2006-09-10 14:02:42 +00:00
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/*
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* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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*
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2006-10-07 15:30:46 +00:00
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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2006-09-10 14:02:42 +00:00
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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2006-10-07 15:30:46 +00:00
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* version 2.1 of the License, or (at your option) any later version.
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2006-09-10 14:02:42 +00:00
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*
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2006-10-07 15:30:46 +00:00
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* FFmpeg is distributed in the hope that it will be useful,
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2006-09-10 14:02:42 +00:00
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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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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2006-10-07 15:30:46 +00:00
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* License along with FFmpeg; if not, write to the Free Software
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2006-09-10 14:02:42 +00:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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2006-07-16 16:32:48 +00:00
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/**
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2009-02-01 02:00:19 +00:00
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* @file libavutil/internal.h
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2009-01-28 00:16:05 +00:00
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* common internal API header
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2006-07-16 16:32:48 +00:00
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*/
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2008-08-31 07:39:47 +00:00
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#ifndef AVUTIL_INTERNAL_H
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#define AVUTIL_INTERNAL_H
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2006-07-16 16:32:48 +00:00
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2007-07-14 14:34:40 +00:00
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#if !defined(DEBUG) && !defined(NDEBUG)
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# define NDEBUG
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#endif
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2009-01-25 21:54:05 +00:00
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#include <limits.h>
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2007-06-16 22:59:13 +00:00
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#include <stdint.h>
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2007-07-14 14:34:40 +00:00
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#include <stddef.h>
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#include <assert.h>
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2009-01-30 18:46:39 +00:00
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#include "config.h"
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2008-12-20 17:33:35 +00:00
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#include "common.h"
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2009-01-30 18:52:51 +00:00
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#include "mem.h"
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2009-01-15 22:58:35 +00:00
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#include "timer.h"
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2007-06-16 22:59:13 +00:00
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2007-08-13 15:28:29 +00:00
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#ifndef attribute_align_arg
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2009-06-27 08:34:04 +00:00
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#if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,2)
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2007-08-13 15:28:29 +00:00
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# define attribute_align_arg __attribute__((force_align_arg_pointer))
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#else
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# define attribute_align_arg
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#endif
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#endif
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2006-12-06 21:27:08 +00:00
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#ifndef attribute_used
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2008-12-20 17:33:35 +00:00
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#if AV_GCC_VERSION_AT_LEAST(3,1)
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2006-12-06 21:27:08 +00:00
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# define attribute_used __attribute__((used))
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#else
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# define attribute_used
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#endif
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#endif
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2010-01-29 03:26:14 +00:00
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#ifndef av_alias
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2010-02-20 12:22:24 +00:00
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#if HAVE_ATTRIBUTE_MAY_ALIAS && (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(3,3)
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2010-01-29 03:26:14 +00:00
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# define av_alias __attribute__((may_alias))
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#else
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# define av_alias
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#endif
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#endif
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2006-12-06 23:23:20 +00:00
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#ifndef INT16_MIN
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2009-09-01 16:00:45 +00:00
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#define INT16_MIN (-0x7fff - 1)
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2006-12-06 23:23:20 +00:00
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#endif
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#ifndef INT16_MAX
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#define INT16_MAX 0x7fff
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#endif
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#ifndef INT32_MIN
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2009-09-01 16:00:45 +00:00
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#define INT32_MIN (-0x7fffffff - 1)
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2006-12-06 23:23:20 +00:00
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#endif
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#ifndef INT32_MAX
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#define INT32_MAX 0x7fffffff
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#endif
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#ifndef UINT32_MAX
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#define UINT32_MAX 0xffffffff
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#endif
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#ifndef INT64_MIN
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2009-09-01 16:00:45 +00:00
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#define INT64_MIN (-0x7fffffffffffffffLL - 1)
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2006-12-06 23:23:20 +00:00
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#endif
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#ifndef INT64_MAX
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2006-12-06 23:46:11 +00:00
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#define INT64_MAX INT64_C(9223372036854775807)
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2006-12-06 23:23:20 +00:00
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#endif
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#ifndef UINT64_MAX
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2006-12-06 23:46:11 +00:00
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#define UINT64_MAX UINT64_C(0xFFFFFFFFFFFFFFFF)
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2006-12-06 23:23:20 +00:00
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#endif
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#ifndef INT_BIT
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2009-02-21 16:03:30 +00:00
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# define INT_BIT (CHAR_BIT * sizeof(int))
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2006-12-06 23:23:20 +00:00
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#endif
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2006-07-16 16:32:48 +00:00
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#ifndef offsetof
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2009-09-01 16:00:45 +00:00
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# define offsetof(T, F) ((unsigned int)((char *)&((T *)0)->F))
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2006-07-16 16:32:48 +00:00
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#endif
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2009-05-25 01:50:37 +00:00
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/* Use to export labels from asm. */
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#define LABEL_MANGLE(a) EXTERN_PREFIX #a
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2006-07-16 16:32:48 +00:00
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// Use rip-relative addressing if compiling PIC code on x86-64.
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2009-01-13 23:44:16 +00:00
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#if ARCH_X86_64 && defined(PIC)
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2008-03-22 18:15:12 +00:00
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# define LOCAL_MANGLE(a) #a "(%%rip)"
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2008-03-17 09:22:11 +00:00
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#else
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2008-03-22 18:15:12 +00:00
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# define LOCAL_MANGLE(a) #a
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2006-11-14 03:35:50 +00:00
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#endif
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2006-07-16 16:32:48 +00:00
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2008-03-22 18:15:12 +00:00
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#define MANGLE(a) EXTERN_PREFIX LOCAL_MANGLE(a)
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2006-07-16 16:32:48 +00:00
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/* debug stuff */
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/* dprintf macros */
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2006-11-14 03:35:50 +00:00
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#ifdef DEBUG
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2007-03-12 12:36:41 +00:00
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# define dprintf(pctx, ...) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__)
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2006-11-14 03:35:50 +00:00
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#else
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2007-03-12 12:36:41 +00:00
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# define dprintf(pctx, ...)
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2006-11-14 03:35:50 +00:00
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#endif
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2006-07-16 16:32:48 +00:00
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2006-11-14 03:35:50 +00:00
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#define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0)
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2006-07-16 16:32:48 +00:00
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2006-11-14 21:57:27 +00:00
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/* math */
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2008-01-21 13:33:18 +00:00
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extern const uint8_t ff_sqrt_tab[256];
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2006-07-16 16:32:48 +00:00
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2008-03-19 06:17:43 +00:00
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static inline av_const unsigned int ff_sqrt(unsigned int a)
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2006-07-16 16:32:48 +00:00
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{
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2008-01-21 13:33:18 +00:00
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unsigned int b;
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2009-09-01 16:00:45 +00:00
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if (a < 255) return (ff_sqrt_tab[a + 1] - 1) >> 4;
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else if (a < (1 << 12)) b = ff_sqrt_tab[a >> 4] >> 2;
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2009-01-13 23:44:16 +00:00
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#if !CONFIG_SMALL
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2009-09-01 16:00:45 +00:00
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else if (a < (1 << 14)) b = ff_sqrt_tab[a >> 6] >> 1;
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else if (a < (1 << 16)) b = ff_sqrt_tab[a >> 8] ;
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2008-01-21 13:33:18 +00:00
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#endif
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2009-09-01 16:00:45 +00:00
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else {
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int s = av_log2_16bit(a >> 16) >> 1;
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unsigned int c = a >> (s + 2);
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b = ff_sqrt_tab[c >> (s + 8)];
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b = FASTDIV(c,b) + (b << s);
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2006-07-16 16:32:48 +00:00
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}
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2008-01-21 13:33:18 +00:00
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2009-09-01 16:00:45 +00:00
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return b - (a < b * b);
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2006-07-16 16:32:48 +00:00
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}
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2009-01-13 23:44:16 +00:00
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#if ARCH_X86
|
2006-07-16 16:32:48 +00:00
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#define MASK_ABS(mask, level)\
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2008-10-16 13:34:09 +00:00
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__asm__ volatile(\
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2008-02-28 17:01:35 +00:00
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"cltd \n\t"\
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2006-07-16 16:32:48 +00:00
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"xorl %1, %0 \n\t"\
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"subl %1, %0 \n\t"\
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: "+a" (level), "=&d" (mask)\
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);
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#else
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#define MASK_ABS(mask, level)\
|
2009-09-01 16:00:45 +00:00
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mask = level >> 31;\
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level = (level ^ mask) - mask;
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2006-07-16 16:32:48 +00:00
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#endif
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2009-01-28 23:16:49 +00:00
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/* avoid usage of dangerous/inappropriate system functions */
|
2007-07-08 15:56:31 +00:00
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#undef malloc
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2006-07-16 16:32:48 +00:00
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#define malloc please_use_av_malloc
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2007-07-08 15:56:31 +00:00
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#undef free
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2006-07-16 16:32:48 +00:00
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#define free please_use_av_free
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2007-07-08 15:56:31 +00:00
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#undef realloc
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2006-07-16 16:32:48 +00:00
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#define realloc please_use_av_realloc
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2007-07-08 15:56:31 +00:00
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#undef time
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2006-07-16 16:32:48 +00:00
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#define time time_is_forbidden_due_to_security_issues
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2007-07-08 15:56:31 +00:00
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#undef rand
|
2009-03-21 16:16:04 +00:00
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#define rand rand_is_forbidden_due_to_state_trashing_use_av_lfg_get
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2007-07-08 15:56:31 +00:00
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#undef srand
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2009-03-21 16:16:04 +00:00
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#define srand srand_is_forbidden_due_to_state_trashing_use_av_lfg_init
|
2007-07-08 15:56:31 +00:00
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#undef random
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2009-03-21 16:16:04 +00:00
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#define random random_is_forbidden_due_to_state_trashing_use_av_lfg_get
|
2007-07-08 15:56:31 +00:00
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#undef sprintf
|
2006-07-16 16:32:48 +00:00
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#define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
|
2007-07-08 15:56:31 +00:00
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#undef strcat
|
2007-06-24 12:23:34 +00:00
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#define strcat strcat_is_forbidden_due_to_security_issues_use_av_strlcat
|
2007-07-08 15:56:31 +00:00
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#undef exit
|
2007-03-27 21:47:03 +00:00
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#define exit exit_is_forbidden
|
2008-09-06 07:26:05 +00:00
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#ifndef LIBAVFORMAT_BUILD
|
2007-07-08 15:56:31 +00:00
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#undef printf
|
2009-01-25 22:05:26 +00:00
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#define printf please_use_av_log_instead_of_printf
|
2007-07-08 15:56:31 +00:00
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#undef fprintf
|
2009-01-25 22:05:26 +00:00
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#define fprintf please_use_av_log_instead_of_fprintf
|
2008-01-17 08:32:31 +00:00
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#undef puts
|
2009-01-25 22:05:26 +00:00
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#define puts please_use_av_log_instead_of_puts
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2007-11-19 10:40:11 +00:00
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#undef perror
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#define perror please_use_av_log_instead_of_perror
|
2006-07-16 16:32:48 +00:00
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#endif
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2009-09-06 00:08:19 +00:00
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#define FF_ALLOC_OR_GOTO(ctx, p, size, label)\
|
2009-08-29 22:38:48 +00:00
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{\
|
2009-09-01 16:00:45 +00:00
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p = av_malloc(size);\
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|
if (p == NULL && (size) != 0) {\
|
2009-09-06 00:08:19 +00:00
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|
av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
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|
goto label;\
|
2009-08-29 22:38:48 +00:00
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}\
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}
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|
2009-09-06 00:08:19 +00:00
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#define FF_ALLOCZ_OR_GOTO(ctx, p, size, label)\
|
2006-07-16 16:32:48 +00:00
|
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{\
|
2009-09-01 16:00:45 +00:00
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p = av_mallocz(size);\
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|
if (p == NULL && (size) != 0) {\
|
2009-09-06 00:08:19 +00:00
|
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|
av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
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|
|
goto label;\
|
2006-07-16 16:32:48 +00:00
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|
}\
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|
}
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|
2010-01-12 02:19:51 +00:00
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|
#if !HAVE_EXP2
|
2010-01-16 01:27:46 +00:00
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|
#undef exp2
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|
#define exp2(x) exp((x) * 0.693147180559945)
|
2010-01-12 02:19:51 +00:00
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|
#endif /* HAVE_EXP2 */
|
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|
#if !HAVE_EXP2F
|
2010-01-16 01:27:46 +00:00
|
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|
#undef exp2f
|
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|
|
#define exp2f(x) exp2(x)
|
2010-01-12 02:19:51 +00:00
|
|
|
#endif /* HAVE_EXP2F */
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|
2009-01-13 23:44:16 +00:00
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|
#if !HAVE_LLRINT
|
2010-02-09 22:55:16 +00:00
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|
#undef llrint
|
|
|
|
#define llrint(x) rint(x)
|
2007-12-27 01:53:02 +00:00
|
|
|
#endif /* HAVE_LLRINT */
|
2009-07-10 19:20:06 +00:00
|
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|
|
#if !HAVE_LOG2
|
2010-01-16 01:27:46 +00:00
|
|
|
#undef log2
|
|
|
|
#define log2(x) (log(x) * 1.44269504088896340736)
|
2009-07-10 19:20:06 +00:00
|
|
|
#endif /* HAVE_LOG2 */
|
2010-01-12 02:19:51 +00:00
|
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|
|
#if !HAVE_LOG2F
|
2010-01-16 01:27:46 +00:00
|
|
|
#undef log2f
|
|
|
|
#define log2f(x) log2(x)
|
2010-01-12 02:19:51 +00:00
|
|
|
#endif /* HAVE_LOG2F */
|
2007-12-27 01:53:02 +00:00
|
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|
|
2009-01-13 23:44:16 +00:00
|
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|
#if !HAVE_LRINT
|
2008-03-19 06:17:43 +00:00
|
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|
static av_always_inline av_const long int lrint(double x)
|
2007-12-27 01:53:02 +00:00
|
|
|
{
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|
return rint(x);
|
|
|
|
}
|
|
|
|
#endif /* HAVE_LRINT */
|
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|
2009-01-13 23:44:16 +00:00
|
|
|
#if !HAVE_LRINTF
|
2008-03-19 06:17:43 +00:00
|
|
|
static av_always_inline av_const long int lrintf(float x)
|
2006-07-16 16:32:48 +00:00
|
|
|
{
|
|
|
|
return (int)(rint(x));
|
|
|
|
}
|
|
|
|
#endif /* HAVE_LRINTF */
|
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|
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|
2009-01-13 23:44:16 +00:00
|
|
|
#if !HAVE_ROUND
|
2008-03-19 06:17:43 +00:00
|
|
|
static av_always_inline av_const double round(double x)
|
2007-12-27 01:53:02 +00:00
|
|
|
{
|
|
|
|
return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
|
|
|
|
}
|
|
|
|
#endif /* HAVE_ROUND */
|
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|
2009-01-13 23:44:16 +00:00
|
|
|
#if !HAVE_ROUNDF
|
2008-03-19 06:17:43 +00:00
|
|
|
static av_always_inline av_const float roundf(float x)
|
2007-12-27 01:53:02 +00:00
|
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{
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|
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return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
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}
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|
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#endif /* HAVE_ROUNDF */
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2009-01-13 23:44:16 +00:00
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#if !HAVE_TRUNCF
|
2009-01-11 22:10:04 +00:00
|
|
|
static av_always_inline av_const float truncf(float x)
|
|
|
|
{
|
|
|
|
return (x > 0) ? floor(x) : ceil(x);
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|
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}
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|
#endif /* HAVE_TRUNCF */
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|
2009-01-15 23:01:26 +00:00
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|
|
/**
|
2009-01-28 23:03:17 +00:00
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|
|
* Returns NULL if CONFIG_SMALL is true, otherwise the argument
|
|
|
|
* without modification. Used to disable the definition of strings
|
2009-01-15 23:01:26 +00:00
|
|
|
* (for example AVCodec long_names).
|
|
|
|
*/
|
|
|
|
#if CONFIG_SMALL
|
|
|
|
# define NULL_IF_CONFIG_SMALL(x) NULL
|
|
|
|
#else
|
|
|
|
# define NULL_IF_CONFIG_SMALL(x) x
|
|
|
|
#endif
|
|
|
|
|
2008-08-31 07:39:47 +00:00
|
|
|
#endif /* AVUTIL_INTERNAL_H */
|