1 files changed, 19 insertions, 0 deletions
diff --git a/lib/base/idatasource.h b/lib/base/idatasource.h
new file mode 100644
index 00000000..0daa5267
--- /dev/null
+++ b/lib/base/idatasource.h
@@ -0,0 +1,19 @@
+#ifndef __lib_base_idatasource_h
+#define __lib_base_idatasource_h
+
+#include <lib/base/object.h>
+
+class iDataSource: public iObject
+{
+public:
+	 /* NOTE: should only be used to get current position or filelength */
+	virtual off_t lseek(off_t offset, int whence)=0;
+	
+	/* NOTE: you must be able to handle short reads! */
+	virtual ssize_t read(off_t offset, void *buf, size_t count)=0; /* NOTE: this is what you in normal case have to use!! */
+
+	virtual off_t length()=0;
+	virtual int valid()=0;
+};
+
+#endif