libosmocoding: migrate transcoding routines from OsmoBTS

There are some projects, such as GR-GSM and OsmocomBB, which would
benefit from using one shared implementation of GSM 05.03 code. So,
this commit introduces a new sub-library called libosmocoding, which
(for now) provides GSM, GPRS and EDGE transcoding routines, migrated
from OsmoBTS.

The original GSM 05.03 code from OsmoBTS was relicensed under
GPLv2-or-later with permission of copyright holders (Andreas Eversberg,
Alexander Chemeris and Tom Tsou).

The following data types are currently supported:

 - xCCH
 - PDTCH (CS 1-4 and MCS 1-9)
 - TCH/FR
 - TCH/HR
 - TCH/AFS
 - RCH/AHS
 - RACH
 - SCH

Change-Id: I0c3256b87686d878e4e716d12393cad5924fdfa1

2 files changed, 522 insertions, 0 deletions

diff --git a/tests/coding/coding_test.c b/tests/coding/coding_test.c
new file mode 100644
index 00000000..9a00f0d3
--- /dev/null
+++ b/tests/coding/coding_test.c
@@ -0,0 +1,501 @@
+/*
+ * (C) 2013 by Andreas Eversberg <jolly@eversberg.eu>
+ * (C) 2015 by Alexander Chemeris <Alexander.Chemeris@fairwaves.co>
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <osmocom/core/bits.h>
+#include <osmocom/core/utils.h>
+
+#include <osmocom/coding/gsm0503_coding.h>
+
+#define ASSERT_TRUE(rc) \
+	if (!(rc)) { \
+		printf("Assert failed in %s:%d.\n",  \
+		       __FILE__, __LINE__);          \
+		abort();			     \
+	}
+
+/* set condition to 1, to show debugging */
+#define printd if (0) printf
+
+static int ubits2sbits(ubit_t *ubits, sbit_t *sbits, int count)
+{
+	int i;
+
+	for (i = 0; i < count; i++) {
+		if (*ubits == 0x23) {
+			ubits++;
+			sbits++;
+			continue;
+		}
+
+		if ((*ubits++) & 1) {
+			*sbits++ = -127;
+		} else {
+			*sbits++ = 127;
+		}
+	}
+
+	return count;
+}
+
+static void test_xcch(uint8_t *l2)
+{
+	uint8_t result[23];
+	ubit_t bursts_u[116 * 4];
+	sbit_t bursts_s[116 * 4];
+	int n_errors, n_bits_total;
+
+	/* Encode L2 message */
+	printd("Encoding: %s\n", osmo_hexdump(l2, 23));
+	gsm0503_xcch_encode(bursts_u, l2);
+
+	/* Prepare soft-bits */
+	ubits2sbits(bursts_u, bursts_s, 116 * 4);
+
+	printd("U-Bits:\n");
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u, 57),
+		bursts_u[57], bursts_u[58]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 116, 57),
+		bursts_u[57 + 116], bursts_u[58 + 116]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 116, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 232, 57),
+		bursts_u[57 + 232], bursts_u[58 + 232]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 232, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 348, 57),
+		bursts_u[57 + 348], bursts_u[58 + 348]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 348, 57));
+
+	printd("S-Bits:\n");
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s, 57),
+		(uint8_t)bursts_s[57], (uint8_t)bursts_s[58]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 116, 57),
+		(uint8_t)bursts_s[57 + 116], (uint8_t)bursts_s[58 + 116]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 116, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 232, 57),
+		(uint8_t)bursts_s[57 + 232], (uint8_t)bursts_s[58 + 232]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 232, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 348, 57),
+		(uint8_t)bursts_s[57 + 348], (uint8_t)bursts_s[58 + 348]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 348, 57));
+
+	/* Destroy some bits */
+	memset(bursts_s, 0, 30);
+	memset(bursts_s + 116, 0, 30);
+
+	/* Decode, correcting errors */
+	gsm0503_xcch_decode(result, bursts_s, &n_errors, &n_bits_total);
+	printd("Decoded: %s\n", osmo_hexdump(result, 23));
+	printf("xcch_decode: n_errors=%d n_bits_total=%d ber=%.2f\n",
+		n_errors, n_bits_total, (float) n_errors / n_bits_total);
+
+	ASSERT_TRUE(n_bits_total == 456);
+	ASSERT_TRUE(!memcmp(l2, result, 23));
+
+	printd("\n");
+}
+
+static void test_rach(uint8_t bsic, uint8_t ra)
+{
+	uint8_t result;
+	ubit_t bursts_u[36];
+	sbit_t bursts_s[36];
+
+	/* Encode L2 message */
+	printd("Encoding: %02x\n", ra);
+	gsm0503_rach_encode(bursts_u, &ra, bsic);
+
+	/* Prepare soft-bits */
+	ubits2sbits(bursts_u, bursts_s, 36);
+
+	printd("U-Bits:\n");
+	printd("%s\n", osmo_hexdump(bursts_u, 36));
+
+	printd("S-Bits:\n");
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s, 36));
+
+	/* Destroy some bits */
+	memset(bursts_s + 6, 0, 8);
+
+	/* Decode, correcting errors */
+	gsm0503_rach_decode(&result, bursts_s, bsic);
+	printd("Decoded: %02x\n", result);
+
+	ASSERT_TRUE(ra == result);
+
+	printd("\n");
+}
+
+static void test_sch(uint8_t *info)
+{
+	uint8_t result[4];
+	ubit_t bursts_u[78];
+	sbit_t bursts_s[78];
+
+	/* Zero bits 25 and above */
+	info[3] &= 1;
+	result[3] = 0;
+
+	/* Encode L2 message */
+	printd("Encoding: %s\n", osmo_hexdump(info, 4));
+	gsm0503_sch_encode(bursts_u, info);
+
+	/* Prepare soft-bits */
+	ubits2sbits(bursts_u, bursts_s, 78);
+
+	printd("U-Bits:\n");
+	printd("%s\n", osmo_hexdump(bursts_u, 78));
+
+	printd("S-Bits:\n");
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s, 78));
+
+	/* Destroy some bits */
+	memset(bursts_s + 6, 0, 10);
+
+	/* Decode, correcting errors */
+	gsm0503_sch_decode(result, bursts_s);
+	printd("Decoded: %s\n", osmo_hexdump(result, 4));
+
+	ASSERT_TRUE(!memcmp(info, result, 4));
+
+	printd("\n");
+}
+
+static void test_fr(uint8_t *speech, int len)
+{
+	uint8_t result[33];
+	ubit_t bursts_u[116 * 8];
+	sbit_t bursts_s[116 * 8];
+	int n_errors, n_bits_total;
+	int rc;
+
+	memset(bursts_u, 0x23, sizeof(bursts_u));
+	memset(bursts_s, 0, sizeof(bursts_s));
+
+	/* Encode L2 message */
+	printd("Encoding: %s\n", osmo_hexdump(speech, len));
+	gsm0503_tch_fr_encode(bursts_u, speech, len, 1);
+
+	/* Prepare soft-bits */
+	ubits2sbits(bursts_u, bursts_s, 116 * 8);
+
+	printd("U-Bits:\n");
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u, 57),
+		bursts_u[57], bursts_u[58]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 116, 57),
+		bursts_u[57 + 116], bursts_u[58 + 116]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 116, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 232, 57),
+		bursts_u[57 + 232], bursts_u[58 + 232]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 232, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 348, 57),
+		bursts_u[57 + 348], bursts_u[58 + 348]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 348, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 464, 57),
+		bursts_u[57 + 464], bursts_u[58 + 464]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 464, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 580, 57),
+		bursts_u[57 + 580], bursts_u[58 + 580]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 580, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 696, 57),
+		bursts_u[57 + 696], bursts_u[58 + 696]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 696, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 812, 57),
+		bursts_u[57 + 812], bursts_u[58 + 812]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 812, 57));
+
+	printd("S-Bits:\n");
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s, 57),
+		(uint8_t)bursts_s[57], (uint8_t)bursts_s[58]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 116, 57),
+		(uint8_t)bursts_s[57 + 116], (uint8_t)bursts_s[58 + 116]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 116, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 232, 57),
+		(uint8_t)bursts_s[57 + 232], (uint8_t)bursts_s[58 + 232]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 232, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 348, 57),
+		(uint8_t)bursts_s[57 + 348], (uint8_t)bursts_s[58 + 348]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 348, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 464, 57),
+		(uint8_t)bursts_s[57 + 464], (uint8_t)bursts_s[58 + 464]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 464, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 580, 57),
+		(uint8_t)bursts_s[57 + 580], (uint8_t)bursts_s[58 + 580]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 580, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 696, 57),
+		(uint8_t)bursts_s[57 + 696], (uint8_t)bursts_s[58 + 696]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 696, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 812, 57),
+		(uint8_t)bursts_s[57 + 812], (uint8_t)bursts_s[58 + 812]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 812, 57));
+
+	/* Destroy some bits */
+	memset(bursts_s + 6, 0, 20);
+
+	/* Decode, correcting errors */
+	rc = gsm0503_tch_fr_decode(result, bursts_s, 1, len == 31,
+		&n_errors, &n_bits_total);
+	printd("Decoded: %s\n", osmo_hexdump(result, len));
+	printf("tch_fr_decode: n_errors=%d n_bits_total=%d ber=%.2f\n",
+		n_errors, n_bits_total, (float)n_errors/n_bits_total);
+
+	ASSERT_TRUE(rc == len);
+	ASSERT_TRUE(!memcmp(speech, result, len));
+
+	printd("\n");
+}
+
+static void test_hr(uint8_t *speech, int len)
+{
+	uint8_t result[23];
+	ubit_t bursts_u[116 * 6];
+	sbit_t bursts_s[116 * 6];
+	int n_errors, n_bits_total;
+	int rc;
+
+	memset(bursts_u, 0x23, sizeof(bursts_u));
+	memset(bursts_s, 0, sizeof(bursts_s));
+
+	/* Encode L2 message */
+	printd("Encoding: %s\n", osmo_hexdump(speech, len));
+	gsm0503_tch_hr_encode(bursts_u, speech, len);
+
+	/* Prepare soft-bits */
+	ubits2sbits(bursts_u, bursts_s, 116 * 6);
+
+	printd("U-Bits:\n");
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u, 57),
+		bursts_u[57], bursts_u[58]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 116, 57),
+		bursts_u[57 + 116], bursts_u[58 + 116]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 116, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 232, 57),
+		bursts_u[57 + 232], bursts_u[58 + 232]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 232, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 348, 57),
+		bursts_u[57 + 348], bursts_u[58 + 348]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 348, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 464, 57),
+		bursts_u[57 + 464], bursts_u[58 + 464]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 464, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 580, 57),
+		bursts_u[57 + 580], bursts_u[58 + 580]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 580, 57));
+
+	printd("S-Bits:\n");
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s, 57),
+		(uint8_t)bursts_s[57], (uint8_t)bursts_s[58]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 116, 57),
+		(uint8_t)bursts_s[57 + 116], (uint8_t)bursts_s[58 + 116]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 116, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 232, 57),
+		(uint8_t)bursts_s[57 + 232], (uint8_t)bursts_s[58 + 232]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 232, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 348, 57),
+		(uint8_t)bursts_s[57 + 348], (uint8_t)bursts_s[58 + 348]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 348, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 464, 57),
+		(uint8_t)bursts_s[57 + 464], (uint8_t)bursts_s[58 + 464]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 464, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 580, 57),
+		(uint8_t)bursts_s[57 + 580], (uint8_t)bursts_s[58 + 580]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 580, 57));
+
+	/* Destroy some bits */
+	memset(bursts_s + 6, 0, 20);
+
+	/* Decode, correcting errors */
+	rc = gsm0503_tch_hr_decode(result, bursts_s, 0,
+		&n_errors, &n_bits_total);
+	printd("Decoded: %s\n", osmo_hexdump(result, len));
+	printf("tch_hr_decode: n_errors=%d n_bits_total=%d ber=%.2f\n",
+		n_errors, n_bits_total, (float)n_errors/n_bits_total);
+
+	ASSERT_TRUE(rc == len);
+	ASSERT_TRUE(!memcmp(speech, result, len));
+
+	printd("\n");
+}
+
+static void test_pdtch(uint8_t *l2, int len)
+{
+	uint8_t result[len];
+	ubit_t bursts_u[116 * 4];
+	sbit_t bursts_s[116 * 4];
+	int n_errors, n_bits_total;
+	int rc;
+
+	/* Zero the not coded tail bits */
+	switch (len) {
+	case 34:
+	case 54:
+		l2[len - 1] &= 0x7f;
+		result[len - 1] &= 0x7f;
+		break;
+	case 40:
+		l2[len - 1] &= 0x07;
+		result[len - 1] &= 0x07;
+		break;
+	}
+
+	/* Encode L2 message */
+	printd("Encoding: %s\n", osmo_hexdump(l2, len));
+	gsm0503_pdtch_encode(bursts_u, l2, len);
+
+	/* Prepare soft-bits */
+	ubits2sbits(bursts_u, bursts_s, 116 * 4);
+
+	printd("U-Bits:\n");
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u, 57),
+		bursts_u[57], bursts_u[58]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 116, 57),
+		bursts_u[57 + 116], bursts_u[58 + 116]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 116, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 232, 57),
+		bursts_u[57 + 232], bursts_u[58 + 232]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 232, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump(bursts_u + 348, 57),
+		bursts_u[57 + 348], bursts_u[58 + 348]);
+	printd("%s\n", osmo_hexdump(bursts_u + 59 + 348, 57));
+
+	printd("S-Bits:\n");
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s, 57),
+		(uint8_t)bursts_s[57], (uint8_t)bursts_s[58]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 116, 57),
+		(uint8_t)bursts_s[57 + 116], (uint8_t)bursts_s[58 + 116]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 116, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 232, 57),
+		(uint8_t)bursts_s[57 + 232], (uint8_t)bursts_s[58 + 232]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 232, 57));
+	printd("%s %02x  %02x  ", osmo_hexdump((uint8_t *)bursts_s + 348, 57),
+		(uint8_t)bursts_s[57 + 348], (uint8_t)bursts_s[58 + 348]);
+	printd("%s\n", osmo_hexdump((uint8_t *)bursts_s + 59 + 348, 57));
+
+	/* Decode */
+	rc = gsm0503_pdtch_decode(result, bursts_s, NULL,
+		&n_errors, &n_bits_total);
+	printd("Decoded: %s\n", osmo_hexdump(result, len));
+	printf("pdtch_decode: n_errors=%d n_bits_total=%d ber=%.2f\n",
+		n_errors, n_bits_total, (float)n_errors/n_bits_total);
+
+	ASSERT_TRUE(rc == len);
+	ASSERT_TRUE(!memcmp(l2, result, len));
+
+	printd("\n");
+}
+
+uint8_t test_l2[][23] = {
+	/* Dummy frame */
+	{ 0x03, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+	/* Random frame */
+	{ 0xa3, 0xaf, 0x5f, 0xc6, 0x36, 0x43, 0x44, 0xab,
+	0xd9, 0x6d, 0x7d, 0x62, 0x24, 0xc9, 0xd2, 0x92,
+	0xfa, 0x27, 0x5d, 0x71, 0x7a, 0x59, 0xa8 },
+	/* jolly frame */
+	{ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
+	0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
+	0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 },
+};
+
+uint8_t test_macblock[][54] = {
+	/* Random frame */
+	{ 0xa3, 0xaf, 0x5f, 0xc6, 0x36, 0x43, 0x44, 0xab,
+	0xd9, 0x6d, 0x7d, 0x62, 0x24, 0xc9, 0xd2, 0x92,
+	0xfa, 0x27, 0x5d, 0x71, 0x7a, 0x59, 0xa8, 0x42,
+	0xa3, 0xaf, 0x5f, 0xc6, 0x36, 0x43, 0x44, 0xab,
+	0xa3, 0xaf, 0x5f, 0xc6, 0x36, 0x43, 0x44, 0xab,
+	0xd9, 0x6d, 0x7d, 0x62, 0x24, 0xc9, 0xd2, 0x92,
+	0xfa, 0x27, 0x5d, 0x71, 0x7a, 0xa8 },
+	/* jolly frame */
+	{ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
+	0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
+	0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 },
+};
+
+uint8_t test_speech_fr[33];
+uint8_t test_speech_efr[31];
+uint8_t test_speech_hr[15];
+
+int main(int argc, char **argv)
+{
+	int i, len_l2, len_mb;
+
+	len_l2 = sizeof(test_l2) / sizeof(test_l2[0]);
+	len_mb = sizeof(test_macblock) / sizeof(test_macblock[0]);
+
+	for (i = 0; i < len_l2; i++)
+		test_xcch(test_l2[i]);
+
+	for (i = 0; i < 256; i++) {
+		test_rach(0x3f, i);
+		test_rach(0x00, i);
+		test_rach(0x1a, i);
+	}
+
+	for (i = 0; i < len_l2; i++)
+		test_sch(test_l2[i]);
+
+	for (i = 0; i < sizeof(test_speech_fr); i++)
+		test_speech_fr[i] = i;
+	test_speech_fr[0] = 0xd0;
+	test_fr(test_speech_fr, sizeof(test_speech_fr));
+
+	for (i = 0; i < sizeof(test_speech_efr); i++)
+		test_speech_efr[i] = i;
+	test_speech_efr[0] = 0xc0;
+	test_fr(test_speech_efr, sizeof(test_speech_efr));
+
+	for (i = 0; i < len_l2; i++)
+		test_fr(test_l2[i], sizeof(test_l2[0]));
+
+	for (i = 0; i < sizeof(test_speech_hr); i++)
+		test_speech_hr[i] = i * 17;
+	test_speech_hr[0] = 0x00;
+	test_hr(test_speech_hr, sizeof(test_speech_hr));
+
+	for (i = 0; i < len_l2; i++)
+		test_hr(test_l2[i], sizeof(test_l2[0]));
+
+	for (i = 0; i < len_mb; i++) {
+		test_pdtch(test_macblock[i], 23);
+		test_pdtch(test_macblock[i], 34);
+		test_pdtch(test_macblock[i], 40);
+		test_pdtch(test_macblock[i], 54);
+	}
+
+	printf("Success\n");
+
+	return 0;
+}
diff --git a/tests/coding/coding_test.ok b/tests/coding/coding_test.ok
new file mode 100644
index 00000000..5030e4d2
--- /dev/null
+++ b/tests/coding/coding_test.ok
@@ -0,0 +1,21 @@
+xcch_decode: n_errors=60 n_bits_total=456 ber=0.13
+xcch_decode: n_errors=60 n_bits_total=456 ber=0.13
+xcch_decode: n_errors=60 n_bits_total=456 ber=0.13
+tch_fr_decode: n_errors=8 n_bits_total=378 ber=0.02
+tch_fr_decode: n_errors=8 n_bits_total=378 ber=0.02
+tch_fr_decode: n_errors=10 n_bits_total=456 ber=0.02
+tch_fr_decode: n_errors=10 n_bits_total=456 ber=0.02
+tch_fr_decode: n_errors=10 n_bits_total=456 ber=0.02
+tch_hr_decode: n_errors=10 n_bits_total=211 ber=0.05
+tch_hr_decode: n_errors=10 n_bits_total=456 ber=0.02
+tch_hr_decode: n_errors=10 n_bits_total=456 ber=0.02
+tch_hr_decode: n_errors=10 n_bits_total=456 ber=0.02
+pdtch_decode: n_errors=0 n_bits_total=456 ber=0.00
+pdtch_decode: n_errors=132 n_bits_total=588 ber=0.22
+pdtch_decode: n_errors=220 n_bits_total=676 ber=0.33
+pdtch_decode: n_errors=0 n_bits_total=444 ber=0.00
+pdtch_decode: n_errors=0 n_bits_total=456 ber=0.00
+pdtch_decode: n_errors=132 n_bits_total=588 ber=0.22
+pdtch_decode: n_errors=220 n_bits_total=676 ber=0.33
+pdtch_decode: n_errors=0 n_bits_total=444 ber=0.00
+Success