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Stupidify the 4x4 planar loop for vectorization

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This commit is contained in:
Pauli Oikkonen 2019-11-14 13:57:48 +02:00
parent 6f13f6525c
commit 8d45ab4951
1 changed files with 14 additions and 2 deletions
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16
src/strategies/avx2/intra-avx2.c
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@ -503,10 +503,22 @@ static void kvz_intra_pred_planar_avx2(
} else {
// Unoptimized version for reference.
// Only if log2_width == 2 <=> width == 4
for (int y = 0; y < width; ++y) {
uint8_t yp1 = y + 1;
uint16_t yp1_bl = yp1 * bottom_left;
uint8_t rl_curr = ref_left[yp1];
for (int x = 0; x < width; ++x) {
int_fast16_t hor = (width - 1 - x) * ref_left[y + 1] + (x + 1) * top_right;
int_fast16_t ver = (width - 1 - y) * ref_top[x + 1] + (y + 1) * bottom_left;
uint8_t xp1 = x + 1;
uint16_t xp1_tr = xp1 * top_right;
uint8_t rt_curr = ref_top[xp1];
uint8_t rdist = width - 1 - x;
uint8_t bdist = width - 1 - y;
int_fast16_t hor = rdist * rl_curr + xp1_tr;
int_fast16_t ver = bdist * rt_curr + yp1_bl;
dst[y * width + x] = (ver + hor + width) >> (log2_width + 1);
}
}