ffmpeg / libavutil / common.h @ 72468a03
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/**
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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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#if defined(WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__) && !defined(EMULATE_INTTYPES)
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# define EMULATE_INTTYPES
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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 /* EMULATE_INTTYPES */ |
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#ifndef PRId64
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#define PRId64 "lld" |
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#endif
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#ifndef PRIu64
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#define PRIu64 "llu" |
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#endif
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#ifndef PRIx64
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#define PRIx64 "llx" |
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#endif
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#ifndef PRId32
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#define PRId32 "d" |
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#endif
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#ifndef PRIdFAST16
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#define PRIdFAST16 PRId32
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#endif
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#ifndef PRIdFAST32
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#define PRIdFAST32 PRId32
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#endif
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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 INT32_MIN
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#define INT32_MIN (-0x7fffffff-1) |
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#endif
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#ifndef INT32_MAX
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#define INT32_MAX 0x7fffffff |
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#endif
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#ifndef UINT32_MAX
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#define UINT32_MAX 0xffffffff |
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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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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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typedef uint64_t uint_fast64_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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# ifdef CONFIG_WINCE
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# define perror(a)
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# endif
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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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#if defined(__MINGW32__) && !defined(BUILD_AVUTIL) && defined(BUILD_SHARED_AV)
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# define FF_IMPORT_ATTR __declspec(dllimport)
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#else
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# define FF_IMPORT_ATTR
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#endif
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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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# elif defined(CONFIG_DARWIN)
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# define MANGLE(a) "_" #a |
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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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# if !defined(DEBUG) && !defined(NDEBUG)
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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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# ifdef CONFIG_WINCE
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# define abort()
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# endif
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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 FF_IMPORT_ATTR 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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|
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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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} |
| 420 |
}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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} |
| 425 |
} |
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return b;
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#endif
|
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} |
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|
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/**
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* clip a signed integer value into the amin-amax range
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* @param a value to clip
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* @param amin minimum value of the clip range
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* @param amax maximum value of the clip range
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* @return cliped value
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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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| 439 |
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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| 443 |
else
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return a;
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} |
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|
| 447 |
/**
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* clip a signed integer value into the 0-255 range
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* @param a value to clip
|
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* @return cliped value
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*/
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static inline uint8_t clip_uint8(int a) |
| 453 |
{
|
| 454 |
if (a&(~255)) return (-a)>>31; |
| 455 |
else return a; |
| 456 |
} |
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|
| 458 |
/* math */
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extern FF_IMPORT_ATTR const uint8_t ff_sqrt_tab[128]; |
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|
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int64_t ff_gcd(int64_t a, int64_t b); |
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|
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static inline int ff_sqrt(int a) |
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{
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int ret=0; |
| 466 |
int s;
|
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int ret_sq=0; |
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|
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if(a<128) return ff_sqrt_tab[a]; |
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|
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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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} |
| 477 |
} |
| 478 |
return ret;
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| 479 |
} |
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|
| 481 |
/**
|
| 482 |
* converts fourcc string to int
|
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*/
|
| 484 |
static inline int ff_get_fourcc(const char *s){ |
| 485 |
assert( strlen(s)==4 );
|
| 486 |
|
| 487 |
return (s[0]) + (s[1]<<8) + (s[2]<<16) + (s[3]<<24); |
| 488 |
} |
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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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|
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|
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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)\ |
| 501 |
); |
| 502 |
#else
|
| 503 |
#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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|
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|
| 509 |
#if __CPU__ >= 686 && !defined(RUNTIME_CPUDETECT) |
| 510 |
#define COPY3_IF_LT(x,y,a,b,c,d)\
|
| 511 |
asm volatile (\ |
| 512 |
"cmpl %0, %3 \n\t"\
|
| 513 |
"cmovl %3, %0 \n\t"\
|
| 514 |
"cmovl %4, %1 \n\t"\
|
| 515 |
"cmovl %5, %2 \n\t"\
|
| 516 |
: "+r" (x), "+r" (a), "+r" (c)\ |
| 517 |
: "r" (y), "r" (b), "r" (d)\ |
| 518 |
); |
| 519 |
#else
|
| 520 |
#define COPY3_IF_LT(x,y,a,b,c,d)\
|
| 521 |
if((y)<(x)){\
|
| 522 |
(x)=(y);\ |
| 523 |
(a)=(b);\ |
| 524 |
(c)=(d);\ |
| 525 |
} |
| 526 |
#endif
|
| 527 |
|
| 528 |
#if defined(ARCH_X86) || defined(ARCH_X86_64) || defined(ARCH_POWERPC)
|
| 529 |
#if defined(ARCH_X86_64)
|
| 530 |
static inline uint64_t read_time(void) |
| 531 |
{
|
| 532 |
uint64_t a, d; |
| 533 |
asm volatile( "rdtsc\n\t" |
| 534 |
: "=a" (a), "=d" (d) |
| 535 |
); |
| 536 |
return (d << 32) | (a & 0xffffffff); |
| 537 |
} |
| 538 |
#elif defined(ARCH_X86)
|
| 539 |
static inline long long read_time(void) |
| 540 |
{
|
| 541 |
long long l; |
| 542 |
asm volatile( "rdtsc\n\t" |
| 543 |
: "=A" (l)
|
| 544 |
); |
| 545 |
return l;
|
| 546 |
} |
| 547 |
#else //FIXME check ppc64 |
| 548 |
static inline uint64_t read_time(void) |
| 549 |
{
|
| 550 |
uint32_t tbu, tbl, temp; |
| 551 |
|
| 552 |
/* from section 2.2.1 of the 32-bit PowerPC PEM */
|
| 553 |
__asm__ __volatile__( |
| 554 |
"1:\n"
|
| 555 |
"mftbu %2\n"
|
| 556 |
"mftb %0\n"
|
| 557 |
"mftbu %1\n"
|
| 558 |
"cmpw %2,%1\n"
|
| 559 |
"bne 1b\n"
|
| 560 |
: "=r"(tbl), "=r"(tbu), "=r"(temp) |
| 561 |
: |
| 562 |
: "cc");
|
| 563 |
|
| 564 |
return (((uint64_t)tbu)<<32) | (uint64_t)tbl; |
| 565 |
} |
| 566 |
#endif
|
| 567 |
|
| 568 |
#define START_TIMER \
|
| 569 |
uint64_t tend;\ |
| 570 |
uint64_t tstart= read_time();\ |
| 571 |
|
| 572 |
#define STOP_TIMER(id) \
|
| 573 |
tend= read_time();\ |
| 574 |
{\
|
| 575 |
static uint64_t tsum=0;\ |
| 576 |
static int tcount=0;\ |
| 577 |
static int tskip_count=0;\ |
| 578 |
if(tcount<2 || tend - tstart < 8*tsum/tcount){\ |
| 579 |
tsum+= tend - tstart;\ |
| 580 |
tcount++;\ |
| 581 |
}else\
|
| 582 |
tskip_count++;\ |
| 583 |
if(256*256*256*64%(tcount+tskip_count)==0){\ |
| 584 |
av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" dezicycles in %s, %d runs, %d skips\n", tsum*10/tcount, id, tcount, tskip_count);\ |
| 585 |
}\ |
| 586 |
} |
| 587 |
#else
|
| 588 |
#define START_TIMER
|
| 589 |
#define STOP_TIMER(id) {}
|
| 590 |
#endif
|
| 591 |
|
| 592 |
/* avoid usage of various functions */
|
| 593 |
#define malloc please_use_av_malloc
|
| 594 |
#define free please_use_av_free
|
| 595 |
#define realloc please_use_av_realloc
|
| 596 |
#define time time_is_forbidden_due_to_security_issues
|
| 597 |
#define rand rand_is_forbidden_due_to_state_trashing
|
| 598 |
#define srand srand_is_forbidden_due_to_state_trashing
|
| 599 |
#define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
|
| 600 |
#define strcat strcat_is_forbidden_due_to_security_issues_use_pstrcat
|
| 601 |
#if !(defined(LIBAVFORMAT_BUILD) || defined(_FRAMEHOOK_H))
|
| 602 |
#define printf please_use_av_log
|
| 603 |
#define fprintf please_use_av_log
|
| 604 |
#endif
|
| 605 |
|
| 606 |
#define CHECKED_ALLOCZ(p, size)\
|
| 607 |
{\
|
| 608 |
p= av_mallocz(size);\ |
| 609 |
if(p==NULL && (size)!=0){\ |
| 610 |
perror("malloc");\
|
| 611 |
goto fail;\
|
| 612 |
}\ |
| 613 |
} |
| 614 |
|
| 615 |
#ifndef HAVE_LRINTF
|
| 616 |
/* XXX: add ISOC specific test to avoid specific BSD testing. */
|
| 617 |
/* better than nothing implementation. */
|
| 618 |
/* btw, rintf() is existing on fbsd too -- alex */
|
| 619 |
static always_inline long int lrintf(float x) |
| 620 |
{
|
| 621 |
#ifdef CONFIG_WIN32
|
| 622 |
# ifdef ARCH_X86
|
| 623 |
int32_t i; |
| 624 |
asm volatile( |
| 625 |
"fistpl %0\n\t"
|
| 626 |
: "=m" (i) : "t" (x) : "st" |
| 627 |
); |
| 628 |
return i;
|
| 629 |
# else
|
| 630 |
/* XXX: incorrect, but make it compile */
|
| 631 |
return (int)(x + (x < 0 ? -0.5 : 0.5)); |
| 632 |
# endif /* ARCH_X86 */ |
| 633 |
#else
|
| 634 |
return (int)(rint(x)); |
| 635 |
#endif /* CONFIG_WIN32 */ |
| 636 |
} |
| 637 |
#else
|
| 638 |
#ifndef _ISOC9X_SOURCE
|
| 639 |
#define _ISOC9X_SOURCE
|
| 640 |
#endif
|
| 641 |
#include <math.h> |
| 642 |
#endif /* HAVE_LRINTF */ |
| 643 |
|
| 644 |
#endif /* HAVE_AV_CONFIG_H */ |
| 645 |
|
| 646 |
#endif /* COMMON_H */ |