# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1741131712 0
# Node ID 9cd468f6872c5ad5cbdc88a68c24f9393c1a4e5d
# Parent  8b7ba6f4a85ed00b69641bb41a297d56e550eb93
trau-parse: AMR 5k90 CRC

diff -r 8b7ba6f4a85e -r 9cd468f6872c trau-decode/parse-amr.c
--- a/trau-decode/parse-amr.c	Tue Mar 04 22:44:37 2025 +0000
+++ b/trau-decode/parse-amr.c	Tue Mar 04 23:41:52 2025 +0000
@@ -67,6 +67,30 @@
 decode_mode_2(c_bits, d_bits)
 	ubit_t *c_bits, *d_bits;
 {
+	ubit_t crc_collect[54];
+	int crc1, crc2, crc3, crc4;
+
+	bcopy(c_bits, crc_collect, 25);
+	bcopy(d_bits + 41, crc_collect + 25, 17);
+	bcopy(d_bits + 67, crc_collect + 42, 8);
+	bcopy(d_bits + 88, crc_collect + 50, 4);
+	crc1 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 54,
+					d_bits + 92);
+	bcopy(d_bits + 95, crc_collect, 3);
+	bcopy(d_bits + 112, crc_collect + 3, 4);
+	crc2 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 7,
+					d_bits + 116);
+	bcopy(d_bits + 119, crc_collect, 8);
+	bcopy(d_bits + 140, crc_collect + 8, 4);
+	crc3 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 12,
+					d_bits + 144);
+	bcopy(d_bits + 147, crc_collect, 3);
+	bcopy(d_bits + 164, crc_collect + 3, 4);
+	crc4 = osmo_crc8gen_check_bits(&gsm0860_amr_crc3, crc_collect, 7,
+					d_bits + 168);
+	printf("    CRC %s %s %s %s\n",
+		crc1 ? "bad" : "good", crc2 ? "bad" : "good",
+		crc3 ? "bad" : "good", crc4 ? "bad" : "good");
 }
 
 static void