mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-29 10:52:20 +00:00
40c5fa2689
with minor changes from me Originally committed as revision 4019 to svn://svn.ffmpeg.org/ffmpeg/trunk
521 lines
11 KiB
C
521 lines
11 KiB
C
/**
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* @file common.h
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* common internal api header.
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*/
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#ifndef COMMON_H
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#define COMMON_H
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#if defined(WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__)
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# define CONFIG_WIN32
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#endif
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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#ifdef HAVE_AV_CONFIG_H
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/* only include the following when compiling package */
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# include "config.h"
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# include <stdlib.h>
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# include <stdio.h>
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# include <string.h>
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# include <ctype.h>
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# include <limits.h>
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# ifndef __BEOS__
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# include <errno.h>
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# else
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# include "berrno.h"
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# endif
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# include <math.h>
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# ifndef ENODATA
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# define ENODATA 61
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# endif
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#include <stddef.h>
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#ifndef offsetof
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# define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F))
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#endif
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#define AVOPTION_CODEC_BOOL(name, help, field) \
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{ name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_BOOL }
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#define AVOPTION_CODEC_DOUBLE(name, help, field, minv, maxv, defval) \
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{ name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_DOUBLE, minv, maxv, defval }
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#define AVOPTION_CODEC_FLAG(name, help, field, flag, defval) \
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{ name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_FLAG, flag, 0, defval }
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#define AVOPTION_CODEC_INT(name, help, field, minv, maxv, defval) \
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{ name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_INT, minv, maxv, defval }
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#define AVOPTION_CODEC_STRING(name, help, field, str, val) \
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{ name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_STRING, .defval = val, .defstr = str }
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#define AVOPTION_CODEC_RCOVERRIDE(name, help, field) \
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{ name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_RCOVERRIDE, .defval = 0, .defstr = NULL }
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#define AVOPTION_SUB(ptr) { .name = NULL, .help = (const char*)ptr }
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#define AVOPTION_END() AVOPTION_SUB(NULL)
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#endif /* HAVE_AV_CONFIG_H */
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/* Suppress restrict if it was not defined in config.h. */
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#ifndef restrict
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# define restrict
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#endif
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#ifndef always_inline
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#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
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# define always_inline __attribute__((always_inline)) inline
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#else
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# define always_inline inline
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#endif
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#endif
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#ifndef attribute_used
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#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
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# define attribute_used __attribute__((used))
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#else
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# define attribute_used
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#endif
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#endif
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#ifndef attribute_unused
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#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
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# define attribute_unused __attribute__((unused))
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#else
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# define attribute_unused
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#endif
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#endif
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#ifndef EMULATE_INTTYPES
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# include <inttypes.h>
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#else
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typedef signed char int8_t;
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typedef signed short int16_t;
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typedef signed int int32_t;
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typedef unsigned char uint8_t;
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typedef unsigned short uint16_t;
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typedef unsigned int uint32_t;
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# ifdef CONFIG_WIN32
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typedef signed __int64 int64_t;
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typedef unsigned __int64 uint64_t;
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# else /* other OS */
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typedef signed long long int64_t;
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typedef unsigned long long uint64_t;
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# endif /* other OS */
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#endif /* HAVE_INTTYPES_H */
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#ifndef INT16_MIN
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#define INT16_MIN (-0x7fff-1)
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#endif
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#ifndef INT16_MAX
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#define INT16_MAX 0x7fff
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#endif
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#ifndef INT64_MIN
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#define INT64_MIN (-0x7fffffffffffffffLL-1)
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#endif
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#ifndef INT64_MAX
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#define INT64_MAX int64_t_C(9223372036854775807)
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#endif
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#ifndef UINT64_MAX
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#define UINT64_MAX uint64_t_C(0xFFFFFFFFFFFFFFFF)
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#endif
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#ifdef EMULATE_FAST_INT
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/* note that we don't emulate 64bit ints */
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typedef signed char int_fast8_t;
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typedef signed int int_fast16_t;
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typedef signed int int_fast32_t;
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typedef unsigned char uint_fast8_t;
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typedef unsigned int uint_fast16_t;
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typedef unsigned int uint_fast32_t;
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#endif
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#ifndef INT_BIT
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# if INT_MAX != 2147483647
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# define INT_BIT 64
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# else
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# define INT_BIT 32
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# endif
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#endif
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#if defined(CONFIG_OS2) || defined(CONFIG_SUNOS)
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static inline float floorf(float f) {
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return floor(f);
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}
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#endif
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#ifdef CONFIG_WIN32
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/* windows */
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# if !defined(__MINGW32__) && !defined(__CYGWIN__)
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# define int64_t_C(c) (c ## i64)
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# define uint64_t_C(c) (c ## i64)
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# ifdef HAVE_AV_CONFIG_H
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# define inline __inline
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# endif
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# else
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# define int64_t_C(c) (c ## LL)
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# define uint64_t_C(c) (c ## ULL)
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# endif /* __MINGW32__ */
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# ifdef HAVE_AV_CONFIG_H
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# ifdef _DEBUG
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# define DEBUG
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# endif
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# define snprintf _snprintf
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# define vsnprintf _vsnprintf
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# endif
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/* CONFIG_WIN32 end */
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#elif defined (CONFIG_OS2)
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/* OS/2 EMX */
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#ifndef int64_t_C
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#define int64_t_C(c) (c ## LL)
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#define uint64_t_C(c) (c ## ULL)
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#endif
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#ifdef HAVE_AV_CONFIG_H
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#ifdef USE_FASTMEMCPY
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#include "fastmemcpy.h"
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#endif
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#include <float.h>
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#endif /* HAVE_AV_CONFIG_H */
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/* CONFIG_OS2 end */
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#else
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/* unix */
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#ifndef int64_t_C
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#define int64_t_C(c) (c ## LL)
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#define uint64_t_C(c) (c ## ULL)
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#endif
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#ifdef HAVE_AV_CONFIG_H
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# ifdef USE_FASTMEMCPY
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# include "fastmemcpy.h"
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# endif
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# endif /* HAVE_AV_CONFIG_H */
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#endif /* !CONFIG_WIN32 && !CONFIG_OS2 */
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#ifdef HAVE_AV_CONFIG_H
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# include "bswap.h"
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// Use rip-relative addressing if compiling PIC code on x86-64.
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# if defined(__MINGW32__) || defined(__CYGWIN__) || \
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defined(__OS2__) || (defined (__OpenBSD__) && !defined(__ELF__))
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# if defined(ARCH_X86_64) && defined(PIC)
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# define MANGLE(a) "_" #a"(%%rip)"
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# else
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# define MANGLE(a) "_" #a
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# endif
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# else
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# if defined(ARCH_X86_64) && defined(PIC)
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# define MANGLE(a) #a"(%%rip)"
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# else
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# define MANGLE(a) #a
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# endif
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# endif
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/* debug stuff */
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# ifndef DEBUG
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# define NDEBUG
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# endif
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# include <assert.h>
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/* dprintf macros */
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# if defined(CONFIG_WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__)
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inline void dprintf(const char* fmt,...) {}
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# else
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# ifdef DEBUG
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# define dprintf(fmt,...) av_log(NULL, AV_LOG_DEBUG, fmt, __VA_ARGS__)
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# else
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# define dprintf(fmt,...)
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# endif
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# endif /* !CONFIG_WIN32 */
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# define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0)
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//rounded divison & shift
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#define RSHIFT(a,b) ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))
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/* assume b>0 */
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#define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
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#define ABS(a) ((a) >= 0 ? (a) : (-(a)))
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#define FFMAX(a,b) ((a) > (b) ? (a) : (b))
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#define FFMIN(a,b) ((a) > (b) ? (b) : (a))
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extern const uint32_t inverse[256];
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#if defined(ARCH_X86) || defined(ARCH_X86_64)
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# define FASTDIV(a,b) \
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({\
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int ret,dmy;\
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asm volatile(\
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"mull %3"\
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:"=d"(ret),"=a"(dmy)\
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:"1"(a),"g"(inverse[b])\
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);\
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ret;\
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})
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#elif defined(CONFIG_FASTDIV)
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# define FASTDIV(a,b) ((uint32_t)((((uint64_t)a)*inverse[b])>>32))
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#else
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# define FASTDIV(a,b) ((a)/(b))
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#endif
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/* define it to include statistics code (useful only for optimizing
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codec efficiency */
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//#define STATS
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#ifdef STATS
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enum {
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ST_UNKNOWN,
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ST_DC,
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ST_INTRA_AC,
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ST_INTER_AC,
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ST_INTRA_MB,
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ST_INTER_MB,
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ST_MV,
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ST_NB,
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};
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extern int st_current_index;
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extern unsigned int st_bit_counts[ST_NB];
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extern unsigned int st_out_bit_counts[ST_NB];
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void print_stats(void);
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#endif
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/* misc math functions */
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extern const uint8_t ff_log2_tab[256];
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static inline int av_log2(unsigned int v)
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{
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int n;
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n = 0;
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if (v & 0xffff0000) {
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v >>= 16;
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n += 16;
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}
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if (v & 0xff00) {
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v >>= 8;
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n += 8;
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}
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n += ff_log2_tab[v];
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return n;
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}
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static inline int av_log2_16bit(unsigned int v)
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{
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int n;
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n = 0;
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if (v & 0xff00) {
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v >>= 8;
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n += 8;
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}
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n += ff_log2_tab[v];
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return n;
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}
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/* median of 3 */
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static inline int mid_pred(int a, int b, int c)
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{
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#if 0
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int t= (a-b)&((a-b)>>31);
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a-=t;
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b+=t;
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b-= (b-c)&((b-c)>>31);
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b+= (a-b)&((a-b)>>31);
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return b;
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#else
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if(a>b){
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if(c>b){
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if(c>a) b=a;
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else b=c;
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}
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}else{
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if(b>c){
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if(c>a) b=c;
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else b=a;
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}
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}
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return b;
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#endif
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}
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static inline int clip(int a, int amin, int amax)
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{
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if (a < amin)
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return amin;
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else if (a > amax)
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return amax;
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else
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return a;
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}
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static inline int clip_uint8(int a)
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{
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if (a&(~255)) return (-a)>>31;
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else return a;
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}
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/* math */
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extern const uint8_t ff_sqrt_tab[128];
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int64_t ff_gcd(int64_t a, int64_t b);
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static inline int ff_sqrt(int a)
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{
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int ret=0;
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int s;
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int ret_sq=0;
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if(a<128) return ff_sqrt_tab[a];
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for(s=15; s>=0; s--){
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int b= ret_sq + (1<<(s*2)) + (ret<<s)*2;
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if(b<=a){
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ret_sq=b;
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ret+= 1<<s;
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}
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}
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return ret;
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}
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/**
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* converts fourcc string to int
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*/
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static inline int ff_get_fourcc(const char *s){
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assert( strlen(s)==4 );
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return (s[0]) + (s[1]<<8) + (s[2]<<16) + (s[3]<<24);
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}
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#define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24))
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#define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24))
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#if defined(ARCH_X86) || defined(ARCH_X86_64)
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#define MASK_ABS(mask, level)\
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asm volatile(\
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"cdq \n\t"\
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"xorl %1, %0 \n\t"\
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"subl %1, %0 \n\t"\
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: "+a" (level), "=&d" (mask)\
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);
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#else
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#define MASK_ABS(mask, level)\
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mask= level>>31;\
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level= (level^mask)-mask;
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#endif
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#if __CPU__ >= 686 && !defined(RUNTIME_CPUDETECT)
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#define COPY3_IF_LT(x,y,a,b,c,d)\
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asm volatile (\
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"cmpl %0, %3 \n\t"\
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"cmovl %3, %0 \n\t"\
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"cmovl %4, %1 \n\t"\
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"cmovl %5, %2 \n\t"\
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: "+r" (x), "+r" (a), "+r" (c)\
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: "r" (y), "r" (b), "r" (d)\
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);
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#else
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#define COPY3_IF_LT(x,y,a,b,c,d)\
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if((y)<(x)){\
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(x)=(y);\
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(a)=(b);\
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(c)=(d);\
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}
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#endif
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#if defined(ARCH_X86) || defined(ARCH_X86_64)
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static inline long long rdtsc(void)
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{
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long long l;
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asm volatile( "rdtsc\n\t"
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: "=A" (l)
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);
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return l;
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}
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#define START_TIMER \
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uint64_t tend;\
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uint64_t tstart= rdtsc();\
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#define STOP_TIMER(id) \
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tend= rdtsc();\
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{\
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static uint64_t tsum=0;\
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static int tcount=0;\
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static int tskip_count=0;\
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if(tcount<2 || tend - tstart < 8*tsum/tcount){\
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tsum+= tend - tstart;\
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tcount++;\
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}else\
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tskip_count++;\
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if(256*256*256*64%(tcount+tskip_count)==0){\
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av_log(NULL, AV_LOG_DEBUG, "%Ld dezicycles in %s, %d runs, %d skips\n", tsum*10/tcount, id, tcount, tskip_count);\
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}\
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}
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#else
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#define START_TIMER
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#define STOP_TIMER(id) {}
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#endif
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#define CLAMP_TO_8BIT(d) ((d > 0xff) ? 0xff : (d < 0) ? 0 : d)
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/* avoid usage of various functions */
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#define malloc please_use_av_malloc
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#define free please_use_av_free
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#define realloc please_use_av_realloc
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#define time time_is_forbidden_due_to_security_issues
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#define rand rand_is_forbidden_due_to_state_trashing
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#define srand srand_is_forbidden_due_to_state_trashing
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#define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
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#define strcat strcat_is_forbidden_due_to_security_issues_use_pstrcat
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#if !(defined(LIBAVFORMAT_BUILD) || defined(_FRAMEHOOK_H))
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#define printf please_use_av_log
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#define fprintf please_use_av_log
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#endif
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#define CHECKED_ALLOCZ(p, size)\
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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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perror("malloc");\
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goto fail;\
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}\
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}
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#endif /* HAVE_AV_CONFIG_H */
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#endif /* COMMON_H */
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