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 clvideo_t videoarray[ MAXCLVIDEOS ];
  13 static mempool_t *cl_videomempool;
  14 static rtexturepool_t *cl_videotexturepool;
  15
  16 static clvideo_t *FindUnusedVid( void )
  17 {
  18         int i;
  19         for( i = 1 ; i < MAXCLVIDEOS ; i++ )
  20                 if( videoarray[ i ].state == CLVIDEO_UNUSED )
  21                         return &videoarray[ i ];
  22         return NULL;
  23 }
  24
  25 static qboolean OpenStream( clvideo_t * video )
  26 {
  27         char *errorstring;
  28         video->stream = dpvsimpledecode_open( video->filename, &errorstring);
  29         if (!video->stream )
  30         {
  31                 Con_Printf("unable to open \"%s\", error: %s\n", video->filename, errorstring);
  32                 return false;
  33         }
  34         return true;
  35 }
  36
  37 static void SuspendVideo( clvideo_t * video )
  38 {
  39         if( video->suspended )
  40                 return;
  41         video->suspended = true;
  42         // free the texture
  43         R_FreeTexture( video->cpif.tex );
  44         // free the image data
  45         Mem_Free( video->imagedata );
  46         // if we are in firstframe mode, also close the stream
  47         if( video->state == CLVIDEO_FIRSTFRAME )
  48                 dpvsimpledecode_close( video->stream );
  49 }
  50
  51 static qboolean WakeVideo( clvideo_t * video )
  52 {
  53         if( !video->suspended )
  54                 return true;
  55         video->suspended = false;
  56
  57         if( video->state == CLVIDEO_FIRSTFRAME )
  58                 if( !OpenStream( video ) ) {
  59                         video->state = CLVIDEO_UNUSED;
  60                         return false;
  61                 }
  62
  63         video->imagedata = Mem_Alloc( cl_videomempool, video->cpif.width * video->cpif.height * cl_videobytesperpixel );
  64         video->cpif.tex = R_LoadTexture2D( cl_videotexturepool, video->cpif.name,
  65                 video->cpif.width, video->cpif.height, NULL, TEXTYPE_RGBA, 0, NULL );
  66
  67         // update starttime
  68         video->starttime += realtime - video->lasttime;
  69
  70         return true;
  71 }
  72
  73 static clvideo_t* OpenVideo( clvideo_t *video, char *filename, char *name, int owner )
  74 {
  75         strncpy( video->filename, filename, MAX_QPATH );
  76         video->ownertag = owner;
  77         if( strncmp( name, CLVIDEOPREFIX, sizeof( CLVIDEOPREFIX ) - 1 ) )
  78                 return NULL;
  79         strncpy( video->cpif.name, name, MAX_QPATH );
  80
  81         if( !OpenStream( video ) )
  82                 return NULL;
  83
  84         video->state = CLVIDEO_FIRSTFRAME;
  85         video->framenum = -1;
  86         video->framerate = dpvsimpledecode_getframerate( video->stream );
  87         video->lasttime = realtime;
  88
  89         cl_videotexturepool = R_AllocTexturePool();
  90
  91         video->cpif.width = dpvsimpledecode_getwidth( video->stream );
  92         video->cpif.height = dpvsimpledecode_getheight( video->stream );
  93         video->cpif.tex = R_LoadTexture2D( cl_videotexturepool, video->cpif.name,
  94                 video->cpif.width, video->cpif.height, NULL, TEXTYPE_RGBA, 0, NULL );
  95
  96     video->imagedata = Mem_Alloc( cl_videomempool, video->cpif.width * video->cpif.height * cl_videobytesperpixel );
  97
  98         return video;
  99 }
 100
 101 clvideo_t* CL_OpenVideo( char *filename, char *name, int owner )
 102 {
 103         clvideo_t *video;
 104
 105         video = FindUnusedVid();
 106         if( !video ) {
 107                 Con_Printf( "unable to open video \"%s\" - video limit reached\n", filename );
 108                 return NULL;
 109         }
 110         return OpenVideo( video, filename, name, owner );
 111 }
 112
 113 clvideo_t* CL_GetVideo( char *name )
 114 {
 115         int i;
 116         clvideo_t *video;
 117
 118         for( i = 0 ; i < MAXCLVIDEOS ; i++ )
 119                 if( videoarray[ i ].state != CLVIDEO_UNUSED
 120                         &&      !strcmp( videoarray[ i ].cpif.name , name ) )
 121                         break;
 122         if( i == MAXCLVIDEOS )
 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                 R_FreeTexturePool( &cl_videotexturepool );
 174         }
 175
 176         video->state = CLVIDEO_UNUSED;
 177 }
 178
 179 static void VideoFrame( clvideo_t *video )
 180 {
 181         int destframe;
 182
 183         if( video->state == CLVIDEO_FIRSTFRAME )
 184                 destframe = 0;
 185         else
 186                 destframe = (realtime - video->starttime) * video->framerate;
 187         if( destframe < 0 )
 188                 destframe = 0;
 189         if( video->framenum < destframe ) {
 190                 do {
 191                         video->framenum++;
 192                         if( dpvsimpledecode_video( video->stream, video->imagedata, cl_videormask,
 193                                 cl_videogmask, cl_videobmask, cl_videobytesperpixel,
 194                                 cl_videobytesperpixel * video->cpif.width )
 195                                 ) { // finished?
 196                                 CL_RestartVideo( video );
 197                                 if( video->state == CLVIDEO_PLAY )
 198                                                 video->state = CLVIDEO_FIRSTFRAME;
 199                                 return;
 200                         }
 201                 } while( video->framenum < destframe );
 202                 R_UpdateTexture( video->cpif.tex, video->imagedata );
 203         }
 204 }
 205
 206 void CL_VideoFrame( void ) // update all videos
 207 {
 208         int i;
 209         clvideo_t *video;
 210
 211         for( video = videoarray, i = 0 ; i < MAXCLVIDEOS ; video++, i++ )
 212                 if( video->state != CLVIDEO_UNUSED && !video->suspended )
 213                 {
 214                         if( realtime - video->lasttime > CLTHRESHOLD )
 215                                 SuspendVideo( video );
 216                         else if( video->state == CLVIDEO_PAUSE )
 217                                 video->starttime = realtime - video->framenum * video->framerate;
 218                         else
 219                                 VideoFrame( video );
 220                 }
 221
 222         if( videoarray->state == CLVIDEO_FIRSTFRAME )
 223                 CL_VideoStop();
 224 }
 225
 226 void CL_Video_Shutdown( void )
 227 {
 228         int i;
 229         for( i = 0 ; i < MAXCLVIDEOS ; i++ )
 230                 CL_CloseVideo( &videoarray[ i ] );
 231
 232         Mem_FreePool( &cl_videomempool );
 233 }
 234
 235 void CL_PurgeOwner( int owner )
 236 {
 237         int i;
 238         for( i = 0 ; i < MAXCLVIDEOS ; i++ )
 239                 if( videoarray[ i ].ownertag == owner )
 240                         CL_CloseVideo( &videoarray[ i ] );
 241 }
 242
 243 int cl_videoplaying = false; // old, but still supported
 244
 245 void CL_DrawVideo(void)
 246 {
 247         if (cl_videoplaying)
 248                 DrawQ_Pic(0, 0, videoarray->cpif.name, vid.conwidth, vid.conheight, 1, 1, 1, 1, 0);
 249 }
 250
 251 void CL_VideoStart(char *filename)
 252 {
 253         if( videoarray->state != CLVIDEO_UNUSED )
 254                 CL_CloseVideo( videoarray );
 255         if( !OpenVideo( videoarray, filename, va( CLVIDEOPREFIX "%s", filename ), 0 ) )
 256                 return;
 257
 258         cl_videoplaying = true;
 259
 260         CL_SetVideoState( videoarray, CLVIDEO_PLAY );
 261         CL_RestartVideo( videoarray );
 262 }
 263
 264 void CL_VideoStop(void)
 265 {
 266         cl_videoplaying = false;
 267
 268         CL_CloseVideo( videoarray );
 269 }
 270
 271 static void CL_PlayVideo_f(void)
 272 {
 273         char name[1024];
 274
 275         if (Cmd_Argc() != 2)
 276         {
 277                 Con_Print("usage: playvideo <videoname>\nplays video named video/<videoname>.dpv\n");
 278                 return;
 279         }
 280
 281         sprintf(name, "video/%s.dpv", Cmd_Argv(1));
 282         CL_VideoStart(name);
 283 }
 284
 285 static void CL_StopVideo_f(void)
 286 {
 287         CL_VideoStop();
 288 }
 289
 290 void CL_Video_Init( void )
 291 {
 292         cl_videobytesperpixel = 4;
 293         cl_videormask = BigLong(0xFF000000);
 294         cl_videogmask = BigLong(0x00FF0000);
 295         cl_videobmask = BigLong(0x0000FF00);
 296
 297         Cmd_AddCommand( "playvideo", CL_PlayVideo_f );
 298         Cmd_AddCommand( "stopvideo", CL_StopVideo_f );
 299
 300         cl_videomempool = Mem_AllocPool( "CL_Video", 0, NULL );
 301 }
 302