/*
 * Microsoft Windows Compression API
 *
 * =========================================================================
 *
 *                          Open Watcom Project
 *
 * Copyright (c) 2004-2026 The Open Watcom Contributors. All Rights Reserved.
 *
 *    This file is automatically generated. Do not edit directly.
 *
 * =========================================================================
 */

#ifndef _COMPRESSAPI_H_
#define _COMPRESSAPI_H_

#ifndef _ENABLE_AUTODEPEND
 #pragma read_only_file
#endif

#include <windows.h>

typedef unsigned long COMPRESSOR_HANDLE;
typedef COMPRESSOR_HANDLE *PCOMPRESSOR_HANDLE;

typedef COMPRESSOR_HANDLE  DECOMPRESSOR_HANDLE;
typedef DECOMPRESSOR_HANDLE *PDECOMPRESSOR_HANDLE;

typedef void * (__cdecl *PFN_COMPRESS_ALLOCATE) (void *, size_t);
typedef VOID (__cdecl *PFN_COMPRESS_FREE) (void *, void *);

typedef struct _COMPRESS_ALLOCATION_ROUTINES {
  PFN_COMPRESS_ALLOCATE Allocate;
  PFN_COMPRESS_FREE     Free;
  void *                 UserContext;
} COMPRESS_ALLOCATION_ROUTINES, *PCOMPRESS_ALLOCATION_ROUTINES;

typedef enum  { 
  COMPRESS_INFORMATION_CLASS_INVALID     = 0x0,
  COMPRESS_INFORMATION_CLASS_LEVEL,
  COMPRESS_INFORMATION_CLASS_BLOCK_SIZE
} COMPRESS_INFORMATION_CLASS;

#define COMPRESS_ALGORITHM_INVALID      0
#define COMPRESS_ALGORITHM_NULL         1
#define COMPRESS_ALGORITHM_MSZIP        2
#define COMPRESS_ALGORITHM_XPRESS       3
#define COMPRESS_ALGORITHM_XPRESS_HUFF  4
#define COMPRESS_ALGORITHM_LZMS         5
#define COMPRESS_ALGORITHM_MAX          6

#ifdef __cplusplus
extern "C" {
#endif

  BOOL WINAPI CloseCompressor( COMPRESSOR_HANDLE );
  BOOL WINAPI CloseDecompressor( DECOMPRESSOR_HANDLE );
  BOOL WINAPI Compress( COMPRESSOR_HANDLE, void *, size_t, void *, size_t, size_t * );
  BOOL WINAPI CreateCompressor( DWORD, PCOMPRESS_ALLOCATION_ROUTINES, PCOMPRESSOR_HANDLE );
  BOOL WINAPI CreateDecompressor( DWORD, PCOMPRESS_ALLOCATION_ROUTINES, PDECOMPRESSOR_HANDLE );
  BOOL WINAPI Decompress( DECOMPRESSOR_HANDLE, void *, size_t, void *, size_t, size_t * );
  BOOL WINAPI QueryCompressorInformation( COMPRESSOR_HANDLE, COMPRESS_INFORMATION_CLASS, void *, size_t );
  BOOL WINAPI QueryDecompressorInformation( DECOMPRESSOR_HANDLE, COMPRESS_INFORMATION_CLASS, void *, size_t );
  BOOL WINAPI ResetCompressor( COMPRESSOR_HANDLE );
  BOOL WINAPI ResetDecompressor( DECOMPRESSOR_HANDLE );
  BOOL WINAPI SetCompressorInformation( COMPRESSOR_HANDLE, COMPRESS_INFORMATION_CLASS, void *, size_t );
  BOOL WINAPI SetDecompressorInformation( DECOMPRESSOR_HANDLE, COMPRESS_INFORMATION_CLASS, void *, size_t );
  
#ifdef __cplusplus
} /* extern "C" */
#endif

#endif /* _COMPRESSAPI_H_ */

