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Diffstat (limited to 'contrib/ffmpeg/libavutil/internal.h')
| -rw-r--r-- | contrib/ffmpeg/libavutil/internal.h | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavutil/internal.h b/contrib/ffmpeg/libavutil/internal.h new file mode 100644 index 000000000..749a85c45 --- /dev/null +++ b/contrib/ffmpeg/libavutil/internal.h @@ -0,0 +1,314 @@ +/* + * 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[256]; + +static inline int av_log2_16bit(unsigned int v); + +static inline 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 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 */ |