2003-03-06 12:32:04 +01:00
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/**
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* @file common.h
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2006-07-16 18:32:48 +02:00
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* common internal and external api header.
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2003-03-06 12:32:04 +01:00
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*/
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2001-07-22 16:18:56 +02:00
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#ifndef COMMON_H
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#define COMMON_H
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2004-01-25 12:13:56 +01:00
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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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2001-07-31 01:22:07 +02:00
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#ifdef HAVE_AV_CONFIG_H
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2001-08-13 23:48:05 +02:00
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/* only include the following when compiling package */
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2002-09-30 01:39:30 +02:00
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# include "config.h"
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# include <stdlib.h>
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# include <stdio.h>
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# include <string.h>
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2003-09-08 21:58:34 +02:00
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# include <ctype.h>
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2004-07-01 14:33:07 +02:00
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# include <limits.h>
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2002-09-30 01:39:30 +02:00
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# ifndef __BEOS__
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# include <errno.h>
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# else
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# include "berrno.h"
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# endif
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# include <math.h>
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2002-05-19 00:56:25 +02:00
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#endif /* HAVE_AV_CONFIG_H */
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2001-08-13 23:48:05 +02:00
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2002-07-04 15:41:27 +02:00
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/* Suppress restrict if it was not defined in config.h. */
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#ifndef restrict
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2002-09-30 01:39:30 +02:00
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# define restrict
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2002-07-04 15:41:27 +02:00
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#endif
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2004-04-26 11:43:55 +02:00
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#ifndef always_inline
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2002-07-13 21:31:15 +02:00
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#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
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2002-09-30 01:39:30 +02:00
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# define always_inline __attribute__((always_inline)) inline
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2002-07-13 21:31:15 +02:00
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#else
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2002-09-30 01:39:30 +02:00
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# define always_inline inline
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2002-07-13 21:31:15 +02:00
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#endif
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2004-04-26 11:43:55 +02:00
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#endif
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2002-07-13 21:31:15 +02:00
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2004-04-26 11:43:55 +02:00
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#ifndef attribute_used
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2004-02-29 23:10:18 +01:00
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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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2004-04-26 11:43:55 +02:00
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#endif
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2004-02-29 23:10:18 +01:00
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2005-02-24 20:08:50 +01:00
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#ifndef attribute_unused
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#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
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# define attribute_unused __attribute__((unused))
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#else
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# define attribute_unused
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#endif
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#endif
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2004-01-10 13:53:07 +01:00
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#ifndef EMULATE_INTTYPES
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2004-01-09 19:00:31 +01:00
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# include <inttypes.h>
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#else
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typedef signed char int8_t;
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typedef signed short int16_t;
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typedef signed int int32_t;
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typedef unsigned char uint8_t;
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typedef unsigned short uint16_t;
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typedef unsigned int uint32_t;
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2006-07-14 01:47:16 +02:00
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typedef signed long long int64_t;
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typedef unsigned long long uint64_t;
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2005-09-06 17:06:16 +02:00
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#endif /* EMULATE_INTTYPES */
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2004-01-09 19:00:31 +01:00
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2005-12-13 21:24:31 +01:00
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#ifndef PRId64
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#define PRId64 "lld"
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#endif
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2005-12-06 00:14:55 +01:00
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#ifndef PRIu64
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2005-12-13 21:24:31 +01:00
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#define PRIu64 "llu"
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#endif
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#ifndef PRIx64
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#define PRIx64 "llx"
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#endif
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#ifndef PRId32
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#define PRId32 "d"
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#endif
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#ifndef PRIdFAST16
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#define PRIdFAST16 PRId32
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#endif
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#ifndef PRIdFAST32
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#define PRIdFAST32 PRId32
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2005-12-06 00:14:55 +01:00
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#endif
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2004-10-24 15:20:32 +02:00
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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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2006-04-02 00:29:20 +02:00
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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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2004-10-24 15:20:32 +02:00
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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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2004-01-26 20:09:47 +01:00
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#ifndef INT64_MAX
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2004-02-28 17:41:23 +01:00
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#define INT64_MAX int64_t_C(9223372036854775807)
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2004-01-26 20:09:47 +01:00
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#endif
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2004-05-11 14:24:42 +02:00
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#ifndef UINT64_MAX
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#define UINT64_MAX uint64_t_C(0xFFFFFFFFFFFFFFFF)
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#endif
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2003-11-04 20:35:43 +01:00
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#ifdef EMULATE_FAST_INT
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typedef signed char int_fast8_t;
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typedef signed int int_fast16_t;
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typedef signed int int_fast32_t;
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typedef unsigned char uint_fast8_t;
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typedef unsigned int uint_fast16_t;
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typedef unsigned int uint_fast32_t;
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2005-06-07 16:12:15 +02:00
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typedef uint64_t uint_fast64_t;
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2003-11-04 20:35:43 +01:00
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#endif
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2004-06-25 16:11:44 +02:00
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#ifndef INT_BIT
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2004-07-01 14:33:07 +02:00
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# if INT_MAX != 2147483647
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2004-06-25 16:11:44 +02:00
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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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2006-07-14 02:25:58 +02:00
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#ifndef int64_t_C
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#define int64_t_C(c) (c ## LL)
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#define uint64_t_C(c) (c ## ULL)
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#endif
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2001-08-13 23:48:05 +02:00
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2006-01-30 01:22:41 +01:00
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#if defined(__MINGW32__) && !defined(BUILD_AVUTIL) && defined(BUILD_SHARED_AV)
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# define FF_IMPORT_ATTR __declspec(dllimport)
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#else
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# define FF_IMPORT_ATTR
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#endif
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2006-07-16 18:32:48 +02:00
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#ifdef HAVE_AV_CONFIG_H
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/* only include the following when compiling package */
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# include "internal.h"
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#endif
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2002-05-24 03:16:08 +02:00
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2002-10-16 21:55:49 +02:00
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//rounded divison & shift
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2004-04-23 01:15:24 +02:00
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#define RSHIFT(a,b) ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))
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2002-04-27 14:30:26 +02:00
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/* assume b>0 */
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#define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
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2002-05-04 20:58:07 +02:00
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#define ABS(a) ((a) >= 0 ? (a) : (-(a)))
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2002-11-01 21:37:10 +01:00
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2002-11-10 12:46:59 +01:00
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#define FFMAX(a,b) ((a) > (b) ? (a) : (b))
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#define FFMIN(a,b) ((a) > (b) ? (b) : (a))
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2002-04-27 14:30:26 +02:00
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2001-07-22 16:18:56 +02:00
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/* misc math functions */
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2006-01-30 01:22:41 +01:00
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extern FF_IMPORT_ATTR const uint8_t ff_log2_tab[256];
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2001-07-22 16:18:56 +02:00
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2001-11-10 15:36:12 +01:00
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static inline int av_log2(unsigned int v)
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2001-07-22 16:18:56 +02:00
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{
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int n;
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n = 0;
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if (v & 0xffff0000) {
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v >>= 16;
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n += 16;
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}
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if (v & 0xff00) {
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v >>= 8;
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n += 8;
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}
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2003-01-27 21:39:29 +01:00
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n += ff_log2_tab[v];
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return n;
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}
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static inline int av_log2_16bit(unsigned int v)
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{
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int n;
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n = 0;
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if (v & 0xff00) {
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v >>= 8;
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n += 8;
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2001-07-22 16:18:56 +02:00
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}
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2003-01-27 21:39:29 +01:00
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n += ff_log2_tab[v];
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2001-07-22 16:18:56 +02:00
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return n;
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}
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2002-03-22 03:21:17 +01:00
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/* median of 3 */
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static inline int mid_pred(int a, int b, int c)
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{
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2004-01-24 23:22:42 +01:00
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#if 0
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int t= (a-b)&((a-b)>>31);
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a-=t;
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b+=t;
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b-= (b-c)&((b-c)>>31);
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b+= (a-b)&((a-b)>>31);
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return b;
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#else
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if(a>b){
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if(c>b){
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if(c>a) b=a;
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else b=c;
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}
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}else{
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if(b>c){
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if(c>a) b=c;
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else b=a;
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}
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}
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return b;
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#endif
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2002-03-22 03:21:17 +01:00
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}
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2006-05-01 02:27:24 +02:00
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/**
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* clip a signed integer value into the amin-amax range
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* @param a value to clip
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* @param amin minimum value of the clip range
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* @param amax maximum value of the clip range
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* @return cliped value
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*/
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2002-04-19 05:25:20 +02:00
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static inline int clip(int a, int amin, int amax)
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{
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2006-07-09 12:56:39 +02:00
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if (a < amin) return amin;
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else if (a > amax) return amax;
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else return a;
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2002-04-19 05:25:20 +02:00
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}
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2006-05-01 02:27:24 +02:00
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/**
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* clip a signed integer value into the 0-255 range
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* @param a value to clip
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* @return cliped value
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*/
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2006-04-30 19:49:11 +02:00
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static inline uint8_t clip_uint8(int a)
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2004-03-20 01:18:52 +01:00
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{
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if (a&(~255)) return (-a)>>31;
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else return a;
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}
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2002-04-17 06:32:12 +02:00
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/* math */
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2003-03-12 16:16:19 +01:00
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int64_t ff_gcd(int64_t a, int64_t b);
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2002-04-17 06:32:12 +02:00
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2002-09-27 12:27:57 +02:00
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/**
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* converts fourcc string to int
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*/
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2002-11-14 20:04:40 +01:00
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static inline int ff_get_fourcc(const char *s){
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2006-07-16 18:32:48 +02:00
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#ifdef HAVE_AV_CONFIG_H
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2002-09-27 12:27:57 +02:00
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assert( strlen(s)==4 );
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2006-07-16 18:32:48 +02:00
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#endif
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2003-08-12 12:00:31 +02:00
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2002-09-27 12:27:57 +02:00
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return (s[0]) + (s[1]<<8) + (s[2]<<16) + (s[3]<<24);
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}
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2003-03-16 22:03:20 +01:00
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#define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24))
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#define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24))
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2006-07-08 00:43:32 +02:00
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#define GET_UTF8(val, GET_BYTE, ERROR)\
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val= GET_BYTE;\
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{\
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int ones= 7 - av_log2(val ^ 255);\
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if(ones==1)\
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ERROR\
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val&= 127>>ones;\
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while(--ones > 0){\
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int tmp= GET_BYTE - 128;\
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if(tmp>>6)\
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ERROR\
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val= (val<<6) + tmp;\
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}\
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}
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2002-09-30 00:44:22 +02:00
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2005-05-21 23:37:07 +02:00
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#if defined(ARCH_X86) || defined(ARCH_X86_64) || defined(ARCH_POWERPC)
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2005-04-18 13:24:20 +02:00
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#if defined(ARCH_X86_64)
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2005-05-21 23:37:07 +02:00
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static inline uint64_t read_time(void)
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2005-04-18 13:24:20 +02:00
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{
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2005-12-22 02:10:11 +01:00
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uint64_t a, d;
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asm volatile( "rdtsc\n\t"
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: "=a" (a), "=d" (d)
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);
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return (d << 32) | (a & 0xffffffff);
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2005-04-18 13:24:20 +02:00
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}
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2005-05-21 23:37:07 +02:00
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#elif defined(ARCH_X86)
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static inline long long read_time(void)
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2003-05-23 20:04:34 +02:00
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{
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2005-12-22 02:10:11 +01:00
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long long l;
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asm volatile( "rdtsc\n\t"
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: "=A" (l)
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);
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return l;
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2003-05-23 20:04:34 +02:00
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}
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2005-05-21 23:37:07 +02:00
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#else //FIXME check ppc64
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static inline uint64_t read_time(void)
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{
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uint32_t tbu, tbl, temp;
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/* from section 2.2.1 of the 32-bit PowerPC PEM */
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__asm__ __volatile__(
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"1:\n"
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"mftbu %2\n"
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"mftb %0\n"
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|
"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;
|
|
|
|
}
|
2005-04-18 13:24:20 +02:00
|
|
|
#endif
|
2003-05-23 20:04:34 +02:00
|
|
|
|
|
|
|
#define START_TIMER \
|
|
|
|
uint64_t tend;\
|
2005-05-21 23:37:07 +02:00
|
|
|
uint64_t tstart= read_time();\
|
2003-05-23 20:04:34 +02:00
|
|
|
|
|
|
|
#define STOP_TIMER(id) \
|
2005-05-21 23:37:07 +02:00
|
|
|
tend= read_time();\
|
2004-02-22 01:31:19 +01:00
|
|
|
{\
|
|
|
|
static uint64_t tsum=0;\
|
|
|
|
static int tcount=0;\
|
|
|
|
static int tskip_count=0;\
|
|
|
|
if(tcount<2 || tend - tstart < 8*tsum/tcount){\
|
|
|
|
tsum+= tend - tstart;\
|
|
|
|
tcount++;\
|
|
|
|
}else\
|
|
|
|
tskip_count++;\
|
|
|
|
if(256*256*256*64%(tcount+tskip_count)==0){\
|
2005-12-01 19:20:15 +01:00
|
|
|
av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" dezicycles in %s, %d runs, %d skips\n", tsum*10/tcount, id, tcount, tskip_count);\
|
2004-02-22 01:31:19 +01:00
|
|
|
}\
|
2003-05-23 20:04:34 +02:00
|
|
|
}
|
2004-07-26 17:52:55 +02:00
|
|
|
#else
|
2005-12-17 19:14:38 +01:00
|
|
|
#define START_TIMER
|
2004-07-26 17:52:55 +02:00
|
|
|
#define STOP_TIMER(id) {}
|
2003-05-23 20:04:34 +02:00
|
|
|
#endif
|
|
|
|
|
2006-07-19 09:28:58 +02:00
|
|
|
/* memory */
|
|
|
|
void *av_malloc(unsigned int size);
|
|
|
|
void *av_realloc(void *ptr, unsigned int size);
|
|
|
|
void av_free(void *ptr);
|
|
|
|
|
2002-06-11 15:38:54 +02:00
|
|
|
#endif /* COMMON_H */
|