mirror of
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05496df0d1
warning C4003: not enough arguments for function-like macro invocation 'warning' G_STMT_END macro is extended to the below form with MSVC __pragma(warning(push)) \ __pragma(warning(disable:4127)) \ while(0) \ __pragma(warning(pop)) So MSVC preprocessor will extend it further to __pragma(VBI_CAT_LEVEL_LOG(push)) ... Should rename warning() debug macro function therefore. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1018>
558 lines
15 KiB
C
558 lines
15 KiB
C
/*
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* libzvbi -- Miscellaneous cows and chickens
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*
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* Copyright (C) 2000-2003 Iñaki García Etxebarria
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* Copyright (C) 2002-2007 Michael H. Schimek
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*/
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/* $Id: misc.h,v 1.24 2013-07-02 02:32:31 mschimek Exp $ */
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#ifndef MISC_H
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#define MISC_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <stdarg.h>
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#include <string.h>
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#include <inttypes.h> /* (u)intXX_t */
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#include <sys/types.h> /* (s)size_t */
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#include <float.h> /* DBL_MAX */
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#include <limits.h> /* (S)SIZE_MAX */
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#include <assert.h>
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#include <glib.h>
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#include <gst/gst.h>
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#include "macros.h"
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#define N_ELEMENTS(array) (sizeof (array) / sizeof (*(array)))
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#ifdef __GNUC__
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#if __GNUC__ < 3
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/* Expect expression usually true/false, schedule accordingly. */
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# define likely(expr) (expr)
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# define unlikely(expr) (expr)
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#else
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# define likely(expr) __builtin_expect(expr, 1)
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# define unlikely(expr) __builtin_expect(expr, 0)
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#endif
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#undef __i386__
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#undef __i686__
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/* FIXME #cpu is deprecated
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#if #cpu (i386)
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# define __i386__ 1
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#endif
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#if #cpu (i686)
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# define __i686__ 1
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#endif
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*/
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/* &x == PARENT (&x.tm_min, struct tm, tm_min),
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safer than &x == (struct tm *) &x.tm_min. A NULL _ptr is safe and
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will return NULL, not -offsetof(_member). */
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#undef PARENT
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#define PARENT(_ptr, _type, _member) ({ \
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__typeof__ (&((_type *) 0)->_member) _p = (_ptr); \
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(_p != 0) ? (_type *)(((char *) _p) - offsetof (_type, \
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_member)) : (_type *) 0; \
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})
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/* Like PARENT(), to be used with const _ptr. */
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#define CONST_PARENT(_ptr, _type, _member) ({ \
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__typeof__ (&((const _type *) 0)->_member) _p = (_ptr); \
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(_p != 0) ? (const _type *)(((const char *) _p) - offsetof \
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(const _type, _member)) : (const _type *) 0; \
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})
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/* Note the following macros have no side effects only when you
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compile with GCC, so don't expect this. */
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/* Absolute value of int, long or long long without a branch.
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Note ABS (INT_MIN) -> INT_MAX + 1. */
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#undef ABS
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#define ABS(n) ({ \
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register __typeof__ (n) _n = (n), _t = _n; \
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if (-1 == (-1 >> 1)) { /* do we have signed shifts? */ \
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_t >>= sizeof (_t) * 8 - 1; \
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_n ^= _t; \
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_n -= _t; \
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} else if (_n < 0) { /* also warns if n is unsigned type */ \
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_n = -_n; \
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} \
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/* return */ _n; \
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})
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#undef MIN
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#define MIN(x, y) ({ \
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__typeof__ (x) _x = (x); \
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__typeof__ (y) _y = (y); \
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(void)(&_x == &_y); /* warn if types do not match */ \
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/* return */ (_x < _y) ? _x : _y; \
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})
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#undef MAX
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#define MAX(x, y) ({ \
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__typeof__ (x) _x = (x); \
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__typeof__ (y) _y = (y); \
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(void)(&_x == &_y); /* warn if types do not match */ \
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/* return */ (_x > _y) ? _x : _y; \
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})
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/* Note other compilers may swap only int, long or pointer. */
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#undef SWAP
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#define SWAP(x, y) \
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do { \
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__typeof__ (x) _x = x; \
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x = y; \
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y = _x; \
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} while (0)
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#undef SATURATE
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#ifdef __i686__ /* has conditional move */
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#define SATURATE(n, min, max) ({ \
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__typeof__ (n) _n = (n); \
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__typeof__ (n) _min = (min); \
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__typeof__ (n) _max = (max); \
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(void)(&_n == &_min); /* warn if types do not match */ \
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(void)(&_n == &_max); \
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if (_n < _min) \
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_n = _min; \
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if (_n > _max) \
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_n = _max; \
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/* return */ _n; \
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})
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#else
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#define SATURATE(n, min, max) ({ \
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__typeof__ (n) _n = (n); \
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__typeof__ (n) _min = (min); \
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__typeof__ (n) _max = (max); \
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(void)(&_n == &_min); /* warn if types do not match */ \
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(void)(&_n == &_max); \
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if (_n < _min) \
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_n = _min; \
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else if (_n > _max) \
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_n = _max; \
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/* return */ _n; \
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})
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#endif
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#else /* !__GNUC__ */
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#define likely(expr) (expr)
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#define unlikely(expr) (expr)
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#undef __i386__
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#undef __i686__
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static char *
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PARENT_HELPER (char *p, unsigned int offset)
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{ return (0 == p) ? ((char *) 0) : p - offset; }
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static const char *
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CONST_PARENT_HELPER (const char *p, unsigned int offset)
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{ return (0 == p) ? ((char *) 0) : p - offset; }
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#define PARENT(_ptr, _type, _member) \
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((0 == offsetof (_type, _member)) ? (_type *)(_ptr) \
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: (_type *) PARENT_HELPER ((char *)(_ptr), offsetof (_type, _member)))
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#define CONST_PARENT(_ptr, _type, _member) \
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((0 == offsetof (const _type, _member)) ? (const _type *)(_ptr) \
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: (const _type *) CONST_PARENT_HELPER ((const char *)(_ptr), \
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offsetof (const _type, _member)))
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#undef ABS
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#define ABS(n) (((n) < 0) ? -(n) : (n))
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#undef MIN
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#define MIN(x, y) (((x) < (y)) ? (x) : (y))
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#undef MAX
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#define MAX(x, y) (((x) > (y)) ? (x) : (y))
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#undef SWAP
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#define SWAP(x, y) \
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do { \
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long _x = x; \
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x = y; \
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y = _x; \
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} while (0)
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#undef SATURATE
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#define SATURATE(n, min, max) MIN (MAX (min, n), max)
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#endif /* !__GNUC__ */
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/* 32 bit constant byte reverse, e.g. 0xAABBCCDD -> 0xDDCCBBAA. */
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#define SWAB32(m) \
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(+ (((m) & 0xFF000000) >> 24) \
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+ (((m) & 0xFF0000) >> 8) \
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+ (((m) & 0xFF00) << 8) \
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+ (((m) & 0xFF) << 24))
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#ifdef HAVE_BUILTIN_POPCOUNT
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# define popcnt(x) __builtin_popcount ((uint32_t)(x))
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#else
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# define popcnt(x) _vbi_popcnt (x)
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#endif
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extern unsigned int
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_vbi_popcnt (uint32_t x);
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/* NB GCC inlines and optimizes these functions when size is const. */
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#define SET(var) memset (&(var), ~0, sizeof (var))
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#define CLEAR(var) memset (&(var), 0, sizeof (var))
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/* Useful to copy arrays, otherwise use assignment. */
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#define COPY(d, s) \
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(assert (sizeof (d) == sizeof (s)), memcpy (d, s, sizeof (d)))
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/* Copy string const into char array. */
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#define STRACPY(array, s) \
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do { \
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/* Complain if s is no string const or won't fit. */ \
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const char t_[sizeof (array) - 1] _vbi_unused = s; \
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\
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memcpy (array, s, sizeof (s)); \
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} while (0)
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/* Copy bits through mask. */
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#define COPY_SET_MASK(dest, from, mask) \
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(dest ^= (from) ^ (dest & (mask)))
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/* Set bits if cond is TRUE, clear if FALSE. */
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#define COPY_SET_COND(dest, bits, cond) \
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((cond) ? (dest |= (bits)) : (dest &= ~(bits)))
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/* Set and clear bits. */
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#define COPY_SET_CLEAR(dest, set, clear) \
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(dest = (dest & ~(clear)) | (set))
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/* For applications, debugging and fault injection during unit tests. */
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#define vbi_malloc malloc
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#define vbi_realloc realloc
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#define vbi_strdup strdup
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#define vbi_free free
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#define vbi_cache_malloc vbi_malloc
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#define vbi_cache_free vbi_free
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/* Helper functions. */
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_vbi_inline int
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_vbi_to_ascii (int c)
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{
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if (c < 0)
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return '?';
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c &= 0x7F;
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if (c < 0x20 || c >= 0x7F)
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return '.';
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return c;
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}
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typedef struct {
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const char * key;
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int value;
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} _vbi_key_value_pair;
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extern vbi_bool
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_vbi_keyword_lookup (int * value,
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const char ** inout_s,
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const _vbi_key_value_pair * table,
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unsigned int n_pairs)
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_vbi_nonnull ((1, 2, 3));
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extern void
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_vbi_shrink_vector_capacity (void ** vector,
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size_t * capacity,
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size_t min_capacity,
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size_t element_size)
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_vbi_nonnull ((1, 2));
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extern vbi_bool
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_vbi_grow_vector_capacity (void ** vector,
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size_t * capacity,
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size_t min_capacity,
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size_t element_size)
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_vbi_nonnull ((1, 2));
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GST_DEBUG_CATEGORY_EXTERN (libzvbi_debug);
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#ifndef GST_DISABLE_GST_DEBUG
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/* Logging stuff. */
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#ifdef G_HAVE_ISO_VARARGS
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#define VBI_CAT_LEVEL_LOG(level,object,...) G_STMT_START{ \
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if (G_UNLIKELY ((level) <= GST_LEVEL_MAX && (level) <= _gst_debug_min)) { \
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gst_debug_log (libzvbi_debug, (level), __FILE__, GST_FUNCTION, __LINE__, \
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(GObject *) (object), __VA_ARGS__); \
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} \
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}G_STMT_END
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#else /* G_HAVE_GNUC_VARARGS */
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#ifdef G_HAVE_GNUC_VARARGS
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#define VBI_CAT_LEVEL_LOG(level,object,args...) G_STMT_START{ \
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if (G_UNLIKELY ((level) <= GST_LEVEL_MAX && (level) <= _gst_debug_min)) { \
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gst_debug_log (libzvbi_debug, (level), __FILE__, GST_FUNCTION, __LINE__, \
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(GObject *) (object), ##args ); \
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} \
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}G_STMT_END
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#else /* no variadic macros, use inline */
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static inline void
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VBI_CAT_LEVEL_LOG_valist (GstDebugCategory * cat,
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GstDebugLevel level, gpointer object, const char *format, va_list varargs)
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{
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if (G_UNLIKELY ((level) <= GST_LEVEL_MAX && (level) <= _gst_debug_min)) {
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gst_debug_log_valist (cat, level, "", "", 0, (GObject *) object, format,
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varargs);
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}
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}
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static inline void
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VBI_CAT_LEVEL_LOG (GstDebugLevel level,
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gpointer object, const char *format, ...)
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{
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va_list varargs;
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va_start (varargs, format);
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GST_CAT_LEVEL_LOG_valist (libzvbi_debug, level, object, format, varargs);
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va_end (varargs);
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}
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#endif
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#endif /* G_HAVE_ISO_VARARGS */
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#else
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static inline void
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VBI_CAT_LEVEL_LOG (GstDebugLevel level,
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gpointer object, const char *format, ...)
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{
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}
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#endif /* GST_DISABLE_GST_DEBUG */
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#ifdef G_HAVE_GNUC_VARARGS
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#define error(hook, templ, args...) \
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VBI_CAT_LEVEL_LOG (GST_LEVEL_ERROR, NULL, templ , ##args)
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#define warn(hook, templ, args...) \
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VBI_CAT_LEVEL_LOG (GST_LEVEL_WARNING, NULL, templ , ##args)
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#define notice(hook, templ, args...) \
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VBI_CAT_LEVEL_LOG (GST_LEVEL_INFO, NULL, templ , ##args)
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#define info(hook, templ, args...) \
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VBI_CAT_LEVEL_LOG (GST_LEVEL_INFO, NULL, templ , ##args)
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#define debug1(hook, templ, args...) \
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VBI_CAT_LEVEL_LOG (GST_LEVEL_DEBUG, NULL, templ , ##args)
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#define debug2(hook, templ, args...) \
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VBI_CAT_LEVEL_LOG (GST_LEVEL_LOG, NULL, templ , ##args)
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#define debug3(hook, templ, args...) \
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VBI_CAT_LEVEL_LOG (GST_LEVEL_TRACE, NULL, templ , ##args)
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#elif defined(G_HAVE_ISO_VARARGS)
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#define error(hook, templ, ...) \
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VBI_CAT_LEVEL_LOG (GST_LEVEL_ERROR, NULL, templ, __VA_ARGS__)
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#define warn(hook, templ, ...) \
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VBI_CAT_LEVEL_LOG (GST_LEVEL_WARNING, NULL, templ, __VA_ARGS__)
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#define notice(hook, templ, ...) \
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VBI_CAT_LEVEL_LOG (GST_LEVEL_INFO, NULL, templ, __VA_ARGS__)
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#define info(hook, templ, ...) \
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VBI_CAT_LEVEL_LOG (GST_LEVEL_INFO, NULL, templ, __VA_ARGS__)
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#define debug1(hook, templ, ...) \
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VBI_CAT_LEVEL_LOG (GST_LEVEL_DEBUG, NULL, templ, __VA_ARGS__)
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#define debug2(hook, templ, ...) \
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VBI_CAT_LEVEL_LOG (GST_LEVEL_LOG, NULL, templ, __VA_ARGS__)
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#define debug3(hook, templ, ...) \
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VBI_CAT_LEVEL_LOG (GST_LEVEL_TRACE, NULL, templ, __VA_ARGS__)
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#else
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/* if someone needs this, they can implement the inline functions for it */
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#error "variadic macros are required"
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#endif
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#if 0 /* Replaced logging with GStreamer logging system */
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extern _vbi_log_hook _vbi_global_log;
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extern void
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_vbi_log_vprintf (vbi_log_fn * log_fn,
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void * user_data,
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vbi_log_mask level,
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const char * source_file,
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const char * context,
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const char * templ,
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va_list ap)
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_vbi_nonnull ((1, 4, 5, 6));
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extern void
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_vbi_log_printf (vbi_log_fn * log_fn,
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void * user_data,
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vbi_log_mask level,
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const char * source_file,
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const char * context,
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const char * templ,
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...)
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_vbi_nonnull ((1, 4, 5, 6)) _vbi_format ((printf, 6, 7));
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#define _vbi_log(hook, level, templ, args...) \
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do { \
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_vbi_log_hook *_h = hook; \
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\
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if ((NULL != _h && 0 != (_h->mask & level)) \
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|| (_h = &_vbi_global_log, 0 != (_h->mask & level))) \
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_vbi_log_printf (_h->fn, _h->user_data, \
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level, __FILE__, __FUNCTION__, \
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templ , ##args); \
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} while (0)
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#define _vbi_vlog(hook, level, templ, ap) \
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do { \
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_vbi_log_hook *_h = hook; \
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\
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if ((NULL != _h && 0 != (_h->mask & level)) \
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|| (_h = &_vbi_global_log, 0 != (_h->mask & level))) \
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_vbi_log_vprintf (_h->fn, _h->user_data, \
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level, __FILE__, __FUNCTION__, \
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templ, ap); \
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} while (0)
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#define error(hook, templ, args...) \
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_vbi_log (hook, VBI_LOG_ERROR, templ , ##args)
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#define warning(hook, templ, args...) \
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_vbi_log (hook, VBI_LOG_ERROR, templ , ##args)
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#define notice(hook, templ, args...) \
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_vbi_log (hook, VBI_LOG_NOTICE, templ , ##args)
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#define info(hook, templ, args...) \
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_vbi_log (hook, VBI_LOG_INFO, templ , ##args)
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#define debug1(hook, templ, args...) \
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_vbi_log (hook, VBI_LOG_DEBUG, templ , ##args)
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#define debug2(hook, templ, args...) \
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_vbi_log (hook, VBI_LOG_DEBUG2, templ , ##args)
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#define debug3(hook, templ, args...) \
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_vbi_log (hook, VBI_LOG_DEBUG3, templ , ##args)
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#endif
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/* Portability stuff. */
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/* These should be defined in inttypes.h. */
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#ifndef PRId64
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# define PRId64 "lld"
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#endif
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#ifndef PRIu64
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# define PRIu64 "llu"
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#endif
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#ifndef PRIx64
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# define PRIx64 "llx"
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#endif
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/* Should be defined in C99 limits.h? */
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#ifndef SIZE_MAX
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# define SIZE_MAX ((size_t) -1)
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#endif
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|
|
|
#ifndef TIME_MIN
|
|
# define TIME_MIN (_vbi_time_min ())
|
|
_vbi_inline time_t
|
|
_vbi_time_min (void)
|
|
{
|
|
const time_t t = (time_t) -1.25;
|
|
|
|
if (t < -1) {
|
|
return (time_t)((sizeof (time_t) > 4) ? DBL_MIN : FLT_MIN);
|
|
} else if (t < 0) {
|
|
return ((uint64_t) 1) << (sizeof (time_t) * 8 - 1);
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifndef TIME_MAX
|
|
# define TIME_MAX (_vbi_time_max ())
|
|
_vbi_inline time_t
|
|
_vbi_time_max (void)
|
|
{
|
|
const time_t t = (time_t) -1.25;
|
|
|
|
if (t < -1) {
|
|
return (time_t)((sizeof (time_t) > 4) ? DBL_MAX : FLT_MAX);
|
|
} else if (t < 0) {
|
|
/* Most likely signed 32 or 64 bit. */
|
|
return (((uint64_t) 1) << (sizeof (time_t) * 8 - 1)) - 1;
|
|
} else {
|
|
return -1;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* __va_copy is a GNU extension. */
|
|
#ifndef __va_copy
|
|
# define __va_copy(ap1, ap2) do { ap1 = ap2; } while (0)
|
|
#endif
|
|
|
|
#if 0
|
|
/* Use this instead of strncpy(). strlcpy() is a BSD extension. */
|
|
#ifndef HAVE_STRLCPY
|
|
# define strlcpy _vbi_strlcpy
|
|
#endif
|
|
#undef strncpy
|
|
#define strncpy use_strlcpy_instead
|
|
|
|
extern size_t
|
|
_vbi_strlcpy (char * dst,
|
|
const char * src,
|
|
size_t size)
|
|
_vbi_nonnull ((1, 2));
|
|
#endif
|
|
|
|
/* /\* strndup() is a BSD/GNU extension. *\/ */
|
|
/* #ifndef HAVE_STRNDUP */
|
|
/* # define strndup _vbi_strndup */
|
|
/* #endif */
|
|
|
|
/* extern char * */
|
|
/* _vbi_strndup (const char * s, */
|
|
/* size_t len) */
|
|
/* _vbi_nonnull ((1)); */
|
|
|
|
/* vasprintf() is a GNU extension. */
|
|
#ifndef HAVE_VASPRINTF
|
|
# define vasprintf _vbi_vasprintf
|
|
#endif
|
|
|
|
extern int
|
|
_vbi_vasprintf (char ** dstp,
|
|
const char * templ,
|
|
va_list ap)
|
|
_vbi_nonnull ((1, 2));
|
|
|
|
/* asprintf() is a GNU extension. */
|
|
#ifndef HAVE_ASPRINTF
|
|
# define asprintf _vbi_asprintf
|
|
#endif
|
|
|
|
extern int
|
|
_vbi_asprintf (char ** dstp,
|
|
const char * templ,
|
|
...)
|
|
_vbi_nonnull ((1, 2)) _vbi_format ((printf, 2, 3));
|
|
|
|
#undef sprintf
|
|
#define sprintf use_snprintf_or_asprintf_instead
|
|
|
|
#endif /* MISC_H */
|
|
|
|
/*
|
|
Local variables:
|
|
c-set-style: K&R
|
|
c-basic-offset: 8
|
|
End:
|
|
*/
|