#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+
#include "attributes.h"
+#include "version.h"
#include "libavutil/avconfig.h"
#if AV_HAVE_BIGENDIAN
#define FFALIGN(x, a) (((x)+(a)-1)&~((a)-1))
/* misc math functions */
-extern const uint8_t ff_log2_tab[256];
/**
* Reverse the order of the bits of an 8-bits unsigned integer.
*/
-extern const uint8_t av_reverse[256];
-
-static av_always_inline av_const int av_log2_c(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 av_always_inline av_const int av_log2_16bit_c(unsigned int v)
-{
- int n = 0;
- if (v & 0xff00) {
- v >>= 8;
- n += 8;
- }
- n += ff_log2_tab[v];
-
- return n;
-}
+#if FF_API_AV_REVERSE
+extern attribute_deprecated const uint8_t av_reverse[256];
+#endif
#ifdef HAVE_AV_CONFIG_H
# include "config.h"
/* Pull in unguarded fallback defines at the end of this file. */
#include "common.h"
+#ifndef av_log2
+av_const int av_log2(unsigned v);
+#endif
+
+#ifndef av_log2_16bit
+av_const int av_log2_16bit(unsigned v);
+#endif
+
/**
* Clip a signed integer value into the amin-amax range.
* @param a value to clip
else return a;
}
+/**
+ * Clip a signed 64bit 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 av_always_inline av_const int64_t av_clip64_c(int64_t a, int64_t amin, int64_t 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
* to ensure they are immediately available in intmath.h.
*/
-#ifndef av_log2
-# define av_log2 av_log2_c
-#endif
-#ifndef av_log2_16bit
-# define av_log2_16bit av_log2_16bit_c
-#endif
#ifndef av_ceil_log2
# define av_ceil_log2 av_ceil_log2_c
#endif
#ifndef av_clip
# define av_clip av_clip_c
#endif
+#ifndef av_clip64
+# define av_clip64 av_clip64_c
+#endif
#ifndef av_clip_uint8
# define av_clip_uint8 av_clip_uint8_c
#endif