mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-20 22:41:11 +00:00
306 lines
7.0 KiB
C
306 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
|
|
|
|
#ifdef HAVE_ALTIVEC_VECTOR_BRACES
|
|
#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 "config.h"
|
|
#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(ARCH_X86_64) && defined(PIC)
|
|
# define LOCAL_MANGLE(a) #a "(%%rip)"
|
|
#else
|
|
# define LOCAL_MANGLE(a) #a
|
|
#endif
|
|
|
|
#define MANGLE(a) EXTERN_PREFIX LOCAL_MANGLE(a)
|
|
|
|
/* 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[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 ] ;
|
|
#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<<s);
|
|
}
|
|
|
|
return b - (a<b*b);
|
|
}
|
|
|
|
#if defined(ARCH_X86)
|
|
#define MASK_ABS(mask, level)\
|
|
asm volatile(\
|
|
"cltd \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 puts
|
|
#define puts 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 av_const long long llrint(double x)
|
|
{
|
|
return rint(x);
|
|
}
|
|
#endif /* HAVE_LLRINT */
|
|
|
|
#ifndef HAVE_LRINT
|
|
static av_always_inline av_const long int lrint(double x)
|
|
{
|
|
return rint(x);
|
|
}
|
|
#endif /* HAVE_LRINT */
|
|
|
|
#ifndef HAVE_LRINTF
|
|
static av_always_inline av_const long int lrintf(float x)
|
|
{
|
|
return (int)(rint(x));
|
|
}
|
|
#endif /* HAVE_LRINTF */
|
|
|
|
#ifndef 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
|
|
static av_always_inline av_const float roundf(float x)
|
|
{
|
|
return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
|
|
}
|
|
#endif /* HAVE_ROUNDF */
|
|
|
|
#endif /* FFMPEG_INTERNAL_H */
|