internal.h
资源名称:X264CODEC.rar [点击查看]
上传用户:lctgjx
上传日期:2022-06-04
资源大小:8887k
文件大小:7k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual 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 <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)
- #define AVV(x, y,z) (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, ...)
- # define dprintf
- #endif
- #define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%dn", __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 nt"
- "xorl %1, %0 nt"
- "subl %1, %0 nt"
- : "+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 nt"
- "cmovl %3, %0 nt"
- "cmovl %4, %1 nt"
- "cmovl %5, %2 nt"
- : "+&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 int64_t llrint(double x)
- {
- return rint(x);
- }
- #endif /* HAVE_LLRINT */
- #ifndef HAVE_LRINT
- static av_always_inline av_const int64_t lrint(double x)
- {
- return rint(x);
- }
- #endif /* HAVE_LRINT */
- #ifndef HAVE_LRINTF
- static av_always_inline av_const int64_t 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 */