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/*
* 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)
# 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
# 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)
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(ARCH_ARMV4L)
# define FASTDIV(a,b) \
({\
int ret,dmy;\
asm volatile(\
"umull %1, %0, %2, %3"\
:"=&r"(ret),"=&r"(dmy)\
:"r"(a),"r"(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
/* math */
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) || 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
/* 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__ */
}
#endif /* HAVE_LRINTF */
#endif /* INTERNAL_H */
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