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Optimize for minimum SAD.

This commit is contained in:
Themaister 2013-01-31 15:50:15 +01:00
parent 6bd2eb3b6e
commit 59fa5eafb1
1 changed files with 9 additions and 9 deletions
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18
gfx/rpng/rpng.c
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@ -646,35 +646,35 @@ static bool rpng_save_image(const char *path, const uint8_t *data,
unsigned paeth_score = filter_paeth(paeth_filtered, rgba_line, prev_encoded, width, bpp);
uint8_t filter = 0;
unsigned max_sad = none_score;
unsigned min_sad = none_score;
const uint8_t *chosen_filtered = rgba_line;
if (sub_score > max_sad)
if (sub_score < min_sad)
{
filter = 1;
chosen_filtered = sub_filtered;
max_sad = sub_score;
min_sad = sub_score;
}
if (up_score > max_sad)
if (up_score < min_sad)
{
filter = 2;
chosen_filtered = up_filtered;
max_sad = up_score;
min_sad = up_score;
}
if (avg_score > max_sad)
if (avg_score < min_sad)
{
filter = 3;
chosen_filtered = avg_filtered;
max_sad = avg_score;
min_sad = avg_score;
}
if (paeth_score > max_sad)
if (paeth_score < min_sad)
{
filter = 4;
chosen_filtered = paeth_filtered;
max_sad = paeth_score;
min_sad = paeth_score;
}
*encode_target++ = filter;