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#ifndef _WMAPRO_MATH_H_
#define _WMAPRO_MATH_H_
#include <inttypes.h>
#define fixtof16(x) (float)((float)(x) / (float)(1 << 16))
#define fixtof31(x) (float)((float)(x) / (float)(1 << 31))
#define ftofix16(x) ((int32_t)((x) * (float)(1 << 16) + ((x) < 0 ? -0.5:0.5)))
#define ftofix31(x) ((int32_t)((x) * (float)(1 << 31) + ((x) < 0 ? -0.5:0.5)))
static inline int32_t fixmulshift(int32_t x, int32_t y, int shamt)
{
int64_t temp;
temp = x;
temp *= y;
temp >>= shamt;
return (int32_t)temp;
}
#ifdef CPU_COLDFIRE
static inline void vector_fixmul_window(int32_t *dst, const int32_t *src0,
const int32_t *src1, const int32_t *win,
int len)
{
int i, j;
dst += len;
win += len;
src0+= len;
for(i=-len, j=len-1; i<0; i++, j--) {
int32_t s0 = src0[i];
int32_t s1 = src1[j];
int32_t wi = -win[i];
int32_t wj = -win[j];
asm volatile ("mac.l %[s0], %[wj], %%acc0\n\t"
"msac.l %[s1], %[wi], %%acc0\n\t"
"mac.l %[s0], %[wi], %%acc1\n\t"
"mac.l %[s1], %[wj], %%acc1\n\t"
"movclr.l %%acc0, %[s0]\n\t"
"move.l %[s0], (%[dst_i])\n\t"
"movclr.l %%acc1, %[s0]\n\t"
"move.l %[s0], (%[dst_j])\n\t"
: [s0] "+r" (s0) /* this register is clobbered so specify it as an input */
: [dst_i] "a" (&dst[i]), [dst_j] "a" (&dst[j]),
[s1] "r" (s1), [wi] "r" (wi), [wj] "r" (wj)
: "cc", "memory");
}
}
#else
static inline void vector_fixmul_window(int32_t *dst, const int32_t *src0,
const int32_t *src1, const int32_t *win,
int len)
{
int i, j;
dst += len;
win += len;
src0+= len;
for(i=-len, j=len-1; i<0; i++, j--) {
int32_t s0 = src0[i];
int32_t s1 = src1[j];
int32_t wi = -win[i];
int32_t wj = -win[j];
dst[i] = fixmulshift(s0,wj,31) - fixmulshift(s1,wi,31);
dst[j] = fixmulshift(s0,wi,31) + fixmulshift(s1,wj,31);
}
}
#endif
static inline void vector_fixmul_scalar(int32_t *dst, const int32_t *src, int32_t mul,
int len, int shift)
{
int i;
for(i=0; i<len; i++)
dst[i] = fixmulshift(src[i],mul,shift);
}
static inline int av_clip(int a, int amin, int amax)
{
if (a < amin) return amin;
else if (a > amax) return amax;
else return a;
}
#endif /* _WMAPRO_MATH_H_ */
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