/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * 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.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file libavutil/internal.h
+ * @file
* common internal API header
*/
#include <stddef.h>
#include <assert.h>
#include "config.h"
-#include "common.h"
-#include "mem.h"
-#include "timer.h"
+#include "attributes.h"
+#include "dict.h"
+#include "macros.h"
+#include "pixfmt.h"
-#ifndef attribute_align_arg
-#if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,2)
-# define attribute_align_arg __attribute__((force_align_arg_pointer))
-#else
-# define attribute_align_arg
-#endif
+#if ARCH_X86
+# include "x86/emms.h"
#endif
-#ifndef attribute_used
-#if AV_GCC_VERSION_AT_LEAST(3,1)
-# define attribute_used __attribute__((used))
-#else
-# define attribute_used
-#endif
+#ifndef emms_c
+# define emms_c()
#endif
-#ifndef av_alias
-#if HAVE_ATTRIBUTE_MAY_ALIAS && (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(3,3)
-# define av_alias __attribute__((may_alias))
+#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 av_alias
-#endif
-#endif
-
-#ifndef INT16_MIN
-#define INT16_MIN (-0x7fff - 1)
-#endif
-
-#ifndef INT16_MAX
-#define INT16_MAX 0x7fff
-#endif
-
-#ifndef INT32_MIN
-#define INT32_MIN (-0x7fffffff - 1)
-#endif
-
-#ifndef INT32_MAX
-#define INT32_MAX 0x7fffffff
-#endif
-
-#ifndef UINT32_MAX
-#define UINT32_MAX 0xffffffff
-#endif
-
-#ifndef INT64_MIN
-#define INT64_MIN (-0x7fffffffffffffffLL - 1)
-#endif
-
-#ifndef INT64_MAX
-#define INT64_MAX INT64_C(9223372036854775807)
-#endif
-
-#ifndef UINT64_MAX
-#define UINT64_MAX UINT64_C(0xFFFFFFFFFFFFFFFF)
-#endif
-
-#ifndef INT_BIT
-# define INT_BIT (CHAR_BIT * sizeof(int))
+# define attribute_align_arg
#endif
-
-#ifndef offsetof
-# define offsetof(T, F) ((unsigned int)((char *)&((T *)0)->F))
#endif
-/* Use to export labels from asm. */
-#define LABEL_MANGLE(a) EXTERN_PREFIX #a
-
-// Use rip-relative addressing if compiling PIC code on x86-64.
-#if ARCH_X86_64 && defined(PIC)
-# define LOCAL_MANGLE(a) #a "(%%rip)"
+#if defined(_MSC_VER) && CONFIG_SHARED
+# define av_export __declspec(dllimport)
#else
-# define LOCAL_MANGLE(a) #a
-#endif
-
-#define MANGLE(a) EXTERN_PREFIX LOCAL_MANGLE(a)
-
-/* debug stuff */
-
-/* dprintf macros */
-#ifdef DEBUG
-# define dprintf(pctx, ...) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__)
+# 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 dprintf(pctx, ...)
+# define FF_DISABLE_DEPRECATION_WARNINGS
+# define FF_ENABLE_DEPRECATION_WARNINGS
#endif
-#define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0)
+// Some broken preprocessors need a second expansion
+// to be forced to tokenize __VA_ARGS__
+#define E1(x) x
-/* math */
-
-extern const uint8_t ff_sqrt_tab[256];
+/* 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]; \
+ }
-static inline av_const unsigned int ff_sqrt(unsigned int a)
-{
- unsigned int b;
+#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)
- if (a < 255) return (ff_sqrt_tab[a + 1] - 1) >> 4;
- else if (a < (1 << 12)) b = ff_sqrt_tab[a >> 4] >> 2;
-#if !CONFIG_SMALL
- else if (a < (1 << 14)) b = ff_sqrt_tab[a >> 6] >> 1;
- else if (a < (1 << 16)) b = ff_sqrt_tab[a >> 8] ;
-#endif
- else {
- int s = av_log2_16bit(a >> 16) >> 1;
- unsigned int c = a >> (s + 2);
- b = ff_sqrt_tab[c >> (s + 8)];
- b = FASTDIV(c,b) + (b << s);
- }
+#define LOCAL_ALIGNED_D(a, t, v, s, o, ...) \
+ DECLARE_ALIGNED(a, t, la_##v) s o; \
+ t (*v) o = la_##v
- return b - (a < b * b);
-}
+#define LOCAL_ALIGNED(a, t, v, ...) E1(LOCAL_ALIGNED_A(a, t, v, __VA_ARGS__,,))
-#if ARCH_X86
-#define MASK_ABS(mask, level)\
- __asm__ volatile(\
- "cltd \n\t"\
- "xorl %1, %0 \n\t"\
- "subl %1, %0 \n\t"\
- : "+a" (level), "=&d" (mask)\
- );
+#if HAVE_LOCAL_ALIGNED_8
+# define LOCAL_ALIGNED_8(t, v, ...) E1(LOCAL_ALIGNED_D(8, t, v, __VA_ARGS__,,))
#else
-#define MASK_ABS(mask, level)\
- mask = level >> 31;\
- level = (level ^ mask) - mask;
+# define LOCAL_ALIGNED_8(t, v, ...) LOCAL_ALIGNED(8, t, v, __VA_ARGS__)
#endif
-/* avoid usage of dangerous/inappropriate system functions */
-#undef malloc
-#define malloc please_use_av_malloc
-#undef free
-#define free please_use_av_free
-#undef realloc
-#define realloc please_use_av_realloc
-#undef time
-#define time time_is_forbidden_due_to_security_issues
-#undef rand
-#define rand rand_is_forbidden_due_to_state_trashing_use_av_lfg_get
-#undef srand
-#define srand srand_is_forbidden_due_to_state_trashing_use_av_lfg_init
-#undef random
-#define random random_is_forbidden_due_to_state_trashing_use_av_lfg_get
-#undef sprintf
-#define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
-#undef strcat
-#define strcat strcat_is_forbidden_due_to_security_issues_use_av_strlcat
-#undef exit
-#define exit exit_is_forbidden
-#ifndef LIBAVFORMAT_BUILD
-#undef printf
-#define printf please_use_av_log_instead_of_printf
-#undef fprintf
-#define fprintf please_use_av_log_instead_of_fprintf
-#undef puts
-#define puts please_use_av_log_instead_of_puts
-#undef perror
-#define perror please_use_av_log_instead_of_perror
+#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, ...) LOCAL_ALIGNED(16, t, v, __VA_ARGS__)
#endif
#define FF_ALLOC_OR_GOTO(ctx, p, size, label)\
{\
p = av_malloc(size);\
- if (p == NULL && (size) != 0) {\
+ 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 == NULL && (size) != 0) {\
+ if (!(p) && (size) != 0) {\
av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
goto label;\
}\
}
-#if !HAVE_EXP2
-#undef exp2
-#define exp2(x) exp((x) * 0.693147180559945)
-#endif /* HAVE_EXP2 */
-
-#if !HAVE_EXP2F
-#undef exp2f
-#define exp2f(x) ((float)exp2(x))
-#endif /* HAVE_EXP2F */
+#include "libm.h"
-#if !HAVE_LLRINT
-#undef llrint
-#define llrint(x) ((long long)rint(x))
-#endif /* HAVE_LLRINT */
+/**
+ * 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
-#if !HAVE_LOG2
-#undef log2
-#define log2(x) (log(x) * 1.44269504088896340736)
-#endif /* HAVE_LOG2 */
-#if !HAVE_LOG2F
-#undef log2f
-#define log2f(x) ((float)log2(x))
-#endif /* HAVE_LOG2F */
+/**
+ * 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
-#if !HAVE_LRINT
-static av_always_inline av_const long int lrint(double x)
-{
- return rint(x);
-}
-#endif /* HAVE_LRINT */
+/**
+ * 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_LRINTF
-static av_always_inline av_const long int lrintf(float x)
-{
- return (int)(rint(x));
-}
-#endif /* HAVE_LRINTF */
+/**
+ * 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);
-#if !HAVE_ROUND
-static av_always_inline av_const double round(double x)
-{
- return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
-}
-#endif /* HAVE_ROUND */
+/**
+ * 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_ROUNDF
-static av_always_inline av_const float roundf(float x)
-{
- return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
-}
-#endif /* HAVE_ROUNDF */
+#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
-#if !HAVE_TRUNCF
-static av_always_inline av_const float truncf(float x)
-{
- return (x > 0) ? floor(x) : ceil(x);
-}
-#endif /* HAVE_TRUNCF */
+#define avpriv_open ff_open
+#endif
/**
- * Returns NULL if CONFIG_SMALL is true, otherwise the argument
- * without modification. Used to disable the definition of strings
- * (for example AVCodec long_names).
+ * A wrapper for open() setting O_CLOEXEC.
*/
-#if CONFIG_SMALL
-# define NULL_IF_CONFIG_SMALL(x) NULL
-#else
-# define NULL_IF_CONFIG_SMALL(x) x
-#endif
+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 */
projects / ffmpeg / blobdiff