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         return true;
  70 }
  71
  72 static clvideo_t* OpenVideo( clvideo_t *video, char *filename, char *name, int owner )
  73 {
  74         strncpy( video->filename, filename, MAX_QPATH );
  75         video->ownertag = owner;
  76         strncpy( video->cpif.name, CLVIDEOPREFIX, MAX_QPATH );
  77         strncat( video->cpif.name, name, MAX_QPATH - sizeof( CLVIDEOPREFIX ) );
  78
  79         if( !OpenStream( video ) )
  80                 return NULL;
  81
  82         video->state = CLVIDEO_FIRSTFRAME;
  83         video->framenum = -1;
  84         video->framerate = dpvsimpledecode_getframerate( video->stream );
  85         video->lasttime = realtime;
  86
  87         video->cpif.width = dpvsimpledecode_getwidth( video->stream );
  88         video->cpif.height = dpvsimpledecode_getheight( video->stream );
  89         video->cpif.tex = R_LoadTexture2D( cl_videotexturepool, video->cpif.name,
  90                 video->cpif.width, video->cpif.height, NULL, TEXTYPE_RGBA, 0, NULL );
  91
  92     video->imagedata = Mem_Alloc( cl_videomempool, video->cpif.width * video->cpif.height * cl_videobytesperpixel );
  93
  94         return video;
  95 }
  96
  97 clvideo_t* CL_OpenVideo( char *filename, char *name, int owner )
  98 {
  99         clvideo_t *video;
 100
 101         video = FindUnusedVid();
 102         if( !video ) {
 103                 Con_Printf( "unable to open video \"%s\" - video limit reached\n", filename );
 104                 return NULL;
 105         }
 106         return OpenVideo( video, filename, name, owner );
 107 }
 108
 109 clvideo_t* CL_GetVideo( char *name )
 110 {
 111         int i;
 112         clvideo_t *video;
 113
 114         for( i = 0 ; i < MAXCLVIDEOS ; i++ )
 115                 if( videoarray[ i ].state != CLVIDEO_UNUSED
 116                         &&      !strcmp( videoarray[ i ].cpif.name , name ) )
 117                         break;
 118         if( i == MAXCLVIDEOS )
 119                 return NULL;
 120         video = &videoarray[ i ];
 121
 122         if( video->suspended )
 123                 if( !WakeVideo( video ) )
 124                         return NULL;
 125         video->lasttime = realtime;
 126
 127         return video;
 128 }
 129
 130 void CL_StartVideo( clvideo_t * video )
 131 {
 132         if( !video )
 133                 return;
 134
 135         video->starttime = video->lasttime = realtime;
 136         video->framenum = -1;
 137         video->state = CLVIDEO_PLAY;
 138 }
 139
 140 void CL_LoopVideo( clvideo_t * video )
 141 {
 142         if( !video )
 143                 return;
 144
 145         video->starttime = video->lasttime = realtime;
 146         video->framenum = -1;
 147         video->state = CLVIDEO_LOOP;
 148 }
 149
 150 void CL_PauseVideo( clvideo_t * video )
 151 {
 152         if( !video )
 153                 return;
 154
 155         video->state = CLVIDEO_PAUSE;
 156         video->lasttime = realtime;
 157 }
 158
 159 void CL_RestartVideo( clvideo_t *video )
 160 {
 161         if( !video )
 162                 return;
 163
 164         video->starttime = video->lasttime = realtime;
 165         video->framenum = -1;
 166 }
 167
 168 void CL_StopVideo( clvideo_t * video )
 169 {
 170         if( !video )
 171                 return;
 172
 173         video->lasttime = realtime;
 174         video->framenum = -1;
 175         video->state = CLVIDEO_FIRSTFRAME;
 176 }
 177
 178 void CL_CloseVideo( clvideo_t * video )
 179 {
 180         if( !video || video->state == CLVIDEO_UNUSED )
 181                 return;
 182
 183         video->state = CLVIDEO_UNUSED;
 184
 185         if( !video->suspended || video->state != CLVIDEO_FIRSTFRAME )
 186                 dpvsimpledecode_close( video->stream );
 187         if( !video->suspended ) {
 188                 Mem_Free( video->imagedata );
 189                 R_FreeTexture( video->cpif.tex );
 190         }
 191 }
 192
 193 static void VideoFrame( clvideo_t *video )
 194 {
 195         int destframe;
 196
 197         if( video->state == CLVIDEO_FIRSTFRAME )
 198                 destframe = 0;
 199         else
 200                 destframe = (realtime - video->starttime) * video->framerate;
 201         if( destframe < 0 )
 202                 destframe = 0;
 203         if( video->framenum < destframe ) {
 204                 do {
 205                         video->framenum++;
 206                         if( dpvsimpledecode_video( video->stream, video->imagedata, cl_videormask,
 207                                 cl_videogmask, cl_videobmask, cl_videobytesperpixel,
 208                                 cl_videobytesperpixel * video->cpif.width )
 209                                 ) { // finished?
 210                                 video->framenum = -1;
 211                                 if( video->state == CLVIDEO_LOOP )
 212                                                 video->starttime = realtime;
 213                                 else if( video->state == CLVIDEO_PLAY )
 214                                                 video->state = CLVIDEO_FIRSTFRAME;
 215                                 return;
 216                         }
 217                 } while( video->framenum < destframe );
 218                 R_UpdateTexture( video->cpif.tex, video->imagedata );
 219         }
 220 }
 221
 222 void CL_VideoFrame( void ) // update all videos
 223 {
 224         int i;
 225         clvideo_t *video;
 226
 227         for( video = videoarray, i = 0 ; i < MAXCLVIDEOS ; video++, i++ )
 228                 if( video->state != CLVIDEO_UNUSED && !video->suspended )
 229                         if( realtime - video->lasttime > CLTHRESHOLD )
 230                                 SuspendVideo( video );
 231                         else if( video->state == CLVIDEO_PAUSE )
 232                                 video->starttime = realtime + video->framenum * video->framerate;
 233                         else
 234                                 VideoFrame( video );
 235
 236         if( videoarray->state == CLVIDEO_FIRSTFRAME )
 237                 CL_VideoStop();
 238 }
 239
 240 void CL_Video_Shutdown( void )
 241 {
 242         int i;
 243         for( i = 0 ; i < MAXCLVIDEOS ; i++ )
 244                 CL_CloseVideo( &videoarray[ i ] );
 245
 246         R_FreeTexturePool( &cl_videotexturepool );
 247         Mem_FreePool( &cl_videomempool );
 248 }
 249
 250 void CL_PurgeOwner( int owner )
 251 {
 252         int i;
 253         for( i = 0 ; i < MAXCLVIDEOS ; i++ )
 254                 if( videoarray[ i ].ownertag == owner )
 255                         CL_CloseVideo( &videoarray[ i ] );
 256 }
 257
 258 int cl_videoplaying = false; // old, but still supported
 259
 260 void CL_DrawVideo(void)
 261 {
 262         if (cl_videoplaying)
 263                 DrawQ_Pic(0, 0, videoarray->cpif.name, vid.conwidth, vid.conheight, 1, 1, 1, 1, 0);
 264 }
 265
 266 void CL_VideoStart(char *filename)
 267 {
 268         if( videoarray->state != CLVIDEO_UNUSED )
 269                 CL_CloseVideo( videoarray );
 270         if( !OpenVideo( videoarray, filename, filename, 0 ) )
 271                 return;
 272
 273         cl_videoplaying = true;
 274
 275         CL_StartVideo( videoarray );
 276 }
 277
 278 void CL_VideoStop(void)
 279 {
 280         cl_videoplaying = false;
 281
 282         CL_CloseVideo( videoarray );
 283 }
 284
 285 static void CL_PlayVideo_f(void)
 286 {
 287         char name[1024];
 288
 289         if (Cmd_Argc() != 2)
 290         {
 291                 Con_Print("usage: playvideo <videoname>\nplays video named video/<videoname>.dpv\n");
 292                 return;
 293         }
 294
 295         sprintf(name, "video/%s.dpv", Cmd_Argv(1));
 296         CL_VideoStart(name);
 297 }
 298
 299 static void CL_StopVideo_f(void)
 300 {
 301         CL_VideoStop();
 302 }
 303
 304 void CL_Video_Init( void )
 305 {
 306         cl_videobytesperpixel = 4;
 307         cl_videormask = BigLong(0xFF000000);
 308         cl_videogmask = BigLong(0x00FF0000);
 309         cl_videobmask = BigLong(0x0000FF00);
 310
 311         cl_videomempool = Mem_AllocPool( "CL_Video", 0, NULL );
 312         cl_videotexturepool = R_AllocTexturePool();
 313
 314         Cmd_AddCommand( "playvideo", CL_PlayVideo_f );
 315         Cmd_AddCommand( "stopvideo", CL_StopVideo_f );
 316 }