* common internal and external api header.
*/
-#ifndef COMMON_H
-#define COMMON_H
+#ifndef FFMPEG_COMMON_H
+#define FFMPEG_COMMON_H
#include <inttypes.h>
#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
+
#ifdef HAVE_AV_CONFIG_H
# include "internal.h"
#endif /* HAVE_AV_CONFIG_H */
#endif
#endif
-#ifndef INT64_C
-#define INT64_C(c) (c ## LL)
-#define UINT64_C(c) (c ## ULL)
+#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 */
* @param amax maximum value of the clip range
* @return clipped value
*/
-static inline int clip(int a, int amin, int amax)
+static inline int av_clip(int a, int amin, int amax)
{
if (a < amin) return amin;
else if (a > amax) return amax;
* @param a value to clip
* @return clipped value
*/
-static inline uint8_t clip_uint8(int a)
+static inline 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 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);
/*!
* \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 executed up to 4 times for values in the valid utf-8 range,
+ * 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
+ * \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 for values in the valid utf-8 range and up to
+ * 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.
*/
}\
}
-#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)
{
);
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)
{
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;\
#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 */
projects / ffmpeg / blobdiff