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Some minor changes in wedge generation code 

Makes the wedge generation code consistent with the
design doc.

Change-Id: Ifabc63c950de005309c44802c725f45cb78e21b1
This commit is contained in:
Debargha Mukherjee 2017-05-13 08:17:11 -07:00
Родитель e39e2ee1e6
Коммит 34f4fd3a57
1 изменённых файлов: 35 добавлений и 23 удалений
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58
av1/common/reconinter.c
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@ -468,21 +468,22 @@ static void init_wedge_master_masks() {
const int h = MASK_MASTER_SIZE;
const int stride = MASK_MASTER_STRIDE;
for (s = 0; s < NSMOOTHERS; s++) {
// Note: index [0] stores the masters, and [1] its complement.
#if MASK_MASTER_SIZE == 64
// Generate prototype by shifting the masters
int shift = h / 4;
for (i = 0; i < h; i += 2) {
shift_copy(wedge_master_oblique_even[s],
&wedge_mask_obl[s][1][WEDGE_OBLIQUE63][i * stride], shift,
&wedge_mask_obl[s][0][WEDGE_OBLIQUE63][i * stride], shift,
MASK_MASTER_SIZE);
shift--;
shift_copy(wedge_master_oblique_odd[s],
&wedge_mask_obl[s][1][WEDGE_OBLIQUE63][(i + 1) * stride],
&wedge_mask_obl[s][0][WEDGE_OBLIQUE63][(i + 1) * stride],
shift, MASK_MASTER_SIZE);
memcpy(&wedge_mask_obl[s][1][WEDGE_VERTICAL][i * stride],
memcpy(&wedge_mask_obl[s][0][WEDGE_VERTICAL][i * stride],
wedge_master_vertical[s],
MASK_MASTER_SIZE * sizeof(wedge_master_vertical[s][0]));
memcpy(&wedge_mask_obl[s][1][WEDGE_VERTICAL][(i + 1) * stride],
memcpy(&wedge_mask_obl[s][0][WEDGE_VERTICAL][(i + 1) * stride],
wedge_master_vertical[s],
MASK_MASTER_SIZE * sizeof(wedge_master_vertical[s][0]));
}
@ -495,29 +496,29 @@ static void init_wedge_master_masks() {
int y = (2 * i + 1 - h);
double d = (a[0] * x + a[1] * y) / asqrt;
const int msk = (int)rint((1.0 + tanh(d / smoother_param[s])) * 32);
wedge_mask_obl[s][1][WEDGE_OBLIQUE63][i * stride + j] = msk;
wedge_mask_obl[s][0][WEDGE_OBLIQUE63][i * stride + j] = msk;
const int mskx = (int)rint((1.0 + tanh(x / smoother_param[s])) * 32);
wedge_mask_obl[s][1][WEDGE_VERTICAL][i * stride + j] = mskx;
wedge_mask_obl[s][0][WEDGE_VERTICAL][i * stride + j] = mskx;
}
}
#endif // MASK_MASTER_SIZE == 64
for (i = 0; i < h; ++i) {
for (j = 0; j < w; ++j) {
const int msk = wedge_mask_obl[s][1][WEDGE_OBLIQUE63][i * stride + j];
wedge_mask_obl[s][1][WEDGE_OBLIQUE27][j * stride + i] = msk;
wedge_mask_obl[s][1][WEDGE_OBLIQUE117][i * stride + w - 1 - j] =
wedge_mask_obl[s][1][WEDGE_OBLIQUE153][(w - 1 - j) * stride + i] =
(1 << WEDGE_WEIGHT_BITS) - msk;
wedge_mask_obl[s][0][WEDGE_OBLIQUE63][i * stride + j] =
wedge_mask_obl[s][0][WEDGE_OBLIQUE27][j * stride + i] =
(1 << WEDGE_WEIGHT_BITS) - msk;
const int msk = wedge_mask_obl[s][0][WEDGE_OBLIQUE63][i * stride + j];
wedge_mask_obl[s][0][WEDGE_OBLIQUE27][j * stride + i] = msk;
wedge_mask_obl[s][0][WEDGE_OBLIQUE117][i * stride + w - 1 - j] =
wedge_mask_obl[s][0][WEDGE_OBLIQUE153][(w - 1 - j) * stride + i] =
(1 << WEDGE_WEIGHT_BITS) - msk;
wedge_mask_obl[s][1][WEDGE_OBLIQUE63][i * stride + j] =
wedge_mask_obl[s][1][WEDGE_OBLIQUE27][j * stride + i] =
(1 << WEDGE_WEIGHT_BITS) - msk;
wedge_mask_obl[s][1][WEDGE_OBLIQUE117][i * stride + w - 1 - j] =
wedge_mask_obl[s][1][WEDGE_OBLIQUE153][(w - 1 - j) * stride + i] =
msk;
const int mskx = wedge_mask_obl[s][1][WEDGE_VERTICAL][i * stride + j];
wedge_mask_obl[s][1][WEDGE_HORIZONTAL][j * stride + i] = mskx;
wedge_mask_obl[s][0][WEDGE_VERTICAL][i * stride + j] =
wedge_mask_obl[s][0][WEDGE_HORIZONTAL][j * stride + i] =
const int mskx = wedge_mask_obl[s][0][WEDGE_VERTICAL][i * stride + j];
wedge_mask_obl[s][0][WEDGE_HORIZONTAL][j * stride + i] = mskx;
wedge_mask_obl[s][1][WEDGE_VERTICAL][i * stride + j] =
wedge_mask_obl[s][1][WEDGE_HORIZONTAL][j * stride + i] =
(1 << WEDGE_WEIGHT_BITS) - mskx;
}
}
@ -539,12 +540,23 @@ static void init_wedge_signs() {
int i, w;
if (wbits == 0) continue;
for (w = 0; w < wtypes; ++w) {
// Get the mask master, i.e. index [0]
const uint8_t *mask = get_wedge_mask_inplace(w, 0, sb_type);
int sum = 0;
for (i = 0; i < bw; ++i) sum += mask[i];
for (i = 0; i < bh; ++i) sum += mask[i * MASK_MASTER_STRIDE];
sum = (sum + (bw + bh) / 2) / (bw + bh);
wedge_params.signflip[w] = (sum < 32);
int avg = 0;
for (i = 0; i < bw; ++i) avg += mask[i];
for (i = 1; i < bh; ++i) avg += mask[i * MASK_MASTER_STRIDE];
avg = (avg + (bw + bh - 1) / 2) / (bw + bh - 1);
// Default sign of this wedge is 1 if the average < 32, 0 otherwise.
// If default sign is 1:
// If sign requested is 0, we need to flip the sign and return
// the complement i.e. index [1] instead. If sign requested is 1
// we need to flip the sign and return index [0] instead.
// If default sign is 0:
// If sign requested is 0, we need to return index [0] the master
// if sign requested is 1, we need to return the complement index [1]
// instead.
wedge_params.signflip[w] = (avg < 32);
// printf("%d[%d] = %d\n", sb_type, w, wedge_params.signflip[w]);
}
}
}