Add Jpeg2000 format

README.md

@@ -94,6 +94,7 @@ $type = $sniffer->setFromPointer(fopen('images/image.jpg', 'r'))->getType();
 - Tagged Image File Format (TIFF)
 - Image encoded Photoshop Document file format (PSD)
 - AV1 Image File Format (AVIF)
+- JPEG 2000 File Format
 
 ### Archives
 

src/Types/ImageJpeg2000.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Intervention\MimeSniffer\Types;
+
+use Intervention\MimeSniffer\AbstractBinaryType;
+
+class ImageJpeg2000 extends AbstractBinaryType
+{
+    /**
+     * Name of content type
+     *
+     * @var string
+     */
+    public $name = 'image/jp2';
+
+    /**
+     * Signature pattern
+     *
+     * @var string
+     */
+    protected $pattern = "/^0000000C6A5020200D0A870A/";
+}

tests/ImageJpeg2000Test.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Intervention\MimeSniffer\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Intervention\MimeSniffer\MimeSniffer;
+use Intervention\MimeSniffer\Types\ImageJpeg2000;
+
+final class ImageJpeg2000Test extends TestCase
+{
+    public $sniffer;
+    public $type;
+
+    protected function setUp(): void
+    {
+        $this->sniffer = MimeSniffer::createFromFilename(__DIR__ . '/../tests/files/test.jp2');
+        $this->type = $this->sniffer->getType();
+    }
+
+    public function testType(): void
+    {
+        $this->assertInstanceOf(ImageJpeg2000::class, $this->type);
+    }
+
+    public function testIsImage(): void
+    {
+        $this->assertTrue($this->type->isImage());
+    }
+}