# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1712175337 0
# Node ID b55451463161cb3c2471f114af38307ae1d9d626
# Parent  6ac30bef2b4b79dbd2c48be8f1bc7c89da96805d
amrdiff: recognize DHF transform

diff -r 6ac30bef2b4b -r b55451463161 amrdiff/amrdiff.c
--- a/amrdiff/amrdiff.c	Wed Apr 03 20:10:38 2024 +0000
+++ b/amrdiff/amrdiff.c	Wed Apr 03 20:15:37 2024 +0000
@@ -12,6 +12,26 @@
 #include "etsi.h"
 #include "amr_defs.h"
 
+const uint8_t amr122_dhf_bits[244] = {
+0,0,0,0,1,0,0,0,0,1,0,1,0,1,0,0,1,1,0,1,1,0,1,1,1,0,0,1,0,1,1,0,1,0,1,0,1,0,1,0,
+1,0,1,0,1,1,0,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,1,1,0,1,1,0,1,0,1,1,0,0,0,0,1,1,1,1,1,1,1,0,1,1,0,0,1,1,0,
+1,0,0,0,0,0,1,1,0,1,1,1,1,0,0,1,0,1,0,0,0,0,0,0,1,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,
+0,0,0,1,0,1,0,1,1,0,0,0,0,1,0,1,0,1,0,0,1,1,1,1,0,0,0,1,0,0,0,0,1,1,1,1,0,1,1,0,
+1,0,1,1,0,0,0,0,0,0,1,0,0,1,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,1,1,1,1,1,1,0,1,0,1,0,
+0,0,0,0
+};
+
+const uint8_t efr_dhf_bits[244] = {
+0,0,0,0,1,0,0,0,0,1,0,1,1,1,1,0,1,0,1,1,0,1,0,0,1,0,0,1,0,0,0,0,1,1,1,1,1,0,1,0,
+1,0,1,0,1,1,0,1,0,1,1,0,0,0,0,0,0,0,1,1,1,1,1,0,0,0,1,1,1,0,1,0,0,0,0,1,1,0,0,0,
+0,1,1,0,0,0,0,0,0,1,1,1,1,0,1,1,0,0,0,0,1,1,0,0,0,1,0,0,0,0,1,0,1,1,0,0,0,0,0,0,
+1,0,0,0,0,0,0,0,0,1,0,0,1,0,0,0,0,0,0,0,0,1,0,1,0,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,1,1,0,
+1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,
+};
+
 main(argc, argv)
 	char **argv;
 {
@@ -99,7 +119,12 @@
 				amr_sp, efr_sp);
 			continue;
 		}
-		if (bcmp(amr_bits+1, efr_bits, 244))
+		if (!bcmp(amr_bits+1, efr_bits, 244))
+			continue;
+		if (!bcmp(amr_bits+1, amr122_dhf_bits, 244) &&
+		    !bcmp(efr_bits, efr_dhf_bits, 244))
+			printf("frame #%u: DHF transform\n", frame_no);
+		else
 			printf("frame #%u: bits differ\n", frame_no);
 	}
 	exit(0);