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/*
This file is part of jellything (https://codeberg.org/metamuffin/jellything)
which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
Copyright (C) 2026 metamuffin <metamuffin.org>
*/
use crate::codec_param::CodecParam;
pub fn av1_codec_param(cp: &[u8]) -> CodecParam {
let profile = (cp[1] >> 5) & 0b111;
let level = cp[1] & 0b11111;
let tier = (cp[2] >> 7) & 0b1;
let high_bitdepth = (cp[2] >> 6) & 0b1;
let twelve_bit = (cp[2] >> 5) & 0b1;
let _monochrome = (cp[2] >> 4) & 0b1;
let _css_x = (cp[2] >> 3) & 0b1;
let _css_y = (cp[2] >> 2) & 0b1;
let _css_pos = cp[2] & 0b11;
let tier_char = if tier == 1 { 'H' } else { 'M' };
let bit_depth = if twelve_bit == 1 {
12
} else if high_bitdepth == 1 {
10
} else {
8
};
CodecParam {
string: format!(
"av01.{profile}.{level:02}{tier_char}.{bit_depth:02}" // .{monochrome}.{css_x}{css_y}{css_pos}
),
bit_depth: Some(bit_depth),
}
}
#[test]
fn sample1() {
assert_eq!(av1_codec_param(&[0x81, 0x04, 0x4E]).string, "av01.0.04M.10");
}
#[test]
fn sample2() {
assert_eq!(av1_codec_param(&[0x81, 0x35, 0xF4]).string, "av01.1.21H.12");
}
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