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Diffstat (limited to '')
| -rw-r--r-- | media/ffvpx/libavutil/internal.h | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/media/ffvpx/libavutil/internal.h b/media/ffvpx/libavutil/internal.h new file mode 100644 index 0000000000..454c59aa50 --- /dev/null +++ b/media/ffvpx/libavutil/internal.h @@ -0,0 +1,190 @@ +/* + * 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 + +// This can be enabled to allow detection of additional integer overflows with ubsan +//#define CHECKED + +#include <limits.h> +#include <stdint.h> +#include <stddef.h> +#include <assert.h> +#include <stdio.h> +#include "config.h" +#include "attributes.h" +#include "timer.h" +#include "macros.h" +#include "pixfmt.h" + +#if ARCH_X86 +# include "x86/emms.h" +#endif + +#ifndef emms_c +# define emms_c() do {} while(0) +#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(_WIN32) && CONFIG_SHARED && !defined(BUILDING_avutil) +# define av_export_avutil __declspec(dllimport) +#else +# define av_export_avutil +#endif + +#if HAVE_PRAGMA_DEPRECATED +# if defined(__ICL) || defined (__INTEL_COMPILER) +# 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 push") _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") +# define FF_ENABLE_DEPRECATION_WARNINGS _Pragma("GCC diagnostic pop") +# endif +#else +# define FF_DISABLE_DEPRECATION_WARNINGS +# define FF_ENABLE_DEPRECATION_WARNINGS +#endif + + +#define FF_MEMORY_POISON 0x2a + +/* 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 FF_ALLOC_TYPED_ARRAY(p, nelem) (p = av_malloc_array(nelem, sizeof(*p))) +#define FF_ALLOCZ_TYPED_ARRAY(p, nelem) (p = av_calloc(nelem, sizeof(*p))) + +#define FF_PTR_ADD(ptr, off) ((off) ? (ptr) + (off) : (ptr)) + +/** + * Access a field in a structure by its offset. + */ +#define FF_FIELD_AT(type, off, obj) (*(type *)((char *)&(obj) + (off))) + +#include "libm.h" + +/** + * Return NULL if CONFIG_SMALL is true, otherwise the argument + * without modification. Used to disable the definition of strings. + */ +#if CONFIG_SMALL +# define NULL_IF_CONFIG_SMALL(x) NULL +#else +# define NULL_IF_CONFIG_SMALL(x) x +#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 PTRDIFF_SPECIFIER "Id" +#define SIZE_SPECIFIER "Iu" +#else +#define PTRDIFF_SPECIFIER "td" +#define SIZE_SPECIFIER "zu" +#endif + +#ifdef DEBUG +# define ff_dlog(ctx, ...) av_log(ctx, AV_LOG_DEBUG, __VA_ARGS__) +#else +# define ff_dlog(ctx, ...) do { if (0) av_log(ctx, AV_LOG_DEBUG, __VA_ARGS__); } while (0) +#endif + +#ifdef TRACE +# define ff_tlog(ctx, ...) av_log(ctx, AV_LOG_TRACE, __VA_ARGS__) +#else +# define ff_tlog(ctx, ...) do { } while(0) +#endif + +// For debuging we use signed operations so overflows can be detected (by ubsan) +// For production we use unsigned so there are no undefined operations +#ifdef CHECKED +#define SUINT int +#define SUINT32 int32_t +#else +#define SUINT unsigned +#define SUINT32 uint32_t +#endif + +int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt); + +static av_always_inline av_const int avpriv_mirror(int x, int w) +{ + if (!w) + return 0; + + while ((unsigned)x > (unsigned)w) { + x = -x; + if (x < 0) + x += 2 * w; + } + return x; +} + +#endif /* AVUTIL_INTERNAL_H */ |