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lightning-sunbird  0.9+nobinonly
nsPkgInt.h
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00001 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
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00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #ifndef nsPkgInt_h__
00039 #define nsPkgInt_h__
00040 #include "nscore.h"
00041 
00042 typedef enum {
00043   eIdxSft4bits  = 3,
00044   eIdxSft8bits  = 2,
00045   eIdxSft16bits = 1
00046 } nsIdxSft; 
00047 
00048 typedef enum {
00049   eSftMsk4bits  = 7,
00050   eSftMsk8bits  = 3,
00051   eSftMsk16bits = 1
00052 } nsSftMsk; 
00053 
00054 typedef enum {
00055   eBitSft4bits  = 2,
00056   eBitSft8bits  = 3,
00057   eBitSft16bits = 4
00058 } nsBitSft; 
00059 
00060 typedef enum {
00061   eUnitMsk4bits  = 0x0000000FL,
00062   eUnitMsk8bits  = 0x000000FFL,
00063   eUnitMsk16bits = 0x0000FFFFL
00064 } nsUnitMsk; 
00065 
00066 typedef struct nsPkgInt {
00067   nsIdxSft  idxsft;
00068   nsSftMsk  sftmsk;
00069   nsBitSft  bitsft;
00070   nsUnitMsk unitmsk;
00071   PRUint32  *data;
00072 } nsPkgInt;
00073 
00074 
00075 #define PCK16BITS(a,b)            ((PRUint32)(((b) << 16) | (a)))
00076 
00077 #define PCK8BITS(a,b,c,d)         PCK16BITS( ((PRUint32)(((b) << 8) | (a))),  \
00078                                              ((PRUint32)(((d) << 8) | (c))))
00079 
00080 #define PCK4BITS(a,b,c,d,e,f,g,h) PCK8BITS(  ((PRUint32)(((b) << 4) | (a))), \
00081                                              ((PRUint32)(((d) << 4) | (c))), \
00082                                              ((PRUint32)(((f) << 4) | (e))), \
00083                                              ((PRUint32)(((h) << 4) | (g))) )
00084 
00085 #define GETFROMPCK(i, c) \
00086  (((((c).data)[(i)>>(c).idxsft])>>(((i)&(c).sftmsk)<<(c).bitsft))&(c).unitmsk)
00087 
00088 #endif /* nsPkgInt_h__ */
00089