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FFmpeg/libavutil/internal.h
Michael Kostylev a33cab3a9a Check for the presence of llrint(), lrint(), round() and roundf()
and provide simple replacements if they are unavailable.
patch by Michael Kostylev, mik niipt ru

Originally committed as revision 11326 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-27 01:53:02 +00:00

309 lines
7.0 KiB
C

/*
* 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 FFMPEG_INTERNAL_H
#define FFMPEG_INTERNAL_H
#if !defined(DEBUG) && !defined(NDEBUG)
# define NDEBUG
#endif
#include <stdint.h>
#include <stddef.h>
#include <assert.h>
#ifndef attribute_align_arg
#if defined(__GNUC__) && (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__>1)
# define attribute_align_arg __attribute__((force_align_arg_pointer))
#else
# define attribute_align_arg
#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
/* Use Apple-specific AltiVec syntax for vector declarations when necessary. */
#ifdef __APPLE_CC__
#define AVV(x...) (x)
#else
#define AVV(x...) {x}
#endif
#ifndef M_PI
#define M_PI 3.14159265358979323846
#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_C(9223372036854775807)
#endif
#ifndef UINT64_MAX
#define UINT64_MAX UINT64_C(0xFFFFFFFFFFFFFFFF)
#endif
#ifndef INT_BIT
# if INT_MAX != 2147483647
# define INT_BIT 64
# else
# define INT_BIT 32
# endif
#endif
#if ( defined(__PIC__) || defined(__pic__) ) && ! defined(PIC)
# define PIC
#endif
#include "intreadwrite.h"
#include "bswap.h"
#ifndef offsetof
# define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F))
#endif
#ifdef USE_FASTMEMCPY
# include "libvo/fastmemcpy.h"
# define memcpy(a,b,c) fast_memcpy(a,b,c)
#endif
// Use rip-relative addressing if compiling PIC code on x86-64.
#if defined(__MINGW32__) || defined(__CYGWIN__) || defined(__DJGPP__) || \
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(__APPLE__)
# define MANGLE(a) "_" #a
# else
# define MANGLE(a) #a
# endif
#endif
/* debug stuff */
/* dprintf macros */
#ifdef DEBUG
# define dprintf(pctx, ...) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__)
#else
# define dprintf(pctx, ...)
#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 const uint8_t ff_sqrt_tab[128];
static inline int ff_sqrt(int a)
{
int ret=0;
int s, b;
if(a<128) return ff_sqrt_tab[a];
for(s=30; s>=0; s-=2){
ret+=ret;
b= (1+2*ret)<<s;
if(b<=a){
a-=b;
ret++;
}
}
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 */
#undef malloc
#define malloc please_use_av_malloc
#undef free
#define free please_use_av_free
#undef realloc
#define realloc please_use_av_realloc
#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
#undef srand
#define srand srand_is_forbidden_due_to_state_trashing_use_av_init_random
#undef random
#define random random_is_forbidden_due_to_state_trashing_use_av_random
#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))
#undef printf
#define printf please_use_av_log
#undef fprintf
#define fprintf please_use_av_log
#undef perror
#define perror please_use_av_log_instead_of_perror
#endif
#define CHECKED_ALLOCZ(p, size)\
{\
p= av_mallocz(size);\
if(p==NULL && (size)!=0){\
av_log(NULL, AV_LOG_ERROR, "Cannot allocate memory.");\
goto fail;\
}\
}
#ifndef HAVE_LLRINT
static av_always_inline long long llrint(double x)
{
return rint(x);
}
#endif /* HAVE_LLRINT */
#ifndef HAVE_LRINT
static av_always_inline long int lrint(double x)
{
return rint(x);
}
#endif /* HAVE_LRINT */
#ifndef HAVE_LRINTF
static av_always_inline long int lrintf(float x)
{
return (int)(rint(x));
}
#endif /* HAVE_LRINTF */
#ifndef HAVE_ROUND
static av_always_inline double round(double x)
{
return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
}
#endif /* HAVE_ROUND */
#ifndef HAVE_ROUNDF
static av_always_inline float roundf(float x)
{
return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
}
#endif /* HAVE_ROUNDF */
#endif /* FFMPEG_INTERNAL_H */