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Merge "Use qdiff to adjust the threshold of sad and variance in MFQE."

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JackyChen 2015-01-07 14:57:46 -08:00 committed by Gerrit Code Review
commit 1883c940b9
1 changed files with 36 additions and 28 deletions
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64
vp9/common/vp9_mfqe.c
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@ -136,13 +136,27 @@ static void copy_block(const uint8_t *y, const uint8_t *u, const uint8_t *v,
}
}
static void get_thr(BLOCK_SIZE bs, int qdiff, int *sad_thr, int *vdiff_thr) {
const int adj = qdiff >> MFQE_PRECISION;
if (bs == BLOCK_16X16) {
*sad_thr = 7 + adj;
} else if (bs == BLOCK_32X32) {
*sad_thr = 6 + adj;
} else { // BLOCK_64X64
*sad_thr = 5 + adj;
}
*vdiff_thr = 125 + qdiff;
}
static void mfqe_block(BLOCK_SIZE bs, const uint8_t *y, const uint8_t *u,
const uint8_t *v, int y_stride, int uv_stride,
uint8_t *yd, uint8_t *ud, uint8_t *vd,
int yd_stride, int uvd_stride) {
int sad, sad_thr, vdiff;
uint8_t *yd, uint8_t *ud, uint8_t *vd, int yd_stride,
int uvd_stride, int qdiff) {
int sad, sad_thr, vdiff, vdiff_thr;
uint32_t sse;
get_thr(bs, qdiff, &sad_thr, &vdiff_thr);
if (bs == BLOCK_16X16) {
vdiff = (vp9_variance16x16(y, y_stride, yd, yd_stride, &sse) + 128) >> 8;
sad = (vp9_sad16x16(y, y_stride, yd, yd_stride) + 128) >> 8;
@ -154,23 +168,18 @@ static void mfqe_block(BLOCK_SIZE bs, const uint8_t *y, const uint8_t *u,
sad = (vp9_sad64x64(y, y_stride, yd, yd_stride) + 2048) >> 12;
}
if (bs == BLOCK_16X16) {
sad_thr = 8;
} else if (bs == BLOCK_32X32) {
sad_thr = 7;
} else { // BLOCK_64X64
sad_thr = 6;
}
// TODO(jackychen): More experiments and remove magic numbers.
// vdiff > sad * 3 means vdiff should not be too small, otherwise,
// it might be a lighting change in smooth area. When there is a
// lighting change in smooth area, it is dangerous to do MFQE.
if (sad > 1 && sad < sad_thr && vdiff > sad * 3 && vdiff < 150) {
int weight = ((float)sad / (sad_thr - 1)) * ((float)vdiff / (150 - 1)) *
(1 << MFQE_PRECISION);
apply_ifactor(y, y_stride, yd, yd_stride, u, v, uv_stride,
ud, vd, uvd_stride, bs, weight);
if (sad > 1 && vdiff > sad * 3) {
const int weight = 1 << MFQE_PRECISION;
int ifactor = weight * sad * vdiff / (sad_thr * vdiff_thr);
// When ifactor equals weight, no MFQE is done.
if (ifactor > weight) {
ifactor = weight;
}
apply_ifactor(y, y_stride, yd, yd_stride, u, v, uv_stride, ud, vd,
uvd_stride, bs, ifactor);
} else {
// Copy the block from current frame (i.e., no mfqe is done).
copy_block(y, u, v, y_stride, uv_stride, yd, ud, vd,
@ -199,8 +208,7 @@ static void mfqe_partition(VP9_COMMON *cm, MODE_INFO *mi, BLOCK_SIZE bs,
int yd_stride, int uvd_stride) {
int mi_offset, y_offset, uv_offset;
const BLOCK_SIZE cur_bs = mi->mbmi.sb_type;
// TODO(jackychen): Consider how and whether to use qdiff in MFQE.
// int qdiff = cm->base_qindex - cm->postproc_state.last_base_qindex;
const int qdiff = cm->base_qindex - cm->postproc_state.last_base_qindex;
const int bsl = b_width_log2_lookup[bs];
PARTITION_TYPE partition = partition_lookup[bsl][cur_bs];
const BLOCK_SIZE subsize = get_subsize(bs, partition);
@ -235,18 +243,18 @@ static void mfqe_partition(VP9_COMMON *cm, MODE_INFO *mi, BLOCK_SIZE bs,
if (mfqe_decision(mi, mfqe_bs)) {
// Do mfqe on the first square partition.
mfqe_block(bs_tmp, y, u, v, y_stride, uv_stride,
yd, ud, vd, yd_stride, uvd_stride);
yd, ud, vd, yd_stride, uvd_stride, qdiff);
// Do mfqe on the second square partition.
mfqe_block(bs_tmp, y + y_offset, u + uv_offset, v + uv_offset,
y_stride, uv_stride, yd + y_offset, ud + uv_offset,
vd + uv_offset, yd_stride, uvd_stride);
vd + uv_offset, yd_stride, uvd_stride, qdiff);
}
if (mfqe_decision(mi + mi_offset * cm->mi_stride, mfqe_bs)) {
// Do mfqe on the first square partition.
mfqe_block(bs_tmp, y + y_offset * y_stride, u + uv_offset * uv_stride,
v + uv_offset * uv_stride, y_stride, uv_stride,
yd + y_offset * yd_stride, ud + uv_offset * uvd_stride,
vd + uv_offset * uvd_stride, yd_stride, uvd_stride);
vd + uv_offset * uvd_stride, yd_stride, uvd_stride, qdiff);
// Do mfqe on the second square partition.
mfqe_block(bs_tmp, y + y_offset * y_stride + y_offset,
u + uv_offset * uv_stride + uv_offset,
@ -254,7 +262,7 @@ static void mfqe_partition(VP9_COMMON *cm, MODE_INFO *mi, BLOCK_SIZE bs,
uv_stride, yd + y_offset * yd_stride + y_offset,
ud + uv_offset * uvd_stride + uv_offset,
vd + uv_offset * uvd_stride + uv_offset,
yd_stride, uvd_stride);
yd_stride, uvd_stride, qdiff);
}
break;
case PARTITION_VERT:
@ -268,18 +276,18 @@ static void mfqe_partition(VP9_COMMON *cm, MODE_INFO *mi, BLOCK_SIZE bs,
if (mfqe_decision(mi, mfqe_bs)) {
// Do mfqe on the first square partition.
mfqe_block(bs_tmp, y, u, v, y_stride, uv_stride,
yd, ud, vd, yd_stride, uvd_stride);
yd, ud, vd, yd_stride, uvd_stride, qdiff);
// Do mfqe on the second square partition.
mfqe_block(bs_tmp, y + y_offset * y_stride, u + uv_offset * uv_stride,
v + uv_offset * uv_stride, y_stride, uv_stride,
yd + y_offset * yd_stride, ud + uv_offset * uvd_stride,
vd + uv_offset * uvd_stride, yd_stride, uvd_stride);
vd + uv_offset * uvd_stride, yd_stride, uvd_stride, qdiff);
}
if (mfqe_decision(mi + mi_offset, mfqe_bs)) {
// Do mfqe on the first square partition.
mfqe_block(bs_tmp, y + y_offset, u + uv_offset, v + uv_offset,
y_stride, uv_stride, yd + y_offset, ud + uv_offset,
vd + uv_offset, yd_stride, uvd_stride);
vd + uv_offset, yd_stride, uvd_stride, qdiff);
// Do mfqe on the second square partition.
mfqe_block(bs_tmp, y + y_offset * y_stride + y_offset,
u + uv_offset * uv_stride + uv_offset,
@ -287,14 +295,14 @@ static void mfqe_partition(VP9_COMMON *cm, MODE_INFO *mi, BLOCK_SIZE bs,
uv_stride, yd + y_offset * yd_stride + y_offset,
ud + uv_offset * uvd_stride + uv_offset,
vd + uv_offset * uvd_stride + uv_offset,
yd_stride, uvd_stride);
yd_stride, uvd_stride, qdiff);
}
break;
case PARTITION_NONE:
if (mfqe_decision(mi, cur_bs)) {
// Do mfqe on this partition.
mfqe_block(cur_bs, y, u, v, y_stride, uv_stride,
yd, ud, vd, yd_stride, uvd_stride);
yd, ud, vd, yd_stride, uvd_stride, qdiff);
} else {
// Copy the block from current frame(i.e., no mfqe is done).
copy_block(y, u, v, y_stride, uv_stride, yd, ud, vd,