Flex *flexReadBegin( char *filename, unsigned int *failID, int *failpos ) { FILE *fp = NULL; Flex *flex; Frame *frame = NULL; Layer *layer = NULL; unsigned int id, formsize, type, cksize; int rlen, nframes = 0, nlayers = 0; /* open the file */ fp = fopen( filename, "rb" ); if ( !fp ) return NULL; /* read the first 12 bytes */ set_flen( 0 ); id = getU4( fp ); formsize = getU4( fp ); type = getU4( fp ); if ( 12 != get_flen() ) { fclose( fp ); return NULL; } /* is this a flex image? */ if ( id != ID_FORM ) { fclose( fp ); if ( failpos ) *failpos = 12; return NULL; } if ( type != ID_FPBM ) { fclose( fp ); if ( failpos ) *failpos = 12; return NULL; } /* allocate a Flex */ flex = calloc( 1, sizeof( Flex )); if ( !flex ) goto Fail; /* get the first chunk header */ id = getU4( fp ); cksize = getU4( fp ); if ( 0 > get_flen() ) goto Fail; /* process chunks as they're encountered */ while ( 1 ) { set_flen( 0 ); switch ( id ) { case ID_FPHD: if(cksize==28) // Older file version { flex->hdr.width = getI2( fp ); flex->hdr.height = getI2( fp ); } else // cksize==32 { flex->hdr.width = getI4( fp ); flex->hdr.height = getI4( fp ); } flex->hdr.numLayers = getI2( fp ); flex->hdr.numFrames = getI2( fp ); flex->hdr.numBuffers = getI2( fp ); flex->hdr.flags = getI2( fp ); flex->hdr.srcLayerDepth = getI2( fp ); skipbytes( fp, 2 ); flex->hdr.pixelAspect = getF4( fp ); flex->hdr.pixelWidth = getF4( fp ); flex->hdr.framesPerSecond = getF4( fp ); frame = calloc( flex->hdr.numFrames, sizeof( Frame )); if ( !frame ) goto Fail; flex->frame = frame; break; case ID_FLEX: if ( !frame ) goto Fail; if ( nframes >= flex->hdr.numFrames ) goto Fail; nlayers = getI2( fp ); layer = calloc( nlayers, sizeof( Layer )); if ( !layer ) goto Fail; frame[ nframes ].layer = layer; frame[ nframes ].hdr.numLayers = nlayers; nlayers = 0; ++nframes; break; case ID_LYHD: if ( !layer ) goto Fail; if ( nlayers >= frame[ nframes - 1 ].hdr.numLayers ) goto Fail; layer[ nlayers ].w = flex->hdr.width; layer[ nlayers ].h = flex->hdr.height; layer[ nlayers ].hdr.flags = getI2( fp ); layer[ nlayers ].hdr.layerType = getI2( fp ); layer[ nlayers ].hdr.layerDepth = getI2( fp ); layer[ nlayers ].hdr.compression = getI2( fp ); layer[ nlayers ].hdr.blackPoint = getF4( fp ); layer[ nlayers ].hdr.whitePoint = getF4( fp ); layer[ nlayers ].hdr.gamma = getF4( fp ); break; case ID_LAYR: if ( !layer ) goto Fail; layer[ nlayers ].offset = ftell( fp ); layer[ nlayers ].size = cksize; ++nlayers; break; default: break; } /* error while reading current subchunk? */ rlen = get_flen(); if ( rlen < 0 || rlen > cksize ) goto Fail; /* skip unread parts of the current subchunk */ cksize += cksize & 1; if ( rlen < cksize ) fseek( fp, cksize - rlen, SEEK_CUR ); /* end of the file? */ if ( formsize <= ftell( fp ) - 8 ) break; /* get the next chunk header */ set_flen( 0 ); id = getU4( fp ); cksize = getU4( fp ); if ( 8 != get_flen() ) goto Fail; } flex->fp = fp; return flex; Fail: if ( failID ) *failID = id; if ( fp ) { if ( failpos ) *failpos = ftell( fp ); fclose( fp ); } flexFree( flex ); return NULL; }
lwSurface *lwGetSurface5( picoMemStream_t *fp, int cksize, lwObject *obj ) { lwSurface *surf; lwTexture *tex; lwPlugin *shdr; char *s; float v[ 3 ]; unsigned int id, flags; unsigned short sz; int pos, rlen, i; tex = NULL; shdr = NULL; /* 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 ); /* name */ surf->name = 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 ] = getU1( fp ) / 255.0f; surf->color.rgb[ 1 ] = getU1( fp ) / 255.0f; surf->color.rgb[ 2 ] = getU1( fp ) / 255.0f; break; case ID_FLAG: flags = getU2( fp ); if ( flags & 4 ) surf->smooth = 1.56207f; if ( flags & 8 ) surf->color_hilite.val = 1.0f; if ( flags & 16 ) surf->color_filter.val = 1.0f; if ( flags & 128 ) surf->dif_sharp.val = 0.5f; if ( flags & 256 ) surf->sideflags = 3; if ( flags & 512 ) surf->add_trans.val = 1.0f; break; case ID_LUMI: surf->luminosity.val = getI2( fp ) / 256.0f; break; case ID_VLUM: surf->luminosity.val = getF4( fp ); break; case ID_DIFF: surf->diffuse.val = getI2( fp ) / 256.0f; break; case ID_VDIF: surf->diffuse.val = getF4( fp ); break; case ID_SPEC: surf->specularity.val = getI2( fp ) / 256.0f; break; case ID_VSPC: surf->specularity.val = getF4( fp ); break; case ID_GLOS: surf->glossiness.val = ( float ) log( getU2( fp )) / 20.7944f; break; case ID_SMAN: surf->smooth = getF4( fp ); break; case ID_REFL: surf->reflection.val.val = getI2( fp ) / 256.0f; break; case ID_RFLT: surf->reflection.options = getU2( fp ); break; case ID_RIMG: s = getS0( fp ); surf->reflection.cindex = add_clip( s, &obj->clip, &obj->nclips ); surf->reflection.options = 3; break; case ID_RSAN: surf->reflection.seam_angle = getF4( fp ); break; case ID_TRAN: surf->transparency.val.val = getI2( fp ) / 256.0f; break; case ID_RIND: surf->eta.val = getF4( fp ); break; case ID_BTEX: s = getbytes( fp, sz ); tex = get_texture( s ); lwListAdd( (void *) &surf->bump.tex, tex ); break; case ID_CTEX: s = getbytes( fp, sz ); tex = get_texture( s ); lwListAdd( (void *) &surf->color.tex, tex ); break; case ID_DTEX: s = getbytes( fp, sz ); tex = get_texture( s ); lwListAdd( (void *) &surf->diffuse.tex, tex ); break; case ID_LTEX: s = getbytes( fp, sz ); tex = get_texture( s ); lwListAdd( (void *) &surf->luminosity.tex, tex ); break; case ID_RTEX: s = getbytes( fp, sz ); tex = get_texture( s ); lwListAdd( (void *) &surf->reflection.val.tex, tex ); break; case ID_STEX: s = getbytes( fp, sz ); tex = get_texture( s ); lwListAdd( (void *) &surf->specularity.tex, tex ); break; case ID_TTEX: s = getbytes( fp, sz ); tex = get_texture( s ); lwListAdd( (void *) &surf->transparency.val.tex, tex ); break; case ID_TFLG: flags = getU2( fp ); i = 0; // greebo: initialise to fix compiler warnings if ( flags & 1 ) i = 0; if ( flags & 2 ) i = 1; if ( flags & 4 ) i = 2; tex->axis = i; if ( tex->type == ID_IMAP ) tex->param.imap.axis = i; else tex->param.proc.axis = i; if ( flags & 8 ) tex->tmap.coord_sys = 1; if ( flags & 16 ) tex->negative = 1; if ( flags & 32 ) tex->param.imap.pblend = 1; if ( flags & 64 ) { tex->param.imap.aa_strength = 1.0f; tex->param.imap.aas_flags = 1; } break; case ID_TSIZ: for ( i = 0; i < 3; i++ ) tex->tmap.size.val[ i ] = getF4( fp ); break; case ID_TCTR: for ( i = 0; i < 3; i++ ) tex->tmap.center.val[ i ] = getF4( fp ); break; case ID_TFAL: for ( i = 0; i < 3; i++ ) tex->tmap.falloff.val[ i ] = getF4( fp ); break; case ID_TVEL: for ( i = 0; i < 3; i++ ) v[ i ] = getF4( fp ); tex->tmap.center.eindex = add_tvel( tex->tmap.center.val, v, &obj->env, &obj->nenvs ); break; case ID_TCLR: if ( tex->type == ID_PROC ) for ( i = 0; i < 3; i++ ) tex->param.proc.value[ i ] = getU1( fp ) / 255.0f; break; case ID_TVAL: tex->param.proc.value[ 0 ] = getI2( fp ) / 256.0f; break; case ID_TAMP: if ( tex->type == ID_IMAP ) tex->param.imap.amplitude.val = getF4( fp ); break; case ID_TIMG: s = getS0( fp ); tex->param.imap.cindex = add_clip( s, &obj->clip, &obj->nclips ); break; case ID_TAAS: tex->param.imap.aa_strength = getF4( fp ); tex->param.imap.aas_flags = 1; break; case ID_TREF: tex->tmap.ref_object = getbytes( fp, sz ); break; case ID_TOPC: tex->opacity.val = getF4( fp ); break; case ID_TFP0: if ( tex->type == ID_IMAP ) tex->param.imap.wrapw.val = getF4( fp ); break; case ID_TFP1: if ( tex->type == ID_IMAP ) tex->param.imap.wraph.val = getF4( fp ); break; case ID_SHDR: shdr = _pico_calloc( 1, sizeof( lwPlugin )); if ( !shdr ) goto Fail; shdr->name = getbytes( fp, sz ); lwListAdd( (void *) &surf->shader, shdr ); surf->nshaders++; break; case ID_SDAT: shdr->data = getbytes( fp, sz ); 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; }
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; }