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Start implementing large block filtering

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This commit is contained in:
Jaakko Laitinen 2020-12-10 18:03:18 +02:00
parent 33cea17484
commit 976d1c8812
1 changed files with 64 additions and 2 deletions
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62
src/filter.c
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@ -312,6 +312,68 @@ static INLINE void scatter_deblock_pixels(
static INLINE int kvz_filter_deblock_large_block(kvz_pixel *line, kvz_pixel *lineL, const int32_t tc,
const uint8_t filter_length_P, const uint8_t filter_length_Q)
{
int refP = 0;
int refQ = 0;
int refMiddle = 0;
const int coeffs7[7] = { 59, 50, 41, 32, 23, 14, 5 };
const int coeffs5[5] = { 58, 45, 32, 19, 6 };
const int coeffs3[3] = { 53, 32, 11 };
int *coeffsP;
int *coeffsQ;
switch (filter_length_P)
{
case 7:
refP = (lineL[0] + lineL[1] + 1) >> 1;
coeffsP = coeffs7;
break;
case 5:
refP = (lineL[2] + lineL[3] + 1) >> 1;
coeffsP = coeffs5;
break;
case 3:
refP = (line[0] + line[1] + 1) >> 1;
coeffsP = coeffs3;
break;
}
switch (filter_length_Q)
{
case 7:
refQ = (lineL[6] + lineL[7] + 1) >> 1;
coeffsQ = coeffs7;
break;
case 5:
refQ = (lineL[4] + lineL[5] + 1) >> 1;
coeffsQ = coeffs5;
break;
case 3:
refQ = (line[6] + line[7] + 1) >> 1;
coeffsQ = coeffs3;
break;
}
if (filter_length_P == filter_length_Q) {
if (filter_length_P == 7) {
refMiddle = (lineL[1] + lineL[2] + lineL[3] + line[0] + line[1] + line[2] + 2 * (line[3] + line[4])
+ line[5] + line[6] + line[7] + lineL[4] + lineL[5] + lineL[6] + 8) >> 4;
}
else { //filter_length_P == 5
refMiddle = (lineL[3] + line[0] + 2 * (line[1] + line[2] + line[3] + line[4]
+ line[5] + line[6]) + line[7] + lineL[4] + 8) >> 4;
}
}
else {
//TODO: add other length combinations
}
//TODO: add filtering
return 3;
}