用户 2026-11-05:「以后所有视频全部转成H.264」 新增 app/Video.php: - isVideo / available / probe / needsTranscode / toH264 - 判据:编码不是 h264 或像素格式不是 yuv420p/nv12 就要转 (10bit、4:2:2 的 h264 浏览器也不认,光看编码不够) - 参数:libx264 veryfast crf23 + yuv420p + aac 128k + faststart + scale=min(1920,iw):-2(4K 缩到 1080p,-2 保证高度偶数) - 转完自检编码与像素格式,不对就不采用 Attachment::save() 接入: - needsTranscode() 先判,已合规的不重复转(不白等几十秒) - 转码失败不阻断上传,原样保存 + error_log 记原因 - 转完改 mime/ext 为 video/mp4,否则前端判断不出来 - 转码产物是临时文件,必须清理(否则塞满 /tmp) 批量转换已有视频(15 个): - 13 个已是 h264 跳过,2 个 hevc 转成功 - 原地覆盖同 key,数据库引用全不断 - 原文件备份到 storage/_hevc_backup/ 验证:4 个抽样全部 h264/yuv420p 或 yuvj420p,浏览器可播。
322 lines
13 KiB
PHP
322 lines
13 KiB
PHP
<?php
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/**
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* 统一附件(v12):旅程照片 / 资源附件 / 任务附件 / 评论附件,全都走这一张表。
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*
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* 为什么要统一:这几个模块对附件的要求其实是同一件事 ——
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* "一个宿主挂多个文件、能下载、图片能预览、删宿主时别留下孤儿"。
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* 各写一张表就要把"下载/预览/权限"写四遍,将来再加模块还得写第五遍。
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*
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* 下载地址**不落库**:一律由 media.php?k=<key> 现算(地址形态换过一次,
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* 历史数据自动生效、零迁移 —— 这是 FeedLite 那边学到的最省事的一条)。
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*/
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declare(strict_types=1);
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namespace App;
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use App\Storage\Storage;
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final class Attachment
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{
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/** 图片扩展名 → MIME(服务端自己判,不信浏览器给的类型) */
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private const IMG_MIME = [
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'jpg' => 'image/jpeg', 'jpeg' => 'image/jpeg', 'png' => 'image/png',
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'gif' => 'image/gif', 'webp' => 'image/webp', 'heic' => 'image/heic',
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];
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public const MAX_PER_HOST = 60;
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/** 某个宿主的全部附件 */
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public static function list(string $type, int $targetId): array
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{
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$st = Database::get()->prepare(
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'SELECT * FROM attachments WHERE target_type = ? AND target_id = ? ORDER BY position, id'
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);
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$st->execute([$type, $targetId]);
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return $st->fetchAll();
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}
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/**
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* 存一个上传来的文件。
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*
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* @return array{ok:bool,error?:string,id?:int}
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*/
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public static function save(int $familyId, string $type, int $targetId, array $file, int $uploaderId = 0): array
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{
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if (!array_key_exists('error', $file)) {
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return ['ok' => false, 'error' => ''];
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}
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if (is_array($file['error'])) {
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return ['ok' => false, 'error' => '上传参数不对'];
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}
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if ($file['error'] === UPLOAD_ERR_NO_FILE) {
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return ['ok' => false, 'error' => ''];
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}
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if ($file['error'] !== UPLOAD_ERR_OK) {
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return ['ok' => false, 'error' => '上传失败(错误码 ' . (int)$file['error'] . ')'];
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}
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$stc = Database::get()->prepare('SELECT COUNT(*) FROM attachments WHERE target_type = ? AND target_id = ?');
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$stc->execute([$type, $targetId]);
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if ((int)$stc->fetchColumn() >= self::MAX_PER_HOST) {
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return ['ok' => false, 'error' => '单个条目最多 ' . self::MAX_PER_HOST . ' 个附件'];
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}
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$tmp = (string)$file['tmp_name'];
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$size = (int)@filesize($tmp);
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$fino = new \finfo(FILEINFO_MIME_TYPE);
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$mime = (string)$fino->file($tmp);
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$name = self::safeName((string)($file['name'] ?? ''));
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$ext = strtolower(pathinfo($name, PATHINFO_EXTENSION));
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if ($ext === '' && isset(self::IMG_MIME[$mime])) {
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$ext = explode('/', $mime)[1] ?? '';
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}
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// 图片走 photo 槽位(ratio='free':不裁剪,等比缩到最长边 1600);
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// 非图片(PDF/文档)原样存 —— 压缩反而会把它弄坏。
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// ⚠️ 槽位键必须是 ImageSlot::SLOTS 里真实存在的那个:曾经这里写 'free'
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// (把"不裁剪"的 ratio 当成槽位名用了),于是 Upload::image 直接返回
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// 「上传位置配置不正确」,所有附件上传静默失败。
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$isImage = strpos($mime, 'image/') === 0;
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if ($isImage) {
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$up = Upload::image($familyId, $file, 'photo');
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if (empty($up['ok'])) {
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return ['ok' => false, 'error' => (string)($up['error'] ?? '存图失败')];
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}
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$key = (string)$up['file'];
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} else {
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/* 🔴🔴 #57(用户 2026-11-05:「以后所有视频全部转成 H.264」)
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视频先转码再存。
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为什么必须转:用户的视频是手机拍的 H.265/HEVC,
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Chrome/Firefox **无法解码**(不存在能解码 HEVC 的前端 JS 库)。
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只能在服务端转成 H.264。
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⚠️ `needsTranscode()` 先判:已经符合 H.264 + yuv420p 的**不重复转**
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—— 用户传合规视频时不该白等几十秒。
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⚠️ **转码失败不阻断上传**:原样存。转码可能因磁盘满/编码异常失败,
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不该因此让用户传不了;原文件还能下载后用本地播放器看。
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⚠️ 转完要改 `$mime` / `$ext`,否则入库的 MIME 还是 video/quicktime
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之类,前端又判断不出来。
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⚠️ 转码产物是临时文件,**必须清掉**(撒了会塞满 /tmp)。 */
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$transcodeNote = '';
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if (Video::isVideo($mime) && Video::needsTranscode($tmp)) {
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$tr = Video::toH264($tmp);
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if (!empty($tr['ok'])) {
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$newPath = (string)$tr['path'];
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@unlink($tmp); // 原文件不要了
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$tmp = $newPath;
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$mime = 'video/mp4';
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$ext = 'mp4';
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$transcodeNote = (string)($tr['note'] ?? '');
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$size = (int)@filesize($tmp);
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} else {
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/* 转码失败:保留原文件,记一笔原因(不阻断上传) */
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$transcodeNote = '转码失败,已保存原文件:' . (string)($tr['error'] ?? '');
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error_log('[Attachment] 视频转码失败 target=' . $type . '/' . $targetId
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. ' err=' . (string)($tr['error'] ?? ''));
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}
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}
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$key = 'files/' . bin2hex(random_bytes(12)) . ($ext !== '' ? '.' . preg_replace('/[^a-z0-9]/', '', $ext) : '');
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$res = Storage::putFile($familyId, $tmp, $key, $mime !== '' ? $mime : 'application/octet-stream');
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/* 转码产物用完即删 —— 它是临时文件,不能留在 /tmp */
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if ($transcodeNote !== '' && strpos($tmp, '.h264.mp4') !== false) {
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@unlink($tmp);
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}
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if (empty($res['ok'])) {
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return ['ok' => false, 'error' => '保存失败:' . (string)($res['error'] ?? '')];
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}
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}
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$db = Database::get();
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$db->prepare(
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'INSERT INTO attachments
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(family_id, target_type, target_id, `key`, name, mime, size, is_image, position, uploader_id)
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VALUES (?,?,?,?,?,?,?,?,?,?)'
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)->execute([
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$familyId, $type, $targetId, $key,
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$name !== '' ? $name : null,
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$mime !== '' ? $mime : null,
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$size > 0 ? $size : null,
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$isImage ? 1 : 0,
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self::nextPosition($type, $targetId),
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$uploaderId > 0 ? $uploaderId : null,
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]);
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return [
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'ok' => true,
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'id' => (int)$db->lastInsertId(),
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/* 转码说明(空串 = 没转,不需要提示) */
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'note' => $transcodeNote ?? '',
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];
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}
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/** 删一个附件(连存储对象一起) */
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public static function remove(int $id): void
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{
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$st = Database::get()->prepare('SELECT family_id, `key` FROM attachments WHERE id = ?');
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$st->execute([$id]);
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$r = $st->fetch();
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if (!$r) {
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return;
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}
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Database::get()->prepare('DELETE FROM attachments WHERE id = ?')->execute([$id]);
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Storage::delete((int)$r['family_id'], (string)$r['key']);
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}
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/** 删某个宿主的全部附件(删旅程 / 删资源 / 删任务时调) */
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public static function removeAll(string $type, int $targetId): void
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{
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foreach (self::list($type, $targetId) as $a) {
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self::remove((int)$a['id']);
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}
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}
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/**
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* 删**某个宿主名下**的一颗附件(v79,App API 用)。
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*
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* 🔴 为什么不能直接用 `remove($id)`:那个只认附件 id,谁传一个别的任务的
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* 附件 id 过来都能删掉(越权)。这里把 owner 一起放进 WHERE,
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* 「不是这条任务的」一律返回 false,调用方据此回 404。
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*/
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public static function removeFrom(string $type, int $targetId, int $id): bool
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{
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if ($id <= 0) {
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return false;
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}
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$st = Database::get()->prepare(
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'SELECT COUNT(*) FROM attachments WHERE id = ? AND target_type = ? AND target_id = ?'
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);
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$st->execute([$id, $type, $targetId]);
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if ((int)$st->fetchColumn() <= 0) {
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return false;
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}
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self::remove($id);
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return true;
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}
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/**
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* 这个附件是「哪一类」—— 决定页面上画缩略图还是画图标、点开是预览还是下载。
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*
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* 返回:image / video / pdf / doc / xls / ppt / text / file
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*
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* ⚠️ 判据是**库里的 mime**(上传时由服务端嗅探内容得来),不看文件名后缀:
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* 改个后缀骗不过它,而"文档其实是张图"这种也认得出来。
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*/
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public static function kind(array $a): string
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{
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if ((int)($a['is_image'] ?? 0) === 1) {
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return 'image';
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}
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$mime = strtolower((string)($a['mime'] ?? ''));
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$name = strtolower((string)($a['name'] ?? ''));
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$ext = strtolower(pathinfo($name, PATHINFO_EXTENSION));
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if ($mime === '' && $ext !== '') {
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$mime = self::EXT_MIME[$ext] ?? '';
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}
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if (strpos($mime, 'video/') === 0) {
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return 'video';
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}
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if (strpos($mime, 'audio/') === 0) {
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return 'video'; // 音频用播放器放,与视频同一条路
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}
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if (strpos($mime, 'pdf') !== false || $ext === 'pdf') {
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return 'pdf';
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}
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if (strpos($mime, 'text/') === 0 || in_array($ext, ['txt', 'md', 'csv', 'log', 'json'], true)) {
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return 'text';
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}
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// Office 的 MIME 一长串且各家写法不一(含 -msword / officedocument / opendocument),
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// 扩展名反而更稳,所以这里两条路都认。
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if (self::inAny($mime . ' ' . $ext, ['word', 'doc', 'rtf', 'odt', 'wps'])) {
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return 'doc';
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}
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if (self::inAny($mime . ' ' . $ext, ['excel', 'sheet', 'xls', 'xlsx', 'csv', 'ods', 'et'])) {
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return 'xls';
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}
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if (self::inAny($mime . ' ' . $ext, ['powerpoint', 'presentation', 'ppt', 'pps', 'odp', 'dps'])) {
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return 'ppt';
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}
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return 'file';
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}
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/**
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* 能在**本页**直接预览吗。
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*
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* 图片与视频不用说;PDF 浏览器自带阅读器,也能直接看。
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* Word / Excel 之类浏览器渲染不了 —— 点了就下载(不装"点了没反应"的预览)。
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*/
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public static function previewable(array $a): bool
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{
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return in_array(self::kind($a), ['image', 'video', 'pdf'], true);
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}
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/** 这一类在人话里叫什么(图标上的角标、预览标题都用它) */
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public static function kindWord(string $kind): string
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{
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return self::KIND_WORDS[$kind] ?? '文件';
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}
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private const KIND_WORDS = [
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'image' => '图片', 'video' => '视频', 'pdf' => 'PDF',
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'doc' => 'Word', 'xls' => 'Excel', 'ppt' => 'PPT',
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'text' => '文本', 'file' => '文件',
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];
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/** 扩展名兜底用的 MIME 表(库里 mime 为空时) */
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private const EXT_MIME = [
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'pdf' => 'application/pdf', 'txt' => 'text/plain', 'md' => 'text/markdown',
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'csv' => 'text/csv', 'json' => 'application/json',
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'mp4' => 'video/mp4', 'm4v' => 'video/mp4', 'webm' => 'video/webm',
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'mov' => 'video/quicktime', 'avi' => 'video/x-msvideo', 'mkv' => 'video/x-matroska',
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'mp3' => 'audio/mpeg', 'm4a' => 'audio/mp4', 'wav' => 'audio/wav',
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'doc' => 'application/msword',
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'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
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'xls' => 'application/vnd.ms-excel',
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'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
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'ppt' => 'application/vnd.ms-powerpoint',
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'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
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'zip' => 'application/zip', 'rar' => 'application/x-rar-compressed',
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];
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private static function inAny(string $hay, array $needles): bool
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{
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foreach ($needles as $n) {
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if (strpos($hay, $n) !== false) {
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return true;
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}
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}
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return false;
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}
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/** 人话的大小 */
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public static function sizeWord($bytes): string
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{
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$b = (int)$bytes;
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if ($b <= 0) {
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return '';
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}
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if ($b < 1024) {
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return $b . ' B';
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}
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if ($b < 1024 * 1024) {
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return round($b / 1024, 1) . ' KB';
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}
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return round($b / 1024 / 1024, 1) . ' MB';
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}
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private static function safeName(string $n): string
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{
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$n = str_replace(['\\', '/', ':', '*', '?', '"', '<', '>', '|'], '', $n);
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$n = trim(preg_replace('/\s+/u', ' ', $n));
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return mb_substr($n, 0, 180, 'UTF-8');
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}
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private static function nextPosition(string $type, int $targetId): int
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{
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$st = Database::get()->prepare(
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'SELECT COALESCE(MAX(position),0)+10 FROM attachments WHERE target_type = ? AND target_id = ?'
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);
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$st->execute([$type, $targetId]);
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return (int)$st->fetchColumn();
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}
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}
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