library/AMR: Add API to generate encoded RTP AMR headers

Change-Id: I40cd999badeeefa38a393af9008d8ce047e3c778
---
M library/AMR_Types.ttcn
1 file changed, 9 insertions(+), 0 deletions(-)


git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/77/29277/1

diff --git a/library/AMR_Types.ttcn b/library/AMR_Types.ttcn
index 3ef2fbc..e78d5ff 100644
--- a/library/AMR_Types.ttcn
+++ b/library/AMR_Types.ttcn
@@ -35,4 +35,13 @@
         return c_AMRFT_len[amr_ft];
 }
 
+function f_enc_rtp_amr_hdr(integer amr_cmr, integer amr_ft, BIT1 q := '1'B) return OCT2 {
+	var OCT2 hdr := bit2oct(int2bit(amr_cmr, 4) & /* CMR */
+				'00000'B & /* padding */
+				int2bit(amr_ft, 4) & /* FT */
+				q & /* Q */
+				'00'B); /* padding */
+	return hdr;
+}
+
 } with { encode "RAW"}

