library/AMR: Add RTP AMR helper structs and functions
Change-Id: I40cd999badeeefa38a393af9008d8ce047e3c778
diff --git a/library/AMR_Types.ttcn b/library/AMR_Types.ttcn
index 3ef2fbc..b4f044d 100644
--- a/library/AMR_Types.ttcn
+++ b/library/AMR_Types.ttcn
@@ -11,6 +11,7 @@
module AMR_Types {
import from General_Types all;
+import from Osmocom_Types all;
/* AMR voice frame type identifiers
* See also 3GPP TS 26.101, Table 1a: Interpretation of Frame Type, Mode
@@ -35,4 +36,29 @@
return c_AMRFT_len[amr_ft];
}
+type record RTP_AMR_Hdr {
+ uint4_t cmr,
+ BIT4 padding1,
+ BIT1 f,
+ uint4_t ft,
+ BIT1 q,
+ BIT2 padding2
+} with { variant "FIELDORDER(msb)" };
+
+template (value) RTP_AMR_Hdr ts_RTP_AMR_Hdr(template (value) uint4_t cmr,
+ template (value) uint4_t ft,
+ template (value) BIT1 q := '1'B,
+ template (value) BIT1 f := '0'B) := {
+ cmr := cmr,
+ padding1 := '0000'B,
+ f := f,
+ ft := ft,
+ q := q,
+ padding2 := '00'B
+}
+external function enc_RTP_AMR_Hdr(in RTP_AMR_Hdr amr_hdr) return octetstring
+ with { extension "prototype(convert) encode(RAW)" };
+external function dec_RTP_AMR_Hdr(in octetstring stream) return RTP_AMR_Hdr
+ with { extension "prototype(convert) decode(RAW)" };
+
} with { encode "RAW"}