MediaException.php: add

inc/Service/Media/MediaException.php

@@ -0,0 +1,30 @@
+<?php
+namespace Vichan\Service\Media;
+
+
+class MediaException extends \RuntimeException {
+	/**
+	 * Could not open a file.
+	 */
+	public const ERR_NO_OPEN = 0;
+	/**
+	 * No media handler available for the given mime.
+	 */
+	public const ERR_NO_HANDLER = 1;
+	/**
+	 * Image width and/or height too large.
+	 */
+	public const ERR_IMAGE_TOO_LARGE = 2;
+	/**
+	 * Error while computing a media file.
+	 */
+	public const ERR_COMPUTE_ERR = 3;
+	/**
+	 * I/O error.
+	 */
+	public const ERR_IO_ERR = 4;
+	/**
+	 * Bad media type (mime) supplied to the handler.
+	 */
+	public const ERR_BAD_MEDIA_TYPE = 5;
+}