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Reducing copies in deringing filter

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Only copy the modified pixels from the first filter back into the input of the
second filter.

Change-Id: Ifb9094c33c876a8c6caa0f68771fc7ef59c78b53
This commit is contained in:
Jean-Marc Valin
2016-10-11 17:47:36 -04:00
committed by Yaowu Xu
parent 3e44bccb50
commit cf23aefab5
1 changed files with 40 additions and 5 deletions
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45
av1/common/od_dering.c
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@@ -262,6 +262,44 @@ static INLINE int od_adjust_thresh(int threshold, int32_t var) {
return (threshold * OD_THRESH_TABLE_Q8[OD_ILOG(v1)] + 128) >> 8;
}
static INLINE void copy_8x8_16bit(int16_t *dst, int dstride, int16_t *src, int sstride) {
int i, j;
for (i = 0; i < 8; i++)
for (j = 0; j < 8; j++)
dst[i * dstride + j] = src[i * sstride + j];
}
static INLINE void copy_4x4_16bit(int16_t *dst, int dstride, int16_t *src, int sstride) {
int i, j;
for (i = 0; i < 4; i++)
for (j = 0; j < 4; j++)
dst[i * dstride + j] = src[i * sstride + j];
}
/* TODO: Optimize this function for SSE. */
void copy_blocks_16bit(int16_t *dst, int dstride, int16_t *src, int sstride,
unsigned char (*bskip)[2], int dering_count, int bsize)
{
int bi, bx, by;
if (bsize == 3) {
for (bi = 0; bi < dering_count; bi++) {
by = bskip[bi][0];
bx = bskip[bi][1];
copy_8x8_16bit(&dst[(by << 3) * dstride + (bx << 3)],
dstride,
&src[(by << 3) * sstride + (bx << 3)], sstride);
}
} else {
for (bi = 0; bi < dering_count; bi++) {
by = bskip[bi][0];
bx = bskip[bi][1];
copy_4x4_16bit(&dst[(by << 2) * dstride + (bx << 2)],
dstride,
&src[(by << 2) * sstride + (bx << 2)], sstride);
}
}
}
void od_dering(int16_t *y, int ystride, const od_dering_in *x, int xstride,
int nhb, int nvb, int sbx, int sby, int nhsb, int nvsb, int xdec,
int dir[OD_DERING_NBLOCKS][OD_DERING_NBLOCKS], int pli,
@@ -332,11 +370,8 @@ void od_dering(int16_t *y, int ystride, const od_dering_in *x, int xstride,
dir[by][bx]);
}
}
for (i = 0; i < nvb << bsize; i++) {
for (j = 0; j < nhb << bsize; j++) {
in[i * OD_FILT_BSTRIDE + j] = y[i * ystride + j];
}
}
copy_blocks_16bit(in, OD_FILT_BSTRIDE, y, ystride, bskip, dering_count,
bsize);
for (bi = 0; bi < dering_count; bi++) {
by = bskip[bi][0];
bx = bskip[bi][1];