fixeria has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-bts/+/38303?usp=email ) Change subject: [WIP] csd_v110: align TCH/F4.8 NT with DL radio blocks ...................................................................... [WIP] csd_v110: align TCH/F4.8 NT with DL radio blocks Change-Id: Iea4a21ab9d333bbf416a0997971b1ba25784f238 Related: OS#1572 --- M src/common/csd_v110.c 1 file changed, 10 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/03/38303/1 diff --git a/src/common/csd_v110.c b/src/common/csd_v110.c index 5fb86b7..aed1715 100644 --- a/src/common/csd_v110.c +++ b/src/common/csd_v110.c @@ -199,6 +199,16 @@ osmo_csd_12k_6k_encode_frame(&data[i * 60], 60, &df); else /* desc->num_bits == 36 */ osmo_csd_3k6_encode_frame(&data[i * 36], 36, &df); + + if (lchan->csd_mode == LCHAN_CSD_M_NT) { + if ((i & 1) == 0) { /* executed for Q1/Q3 */ + /* E7: 0 for Q1, 1 for Q2/Q3/Q4 (3GPP TS 44.021, Figure 1) + * E2: 0 for Q1/Q2, 1 for Q3/Q4 (3GPP TS 48.020, Table 7) */ + if (OSMO_UNLIKELY(df.e_bits[1] != df.e_bits[6])) + return -EINVAL; /* drop unaligned blocks */ + /* TODO: (for TCH/F4.8) store and send this block later? */ + } + } } return desc->num_blocks * desc->num_bits; -- To view, visit https://gerrit.osmocom.org/c/osmo-bts/+/38303?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: osmo-bts Gerrit-Branch: master Gerrit-Change-Id: Iea4a21ab9d333bbf416a0997971b1ba25784f238 Gerrit-Change-Number: 38303 Gerrit-PatchSet: 1 Gerrit-Owner: fixeria <vyanitskiy(a)sysmocom.de>