/*
* 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
*/
#include "config.h"
#include "attributes.h"
#include "timer.h"
+#include "dict.h"
-#ifndef attribute_align_arg
-#if ARCH_X86_32 && (!defined(__ICC) || __ICC > 1200) && AV_GCC_VERSION_AT_LEAST(4,2)
-# define attribute_align_arg __attribute__((force_align_arg_pointer))
-#else
-# define attribute_align_arg
-#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
+#if ARCH_X86
+# include "x86/emms.h"
#endif
-#ifndef UINT32_MAX
-#define UINT32_MAX 0xffffffff
+#ifndef emms_c
+# define emms_c()
#endif
-#ifndef INT64_MIN
-#define INT64_MIN (-0x7fffffffffffffffLL - 1)
+#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
-
-#ifndef INT64_MAX
-#define INT64_MAX INT64_C(9223372036854775807)
#endif
-#ifndef UINT64_MAX
-#define UINT64_MAX UINT64_C(0xFFFFFFFFFFFFFFFF)
+#if defined(_MSC_VER) && CONFIG_SHARED
+# define av_export __declspec(dllimport)
+#else
+# define av_export
#endif
#ifndef INT_BIT
# define INT_BIT (CHAR_BIT * sizeof(int))
#endif
-#ifndef offsetof
-# define offsetof(T, F) ((unsigned int)((char *)&((T *)0)->F))
-#endif
+// Some broken preprocessors need a second expansion
+// to be forced to tokenize __VA_ARGS__
+#define E1(x) x
-/* Use to export labels from asm. */
-#define LABEL_MANGLE(a) EXTERN_PREFIX #a
+#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)
-// Use rip-relative addressing if compiling PIC code on x86-64.
-#if ARCH_X86_64 && defined(PIC)
-# define LOCAL_MANGLE(a) #a "(%%rip)"
-#else
-# define LOCAL_MANGLE(a) #a
-#endif
-
-#define MANGLE(a) EXTERN_PREFIX LOCAL_MANGLE(a)
-
-/* debug stuff */
+#define LOCAL_ALIGNED_D(a, t, v, s, o, ...) \
+ DECLARE_ALIGNED(a, t, la_##v) s o; \
+ t (*v) o = la_##v
-#define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0)
+#define LOCAL_ALIGNED(a, t, v, ...) E1(LOCAL_ALIGNED_A(a, t, v, __VA_ARGS__,,))
-/* math */
-
-#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)\
#include "libm.h"
+#if defined(_MSC_VER) && !CONFIG_SHARED
+#pragma comment(linker, "/include:"EXTERN_PREFIX"avpriv_strtod")
+#pragma comment(linker, "/include:"EXTERN_PREFIX"avpriv_snprintf")
+#endif
+
/**
* Return NULL if CONFIG_SMALL is true, otherwise the argument
* without modification. Used to disable the definition of strings
* Define a function with only the non-default version specified.
*
* On systems with ELF shared libraries, all symbols exported from
- * FFmpeg libraries are tagged with the name and major version of the
+ * 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.
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);
+
#endif /* AVUTIL_INTERNAL_H */
projects / ffmpeg / blobdiff