Ejemplo n.º 1
0
int lwGetPolygonTags( picoMemStream_t *fp, int cksize, lwTagList *tlist,
					  lwPolygonList *plist ){
	unsigned int type;
	int rlen = 0, i, j;

	set_flen( 0 );
	type = getU4( fp );
	rlen = get_flen();
	if ( rlen < 0 ) {
		return 0;
	}

	if ( type != ID_SURF && type != ID_PART && type != ID_SMGP ) {
		_pico_memstream_seek( fp, cksize - 4, PICO_SEEK_CUR );
		return 1;
	}

	while ( rlen < cksize ) {
		i = getVX( fp ) + plist->offset;
		j = getVX( fp ) + tlist->offset;
		rlen = get_flen();
		if ( rlen < 0 || rlen > cksize ) {
			return 0;
		}

		switch ( type ) {
		case ID_SURF:  plist->pol[ i ].surf = ( lwSurface * ) ( (size_t)j );  break;
		case ID_PART:  plist->pol[ i ].part = j;  break;
		case ID_SMGP:  plist->pol[ i ].smoothgrp = j;  break;
		}
	}

	return 1;
}
Ejemplo n.º 2
0
lwSurface *lwGetSurface( picoMemStream_t *fp, int cksize ){
	lwSurface *surf;
	lwTexture *tex;
	lwPlugin *shdr;
	unsigned int id, type;
	unsigned short sz;
	int pos, rlen;


	/* allocate the Surface structure */

	surf = _pico_calloc( 1, sizeof( lwSurface ) );
	if ( !surf ) {
		goto Fail;
	}

	/* non-zero defaults */

	surf->color.rgb[ 0 ] = 0.78431f;
	surf->color.rgb[ 1 ] = 0.78431f;
	surf->color.rgb[ 2 ] = 0.78431f;
	surf->diffuse.val    = 1.0f;
	surf->glossiness.val = 0.4f;
	surf->bump.val       = 1.0f;
	surf->eta.val        = 1.0f;
	surf->sideflags      = 1;

	/* remember where we started */

	set_flen( 0 );
	pos = _pico_memstream_tell( fp );

	/* names */

	surf->name = getS0( fp );
	surf->srcname = getS0( fp );

	/* first subchunk header */

	id = getU4( fp );
	sz = getU2( fp );
	if ( 0 > get_flen() ) {
		goto Fail;
	}

	/* process subchunks as they're encountered */

	while ( 1 ) {
		sz += sz & 1;
		set_flen( 0 );

		switch ( id ) {
		case ID_COLR:
			surf->color.rgb[ 0 ] = getF4( fp );
			surf->color.rgb[ 1 ] = getF4( fp );
			surf->color.rgb[ 2 ] = getF4( fp );
			surf->color.eindex = getVX( fp );
			break;

		case ID_LUMI:
			surf->luminosity.val = getF4( fp );
			surf->luminosity.eindex = getVX( fp );
			break;

		case ID_DIFF:
			surf->diffuse.val = getF4( fp );
			surf->diffuse.eindex = getVX( fp );
			break;

		case ID_SPEC:
			surf->specularity.val = getF4( fp );
			surf->specularity.eindex = getVX( fp );
			break;

		case ID_GLOS:
			surf->glossiness.val = getF4( fp );
			surf->glossiness.eindex = getVX( fp );
			break;

		case ID_REFL:
			surf->reflection.val.val = getF4( fp );
			surf->reflection.val.eindex = getVX( fp );
			break;

		case ID_RFOP:
			surf->reflection.options = getU2( fp );
			break;

		case ID_RIMG:
			surf->reflection.cindex = getVX( fp );
			break;

		case ID_RSAN:
			surf->reflection.seam_angle = getF4( fp );
			break;

		case ID_TRAN:
			surf->transparency.val.val = getF4( fp );
			surf->transparency.val.eindex = getVX( fp );
			break;

		case ID_TROP:
			surf->transparency.options = getU2( fp );
			break;

		case ID_TIMG:
			surf->transparency.cindex = getVX( fp );
			break;

		case ID_RIND:
			surf->eta.val = getF4( fp );
			surf->eta.eindex = getVX( fp );
			break;

		case ID_TRNL:
			surf->translucency.val = getF4( fp );
			surf->translucency.eindex = getVX( fp );
			break;

		case ID_BUMP:
			surf->bump.val = getF4( fp );
			surf->bump.eindex = getVX( fp );
			break;

		case ID_SMAN:
			surf->smooth = getF4( fp );
			break;

		case ID_SIDE:
			surf->sideflags = getU2( fp );
			break;

		case ID_CLRH:
			surf->color_hilite.val = getF4( fp );
			surf->color_hilite.eindex = getVX( fp );
			break;

		case ID_CLRF:
			surf->color_filter.val = getF4( fp );
			surf->color_filter.eindex = getVX( fp );
			break;

		case ID_ADTR:
			surf->add_trans.val = getF4( fp );
			surf->add_trans.eindex = getVX( fp );
			break;

		case ID_SHRP:
			surf->dif_sharp.val = getF4( fp );
			surf->dif_sharp.eindex = getVX( fp );
			break;

		case ID_GVAL:
			surf->glow.val = getF4( fp );
			surf->glow.eindex = getVX( fp );
			break;

		case ID_LINE:
			surf->line.enabled = 1;
			if ( sz >= 2 ) {
				surf->line.flags = getU2( fp );
			}
			if ( sz >= 6 ) {
				surf->line.size.val = getF4( fp );
			}
			if ( sz >= 8 ) {
				surf->line.size.eindex = getVX( fp );
			}
			break;

		case ID_ALPH:
			surf->alpha_mode = getU2( fp );
			surf->alpha = getF4( fp );
			break;

		case ID_AVAL:
			surf->alpha = getF4( fp );
			break;

		case ID_BLOK:
			type = getU4( fp );

			switch ( type ) {
			case ID_IMAP:
			case ID_PROC:
			case ID_GRAD:
				tex = lwGetTexture( fp, sz - 4, type );
				if ( !tex ) {
					goto Fail;
				}
				if ( !add_texture( surf, tex ) ) {
					lwFreeTexture( tex );
				}
				set_flen( 4 + get_flen() );
				break;
			case ID_SHDR:
				shdr = lwGetShader( fp, sz - 4 );
				if ( !shdr ) {
					goto Fail;
				}
				lwListInsert( (void **) &surf->shader, shdr, (void *) compare_shaders );
				++surf->nshaders;
				set_flen( 4 + get_flen() );
				break;
			}
			break;

		default:
			break;
		}

		/* error while reading current subchunk? */

		rlen = get_flen();
		if ( rlen < 0 || rlen > sz ) {
			goto Fail;
		}

		/* skip unread parts of the current subchunk */

		if ( rlen < sz ) {
			_pico_memstream_seek( fp, sz - rlen, PICO_SEEK_CUR );
		}

		/* end of the SURF chunk? */

		if ( cksize <= _pico_memstream_tell( fp ) - pos ) {
			break;
		}

		/* get the next subchunk header */

		set_flen( 0 );
		id = getU4( fp );
		sz = getU2( fp );
		if ( 6 != get_flen() ) {
			goto Fail;
		}
	}

	return surf;

Fail:
	if ( surf ) {
		lwFreeSurface( surf );
	}
	return NULL;
}
Ejemplo n.º 3
0
int lwGetImageMap( picoMemStream_t *fp, int rsz, lwTexture *tex ){
	unsigned int id;
	unsigned short sz;
	int rlen, pos;

	pos = _pico_memstream_tell( fp );
	id = getU4( fp );
	sz = getU2( fp );
	if ( 0 > get_flen() ) {
		return 0;
	}

	while ( 1 ) {
		sz += sz & 1;
		set_flen( 0 );

		switch ( id ) {
		case ID_TMAP:
			if ( !lwGetTMap( fp, sz, &tex->tmap ) ) {
				return 0;
			}
			break;

		case ID_PROJ:
			tex->param.imap.projection = getU2( fp );
			break;

		case ID_VMAP:
			tex->param.imap.vmap_name = getS0( fp );
			break;

		case ID_AXIS:
			tex->param.imap.axis = getU2( fp );
			break;

		case ID_IMAG:
			tex->param.imap.cindex = getVX( fp );
			break;

		case ID_WRAP:
			tex->param.imap.wrapw_type = getU2( fp );
			tex->param.imap.wraph_type = getU2( fp );
			break;

		case ID_WRPW:
			tex->param.imap.wrapw.val = getF4( fp );
			tex->param.imap.wrapw.eindex = getVX( fp );
			break;

		case ID_WRPH:
			tex->param.imap.wraph.val = getF4( fp );
			tex->param.imap.wraph.eindex = getVX( fp );
			break;

		case ID_AAST:
			tex->param.imap.aas_flags = getU2( fp );
			tex->param.imap.aa_strength = getF4( fp );
			break;

		case ID_PIXB:
			tex->param.imap.pblend = getU2( fp );
			break;

		case ID_STCK:
			tex->param.imap.stck.val = getF4( fp );
			tex->param.imap.stck.eindex = getVX( fp );
			break;

		case ID_TAMP:
			tex->param.imap.amplitude.val = getF4( fp );
			tex->param.imap.amplitude.eindex = getVX( fp );
			break;

		default:
			break;
		}

		/* error while reading the current subchunk? */

		rlen = get_flen();
		if ( rlen < 0 || rlen > sz ) {
			return 0;
		}

		/* skip unread parts of the current subchunk */

		if ( rlen < sz ) {
			_pico_memstream_seek( fp, sz - rlen, PICO_SEEK_CUR );
		}

		/* end of the image map? */

		if ( rsz <= _pico_memstream_tell( fp ) - pos ) {
			break;
		}

		/* get the next subchunk header */

		set_flen( 0 );
		id = getU4( fp );
		sz = getU2( fp );
		if ( 6 != get_flen() ) {
			return 0;
		}
	}

	set_flen( _pico_memstream_tell( fp ) - pos );
	return 1;
}
Ejemplo n.º 4
0
int lwGetTMap( picoMemStream_t *fp, int tmapsz, lwTMap *tmap ){
	unsigned int id;
	unsigned short sz;
	int rlen, pos, i;

	pos = _pico_memstream_tell( fp );
	id = getU4( fp );
	sz = getU2( fp );
	if ( 0 > get_flen() ) {
		return 0;
	}

	while ( 1 ) {
		sz += sz & 1;
		set_flen( 0 );

		switch ( id ) {
		case ID_SIZE:
			for ( i = 0; i < 3; i++ )
				tmap->size.val[ i ] = getF4( fp );
			tmap->size.eindex = getVX( fp );
			break;

		case ID_CNTR:
			for ( i = 0; i < 3; i++ )
				tmap->center.val[ i ] = getF4( fp );
			tmap->center.eindex = getVX( fp );
			break;

		case ID_ROTA:
			for ( i = 0; i < 3; i++ )
				tmap->rotate.val[ i ] = getF4( fp );
			tmap->rotate.eindex = getVX( fp );
			break;

		case ID_FALL:
			tmap->fall_type = getU2( fp );
			for ( i = 0; i < 3; i++ )
				tmap->falloff.val[ i ] = getF4( fp );
			tmap->falloff.eindex = getVX( fp );
			break;

		case ID_OREF:
			tmap->ref_object = getS0( fp );
			break;

		case ID_CSYS:
			tmap->coord_sys = getU2( fp );
			break;

		default:
			break;
		}

		/* error while reading the current subchunk? */

		rlen = get_flen();
		if ( rlen < 0 || rlen > sz ) {
			return 0;
		}

		/* skip unread parts of the current subchunk */

		if ( rlen < sz ) {
			_pico_memstream_seek( fp, sz - rlen, PICO_SEEK_CUR );
		}

		/* end of the TMAP subchunk? */

		if ( tmapsz <= _pico_memstream_tell( fp ) - pos ) {
			break;
		}

		/* get the next subchunk header */

		set_flen( 0 );
		id = getU4( fp );
		sz = getU2( fp );
		if ( 6 != get_flen() ) {
			return 0;
		}
	}

	set_flen( _pico_memstream_tell( fp ) - pos );
	return 1;
}
Ejemplo n.º 5
0
int lwGetTHeader( picoMemStream_t *fp, int hsz, lwTexture *tex ){
	unsigned int id;
	unsigned short sz;
	int pos, rlen;


	/* remember where we started */

	set_flen( 0 );
	pos = _pico_memstream_tell( fp );

	/* ordinal string */

	tex->ord = getS0( fp );

	/* first subchunk header */

	id = getU4( fp );
	sz = getU2( fp );
	if ( 0 > get_flen() ) {
		return 0;
	}

	/* process subchunks as they're encountered */

	while ( 1 ) {
		sz += sz & 1;
		set_flen( 0 );

		switch ( id ) {
		case ID_CHAN:
			tex->chan = getU4( fp );
			break;

		case ID_OPAC:
			tex->opac_type = getU2( fp );
			tex->opacity.val = getF4( fp );
			tex->opacity.eindex = getVX( fp );
			break;

		case ID_ENAB:
			tex->enabled = getU2( fp );
			break;

		case ID_NEGA:
			tex->negative = getU2( fp );
			break;

		case ID_AXIS:
			tex->axis = getU2( fp );
			break;

		default:
			break;
		}

		/* error while reading current subchunk? */

		rlen = get_flen();
		if ( rlen < 0 || rlen > sz ) {
			return 0;
		}

		/* skip unread parts of the current subchunk */

		if ( rlen < sz ) {
			_pico_memstream_seek( fp, sz - rlen, PICO_SEEK_CUR );
		}

		/* end of the texture header subchunk? */

		if ( hsz <= _pico_memstream_tell( fp ) - pos ) {
			break;
		}

		/* get the next subchunk header */

		set_flen( 0 );
		id = getU4( fp );
		sz = getU2( fp );
		if ( 6 != get_flen() ) {
			return 0;
		}
	}

	set_flen( _pico_memstream_tell( fp ) - pos );
	return 1;
}
Ejemplo n.º 6
0
lwEnvelope *lwGetEnvelope( FILE *fp, int cksize )
{
   lwEnvelope *env;
   lwKey *key;
   lwPlugin *plug;
   unsigned int id;
   unsigned short sz;
   float f[ 4 ];
   int i, nparams, pos, rlen;


   /* allocate the Envelope structure */

   env = calloc( 1, sizeof( lwEnvelope ));
   if ( !env ) goto Fail;

   /* remember where we started */

   set_flen( 0 );
   pos = ftell( fp );

   /* index */

   env->index = getVX( fp );

   /* first subchunk header */

   id = getU4( fp );
   sz = getU2( fp );
   if ( 0 > get_flen() ) goto Fail;

   /* process subchunks as they're encountered */

   while ( 1 ) {
      sz += sz & 1;
      set_flen( 0 );

      switch ( id ) {
         case ID_TYPE:
            env->type = getU2( fp );
            break;

         case ID_NAME:
            env->name = getS0( fp );
            break;

         case ID_PRE:
            env->behavior[ 0 ] = getU2( fp );
            break;

         case ID_POST:
            env->behavior[ 1 ] = getU2( fp );
            break;

         case ID_KEY:
            key = calloc( 1, sizeof( lwKey ));
            if ( !key ) goto Fail;
            key->time = getF4( fp );
            key->value = getF4( fp );
            lwListInsert( &env->key, key, compare_keys );
            env->nkeys++;
            break;

         case ID_SPAN:
            if ( !key ) goto Fail;
            key->shape = getU4( fp );

            nparams = ( sz - 4 ) / 4;
            if ( nparams > 4 ) nparams = 4;
            for ( i = 0; i < nparams; i++ )
               f[ i ] = getF4( fp );

            switch ( key->shape ) {
               case ID_TCB:
                  key->tension = f[ 0 ];
                  key->continuity = f[ 1 ];
                  key->bias = f[ 2 ];
                  break;

               case ID_BEZI:
               case ID_HERM:
               case ID_BEZ2:
                  for ( i = 0; i < nparams; i++ )
                     key->param[ i ] = f[ i ];
                  break;
            }
            break;

         case ID_CHAN:
            plug = calloc( 1, sizeof( lwPlugin ));
            if ( !plug ) goto Fail;

            plug->name = getS0( fp );
            plug->flags = getU2( fp );
            plug->data = getbytes( fp, sz - get_flen() );

            lwListAdd( &env->cfilter, plug );
            env->ncfilters++;
            break;

         default:
            break;
      }

      /* error while reading current subchunk? */

      rlen = get_flen();
      if ( rlen < 0 || rlen > sz ) goto Fail;

      /* skip unread parts of the current subchunk */

      if ( rlen < sz )
         fseek( fp, sz - rlen, SEEK_CUR );

      /* end of the ENVL chunk? */

      rlen = ftell( fp ) - pos;
      if ( cksize < rlen ) goto Fail;
      if ( cksize == rlen ) break;

      /* get the next subchunk header */

      set_flen( 0 );
      id = getU4( fp );
      sz = getU2( fp );
      if ( 6 != get_flen() ) goto Fail;
   }

   return env;

Fail:
   lwFreeEnvelope( env );
   return NULL;
}
Ejemplo n.º 7
0
lwClip *lwGetClip( FILE *fp, int cksize )
{
   lwClip *clip;
   lwPlugin *filt;
   unsigned int id;
   unsigned short sz;
   int pos, rlen;


   /* allocate the Clip structure */

   clip = calloc( 1, sizeof( lwClip ));
   if ( !clip ) goto Fail;

   clip->contrast.val = 1.0f;
   clip->brightness.val = 1.0f;
   clip->saturation.val = 1.0f;
   clip->gamma.val = 1.0f;

   /* remember where we started */

   set_flen( 0 );
   pos = ftell( fp );

   /* index */

   clip->index = getI4( fp );

   /* first subchunk header */

   clip->type = getU4( fp );
   sz = getU2( fp );
   if ( 0 > get_flen() ) goto Fail;

   sz += sz & 1;
   set_flen( 0 );

   switch ( clip->type ) {
      case ID_STIL:
         clip->source.still.name = getS0( fp );
         break;

      case ID_ISEQ:
         clip->source.seq.digits  = getU1( fp );
         clip->source.seq.flags   = getU1( fp );
         clip->source.seq.offset  = getI2( fp );
         getU2( fp );  /* Legacy Cruft: Nothing to see here */
         clip->source.seq.start   = getI2( fp );
         clip->source.seq.end     = getI2( fp );
         clip->source.seq.prefix  = getS0( fp );
         clip->source.seq.suffix  = getS0( fp );
         break;

      case ID_ANIM:
         clip->source.anim.name   = getS0( fp );
         clip->source.anim.server = getS0( fp );
         rlen = get_flen();
         clip->source.anim.data   = getbytes( fp, sz - rlen );
         break;

      case ID_XREF:
         clip->source.xref.index  = getI4( fp );
         clip->source.xref.string = getS0( fp );
         break;

      case ID_STCC:
         clip->source.cycle.lo   = getI2( fp );
         clip->source.cycle.hi   = getI2( fp );
         clip->source.cycle.name = getS0( fp );
         break;

      default:
         break;
   }

   /* error while reading current subchunk? */

   rlen = get_flen();
   if ( rlen < 0 || rlen > sz ) goto Fail;

   /* skip unread parts of the current subchunk */

   if ( rlen < sz )
      fseek( fp, sz - rlen, SEEK_CUR );

   /* end of the CLIP chunk? */

   rlen = ftell( fp ) - pos;
   if ( cksize < rlen ) goto Fail;
   if ( cksize == rlen )
      return clip;

   /* process subchunks as they're encountered */

   id = getU4( fp );
   sz = getU2( fp );
   if ( 0 > get_flen() ) goto Fail;

   while ( 1 ) {
      sz += sz & 1;
      set_flen( 0 );

      switch ( id ) {
         case ID_TIME:
            clip->start_time = getF4( fp );
            clip->duration = getF4( fp );
            clip->frame_rate = getF4( fp );
            break;

         case ID_CONT:
            clip->contrast.val = getF4( fp );
            clip->contrast.eindex = getVX( fp );
            break;

         case ID_BRIT:
            clip->brightness.val = getF4( fp );
            clip->brightness.eindex = getVX( fp );
            break;

         case ID_SATR:
            clip->saturation.val = getF4( fp );
            clip->saturation.eindex = getVX( fp );
            break;

         case ID_HUE:
            clip->hue.val = getF4( fp );
            clip->hue.eindex = getVX( fp );
            break;

         case ID_GAMM:
            clip->gamma.val = getF4( fp );
            clip->gamma.eindex = getVX( fp );
            break;

         case ID_NEGA:
            clip->negative = getU2( fp );
            break;

         case ID_IFLT:
         case ID_PFLT:
            filt = calloc( 1, sizeof( lwPlugin ));
            if ( !filt ) goto Fail;

            filt->name = getS0( fp );
            filt->flags = getU2( fp );
            rlen = get_flen();
            filt->data = getbytes( fp, sz - rlen );

            if ( id == ID_IFLT ) {
               lwListAdd( &clip->ifilter, filt );
               clip->nifilters++;
            }
            else {
               lwListAdd( &clip->pfilter, filt );
               clip->npfilters++;
            }
            break;

         default:
            break;
      }

      /* error while reading current subchunk? */

      rlen = get_flen();
      if ( rlen < 0 || rlen > sz ) goto Fail;

      /* skip unread parts of the current subchunk */

      if ( rlen < sz )
         fseek( fp, sz - rlen, SEEK_CUR );

      /* end of the CLIP chunk? */

      rlen = ftell( fp ) - pos;
      if ( cksize < rlen ) goto Fail;
      if ( cksize == rlen ) break;

      /* get the next chunk header */

      set_flen( 0 );
      id = getU4( fp );
      sz = getU2( fp );
      if ( 6 != get_flen() ) goto Fail;
   }

   return clip;

Fail:
   lwFreeClip( clip );
   return NULL;
}