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2018-07-22codec_pref: check bts codec supportPhilipp Maier2-13/+444
The vty option bts->codec-support allows the user to set the supported codecs per BTS level. However, those values are currently only used to make the handover decision but the logic that handles the BSSMAP ASSIGNMENT REQUEST does not check those flags. - Do not ignore bts->codec-support flags on BSSMAP ASSIGNMENT REQUEST Change-Id: I285234e9c81de74d9fb9907fca2c443b08537435 Closes: OS#3361
2018-07-22codec_pref: move match_codec_pref() to separate c-file and add unit-testPhilipp Maier3-0/+1239
At the moment there are three sources that may advertise a list of supported audio codec/rate settings. There is the MS that advertises advertises a speech codec list and the MSC that sends a channel type information element over A and there are also settings in the bsc configuration file that may restrict the codec/rate types that are allowed to use. The function match_codec_pref() looks at all of the three buckets and selects a codec that satisfies all three. This is already a somewhat complicated process, overit is very isolated, so lets give it its own c-file. Due to the lack of unit-tests it is very hard to make changes here so lets add also unit-test to make sure that regressions are catched early. - Put match_codec_pref() and all its helper functions into a separate c-file. - Add a unit test. Change-Id: Iabedfdcec8b99a319f2d57cbea45c5e36c7b6e29 Related: OS#3361