Update of /cvsroot/audacity/lib-src/ffmpeg/libavutil
In directory sc8-pr-cvs11.sourceforge.net:/tmp/cvs-serv27433/libavutil
Added Files:
avutil.h common.h intfloat_readwrite.h log.h mathematics.h
mem.h rational.h
Log Message:
Sorry, i forgot to add FFmpeg headers. Here they are. Created in lib-src, as
suggested by Richard.
--- NEW FILE: mem.h ---
/*
* copyright (c) 2006 Michael Niedermayer <[EMAIL PROTECTED]>
*
* 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 mem.h
* Memory handling functions.
*/
#ifndef FFMPEG_MEM_H
#define FFMPEG_MEM_H
#ifdef __ICC
#define DECLARE_ALIGNED(n,t,v) t v __attribute__ ((aligned (n)))
#define DECLARE_ASM_CONST(n,t,v) const t __attribute__ ((aligned (n))) v
#elif defined(__GNUC__)
#define DECLARE_ALIGNED(n,t,v) t v __attribute__ ((aligned (n)))
#define DECLARE_ASM_CONST(n,t,v) static const t v attribute_used
__attribute__ ((aligned (n)))
#elif defined(_MSC_VER)
#define DECLARE_ALIGNED(n,t,v) __declspec(align(n)) t v
#define DECLARE_ASM_CONST(n,t,v) __declspec(align(n)) static const t v
#elif defined(HAVE_INLINE_ASM)
#error The asm code needs alignment, but we do not know how to do it for
this compiler.
#else
#define DECLARE_ALIGNED(n,t,v) t v
#define DECLARE_ASM_CONST(n,t,v) static const t v
#endif
#if defined(__GNUC__) && (__GNU__ > 3 || __GNU__ == 3 && __GNU_MINOR__ > 0)
#define av_malloc_attrib __attribute__((__malloc__))
#else
#define av_malloc_attrib
#endif
#if defined(__GNUC__) && (__GNU__ > 4 || __GNU__ == 4 && __GNU_MINOR__ > 1)
#define av_alloc_size(n) __attribute__((alloc_size(n)))
#else
#define av_alloc_size(n)
#endif
/**
* Allocate a block of \p size bytes with alignment suitable for all
* memory accesses (including vectors if available on the CPU).
* @param size Size in bytes for the memory block to be allocated.
* @return Pointer to the allocated block, NULL if it cannot allocate
* it.
* @see av_mallocz()
*/
void *av_malloc(unsigned int size) av_malloc_attrib av_alloc_size(1);
/**
* Allocate or reallocate a block of memory.
* If \p ptr is NULL and \p size > 0, allocate a new block. If \p
* size is zero, free the memory block pointed by \p ptr.
* @param size Size in bytes for the memory block to be allocated or
* reallocated.
* @param ptr Pointer to a memory block already allocated with
* av_malloc(z)() or av_realloc() or NULL.
* @return Pointer to a newly reallocated block or NULL if it cannot
* reallocate or the function is used to free the memory block.
* @see av_fast_realloc()
*/
void *av_realloc(void *ptr, unsigned int size) av_alloc_size(2);
/**
* Free a memory block which has been allocated with av_malloc(z)() or
* av_realloc().
* @param ptr Pointer to the memory block which should be freed.
* @note ptr = NULL is explicitly allowed.
* @note It is recommended that you use av_freep() instead.
* @see av_freep()
*/
void av_free(void *ptr);
/**
* Allocate a block of \p size bytes with alignment suitable for all
* memory accesses (including vectors if available on the CPU) and
* set to zeroes all the bytes of the block.
* @param size Size in bytes for the memory block to be allocated.
* @return Pointer to the allocated block, NULL if it cannot allocate
* it.
* @see av_malloc()
*/
void *av_mallocz(unsigned int size) av_malloc_attrib av_alloc_size(1);
/**
* Duplicate the string \p s.
* @param s String to be duplicated.
* @return Pointer to a newly allocated string containing a
* copy of \p s or NULL if it cannot be allocated.
*/
char *av_strdup(const char *s) av_malloc_attrib;
/**
* Free a memory block which has been allocated with av_malloc(z)() or
* av_realloc() and set to NULL the pointer to it.
* @param ptr Pointer to the pointer to the memory block which should
* be freed.
* @see av_free()
*/
void av_freep(void *ptr);
#endif /* FFMPEG_MEM_H */
--- NEW FILE: common.h ---
/*
* copyright (c) 2006 Michael Niedermayer <[EMAIL PROTECTED]>
*
* 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 FFMPEG_COMMON_H
#define FFMPEG_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
#else
# define av_always_inline inline
#endif
#endif
#ifndef av_noinline
#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
# define av_noinline __attribute__((noinline))
#else
# define av_noinline
#endif
#endif
#ifndef av_pure
#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
# define av_pure __attribute__((pure))
#else
# define av_pure
#endif
#endif
#ifndef av_const
#if defined(__GNUC__) && (__GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ > 5)
# define av_const __attribute__((const))
#else
# define av_const
#endif
#endif
#ifndef av_cold
#if defined(__GNUC__) && (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ > 2)
# define av_cold __attribute__((cold))
#else
# define av_cold
#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
#ifndef av_unused
#if defined(__GNUC__)
# define av_unused __attribute__((unused))
#else
# define av_unused
#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 FFMAX3(a,b,c) FFMAX(FFMAX(a,b),c)
#define FFMIN(a,b) ((a) > (b) ? (b) : (a))
#define FFMIN3(a,b,c) FFMIN(FFMIN(a,b),c)
#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 av_const int av_log2(unsigned int v)
{
int 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 av_const int av_log2_16bit(unsigned int v)
{
int n = 0;
if (v & 0xff00) {
v >>= 8;
n += 8;
}
n += ff_log2_tab[v];
return n;
}
/* median of 3 */
static inline av_const 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 av_const 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 av_const uint8_t av_clip_uint8(int a)
{
if (a&(~255)) return (-a)>>31;
else return a;
}
/**
* clip a signed integer value into the -32768,32767 range
* @param a value to clip
* @return clipped value
*/
static inline av_const int16_t av_clip_int16(int a)
{
if ((a+32768) & ~65535) return (a>>31) ^ 32767;
else return a;
}
/* math */
int64_t av_const ff_gcd(int64_t a, int64_t b);
/**
* converts fourcc string to int
*/
static inline av_pure 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) || defined(ARCH_BFIN)
#define AV_READ_TIME read_time
#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;
}
#elif ARCH_BFIN
static inline uint64_t read_time(void)
{
union {
struct {
unsigned lo;
unsigned hi;
} p;
unsigned long long c;
} t;
asm volatile ("%0=cycles; %1=cycles2;" : "=d" (t.p.lo), "=d" (t.p.hi));
return t.c;
}
#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
#elif defined(HAVE_GETHRTIME)
#define AV_READ_TIME gethrtime
#endif
#ifdef AV_READ_TIME
#define START_TIMER \
uint64_t tend;\
uint64_t tstart= AV_READ_TIME();\
#define STOP_TIMER(id) \
tend= AV_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 /* FFMPEG_COMMON_H */
--- NEW FILE: mathematics.h ---
/*
* copyright (c) 2005 Michael Niedermayer <[EMAIL PROTECTED]>
*
* 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
*/
#ifndef FFMPEG_MATHEMATICS_H
#define FFMPEG_MATHEMATICS_H
#include <stdint.h>
#include "rational.h"
enum AVRounding {
AV_ROUND_ZERO = 0, ///< round toward zero
AV_ROUND_INF = 1, ///< round away from zero
AV_ROUND_DOWN = 2, ///< round toward -infinity
AV_ROUND_UP = 3, ///< round toward +infinity
AV_ROUND_NEAR_INF = 5, ///< round to nearest and halfway cases away from
zero
};
/**
* rescale a 64bit integer with rounding to nearest.
* a simple a*b/c isn't possible as it can overflow
*/
int64_t av_rescale(int64_t a, int64_t b, int64_t c) av_const;
/**
* rescale a 64bit integer with specified rounding.
* a simple a*b/c isn't possible as it can overflow
*/
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding)
av_const;
/**
* rescale a 64bit integer by 2 rational numbers.
*/
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq) av_const;
#endif /* FFMPEG_MATHEMATICS_H */
--- NEW FILE: log.h ---
/*
* copyright (c) 2006 Michael Niedermayer <[EMAIL PROTECTED]>
*
* 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
*/
#ifndef FFMPEG_LOG_H
#define FFMPEG_LOG_H
#include <stdarg.h>
/**
* Describes the class of an AVClass context structure, that is an
* arbitrary struct of which the first field is a pointer to an
* AVClass struct (e.g. AVCodecContext, AVFormatContext etc.).
*/
typedef struct AVCLASS AVClass;
struct AVCLASS {
/**
* The name of the class; usually it is the same name as the
* context structure type to which the AVClass is associated.
*/
const char* class_name;
/**
* a pointer to a function which returns the name of a context
* instance \p ctx associated with the class
*/
const char* (*item_name)(void* ctx);
/**
* a pointer to the first option specified in the class if any or NULL
*
* @see av_set_default_options()
*/
const struct AVOption *option;
};
/* av_log API */
#if LIBAVUTIL_VERSION_INT < (50<<16)
#define AV_LOG_QUIET -1
#define AV_LOG_FATAL 0
#define AV_LOG_ERROR 0
#define AV_LOG_WARNING 1
#define AV_LOG_INFO 1
#define AV_LOG_VERBOSE 1
#define AV_LOG_DEBUG 2
#else
#define AV_LOG_QUIET -8
/**
* something went really wrong and we will crash now
*/
#define AV_LOG_PANIC 0
/**
* something went wrong and recovery is not possible
* like no header in a format which depends on it or a combination
* of parameters which are not allowed
*/
#define AV_LOG_FATAL 8
/**
* something went wrong and cannot losslessly be recovered
* but not all future data is affected
*/
#define AV_LOG_ERROR 16
/**
* something somehow does not look correct / something which may or may not
* lead to some problems like use of -vstrict -2
*/
#define AV_LOG_WARNING 24
#define AV_LOG_INFO 32
#define AV_LOG_VERBOSE 40
/**
* stuff which is only useful for libav* developers
*/
#define AV_LOG_DEBUG 48
#endif
#if LIBAVUTIL_VERSION_INT < (50<<16)
extern int av_log_level;
#endif
/**
* Send the specified message to the log if the level is less than or equal to
* the current av_log_level. By default, all logging messages are sent to
* stderr. This behavior can be altered by setting a different av_vlog callback
* function.
*
* @param avcl A pointer to an arbitrary struct of which the first field is a
* pointer to an AVClass struct.
* @param level The importance level of the message, lower values signifying
* higher importance.
* @param fmt The format string (printf-compatible) that specifies how
* subsequent arguments are converted to output.
* @see av_vlog
*/
#ifdef __GNUC__
void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__
(__printf__, 3, 4)));
#else
void av_log(void*, int level, const char *fmt, ...);
#endif
void av_vlog(void*, int level, const char *fmt, va_list);
int av_log_get_level(void);
void av_log_set_level(int);
void av_log_set_callback(void (*)(void*, int, const char*, va_list));
void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl);
#endif /* FFMPEG_LOG_H */
--- NEW FILE: intfloat_readwrite.h ---
/*
* copyright (c) 2005 Michael Niedermayer <[EMAIL PROTECTED]>
*
* 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
*/
#ifndef FFMPEG_INTFLOAT_READWRITE_H
#define FFMPEG_INTFLOAT_READWRITE_H
#include <stdint.h>
#include "common.h"
/* IEEE 80 bits extended float */
typedef struct AVExtFloat {
uint8_t exponent[2];
uint8_t mantissa[8];
} AVExtFloat;
double av_int2dbl(int64_t v) av_const;
float av_int2flt(int32_t v) av_const;
double av_ext2dbl(const AVExtFloat ext) av_const;
int64_t av_dbl2int(double d) av_const;
int32_t av_flt2int(float d) av_const;
AVExtFloat av_dbl2ext(double d) av_const;
#endif /* FFMPEG_INTFLOAT_READWRITE_H */
--- NEW FILE: rational.h ---
/*
* Rational numbers
* Copyright (c) 2003 Michael Niedermayer <[EMAIL PROTECTED]>
*
* 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 rational.h
* Rational numbers.
* @author Michael Niedermayer <[EMAIL PROTECTED]>
*/
#ifndef FFMPEG_RATIONAL_H
#define FFMPEG_RATIONAL_H
#include <stdint.h>
#include "common.h"
/**
* Rational number num/den.
*/
typedef struct AVRational{
int num; ///< numerator
int den; ///< denominator
} AVRational;
/**
* Compare two rationals.
* @param a first rational
* @param b second rational
* @return 0 if a==b, 1 if a>b and -1 if a<b.
*/
static inline int av_cmp_q(AVRational a, AVRational b){
const int64_t tmp= a.num * (int64_t)b.den - b.num * (int64_t)a.den;
if(tmp) return (tmp>>63)|1;
else return 0;
}
/**
* Rational to double conversion.
* @param a rational to convert
* @return (double) a
*/
static inline double av_q2d(AVRational a){
return a.num / (double) a.den;
}
/**
* Reduce a fraction.
* This is useful for framerate calculations.
* @param dst_nom destination numerator
* @param dst_den destination denominator
* @param nom source numerator
* @param den source denominator
* @param max the maximum allowed for dst_nom & dst_den
* @return 1 if exact, 0 otherwise
*/
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t
max);
/**
* Multiplies two rationals.
* @param b first rational.
* @param c second rational.
* @return b*c.
*/
AVRational av_mul_q(AVRational b, AVRational c) av_const;
/**
* Divides one rational by another.
* @param b first rational.
* @param c second rational.
* @return b/c.
*/
AVRational av_div_q(AVRational b, AVRational c) av_const;
/**
* Adds two rationals.
* @param b first rational.
* @param c second rational.
* @return b+c.
*/
AVRational av_add_q(AVRational b, AVRational c) av_const;
/**
* Subtracts one rational from another.
* @param b first rational.
* @param c second rational.
* @return b-c.
*/
AVRational av_sub_q(AVRational b, AVRational c) av_const;
/**
* Converts a double precision floating point number to a rational.
* @param d double to convert
* @param max the maximum allowed numerator and denominator
* @return (AVRational) d.
*/
AVRational av_d2q(double d, int max) av_const;
#endif /* FFMPEG_RATIONAL_H */
--- NEW FILE: avutil.h ---
/*
* copyright (c) 2006 Michael Niedermayer <[EMAIL PROTECTED]>
*
* 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
*/
#ifndef FFMPEG_AVUTIL_H
#define FFMPEG_AVUTIL_H
/**
* @file avutil.h
* external API header
*/
#define AV_STRINGIFY(s) AV_TOSTRING(s)
#define AV_TOSTRING(s) #s
#define AV_VERSION_INT(a, b, c) (a<<16 | b<<8 | c)
#define AV_VERSION_DOT(a, b, c) a ##.## b ##.## c
#define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
#define LIBAVUTIL_VERSION_MAJOR 49
#define LIBAVUTIL_VERSION_MINOR 6
#define LIBAVUTIL_VERSION_MICRO 0
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
LIBAVUTIL_VERSION_MINOR, \
LIBAVUTIL_VERSION_MICRO)
#define LIBAVUTIL_VERSION AV_VERSION(LIBAVUTIL_VERSION_MAJOR, \
LIBAVUTIL_VERSION_MINOR, \
LIBAVUTIL_VERSION_MICRO)
#define LIBAVUTIL_BUILD LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_IDENT "Lavu" AV_STRINGIFY(LIBAVUTIL_VERSION)
#include "common.h"
#include "mathematics.h"
#include "rational.h"
#include "intfloat_readwrite.h"
#include "log.h"
/**
* Pixel format. Notes:
*
* PIX_FMT_RGB32 is handled in an endian-specific manner. A RGBA
* color is put together as:
* (A << 24) | (R << 16) | (G << 8) | B
* This is stored as BGRA on little endian CPU architectures and ARGB on
* big endian CPUs.
*
* When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
* image data is stored in AVFrame.data[0]. The palette is transported in
* AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
* formatted the same as in PIX_FMT_RGB32 described above (i.e., it is
* also endian-specific). Note also that the individual RGB palette
* components stored in AVFrame.data[1] should be in the range 0..255.
* This is important as many custom PAL8 video codecs that were designed
* to run on the IBM VGA graphics adapter use 6-bit palette components.
*/
enum PixelFormat {
PIX_FMT_NONE= -1,
PIX_FMT_YUV420P, ///< Planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2
Y samples)
PIX_FMT_YUYV422, ///< Packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
PIX_FMT_RGB24, ///< Packed RGB 8:8:8, 24bpp, RGBRGB...
PIX_FMT_BGR24, ///< Packed RGB 8:8:8, 24bpp, BGRBGR...
PIX_FMT_YUV422P, ///< Planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1
Y samples)
PIX_FMT_YUV444P, ///< Planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1
Y samples)
PIX_FMT_RGB32, ///< Packed RGB 8:8:8, 32bpp, (msb)8A 8R 8G 8B(lsb), in
cpu endianness
PIX_FMT_YUV410P, ///< Planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4
Y samples)
PIX_FMT_YUV411P, ///< Planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1
Y samples)
PIX_FMT_RGB565, ///< Packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), in
cpu endianness
PIX_FMT_RGB555, ///< Packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), in
cpu endianness most significant bit to 0
PIX_FMT_GRAY8, ///< Y , 8bpp
PIX_FMT_MONOWHITE, ///< Y , 1bpp, 0 is white, 1 is black
PIX_FMT_MONOBLACK, ///< Y , 1bpp, 0 is black, 1 is white
PIX_FMT_PAL8, ///< 8 bit with PIX_FMT_RGB32 palette
PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0, 12bpp, full scale (jpeg)
PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2, 16bpp, full scale (jpeg)
PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4, 24bpp, full scale (jpeg)
PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet
passing(xvmc_render.h)
PIX_FMT_XVMC_MPEG2_IDCT,
PIX_FMT_UYVY422, ///< Packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
PIX_FMT_UYYVYY411, ///< Packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3
PIX_FMT_BGR32, ///< Packed RGB 8:8:8, 32bpp, (msb)8A 8B 8G 8R(lsb), in
cpu endianness
PIX_FMT_BGR565, ///< Packed RGB 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), in
cpu endianness
PIX_FMT_BGR555, ///< Packed RGB 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), in
cpu endianness most significant bit to 1
PIX_FMT_BGR8, ///< Packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
PIX_FMT_BGR4, ///< Packed RGB 1:2:1, 4bpp, (msb)1B 2G 1R(lsb)
PIX_FMT_BGR4_BYTE, ///< Packed RGB 1:2:1, 8bpp, (msb)1B 2G 1R(lsb)
PIX_FMT_RGB8, ///< Packed RGB 3:3:2, 8bpp, (msb)2R 3G 3B(lsb)
PIX_FMT_RGB4, ///< Packed RGB 1:2:1, 4bpp, (msb)2R 3G 3B(lsb)
PIX_FMT_RGB4_BYTE, ///< Packed RGB 1:2:1, 8bpp, (msb)2R 3G 3B(lsb)
PIX_FMT_NV12, ///< Planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 for UV
PIX_FMT_NV21, ///< as above, but U and V bytes are swapped
PIX_FMT_RGB32_1, ///< Packed RGB 8:8:8, 32bpp, (msb)8R 8G 8B 8A(lsb), in
cpu endianness
PIX_FMT_BGR32_1, ///< Packed RGB 8:8:8, 32bpp, (msb)8B 8G 8R 8A(lsb), in
cpu endianness
PIX_FMT_GRAY16BE, ///< Y , 16bpp, big-endian
PIX_FMT_GRAY16LE, ///< Y , 16bpp, little-endian
PIX_FMT_YUV440P, ///< Planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y
samples)
PIX_FMT_YUVJ440P, ///< Planar YUV 4:4:0 full scale (jpeg)
PIX_FMT_YUVA420P, ///< Planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2
Y & A samples)
PIX_FMT_NB, ///< number of pixel formats, DO NOT USE THIS if you
want to link with shared libav* because the number of formats might differ
between versions
};
#ifdef WORDS_BIGENDIAN
#define PIX_FMT_RGBA PIX_FMT_RGB32_1
#define PIX_FMT_BGRA PIX_FMT_BGR32_1
#define PIX_FMT_ARGB PIX_FMT_RGB32
#define PIX_FMT_ABGR PIX_FMT_BGR32
#define PIX_FMT_GRAY16 PIX_FMT_GRAY16BE
#else
#define PIX_FMT_RGBA PIX_FMT_BGR32
#define PIX_FMT_BGRA PIX_FMT_RGB32
#define PIX_FMT_ARGB PIX_FMT_BGR32_1
#define PIX_FMT_ABGR PIX_FMT_RGB32_1
#define PIX_FMT_GRAY16 PIX_FMT_GRAY16LE
#endif
#if LIBAVUTIL_VERSION_INT < (50<<16)
#define PIX_FMT_UYVY411 PIX_FMT_UYYVYY411
#define PIX_FMT_RGBA32 PIX_FMT_RGB32
#define PIX_FMT_YUV422 PIX_FMT_YUYV422
#endif
#endif /* FFMPEG_AVUTIL_H */
-------------------------------------------------------------------------
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