[PATCH BlueZ v4 0/7] mcp: support multiple MCP and implement local GMCS

[Pauli Virtanen <pav@iki.fi>]

v4:
- move uinput-util.h to src/shared + adapt accordingly
- improve debug logs in profile

v3:
- add missing #include to fix build in the test environment

v2:
- fix compilation issues
- remove unnecessary code in get_media_cp_op_supported

***

For Media Control Client, add support for multiple GMCS / MCS services
on the server. Revise the API accordingly.

For Media Control Server, make it a non-stub implementation (OTS still
missing), and add an API the profile can use.

Add tests.

This changes the design of the previous MCP code, so it's mostly a
rewrite.

The shared/mcp: commit doesn't fix the API in profiles/audio, that's
done in the later mcp: commit, as it's a rewrite of the API.

TODO (for later): OTP/OTS parts -- requires design for OTP/OTS
implementation first

TODO (for later): MPRIS integration to GMCS server -- this needs some
redesign in media.c as it's hardcoded to AVRCP there.

Tested devices (MCS):
- Creative Zen Hybrid Pro (doesn't even connect without GMCS)
- Samsung Galaxy Buds Pro2
- Creative Aurvana Ace 2

Tested devices (MCP):
- Samsung Galaxy A56

Pauli Virtanen (7):
  shared/mcp: support multiple MCP, and add non-stub MCS server
  test-mcp: add tests for MCP / MCS
  mcp: adapt to new MCP API to support multiple remote MCS services
  shared/uinput-util: extract uinput utility function from AVCTP
  avctp: use uinput utilities from src/shared
  mcp: add local GMCS service that emits uinput media keys
  shared/gatt-client: fix notify_data leak in notify_data_write_ccc

 .gitignore               |    1 +
 Makefile.am              |   10 +-
 lib/bluetooth/uuid.h     |   27 +-
 profiles/audio/avctp.c   |  159 +-
 profiles/audio/mcp.c     |  812 +++++++---
 src/shared/gatt-client.c |    3 +
 src/shared/mcp.c         | 3216 ++++++++++++++++++++++----------------
 src/shared/mcp.h         |  186 ++-
 src/shared/mcs.h         |   51 +-
 src/shared/uinput-util.c |  195 +++
 src/shared/uinput-util.h |   31 +
 unit/test-mcp.c          | 1807 +++++++++++++++++++++
 12 files changed, 4742 insertions(+), 1756 deletions(-)
 create mode 100644 src/shared/uinput-util.c
 create mode 100644 src/shared/uinput-util.h
 create mode 100644 unit/test-mcp.c

-- 
2.51.1