Detect encrypted ADXes. (David Korth)

magic/Magdir/audio

@@ -1,6 +1,6 @@
 
 #------------------------------------------------------------------------------
-# $File: audio,v 1.87 2018/06/23 16:36:04 christos Exp $
+# $File: audio,v 1.88 2018/06/23 16:36:15 christos Exp $
 # audio:  file(1) magic for sound formats (see also "iff")
 #
 # Jan Nicolai Langfeldt (janl@ifi.uio.no), Dan Quinlan (quinlan@yggdrasil.com),
@@ -864,17 +864,18 @@
 # https://en.wikipedia.org/wiki/ADX_(file_format)
 # https://wiki.multimedia.cx/index.php/CRI_ADX_file
 # Added by David Korth <gerbilsoft@gerbilsoft.com>
-0x00		beshort	0x8000
->(2.S-2)	string	(c)CRI		CRI ADX ADPCM audio
->>0x12		byte	x		v%u
->>0x04		byte	0x02		\b, pre-set prediction coefficients
->>0x04		byte	0x03		\b, standard ADX
->>0x04		byte	0x04		\b, exponential scale
->>0x04		byte	0x05		\b, AHX
->>0x08		belong	x		\b, %u Hz
->>0x12		byte	0x03
->>>0x02		beshort	>0x2B
->>>>0x18	belong	!0		\b, looping
->>0x12		byte	0x04
->>>0x02		beshort	>0x37
->>>>0x24	belong	!0		\b, looping
+0x00		beshort		0x8000
+>(2.S-2)	string		(c)CRI		CRI ADX ADPCM audio
+>>0x12		byte		x		v%u
+>>0x04		byte		0x02		\b, pre-set prediction coefficients
+>>0x04		byte		0x03		\b, standard ADX
+>>0x04		byte		0x04		\b, exponential scale
+>>0x04		byte		0x05		\b, AHX
+>>0x08		belong		x		\b, %u Hz
+>>0x12		byte		0x03
+>>>0x02		beshort		>0x2B
+>>>>0x18	belong		!0		\b, looping
+>>0x12		byte		0x04
+>>>0x02		beshort		>0x37
+>>>>0x24	belong		!0		\b, looping
+>>0x13		byte&0x08	0x08		\b, encrypted