/* * 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_av_strlcat #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 */