diff --git a/libstream/libstream.h b/libstream/libstream.h
new file mode 100644
index 0000000..af089a0
--- /dev/null
+++ b/libstream/libstream.h
@@ -0,0 +1,44 @@
+/*
+ *
+ * (c) 2005 Laurent Vivier <LaurentVivier@wanadoo.fr>
+ *
+ */
+#ifndef __LIBSTREAM_H__
+#define __LIBSTREAM_H__
+
+#include <sys/types.h>
+#include <unistd.h>
+
+typedef int (*stream_read_sector_t)(void *data,off_t offset, void* buffer, size_t size);
+typedef ssize_t (*stream_read_t)(void *data, void *buf, size_t count);
+typedef int (*stream_seek_t)(void *data, long offset, int whence);
+typedef int (*stream_close_t)(void *data);
+
+typedef struct {
+	void *data;
+	stream_read_sector_t read_sector;
+	stream_close_t close;
+} device_io_t;
+
+typedef struct {
+	void *data;
+	stream_read_t read;
+	stream_seek_t seek;
+	stream_close_t close;
+} filesystem_io_t;
+
+typedef struct {
+	/* device interface */
+
+	device_io_t device;
+
+	/* filesystem interface */
+
+	filesystem_io_t fs;
+} stream_t;
+
+extern stream_t *stream_open(char *dev);
+extern int stream_read_sector(stream_t *stream,
+			     off_t offset, void* buffer, size_t size);
+extern int stream_close(stream_t *stream);
+#endif /* __LIBSTREAM_H__ */