295 lines
11 KiB
PHP
295 lines
11 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* @copyright Copyright (c) 2022 Varun Patil <radialapps@gmail.com>
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* @author Varun Patil <radialapps@gmail.com>
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* @license AGPL-3.0-or-later
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace OCA\Memories\Controller;
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use OCA\Memories\Exif;
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use OCP\AppFramework\Http;
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use OCP\AppFramework\Http\DataDisplayResponse;
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use OCP\AppFramework\Http\JSONResponse;
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use OCP\Files\File;
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class VideoController extends ApiBase
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{
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/**
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* @NoAdminRequired
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*
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* @NoCSRFRequired
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*
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* Transcode a video to HLS by proxy
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*/
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public function transcode(string $client, string $fileid, string $profile): Http\Response
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{
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$user = $this->userSession->getUser();
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if (null === $user) {
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return new JSONResponse([], Http::STATUS_PRECONDITION_FAILED);
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}
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// Make sure not running in read-only mode
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if (false !== $this->config->getSystemValue('memories.no_transcode', 'UNSET')) {
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return new JSONResponse(['message' => 'Transcoding disabled'], Http::STATUS_FORBIDDEN);
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}
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// Check client identifier is 8 characters or more
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if (\strlen($client) < 8) {
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return new JSONResponse(['message' => 'Invalid client identifier'], Http::STATUS_BAD_REQUEST);
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}
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// Get file
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$files = $this->rootFolder->getUserFolder($user->getUID())->getById($fileid);
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if (0 === \count($files)) {
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return new JSONResponse(['message' => 'File not found'], Http::STATUS_NOT_FOUND);
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}
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$file = $files[0];
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if (!($file->getPermissions() & \OCP\Constants::PERMISSION_READ)) {
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return new JSONResponse(['message' => 'File not readable'], Http::STATUS_FORBIDDEN);
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}
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// Local files only for now
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if (!$file->getStorage()->isLocal()) {
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return new JSONResponse(['message' => 'External storage not supported'], Http::STATUS_FORBIDDEN);
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}
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// Get file path
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$path = $file->getStorage()->getLocalFile($file->getInternalPath());
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if (!$path || !file_exists($path)) {
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return new JSONResponse(['message' => 'File not found'], Http::STATUS_NOT_FOUND);
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}
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// Check if file starts with temp dir
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$tmpDir = sys_get_temp_dir();
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if (0 === strpos($path, $tmpDir)) {
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return new JSONResponse(['message' => 'File is in temp dir!'], Http::STATUS_NOT_FOUND);
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}
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// Make upstream request
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$returnCode = $this->getUpstream($client, $path, $profile);
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// If status code was 0, it's likely the server is down
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// Make one attempt to start if we can't find the process
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if (0 === $returnCode) {
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$transcoder = $this->config->getSystemValue('memories.transcoder', false);
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if (!$transcoder) {
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return new JSONResponse(['message' => 'Transcoder not configured'], Http::STATUS_INTERNAL_SERVER_ERROR);
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}
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// Make transcoder executable
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if (!is_executable($transcoder)) {
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chmod($transcoder, 0755);
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}
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// Check for environment variables
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$env = '';
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// QSV with VAAPI
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$vaapi = $this->config->getSystemValue('memories.qsv', false);
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if ($vaapi) {
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$env .= 'VAAPI=1 ';
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}
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// Paths
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$ffmpegPath = $this->config->getSystemValue('memories.ffmpeg_path', 'ffmpeg');
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$ffprobePath = $this->config->getSystemValue('memories.ffprobe_path', 'ffprobe');
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$tmpPath = $this->config->getSystemValue('memories.tmp_path', sys_get_temp_dir());
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$env .= "FFMPEG='{$ffmpegPath}' FFPROBE='{$ffprobePath}' GOVOD_TEMPDIR='{$tmpPath}/go-vod' ";
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// Check if already running
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exec("pkill {$transcoder}");
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shell_exec("{$env} nohup {$transcoder} > {$tmpPath}/go-vod.log 2>&1 & > /dev/null");
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// wait for 1s and try again
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sleep(1);
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$returnCode = $this->getUpstream($client, $path, $profile);
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}
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// Check data was received
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if (200 !== $returnCode) {
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return new JSONResponse(['message' => 'Transcode failed'], Http::STATUS_INTERNAL_SERVER_ERROR);
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}
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// The response was already streamed, so we have nothing to do here
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exit;
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}
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/**
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* @NoAdminRequired
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*
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* @NoCSRFRequired
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*
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* Return the live video part of a live photo
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*/
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public function livephoto(string $fileid)
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{
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$fileid = (int) $fileid;
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$files = $this->rootFolder->getById($fileid);
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if (0 === \count($files)) {
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return new JSONResponse(['message' => 'File not found'], Http::STATUS_NOT_FOUND);
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}
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$file = $files[0];
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// Check file etag
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$etag = $file->getEtag();
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if ($etag !== $this->request->getParam('etag')) {
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return new JSONResponse(['message' => 'File changed'], Http::STATUS_PRECONDITION_FAILED);
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}
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// Check file liveid
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$liveid = $this->request->getParam('liveid');
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if (!$liveid) {
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return new JSONResponse(['message' => 'Live ID not provided'], Http::STATUS_BAD_REQUEST);
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}
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// Response data
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$name = '';
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$blob = null;
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$mime = '';
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// Video is inside the file
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$path = null;
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if (str_starts_with($liveid, 'self__')) {
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$path = $file->getStorage()->getLocalFile($file->getInternalPath());
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$mime = 'video/mp4';
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$name = $file->getName().'.mp4';
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}
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// Different manufacurers have different formats
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if ('self__trailer' === $liveid) {
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try { // Get trailer
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$blob = Exif::getBinaryExifProp($path, '-trailer');
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} catch (\Exception $e) {
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return new JSONResponse(['message' => 'Trailer not found'], Http::STATUS_NOT_FOUND);
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}
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} elseif ('self__embeddedvideo' === $liveid) {
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try { // Get embedded video file
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$blob = Exif::getBinaryExifProp($path, '-EmbeddedVideoFile');
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} catch (\Exception $e) {
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return new JSONResponse(['message' => 'Embedded video not found'], Http::STATUS_NOT_FOUND);
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}
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} else {
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// Get stored video file (Apple MOV)
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$lp = $this->timelineQuery->getLivePhoto($fileid);
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if (!$lp || $lp['liveid'] !== $liveid) {
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return new JSONResponse(['message' => 'Live ID not found'], Http::STATUS_NOT_FOUND);
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}
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// Get and return file
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$liveFileId = (int) $lp['fileid'];
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$files = $this->rootFolder->getById($liveFileId);
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if (0 === \count($files)) {
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return new JSONResponse(['message' => 'Live file not found'], Http::STATUS_NOT_FOUND);
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}
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$liveFile = $files[0];
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if ($liveFile instanceof File) {
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// Requested only JSON info
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if ('json' === $this->request->getParam('format')) {
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return new JSONResponse($lp);
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}
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$name = $liveFile->getName();
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$blob = $liveFile->getContent();
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$mime = $liveFile->getMimeType();
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if ($this->request->getParam('transcode') && !$this->config->getSystemValue('memories.no_transcode', true)) {
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// Only Apple uses HEVC for now, so pass this to the transcoder
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// If this is H.264 it won't get transcoded anyway
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$liveVideoPath = $liveFile->getStorage()->getLocalFile($liveFile->getInternalPath());
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if ($this->getUpstream('livephoto', $liveVideoPath, 'max.mp4')) {
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exit;
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}
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}
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}
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}
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// Data not found
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if (!$blob) {
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return new JSONResponse(['message' => 'Live file not found'], Http::STATUS_NOT_FOUND);
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}
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// Make and send response
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$response = new DataDisplayResponse($blob, Http::STATUS_OK, []);
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$response->setHeaders([
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'Content-Type' => $mime,
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'Content-Disposition' => "attachment; filename=\"{$name}\"",
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]);
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$response->cacheFor(3600 * 24, false, false);
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return $response;
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}
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private function getUpstream($client, $path, $profile)
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{
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$path = rawurlencode($path);
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$ch = curl_init("http://127.0.0.1:47788/{$client}{$path}/{$profile}");
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
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curl_setopt($ch, CURLOPT_HEADER, 0);
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// Catch connection abort here
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ignore_user_abort(true);
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// Stream the response to the browser without reading it into memory
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$headersWritten = false;
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curl_setopt($ch, CURLOPT_WRITEFUNCTION, function ($curl, $data) use (&$headersWritten, $profile) {
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$returnCode = (int) curl_getinfo($curl, CURLINFO_HTTP_CODE);
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if (200 === $returnCode) {
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// Write headers if just got the first chunk of data
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if (!$headersWritten) {
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$headersWritten = true;
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$contentType = curl_getinfo($curl, CURLINFO_CONTENT_TYPE);
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header("Content-Type: {$contentType}");
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if (str_ends_with($profile, 'mp4')) {
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// cache full video 24 hours
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header('Cache-Control: max-age=86400, public');
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} else {
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// no caching of segments
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header('Cache-Control: no-cache, no-store, must-revalidate');
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}
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http_response_code($returnCode);
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}
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echo $data;
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ob_flush();
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flush();
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if (connection_aborted()) {
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return -1; // stop the transfer
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}
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}
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return \strlen($data);
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});
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// Start the request
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curl_exec($ch);
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$returnCode = (int) curl_getinfo($ch, CURLINFO_HTTP_CODE);
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curl_close($ch);
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return $returnCode;
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}
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}
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