13845548032

Committed 13 Mar 2025 10:07PM UTC coverage: 100.0%. Remained the same

Build # 13845548032

Build Type

push

github

Committed by

web-flow

Commit Message

github: workflow: updates (#11)

Run Details

136 of 136 relevant lines covered (100.0%)

4.94 hits per line

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100.0

/src/AC.php

<?php

namespace kornrunner\Blurhash;

final class AC {

    public static function encode(array $value, float $max_value): float {
        $quant_r = static::quantise($value[0] / $max_value);
        $quant_g = static::quantise($value[1] / $max_value);
        $quant_b = static::quantise($value[2] / $max_value);
        return $quant_r * 19 * 19 + $quant_g * 19 + $quant_b;
    }

    public static function decode(int $value, float $max_value): array {
        $quant_r = intdiv($value, 19 * 19);
        $quant_g = intdiv($value, 19) % 19;
        $quant_b = $value % 19;

        return [
            static::signPow(($quant_r - 9) / 9, 2) * $max_value,
            static::signPow(($quant_g - 9) / 9, 2) * $max_value,
            static::signPow(($quant_b - 9) / 9, 2) * $max_value
        ];
    }

    private static function quantise(float $value): float {
        return floor(max(0, min(18, floor(static::signPow($value, 0.5) * 9 + 9.5))));
    }

    private static function signPow(float $base, float $exp): float {
        $sign = $base <=> 0;
        return $sign * pow(abs($base), $exp);
    }
}

1	<?php
2
3	namespace kornrunner\Blurhash;
4
5	final class AC {
6
7	public static function encode(array $value, float $max_value): float {
8	$quant_r = static::quantise($value[0] / $max_value);	5✔
9	$quant_g = static::quantise($value[1] / $max_value);	5✔
10	$quant_b = static::quantise($value[2] / $max_value);	5✔
11	return $quant_r * 19 * 19 + $quant_g * 19 + $quant_b;	5✔
12	}
13
14	public static function decode(int $value, float $max_value): array {
15	$quant_r = intdiv($value, 19 * 19);	5✔
16	$quant_g = intdiv($value, 19) % 19;	5✔
17	$quant_b = $value % 19;	5✔
18
19	return [	5✔
20	static::signPow(($quant_r - 9) / 9, 2) * $max_value,	5✔
21	static::signPow(($quant_g - 9) / 9, 2) * $max_value,	5✔
22	static::signPow(($quant_b - 9) / 9, 2) * $max_value	5✔
23	];	5✔
24	}
25
26	private static function quantise(float $value): float {
27	return floor(max(0, min(18, floor(static::signPow($value, 0.5) * 9 + 9.5))));	5✔
28	}
29
30	private static function signPow(float $base, float $exp): float {
31	$sign = $base <=> 0;	10✔
32	return $sign * pow(abs($base), $exp);	10✔
33	}
34	}

kornrunner / php-blurhash / 13845548032

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