ZBar bar code reader . http://zbar.sourceforge.net/ ZBar is licensed under the GNU LGPL 2.1 to enable development of both open source and commercial projects.

Dependents:   GR-PEACH_Camera_in_barcode levkov_ov7670

LICENSE

The ZBar Bar Code Reader is Copyright (C) 2007-2009 Jeff Brown <spadix@users.sourceforge.net> The QR Code reader is Copyright (C) 1999-2009 Timothy B. Terriberry <tterribe@xiph.org>

You can redistribute this library and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

ISAAC is based on the public domain implementation by Robert J. Jenkins Jr., and is itself public domain.

Portions of the bit stream reader are copyright (C) The Xiph.Org Foundation 1994-2008, and are licensed under a BSD-style license.

The Reed-Solomon decoder is derived from an implementation (C) 1991-1995 Henry Minsky (hqm@ua.com, hqm@ai.mit.edu), and is licensed under the LGPL with permission.

Committer:
RyoheiHagimoto
Date:
Tue Apr 19 02:19:39 2016 +0000
Revision:
1:500d42699c34
Parent:
0:56c5742b9e2b
Add copying.txt and license.txt

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RyoheiHagimoto 0:56c5742b9e2b 1 /*Copyright (C) 2008-2009 Timothy B. Terriberry (tterribe@xiph.org)
RyoheiHagimoto 0:56c5742b9e2b 2 You can redistribute this library and/or modify it under the terms of the
RyoheiHagimoto 0:56c5742b9e2b 3 GNU Lesser General Public License as published by the Free Software
RyoheiHagimoto 0:56c5742b9e2b 4 Foundation; either version 2.1 of the License, or (at your option) any later
RyoheiHagimoto 0:56c5742b9e2b 5 version.*/
RyoheiHagimoto 0:56c5742b9e2b 6 #if !defined(_qrcode_util_H)
RyoheiHagimoto 0:56c5742b9e2b 7 # define _qrcode_util_H (1)
RyoheiHagimoto 0:56c5742b9e2b 8
RyoheiHagimoto 0:56c5742b9e2b 9 #define QR_MAXI(_a,_b) ((_a)-((_a)-(_b)&-((_b)>(_a))))
RyoheiHagimoto 0:56c5742b9e2b 10 #define QR_MINI(_a,_b) ((_a)+((_b)-(_a)&-((_b)<(_a))))
RyoheiHagimoto 0:56c5742b9e2b 11 #define QR_SIGNI(_x) (((_x)>0)-((_x)<0))
RyoheiHagimoto 0:56c5742b9e2b 12 #define QR_SIGNMASK(_x) (-((_x)<0))
RyoheiHagimoto 0:56c5742b9e2b 13 /*Unlike copysign(), simply inverts the sign of _a if _b is negative.*/
RyoheiHagimoto 0:56c5742b9e2b 14 #define QR_FLIPSIGNI(_a,_b) ((_a)+QR_SIGNMASK(_b)^QR_SIGNMASK(_b))
RyoheiHagimoto 0:56c5742b9e2b 15 #define QR_COPYSIGNI(_a,_b) QR_FLIPSIGNI(abs(_a),_b)
RyoheiHagimoto 0:56c5742b9e2b 16 /*Divides a signed integer by a positive value with exact rounding.*/
RyoheiHagimoto 0:56c5742b9e2b 17 #define QR_DIVROUND(_x,_y) (((_x)+QR_FLIPSIGNI(_y>>1,_x))/(_y))
RyoheiHagimoto 0:56c5742b9e2b 18 #define QR_CLAMPI(_a,_b,_c) (QR_MAXI(_a,QR_MINI(_b,_c)))
RyoheiHagimoto 0:56c5742b9e2b 19 #define QR_CLAMP255(_x) ((unsigned char)((((_x)<0)-1)&((_x)|-((_x)>255))))
RyoheiHagimoto 0:56c5742b9e2b 20 /*Swaps two integers _a and _b if _a>_b.*/
RyoheiHagimoto 0:56c5742b9e2b 21 #define QR_SORT2I(_a,_b) \
RyoheiHagimoto 0:56c5742b9e2b 22 do{ \
RyoheiHagimoto 0:56c5742b9e2b 23 int t__; \
RyoheiHagimoto 0:56c5742b9e2b 24 t__=QR_MINI(_a,_b)^(_a); \
RyoheiHagimoto 0:56c5742b9e2b 25 (_a)^=t__; \
RyoheiHagimoto 0:56c5742b9e2b 26 (_b)^=t__; \
RyoheiHagimoto 0:56c5742b9e2b 27 } \
RyoheiHagimoto 0:56c5742b9e2b 28 while(0)
RyoheiHagimoto 0:56c5742b9e2b 29 #define QR_ILOG0(_v) (!!((_v)&0x2))
RyoheiHagimoto 0:56c5742b9e2b 30 #define QR_ILOG1(_v) (((_v)&0xC)?2+QR_ILOG0((_v)>>2):QR_ILOG0(_v))
RyoheiHagimoto 0:56c5742b9e2b 31 #define QR_ILOG2(_v) (((_v)&0xF0)?4+QR_ILOG1((_v)>>4):QR_ILOG1(_v))
RyoheiHagimoto 0:56c5742b9e2b 32 #define QR_ILOG3(_v) (((_v)&0xFF00)?8+QR_ILOG2((_v)>>8):QR_ILOG2(_v))
RyoheiHagimoto 0:56c5742b9e2b 33 #define QR_ILOG4(_v) (((_v)&0xFFFF0000)?16+QR_ILOG3((_v)>>16):QR_ILOG3(_v))
RyoheiHagimoto 0:56c5742b9e2b 34 /*Computes the integer logarithm of a (positive, 32-bit) constant.*/
RyoheiHagimoto 0:56c5742b9e2b 35 #define QR_ILOG(_v) ((int)QR_ILOG4((unsigned)(_v)))
RyoheiHagimoto 0:56c5742b9e2b 36
RyoheiHagimoto 0:56c5742b9e2b 37 /*Multiplies 32-bit numbers _a and _b, adds (possibly 64-bit) number _r, and
RyoheiHagimoto 0:56c5742b9e2b 38 takes bits [_s,_s+31] of the result.*/
RyoheiHagimoto 0:56c5742b9e2b 39 #define QR_FIXMUL(_a,_b,_r,_s) ((int)((_a)*(long long)(_b)+(_r)>>(_s)))
RyoheiHagimoto 0:56c5742b9e2b 40 /*Multiplies 32-bit numbers _a and _b, adds (possibly 64-bit) number _r, and
RyoheiHagimoto 0:56c5742b9e2b 41 gives all 64 bits of the result.*/
RyoheiHagimoto 0:56c5742b9e2b 42 #define QR_EXTMUL(_a,_b,_r) ((_a)*(long long)(_b)+(_r))
RyoheiHagimoto 0:56c5742b9e2b 43
RyoheiHagimoto 0:56c5742b9e2b 44 unsigned qr_isqrt(unsigned _val);
RyoheiHagimoto 0:56c5742b9e2b 45 unsigned qr_ihypot(int _x,int _y);
RyoheiHagimoto 0:56c5742b9e2b 46 int qr_ilog(unsigned _val);
RyoheiHagimoto 0:56c5742b9e2b 47
RyoheiHagimoto 0:56c5742b9e2b 48 #endif
RyoheiHagimoto 0:56c5742b9e2b 49