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MP3: Improve validation of frame headers (#67)

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Leonid Parfentev 2022-09-07 00:25:58 +03:00 committed by GitHub
parent fc1726b357
commit b347ee0fd5
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1 changed files with 3 additions and 4 deletions
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7
src/mpeg/header.rs
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@ -240,15 +240,14 @@ impl Header {
let bitrate_index = (data >> 12) & 0xF;
header.bitrate = BITRATES[version_index][layer_index][bitrate_index as usize];
if header.bitrate == 0 {
return Some(header);
return None;
}
// Sample rate index
let sample_rate_index = (data >> 10) & 0b11;
header.sample_rate = match sample_rate_index {
// This is invalid, but it doesn't seem worth it to error here
// We will error if properties are read
3 => return Some(header),
// This is invalid
3 => return None,
_ => SAMPLE_RATES[header.version as usize][sample_rate_index as usize],
};