[PATCH BlueZ v1 0/6] Add true wireless BAP broadcast tests

[Luiz Augusto von Dentz <luiz.dentz@gmail.com>]

From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

This adds functional tests for broadcast setups where the left and the
right side are separate devices, as in a pair of earbuds, which so far
were only covered with a single sink taking both channels.

The source broadcasts one BIS per channel, and each side registers a
single location, so each of them only gets a transport for the BIS
carrying its own channel: the sides are told apart by the BIS index of
the transport path.

Two topologies are covered. In the first one there is no connection at
all, and each side scans, syncs to the periodic advertising and reads
the BASE on its own. In the second one the two sides are Scan Delegators
forming a coordinated set, so the assistant discovers and connects them
as one device, and pushes one BIS to each of them, each receiving the
periodic advertising sync over its own ACL (PAST).

Writing the second one turned up two bugs, fixed here as well:

- Every MediaAssistant object of a local broadcast shared the bass_data
  of the adapter, and a push stored the session it was pushed to in it,
  so pushing to the second side replaced the target of the first one.
  The Broadcast Code the left side asked for was then written to the
  right one, and the left side never synced. This only shows with more
  than one delegator, which is why it went unnoticed so far.

- Pairing a device that is already paired was rejected with
  AlreadyExists, although the documentation described it as re-pairing.
  It connects the device instead now, which is of actual use to the
  user, and lets a test run against hosts that a previous one left
  bonded, as the hosts are reused.

Luiz Augusto von Dentz (6):
  doc: describe the true wireless broadcast test cases
  doc: describe the true wireless broadcast assistant test case
  test: functional: add the true wireless broadcast tests
  bass: keep the push target per MediaAssistant object
  client: connect a device that is already paired
  test: functional: add the true wireless broadcast assistant test

 client/main.c                               |  40 +++
 client/scripts/broadcast-delegator-left.bt  |  32 +++
 client/scripts/broadcast-delegator-right.bt |  32 +++
 client/scripts/broadcast-sink-left.bt       |  23 ++
 client/scripts/broadcast-sink-right.bt      |  23 ++
 doc/bluetoothctl.rst                        |   6 +-
 doc/functional-bap.rst                      | 246 +++++++++++++++++
 profiles/audio/bass.c                       |  39 ++-
 test/functional/test_bap.py                 | 285 +++++++++++++++++++-
 9 files changed, 701 insertions(+), 25 deletions(-)
 create mode 100644 client/scripts/broadcast-delegator-left.bt
 create mode 100644 client/scripts/broadcast-delegator-right.bt
 create mode 100644 client/scripts/broadcast-sink-left.bt
 create mode 100644 client/scripts/broadcast-sink-right.bt

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2.55.0