mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
284 lines
6.4 KiB
284 lines
6.4 KiB
/* |
|
* 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 |
|
|
|
#include <stdint.h> |
|
#include <assert.h> |
|
|
|
#ifndef attribute_used |
|
#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0) |
|
# define attribute_used __attribute__((used)) |
|
#else |
|
# define attribute_used |
|
#endif |
|
#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" |
|
|
|
#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 |
|
|
|
/* __MINGW32__ end */ |
|
#elif defined (CONFIG_OS2) |
|
/* OS/2 EMX */ |
|
|
|
# include <float.h> |
|
|
|
#endif /* !__MINGW32__ && CONFIG_OS2 */ |
|
|
|
#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(__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(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 */ |
|
#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 |
|
#define exit exit_is_forbidden |
|
#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 av_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 */
|
|
|