Ryo Hagimoto / zbar_010

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.

zbar/timer.h@1:500d42699c34, 2016-04-19 (annotated)

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 /*------------------------------------------------------------------------
RyoheiHagimoto 0:56c5742b9e2b 2 * Copyright 2007-2009 (c) Jeff Brown <spadix@users.sourceforge.net>
RyoheiHagimoto 0:56c5742b9e2b 3 *
RyoheiHagimoto 0:56c5742b9e2b 4 * This file is part of the ZBar Bar Code Reader.
RyoheiHagimoto 0:56c5742b9e2b 5 *
RyoheiHagimoto 0:56c5742b9e2b 6 * The ZBar Bar Code Reader is free software; you can redistribute it
RyoheiHagimoto 0:56c5742b9e2b 7 * and/or modify it under the terms of the GNU Lesser Public License as
RyoheiHagimoto 0:56c5742b9e2b 8 * published by the Free Software Foundation; either version 2.1 of
RyoheiHagimoto 0:56c5742b9e2b 9 * the License, or (at your option) any later version.
RyoheiHagimoto 0:56c5742b9e2b 10 *
RyoheiHagimoto 0:56c5742b9e2b 11 * The ZBar Bar Code Reader is distributed in the hope that it will be
RyoheiHagimoto 0:56c5742b9e2b 12 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
RyoheiHagimoto 0:56c5742b9e2b 13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
RyoheiHagimoto 0:56c5742b9e2b 14 * GNU Lesser Public License for more details.
RyoheiHagimoto 0:56c5742b9e2b 15 *
RyoheiHagimoto 0:56c5742b9e2b 16 * You should have received a copy of the GNU Lesser Public License
RyoheiHagimoto 0:56c5742b9e2b 17 * along with the ZBar Bar Code Reader; if not, write to the Free
RyoheiHagimoto 0:56c5742b9e2b 18 * Software Foundation, Inc., 51 Franklin St, Fifth Floor,
RyoheiHagimoto 0:56c5742b9e2b 19 * Boston, MA 02110-1301 USA
RyoheiHagimoto 0:56c5742b9e2b 20 *
RyoheiHagimoto 0:56c5742b9e2b 21 * http://sourceforge.net/projects/zbar
RyoheiHagimoto 0:56c5742b9e2b 22 *------------------------------------------------------------------------*/
RyoheiHagimoto 0:56c5742b9e2b 23 #ifndef _ZBAR_TIMER_H_
RyoheiHagimoto 0:56c5742b9e2b 24 #define _ZBAR_TIMER_H_
RyoheiHagimoto 0:56c5742b9e2b 25
RyoheiHagimoto 0:56c5742b9e2b 26 #include <time.h>
RyoheiHagimoto 0:56c5742b9e2b 27 #include <sys/time.h> /* gettimeofday */
RyoheiHagimoto 0:56c5742b9e2b 28
RyoheiHagimoto 0:56c5742b9e2b 29 /* platform timer abstraction
RyoheiHagimoto 0:56c5742b9e2b 30 *
RyoheiHagimoto 0:56c5742b9e2b 31 * zbar_timer_t stores the absolute expiration of a delay from
RyoheiHagimoto 0:56c5742b9e2b 32 * when the timer was initialized.
RyoheiHagimoto 0:56c5742b9e2b 33 *
RyoheiHagimoto 0:56c5742b9e2b 34 * _zbar_timer_init() initialized timer with specified ms delay.
RyoheiHagimoto 0:56c5742b9e2b 35 * returns timer or NULL if timeout < 0 (no/infinite timeout)
RyoheiHagimoto 0:56c5742b9e2b 36 * _zbar_timer_check() returns ms remaining until expiration.
RyoheiHagimoto 0:56c5742b9e2b 37 * will be <= 0 if timer has expired
RyoheiHagimoto 0:56c5742b9e2b 38 */
RyoheiHagimoto 0:56c5742b9e2b 39
RyoheiHagimoto 0:56c5742b9e2b 40 #if _POSIX_TIMERS > 0
RyoheiHagimoto 0:56c5742b9e2b 41
RyoheiHagimoto 0:56c5742b9e2b 42 typedef struct timespec zbar_timer_t;
RyoheiHagimoto 0:56c5742b9e2b 43
RyoheiHagimoto 0:56c5742b9e2b 44 static inline zbar_timer_t *_zbar_timer_init (zbar_timer_t *timer,
RyoheiHagimoto 0:56c5742b9e2b 45 int delay)
RyoheiHagimoto 0:56c5742b9e2b 46 {
RyoheiHagimoto 0:56c5742b9e2b 47 if(delay < 0)
RyoheiHagimoto 0:56c5742b9e2b 48 return(NULL);
RyoheiHagimoto 0:56c5742b9e2b 49
RyoheiHagimoto 0:56c5742b9e2b 50 clock_gettime(CLOCK_REALTIME, timer);
RyoheiHagimoto 0:56c5742b9e2b 51 timer->tv_nsec += (delay % 1000) * 1000000;
RyoheiHagimoto 0:56c5742b9e2b 52 timer->tv_sec += (delay / 1000) + (timer->tv_nsec / 1000000000);
RyoheiHagimoto 0:56c5742b9e2b 53 timer->tv_nsec %= 1000000000;
RyoheiHagimoto 0:56c5742b9e2b 54 return(timer);
RyoheiHagimoto 0:56c5742b9e2b 55 }
RyoheiHagimoto 0:56c5742b9e2b 56
RyoheiHagimoto 0:56c5742b9e2b 57 static inline int _zbar_timer_check (zbar_timer_t *timer)
RyoheiHagimoto 0:56c5742b9e2b 58 {
RyoheiHagimoto 0:56c5742b9e2b 59 if(!timer)
RyoheiHagimoto 0:56c5742b9e2b 60 return(-1);
RyoheiHagimoto 0:56c5742b9e2b 61
RyoheiHagimoto 0:56c5742b9e2b 62 struct timespec now;
RyoheiHagimoto 0:56c5742b9e2b 63 clock_gettime(CLOCK_REALTIME, &now);
RyoheiHagimoto 0:56c5742b9e2b 64 int delay = ((timer->tv_sec - now.tv_sec) * 1000 +
RyoheiHagimoto 0:56c5742b9e2b 65 (timer->tv_nsec - now.tv_nsec) / 1000000);
RyoheiHagimoto 0:56c5742b9e2b 66 return((delay >= 0) ? delay : 0);
RyoheiHagimoto 0:56c5742b9e2b 67 }
RyoheiHagimoto 0:56c5742b9e2b 68
RyoheiHagimoto 0:56c5742b9e2b 69
RyoheiHagimoto 0:56c5742b9e2b 70 #elif defined(_WIN32)
RyoheiHagimoto 0:56c5742b9e2b 71
RyoheiHagimoto 0:56c5742b9e2b 72 # include <windows.h>
RyoheiHagimoto 0:56c5742b9e2b 73
RyoheiHagimoto 0:56c5742b9e2b 74 typedef DWORD zbar_timer_t;
RyoheiHagimoto 0:56c5742b9e2b 75
RyoheiHagimoto 0:56c5742b9e2b 76 static inline zbar_timer_t *_zbar_timer_init (zbar_timer_t *timer,
RyoheiHagimoto 0:56c5742b9e2b 77 int delay)
RyoheiHagimoto 0:56c5742b9e2b 78 {
RyoheiHagimoto 0:56c5742b9e2b 79 if(delay < 0)
RyoheiHagimoto 0:56c5742b9e2b 80 return(NULL);
RyoheiHagimoto 0:56c5742b9e2b 81
RyoheiHagimoto 0:56c5742b9e2b 82 *timer = timeGetTime() + delay;
RyoheiHagimoto 0:56c5742b9e2b 83 return(timer);
RyoheiHagimoto 0:56c5742b9e2b 84 }
RyoheiHagimoto 0:56c5742b9e2b 85
RyoheiHagimoto 0:56c5742b9e2b 86 static inline int _zbar_timer_check (zbar_timer_t *timer)
RyoheiHagimoto 0:56c5742b9e2b 87 {
RyoheiHagimoto 0:56c5742b9e2b 88 if(!timer)
RyoheiHagimoto 0:56c5742b9e2b 89 return(INFINITE);
RyoheiHagimoto 0:56c5742b9e2b 90
RyoheiHagimoto 0:56c5742b9e2b 91 int delay = *timer - timeGetTime();
RyoheiHagimoto 0:56c5742b9e2b 92 return((delay >= 0) ? delay : 0);
RyoheiHagimoto 0:56c5742b9e2b 93 }
RyoheiHagimoto 0:56c5742b9e2b 94
RyoheiHagimoto 0:56c5742b9e2b 95
RyoheiHagimoto 0:56c5742b9e2b 96 #else
RyoheiHagimoto 0:56c5742b9e2b 97
RyoheiHagimoto 0:56c5742b9e2b 98 typedef struct timeval zbar_timer_t;
RyoheiHagimoto 0:56c5742b9e2b 99
RyoheiHagimoto 0:56c5742b9e2b 100 static inline zbar_timer_t *_zbar_timer_init (zbar_timer_t *timer,
RyoheiHagimoto 0:56c5742b9e2b 101 int delay)
RyoheiHagimoto 0:56c5742b9e2b 102 {
RyoheiHagimoto 0:56c5742b9e2b 103 if(delay < 0)
RyoheiHagimoto 0:56c5742b9e2b 104 return(NULL);
RyoheiHagimoto 0:56c5742b9e2b 105
RyoheiHagimoto 0:56c5742b9e2b 106 gettimeofday(timer, NULL);
RyoheiHagimoto 0:56c5742b9e2b 107 timer->tv_usec += (delay % 1000) * 1000;
RyoheiHagimoto 0:56c5742b9e2b 108 timer->tv_sec += (delay / 1000) + (timer->tv_usec / 1000000);
RyoheiHagimoto 0:56c5742b9e2b 109 timer->tv_usec %= 1000000;
RyoheiHagimoto 0:56c5742b9e2b 110 return(timer);
RyoheiHagimoto 0:56c5742b9e2b 111 }
RyoheiHagimoto 0:56c5742b9e2b 112
RyoheiHagimoto 0:56c5742b9e2b 113 static inline int _zbar_timer_check (zbar_timer_t *timer)
RyoheiHagimoto 0:56c5742b9e2b 114 {
RyoheiHagimoto 0:56c5742b9e2b 115 if(!timer)
RyoheiHagimoto 0:56c5742b9e2b 116 return(-1);
RyoheiHagimoto 0:56c5742b9e2b 117
RyoheiHagimoto 0:56c5742b9e2b 118 struct timeval now;
RyoheiHagimoto 0:56c5742b9e2b 119 gettimeofday(&now, NULL);
RyoheiHagimoto 0:56c5742b9e2b 120 return((timer->tv_sec - now.tv_sec) * 1000 +
RyoheiHagimoto 0:56c5742b9e2b 121 (timer->tv_usec - now.tv_usec) / 1000);
RyoheiHagimoto 0:56c5742b9e2b 122 }
RyoheiHagimoto 0:56c5742b9e2b 123
RyoheiHagimoto 0:56c5742b9e2b 124 #endif
RyoheiHagimoto 0:56c5742b9e2b 125
RyoheiHagimoto 0:56c5742b9e2b 126 #endif
RyoheiHagimoto 0:56c5742b9e2b 127