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Fixing angular intra prediction reference pixels

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This commit is contained in:
Marko Viitanen 2019-07-08 14:00:02 +03:00
parent 0656c54cab
commit 3d1fa2a9cf
1 changed files with 9 additions and 2 deletions
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11
src/strategies/generic/intra-generic.c
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@ -127,20 +127,27 @@ static void kvz_angular_pred_generic(
int_fast32_t col_sample_disp = 128; // rounding for the ">> 8"
int_fast16_t inv_abs_sample_disp = modedisp2invsampledisp[abs(mode_disp)];
// TODO: add 'vertical_mode ? height : width' instead of 'width'
int_fast8_t most_negative_index = ((width-1) * sample_disp) >> 5;
int_fast8_t most_negative_index = (width * sample_disp) >> 5;
for (int_fast8_t x = -1; x > most_negative_index; --x) {
col_sample_disp += inv_abs_sample_disp;
int_fast8_t side_index = col_sample_disp >> 8;
tmp_ref[x + width - 1] = ref_side[side_index - 1];
}
tmp_ref[width + width - 1] = tmp_ref[width + width];
tmp_ref[width + width] = tmp_ref[width + width-1];
tmp_ref[most_negative_index + width - 1] = tmp_ref[most_negative_index + width];
}
else {
// sample_disp >= 0 means we don't need to refer to negative indices,
// which means we can just use the references as is.
ref_main = (vertical_mode ? in_ref_above : in_ref_left) + 1;
ref_side = (vertical_mode ? in_ref_left : in_ref_above) + 1;
memcpy(tmp_ref + width, ref_main, (width*2) * sizeof(kvz_pixel));
ref_main = &tmp_ref[width];
tmp_ref[width-1] = tmp_ref[width];
int8_t last_index = 1 + width;
//tmp_ref[width + last_index] = tmp_ref[width + last_index - 1];
}
if (sample_disp != 0) {