adb: make adb mmap/stream parser more united, add ADB_BLOCK_DATAX

Harden the error checking of expected block types and their order.
Add ADB_BLOCK_DATAX as reserved for >1GB blocks.

1 files changed, 3 insertions, 2 deletions

diff --git a/src/adb.h b/src/adb.h
index 146ad07..051245c 100644
--- a/src/adb.h
+++ b/src/adb.h
@@ -54,8 +54,9 @@ struct adb_header {
 /* Blocks */
 #define ADB_BLOCK_ALIGNMENT	8
 #define ADB_BLOCK_ADB		0
-#define ADB_BLOCK_SIG		2
-#define ADB_BLOCK_DATA		3
+#define ADB_BLOCK_SIG		1
+#define ADB_BLOCK_DATA		2
+#define ADB_BLOCK_DATAX		3
 
 struct adb_block {
 	uint32_t type_size;