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(*****************************************************************************
Liquidsoap, a programmable audio stream generator.
Copyright 2003-2011 Savonet team
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details, fully stated in the COPYING
file at the root of the liquidsoap distribution.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*****************************************************************************)
(** Alsa related settings *)
(** ALSA should be quiet *)
let () = Alsa.no_stderr_report ()
(** Error translator *)
let error_translator e =
match e with
| Alsa.Buffer_xrun
| Alsa.Bad_state
| Alsa.Suspended
| Alsa.IO_error
| Alsa.Device_busy
| Alsa.Invalid_argument
| Alsa.Device_removed
| Alsa.Interrupted
| Alsa.Unknown_error _ ->
raise (Utils.Translation
(Printf.sprintf "Alsa error: %s" (Alsa.string_of_error e)))
| _ -> ()
let () = Utils.register_error_translator error_translator
let conf =
Dtools.Conf.void ~p:(Configure.conf#plug "alsa")
"ALSA configuration"
let conf_buffer_length =
Dtools.Conf.int ~p:(conf#plug "buffer_length") ~d:1
"Buffer size, in frames"
~comments:[
"This is only used for buffered ALSA I/O, and affects latency."
]
let periods =
Dtools.Conf.int ~p:(conf#plug "periods") ~d:0
"Number of periods"
~comments:[
"Set to 0 to disable this setting and use ALSA's default."
]
let alsa_buffer =
Dtools.Conf.int ~p:(conf#plug "alsa_buffer") ~d:0
"Alsa internal buffer size"
~comments:[
"This setting is only used in buffered alsa I/O, and affects latency.";
"Set to 0 to disable this setting and use ALSA's default."
]
(** A dedicated clock for all ALSA I/O operators, to make sure other
* blocking I/O inteferes with them. In the future, we might even want
* to have different clocks for different ALSA devices. *)
let get_clock = Tutils.lazy_cell (fun () -> new Clock.self_sync "alsa")
|