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50078c1c80
Include macros.h explicitly in common.h so that external code using FFALIGN does not break. It was already implicitly included through version.h. Include macros.h in lls.h and internal.h for FFALIGN. lls.h was including common.h only for FFALIGN and internal.h was missing the include for FFALIGN. `make checkheaders` did not catch it because it's an internal header.
224 lines
6.8 KiB
C
224 lines
6.8 KiB
C
/*
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* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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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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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav 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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* 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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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* common internal API header
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*/
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#ifndef AVUTIL_INTERNAL_H
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#define AVUTIL_INTERNAL_H
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#if !defined(DEBUG) && !defined(NDEBUG)
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# define NDEBUG
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#endif
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#include <limits.h>
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#include <stdint.h>
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#include <stddef.h>
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#include <assert.h>
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#include "config.h"
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#include "attributes.h"
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#include "dict.h"
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#include "macros.h"
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#include "pixfmt.h"
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#if ARCH_X86
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# include "x86/emms.h"
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#endif
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#ifndef emms_c
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# define emms_c()
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#endif
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#ifndef attribute_align_arg
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#if ARCH_X86_32 && AV_GCC_VERSION_AT_LEAST(4,2)
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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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#if defined(_MSC_VER) && CONFIG_SHARED
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# define av_export __declspec(dllimport)
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#else
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# define av_export
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#endif
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#if HAVE_PRAGMA_DEPRECATED
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# if defined(__ICL)
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# define FF_DISABLE_DEPRECATION_WARNINGS __pragma(warning(push)) __pragma(warning(disable:1478))
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# define FF_ENABLE_DEPRECATION_WARNINGS __pragma(warning(pop))
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# elif defined(_MSC_VER)
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# define FF_DISABLE_DEPRECATION_WARNINGS __pragma(warning(push)) __pragma(warning(disable:4996))
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# define FF_ENABLE_DEPRECATION_WARNINGS __pragma(warning(pop))
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# else
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# define FF_DISABLE_DEPRECATION_WARNINGS _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
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# define FF_ENABLE_DEPRECATION_WARNINGS _Pragma("GCC diagnostic warning \"-Wdeprecated-declarations\"")
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# endif
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#else
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# define FF_DISABLE_DEPRECATION_WARNINGS
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# define FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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// Some broken preprocessors need a second expansion
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// to be forced to tokenize __VA_ARGS__
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#define E1(x) x
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/* Check if the hard coded offset of a struct member still matches reality.
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* Induce a compilation failure if not.
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*/
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#define AV_CHECK_OFFSET(s, m, o) struct check_##o { \
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int x_##o[offsetof(s, m) == o? 1: -1]; \
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}
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#define LOCAL_ALIGNED_A(a, t, v, s, o, ...) \
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uint8_t la_##v[sizeof(t s o) + (a)]; \
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t (*v) o = (void *)FFALIGN((uintptr_t)la_##v, a)
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#define LOCAL_ALIGNED_D(a, t, v, s, o, ...) \
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DECLARE_ALIGNED(a, t, la_##v) s o; \
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t (*v) o = la_##v
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#define LOCAL_ALIGNED(a, t, v, ...) E1(LOCAL_ALIGNED_A(a, t, v, __VA_ARGS__,,))
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#if HAVE_LOCAL_ALIGNED_8
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# define LOCAL_ALIGNED_8(t, v, ...) E1(LOCAL_ALIGNED_D(8, t, v, __VA_ARGS__,,))
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#else
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# define LOCAL_ALIGNED_8(t, v, ...) LOCAL_ALIGNED(8, t, v, __VA_ARGS__)
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#endif
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#if HAVE_LOCAL_ALIGNED_16
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# define LOCAL_ALIGNED_16(t, v, ...) E1(LOCAL_ALIGNED_D(16, t, v, __VA_ARGS__,,))
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#else
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# define LOCAL_ALIGNED_16(t, v, ...) LOCAL_ALIGNED(16, t, v, __VA_ARGS__)
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#endif
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#define FF_ALLOC_OR_GOTO(ctx, p, size, label)\
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{\
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p = av_malloc(size);\
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if (!(p) && (size) != 0) {\
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av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
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goto label;\
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}\
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}
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#define FF_ALLOCZ_OR_GOTO(ctx, p, size, label)\
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{\
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p = av_mallocz(size);\
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if (!(p) && (size) != 0) {\
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av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
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goto label;\
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}\
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}
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#include "libm.h"
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/**
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* Return NULL if CONFIG_SMALL is true, otherwise the argument
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* without modification. Used to disable the definition of strings
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* (for example AVCodec long_names).
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*/
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#if CONFIG_SMALL
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# define NULL_IF_CONFIG_SMALL(x) NULL
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#else
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# define NULL_IF_CONFIG_SMALL(x) x
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#endif
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/**
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* Define a function with only the non-default version specified.
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*
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* On systems with ELF shared libraries, all symbols exported from
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* Libav libraries are tagged with the name and major version of the
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* library to which they belong. If a function is moved from one
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* library to another, a wrapper must be retained in the original
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* location to preserve binary compatibility.
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*
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* Functions defined with this macro will never be used to resolve
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* symbols by the build-time linker.
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*
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* @param type return type of function
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* @param name name of function
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* @param args argument list of function
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* @param ver version tag to assign function
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*/
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#if HAVE_SYMVER_ASM_LABEL
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# define FF_SYMVER(type, name, args, ver) \
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type ff_##name args __asm__ (EXTERN_PREFIX #name "@" ver); \
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type ff_##name args
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#elif HAVE_SYMVER_GNU_ASM
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# define FF_SYMVER(type, name, args, ver) \
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__asm__ (".symver ff_" #name "," EXTERN_PREFIX #name "@" ver); \
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type ff_##name args; \
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type ff_##name args
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#endif
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/**
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* Return NULL if a threading library has not been enabled.
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* Used to disable threading functions in AVCodec definitions
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* when not needed.
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*/
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#if HAVE_THREADS
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# define ONLY_IF_THREADS_ENABLED(x) x
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#else
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# define ONLY_IF_THREADS_ENABLED(x) NULL
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#endif
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/**
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* Log a generic warning message about a missing feature.
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*
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* @param[in] avc a pointer to an arbitrary struct of which the first
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* field is a pointer to an AVClass struct
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* @param[in] msg string containing the name of the missing feature
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*/
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void avpriv_report_missing_feature(void *avc,
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const char *msg, ...) av_printf_format(2, 3);
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/**
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* Log a generic warning message about a missing feature.
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* Additionally request that a sample showcasing the feature be uploaded.
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*
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* @param[in] avc a pointer to an arbitrary struct of which the first field is
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* a pointer to an AVClass struct
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* @param[in] msg string containing the name of the missing feature
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*/
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void avpriv_request_sample(void *avc,
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const char *msg, ...) av_printf_format(2, 3);
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#if HAVE_LIBC_MSVCRT
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#include <crtversion.h>
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#if defined(_VC_CRT_MAJOR_VERSION) && _VC_CRT_MAJOR_VERSION < 14
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#pragma comment(linker, "/include:"EXTERN_PREFIX"avpriv_strtod")
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#pragma comment(linker, "/include:"EXTERN_PREFIX"avpriv_snprintf")
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#endif
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#define avpriv_open ff_open
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#endif
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/**
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* A wrapper for open() setting O_CLOEXEC.
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*/
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int avpriv_open(const char *filename, int flags, ...);
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int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt);
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#endif /* AVUTIL_INTERNAL_H */
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