README

This package is an object oriented PHP wrapper for acoustid.org API.

Installation

Just require this package using Composer:

composer require mrfeathers/acoustid

Usage

Create an instance of AcoustIdClient:

$apiKey = 'here is your api key';
$acoustidClient = AcoustidFactory::create($apiKey);

Also, you can create client without api key. In this case, you are able to use listByMBId method, that doesn't need api key. All other methods throws an exception in this case.

Now you're ready!

So, acoustid.org has some available actions, that are represented in the package client:

• Lookup by fingerprint

If you have an audio fingerprint generated by Chromaprint, you can use this method to lookup the MusicBrainz metadata associated with this fingerprint.

$fingerPrintContent = 'fingerprint string generated by Chromaprint';
$fingerPrintDuration = 100;

//meta can be empty, it's not required
$meta = [
   Meta::RECORDINGS,
   Meta::RELEASES,
];
 
$resultCollection = $acoustidClient->lookupByFingerPrint($fingerPrintContent, $fingerPrintDuration, $meta);

You will get an instance of class ResultCollection, contains several (or one) objects of Result class. ResultCollection is iterable, so you can just use it as array:

foreach($resultCollection as $result) {
   //do something
}

• Lookup by track id

You can also look up data connected to a track ID, witch is a cluster of fingerprints.

 //track id is a simple uuid string
 $trackId = '08268577-90f3-4ed5-8154-5768e2091554';
 //meta can be empty, it's not required
 $meta = [
    Meta::RECORDINGS,
    Meta::RELEASES,
 ];
 
 $resultCollection = $acoustidClient->lookupByTrackId($trackId, $meta);

The result also will be ResultCollection.

• Submit fingerprint

The AcoustID database depends on user-submitted content. This method can be used to submit new audio fingerprints and their corresponding metadata to the database. Multiple fingerprints can be submitted in one call.

Submissions are processed asynchronously by a background job. However, this normally only takes a few seconds, so if your application needs to get the imported AcoustIDs back, you can use the wait parameter to wait until the submissions are imported. It is not guaranteed that the submissions will be imported on time, so your application must be able to handle the case when the submission is still in the "pending" status. You can look up the status of the pending submissions later (use method getSubmissionStatus).

While you can submit a fingerprint without any metadata, it is not very useful to do so. If the file has embedded MusicBrainz tags, please send the MusicBrainz recording ID. Otherwise you can send the textual metadata.

Use FingerPrintCollection instance as argument. This class is just a wrapper under array of FingerPrint objects.

//create collection of fingerprints
$fingerPrintCollection = new FingerPrintCollection([
   new FingerPrint('fingerprint string generated by Chromaprint', 100),
   new FingerPrint('fingerprint string generated by Chromaprint', 121),
]);

//also you can add FingerPrint later by addFingerPrint method
$fingerPrint = new FingerPrint('....', 200);

//FingerPrint object has a lot of additional fields, that you can set calling setters
$fingerPrint->setArtist('artist name')
   ->setAlbum('album name');

$fingerPrintCollection->addFingerPrint($fingerPrint);

$userApiKey = 'here is your personal user key';
//wait is not required and equls 1 by default. Use it if you need to wait until the submissions are imported
$wait = 1;

$submissionCollection = $acoustidClient->submit($fingerPrintCollection, $userApiKey, $wait);

You will get an instance of SubmissionCollection as a result. It's also iterable and contains one or more Submission objects.

• Get submission status

If you submitted an fingerprint and it was imported immediately, you can check the status of the submission by looking up the ID from the submit call.

//let's get submisstionCollection from the previous example
$submission = array_shift($submissionCollection);

$result = $acoustidClient->getSubmissionStatus($submission->getId());

The result also will be an instance of SubmissionCollection.

• List AcoustIDs by MBID

This method will return you a list of AcoustId id that are corresponding to MusicBrainz id.

Api key is not required for this method, so you can use client without key to call it

You can send one or more mbids. If you send one, than you'll get the result as instance of TrackCollection. If you send more than one - instance of MBIdCollection. Both are iterable.

$mbids = ['83b3d37d-8c3d-4a7b-ae9a-d635e4e3374f'];

$trackCollection = $acoustidClient->listByMBId($mbids);

//add one more mbid
$mbids[] = 'b00db402-51d2-4125-912b-c0eab9c6edd1';

//and you'll get MBIdCollection, each MBId object for each sent mbid
$mbidCollection = $acoustidClient->listByMBId($mbids);

Response models and Meta

Response models contain all known fields acoustid.org API can return. Unfortunately, acoustid.org doesn't have a full documentation for all possible response structures. So if you get an AcoustidSerializerException exception, please open an issue and provide method and parameters you used to call it.

Here's the descriptions of all response models:

• Artist
• Date
• MBId
• Medium
• Recording
• Release
• ReleaseEvent
• Result
• Submission
• Track

Collection response models:

• MBIdCollection
• ResultCollection
• SubmissionCollection
• TrackCollection

NB! Response models has a lot of fields, but some of them can be empty. It's because of scope of meta parameters you send to the method. Different scope of meta values can return different results. All available meta values you can find in the class Meta. It's highly recommended to use constants from Meta class for creating meta array.