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/*

 * copyright (c) 2006 Michael Niedermayer 

 *

 * 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

#include 

#include 

#include 

#include 

#include "config.h"

#include "attributes.h"

#include "timer.h"

#include "cpu.h"

#include "dict.h"

#include "version.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) || 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 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

#ifndef INT_BIT

#    define INT_BIT (CHAR_BIT * sizeof(int))

#endif

#define FF_MEMORY_POISON 0x2a

#define MAKE_ACCESSORS(str, name, type, field) \

    type av_##name##_get_##field(const str *s) { return s->field; } \

    void av_##name##_set_##field(str *s, type v) { s->field = v; }

// Some broken preprocessors need a second expansion

// to be forced to tokenize __VA_ARGS__

#define E1(x) x

#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, ...) E1(LOCAL_ALIGNED_A(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, ...) LOCAL_ALIGNED(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, ...) 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) {\

        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) {\

        av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\

        goto label;\

    }\

}

#include "libm.h"

#if defined(_MSC_VER)

#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

 * (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

 * FFmpeg 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_MSVCRT

#define avpriv_open ff_open

#endif

/**

 * A wrapper for open() setting O_CLOEXEC.

 */

int avpriv_open(const char *filename, int flags, ...);

#if FF_API_GET_CHANNEL_LAYOUT_COMPAT

uint64_t ff_get_channel_layout(const char *name, int compat);

#endif

#endif /* AVUTIL_INTERNAL_H */