+++ /dev/null
-/*
- * 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 common.h
- * common internal and external api header.
- */
-
-#ifndef COMMON_H
-#define COMMON_H
-
-#include <inttypes.h>
-
-#ifdef HAVE_AV_CONFIG_H
-/* only include the following when compiling package */
-# include "config.h"
-
-# include <stdlib.h>
-# include <stdio.h>
-# include <string.h>
-# include <ctype.h>
-# include <limits.h>
-# include <errno.h>
-# include <math.h>
-#endif /* HAVE_AV_CONFIG_H */
-
-#ifndef av_always_inline
-#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
-# define av_always_inline __attribute__((always_inline)) inline
-# define av_noinline __attribute__((noinline))
-#else
-# define av_always_inline inline
-# define av_noinline
-#endif
-#endif
-
-#ifdef HAVE_AV_CONFIG_H
-# include "internal.h"
-#endif /* HAVE_AV_CONFIG_H */
-
-#ifndef attribute_deprecated
-#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
-# define attribute_deprecated __attribute__((deprecated))
-#else
-# define attribute_deprecated
-#endif
-#endif
-
-#include "mem.h"
-
-//rounded divison & shift
-#define RSHIFT(a,b) ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))
-/* assume b>0 */
-#define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
-#define FFABS(a) ((a) >= 0 ? (a) : (-(a)))
-#define FFSIGN(a) ((a) > 0 ? 1 : -1)
-
-#define FFMAX(a,b) ((a) > (b) ? (a) : (b))
-#define FFMIN(a,b) ((a) > (b) ? (b) : (a))
-
-#define FFSWAP(type,a,b) do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)
-
-/* misc math functions */
-extern const uint8_t ff_log2_tab[256];
-
-static inline int av_log2(unsigned int v)
-{
- int n;
-
- n = 0;
- if (v & 0xffff0000) {
- v >>= 16;
- n += 16;
- }
- if (v & 0xff00) {
- v >>= 8;
- n += 8;
- }
- n += ff_log2_tab[v];
-
- return n;
-}
-
-static inline int av_log2_16bit(unsigned int v)
-{
- int n;
-
- n = 0;
- if (v & 0xff00) {
- v >>= 8;
- n += 8;
- }
- n += ff_log2_tab[v];
-
- return n;
-}
-
-/* median of 3 */
-static inline int mid_pred(int a, int b, int c)
-{
-#ifdef HAVE_CMOV
- int i=b;
- asm volatile(
- "cmp %2, %1 \n\t"
- "cmovg %1, %0 \n\t"
- "cmovg %2, %1 \n\t"
- "cmp %3, %1 \n\t"
- "cmovl %3, %1 \n\t"
- "cmp %1, %0 \n\t"
- "cmovg %1, %0 \n\t"
- :"+&r"(i), "+&r"(a)
- :"r"(b), "r"(c)
- );
- return i;
-#elif 0
- int t= (a-b)&((a-b)>>31);
- a-=t;
- b+=t;
- b-= (b-c)&((b-c)>>31);
- b+= (a-b)&((a-b)>>31);
-
- return b;
-#else
- if(a>b){
- if(c>b){
- if(c>a) b=a;
- else b=c;
- }
- }else{
- if(b>c){
- if(c>a) b=c;
- else b=a;
- }
- }
- return b;
-#endif
-}
-
-/**
- * clip a signed integer value into the amin-amax range
- * @param a value to clip
- * @param amin minimum value of the clip range
- * @param amax maximum value of the clip range
- * @return clipped value
- */
-static inline int av_clip(int a, int amin, int amax)
-{
- if (a < amin) return amin;
- else if (a > amax) return amax;
- else return a;
-}
-
-/**
- * clip a signed integer value into the 0-255 range
- * @param a value to clip
- * @return clipped value
- */
-static inline uint8_t av_clip_uint8(int a)
-{
- if (a&(~255)) return (-a)>>31;
- else return a;
-}
-
-/* math */
-int64_t ff_gcd(int64_t a, int64_t b);
-
-/**
- * converts fourcc string to int
- */
-static inline int ff_get_fourcc(const char *s){
-#ifdef HAVE_AV_CONFIG_H
- assert( strlen(s)==4 );
-#endif
-
- return (s[0]) + (s[1]<<8) + (s[2]<<16) + (s[3]<<24);
-}
-
-#define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24))
-#define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24))
-
-/*!
- * \def GET_UTF8(val, GET_BYTE, ERROR)
- * converts a utf-8 character (up to 4 bytes long) to its 32-bit ucs-4 encoded form
- * \param val is the output and should be of type uint32_t. It holds the converted
- * ucs-4 character and should be a left value.
- * \param GET_BYTE gets utf-8 encoded bytes from any proper source. It can be
- * a function or a statement whose return value or evaluated value is of type
- * uint8_t. It will be executed up to 4 times for values in the valid utf-8 range,
- * and up to 7 times in the general case.
- * \param ERROR action that should be taken when an invalid utf-8 byte is returned
- * from GET_BYTE. It should be a statement that jumps out of the macro,
- * like exit(), goto, return, break, or continue.
- */
-#define GET_UTF8(val, GET_BYTE, ERROR)\
- val= GET_BYTE;\
- {\
- int ones= 7 - av_log2(val ^ 255);\
- if(ones==1)\
- ERROR\
- val&= 127>>ones;\
- while(--ones > 0){\
- int tmp= GET_BYTE - 128;\
- if(tmp>>6)\
- ERROR\
- val= (val<<6) + tmp;\
- }\
- }
-
-/*!
- * \def PUT_UTF8(val, tmp, PUT_BYTE)
- * converts a 32-bit unicode character to its utf-8 encoded form (up to 4 bytes long).
- * \param val is an input only argument and should be of type uint32_t. It holds
- * a ucs4 encoded unicode character that is to be converted to utf-8. If
- * val is given as a function it's executed only once.
- * \param tmp is a temporary variable and should be of type uint8_t. It
- * represents an intermediate value during conversion that is to be
- * outputted by PUT_BYTE.
- * \param PUT_BYTE writes the converted utf-8 bytes to any proper destination.
- * It could be a function or a statement, and uses tmp as the input byte.
- * For example, PUT_BYTE could be "*output++ = tmp;" PUT_BYTE will be
- * executed up to 4 times for values in the valid utf-8 range and up to
- * 7 times in the general case, depending on the length of the converted
- * unicode character.
- */
-#define PUT_UTF8(val, tmp, PUT_BYTE)\
- {\
- int bytes, shift;\
- uint32_t in = val;\
- if (in < 0x80) {\
- tmp = in;\
- PUT_BYTE\
- } else {\
- bytes = (av_log2(in) + 4) / 5;\
- shift = (bytes - 1) * 6;\
- tmp = (256 - (256 >> bytes)) | (in >> shift);\
- PUT_BYTE\
- while (shift >= 6) {\
- shift -= 6;\
- tmp = 0x80 | ((in >> shift) & 0x3f);\
- PUT_BYTE\
- }\
- }\
- }
-
-#if defined(ARCH_X86) || defined(ARCH_POWERPC)
-#if defined(ARCH_X86_64)
-static inline uint64_t read_time(void)
-{
- uint64_t a, d;
- asm volatile( "rdtsc\n\t"
- : "=a" (a), "=d" (d)
- );
- return (d << 32) | (a & 0xffffffff);
-}
-#elif defined(ARCH_X86_32)
-static inline long long read_time(void)
-{
- long long l;
- asm volatile( "rdtsc\n\t"
- : "=A" (l)
- );
- return l;
-}
-#else //FIXME check ppc64
-static inline uint64_t read_time(void)
-{
- uint32_t tbu, tbl, temp;
-
- /* from section 2.2.1 of the 32-bit PowerPC PEM */
- __asm__ __volatile__(
- "1:\n"
- "mftbu %2\n"
- "mftb %0\n"
- "mftbu %1\n"
- "cmpw %2,%1\n"
- "bne 1b\n"
- : "=r"(tbl), "=r"(tbu), "=r"(temp)
- :
- : "cc");
-
- return (((uint64_t)tbu)<<32) | (uint64_t)tbl;
-}
-#endif
-
-#define START_TIMER \
-uint64_t tend;\
-uint64_t tstart= read_time();\
-
-#define STOP_TIMER(id) \
-tend= read_time();\
-{\
- static uint64_t tsum=0;\
- static int tcount=0;\
- static int tskip_count=0;\
- if(tcount<2 || tend - tstart < FFMAX(8*tsum/tcount, 2000)){\
- tsum+= tend - tstart;\
- tcount++;\
- }else\
- tskip_count++;\
- if(((tcount+tskip_count)&(tcount+tskip_count-1))==0){\
- av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" dezicycles in %s, %d runs, %d skips\n", tsum*10/tcount, id, tcount, tskip_count);\
- }\
-}
-#else
-#define START_TIMER
-#define STOP_TIMER(id) {}
-#endif
-
-#endif /* COMMON_H */
projects / opencv / blobdiff