How to use a simple array of filenames as source?

Hi all,

I have to migrate a folder of images in media images in my new site.

The problem is that I don't have a sql, or json or xml source, simply I have an array containing all images filenames.

Please can you suggest me what kind of migrate source class I have to use?

Here's what I did:

class myImagesMigration extends myMigration {
  public function __construct() {
    parent::__construct();
    $this->description = t('Embedded images in articles body');

    $this->map = new MigrateSQLMap($this->machineName,
      array(
        'filename' => array(
          'type' => 'varchar',
          'length' => 255,
          'not null' => TRUE,
          'description' => 'Image filename',
        )
      ),
      MigrateDestinationMedia::getKeySchema()
    );

    // Source fields:.
    $fields = array(
      'filename' => t('Image filename, relative to the source directory'),
    );

    // All source images were previous copied in a defined folder:
    $dir_path = '/var/www/mysite/sites/default/files/old_server/source_files';
    
    // source folder contains only .jpg files: grab all image names with scandir:
    $images = array_diff(scandir($dir_path), array('..', '.')); 

    $this->source = new Migrate...... ($images); <= WHAT MIGRATE SOURCE?!?!?!**********************

    $this->destination = new MigrateDestinationMedia('image');

    $this->addFieldMapping('source_dir')
            ->defaultValue($dir_path);
    
    
    $this->addFieldMapping('value', 'filename');


    $this->addFieldMapping('uid')
            ->defaultValue(1);

    $this->addUnmigratedDestinations(array('field_image_description:format',
      'field_image_description:language', 'destination_dir', 'destination_file',
      'file_replace', 'preserve_files', 'timestamp'));

  }
}

Thank you very much for helping me