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http://cgit.osmocom.org/osmo-bts/commit/?id=a4bd813081e788012c72f34d31150cd…
commit a4bd813081e788012c72f34d31150cdf02db307f
Author: Harald Welte <laforge(a)gnumonks.org>
Date: Sun May 28 16:00:36 2017 +0200
sysmobts: Re-order the bit-endianness of every HR codec parameter
The so-called "RTP mode" of the DSP contains a bug on all firmware
versions < 5.3.3 which causes the bit-order within each of the
non-aligned codec parameters to be wrong. Introduce a function
originally written by Sylvain Munaut during 32C3 in
http://git.osmocom.org/openbsc/commit/?h=sylvain/32c3_codec&id=5b4a16bb…
to bring the bits into [the correct] order.
This has never been seen in a "pure sysmoBTS" setup, as all BTSs would
use the same (wrong) bit-ordering and thus interoperate. This patch now
checks for an affected DSP firmware version and then jumbles (old DSP
firmware version) or does nothing (new DSP firmware version).
Change-Id: Ia0eee4f514fb8fd81c052bb44a4facba898d6afb
Closes: SYS#2452
-----------------------------------------------------------------------
Summary of changes:
src/osmo-bts-sysmo/l1_if.c | 3 +++
src/osmo-bts-sysmo/l1_if.h | 15 +++++++++++
src/osmo-bts-sysmo/tch.c | 64 ++++++++++++++++++++++++++++++++++++++++------
3 files changed, 74 insertions(+), 8 deletions(-)
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Osmocom BTS-side code (Abis, scheduling, ...)