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Diffstat (limited to 'contrib/ffmpeg/libavutil/internal.h')
| -rw-r--r-- | contrib/ffmpeg/libavutil/internal.h | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavutil/internal.h b/contrib/ffmpeg/libavutil/internal.h new file mode 100644 index 000000000..4cb0d2a7e --- /dev/null +++ b/contrib/ffmpeg/libavutil/internal.h @@ -0,0 +1,235 @@ +/* + * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> + * + * 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 internal.h + * common internal api header. + */ + +#ifndef INTERNAL_H +#define INTERNAL_H + +#if ( defined(__PIC__) || defined(__pic__) ) && ! defined(PIC) +# define PIC +#endif + +#ifndef ENODATA +# define ENODATA 61 +#endif + +#include "bswap.h" + +#include <stddef.h> +#ifndef offsetof +# define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F)) +#endif + +#ifdef __MINGW32__ +# ifdef _DEBUG +# define DEBUG +# endif + +# define snprintf _snprintf +# define vsnprintf _vsnprintf + +# ifdef CONFIG_WINCE +# define perror(a) +# define abort() +# endif + +/* __MINGW32__ end */ +#elif defined (CONFIG_OS2) +/* OS/2 EMX */ + +# include <float.h> + +#endif /* !__MINGW32__ && CONFIG_OS2 */ + +#ifdef USE_FASTMEMCPY +# include "libvo/fastmemcpy.h" +#endif + +// 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 <assert.h> + +/* dprintf macros */ +#ifdef DEBUG +# define dprintf(fmt,...) av_log(NULL, AV_LOG_DEBUG, fmt, __VA_ARGS__) +#else +# define dprintf(fmt,...) +#endif + +#define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0) + +/* 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(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 FF_IMPORT_ATTR const uint8_t ff_sqrt_tab[128]; + +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; +} + +#if defined(ARCH_X86) +#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 + +#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);\ +} +#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_32 + 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_32 */ +#else + return (int)(rint(x)); +#endif /* __MINGW32__ */ +} +#endif /* HAVE_LRINTF */ + +#endif /* INTERNAL_H */ |