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284 lines
6.4 KiB
284 lines
6.4 KiB
/* |
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* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* @file internal.h |
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* common internal api header. |
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*/ |
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#ifndef INTERNAL_H |
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#define INTERNAL_H |
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#include <stdint.h> |
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#include <assert.h> |
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#ifndef attribute_used |
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#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0) |
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# define attribute_used __attribute__((used)) |
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#else |
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# define attribute_used |
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#endif |
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#endif |
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#ifndef M_PI |
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#define M_PI 3.14159265358979323846 |
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#endif |
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#ifndef INT16_MIN |
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#define INT16_MIN (-0x7fff-1) |
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#endif |
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#ifndef INT16_MAX |
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#define INT16_MAX 0x7fff |
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#endif |
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#ifndef INT32_MIN |
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#define INT32_MIN (-0x7fffffff-1) |
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#endif |
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#ifndef INT32_MAX |
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#define INT32_MAX 0x7fffffff |
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#endif |
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#ifndef UINT32_MAX |
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#define UINT32_MAX 0xffffffff |
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#endif |
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#ifndef INT64_MIN |
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#define INT64_MIN (-0x7fffffffffffffffLL-1) |
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#endif |
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#ifndef INT64_MAX |
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#define INT64_MAX INT64_C(9223372036854775807) |
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#endif |
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#ifndef UINT64_MAX |
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#define UINT64_MAX UINT64_C(0xFFFFFFFFFFFFFFFF) |
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#endif |
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#ifndef INT_BIT |
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# if INT_MAX != 2147483647 |
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# define INT_BIT 64 |
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# else |
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# define INT_BIT 32 |
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# endif |
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#endif |
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#if ( defined(__PIC__) || defined(__pic__) ) && ! defined(PIC) |
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# define PIC |
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#endif |
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#include "intreadwrite.h" |
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#include "bswap.h" |
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#include <stddef.h> |
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#ifndef offsetof |
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# define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F)) |
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#endif |
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#ifdef __MINGW32__ |
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# ifdef _DEBUG |
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# define DEBUG |
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# endif |
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# define snprintf _snprintf |
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# define vsnprintf _vsnprintf |
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/* __MINGW32__ end */ |
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#elif defined (CONFIG_OS2) |
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/* OS/2 EMX */ |
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# include <float.h> |
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#endif /* !__MINGW32__ && CONFIG_OS2 */ |
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#ifdef USE_FASTMEMCPY |
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# include "libvo/fastmemcpy.h" |
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# define memcpy(a,b,c) fast_memcpy(a,b,c) |
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#endif |
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// Use rip-relative addressing if compiling PIC code on x86-64. |
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#if defined(__MINGW32__) || defined(__CYGWIN__) || \ |
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defined(__OS2__) || (defined (__OpenBSD__) && !defined(__ELF__)) |
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# if defined(ARCH_X86_64) && defined(PIC) |
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# define MANGLE(a) "_" #a"(%%rip)" |
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# else |
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# define MANGLE(a) "_" #a |
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# endif |
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#else |
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# if defined(ARCH_X86_64) && defined(PIC) |
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# define MANGLE(a) #a"(%%rip)" |
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# elif defined(CONFIG_DARWIN) |
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# define MANGLE(a) "_" #a |
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# else |
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# define MANGLE(a) #a |
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# endif |
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#endif |
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/* debug stuff */ |
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#if !defined(DEBUG) && !defined(NDEBUG) |
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# define NDEBUG |
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#endif |
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#include <assert.h> |
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/* dprintf macros */ |
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#ifdef DEBUG |
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# define dprintf(pctx, ...) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__) |
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#else |
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# define dprintf(pctx, ...) |
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#endif |
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#define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0) |
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/* math */ |
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extern const uint32_t ff_inverse[256]; |
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#if defined(ARCH_X86) |
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# define FASTDIV(a,b) \ |
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({\ |
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int ret,dmy;\ |
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asm volatile(\ |
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"mull %3"\ |
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:"=d"(ret),"=a"(dmy)\ |
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:"1"(a),"g"(ff_inverse[b])\ |
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);\ |
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ret;\ |
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}) |
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#elif defined(ARCH_ARMV4L) |
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# define FASTDIV(a,b) \ |
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({\ |
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int ret,dmy;\ |
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asm volatile(\ |
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"umull %1, %0, %2, %3"\ |
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:"=&r"(ret),"=&r"(dmy)\ |
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:"r"(a),"r"(ff_inverse[b])\ |
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);\ |
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ret;\ |
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}) |
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#elif defined(CONFIG_FASTDIV) |
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# define FASTDIV(a,b) ((uint32_t)((((uint64_t)a)*ff_inverse[b])>>32)) |
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#else |
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# define FASTDIV(a,b) ((a)/(b)) |
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#endif |
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extern const uint8_t ff_sqrt_tab[128]; |
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static inline int ff_sqrt(int a) |
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{ |
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int ret=0; |
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int s, b; |
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if(a<128) return ff_sqrt_tab[a]; |
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for(s=30; s>=0; s-=2){ |
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ret+=ret; |
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b= (1+2*ret)<<s; |
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if(b<=a){ |
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a-=b; |
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ret++; |
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} |
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} |
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return ret; |
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} |
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#if defined(ARCH_X86) |
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#define MASK_ABS(mask, level)\ |
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asm volatile(\ |
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"cdq \n\t"\ |
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"xorl %1, %0 \n\t"\ |
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"subl %1, %0 \n\t"\ |
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: "+a" (level), "=&d" (mask)\ |
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); |
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#else |
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#define MASK_ABS(mask, level)\ |
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mask= level>>31;\ |
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level= (level^mask)-mask; |
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#endif |
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#ifdef HAVE_CMOV |
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#define COPY3_IF_LT(x,y,a,b,c,d)\ |
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asm volatile (\ |
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"cmpl %0, %3 \n\t"\ |
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"cmovl %3, %0 \n\t"\ |
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"cmovl %4, %1 \n\t"\ |
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"cmovl %5, %2 \n\t"\ |
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: "+&r" (x), "+&r" (a), "+r" (c)\ |
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: "r" (y), "r" (b), "r" (d)\ |
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); |
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#else |
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#define COPY3_IF_LT(x,y,a,b,c,d)\ |
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if((y)<(x)){\ |
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(x)=(y);\ |
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(a)=(b);\ |
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(c)=(d);\ |
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} |
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#endif |
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/* avoid usage of various functions */ |
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#define malloc please_use_av_malloc |
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#define free please_use_av_free |
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#define realloc please_use_av_realloc |
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#define time time_is_forbidden_due_to_security_issues |
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#define rand rand_is_forbidden_due_to_state_trashing |
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#define srand srand_is_forbidden_due_to_state_trashing |
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#define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf |
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#define strcat strcat_is_forbidden_due_to_security_issues_use_av_strlcat |
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#define exit exit_is_forbidden |
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#if !(defined(LIBAVFORMAT_BUILD) || defined(_FRAMEHOOK_H)) |
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#define printf please_use_av_log |
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#define fprintf please_use_av_log |
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#endif |
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#define CHECKED_ALLOCZ(p, size)\ |
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{\ |
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p= av_mallocz(size);\ |
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if(p==NULL && (size)!=0){\ |
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perror("malloc");\ |
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goto fail;\ |
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}\ |
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} |
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#ifndef HAVE_LRINTF |
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/* XXX: add ISOC specific test to avoid specific BSD testing. */ |
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/* better than nothing implementation. */ |
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/* btw, rintf() is existing on fbsd too -- alex */ |
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static av_always_inline long int lrintf(float x) |
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{ |
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#ifdef __MINGW32__ |
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# ifdef ARCH_X86_32 |
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int32_t i; |
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asm volatile( |
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"fistpl %0\n\t" |
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: "=m" (i) : "t" (x) : "st" |
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); |
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return i; |
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# else |
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/* XXX: incorrect, but make it compile */ |
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return (int)(x + (x < 0 ? -0.5 : 0.5)); |
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# endif /* ARCH_X86_32 */ |
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#else |
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return (int)(rint(x)); |
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#endif /* __MINGW32__ */ |
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} |
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#endif /* HAVE_LRINTF */ |
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#endif /* INTERNAL_H */
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