| /* |
| * (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"} |