[PATCH BlueZ 00/12] hfp-hf: Enhance HFP Hands-Free profile support

["Frédéric Danis" <frederic.danis@collabora.com>]

This series enhanced the HFP Hands-Free (HF) role support in BlueZ:

 - Registration:
   - Register the HFP HF profile with an SDP record so BlueZ is
     discoverable/connectable as a Hands-Free device.

 - Audio path:
   - Register a MediaEndpoint1 per supported HFP codec and wire up
     MediaTransport creation/configuration so SCO audio is exposed
     through the standard Media API instead of a bespoke interface.
   - Extend bluetoothctl (client/player) with matching menu entries
     to select/manage the HFP HF MediaEndpoints.

 - Codec negotiation:
   - Implement AT+BAC / +BCS handling in shared/hfp so the supported
     codec list is advertised during SLC setup and codec selection
     from the AG is honored (or renegotiated when unavailable).

 - Multi-call handling:
   - Implement SwapCalls, ReleaseAndAnswer, ReleaseAndSwap and
     HoldAndAnswer on org.bluez.Telephony1, plus corresponding
     bluetoothctl menu entries.
   - Add support for releasing all calls except waiting ones
     (including multiparty calls), both in shared/hfp and audio/hfp-hf.

 - DTMF:
   - Add AT+VTS-based Send Tones support in shared/hfp and audio/hfp-hf,
     with a bluetoothctl menu entry to trigger it.

New related PipeWire BlueZ backend draft can be found at:
https://gitlab.freedesktop.org/pipewire/pipewire/-/merge_requests/2978

Frédéric Danis (12):
  audio/hfp-hf: Add HFP HF server and SDP record
  audio/hfp-hf: Add MediaEndpoint for HFP codecs
  client/player: Add MediaEndpoints for HFP HF codecs
  shared/hfp: Add hangup all calls support
  audio/hfp-hf: Add hangup all calls support
  shared/hfp: Add send tones support
  audio/hfp-hf: Add Send Tones support
  client/telephony: Add Send Tones menu entry
  audio/hfp-hf: Add multi calls support
  client/telephony: Add multi calls support
  shared/hfp: Add codecs support
  audio/hfp-hf: Add codecs support

 client/player.c            |  18 +-
 client/telephony.c         | 237 +++++++++
 profiles/audio/hfp-hf.c    | 979 +++++++++++++++++++++++++++++++++++++
 profiles/audio/hfp-hf.h    |  26 +
 profiles/audio/media.c     |  76 +++
 profiles/audio/media.h     |   6 +
 profiles/audio/transport.c | 158 ++++++
 src/shared/hfp.c           | 229 ++++++++-
 src/shared/hfp.h           |  13 +
 9 files changed, 1735 insertions(+), 7 deletions(-)
 create mode 100644 profiles/audio/hfp-hf.h

-- 
2.43.0