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Refactor an if statement

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This commit is contained in:
Josh Holmer 2018-01-30 22:27:34 -05:00
parent 348c7dbc56
commit 0c2e3777b1
1 changed files with 6 additions and 12 deletions
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18
src/png/mod.rs
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@ -271,19 +271,13 @@ impl PngData {
for line in self.scan_lines() {
match filter {
0 | 1 | 2 | 3 | 4 => {
if last_pass == line.pass || filter <= 1 {
filtered.push(filter);
filtered.extend_from_slice(&filter_line(
filter,
bpp,
&line.data,
&last_line,
));
let filter = if last_pass == line.pass || filter <= 1 {
filter
} else {
// Avoid vertical filtering on first line of each interlacing pass
filtered.push(0);
filtered.extend_from_slice(&filter_line(0, bpp, &line.data, &last_line));
}
0
};
filtered.push(filter);
filtered.extend_from_slice(&filter_line(filter, bpp, &line.data, &last_line));
}
5 => {
// Heuristically guess best filter per line