diff --git a/src/IO/FileStream.php b/src/IO/FileStream.php
new file mode 100644
index 0000000..b1e0aa1
--- /dev/null
+++ b/src/IO/FileStream.php
@@ -0,0 +1,12 @@
+<?php
+namespace GIFEndec\IO;
+
+class FileStream extends PhpStream
+{
+    public function __construct($path, $mode = 'rb')
+    {
+        $this->phpStream = fopen($path, $mode);
+        stream_set_read_buffer($this->phpStream, 1024*1024);
+        $this->seek(0);
+    }
+}
diff --git a/src/IO/MemoryStream.php b/src/IO/MemoryStream.php
new file mode 100644
index 0000000..97150c5
--- /dev/null
+++ b/src/IO/MemoryStream.php
@@ -0,0 +1,10 @@
+<?php
+namespace GIFEndec\IO;
+
+class MemoryStream extends PhpStream
+{
+    public function __construct()
+    {
+        $this->phpStream = fopen('php://memory', 'wb+');
+    }
+}
diff --git a/src/MemoryStream.php b/src/IO/PhpStream.php
similarity index 84%
rename from src/MemoryStream.php
rename to src/IO/PhpStream.php
index db65d88..7bbbe2d 100644
--- a/src/MemoryStream.php
+++ b/src/IO/PhpStream.php
@@ -1,30 +1,13 @@
 <?php
-namespace GIFEndec;
+namespace GIFEndec\IO;
 
-class MemoryStream
+abstract class PhpStream
 {
-    /**
-     * @var string Bytes array
-     */
-    protected $bytes;
-
     /**
      * @var resource
      */
     protected $phpStream;
 
-    public function __construct()
-    {
-        $this->phpStream = fopen("php://memory", "wb+");
-    }
-
-    public function loadFromFile($path)
-    {
-        $this->phpStream = fopen($path, 'rb');
-        stream_set_read_buffer($this->phpStream, 1024*1024);
-        $this->seek(0);
-    }
-
     /**
      * @param int $bytesCount How many bytes to read
      * @param array $buffer Reference to buffer array where read bytes will be written
@@ -109,4 +92,4 @@ public function hasReachedEOF()
     {
         return feof($this->phpStream);
     }
-}
\ No newline at end of file
+}