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Diffstat (limited to 'libavutil/common.h')
| -rw-r--r-- | libavutil/common.h | 548 |
1 files changed, 548 insertions, 0 deletions
diff --git a/libavutil/common.h b/libavutil/common.h new file mode 100644 index 0000000000..7d5edb4a7d --- /dev/null +++ b/libavutil/common.h @@ -0,0 +1,548 @@ +/** + * @file common.h + * common internal api header. + */ + +#ifndef COMMON_H +#define COMMON_H + +#if defined(WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__) +# define CONFIG_WIN32 +#endif + +#ifndef M_PI +#define M_PI 3.14159265358979323846 +#endif + +#ifdef HAVE_AV_CONFIG_H +/* only include the following when compiling package */ +# include "config.h" + +# include <stdlib.h> +# include <stdio.h> +# include <string.h> +# include <ctype.h> +# include <limits.h> +# ifndef __BEOS__ +# include <errno.h> +# else +# include "berrno.h" +# endif +# include <math.h> + +# ifndef ENODATA +# define ENODATA 61 +# endif + +#include <stddef.h> +#ifndef offsetof +# define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F)) +#endif + +#define AVOPTION_CODEC_BOOL(name, help, field) \ + { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_BOOL } +#define AVOPTION_CODEC_DOUBLE(name, help, field, minv, maxv, defval) \ + { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_DOUBLE, minv, maxv, defval } +#define AVOPTION_CODEC_FLAG(name, help, field, flag, defval) \ + { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_FLAG, flag, 0, defval } +#define AVOPTION_CODEC_INT(name, help, field, minv, maxv, defval) \ + { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_INT, minv, maxv, defval } +#define AVOPTION_CODEC_STRING(name, help, field, str, val) \ + { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_STRING, .defval = val, .defstr = str } +#define AVOPTION_CODEC_RCOVERRIDE(name, help, field) \ + { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_RCOVERRIDE, .defval = 0, .defstr = NULL } +#define AVOPTION_SUB(ptr) { .name = NULL, .help = (const char*)ptr } +#define AVOPTION_END() AVOPTION_SUB(NULL) + +#endif /* HAVE_AV_CONFIG_H */ + +/* Suppress restrict if it was not defined in config.h. */ +#ifndef restrict +# define restrict +#endif + +#ifndef always_inline +#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0) +# define always_inline __attribute__((always_inline)) inline +#else +# define always_inline inline +#endif +#endif + +#ifndef attribute_used +#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0) +# define attribute_used __attribute__((used)) +#else +# define attribute_used +#endif +#endif + +#ifndef attribute_unused +#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0) +# define attribute_unused __attribute__((unused)) +#else +# define attribute_unused +#endif +#endif + +#ifndef EMULATE_INTTYPES +# include <inttypes.h> +#else + typedef signed char int8_t; + typedef signed short int16_t; + typedef signed int int32_t; + typedef unsigned char uint8_t; + typedef unsigned short uint16_t; + typedef unsigned int uint32_t; + +# ifdef CONFIG_WIN32 + typedef signed __int64 int64_t; + typedef unsigned __int64 uint64_t; +# else /* other OS */ + typedef signed long long int64_t; + typedef unsigned long long uint64_t; +# endif /* other OS */ +#endif /* HAVE_INTTYPES_H */ + +#ifndef INT16_MIN +#define INT16_MIN (-0x7fff-1) +#endif + +#ifndef INT16_MAX +#define INT16_MAX 0x7fff +#endif + +#ifndef INT64_MIN +#define INT64_MIN (-0x7fffffffffffffffLL-1) +#endif + +#ifndef INT64_MAX +#define INT64_MAX int64_t_C(9223372036854775807) +#endif + +#ifndef UINT64_MAX +#define UINT64_MAX uint64_t_C(0xFFFFFFFFFFFFFFFF) +#endif + +#ifdef EMULATE_FAST_INT +typedef signed char int_fast8_t; +typedef signed int int_fast16_t; +typedef signed int int_fast32_t; +typedef unsigned char uint_fast8_t; +typedef unsigned int uint_fast16_t; +typedef unsigned int uint_fast32_t; +typedef uint64_t uint_fast64_t; +#endif + +#ifndef INT_BIT +# if INT_MAX != 2147483647 +# define INT_BIT 64 +# else +# define INT_BIT 32 +# endif +#endif + +#if defined(CONFIG_OS2) || defined(CONFIG_SUNOS) +static inline float floorf(float f) { + return floor(f); +} +#endif + +#ifdef CONFIG_WIN32 + +/* windows */ + +# if !defined(__MINGW32__) && !defined(__CYGWIN__) +# define int64_t_C(c) (c ## i64) +# define uint64_t_C(c) (c ## i64) + +# ifdef HAVE_AV_CONFIG_H +# define inline __inline +# endif + +# else +# define int64_t_C(c) (c ## LL) +# define uint64_t_C(c) (c ## ULL) +# endif /* __MINGW32__ */ + +# ifdef HAVE_AV_CONFIG_H +# ifdef _DEBUG +# define DEBUG +# endif + +# define snprintf _snprintf +# define vsnprintf _vsnprintf +# endif + +/* CONFIG_WIN32 end */ +#elif defined (CONFIG_OS2) +/* OS/2 EMX */ + +#ifndef int64_t_C +#define int64_t_C(c) (c ## LL) +#define uint64_t_C(c) (c ## ULL) +#endif + +#ifdef HAVE_AV_CONFIG_H + +#ifdef USE_FASTMEMCPY +#include "fastmemcpy.h" +#endif + +#include <float.h> + +#endif /* HAVE_AV_CONFIG_H */ + +/* CONFIG_OS2 end */ +#else + +/* unix */ + +#ifndef int64_t_C +#define int64_t_C(c) (c ## LL) +#define uint64_t_C(c) (c ## ULL) +#endif + +#ifdef HAVE_AV_CONFIG_H + +# ifdef USE_FASTMEMCPY +# include "fastmemcpy.h" +# endif +# endif /* HAVE_AV_CONFIG_H */ + +#endif /* !CONFIG_WIN32 && !CONFIG_OS2 */ + +#ifdef HAVE_AV_CONFIG_H + +# include "bswap.h" + +// Use rip-relative addressing if compiling PIC code on x86-64. +# if defined(__MINGW32__) || defined(__CYGWIN__) || \ + defined(__OS2__) || (defined (__OpenBSD__) && !defined(__ELF__)) +# if defined(ARCH_X86_64) && defined(PIC) +# define MANGLE(a) "_" #a"(%%rip)" +# else +# define MANGLE(a) "_" #a +# endif +# else +# if defined(ARCH_X86_64) && defined(PIC) +# define MANGLE(a) #a"(%%rip)" +# else +# define MANGLE(a) #a +# endif +# endif + +/* debug stuff */ + +# ifndef DEBUG +# define NDEBUG +# endif +# include <assert.h> + +/* dprintf macros */ +# if defined(CONFIG_WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__) + +inline void dprintf(const char* fmt,...) {} + +# else + +# ifdef DEBUG +# define dprintf(fmt,...) av_log(NULL, AV_LOG_DEBUG, fmt, __VA_ARGS__) +# else +# define dprintf(fmt,...) +# endif + +# endif /* !CONFIG_WIN32 */ + +# define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0) + +//rounded divison & shift +#define RSHIFT(a,b) ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b)) +/* assume b>0 */ +#define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b)) +#define ABS(a) ((a) >= 0 ? (a) : (-(a))) + +#define FFMAX(a,b) ((a) > (b) ? (a) : (b)) +#define FFMIN(a,b) ((a) > (b) ? (b) : (a)) + +extern const uint32_t inverse[256]; + +#if defined(ARCH_X86) || defined(ARCH_X86_64) +# define FASTDIV(a,b) \ + ({\ + int ret,dmy;\ + asm volatile(\ + "mull %3"\ + :"=d"(ret),"=a"(dmy)\ + :"1"(a),"g"(inverse[b])\ + );\ + ret;\ + }) +#elif defined(CONFIG_FASTDIV) +# define FASTDIV(a,b) ((uint32_t)((((uint64_t)a)*inverse[b])>>32)) +#else +# define FASTDIV(a,b) ((a)/(b)) +#endif + +/* define it to include statistics code (useful only for optimizing + codec efficiency */ +//#define STATS + +#ifdef STATS + +enum { + ST_UNKNOWN, + ST_DC, + ST_INTRA_AC, + ST_INTER_AC, + ST_INTRA_MB, + ST_INTER_MB, + ST_MV, + ST_NB, +}; + +extern int st_current_index; +extern unsigned int st_bit_counts[ST_NB]; +extern unsigned int st_out_bit_counts[ST_NB]; + +void print_stats(void); +#endif + +/* misc math functions */ +extern const uint8_t ff_log2_tab[256]; + +static inline int av_log2(unsigned int v) +{ + int n; + + n = 0; + if (v & 0xffff0000) { + v >>= 16; + n += 16; + } + if (v & 0xff00) { + v >>= 8; + n += 8; + } + n += ff_log2_tab[v]; + + return n; +} + +static inline int av_log2_16bit(unsigned int v) +{ + int n; + + n = 0; + if (v & 0xff00) { + v >>= 8; + n += 8; + } + n += ff_log2_tab[v]; + + return n; +} + +/* median of 3 */ +static inline int mid_pred(int a, int b, int c) +{ +#if 0 + int t= (a-b)&((a-b)>>31); + a-=t; + b+=t; + b-= (b-c)&((b-c)>>31); + b+= (a-b)&((a-b)>>31); + + return b; +#else + if(a>b){ + if(c>b){ + if(c>a) b=a; + else b=c; + } + }else{ + if(b>c){ + if(c>a) b=c; + else b=a; + } + } + return b; +#endif +} + +static inline int clip(int a, int amin, int amax) +{ + if (a < amin) + return amin; + else if (a > amax) + return amax; + else + return a; +} + +static inline int clip_uint8(int a) +{ + if (a&(~255)) return (-a)>>31; + else return a; +} + +/* math */ +extern const uint8_t ff_sqrt_tab[128]; + +int64_t ff_gcd(int64_t a, int64_t b); + +static inline int ff_sqrt(int a) +{ + int ret=0; + int s; + int ret_sq=0; + + if(a<128) return ff_sqrt_tab[a]; + + for(s=15; s>=0; s--){ + int b= ret_sq + (1<<(s*2)) + (ret<<s)*2; + if(b<=a){ + ret_sq=b; + ret+= 1<<s; + } + } + return ret; +} + +/** + * converts fourcc string to int + */ +static inline int ff_get_fourcc(const char *s){ + assert( strlen(s)==4 ); + + return (s[0]) + (s[1]<<8) + (s[2]<<16) + (s[3]<<24); +} + +#define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24)) +#define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24)) + + +#if defined(ARCH_X86) || defined(ARCH_X86_64) +#define MASK_ABS(mask, level)\ + asm volatile(\ + "cdq \n\t"\ + "xorl %1, %0 \n\t"\ + "subl %1, %0 \n\t"\ + : "+a" (level), "=&d" (mask)\ + ); +#else +#define MASK_ABS(mask, level)\ + mask= level>>31;\ + level= (level^mask)-mask; +#endif + + +#if __CPU__ >= 686 && !defined(RUNTIME_CPUDETECT) +#define COPY3_IF_LT(x,y,a,b,c,d)\ +asm volatile (\ + "cmpl %0, %3 \n\t"\ + "cmovl %3, %0 \n\t"\ + "cmovl %4, %1 \n\t"\ + "cmovl %5, %2 \n\t"\ + : "+r" (x), "+r" (a), "+r" (c)\ + : "r" (y), "r" (b), "r" (d)\ +); +#else +#define COPY3_IF_LT(x,y,a,b,c,d)\ +if((y)<(x)){\ + (x)=(y);\ + (a)=(b);\ + (c)=(d);\ +} +#endif + +#if defined(ARCH_X86) || defined(ARCH_X86_64) || defined(ARCH_POWERPC) +#if defined(ARCH_X86_64) +static inline uint64_t read_time(void) +{ + uint64_t a, d; + asm volatile( "rdtsc\n\t" + : "=a" (a), "=d" (d) + ); + return (d << 32) | (a & 0xffffffff); +} +#elif defined(ARCH_X86) +static inline long long read_time(void) +{ + long long l; + asm volatile( "rdtsc\n\t" + : "=A" (l) + ); + return l; +} +#else //FIXME check ppc64 +static inline uint64_t read_time(void) +{ + uint32_t tbu, tbl, temp; + + /* from section 2.2.1 of the 32-bit PowerPC PEM */ + __asm__ __volatile__( + "1:\n" + "mftbu %2\n" + "mftb %0\n" + "mftbu %1\n" + "cmpw %2,%1\n" + "bne 1b\n" + : "=r"(tbl), "=r"(tbu), "=r"(temp) + : + : "cc"); + + return (((uint64_t)tbu)<<32) | (uint64_t)tbl; +} +#endif + +#define START_TIMER \ +uint64_t tend;\ +uint64_t tstart= read_time();\ + +#define STOP_TIMER(id) \ +tend= read_time();\ +{\ + static uint64_t tsum=0;\ + static int tcount=0;\ + static int tskip_count=0;\ + if(tcount<2 || tend - tstart < 8*tsum/tcount){\ + tsum+= tend - tstart;\ + tcount++;\ + }else\ + tskip_count++;\ + if(256*256*256*64%(tcount+tskip_count)==0){\ + av_log(NULL, AV_LOG_DEBUG, "%Ld dezicycles in %s, %d runs, %d skips\n", tsum*10/tcount, id, tcount, tskip_count);\ + }\ +} +#else +#define START_TIMER +#define STOP_TIMER(id) {} +#endif + +/* avoid usage of various functions */ +#define malloc please_use_av_malloc +#define free please_use_av_free +#define realloc please_use_av_realloc +#define time time_is_forbidden_due_to_security_issues +#define rand rand_is_forbidden_due_to_state_trashing +#define srand srand_is_forbidden_due_to_state_trashing +#define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf +#define strcat strcat_is_forbidden_due_to_security_issues_use_pstrcat +#if !(defined(LIBAVFORMAT_BUILD) || defined(_FRAMEHOOK_H)) +#define printf please_use_av_log +#define fprintf please_use_av_log +#endif + +#define CHECKED_ALLOCZ(p, size)\ +{\ + p= av_mallocz(size);\ + if(p==NULL && (size)!=0){\ + perror("malloc");\ + goto fail;\ + }\ +} + +#endif /* HAVE_AV_CONFIG_H */ + +#endif /* COMMON_H */ |