diff options
| author | Philipp Maier <pmaier@sysmocom.de> | 2017-03-28 17:05:40 +0200 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2017-04-08 07:44:46 +0000 |
| commit | e0c65301d5786be04cf4731f1cdeed05c4442482 (patch) | |
| tree | 379c1481eb20eb43970e5b4cf915285eb46d1217 /include | |
| parent | fa896abbb3c18af46aa398d6e6708a275d42a863 (diff) | |
gsm0808: Add utils for Channel Type
The planned support for true A over IP requires the encoding of
the a Channel Type element (see also ASSIGNMENT REQUEST).
This commt adds encoding/decoding functionality and tests for
the element mentioned above, however, it is not yet actively used.
Change-Id: Id0e2164d84b8cbcc6fe6a090fc7f40a1251421d7
Diffstat (limited to 'include')
| -rw-r--r-- | include/osmocom/gsm/gsm0808_utils.h | 8 | ||||
| -rw-r--r-- | include/osmocom/gsm/protocol/gsm_08_08.h | 9 |
2 files changed, 17 insertions, 0 deletions
diff --git a/include/osmocom/gsm/gsm0808_utils.h b/include/osmocom/gsm/gsm0808_utils.h index b5ddbdb7..48e737d1 100644 --- a/include/osmocom/gsm/gsm0808_utils.h +++ b/include/osmocom/gsm/gsm0808_utils.h @@ -47,3 +47,11 @@ uint8_t gsm0808_enc_speech_codec_list(struct msgb *msg, /* Decode Speech Codec list */ int gsm0808_dec_speech_codec_list(struct gsm0808_speech_codec_list *scl, const uint8_t *elem, uint8_t len); + +/* Encode Channel Type element */ +uint8_t gsm0808_enc_channel_type(struct msgb *msg, + const struct gsm0808_channel_type *ct); + +/* Decode Channel Type element */ +int gsm0808_dec_channel_type(struct gsm0808_channel_type *ct, + const uint8_t *elem, uint8_t len); diff --git a/include/osmocom/gsm/protocol/gsm_08_08.h b/include/osmocom/gsm/protocol/gsm_08_08.h index 3e5514dc..e2355f68 100644 --- a/include/osmocom/gsm/protocol/gsm_08_08.h +++ b/include/osmocom/gsm/protocol/gsm_08_08.h @@ -438,3 +438,12 @@ struct gsm0808_speech_codec_list { struct gsm0808_speech_codec codec[SPEECH_CODEC_MAXLEN]; uint8_t len; }; + +/* 3GPP TS 48.008 3.2.2.11 Channel Type */ +#define CH_TYPE_PERM_SPCH_MAXLEN 9 +struct gsm0808_channel_type { + uint8_t ch_indctr; + uint8_t ch_rate_type; + uint8_t perm_spch[CH_TYPE_PERM_SPCH_MAXLEN]; + unsigned int perm_spch_len; +}; |