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Change intra filtering according to VTM6

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This commit is contained in:
Marko Viitanen 2019-08-23 08:56:35 +03:00
parent a16efe6b52
commit 5bebb18943
2 changed files with 6 additions and 9 deletions
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2
src/intra.c
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@ -246,7 +246,7 @@ void kvz_intra_predict(
} else {
// Angular modes use smoothed reference pixels, unless the mode is close
// to being either vertical or horizontal.
static const int kvz_intra_hor_ver_dist_thres[10] = {20, 20, 20, 14, 2, 0, 20, 0, 0, 0 };
static const int kvz_intra_hor_ver_dist_thres[10] = {24, 24, 24, 14, 2, 0, 20, 0, 0, 0 };
int filter_threshold = kvz_intra_hor_ver_dist_thres[kvz_math_floor_log2(width)];
int dist_from_vert_or_hor = MIN(abs(mode - 50), abs(mode - 18));
if (dist_from_vert_or_hor > filter_threshold) {

11
src/strategies/generic/intra-generic.c
View file

@ -175,13 +175,10 @@ static void kvz_angular_pred_generic(
p[0] = ref_main[ref_main_index - 1];
p[1] = ref_main[ref_main_index];
p[2] = ref_main[ref_main_index + 1];
p[3] = f[3] != 0 ? ref_main[ref_main_index + 2] : 0;
if (use_cubic) {
p[3] = ref_main[ref_main_index + 2];
dst[y * width + x] = CLIP_TO_PIXEL(((int32_t)(f[0] * p[0]) + (int32_t)(f[1] * p[1]) + (int32_t)(f[2] * p[2]) + (int32_t)(f[3] * p[3]) + 32) >> 6);
}
else {
dst[y * width + x] = ((int32_t)(f[0]*p[0]) + (int32_t)(f[1]*p[1]) + (int32_t)(f[2]*p[2]) + (int32_t)(f[3]*p[3]) + 32) >> 6;
}
}
}
else {
@ -190,7 +187,7 @@ static void kvz_angular_pred_generic(
for (int_fast32_t x = 0; x < width; ++x) {
kvz_pixel ref1 = ref_main[x + delta_int];
kvz_pixel ref2 = ref_main[x + delta_int + 1];
dst[y * width + x] = ((32 - delta_fract) * ref1 + delta_fract * ref2 + 16) >> 5;
dst[y * width + x] = ref1 + ((delta_fract * (ref2-ref1) + 16) >> 5);
}
}
}