X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavutil%2Finternal.h;h=cd63b3d2a45ae389f99141ac8609af15b9acf249;hb=5af41508310b856b1e5ca605e50e956bf81eeef9;hp=7d55ac658da685480f94c06b0653b2b55076cd90;hpb=987903826b0dba2e134be200ac94be66b4a3acf1;p=ffmpeg diff --git a/libavutil/internal.h b/libavutil/internal.h index 7d55ac658da..cd63b3d2a45 100644 --- a/libavutil/internal.h +++ b/libavutil/internal.h @@ -19,8 +19,8 @@ */ /** - * @file internal.h - * common internal api header. + * @file libavutil/internal.h + * common internal API header */ #ifndef AVUTIL_INTERNAL_H @@ -30,12 +30,17 @@ # define NDEBUG #endif +#include #include #include #include +#include "config.h" +#include "common.h" +#include "mem.h" +#include "timer.h" #ifndef attribute_align_arg -#if defined(__GNUC__) && (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__>1) +#if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,2) # define attribute_align_arg __attribute__((force_align_arg_pointer)) #else # define attribute_align_arg @@ -43,15 +48,23 @@ #endif #ifndef attribute_used -#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0) +#if AV_GCC_VERSION_AT_LEAST(3,1) # define attribute_used __attribute__((used)) #else # define attribute_used #endif #endif +#ifndef av_alias +#if HAVE_ATTRIBUTE_MAY_ALIAS +# define av_alias __attribute__((may_alias)) +#else +# define av_alias +#endif +#endif + #ifndef INT16_MIN -#define INT16_MIN (-0x7fff-1) +#define INT16_MIN (-0x7fff - 1) #endif #ifndef INT16_MAX @@ -59,7 +72,7 @@ #endif #ifndef INT32_MIN -#define INT32_MIN (-0x7fffffff-1) +#define INT32_MIN (-0x7fffffff - 1) #endif #ifndef INT32_MAX @@ -71,7 +84,7 @@ #endif #ifndef INT64_MIN -#define INT64_MIN (-0x7fffffffffffffffLL-1) +#define INT64_MIN (-0x7fffffffffffffffLL - 1) #endif #ifndef INT64_MAX @@ -83,27 +96,18 @@ #endif #ifndef INT_BIT -# if INT_MAX != 2147483647 -# define INT_BIT 64 -# else -# define INT_BIT 32 -# endif +# define INT_BIT (CHAR_BIT * sizeof(int)) #endif -#if ( defined(__PIC__) || defined(__pic__) ) && ! defined(PIC) -# define PIC -#endif - -#include "config.h" -#include "intreadwrite.h" -#include "bswap.h" - #ifndef offsetof -# define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F)) +# define offsetof(T, F) ((unsigned int)((char *)&((T *)0)->F)) #endif +/* Use to export labels from asm. */ +#define LABEL_MANGLE(a) EXTERN_PREFIX #a + // Use rip-relative addressing if compiling PIC code on x86-64. -#if defined(ARCH_X86_64) && defined(PIC) +#if ARCH_X86_64 && defined(PIC) # define LOCAL_MANGLE(a) #a "(%%rip)" #else # define LOCAL_MANGLE(a) #a @@ -124,73 +128,31 @@ /* math */ -extern const uint32_t ff_inverse[256]; - -#if defined(ARCH_X86) -# define FASTDIV(a,b) \ - ({\ - int ret,dmy;\ - asm volatile(\ - "mull %3"\ - :"=d"(ret),"=a"(dmy)\ - :"1"(a),"g"(ff_inverse[b])\ - );\ - ret;\ - }) -#elif defined(HAVE_ARMV6) -static inline av_const int FASTDIV(int a, int b) -{ - int r; - asm volatile("cmp %2, #0 \n\t" - "smmul %0, %1, %2 \n\t" - "rsblt %0, %0, #0 \n\t" - : "=r"(r) : "r"(a), "r"(ff_inverse[b])); - return r; -} -#elif defined(ARCH_ARMV4L) -# define FASTDIV(a,b) \ - ({\ - int ret,dmy;\ - asm volatile(\ - "umull %1, %0, %2, %3"\ - :"=&r"(ret),"=&r"(dmy)\ - :"r"(a),"r"(ff_inverse[b])\ - );\ - ret;\ - }) -#elif defined(CONFIG_FASTDIV) -# define FASTDIV(a,b) ((uint32_t)((((uint64_t)a)*ff_inverse[b])>>32)) -#else -# define FASTDIV(a,b) ((a)/(b)) -#endif - extern const uint8_t ff_sqrt_tab[256]; -static inline int av_log2_16bit(unsigned int v); - static inline av_const unsigned int ff_sqrt(unsigned int a) { unsigned int b; - if(a<255) return (ff_sqrt_tab[a+1]-1)>>4; - else if(a<(1<<12)) b= ff_sqrt_tab[a>>4 ]>>2; -#ifndef CONFIG_SMALL - else if(a<(1<<14)) b= ff_sqrt_tab[a>>6 ]>>1; - else if(a<(1<<16)) b= ff_sqrt_tab[a>>8 ] ; + if (a < 255) return (ff_sqrt_tab[a + 1] - 1) >> 4; + else if (a < (1 << 12)) b = ff_sqrt_tab[a >> 4] >> 2; +#if !CONFIG_SMALL + else if (a < (1 << 14)) b = ff_sqrt_tab[a >> 6] >> 1; + else if (a < (1 << 16)) b = ff_sqrt_tab[a >> 8] ; #endif - else{ - int s= av_log2_16bit(a>>16)>>1; - unsigned int c= a>>(s+2); - b= ff_sqrt_tab[c>>(s+8)]; - b= FASTDIV(c,b) + (b<> 16) >> 1; + unsigned int c = a >> (s + 2); + b = ff_sqrt_tab[c >> (s + 8)]; + b = FASTDIV(c,b) + (b << s); } - return b - (a>31;\ - level= (level^mask)-mask; -#endif - -#ifdef HAVE_CMOV -#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);\ -} + mask = level >> 31;\ + level = (level ^ mask) - mask; #endif -/* avoid usage of various functions */ +/* avoid usage of dangerous/inappropriate system functions */ #undef malloc #define malloc please_use_av_malloc #undef free @@ -231,70 +174,117 @@ if((y)<(x)){\ #undef time #define time time_is_forbidden_due_to_security_issues #undef rand -#define rand rand_is_forbidden_due_to_state_trashing_use_av_random +#define rand rand_is_forbidden_due_to_state_trashing_use_av_lfg_get #undef srand -#define srand srand_is_forbidden_due_to_state_trashing_use_av_init_random +#define srand srand_is_forbidden_due_to_state_trashing_use_av_lfg_init #undef random -#define random random_is_forbidden_due_to_state_trashing_use_av_random +#define random random_is_forbidden_due_to_state_trashing_use_av_lfg_get #undef sprintf #define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf #undef strcat #define strcat strcat_is_forbidden_due_to_security_issues_use_av_strlcat #undef exit #define exit exit_is_forbidden -#if !(defined(LIBAVFORMAT_BUILD) || defined(FFMPEG_FRAMEHOOK_H)) +#ifndef LIBAVFORMAT_BUILD #undef printf -#define printf please_use_av_log +#define printf please_use_av_log_instead_of_printf #undef fprintf -#define fprintf please_use_av_log +#define fprintf please_use_av_log_instead_of_fprintf #undef puts -#define puts please_use_av_log +#define puts please_use_av_log_instead_of_puts #undef perror #define perror please_use_av_log_instead_of_perror #endif -#define CHECKED_ALLOCZ(p, size)\ +#define FF_ALLOC_OR_GOTO(ctx, p, size, label)\ {\ - p= av_mallocz(size);\ - if(p==NULL && (size)!=0){\ - av_log(NULL, AV_LOG_ERROR, "Cannot allocate memory.");\ - goto fail;\ + p = av_malloc(size);\ + if (p == NULL && (size) != 0) {\ + av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\ + goto label;\ }\ } -#ifndef HAVE_LLRINT +#define FF_ALLOCZ_OR_GOTO(ctx, p, size, label)\ +{\ + p = av_mallocz(size);\ + if (p == NULL && (size) != 0) {\ + av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\ + goto label;\ + }\ +} + +#if !HAVE_EXP2 +#undef exp2 +#define exp2(x) exp((x) * 0.693147180559945) +#endif /* HAVE_EXP2 */ + +#if !HAVE_EXP2F +#undef exp2f +#define exp2f(x) exp2(x) +#endif /* HAVE_EXP2F */ + +#if !HAVE_LLRINT static av_always_inline av_const long long llrint(double x) { return rint(x); } #endif /* HAVE_LLRINT */ -#ifndef HAVE_LRINT +#if !HAVE_LOG2 +#undef log2 +#define log2(x) (log(x) * 1.44269504088896340736) +#endif /* HAVE_LOG2 */ + +#if !HAVE_LOG2F +#undef log2f +#define log2f(x) log2(x) +#endif /* HAVE_LOG2F */ + +#if !HAVE_LRINT static av_always_inline av_const long int lrint(double x) { return rint(x); } #endif /* HAVE_LRINT */ -#ifndef HAVE_LRINTF +#if !HAVE_LRINTF static av_always_inline av_const long int lrintf(float x) { return (int)(rint(x)); } #endif /* HAVE_LRINTF */ -#ifndef HAVE_ROUND +#if !HAVE_ROUND static av_always_inline av_const double round(double x) { return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5); } #endif /* HAVE_ROUND */ -#ifndef HAVE_ROUNDF +#if !HAVE_ROUNDF static av_always_inline av_const float roundf(float x) { return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5); } #endif /* HAVE_ROUNDF */ +#if !HAVE_TRUNCF +static av_always_inline av_const float truncf(float x) +{ + return (x > 0) ? floor(x) : ceil(x); +} +#endif /* HAVE_TRUNCF */ + +/** + * Returns NULL if CONFIG_SMALL is true, otherwise the argument + * without modification. Used to disable the definition of strings + * (for example AVCodec long_names). + */ +#if CONFIG_SMALL +# define NULL_IF_CONFIG_SMALL(x) NULL +#else +# define NULL_IF_CONFIG_SMALL(x) x +#endif + #endif /* AVUTIL_INTERNAL_H */