--- /dev/null
+/* IStream.h */
+
+#ifndef __C_ISTREAM_H
+#define __C_ISTREAM_H
+
+#include "Types.h"
+
+typedef struct _ISeqInStream
+{
+ HRes (*Read)(void *object, void *data, UInt32 size, UInt32 *processedSize);
+} ISeqInStream;
+
+typedef struct _ISzAlloc
+{
+ void *(*Alloc)(size_t size);
+ void (*Free)(void *address); /* address can be 0 */
+} ISzAlloc;
+
+#endif