1 files changed, 51 insertions, 0 deletions
diff --git a/src/osmo-bts-trx/sched_utils.h b/src/osmo-bts-trx/sched_utils.h
new file mode 100644
index 00000000..a88e06ee
--- /dev/null
+++ b/src/osmo-bts-trx/sched_utils.h
@@ -0,0 +1,51 @@
+/* Auxiliary scheduler utilities.
+ *
+ * (C) 2017 by Harald Welte <laforge@gnumonks.org>
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+/* Burst Payload LENgth (short alias) */
+#define BPLEN GSM_NBITS_NB_GMSK_PAYLOAD
+
+/* Burst BUFfer capacity (in BPLEN units).  Why 24?  Because CSD frames
+ * are interleaved over 22 bursts, but on TCH/F we decode every 4th burst,
+ * so it must be a multiple of 4.  See also 'doc/trx_sched_tch.txt'. */
+#define BUFMAX 24
+
+/* Burst BUFfer position macros */
+#define BUFPOS(buf, n) &buf[(n) * BPLEN]
+#define BUFTAIL8(buf) BUFPOS(buf, (BUFMAX - 8))
+
+extern void *tall_bts_ctx;
+
+#define BAD_DATA_MSG_FMT "Received bad data (rc=%d, BER %d/%d) ending at fn=%u/%u"
+#define BAD_DATA_MSG_ARGS \
+	rc, n_errors, n_bits_total, bi->fn % l1ts->mf_period, l1ts->mf_period
+
+/* Compute the bit error rate in 1/10000 units */
+static inline uint16_t compute_ber10k(int n_bits_total, int n_errors)
+{
+	if (n_bits_total == 0)
+		return 10000;
+	else
+		return 10000 * n_errors / n_bits_total;
+}