+/*
+ * 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 api header.
+ * common internal and external api header.
*/
#ifndef COMMON_H
#define COMMON_H
-#if defined(WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__)
-# define CONFIG_WIN32
-#endif
-
-#if defined(WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__) && !defined(EMULATE_INTTYPES)
-# define EMULATE_INTTYPES
-#endif
-
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
+#include <inttypes.h>
#ifdef HAVE_AV_CONFIG_H
/* only include the following when compiling package */
# include "berrno.h"
# endif
# include <math.h>
-
-# ifndef ENODATA
-# define ENODATA 61
-# endif
-
-#include <stddef.h>
-#ifndef offsetof
-# define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F))
-#endif
-
-#define AVOPTION_CODEC_BOOL(name, help, field) \
- { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_BOOL }
-#define AVOPTION_CODEC_DOUBLE(name, help, field, minv, maxv, defval) \
- { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_DOUBLE, minv, maxv, defval }
-#define AVOPTION_CODEC_FLAG(name, help, field, flag, defval) \
- { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_FLAG, flag, 0, defval }
-#define AVOPTION_CODEC_INT(name, help, field, minv, maxv, defval) \
- { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_INT, minv, maxv, defval }
-#define AVOPTION_CODEC_STRING(name, help, field, str, val) \
- { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_STRING, .defval = val, .defstr = str }
-#define AVOPTION_CODEC_RCOVERRIDE(name, help, field) \
- { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_RCOVERRIDE, .defval = 0, .defstr = NULL }
-#define AVOPTION_SUB(ptr) { .name = NULL, .help = (const char*)ptr }
-#define AVOPTION_END() AVOPTION_SUB(NULL)
-
#endif /* HAVE_AV_CONFIG_H */
-/* Suppress restrict if it was not defined in config.h. */
-#ifndef restrict
-# define restrict
-#endif
-
-#ifndef always_inline
-#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
-# define always_inline __attribute__((always_inline)) inline
-#else
-# define always_inline inline
-#endif
-#endif
-
-#ifndef attribute_used
+#ifndef av_always_inline
#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
-# define attribute_used __attribute__((used))
+# define av_always_inline __attribute__((always_inline)) inline
#else
-# define attribute_used
+# define av_always_inline inline
#endif
#endif
-#ifndef attribute_unused
-#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
-# define attribute_unused __attribute__((unused))
-#else
-# define attribute_unused
-#endif
-#endif
-
-#ifndef EMULATE_INTTYPES
-# include <inttypes.h>
-#else
- typedef signed char int8_t;
- typedef signed short int16_t;
- typedef signed int int32_t;
- typedef unsigned char uint8_t;
- typedef unsigned short uint16_t;
- typedef unsigned int uint32_t;
-
-# ifdef CONFIG_WIN32
- typedef signed __int64 int64_t;
- typedef unsigned __int64 uint64_t;
-# else /* other OS */
- typedef signed long long int64_t;
- typedef unsigned long long uint64_t;
-# endif /* other OS */
-#endif /* EMULATE_INTTYPES */
-
-#ifndef PRId64
-#define PRId64 "lld"
-#endif
-
-#ifndef PRIu64
-#define PRIu64 "llu"
-#endif
-
-#ifndef PRIx64
-#define PRIx64 "llx"
-#endif
-
-#ifndef PRId32
-#define PRId32 "d"
-#endif
-
-#ifndef PRIdFAST16
-#define PRIdFAST16 PRId32
-#endif
-
-#ifndef PRIdFAST32
-#define PRIdFAST32 PRId32
-#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_t_C(9223372036854775807)
-#endif
-
-#ifndef UINT64_MAX
-#define UINT64_MAX uint64_t_C(0xFFFFFFFFFFFFFFFF)
-#endif
-
-#ifdef EMULATE_FAST_INT
-typedef signed char int_fast8_t;
-typedef signed int int_fast16_t;
-typedef signed int int_fast32_t;
-typedef unsigned char uint_fast8_t;
-typedef unsigned int uint_fast16_t;
-typedef unsigned int uint_fast32_t;
-typedef uint64_t uint_fast64_t;
-#endif
-
-#ifndef INT_BIT
-# if INT_MAX != 2147483647
-# define INT_BIT 64
-# else
-# define INT_BIT 32
-# endif
-#endif
-
-#if defined(CONFIG_OS2) || defined(CONFIG_SUNOS)
-static inline float floorf(float f) {
- return floor(f);
-}
-#endif
-
-#ifdef CONFIG_WIN32
-
-/* windows */
-
-# if !defined(__MINGW32__) && !defined(__CYGWIN__)
-# define int64_t_C(c) (c ## i64)
-# define uint64_t_C(c) (c ## i64)
-
-# ifdef HAVE_AV_CONFIG_H
-# define inline __inline
-# endif
-
-# else
-# define int64_t_C(c) (c ## LL)
-# define uint64_t_C(c) (c ## ULL)
-# endif /* __MINGW32__ */
-
-# ifdef HAVE_AV_CONFIG_H
-# ifdef _DEBUG
-# define DEBUG
-# endif
-
-# define snprintf _snprintf
-# define vsnprintf _vsnprintf
-
-# ifdef CONFIG_WINCE
-# define perror(a)
-# endif
-
-# endif
-
-/* CONFIG_WIN32 end */
-#elif defined (CONFIG_OS2)
-/* OS/2 EMX */
-
-#ifndef int64_t_C
-#define int64_t_C(c) (c ## LL)
-#define uint64_t_C(c) (c ## ULL)
-#endif
-
#ifdef HAVE_AV_CONFIG_H
-
-#ifdef USE_FASTMEMCPY
-#include "fastmemcpy.h"
-#endif
-
-#include <float.h>
-
+# include "internal.h"
#endif /* HAVE_AV_CONFIG_H */
-/* CONFIG_OS2 end */
+#ifndef attribute_deprecated
+#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
+# define attribute_deprecated __attribute__((deprecated))
#else
-
-/* unix */
-
-#ifndef int64_t_C
-#define int64_t_C(c) (c ## LL)
-#define uint64_t_C(c) (c ## ULL)
+# define attribute_deprecated
#endif
-
-#ifdef HAVE_AV_CONFIG_H
-
-# ifdef USE_FASTMEMCPY
-# include "fastmemcpy.h"
-# endif
-# endif /* HAVE_AV_CONFIG_H */
-
-#endif /* !CONFIG_WIN32 && !CONFIG_OS2 */
-
-#ifdef HAVE_AV_CONFIG_H
-
-#if defined(__MINGW32__) && !defined(BUILD_AVUTIL) && defined(BUILD_SHARED_AV)
-# define FF_IMPORT_ATTR __declspec(dllimport)
-#else
-# define FF_IMPORT_ATTR
#endif
-
-# include "bswap.h"
-
-// Use rip-relative addressing if compiling PIC code on x86-64.
-# if defined(__MINGW32__) || defined(__CYGWIN__) || \
- defined(__OS2__) || (defined (__OpenBSD__) && !defined(__ELF__))
-# if defined(ARCH_X86_64) && defined(PIC)
-# define MANGLE(a) "_" #a"(%%rip)"
-# else
-# define MANGLE(a) "_" #a
-# endif
-# else
-# if defined(ARCH_X86_64) && defined(PIC)
-# define MANGLE(a) #a"(%%rip)"
-# elif defined(CONFIG_DARWIN)
-# define MANGLE(a) "_" #a
-# else
-# define MANGLE(a) #a
-# endif
-# endif
-
-/* debug stuff */
-
-# ifndef DEBUG
-# define NDEBUG
-# endif
-# include <assert.h>
-
-/* dprintf macros */
-# if defined(CONFIG_WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__)
-
-inline void dprintf(const char* fmt,...) {}
-
-# else
-
-# ifdef DEBUG
-# define dprintf(fmt,...) av_log(NULL, AV_LOG_DEBUG, fmt, __VA_ARGS__)
-# else
-# define dprintf(fmt,...)
-# endif
-
-# endif /* !CONFIG_WIN32 */
-# ifdef CONFIG_WINCE
-# define abort()
-# endif
-
-# define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0)
+#ifndef INT64_C
+#define INT64_C(c) (c ## LL)
+#define UINT64_C(c) (c ## ULL)
+#endif
//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 ABS(a) ((a) >= 0 ? (a) : (-(a)))
+#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))
-extern const uint32_t inverse[256];
-
-#if defined(ARCH_X86) || defined(ARCH_X86_64)
-# define FASTDIV(a,b) \
- ({\
- int ret,dmy;\
- asm volatile(\
- "mull %3"\
- :"=d"(ret),"=a"(dmy)\
- :"1"(a),"g"(inverse[b])\
- );\
- ret;\
- })
-#elif defined(CONFIG_FASTDIV)
-# define FASTDIV(a,b) ((uint32_t)((((uint64_t)a)*inverse[b])>>32))
-#else
-# define FASTDIV(a,b) ((a)/(b))
-#endif
-
-/* define it to include statistics code (useful only for optimizing
- codec efficiency */
-//#define STATS
-
-#ifdef STATS
-
-enum {
- ST_UNKNOWN,
- ST_DC,
- ST_INTRA_AC,
- ST_INTER_AC,
- ST_INTRA_MB,
- ST_INTER_MB,
- ST_MV,
- ST_NB,
-};
-
-extern int st_current_index;
-extern unsigned int st_bit_counts[ST_NB];
-extern unsigned int st_out_bit_counts[ST_NB];
-
-void print_stats(void);
-#endif
+#define FFSWAP(type,a,b) do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)
/* misc math functions */
-extern FF_IMPORT_ATTR const uint8_t ff_log2_tab[256];
+extern const uint8_t ff_log2_tab[256];
static inline int av_log2(unsigned int v)
{
/* median of 3 */
static inline int mid_pred(int a, int b, int c)
{
-#if 0
+#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;
#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 clip(int a, int amin, int amax)
{
- if (a < amin)
- return amin;
- else if (a > amax)
- return amax;
- else
- return a;
+ if (a < amin) return amin;
+ else if (a > amax) return amax;
+ else return a;
}
-static inline int clip_uint8(int a)
+/**
+ * clip a signed integer value into the 0-255 range
+ * @param a value to clip
+ * @return clipped value
+ */
+static inline uint8_t clip_uint8(int a)
{
if (a&(~255)) return (-a)>>31;
else return a;
}
/* math */
-extern FF_IMPORT_ATTR const uint8_t ff_sqrt_tab[128];
-
int64_t ff_gcd(int64_t a, int64_t b);
-static inline int ff_sqrt(int a)
-{
- int ret=0;
- int s;
- int ret_sq=0;
-
- if(a<128) return ff_sqrt_tab[a];
-
- for(s=15; s>=0; s--){
- int b= ret_sq + (1<<(s*2)) + (ret<<s)*2;
- if(b<=a){
- ret_sq=b;
- ret+= 1<<s;
- }
- }
- return ret;
-}
-
/**
* 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;\
+ }\
+ }
-#if defined(ARCH_X86) || defined(ARCH_X86_64)
-#define MASK_ABS(mask, level)\
- asm volatile(\
- "cdq \n\t"\
- "xorl %1, %0 \n\t"\
- "subl %1, %0 \n\t"\
- : "+a" (level), "=&d" (mask)\
- );
-#else
-#define MASK_ABS(mask, level)\
- mask= level>>31;\
- level= (level^mask)-mask;
-#endif
-
-
-#if __CPU__ >= 686 && !defined(RUNTIME_CPUDETECT)
-#define COPY3_IF_LT(x,y,a,b,c,d)\
-asm volatile (\
- "cmpl %0, %3 \n\t"\
- "cmovl %3, %0 \n\t"\
- "cmovl %4, %1 \n\t"\
- "cmovl %5, %2 \n\t"\
- : "+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
+/*!
+ * \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_X86_64) || defined(ARCH_POWERPC)
+#if defined(ARCH_X86) || defined(ARCH_POWERPC)
#if defined(ARCH_X86_64)
static inline uint64_t read_time(void)
{
);
return (d << 32) | (a & 0xffffffff);
}
-#elif defined(ARCH_X86)
+#elif defined(ARCH_X86_32)
static inline long long read_time(void)
{
long long l;
tcount++;\
}else\
tskip_count++;\
- if(256*256*256*64%(tcount+tskip_count)==0){\
+ 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);\
}\
}
#define STOP_TIMER(id) {}
#endif
-/* avoid usage of various functions */
-#define malloc please_use_av_malloc
-#define free please_use_av_free
-#define realloc please_use_av_realloc
-#define time time_is_forbidden_due_to_security_issues
-#define rand rand_is_forbidden_due_to_state_trashing
-#define srand srand_is_forbidden_due_to_state_trashing
-#define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
-#define strcat strcat_is_forbidden_due_to_security_issues_use_pstrcat
-#if !(defined(LIBAVFORMAT_BUILD) || defined(_FRAMEHOOK_H))
-#define printf please_use_av_log
-#define fprintf please_use_av_log
-#endif
+/* memory */
-#define CHECKED_ALLOCZ(p, size)\
-{\
- p= av_mallocz(size);\
- if(p==NULL && (size)!=0){\
- perror("malloc");\
- goto fail;\
- }\
-}
-
-#ifndef HAVE_LRINTF
-/* XXX: add ISOC specific test to avoid specific BSD testing. */
-/* better than nothing implementation. */
-/* btw, rintf() is existing on fbsd too -- alex */
-static always_inline long int lrintf(float x)
-{
-#ifdef CONFIG_WIN32
-# ifdef ARCH_X86
- int32_t i;
- asm volatile(
- "fistpl %0\n\t"
- : "=m" (i) : "t" (x) : "st"
- );
- return i;
-# else
- /* XXX: incorrect, but make it compile */
- return (int)(x + (x < 0 ? -0.5 : 0.5));
-# endif /* ARCH_X86 */
+#ifdef __GNUC__
+ #define DECLARE_ALIGNED(n,t,v) t v __attribute__ ((aligned (n)))
#else
- return (int)(rint(x));
-#endif /* CONFIG_WIN32 */
-}
-#else
-#ifndef _ISOC9X_SOURCE
-#define _ISOC9X_SOURCE
+ #define DECLARE_ALIGNED(n,t,v) __declspec(align(n)) t v
#endif
-#include <math.h>
-#endif /* HAVE_LRINTF */
-#endif /* HAVE_AV_CONFIG_H */
+/* memory */
+void *av_malloc(unsigned int size);
+void *av_realloc(void *ptr, unsigned int size);
+void av_free(void *ptr);
+
+void *av_mallocz(unsigned int size);
+char *av_strdup(const char *s);
+void av_freep(void *ptr);
#endif /* COMMON_H */