/*  -*- C++ -*-
    SPDX-FileCopyrightText: 1998 Netscape Communications Corporation <developer@mozilla.org>

    SPDX-License-Identifier: MIT
*/

#ifndef nsPkgInt_h__
#define nsPkgInt_h__

namespace kencodingprober
{
typedef enum {
    eIdxSft4bits  = 3,
    eIdxSft8bits  = 2,
    eIdxSft16bits = 1
} nsIdxSft;

typedef enum {
    eSftMsk4bits  = 7,
    eSftMsk8bits  = 3,
    eSftMsk16bits = 1
} nsSftMsk;

typedef enum {
    eBitSft4bits  = 2,
    eBitSft8bits  = 3,
    eBitSft16bits = 4
} nsBitSft;

typedef enum {
    eUnitMsk4bits  = 0x0000000FL,
    eUnitMsk8bits  = 0x000000FFL,
    eUnitMsk16bits = 0x0000FFFFL
} nsUnitMsk;

typedef struct nsPkgInt {
    nsIdxSft  idxsft;
    nsSftMsk  sftmsk;
    nsBitSft  bitsft;
    nsUnitMsk unitmsk;
    const unsigned int  *data;
} nsPkgInt;
}

#define PCK16BITS(a,b)            ((unsigned int)(((b) << 16) | (a)))

#define PCK8BITS(a,b,c,d)         PCK16BITS( ((unsigned int)(((b) << 8) | (a))),  \
        ((unsigned int)(((d) << 8) | (c))))

#define PCK4BITS(a,b,c,d,e,f,g,h) PCK8BITS(  ((unsigned int)(((b) << 4) | (a))), \
        ((unsigned int)(((d) << 4) | (c))), \
        ((unsigned int)(((f) << 4) | (e))), \
        ((unsigned int)(((h) << 4) | (g))) )

#define GETFROMPCK(i, c) \
    (((((c).data)[(i)>>(c).idxsft])>>(((i)&(c).sftmsk)<<(c).bitsft))&(c).unitmsk)

#endif /* nsPkgInt_h__ */

