289 lines
9.4 KiB
PHP
289 lines
9.4 KiB
PHP
<?php
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class Media extends PhpObject {
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//DB Tables
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const MEDIA_TABLE = 'medias';
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//Media folders
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const MEDIA_FOLDER = 'files/';
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const THUMB_FOLDER = self::MEDIA_FOLDER.'thumbs/';
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const THUMB_MAX_WIDTH = 400;
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/**
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* Database Handle
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* @var Db
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*/
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private $oDb;
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/**
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* Media Project
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* @var Project
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*/
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private $oProject;
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private $asMedia;
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private $asMedias;
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private $sSystemType;
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private $iMediaId;
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public function __construct(Db &$oDb, &$oProject, $iMediaId=0) {
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parent::__construct(__CLASS__, Settings::DEBUG);
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$this->oDb = &$oDb;
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$this->oProject = &$oProject;
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$this->asMedia = array();
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$this->asMedias = array();
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$this->sSystemType = (substr(php_uname(), 0, 7) == "Windows")?'win':'unix';
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$this->setMediaId($iMediaId);
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}
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public function setMediaId($iMediaId) {
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$this->iMediaId = $iMediaId;
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}
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public function getMediaId() {
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return $this->iMediaId;
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}
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public function getProjectCodeName() {
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return $this->oProject->getProjectCodeName();
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}
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public function setComment($sComment) {
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$sError = '';
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$asData = array();
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if($this->iMediaId > 0) {
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$bResult = $this->oDb->updateRow(self::MEDIA_TABLE, $this->iMediaId, array('comment'=>$sComment));
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if(!$bResult) $sError = 'error_commit_db';
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else $asData = $this->getInfo();
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}
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else $sError = 'media_no_id';
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return Spot::getResult(($sError==''), $sError, $asData);
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}
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public function getMediasInfo($iMediaId=0) {
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$bOwnMedia = ($iMediaId > 0);
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if($bOwnMedia && empty($this->asMedia) || !$bOwnMedia && empty($this->asMedias)) {
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if($this->oProject->getProjectId()) {
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$asParams = array(
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'select' => array(Db::getId(self::MEDIA_TABLE), 'filename', 'taken_on', 'posted_on', 'timezone', 'rotate', 'type AS subtype', 'comment'),
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'from' => self::MEDIA_TABLE,
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'constraint'=> array(Db::getId(Project::PROJ_TABLE) => $this->oProject->getProjectId())
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);
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if($bOwnMedia) $asParams['constraint'][Db::getId(self::MEDIA_TABLE)] = $iMediaId;
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$asMedias = $this->oDb->selectRows($asParams);
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foreach($asMedias as &$asMedia) {
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$asMedia['media_path'] = self::getMediaPath($asMedia['filename']);
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$asMedia['thumb_path'] = $this->getMediaThumbnail($asMedia['filename']);
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}
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if(!empty($asMedias)) {
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if($bOwnMedia) $this->asMedia = array_shift($asMedias);
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else $this->asMedias = $asMedias;
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}
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}
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}
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return $bOwnMedia?$this->asMedia:$this->asMedias;
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}
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public function getInfo() {
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return $this->getMediasInfo($this->iMediaId);
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}
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public function isProjectModeValid() {
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return ($this->oProject->getMode() == Project::MODE_BLOG);
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}
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public function addMedia($sMediaName, $sMethod='upload') {
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$sError = '';
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$asParams = array();
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if(!$this->isProjectModeValid() && $sMethod!='sync') {
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$sError = 'upload_wrong_mode';
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$asParams[] = $this->oProject->getProjectCodeName();
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}
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elseif($this->oDb->pingValue(self::MEDIA_TABLE, array('filename'=>$sMediaName)) && $sMethod!='sync') {
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$sError = 'upload_media_exist';
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$asParams[] = $sMediaName;
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}
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else {
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$asMediaInfo = $this->getMediaInfoFromFile($sMediaName);
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//Converting times to DB Time Zone, by using date()
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$asDbInfo = array(
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Db::getId(Project::PROJ_TABLE) => $this->oProject->getProjectId(),
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'filename' => $sMediaName,
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'taken_on' => ($asMediaInfo['taken_ts'] > 0)?date(Db::TIMESTAMP_FORMAT, $asMediaInfo['taken_ts']):0,
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'posted_on' => date(Db::TIMESTAMP_FORMAT, $asMediaInfo['file_ts']),
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'timezone' => $asMediaInfo['timezone'],
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'rotate' => $asMediaInfo['rotate'],
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'type' => $asMediaInfo['type']
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);
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if($sMethod=='sync') $iMediaId = $this->oDb->insertUpdateRow(self::MEDIA_TABLE, $asDbInfo, array(Db::getId(Project::PROJ_TABLE), 'filename'));
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else $iMediaId = $this->oDb->insertRow(self::MEDIA_TABLE, $asDbInfo);
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if(!$iMediaId) $sError = 'error_commit_db';
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else {
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$this->setMediaId($iMediaId);
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$asParams = $this->getInfo(); //Creates thumbnail
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}
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}
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return Spot::getResult(($sError==''), $sError, $asParams);
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}
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/**
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* One-shot function to initialize DB with existing images
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*/
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public function syncFileFolder() {
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$asMediaPaths = glob(self::getMediaPath('*.{jpg,JPG,jpeg,JPEG,png,PNG,mov,MOV}'), GLOB_BRACE);
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foreach($asMediaPaths as $sMediaPath)
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{
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$sMediaName = pathinfo($sMediaPath, PATHINFO_BASENAME);
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$this->addMedia($sMediaName, 'sync');
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}
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$this->setExtractMode(PhpObject::MODE_HTML);
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return $this->getCleanMessageStack();
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}
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private function getMediaInfoFromFile($sMediaName)
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{
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$sMediaPath = self::getMediaPath($sMediaName);
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$sType = self::getMediaType($sMediaName);
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$iTimeStamp = $iTakenOn = 0;
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$iPostedOn = filemtime($sMediaPath);
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$sTimeZone = date_default_timezone_get();
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$sRotate = '0';
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$sTakenOn = '';
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switch($sType) {
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case 'video':
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$asResult = array();
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$sParams = implode(' ', array(
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'-loglevel error', //Remove comments
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'-select_streams v:0', //First video channel
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'-show_entries '. //filter tags : Creation Time & Rotation
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'format_tags=creation_time,com.apple.quicktime.creationdate'.':'.
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'stream_tags=rotate,creation_time',
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'-print_format json', //output format: json
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'-i' //input file
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));
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exec('ffprobe '.$sParams.' "'.$sMediaPath.'"', $asResult);
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$asExif = json_decode(implode('', $asResult), true);
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//Taken On
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if(isset($asExif['format']['tags']['com.apple.quicktime.creationdate'])) {
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$sTakenOn = $asExif['format']['tags']['com.apple.quicktime.creationdate']; //contains Time Zone
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$sTimeZone = Spot::getTimeZoneFromDate($sTakenOn) ?? $sTimeZone;
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}
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else $sTakenOn = $asExif['format']['tags']['creation_time'] ?? $asExif['streams'][0]['tags']['creation_time'];
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//Orientation
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if(isset($asExif['streams'][0]['tags']['rotate'])) $sRotate = $asExif['streams'][0]['tags']['rotate'];
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break;
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case 'image':
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$asExif = @exif_read_data($sMediaPath, 0, true);
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//Posted On
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if(array_key_exists('FILE', $asExif) && array_key_exists('FileDateTime', $asExif['FILE'])) $iPostedOn = $asExif['FILE']['FileDateTime'];
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//Taken On & Timezone
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if(array_key_exists('EXIF', $asExif)) {
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if(array_key_exists('DateTimeOriginal', $asExif['EXIF'])) $sTakenOn = $asExif['EXIF']['DateTimeOriginal'];
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/* Priorities:
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* 1. OffsetTimeOriginal: timezone for DateTimeOriginal (exif version >= 2.31)
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* 2. 0x9011: same as above, but unidentified
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* 3. Timezone extracted from DateTimeOriginal
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* 4. Uploader Browser Time Zone (PHP Default Time Zone)
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*/
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$sTimeZone = $asExif['EXIF']['OffsetTimeOriginal'] ?? $asExif['EXIF']['UndefinedTag:0x9011'] ?? Spot::getTimeZoneFromDate($sTakenOn) ?? $sTimeZone;
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}
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//Orientation
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if(array_key_exists('IFD0', $asExif) && array_key_exists('Orientation', $asExif['IFD0'])) {
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switch($asExif['IFD0']['Orientation'])
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{
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case 1: $sRotate = '0'; break; //None
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case 3: $sRotate = '180'; break; //Flip over
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case 6: $sRotate = '90'; break; //Clockwise
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case 8: $sRotate = '-90'; break; //Trigo
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}
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}
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break;
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}
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//Assign the correct Time Zone to $sTakenOn if it is not already contained in it. Then get Unix Timestamp
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//Time Zone (2nd parameter) will be ignored if already contained in $sTakenOn
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if($sTakenOn != '') {
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$oTakenOn = new DateTime($sTakenOn, new DateTimeZone($sTimeZone));
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$iTakenOn = $oTakenOn->format('U');
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}
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//Merge timestamps
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$iTimeStamp = ($iTakenOn > 0)?$iTakenOn:$iPostedOn;
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return array(
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'timestamp' => $iTimeStamp,
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'timezone' => $sTimeZone,
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'taken_ts' => $iTakenOn,
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'file_ts' => $iPostedOn,
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'rotate' => $sRotate,
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'type' => $sType
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);
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}
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private function getMediaThumbnail($sMediaName)
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{
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$sMediaPath = self::getMediaPath($sMediaName);
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$sThumbPath = self::getMediaPath($sMediaName, 'thumbnail');
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if(!file_exists($sThumbPath)) {
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$sType = self::getMediaType($sMediaName);
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switch($sType) {
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case 'image':
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$asThumbInfo = ToolBox::createThumbnail($sMediaPath, self::THUMB_MAX_WIDTH, 0, $sThumbPath);
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break;
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case 'video':
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//Get a screenshot of the video 1 second in
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$sTempPath = self::getMediaPath(uniqid('temp_').'.png');
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$asResult = array();
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$sParams = implode(' ', array(
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'-i "'.$sMediaPath.'"', //input file
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'-ss 00:00:01.000', //Image taken after x seconds
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'-vframes 1', //number of video frames to output
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'"'.$sTempPath.'"', //output file
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));
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exec('ffmpeg '.$sParams, $asResult);
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//Resize
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$asThumbInfo = ToolBox::createThumbnail($sTempPath, self::THUMB_MAX_WIDTH, 0, $sThumbPath, true);
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break;
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}
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}
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else $asThumbInfo = array('error'=>'', 'out'=>$sThumbPath);
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return ($asThumbInfo['error']=='')?$asThumbInfo['out']:$sMediaPath;
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}
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private static function getMediaPath($sMediaName, $sFileType='media') {
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if($sFileType=='thumbnail') return self::THUMB_FOLDER.$sMediaName.(strtolower(substr($sMediaName, -3))=='mov'?'.png':'');
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else return self::MEDIA_FOLDER.$sMediaName;
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}
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private static function getMediaType($sMediaName) {
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$sMediaPath = self::getMediaPath($sMediaName);
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$sMediaMime = mime_content_type($sMediaPath);
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switch($sMediaMime) {
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case 'video/quicktime': $sType = 'video'; break;
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default: $sType = 'image'; break;
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}
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return $sType;
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}
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}
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