include/ddk: Add DVD_DESCRIPTOR_HEADER descriptor structure.
diff --git a/include/ddk/ntddcdvd.h b/include/ddk/ntddcdvd.h
index 5313496..f6ce77b 100644
--- a/include/ddk/ntddcdvd.h
+++ b/include/ddk/ntddcdvd.h
@@ -113,7 +113,13 @@
/* From 0 to 4 */
UCHAR LayerNumber;
-}DVD_READ_STRUCTURE, * PDVD_READ_STRUCTURE;
+} DVD_READ_STRUCTURE, *PDVD_READ_STRUCTURE;
+
+typedef struct _DVD_DESCRIPTOR_HEADER {
+ USHORT Length;
+ UCHAR Reserved[2];
+} DVD_DESCRIPTOR_HEADER, *PDVD_DESCRIPTOR_HEADER;
+C_ASSERT(sizeof(DVD_DESCRIPTOR_HEADER) == 4);
typedef struct _DVD_LAYER_DESCRIPTOR
{
@@ -154,6 +160,7 @@
/* 0 indicates no BCA data */
UCHAR BCAFlag : 1;
}DVD_LAYER_DESCRIPTOR, * PDVD_LAYER_DESCRIPTOR;
+C_ASSERT(sizeof(DVD_LAYER_DESCRIPTOR) == 17);
typedef struct _DVD_COPYRIGHT_DESCRIPTOR
{