tree 3246c5dcf26dff0c0c1dc6133bf498419cdfd248
parent 4f59716f43cebdbb5ee21d5dc01a742bbb899190
author En-Shuo Hsu <enshuo@chromium.org> 1612177552 +0800
committer Commit Bot <commit-bot@chromium.org> 1612268035 +0000

cras: Set preferred codec to msbc only if WBS is supported

Some headsets reports available codecs through AT+BAC even if AG
declares not supporting codec negotiation. This is not disallowed by the
Bluetooth HFP spec. We should check if the WBS is supported by the AG
also before setting it as our preferred codec.

The set to CVSD is required for cases that HF declares different
supported codecs after the codec negotiation is done. This case is
covered by our unittest.

BUG=b:177469064
TEST=unittest and deploy to DUT and verify the bug doesn't repro

Change-Id: Idab5c6acfbeeadb94d1c9a44753d02dbd5047382
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/adhd/+/2662796
Tested-by: En-Shuo Hsu <enshuo@chromium.org>
Reviewed-by: Hsinyu Chao <hychao@chromium.org>
Commit-Queue: En-Shuo Hsu <enshuo@chromium.org>