Attention is currently required from: pespin, dexter.
fixeria has posted comments on this change. (
https://gerrit.osmocom.org/c/osmo-bts/+/32630 )
Change subject: l1sap: Accept RFC5993 and TS 101.318 HR GSM payload
......................................................................
Patch Set 4: Code-Review-1
(5 comments)
Patchset:
PS4:
CR-1 due to TS 101.138 vs TS 101.318.
File include/osmo-bts/bts.h:
https://gerrit.osmocom.org/c/osmo-bts/+/32630/comment/3650d1a3_413486bc
PS4, Line 71: 101.138
TS 101.318
File src/common/bts.c:
https://gerrit.osmocom.org/c/osmo-bts/+/32630/comment/4b1d4102_9fab6d15
PS4, Line 208: 101.138
TS 101.318
File src/common/l1sap.c:
https://gerrit.osmocom.org/c/osmo-bts/+/32630/comment/11c7b57f_2204b064
PS4, Line 1955: /* Since we already verified the payload in rtppayload_validate_hr(), we
may trust that the payload length is
I meant something like this (assuming no weird lengths
like len=0 are to be received here): […]
Agreeing with pespin here, his proposed
approach looks more readable. Also, given that it's just one optional byte in front of
the payload, the code can be simplified further:
```
msg = l1sap_msgb_alloc(rtp_pl_len);
if (!msg)
return NULL;
memcpy(msgb_put(msg, rtp_pl_len), rtp_pl, rtp_pl_len);
switch (rtp_pl_len) {
case GSM_HR_BYTES_RTP_TS101318:
/* Convert from TS 101 318 to RFC 5993 */
if (OSMO_UNLIKELY(!ts101318 && rfc5993))
msgb_push_u8(msg, 0x00);
break;
case GSM_HR_BYTES_RTP_RFC5993:
/* Convert from RFC 5993 TS 101 318 */
if (OSMO_UNLIKELY(!rfc5993 && ts101318))
msgb_pull_u8(msg);
break;
default:
OSMO_ASSERT(0);
}
```
File src/osmo-bts-virtual/main.c:
https://gerrit.osmocom.org/c/osmo-bts/+/32630/comment/7167ecac_dbd7a54d
PS4, Line 76: BTS_INTERNAL_FLAG_SPEECH_H_V1_RTP_RFC5993
I am not 100% sure, but osmo-bts-virtual should in theory support both formats.
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Gerrit-Project: osmo-bts
Gerrit-Branch: master
Gerrit-Change-Id: I9419b40c1171876879d41aba4f51c93e8ef5673c
Gerrit-Change-Number: 32630
Gerrit-PatchSet: 4
Gerrit-Owner: dexter <pmaier(a)sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: fixeria <vyanitskiy(a)sysmocom.de>
Gerrit-Reviewer: pespin <pespin(a)sysmocom.de>
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Gerrit-Comment-Date: Fri, 19 May 2023 11:19:13 +0000
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