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/*
* (C) 2019 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
* All rights reserved.
*
* Author: Pau Espin Pedrol <pespin@sysmocom.de>
*
* Released under the terms of GNU General Public License, Version 2 or
* (at your option) any later version.
*/
module OSMUX_Types {
import from General_Types all;
external function enc_OSMUX_PDU ( in OSMUX_PDU msg ) return octetstring
with { extension "prototype(convert) encode(RAW)" };
external function dec_OSMUX_PDU ( in octetstring msg ) return OSMUX_PDU
with { extension "prototype(convert) decode(RAW)" };
type INT1 OsmuxCID (0 .. 255);
type enumerated OsmuxFT {
OSMUX_FT_LAPD,
OSMUX_FT_AMR,
OSMUX_FT_DUMMY
};
type record Osmux_AMR_header {
BIT1 marker,
INT2b ft,
INT3b ctr,
BIT1 amr_f,
BIT1 amr_q,
INT1 seq,
OsmuxCID cid,
INT4b amr_ft,
INT4b amr_cmr
} with {
variant "FIELDORDER(msb)"
}
type record PDU_Osmux_AMR {
Osmux_AMR_header header,
octetstring data
} with {
variant "FIELDORDER(msb)"
};
type record PDU_Osmux_DUMMY {
Osmux_AMR_header header,
octetstring data
} with {
variant "FIELDORDER(msb)"
};
type record Osmux_session_par {
integer id optional,
charstring local_address optional,
integer local_port optional,
charstring dest_address optional,
integer dest_port optional
}
type record ASP_Osmux_Open_session {
Osmux_session_par session_id
}
type record ASP_Osmux_Open_session_result {
Osmux_session_par session_id
}
type record ASP_Osmux_Close_session {
Osmux_session_par session_id
}
type union OSMUX_PDU {
PDU_Osmux_AMR osmux_amr,
PDU_Osmux_DUMMY osmux_dummy
} with {
variant "TAG (
osmux_amr, header.ft = 1;
osmux_dummy, header.ft = 2;
)"
};
/* AMR voice frame type identifiers
* See also 3GPP TS 26.101, Table 1a: Interpretation of Frame Type, Mode
* Indication and Mode Request fields */
type enumerated AMRFT {
AMR_FT_0, /* 4.75 */
AMR_FT_1, /* 5.15 */
AMR_FT_2, /* 5.90 */
AMR_FT_3, /* 6.70 */
AMR_FT_4, /* 7.40 */
AMR_FT_5, /* 7.95 */
AMR_FT_6, /* 10.2 */
AMR_FT_7, /* 12.2 */
AMR_FT_SID /* SID */
};
/* AMR voice frame length (in bytes, rounded),
* See also RFC 3267, chapter 3.6 */
const integer c_AMRFT_len[9] := {12, 13, 15, 17, 19, 20, 26, 31, 5};
function f_amrft_payload_len(INT4b amr_ft) return integer {
return c_AMRFT_len[amr_ft];
}
} with { encode "RAW"}
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