memories/lib/Controller/VideoController.php

304 lines
11 KiB
PHP

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