cl_video.c

   1
   2 #include "quakedef.h"
   3 #include "cl_video.h"
   4 #include "dpvsimpledecode.h"
   5
   6 // constants (and semi-constants)
   7 static int  cl_videormask;
   8 static int  cl_videobmask;
   9 static int  cl_videogmask;
  10 static int      cl_videobytesperpixel;
  11
  12 static int cl_activevideos;
  13 static clvideo_t videoarray[ MAXCLVIDEOS ];
  14 static rtexturepool_t *cl_videotexturepool;
  15
  16 static qboolean OpenStream( clvideo_t * video )
  17 {
  18         char *errorstring;
  19         video->stream = dpvsimpledecode_open( video->filename, &errorstring);
  20         if (!video->stream )
  21         {
  22                 Con_Printf("unable to open \"%s\", error: %s\n", video->filename, errorstring);
  23                 return false;
  24         }
  25         return true;
  26 }
  27
  28 static void SuspendVideo( clvideo_t * video )
  29 {
  30         if( video->suspended )
  31                 return;
  32         video->suspended = true;
  33         // free the texture
  34         R_FreeTexture( video->cpif.tex );
  35         // free the image data
  36         Mem_Free( video->imagedata );
  37         // if we are in firstframe mode, also close the stream
  38         if( video->state == CLVIDEO_FIRSTFRAME )
  39                 dpvsimpledecode_close( video->stream );
  40 }
  41
  42 static qboolean WakeVideo( clvideo_t * video )
  43 {
  44         if( !video->suspended )
  45                 return true;
  46         video->suspended = false;
  47
  48         if( video->state == CLVIDEO_FIRSTFRAME )
  49                 if( !OpenStream( video ) ) {
  50                         video->state = CLVIDEO_UNUSED;
  51                         return false;
  52                 }
  53
  54         video->imagedata = Mem_Alloc( cl_mempool, video->cpif.width * video->cpif.height * cl_videobytesperpixel );
  55         video->cpif.tex = R_LoadTexture2D( cl_videotexturepool, video->cpif.name,
  56                 video->cpif.width, video->cpif.height, NULL, TEXTYPE_RGBA, 0, NULL );
  57
  58         // update starttime
  59         video->starttime += realtime - video->lasttime;
  60
  61         return true;
  62 }
  63
  64 clvideo_t* CL_OpenVideo( const char *filename, const char *name, int owner, qboolean cinematic )
  65 {
  66         int i;
  67         clvideo_t *video;
  68
  69         if (cinematic)
  70         {
  71                 video = videoarray;
  72                 i = 0;
  73         }
  74         else
  75         {
  76                 for (i = 1, video = videoarray; i < cl_activevideos;i++, video++)
  77                         if (videoarray[i].state == CLVIDEO_UNUSED)
  78                                 break;
  79                 if (i == MAXCLVIDEOS)
  80                 {
  81                         Con_Printf( "unable to open video \"%s\" - video limit reached\n", filename );
  82                         return NULL;
  83                 }
  84         }
  85
  86         strncpy( video->filename, filename, MAX_QPATH );
  87         video->ownertag = owner;
  88
  89         if( strncmp( name, CLVIDEOPREFIX, sizeof( CLVIDEOPREFIX ) - 1 ) )
  90                 return NULL;
  91
  92         strncpy( video->cpif.name, name, MAX_QPATH );
  93
  94         if( !OpenStream( video ) )
  95                 return NULL;
  96
  97         video->state = CLVIDEO_FIRSTFRAME;
  98         video->framenum = -1;
  99         video->framerate = dpvsimpledecode_getframerate( video->stream );
 100         video->lasttime = realtime;
 101
 102         video->cpif.width = dpvsimpledecode_getwidth( video->stream );
 103         video->cpif.height = dpvsimpledecode_getheight( video->stream );
 104         video->cpif.tex = R_LoadTexture2D( cl_videotexturepool, video->cpif.name, video->cpif.width, video->cpif.height, NULL, TEXTYPE_RGBA, 0, NULL );
 105
 106         video->imagedata = Mem_Alloc( cl_mempool, video->cpif.width * video->cpif.height * cl_videobytesperpixel );
 107
 108         // expand the active range to include the new entry
 109         cl_activevideos = max(cl_activevideos, i + 1);
 110         return video;
 111 }
 112
 113 clvideo_t* CL_GetVideo( const char *name )
 114 {
 115         int i;
 116         clvideo_t *video;
 117
 118         for( i = 0 ; i < cl_activevideos ; i++ )
 119                 if( videoarray[ i ].state != CLVIDEO_UNUSED
 120                         &&      !strcmp( videoarray[ i ].cpif.name , name ) )
 121                         break;
 122         if( i == cl_activevideos )
 123                 return NULL;
 124         video = &videoarray[ i ];
 125
 126         if( video->suspended )
 127         {
 128                 if( !WakeVideo( video ) )
 129                         return NULL;
 130                 else if( video->state == CLVIDEO_RESETONWAKEUP )
 131                         video->framenum = -1;
 132         }
 133
 134         video->lasttime = realtime;
 135
 136         return video;
 137 }
 138
 139 void CL_SetVideoState( clvideo_t *video, clvideostate_t state )
 140 {
 141         if( !video )
 142                 return;
 143
 144         video->lasttime = realtime;
 145         video->state = state;
 146         if( state == CLVIDEO_FIRSTFRAME )
 147                 CL_RestartVideo( video );
 148 }
 149
 150 void CL_RestartVideo( clvideo_t *video )
 151 {
 152         if( !video )
 153                 return;
 154
 155         video->starttime = video->lasttime = realtime;
 156         video->framenum = -1;
 157
 158         dpvsimpledecode_close( video->stream );
 159         if( !OpenStream( video ) )
 160                 video->state = CLVIDEO_UNUSED;
 161 }
 162
 163 void CL_CloseVideo( clvideo_t * video )
 164 {
 165         if( !video || video->state == CLVIDEO_UNUSED )
 166                 return;
 167
 168         if( !video->suspended || video->state != CLVIDEO_FIRSTFRAME )
 169                 dpvsimpledecode_close( video->stream );
 170         if( !video->suspended ) {
 171                 Mem_Free( video->imagedata );
 172                 R_FreeTexture( video->cpif.tex );
 173         }
 174
 175         video->state = CLVIDEO_UNUSED;
 176 }
 177
 178 static void VideoFrame( clvideo_t *video )
 179 {
 180         int destframe;
 181
 182         if( video->state == CLVIDEO_FIRSTFRAME )
 183                 destframe = 0;
 184         else
 185                 destframe = (realtime - video->starttime) * video->framerate;
 186         if( destframe < 0 )
 187                 destframe = 0;
 188         if( video->framenum < destframe ) {
 189                 do {
 190                         video->framenum++;
 191                         if( dpvsimpledecode_video( video->stream, video->imagedata, cl_videormask,
 192                                 cl_videogmask, cl_videobmask, cl_videobytesperpixel,
 193                                 cl_videobytesperpixel * video->cpif.width )
 194                                 ) { // finished?
 195                                 CL_RestartVideo( video );
 196                                 if( video->state == CLVIDEO_PLAY )
 197                                                 video->state = CLVIDEO_FIRSTFRAME;
 198                                 return;
 199                         }
 200                 } while( video->framenum < destframe );
 201                 R_UpdateTexture( video->cpif.tex, (unsigned char *)video->imagedata );
 202         }
 203 }
 204
 205 void CL_VideoFrame( void ) // update all videos
 206 {
 207         int i;
 208         clvideo_t *video;
 209
 210         for( video = videoarray, i = 0 ; i < cl_activevideos ; video++, i++ )
 211                 if( video->state != CLVIDEO_UNUSED && !video->suspended )
 212                 {
 213                         if( realtime - video->lasttime > CLTHRESHOLD )
 214                                 SuspendVideo( video );
 215                         else if( video->state == CLVIDEO_PAUSE )
 216                                 video->starttime = realtime - video->framenum * video->framerate;
 217                         else
 218                                 VideoFrame( video );
 219                 }
 220
 221         if( videoarray->state == CLVIDEO_FIRSTFRAME )
 222                 CL_VideoStop();
 223
 224         // reduce range to exclude unnecessary entries
 225         while (cl_activevideos > 0 && videoarray[cl_activevideos-1].state == CLVIDEO_UNUSED)
 226                 cl_activevideos--;
 227 }
 228
 229 void CL_Video_Shutdown( void )
 230 {
 231         int i;
 232         for( i = 0 ; i < cl_activevideos ; i++ )
 233                 CL_CloseVideo( &videoarray[ i ] );
 234 }
 235
 236 void CL_PurgeOwner( int owner )
 237 {
 238         int i;
 239         for( i = 0 ; i < cl_activevideos ; i++ )
 240                 if( videoarray[ i ].ownertag == owner )
 241                         CL_CloseVideo( &videoarray[ i ] );
 242 }
 243
 244 int cl_videoplaying = false; // old, but still supported
 245
 246 void CL_DrawVideo(void)
 247 {
 248         if (cl_videoplaying)
 249                 DrawQ_Pic(0, 0, &videoarray->cpif, vid_conwidth.integer, vid_conheight.integer, 1, 1, 1, 1, 0);
 250 }
 251
 252 void CL_VideoStart(char *filename)
 253 {
 254         Host_StartVideo();
 255
 256         if( videoarray->state != CLVIDEO_UNUSED )
 257                 CL_CloseVideo( videoarray );
 258         if( !CL_OpenVideo( filename, va( CLVIDEOPREFIX "%s", filename ), 0, true ) )
 259                 return;
 260
 261         cl_videoplaying = true;
 262
 263         CL_SetVideoState( videoarray, CLVIDEO_PLAY );
 264         CL_RestartVideo( videoarray );
 265 }
 266
 267 void CL_VideoStop(void)
 268 {
 269         cl_videoplaying = false;
 270
 271         CL_CloseVideo( videoarray );
 272 }
 273
 274 static void CL_PlayVideo_f(void)
 275 {
 276         char name[MAX_QPATH];
 277
 278         Host_StartVideo();
 279
 280         if (Cmd_Argc() != 2)
 281         {
 282                 Con_Print("usage: playvideo <videoname>\nplays video named video/<videoname>.dpv\n");
 283                 return;
 284         }
 285
 286         sprintf(name, "video/%s.dpv", Cmd_Argv(1));
 287         CL_VideoStart(name);
 288 }
 289
 290 static void CL_StopVideo_f(void)
 291 {
 292         CL_VideoStop();
 293 }
 294
 295 static void cl_video_start( void )
 296 {
 297         int i;
 298         clvideo_t *video;
 299
 300         cl_videotexturepool = R_AllocTexturePool();
 301
 302         for( video = videoarray, i = 0 ; i < cl_activevideos ; i++, video++ )
 303                 if( video->state != CLVIDEO_UNUSED && !video->suspended )
 304                         video->cpif.tex = R_LoadTexture2D( cl_videotexturepool, video->cpif.name,
 305                                 video->cpif.width, video->cpif.height, NULL, TEXTYPE_RGBA, 0, NULL );
 306 }
 307
 308 static void cl_video_shutdown( void )
 309 {
 310         R_FreeTexturePool( &cl_videotexturepool );
 311 }
 312
 313 static void cl_video_newmap( void )
 314 {
 315 }
 316
 317 void CL_Video_Init( void )
 318 {
 319         cl_activevideos = 0;
 320         cl_videobytesperpixel = 4;
 321         cl_videormask = BigLong(0xFF000000);
 322         cl_videogmask = BigLong(0x00FF0000);
 323         cl_videobmask = BigLong(0x0000FF00);
 324
 325         Cmd_AddCommand( "playvideo", CL_PlayVideo_f, "play a .dpv video file" );
 326         Cmd_AddCommand( "stopvideo", CL_StopVideo_f, "stop playing a .dpv video file" );
 327
 328         R_RegisterModule( "CL_Video", cl_video_start, cl_video_shutdown, cl_video_newmap );
 329 }
 330