#ifndef _LWREADER_H_
#define _LWREADER_H_

#include "lwo.h"
#include "lwObject.h"
#include <istream>
#include <vector>

class lwReader
{
public:
	lwObject *readObjectFromFile( const char *nfilename);
	lwObject *readObjectFromStream( istream *nis);
private:
	istream *is;
	unsigned long chunksize;
	unsigned long currentchunkid;
	unsigned long formsize;
	unsigned long flen;

	bool *flags;

	lwObject *lwGetLWLO();
	lwObject *lwGetLWO2();

	int lwGetPoints( vpoints &points );
	int lwGetPolygons( vpolygons &polygons, int ptoffset );
	int lwGetLWOBPolygons( vpolygons &polygons, int ptoffset );
	int lwGetTags( vtags &tags );
	int lwGetPolygonTags( vtags &tags, int tagsoffset, vpolygons &polygons, int polygonsoffset );
	lwVMap *lwGetVMap( int ptoffset, int poloffset, int perpoly );
	lwClip *lwGetClip();
	lwEnvelope *lwGetEnvelope();
	int lwGetTHeader( int hsz, lwTexture &tex );
	int lwGetTMap( int tmapsz, lwTMap &tmap );
	lwImageMap *lwGetImageMap( int rsz, lwTexture &tex );
	lwProcedural *lwGetProcedural( int rsz, lwTexture &tex );
	lwGradient *lwGetGradient( int rsz, lwTexture &tex );
	lwTexture *lwGetTexture( int bloksz, unsigned int type );
	lwPlugin *lwGetShader( int bloksz );
	lwSurface *lwGetSurface();
	lwSurface *lwGetLWOBSurface( lwObject *obj );

	int add_clip( char *s, vclips &clips );
	int add_tvel( float pos[], float vel[], venvelopes &envelopes );
	lwTexture *get_texture( char *s );

	char *getbytes( int size );
	void skipbytes( int n );
	short getI2();
	long getI4();
	unsigned char getU1();
	unsigned short getU2();
	unsigned long getU4();
	int   getVX();
	float getF4();
	char *getS0();
	short sgetI2( char **bp );
	long  sgetI4( char **bp );
	unsigned char  sgetU1( char **bp );
	unsigned short sgetU2( char **bp );
	unsigned long  sgetU4( char **bp );
	int   sgetVX( char **bp );
	float sgetF4( char **bp );
	char *sgetS0( char **bp );

	unsigned short swappedShort(unsigned short w);
	unsigned long swappedLong(unsigned long w);
	void revbytes( void *bp, int elsize, int elcount );
};

#endif // _LWREADER_H_