mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
230 lines
7.0 KiB
230 lines
7.0 KiB
/* |
|
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> |
|
* |
|
* This file is part of Libav. |
|
* |
|
* Libav 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. |
|
* |
|
* Libav 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 Libav; 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 "dict.h" |
|
#include "macros.h" |
|
#include "mem.h" |
|
#include "pixfmt.h" |
|
|
|
#if ARCH_X86 |
|
# include "x86/emms.h" |
|
#endif |
|
|
|
#ifndef emms_c |
|
# define emms_c() |
|
#endif |
|
|
|
#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 |
|
|
|
#if HAVE_PRAGMA_DEPRECATED |
|
# if defined(__ICL) |
|
# define FF_DISABLE_DEPRECATION_WARNINGS __pragma(warning(push)) __pragma(warning(disable:1478)) |
|
# define FF_ENABLE_DEPRECATION_WARNINGS __pragma(warning(pop)) |
|
# elif defined(_MSC_VER) |
|
# define FF_DISABLE_DEPRECATION_WARNINGS __pragma(warning(push)) __pragma(warning(disable:4996)) |
|
# define FF_ENABLE_DEPRECATION_WARNINGS __pragma(warning(pop)) |
|
# else |
|
# define FF_DISABLE_DEPRECATION_WARNINGS _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") |
|
# define FF_ENABLE_DEPRECATION_WARNINGS _Pragma("GCC diagnostic warning \"-Wdeprecated-declarations\"") |
|
# endif |
|
#else |
|
# define FF_DISABLE_DEPRECATION_WARNINGS |
|
# define FF_ENABLE_DEPRECATION_WARNINGS |
|
#endif |
|
|
|
// Some broken preprocessors need a second expansion |
|
// to be forced to tokenize __VA_ARGS__ |
|
#define E1(x) x |
|
|
|
/* Check if the hard coded offset of a struct member still matches reality. |
|
* Induce a compilation failure if not. |
|
*/ |
|
#define AV_CHECK_OFFSET(s, m, o) struct check_##o { \ |
|
int x_##o[offsetof(s, m) == o? 1: -1]; \ |
|
} |
|
|
|
#define LOCAL_ALIGNED_A(a, t, v, s, o, ...) \ |
|
uint8_t la_##v[sizeof(t s o) + (a)]; \ |
|
t (*v) o = (void *)FFALIGN((uintptr_t)la_##v, a) |
|
|
|
#define LOCAL_ALIGNED_D(a, t, v, s, o, ...) \ |
|
DECLARE_ALIGNED(a, t, la_##v) s o; \ |
|
t (*v) o = la_##v |
|
|
|
#define LOCAL_ALIGNED(a, t, v, ...) LOCAL_ALIGNED_##a(t, v, __VA_ARGS__) |
|
|
|
#if HAVE_LOCAL_ALIGNED_8 |
|
# define LOCAL_ALIGNED_8(t, v, ...) E1(LOCAL_ALIGNED_D(8, t, v, __VA_ARGS__,,)) |
|
#else |
|
# define LOCAL_ALIGNED_8(t, v, ...) E1(LOCAL_ALIGNED_A(8, t, v, __VA_ARGS__,,)) |
|
#endif |
|
|
|
#if HAVE_LOCAL_ALIGNED_16 |
|
# define LOCAL_ALIGNED_16(t, v, ...) E1(LOCAL_ALIGNED_D(16, t, v, __VA_ARGS__,,)) |
|
#else |
|
# define LOCAL_ALIGNED_16(t, v, ...) E1(LOCAL_ALIGNED_A(16, t, v, __VA_ARGS__,,)) |
|
#endif |
|
|
|
#if HAVE_LOCAL_ALIGNED_32 |
|
# define LOCAL_ALIGNED_32(t, v, ...) E1(LOCAL_ALIGNED_D(32, t, v, __VA_ARGS__,,)) |
|
#else |
|
# define LOCAL_ALIGNED_32(t, v, ...) E1(LOCAL_ALIGNED_A(32, t, v, __VA_ARGS__,,)) |
|
#endif |
|
|
|
#define FF_ALLOC_OR_GOTO(ctx, p, size, label)\ |
|
{\ |
|
p = av_malloc(size);\ |
|
if (!(p) && (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) && (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 |
|
* Libav 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 |
|
|
|
/** |
|
* Log a generic warning message about a missing feature. |
|
* |
|
* @param[in] avc a pointer to an arbitrary struct of which the first |
|
* field is a pointer to an AVClass struct |
|
* @param[in] msg string containing the name of the missing feature |
|
*/ |
|
void avpriv_report_missing_feature(void *avc, |
|
const char *msg, ...) av_printf_format(2, 3); |
|
|
|
/** |
|
* Log a generic warning message about a missing feature. |
|
* Additionally request that a sample showcasing the feature be uploaded. |
|
* |
|
* @param[in] avc a pointer to an arbitrary struct of which the first field is |
|
* a pointer to an AVClass struct |
|
* @param[in] msg string containing the name of the missing feature |
|
*/ |
|
void avpriv_request_sample(void *avc, |
|
const char *msg, ...) av_printf_format(2, 3); |
|
|
|
#if HAVE_LIBC_MSVCRT |
|
#include <crtversion.h> |
|
#if defined(_VC_CRT_MAJOR_VERSION) && _VC_CRT_MAJOR_VERSION < 14 |
|
#pragma comment(linker, "/include:"EXTERN_PREFIX"avpriv_strtod") |
|
#pragma comment(linker, "/include:"EXTERN_PREFIX"avpriv_snprintf") |
|
#endif |
|
|
|
#define avpriv_open ff_open |
|
#endif |
|
|
|
/** |
|
* A wrapper for open() setting O_CLOEXEC. |
|
*/ |
|
int avpriv_open(const char *filename, int flags, ...); |
|
|
|
int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt); |
|
|
|
#endif /* AVUTIL_INTERNAL_H */
|
|
|