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222 lines
6.7 KiB
222 lines
6.7 KiB
/* |
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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 FFmpeg. |
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* |
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 "timer.h" |
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#include "cpu.h" |
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#include "dict.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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#ifndef INT_BIT |
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# define INT_BIT (CHAR_BIT * sizeof(int)) |
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#endif |
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#define FF_MEMORY_POISON 0x2a |
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#define MAKE_ACCESSORS(str, name, type, field) \ |
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type av_##name##_get_##field(const str *s) { return s->field; } \ |
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void av_##name##_set_##field(str *s, type v) { s->field = v; } |
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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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#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 == NULL && (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 == NULL && (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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#if defined(_MSC_VER) |
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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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/** |
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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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* FFmpeg 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_MSVCRT |
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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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#endif /* AVUTIL_INTERNAL_H */
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