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Move avutil tables only used in libavcodec to libavcodec.

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This commit is contained in:
Diego Biurrun
2012-10-11 01:16:05 +02:00
parent 0a75d1da23
commit 9734b8ba56
14 changed files with 70 additions and 85 deletions
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29
libavcodec/mathops.h
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@@ -22,9 +22,14 @@
#ifndef AVCODEC_MATHOPS_H
#define AVCODEC_MATHOPS_H
#include <stdint.h>
#include "libavutil/common.h"
#include "config.h"
extern const uint32_t ff_inverse[257];
extern const uint8_t ff_sqrt_tab[256];
#if ARCH_ARM
# include "arm/mathops.h"
#elif ARCH_AVR32
@@ -185,4 +190,28 @@ if ((y) < (x)) {\
# define PACK_2S16(a,b) PACK_2U16((a)&0xffff, (b)&0xffff)
#endif
#ifndef FASTDIV
# define FASTDIV(a,b) ((uint32_t)((((uint64_t)a) * ff_inverse[b]) >> 32))
#endif /* FASTDIV */
static inline av_const unsigned int ff_sqrt(unsigned int a)
{
unsigned int b;
if (a < 255) return (ff_sqrt_tab[a + 1] - 1) >> 4;
else if (a < (1 << 12)) b = ff_sqrt_tab[a >> 4] >> 2;
#if !CONFIG_SMALL
else if (a < (1 << 14)) b = ff_sqrt_tab[a >> 6] >> 1;
else if (a < (1 << 16)) b = ff_sqrt_tab[a >> 8] ;
#endif
else {
int s = av_log2_16bit(a >> 16) >> 1;
unsigned int c = a >> (s + 2);
b = ff_sqrt_tab[c >> (s + 8)];
b = FASTDIV(c,b) + (b << s);
}
return b - (a < b * b);
}
#endif /* AVCODEC_MATHOPS_H */