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<?php
/**
* @copyright 2020 Podlibre
* @license https://www.gnu.org/licenses/agpl-3.0.en.html AGPL3
* @link https://castopod.org/
*/
use JamesHeinrich\GetID3\GetID3;
use JamesHeinrich\GetID3\WriteTags;
/**
* Gets audio file metadata and ID3 info
*
* @param UploadedFile $file
*
* @return array
*/
function get_file_tags($file)
{
$getID3 = new GetID3();
$FileInfo = $getID3->analyze($file);
return [
'filesize' => $FileInfo['filesize'],
'mime_type' => $FileInfo['mime_type'],
'playtime_seconds' => $FileInfo['playtime_seconds'],
'attached_picture' => array_key_exists('comments', $FileInfo)
? $FileInfo['comments']['picture'][0]['data']
: null,
];
}
/**
* Write audio file metadata / ID3 tags
*
* @param App\Entities\Podcast $podcast
* @param App\Entities\Episode $episode
*
* @return UploadedFile
*/
function write_file_tags($podcast, $episode)
{
$TextEncoding = 'UTF-8';
// Initialize getID3 tag-writing module
$tagwriter = new WriteTags();
$tagwriter->filename = media_path($episode->enclosure_url);
// set various options (optional)
$tagwriter->tagformats = ['id3v2.4'];
$tagwriter->tag_encoding = $TextEncoding;
$cover = new \CodeIgniter\Files\File(media_path($episode->image));
$APICdata = file_get_contents($cover->getRealPath());
// TODO: variables used for podcast specific tags
// $podcast_url = base_url('@' . $podcast->name);
// $podcast_feed_url = base_url('@' . $podcast->name . '/feed.xml');
// $episode_media_url = media_url($podcast->name . '/' . $episode->slug);
// populate data array
$TagData = [
'title' => [$episode->title],
'artist' => [$podcast->author],
'album' => [$podcast->title],
'year' => [$episode->pub_date->format('Y')],
'genre' => ['Podcast'],
'comment' => [$episode->description],
'track_number' => [strval($episode->number)],
'copyright_message' => [$podcast->copyright],
'publisher' => ['Podlibre'],
'encoded_by' => ['Castopod'],
// TODO: find a way to add the remaining tags for podcasts as the library doesn't seem to allow it
// 'website' => [$podcast_url],
// 'podcast' => [],
// 'podcast_identifier' => [$episode_media_url],
// 'podcast_feed' => [$podcast_feed_url],
// 'podcast_description' => [$podcast->description],
];
$TagData['attached_picture'][] = [
'picturetypeid' => 2, // Cover. More: module.tag.id3v2.php
'data' => $APICdata,
'description' => 'cover',
'mime' => $cover->getMimeType(),
];
$tagwriter->tag_data = $TagData;
// write tags
if ($tagwriter->WriteTags()) {
echo 'Successfully wrote tags<br>';
if (!empty($tagwriter->warnings)) {
echo 'There were some warnings:<br>' .
implode('<br><br>', $tagwriter->warnings);
}
} else {
echo 'Failed to write tags!<br>' .
implode('<br><br>', $tagwriter->errors);
}
}