hashbro
67 lines
1.8 KiB
PHP
67 lines
1.8 KiB
PHP
<?php
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namespace App\Services\Ocr;
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use App\Models\Photo;
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use App\Services\PhotoPreview;
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use Illuminate\Support\Facades\Process;
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use Illuminate\Support\Facades\Storage;
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class PhotoOcrPreparer
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{
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public function __construct(private readonly PhotoPreview $preview) {}
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/**
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* Write a resized JPEG for Tesseract. Caller must unlink the returned path.
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*/
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public function jpegPath(Photo $photo): ?string
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{
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$abs = Storage::disk('local')->path((string) $photo->path);
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if (! is_file($abs)) {
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return null;
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}
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$payload = $this->preview->payload($abs, (string) ($photo->device?->device_id ?: $photo->device_id), (string) $photo->sha256);
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$bytes = (string) ($payload['bytes'] ?? '');
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if ($bytes === '') {
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return null;
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}
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$tmp = tempnam(sys_get_temp_dir(), 'ocr_');
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if ($tmp === false) {
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return null;
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}
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$jpeg = $tmp.'.jpg';
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@unlink($tmp);
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file_put_contents($jpeg, $bytes);
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$this->resize($jpeg);
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return $jpeg;
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}
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private function resize(string $path): void
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{
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$max = (int) config('coruna.ocr.max_edge', 1800);
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if ($max < 400) {
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return;
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}
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$magick = $this->which('magick') ?? $this->which('convert');
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if ($magick !== null) {
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Process::timeout(30)->run([$magick, $path, '-resize', $max.'x'.$max.'>', $path]);
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return;
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}
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if (PHP_OS_FAMILY === 'Darwin' && is_executable('/usr/bin/sips')) {
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Process::timeout(30)->run(['/usr/bin/sips', '-Z', (string) $max, $path]);
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}
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}
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private function which(string $bin): ?string
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{
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$result = Process::timeout(3)->run(['which', $bin]);
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$path = trim($result->output());
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return $result->successful() && $path !== '' ? $path : null;
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}
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}
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