/**
* @file common.h
- * common internal and external api header.
+ * common internal and external API header
*/
-#ifndef COMMON_H
-#define COMMON_H
+#ifndef FFMPEG_COMMON_H
+#define FFMPEG_COMMON_H
-#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 <string.h>
# include <ctype.h>
# include <limits.h>
-# ifndef __BEOS__
-# include <errno.h>
-# else
-# include "berrno.h"
-# endif
+# include <errno.h>
# include <math.h>
#endif /* HAVE_AV_CONFIG_H */
-/* Suppress restrict if it was not defined in config.h. */
-#ifndef restrict
-# define restrict
-#endif
-
-#ifndef always_inline
+#ifndef av_always_inline
#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
-# define always_inline __attribute__((always_inline)) inline
+# define av_always_inline __attribute__((always_inline)) inline
#else
-# define always_inline inline
+# define av_always_inline inline
#endif
#endif
-#ifndef attribute_used
+#ifndef av_noinline
#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
-# define attribute_used __attribute__((used))
+# define av_noinline __attribute__((noinline))
#else
-# define attribute_used
+# define av_noinline
#endif
#endif
-#ifndef attribute_unused
+#ifndef av_pure
#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
-# define attribute_unused __attribute__((unused))
+# define av_pure __attribute__((pure))
#else
-# define attribute_unused
+# define av_pure
#endif
#endif
-#ifndef attribute_deprecated
-#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
-# define attribute_deprecated __attribute__((deprecated))
+#ifndef av_const
+#if defined(__GNUC__) && (__GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ > 5)
+# define av_const __attribute__((const))
#else
-# define attribute_deprecated
-#endif
-#endif
-
-# include <inttypes.h>
-
-#ifndef PRId64
-#define PRId64 "lld"
-#endif
-
-#ifndef PRIu64
-#define PRIu64 "llu"
-#endif
-
-#ifndef PRIx64
-#define PRIx64 "llx"
-#endif
-
-#ifndef PRIX64
-#define PRIX64 "llX"
+# define av_const
#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)
+#ifndef av_cold
+#if defined(__GNUC__) && (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ > 2)
+# define av_cold __attribute__((cold))
+#else
+# define av_cold
#endif
-
-#ifndef INT64_MAX
-#define INT64_MAX int64_t_C(9223372036854775807)
#endif
-#ifndef UINT64_MAX
-#define UINT64_MAX uint64_t_C(0xFFFFFFFFFFFFFFFF)
-#endif
+#ifdef HAVE_AV_CONFIG_H
+# include "internal.h"
+#endif /* HAVE_AV_CONFIG_H */
-#ifndef INT_BIT
-# if INT_MAX != 2147483647
-# define INT_BIT 64
-# else
-# define INT_BIT 32
-# endif
+#ifndef attribute_deprecated
+#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
+# define attribute_deprecated __attribute__((deprecated))
+#else
+# define attribute_deprecated
#endif
-
-#ifndef int64_t_C
-#define int64_t_C(c) (c ## LL)
-#define uint64_t_C(c) (c ## ULL)
#endif
-#if defined(__MINGW32__) && !defined(BUILD_AVUTIL) && defined(BUILD_SHARED_AV)
-# define FF_IMPORT_ATTR __declspec(dllimport)
+#ifndef av_unused
+#if defined(__GNUC__)
+# define av_unused __attribute__((unused))
#else
-# define FF_IMPORT_ATTR
+# define av_unused
#endif
-
-
-#ifdef HAVE_AV_CONFIG_H
-/* only include the following when compiling package */
-# include "internal.h"
#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 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 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)
+static inline av_const int av_log2(unsigned int v)
{
- int n;
-
- n = 0;
+ int n = 0;
if (v & 0xffff0000) {
v >>= 16;
n += 16;
return n;
}
-static inline int av_log2_16bit(unsigned int v)
+static inline av_const int av_log2_16bit(unsigned int v)
{
- int n;
-
- n = 0;
+ int n = 0;
if (v & 0xff00) {
v >>= 8;
n += 8;
}
/* median of 3 */
-static inline int mid_pred(int a, int b, int c)
+static inline av_const int mid_pred(int a, int b, int c)
{
-#if HAVE_CMOV
+#ifdef HAVE_CMOV
int i=b;
asm volatile(
"cmp %2, %1 \n\t"
* @param a value to clip
* @param amin minimum value of the clip range
* @param amax maximum value of the clip range
- * @return cliped value
+ * @return clipped value
*/
-static inline int clip(int a, int amin, int amax)
+static inline av_const int av_clip(int a, int amin, int amax)
{
- if (a < amin) return amin;
+ 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 cliped value
+ * @return clipped value
*/
-static inline uint8_t clip_uint8(int a)
+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 ff_gcd(int64_t a, int64_t b);
+int64_t av_const ff_gcd(int64_t a, int64_t b);
/**
* converts fourcc string to int
*/
-static inline int ff_get_fourcc(const char *s){
+static inline av_pure int ff_get_fourcc(const char *s){
#ifdef HAVE_AV_CONFIG_H
assert( strlen(s)==4 );
#endif
/*!
* \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
+ * 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
+ * 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 execuded up to 4 times.
- * \param ERROR action that should be taken when an invalid utf-8 byte is returned
+ * 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.
*/
/*!
* \def PUT_UTF8(val, tmp, PUT_BYTE)
- * converts a 32-bit unicode character to its utf-8 encoded form (up to 4 bytes long).
+ * 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
+ * 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.
+ * \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, depending on the length of the converted
+ * 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)\
}\
}
-#if defined(ARCH_X86) || defined(ARCH_POWERPC)
+#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);
+ 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;
+ 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__(
+ asm volatile(
"1:\n"
"mftbu %2\n"
"mftb %0\n"
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= read_time();\
+uint64_t tstart= AV_READ_TIME();\
#define STOP_TIMER(id) \
-tend= read_time();\
+tend= AV_READ_TIME();\
{\
- 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(((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);\
- }\
+ 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
-/* memory */
-
-#ifdef __GNUC__
- #define DECLARE_ALIGNED(n,t,v) t v __attribute__ ((aligned (n)))
-#else
- #define DECLARE_ALIGNED(n,t,v) __declspec(align(n)) t v
-#endif
-
-/* 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 */
+#endif /* FFMPEG_COMMON_H */