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                 if( !WakeVideo( video ) )
 126                         return NULL;
 127                 else if( video->state == CLVIDEO_RESETONWAKEUP )
 128                         video->framenum = -1;
 129
 130         video->lasttime = realtime;
 131
 132         return video;
 133 }
 134
 135 void CL_SetVideoState( clvideo_t *video, clvideostate_t state )
 136 {
 137         if( !video )
 138                 return;
 139
 140         video->lasttime = realtime;
 141         video->state = state;
 142         if( state == CLVIDEO_FIRSTFRAME )
 143                 CL_RestartVideo( video );
 144 }
 145
 146 void CL_RestartVideo( clvideo_t *video )
 147 {
 148         if( !video )
 149                 return;
 150
 151         video->starttime = video->lasttime = realtime;
 152         video->framenum = -1;
 153
 154         dpvsimpledecode_close( video->stream );
 155         if( !OpenStream( video ) )
 156                 video->state = CLVIDEO_UNUSED;
 157 }
 158
 159 void CL_CloseVideo( clvideo_t * video )
 160 {
 161         if( !video || video->state == CLVIDEO_UNUSED )
 162                 return;
 163
 164         if( !video->suspended || video->state != CLVIDEO_FIRSTFRAME )
 165                 dpvsimpledecode_close( video->stream );
 166         if( !video->suspended ) {
 167                 Mem_Free( video->imagedata );
 168                 R_FreeTexture( video->cpif.tex );
 169         }
 170
 171         video->state = CLVIDEO_UNUSED;
 172 }
 173
 174 static void VideoFrame( clvideo_t *video )
 175 {
 176         int destframe;
 177
 178         if( video->state == CLVIDEO_FIRSTFRAME )
 179                 destframe = 0;
 180         else
 181                 destframe = (realtime - video->starttime) * video->framerate;
 182         if( destframe < 0 )
 183                 destframe = 0;
 184         if( video->framenum < destframe ) {
 185                 do {
 186                         video->framenum++;
 187                         if( dpvsimpledecode_video( video->stream, video->imagedata, cl_videormask,
 188                                 cl_videogmask, cl_videobmask, cl_videobytesperpixel,
 189                                 cl_videobytesperpixel * video->cpif.width )
 190                                 ) { // finished?
 191                                 CL_RestartVideo( video );
 192                                 if( video->state == CLVIDEO_PLAY )
 193                                                 video->state = CLVIDEO_FIRSTFRAME;
 194                                 return;
 195                         }
 196                 } while( video->framenum < destframe );
 197                 R_UpdateTexture( video->cpif.tex, video->imagedata );
 198         }
 199 }
 200
 201 void CL_VideoFrame( void ) // update all videos
 202 {
 203         int i;
 204         clvideo_t *video;
 205
 206         for( video = videoarray, i = 0 ; i < MAXCLVIDEOS ; video++, i++ )
 207                 if( video->state != CLVIDEO_UNUSED && !video->suspended )
 208                         if( realtime - video->lasttime > CLTHRESHOLD )
 209                                 SuspendVideo( video );
 210                         else if( video->state == CLVIDEO_PAUSE )
 211                                 video->starttime = realtime - video->framenum * video->framerate;
 212                         else
 213                                 VideoFrame( video );
 214
 215         if( videoarray->state == CLVIDEO_FIRSTFRAME )
 216                 CL_VideoStop();
 217 }
 218
 219 void CL_Video_Shutdown( void )
 220 {
 221         int i;
 222         for( i = 0 ; i < MAXCLVIDEOS ; i++ )
 223                 CL_CloseVideo( &videoarray[ i ] );
 224
 225         R_FreeTexturePool( &cl_videotexturepool );
 226         Mem_FreePool( &cl_videomempool );
 227 }
 228
 229 void CL_PurgeOwner( int owner )
 230 {
 231         int i;
 232         for( i = 0 ; i < MAXCLVIDEOS ; i++ )
 233                 if( videoarray[ i ].ownertag == owner )
 234                         CL_CloseVideo( &videoarray[ i ] );
 235 }
 236
 237 int cl_videoplaying = false; // old, but still supported
 238
 239 void CL_DrawVideo(void)
 240 {
 241         if (cl_videoplaying)
 242                 DrawQ_Pic(0, 0, videoarray->cpif.name, vid.conwidth, vid.conheight, 1, 1, 1, 1, 0);
 243 }
 244
 245 void CL_VideoStart(char *filename)
 246 {
 247         if( videoarray->state != CLVIDEO_UNUSED )
 248                 CL_CloseVideo( videoarray );
 249         if( !OpenVideo( videoarray, filename, va( CLVIDEOPREFIX "%s", filename ), 0 ) )
 250                 return;
 251
 252         cl_videoplaying = true;
 253
 254         CL_SetVideoState( videoarray, CLVIDEO_PLAY );
 255         CL_RestartVideo( videoarray );
 256 }
 257
 258 void CL_VideoStop(void)
 259 {
 260         cl_videoplaying = false;
 261
 262         CL_CloseVideo( videoarray );
 263 }
 264
 265 static void CL_PlayVideo_f(void)
 266 {
 267         char name[1024];
 268
 269         if (Cmd_Argc() != 2)
 270         {
 271                 Con_Print("usage: playvideo <videoname>\nplays video named video/<videoname>.dpv\n");
 272                 return;
 273         }
 274
 275         sprintf(name, "video/%s.dpv", Cmd_Argv(1));
 276         CL_VideoStart(name);
 277 }
 278
 279 static void CL_StopVideo_f(void)
 280 {
 281         CL_VideoStop();
 282 }
 283
 284 void CL_Video_Init( void )
 285 {
 286         cl_videobytesperpixel = 4;
 287         cl_videormask = BigLong(0xFF000000);
 288         cl_videogmask = BigLong(0x00FF0000);
 289         cl_videobmask = BigLong(0x0000FF00);
 290
 291         cl_videomempool = Mem_AllocPool( "CL_Video", 0, NULL );
 292         cl_videotexturepool = R_AllocTexturePool();
 293
 294         Cmd_AddCommand( "playvideo", CL_PlayVideo_f );
 295         Cmd_AddCommand( "stopvideo", CL_StopVideo_f );
 296 }