X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavutil%2Fcommon.h;h=4b195776bf1850ed3e13a35c9d0f3ed56a5ca541;hb=4764fdc987b696adeab569012bb71414410cb9b3;hp=abf6c02f0eac9a755673fe0fd17e02e44d25791a;hpb=2f30a81d192b90fd3b12f2ce40227ed74a331b6d;p=ffmpeg diff --git a/libavutil/common.h b/libavutil/common.h index abf6c02f0ea..4b195776bf1 100644 --- a/libavutil/common.h +++ b/libavutil/common.h @@ -1,18 +1,32 @@ +/* + * 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.h - * common internal api header. + * common internal and external API header */ -#ifndef COMMON_H -#define COMMON_H - -#ifndef M_PI -#define M_PI 3.14159265358979323846 -#endif +#ifndef FFMPEG_COMMON_H +#define FFMPEG_COMMON_H -#if ( defined(__PIC__) || defined(__pic__) ) && ! defined(PIC) -# define PIC -#endif +#include #ifdef HAVE_AV_CONFIG_H /* only include the following when compiling package */ @@ -23,315 +37,90 @@ # include # include # include -# ifndef __BEOS__ -# include -# else -# include "berrno.h" -# endif +# include # include - -# ifndef ENODATA -# define ENODATA 61 -# endif - -#include -#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 +#ifndef av_always_inline #if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0) -# define always_inline __attribute__((always_inline)) inline +# define av_always_inline __attribute__((always_inline)) inline #else -# define always_inline inline +# define av_always_inline inline #endif #endif -#ifndef attribute_used +#ifndef av_noinline #if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0) -# define attribute_used __attribute__((used)) +# define av_noinline __attribute__((noinline)) #else -# define attribute_used +# define av_noinline #endif #endif -#ifndef attribute_unused +#ifndef av_pure #if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0) -# define attribute_unused __attribute__((unused)) +# define av_pure __attribute__((pure)) #else -# define attribute_unused +# define av_pure #endif #endif -#ifndef EMULATE_INTTYPES -# include +#ifndef av_const +#if defined(__GNUC__) && (__GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ > 5) +# define av_const __attribute__((const)) #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 __MINGW32__ - 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 /* EMULATE_INTTYPES */ - -#ifndef PRId64 -#define PRId64 "lld" -#endif - -#ifndef PRIu64 -#define PRIu64 "llu" -#endif - -#ifndef PRIx64 -#define PRIx64 "llx" +# define av_const #endif - -#ifndef PRId32 -#define PRId32 "d" -#endif - -#ifndef PRIdFAST16 -#define PRIdFAST16 PRId32 -#endif - -#ifndef PRIdFAST32 -#define PRIdFAST32 PRId32 -#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 -#endif - -#ifndef UINT32_MAX -#define UINT32_MAX 0xffffffff #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 +#ifndef av_cold +#if defined(__GNUC__) && (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ > 2) +# define av_cold __attribute__((cold)) +#else +# define av_cold #endif - -#ifdef __MINGW32__ - -/* 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 - -# ifdef CONFIG_WINCE -# define perror(a) -# endif - -# endif - -/* __MINGW32__ 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 - +# include "internal.h" #endif /* HAVE_AV_CONFIG_H */ -/* CONFIG_OS2 end */ +#ifndef attribute_deprecated +#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0) +# define attribute_deprecated __attribute__((deprecated)) #else - -/* unix */ - -#ifndef int64_t_C -#define int64_t_C(c) (c ## LL) -#define uint64_t_C(c) (c ## ULL) +# define attribute_deprecated +#endif #endif -#ifdef HAVE_AV_CONFIG_H - -# ifdef USE_FASTMEMCPY -# include "fastmemcpy.h" -# endif -# endif /* HAVE_AV_CONFIG_H */ - -#endif /* !__MINGW32__ && !CONFIG_OS2 */ - -#ifdef HAVE_AV_CONFIG_H - -#if defined(__MINGW32__) && !defined(BUILD_AVUTIL) && defined(BUILD_SHARED_AV) -# define FF_IMPORT_ATTR __declspec(dllimport) +#ifndef av_unused +#if defined(__GNUC__) +# define av_unused __attribute__((unused)) #else -# define FF_IMPORT_ATTR +# define av_unused +#endif #endif - -# 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)" -# elif defined(CONFIG_DARWIN) -# define MANGLE(a) "_" #a -# else -# define MANGLE(a) #a -# endif -# endif - -/* debug stuff */ - -# if !defined(DEBUG) && !defined(NDEBUG) -# define NDEBUG -# endif -# include - -/* dprintf macros */ -# ifdef DEBUG -# define dprintf(fmt,...) av_log(NULL, AV_LOG_DEBUG, fmt, __VA_ARGS__) -# else -# define dprintf(fmt,...) -# endif - -# ifdef CONFIG_WINCE -# define abort() -# endif - -# define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0) +#include "mem.h" //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 FFABS(a) ((a) >= 0 ? (a) : (-(a))) +#define FFSIGN(a) ((a) > 0 ? 1 : -1) #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 FFSWAP(type,a,b) do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0) /* misc math functions */ -extern FF_IMPORT_ATTR const uint8_t ff_log2_tab[256]; +extern const uint8_t ff_log2_tab[256]; -static inline int av_log2(unsigned int v) +static inline av_const int av_log2(unsigned int v) { - int n; - - n = 0; + int n = 0; if (v & 0xffff0000) { v >>= 16; n += 16; @@ -345,11 +134,9 @@ static inline int av_log2(unsigned int v) return n; } -static inline int av_log2_16bit(unsigned int v) +static inline av_const int av_log2_16bit(unsigned int v) { - int n; - - n = 0; + int n = 0; if (v & 0xff00) { v >>= 8; n += 8; @@ -360,9 +147,23 @@ static inline int av_log2_16bit(unsigned int v) } /* median of 3 */ -static inline int mid_pred(int a, int b, int c) +static inline av_const int mid_pred(int a, int b, int c) { -#if 0 +#ifdef HAVE_CMOV + int i=b; + asm volatile( + "cmp %2, %1 \n\t" + "cmovg %1, %0 \n\t" + "cmovg %2, %1 \n\t" + "cmp %3, %1 \n\t" + "cmovl %3, %1 \n\t" + "cmp %1, %0 \n\t" + "cmovg %1, %0 \n\t" + :"+&r"(i), "+&r"(a) + :"r"(b), "r"(c) + ); + return i; +#elif 0 int t= (a-b)&((a-b)>>31); a-=t; b+=t; @@ -391,11 +192,11 @@ static inline int mid_pred(int a, int b, int c) * @param a value to clip * @param amin minimum value of the clip range * @param amax maximum value of the clip range - * @return cliped value + * @return clipped value */ -static inline int clip(int a, int amin, int amax) +static inline av_const int av_clip(int a, int amin, int amax) { - if (a < amin) return amin; + if (a < amin) return amin; else if (a > amax) return amax; else return a; } @@ -403,42 +204,35 @@ static inline int clip(int a, int amin, int amax) /** * clip a signed integer value into the 0-255 range * @param a value to clip - * @return cliped value + * @return clipped value */ -static inline uint8_t clip_uint8(int a) +static inline av_const uint8_t av_clip_uint8(int a) { if (a&(~255)) return (-a)>>31; else return a; } -/* math */ -extern FF_IMPORT_ATTR const uint8_t ff_sqrt_tab[128]; - -int64_t ff_gcd(int64_t a, int64_t b); - -static inline int ff_sqrt(int a) +/** + * clip a signed integer value into the -32768,32767 range + * @param a value to clip + * @return clipped value + */ +static inline av_const int16_t av_clip_int16(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<>31) ^ 32767; + else return a; } +/* math */ +int64_t av_const ff_gcd(int64_t a, int64_t b); + /** * converts fourcc string to int */ -static inline int ff_get_fourcc(const char *s){ +static inline av_pure int ff_get_fourcc(const char *s){ +#ifdef HAVE_AV_CONFIG_H assert( strlen(s)==4 ); +#endif return (s[0]) + (s[1]<<8) + (s[2]<<16) + (s[3]<<24); } @@ -446,21 +240,19 @@ static inline int ff_get_fourcc(const char *s){ #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 - +/*! + * \def GET_UTF8(val, GET_BYTE, ERROR) + * converts a UTF-8 character (up to 4 bytes long) to its 32-bit UCS-4 encoded form + * \param val is the output and should be of type uint32_t. It holds the converted + * UCS-4 character and should be a left value. + * \param GET_BYTE gets UTF-8 encoded bytes from any proper source. It can be + * a function or a statement whose return value or evaluated value is of type + * uint8_t. It will be executed up to 4 times for values in the valid UTF-8 range, + * and up to 7 times in the general case. + * \param ERROR action that should be taken when an invalid UTF-8 byte is returned + * from GET_BYTE. It should be a statement that jumps out of the macro, + * like exit(), goto, return, break, or continue. + */ #define GET_UTF8(val, GET_BYTE, ERROR)\ val= GET_BYTE;\ {\ @@ -476,43 +268,72 @@ static inline int ff_get_fourcc(const char *s){ }\ } -#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 +/*! + * \def PUT_UTF8(val, tmp, PUT_BYTE) + * converts a 32-bit unicode character to its UTF-8 encoded form (up to 4 bytes long). + * \param val is an input only argument and should be of type uint32_t. It holds + * a ucs4 encoded unicode character that is to be converted to UTF-8. If + * val is given as a function it's executed only once. + * \param tmp is a temporary variable and should be of type uint8_t. It + * represents an intermediate value during conversion that is to be + * outputted by PUT_BYTE. + * \param PUT_BYTE writes the converted UTF-8 bytes to any proper destination. + * It could be a function or a statement, and uses tmp as the input byte. + * For example, PUT_BYTE could be "*output++ = tmp;" PUT_BYTE will be + * executed up to 4 times for values in the valid UTF-8 range and up to + * 7 times in the general case, depending on the length of the converted + * unicode character. + */ +#define PUT_UTF8(val, tmp, PUT_BYTE)\ + {\ + int bytes, shift;\ + uint32_t in = val;\ + if (in < 0x80) {\ + tmp = in;\ + PUT_BYTE\ + } else {\ + bytes = (av_log2(in) + 4) / 5;\ + shift = (bytes - 1) * 6;\ + tmp = (256 - (256 >> bytes)) | (in >> shift);\ + PUT_BYTE\ + while (shift >= 6) {\ + shift -= 6;\ + tmp = 0x80 | ((in >> shift) & 0x3f);\ + PUT_BYTE\ + }\ + }\ + } -#if defined(ARCH_X86) || defined(ARCH_X86_64) || defined(ARCH_POWERPC) +#if defined(ARCH_X86) || defined(ARCH_POWERPC) || defined(ARCH_BFIN) +#define AV_READ_TIME read_time #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); + uint64_t a, d; + asm volatile("rdtsc\n\t" + : "=a" (a), "=d" (d)); + return (d << 32) | (a & 0xffffffff); } -#elif defined(ARCH_X86) +#elif defined(ARCH_X86_32) static inline long long read_time(void) { - long long l; - asm volatile( "rdtsc\n\t" - : "=A" (l) - ); - return l; + long long l; + asm volatile("rdtsc\n\t" + : "=A" (l)); + return l; +} +#elif ARCH_BFIN +static inline uint64_t read_time(void) +{ + union { + struct { + unsigned lo; + unsigned hi; + } p; + unsigned long long c; + } t; + asm volatile ("%0=cycles; %1=cycles2;" : "=d" (t.p.lo), "=d" (t.p.hi)); + return t.c; } #else //FIXME check ppc64 static inline uint64_t read_time(void) @@ -534,83 +355,34 @@ static inline uint64_t read_time(void) return (((uint64_t)tbu)<<32) | (uint64_t)tbl; } #endif +#elif defined(HAVE_GETHRTIME) +#define AV_READ_TIME gethrtime +#endif +#ifdef AV_READ_TIME #define START_TIMER \ uint64_t tend;\ -uint64_t tstart= read_time();\ +uint64_t tstart= AV_READ_TIME();\ #define STOP_TIMER(id) \ -tend= read_time();\ +tend= AV_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, "%"PRIu64" dezicycles in %s, %d runs, %d skips\n", tsum*10/tcount, id, tcount, tskip_count);\ - }\ + static uint64_t tsum=0;\ + static int tcount=0;\ + static int tskip_count=0;\ + if(tcount<2 || tend - tstart < FFMAX(8*tsum/tcount, 2000)){\ + tsum+= tend - tstart;\ + tcount++;\ + }else\ + tskip_count++;\ + if(((tcount+tskip_count)&(tcount+tskip_count-1))==0){\ + av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" 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;\ - }\ -} - -#ifndef HAVE_LRINTF -/* XXX: add ISOC specific test to avoid specific BSD testing. */ -/* better than nothing implementation. */ -/* btw, rintf() is existing on fbsd too -- alex */ -static always_inline long int lrintf(float x) -{ -#ifdef __MINGW32__ -# ifdef ARCH_X86 - int32_t i; - asm volatile( - "fistpl %0\n\t" - : "=m" (i) : "t" (x) : "st" - ); - return i; -# else - /* XXX: incorrect, but make it compile */ - return (int)(x + (x < 0 ? -0.5 : 0.5)); -# endif /* ARCH_X86 */ -#else - return (int)(rint(x)); -#endif /* __MINGW32__ */ -} -#else -#ifndef _ISOC9X_SOURCE -#define _ISOC9X_SOURCE -#endif -#include -#endif /* HAVE_LRINTF */ - -#endif /* HAVE_AV_CONFIG_H */ - -#endif /* COMMON_H */ +#endif /* FFMPEG_COMMON_H */