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
diff --git a/include/osmocom/gsm/gsm0808_utils.h b/include/osmocom/gsm/gsm0808_utils.h
index b5ddbdb..48e737d 100644
--- a/include/osmocom/gsm/gsm0808_utils.h
+++ b/include/osmocom/gsm/gsm0808_utils.h
@@ -47,3 +47,11 @@
/* 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);