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ppc: fmtconvert: kill VLA in float_to_int16_interleave_altivec()

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Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard 2012-10-04 01:26:50 +01:00
parent bcf07a15a0
commit 642b4efaf7
1 changed files with 18 additions and 7 deletions
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25
libavcodec/ppc/fmtconvert_altivec.c
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@ -83,6 +83,22 @@ static void float_to_int16_altivec(int16_t *dst, const float *src, long len)
}
}
static void float_to_int16_stride_altivec(int16_t *dst, const float *src,
long len, int stride)
{
int i, j;
vector signed short d, s;
for (i = 0; i < len - 7; i += 8) {
d = float_to_int16_one_altivec(src + i);
for (j = 0; j < 8; j++) {
s = vec_splat(d, j);
vec_ste(s, 0, dst);
dst += stride;
}
}
}
static void float_to_int16_interleave_altivec(int16_t *dst, const float **src,
long len, int channels)
{
@ -124,13 +140,8 @@ static void float_to_int16_interleave_altivec(int16_t *dst, const float **src,
}
}
} else {
DECLARE_ALIGNED(16, int16_t, tmp)[len];
int c, j;
for (c = 0; c < channels; c++) {
float_to_int16_altivec(tmp, src[c], len);
for (i = 0, j = c; i < len; i++, j+=channels)
dst[j] = tmp[i];
}
for (i = 0; i < channels; i++)
float_to_int16_stride_altivec(dst + i, src[i], len, channels);
}
}
}