1 files changed, 23 insertions, 8 deletions
diff --git a/plugins/AdvaImg/src/FreeImageIO.h b/plugins/AdvaImg/src/FreeImageIO.h
index b251d474f6..c846b5bf0a 100644
--- a/plugins/AdvaImg/src/FreeImageIO.h
+++ b/plugins/AdvaImg/src/FreeImageIO.h
@@ -29,16 +29,31 @@
 // ----------------------------------------------------------
 
 FI_STRUCT (FIMEMORYHEADER) {
-	/// remember to delete the buffer
+	/**
+	Flag used to remember to delete the 'data' buffer.
+	When the buffer is a wrapped buffer, it is read-only, no need to delete it. 
+	When the buffer is a read/write buffer, it is allocated dynamically and must be deleted when no longer needed.
+	*/
 	BOOL delete_me;
-	/// file length
-	long filelen;
-	/// buffer size
-	long datalen;
-	/// current position
-	long curpos;
-	/// start buffer address
+	/**
+	file_length is equal to the input buffer size when the buffer is a wrapped buffer, i.e. file_length == data_length. 
+	file_length is the amount of the written bytes when the buffer is a read/write buffer.
+	*/
+	long file_length;
+	/**
+	When using read-only input buffers, data_length is equal to the input buffer size, i.e. the file_length.
+	When using read/write buffers, data_length is the size of the allocated buffer, 
+	whose size is greater than or equal to file_length.
+	*/
+	long data_length;
+	/**
+	start buffer address
+	*/
 	void *data;
+	/**
+	Current position into the memory stream
+	*/
+	long current_position;
 };
 
 void SetDefaultIO(FreeImageIO *io);