                 } while( video->framenum < destframe );
 228                 R_MarkDirtyTexture( video->cpif.tex );
 229         }
 230 }
 231
 232 void CL_Video_Frame( void ) // update all videos
 233 {
 234         int i;
 235         clvideo_t *video;
 236
 237         if (!cl_num_videos)
 238                 return;
 239
 240         for( video = cl_videos, i = 0 ; i < cl_num_videos ; video++, i++ )
 241                 if( video->state != CLVIDEO_UNUSED && !video->suspended )
 242                 {
 243                         if( realtime - video->lasttime > CLTHRESHOLD )
 244                                 SuspendVideo( video );
 245                         else if( video->state == CLVIDEO_PAUSE )
 246                                 video->starttime = realtime - video->framenum * video->framerate;
 247                         else
 248                                 VideoFrame( video );
 249                 }
 250
 251         if( cl_videos->state == CLVIDEO_FIRSTFRAME )
 252                 CL_VideoStop();
 253
 254         // reduce range to exclude unnecessary entries
 255         while (cl_num_videos > 0 && cl_videos[cl_num_videos-1].state == CLVIDEO_UNUSED)
 256                 cl_num_videos--;
 257 }
 258
 259 void CL_Video_Shutdown( void )
 260 {
 261         int i;
 262         for( i = 0 ; i < cl_num_videos ; i++ )
 263                 CL_CloseVideo( &cl_videos[ i ] );
 264 }
 265
 266 void CL_PurgeOwner( int owner )
 267 {
 268         int i;
 269         for( i = 0 ; i < cl_num_videos ; i++ )
 270                 if( cl_videos[ i ].ownertag == owner )
 271                         CL_CloseVideo( &cl_videos[ i ] );
 272 }
 273
 274 int cl_videoplaying = false; // old, but still supported
 275
 276 void CL_DrawVideo(void)
 277 {
 278         if (cl_videoplaying)
 279                 DrawQ_Pic(0, 0, &CL_GetVideoBySlot( 0 )->cpif, vid_conwidth.integer, vid_conheight.integer, 1, 1, 1, 1, 0);
 280 }
 281
 282 void CL_VideoStart(char *filename)
 283 {
 284         Host_StartVideo();
 285
 286         if( cl_videos->state != CLVIDEO_UNUSED )
 287                 CL_CloseVideo( cl_videos );
 288         // already contains video/
 289         if( !OpenVideo( cl_videos, filename, va( CLDYNTEXTUREPREFIX "%s", filename ), 0 ) )
 290                 return;
 291         // expand the active range to include the new entry
 292         cl_num_videos = max(cl_num_videos, 1);
 293
 294         cl_videoplaying = true;
 295
 296         CL_SetVideoState( cl_videos, CLVIDEO_PLAY );
 297         CL_RestartVideo( cl_videos );
 298 }
 299
 300 void CL_Video_KeyEvent( int key, int ascii, qboolean down )
 301 {
 302         // only react to up events, to allow the user to delay the abortion point if it suddenly becomes interesting..
 303         if( !down ) {
 304                 if( key == K_ESCAPE || key == K_ENTER || key == K_SPACE ) {
 305                         CL_VideoStop();
 306                 }
 307         }
 308 }
 309
 310 void CL_VideoStop(void)
 311 {
 312         cl_videoplaying = false;
 313
 314         CL_CloseVideo( cl_videos );
 315 }
 316
 317 static void CL_PlayVideo_f(void)
 318 {
 319         char name[MAX_QPATH];
 320
 321         Host_StartVideo();
 322
 323         if (Cmd_Argc() != 2)
 324         {
 325                 Con_Print("usage: playvideo <videoname>\nplays video named video/<videoname>.dpv\n");
 326                 return;
 327         }
 328
 329         dpsnprintf(name, sizeof(name), "video/%s.dpv", Cmd_Argv(1));
 330         CL_VideoStart(name);
 331 }
 332
 333 static void CL_StopVideo_f(void)
 334 {
 335         CL_VideoStop();
 336 }
 337
 338 static void cl_video_start( void )
 339 {
 340         int i;
 341         clvideo_t *video;
 342
 343         cl_videotexturepool = R_AllocTexturePool();
 344
 345         for( video = cl_videos, i = 0 ; i < cl_num_videos ; i++, video++ )
 346                 if( video->state != CLVIDEO_UNUSED && !video->suspended )
 347                         LinkVideoTexture( video );
 348 }
 349
 350 static void cl_video_shutdown( void )
 351 {
 352         // TODO: unlink video textures?
 353         R_FreeTexturePool( &cl_videotexturepool );
 354 }
 355
 356 static void cl_video_newmap( void )
 357 {
 358 }
 359
 360 void CL_Video_Init( void )
 361 {
 362         union
 363         {
 364                 unsigned char b[4];
 365                 unsigned int i;
 366         }
 367         bgra;
 368
 369         cl_num_videos = 0;
 370         cl_videobytesperpixel = 4;
 371
 372         // set masks in an endian-independent way (as they really represent bytes)
 373         bgra.i = 0;bgra.b[0] = 0xFF;cl_videobmask = bgra.i;
 374         bgra.i = 0;bgra.b[1] = 0xFF;cl_videogmask = bgra.i;
 375         bgra.i = 0;bgra.b[2] = 0xFF;cl_videormask = bgra.i;
 376
 377         Cmd_AddCommand( "playvideo", CL_PlayVideo_f, "play a .dpv video file" );
 378         Cmd_AddCommand( "stopvideo", CL_StopVideo_f, "stop playing a .dpv video file" );
 379
 380         R_RegisterModule( "CL_Video", cl_video_start, cl_video_shutdown, cl_video_newmap );
 381 }
 382