android/sco-ipc-api.txt

   1 Bluetooth SCO Audio Plugin
   2 ==========================
   3
   4 The SCO Audio Plugin communicate through abstract socket name
   5 "\0bluez_sco_socket".
   6
   7         .----SCO----.                             .--Android--.
   8         |   Plugin  |                             |   Daemon  |
   9         |           |          Command            |           |
  10         |           | --------------------------> |           |
  11         |           |                             |           |
  12         |           | <-------------------------- |           |
  13         |           |          Response           |           |
  14         |           |                             |           |
  15         |           |                             |           |
  16         |           |                             |           |
  17         '-----------'                             '-----------'
  18
  19
  20         SCO HAL                               Daemon
  21         ----------------------------------------------------
  22
  23         call get_fd()                    --> Get SCO socket fd
  24         return get_fd()                  <-- Return SCO socket fd and mtu
  25
  26 SCO Audio Service (ID 0)
  27 ========================
  28
  29         Opcode 0x00 - Error response
  30
  31                 Response parameters: Status (1 octet)
  32
  33         Opcode 0x01 - Get SCO fd command
  34
  35                 Command parameters: Remote address (6 octets)
  36                 Response parameters: MTU (2 octets)
  37                                      File descriptor (inline)