mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-02 03:06:28 +02:00
99efd59626
* commit 'cb45553f577f8e0ebfe05d3287e1b6fa5859b967': Remove pointless #undefs of previously forbidden functions. fate: Add dependencies for bmp, cdxl, dfa, mp3 Conflicts: doc/examples/muxing.c libavfilter/filtfmts.c libavutil/des.c libavutil/eval.c libavutil/log.c libavutil/parseutils.c tests/fate/mp3.mak Merged-by: Michael Niedermayer <michaelni@gmx.at>
150 lines
4.1 KiB
C
150 lines
4.1 KiB
C
/*
|
|
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* common internal API header
|
|
*/
|
|
|
|
#ifndef AVUTIL_INTERNAL_H
|
|
#define AVUTIL_INTERNAL_H
|
|
|
|
#if !defined(DEBUG) && !defined(NDEBUG)
|
|
# define NDEBUG
|
|
#endif
|
|
|
|
#include <limits.h>
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
#include <assert.h>
|
|
#include "config.h"
|
|
#include "attributes.h"
|
|
#include "timer.h"
|
|
#include "cpu.h"
|
|
#include "dict.h"
|
|
|
|
#ifndef attribute_align_arg
|
|
#if ARCH_X86_32 && AV_GCC_VERSION_AT_LEAST(4,2)
|
|
# define attribute_align_arg __attribute__((force_align_arg_pointer))
|
|
#else
|
|
# define attribute_align_arg
|
|
#endif
|
|
#endif
|
|
|
|
#if defined(_MSC_VER) && CONFIG_SHARED
|
|
# define av_export __declspec(dllimport)
|
|
#else
|
|
# define av_export
|
|
#endif
|
|
|
|
#ifndef INT_BIT
|
|
# define INT_BIT (CHAR_BIT * sizeof(int))
|
|
#endif
|
|
|
|
#define FF_ALLOC_OR_GOTO(ctx, p, size, label)\
|
|
{\
|
|
p = av_malloc(size);\
|
|
if (p == NULL && (size) != 0) {\
|
|
av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
|
|
goto label;\
|
|
}\
|
|
}
|
|
|
|
#define FF_ALLOCZ_OR_GOTO(ctx, p, size, label)\
|
|
{\
|
|
p = av_mallocz(size);\
|
|
if (p == NULL && (size) != 0) {\
|
|
av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
|
|
goto label;\
|
|
}\
|
|
}
|
|
|
|
#include "libm.h"
|
|
|
|
/**
|
|
* Return NULL if CONFIG_SMALL is true, otherwise the argument
|
|
* without modification. Used to disable the definition of strings
|
|
* (for example AVCodec long_names).
|
|
*/
|
|
#if CONFIG_SMALL
|
|
# define NULL_IF_CONFIG_SMALL(x) NULL
|
|
#else
|
|
# define NULL_IF_CONFIG_SMALL(x) x
|
|
#endif
|
|
|
|
/**
|
|
* Define a function with only the non-default version specified.
|
|
*
|
|
* On systems with ELF shared libraries, all symbols exported from
|
|
* FFmpeg libraries are tagged with the name and major version of the
|
|
* library to which they belong. If a function is moved from one
|
|
* library to another, a wrapper must be retained in the original
|
|
* location to preserve binary compatibility.
|
|
*
|
|
* Functions defined with this macro will never be used to resolve
|
|
* symbols by the build-time linker.
|
|
*
|
|
* @param type return type of function
|
|
* @param name name of function
|
|
* @param args argument list of function
|
|
* @param ver version tag to assign function
|
|
*/
|
|
#if HAVE_SYMVER_ASM_LABEL
|
|
# define FF_SYMVER(type, name, args, ver) \
|
|
type ff_##name args __asm__ (EXTERN_PREFIX #name "@" ver); \
|
|
type ff_##name args
|
|
#elif HAVE_SYMVER_GNU_ASM
|
|
# define FF_SYMVER(type, name, args, ver) \
|
|
__asm__ (".symver ff_" #name "," EXTERN_PREFIX #name "@" ver); \
|
|
type ff_##name args; \
|
|
type ff_##name args
|
|
#endif
|
|
|
|
/**
|
|
* Return NULL if a threading library has not been enabled.
|
|
* Used to disable threading functions in AVCodec definitions
|
|
* when not needed.
|
|
*/
|
|
#if HAVE_THREADS
|
|
# define ONLY_IF_THREADS_ENABLED(x) x
|
|
#else
|
|
# define ONLY_IF_THREADS_ENABLED(x) NULL
|
|
#endif
|
|
|
|
#if HAVE_MMX_INLINE
|
|
/**
|
|
* Empty mmx state.
|
|
* this must be called between any dsp function and float/double code.
|
|
* for example sin(); dsp->idct_put(); emms_c(); cos()
|
|
*/
|
|
static av_always_inline void emms_c(void)
|
|
{
|
|
if(av_get_cpu_flags() & AV_CPU_FLAG_MMX)
|
|
__asm__ volatile ("emms" ::: "memory");
|
|
}
|
|
#elif HAVE_MMX && HAVE_MM_EMPTY
|
|
# include <mmintrin.h>
|
|
# define emms_c _mm_empty
|
|
#else
|
|
# define emms_c()
|
|
#endif /* HAVE_MMX_INLINE */
|
|
|
|
#endif /* AVUTIL_INTERNAL_H */
|