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         video->cpif.width = dpvsimpledecode_getwidth( video->stream );
  90         video->cpif.height = dpvsimpledecode_getheight( video->stream );
  91         video->cpif.tex = R_LoadTexture2D( cl_videotexturepool, video->cpif.name,
  92                 video->cpif.width, video->cpif.height, NULL, TEXTYPE_RGBA, 0, NULL );
  93
  94     video->imagedata = Mem_Alloc( cl_videomempool, video->cpif.width * video->cpif.height * cl_videobytesperpixel );
  95
  96         return video;
  97 }
  98
  99 clvideo_t* CL_OpenVideo( char *filename, char *name, int owner )
 100 {
 101         clvideo_t *video;
 102
 103         video = FindUnusedVid();
 104         if( !video ) {
 105                 Con_Printf( "unable to open video \"%s\" - video limit reached\n", filename );
 106                 return NULL;
 107         }
 108         return OpenVideo( video, filename, name, owner );
 109 }
 110
 111 clvideo_t* CL_GetVideo( char *name )
 112 {
 113         int i;
 114         clvideo_t *video;
 115
 116         for( i = 0 ; i < MAXCLVIDEOS ; i++ )
 117                 if( videoarray[ i ].state != CLVIDEO_UNUSED
 118                         &&      !strcmp( videoarray[ i ].cpif.name , name ) )
 119                         break;
 120         if( i == MAXCLVIDEOS )
 121                 return NULL;
 122         video = &videoarray[ i ];
 123
 124         if( video->suspended )
 125         {
 126                 if( !WakeVideo( video ) )
 127                         return NULL;
 128                 else if( video->state == CLVIDEO_RESETONWAKEUP )
 129                         video->framenum = -1;
 130         }
 131
 132         video->lasttime = realtime;
 133
 134         return video;
 135 }
 136
 137 void CL_SetVideoState( clvideo_t *video, clvideostate_t state )
 138 {
 139         if( !video )
 140                 return;
 141
 142         video->lasttime = realtime;
 143         video->state = state;
 144         if( state == CLVIDEO_FIRSTFRAME )
 145                 CL_RestartVideo( video );
 146 }
 147
 148 void CL_RestartVideo( clvideo_t *video )
 149 {
 150         if( !video )
 151                 return;
 152
 153         video->starttime = video->lasttime = realtime;
 154         video->framenum = -1;
 155
 156         dpvsimpledecode_close( video->stream );
 157         if( !OpenStream( video ) )
 158                 video->state = CLVIDEO_UNUSED;
 159 }
 160
 161 void CL_CloseVideo( clvideo_t * video )
 162 {
 163         if( !video || video->state == CLVIDEO_UNUSED )
 164                 return;
 165
 166         if( !video->suspended || video->state != CLVIDEO_FIRSTFRAME )
 167                 dpvsimpledecode_close( video->stream );
 168         if( !video->suspended ) {
 169                 Mem_Free( video->imagedata );
 170                 R_FreeTexture( video->cpif.tex );
 171         }
 172
 173         video->state = CLVIDEO_UNUSED;
 174 }
 175
 176 static void VideoFrame( clvideo_t *video )
 177 {
 178         int destframe;
 179
 180         if( video->state == CLVIDEO_FIRSTFRAME )
 181                 destframe = 0;
 182         else
 183                 destframe = (realtime - video->starttime) * video->framerate;
 184         if( destframe < 0 )
 185                 destframe = 0;
 186         if( video->framenum < destframe ) {
 187                 do {
 188                         video->framenum++;
 189                         if( dpvsimpledecode_video( video->stream, video->imagedata, cl_videormask,
 190                                 cl_videogmask, cl_videobmask, cl_videobytesperpixel,
 191                                 cl_videobytesperpixel * video->cpif.width )
 192                                 ) { // finished?
 193                                 CL_RestartVideo( video );
 194                                 if( video->state == CLVIDEO_PLAY )
 195                                                 video->state = CLVIDEO_FIRSTFRAME;
 196                                 return;
 197                         }
 198                 } while( video->framenum < destframe );
 199                 R_UpdateTexture( video->cpif.tex, video->imagedata );
 200         }
 201 }
 202
 203 void CL_VideoFrame( void ) // update all videos
 204 {
 205         int i;
 206         clvideo_t *video;
 207
 208         for( video = videoarray, i = 0 ; i < MAXCLVIDEOS ; video++, i++ )
 209                 if( video->state != CLVIDEO_UNUSED && !video->suspended )
 210                 {
 211                         if( realtime - video->lasttime > CLTHRESHOLD )
 212                                 SuspendVideo( video );
 213                         else if( video->state == CLVIDEO_PAUSE )
 214                                 video->starttime = realtime - video->framenum * video->framerate;
 215                         else
 216                                 VideoFrame( video );
 217                 }
 218
 219         if( videoarray->state == CLVIDEO_FIRSTFRAME )
 220                 CL_VideoStop();
 221 }
 222
 223 void CL_Video_Shutdown( void )
 224 {
 225         int i;
 226         for( i = 0 ; i < MAXCLVIDEOS ; i++ )
 227                 CL_CloseVideo( &videoarray[ i ] );
 228
 229         Mem_FreePool( &cl_videomempool );
 230 }
 231
 232 void CL_PurgeOwner( int owner )
 233 {
 234         int i;
 235         for( i = 0 ; i < MAXCLVIDEOS ; i++ )
 236                 if( videoarray[ i ].ownertag == owner )
 237                         CL_CloseVideo( &videoarray[ i ] );
 238 }
 239
 240 int cl_videoplaying = false; // old, but still supported
 241
 242 void CL_DrawVideo(void)
 243 {
 244         if (cl_videoplaying)
 245                 DrawQ_Pic(0, 0, videoarray->cpif.name, vid.conwidth, vid.conheight, 1, 1, 1, 1, 0);
 246 }
 247
 248 void CL_VideoStart(char *filename)
 249 {
 250         if( videoarray->state != CLVIDEO_UNUSED )
 251                 CL_CloseVideo( videoarray );
 252         if( !OpenVideo( videoarray, filename, va( CLVIDEOPREFIX "%s", filename ), 0 ) )
 253                 return;
 254
 255         cl_videoplaying = true;
 256
 257         CL_SetVideoState( videoarray, CLVIDEO_PLAY );
 258         CL_RestartVideo( videoarray );
 259 }
 260
 261 void CL_VideoStop(void)
 262 {
 263         cl_videoplaying = false;
 264
 265         CL_CloseVideo( videoarray );
 266 }
 267
 268 static void CL_PlayVideo_f(void)
 269 {
 270         char name[1024];
 271
 272         if (Cmd_Argc() != 2)
 273         {
 274                 Con_Print("usage: playvideo <videoname>\nplays video named video/<videoname>.dpv\n");
 275                 return;
 276         }
 277
 278         sprintf(name, "video/%s.dpv", Cmd_Argv(1));
 279         CL_VideoStart(name);
 280 }
 281
 282 static void CL_StopVideo_f(void)
 283 {
 284         CL_VideoStop();
 285 }
 286
 287 static void cl_video_start( void )
 288 {
 289         int i;
 290         clvideo_t *video;
 291
 292         cl_videotexturepool = R_AllocTexturePool();
 293
 294         for( video = videoarray, i = 0 ; i < MAXCLVIDEOS ; i++, video++ )
 295                 if( video->state != CLVIDEO_UNUSED && !video->suspended )
 296                         video->cpif.tex = R_LoadTexture2D( cl_videotexturepool, video->cpif.name,
 297                                 video->cpif.width, video->cpif.height, NULL, TEXTYPE_RGBA, 0, NULL );
 298 }
 299
 300 static void cl_video_shutdown( void )
 301 {
 302         R_FreeTexturePool( &cl_videotexturepool );
 303 }
 304
 305 static void cl_video_newmap( void )
 306 {
 307 }
 308
 309 void CL_Video_Init( void )
 310 {
 311         cl_videobytesperpixel = 4;
 312         cl_videormask = BigLong(0xFF000000);
 313         cl_videogmask = BigLong(0x00FF0000);
 314         cl_videobmask = BigLong(0x0000FF00);
 315
 316         Cmd_AddCommand( "playvideo", CL_PlayVideo_f );
 317         Cmd_AddCommand( "stopvideo", CL_StopVideo_f );
 318
 319         cl_videomempool = Mem_AllocPool( "CL_Video", 0, NULL );
 320
 321         R_RegisterModule( "CL_Video", cl_video_start, cl_video_shutdown, cl_video_newmap );
 322 }
 323