/*
 * DMLib
 * -- ZLib implementation
 * Public domain zlib decode v0.2 by Sean Barrett 2006-11-18
 * Modified and reformatted for DMLib by Matti 'ccr' Hamalainen
 */
#ifndef DMZLIB_H
#define DMZLIB_H

#include "dmlib.h"

#ifdef __cplusplus
extern "C" {
#endif


#define DM_ZLIB_HFAST_BITS  9  // accelerate all cases in default tables
#define DM_ZLIB_HFAST_SIZE  (1 << DM_ZLIB_HFAST_BITS)
#define DM_ZLIB_HFAST_MASK  (DM_ZLIB_HFAST_SIZE - 1)

#define DM_ZLIB_HUFF_CODES  (288)
#define DM_ZLIB_HUFF_DIST   (32)


typedef struct
{
    BOOL    initialized;

    Uint16  fast[DM_ZLIB_HFAST_SIZE];
    Uint16  firstCode[16];
    int     maxCode[16 + 1];
    Uint16  firstSymbol[16];

    Uint8   size[DM_ZLIB_HUFF_CODES];
    Uint16  value[DM_ZLIB_HUFF_CODES];
} DMZHuffmanContext;


typedef struct
{
    Uint8 *inBuffer, *inBufferStart, *inBufferEnd;

    int window;
    int numBits;
    Uint32 codeBuffer;

    Uint8 *outBuffer, *outBufferStart, *outBufferEnd;
    BOOL expandable;

    DMZHuffmanContext zlength, zdistance;
} DMZLibContext;


int    dmZLibInit();
void   dmZLibClose();

int    dmZLibInitInflate(DMZLibContext *ctx);
void   dmZLibCloseInflate(DMZLibContext *ctx);
int    dmZLibParseHeader(DMZLibContext * ctx, BOOL checkPNG);
int    dmZLibInflate(DMZLibContext * ctx);


#ifdef __cplusplus
}
#endif

#endif // DMZLIB_H