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code.delx.au - pulseaudio/blob - src/modules/alsa/module-alsa-sink.c
2 This file is part of PulseAudio.
4 Copyright 2004-2008 Lennart Poettering
5 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
7 PulseAudio is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published
9 by the Free Software Foundation; either version 2.1 of the License,
10 or (at your option) any later version.
12 PulseAudio is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with PulseAudio; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
27 #include <pulsecore/core.h>
28 #include <pulsecore/module.h>
29 #include <pulsecore/sink.h>
30 #include <pulsecore/modargs.h>
32 #include "alsa-util.h"
33 #include "alsa-sink.h"
34 #include "module-alsa-sink-symdef.h"
36 PA_MODULE_AUTHOR("Lennart Poettering");
37 PA_MODULE_DESCRIPTION("ALSA Sink");
38 PA_MODULE_VERSION(PACKAGE_VERSION
);
39 PA_MODULE_LOAD_ONCE(FALSE
);
41 "name=<name of the sink, to be prefixed> "
42 "sink_name=<name for the sink> "
43 "device=<ALSA device> "
44 "device_id=<ALSA card index> "
45 "format=<sample format> "
47 "channels=<number of channels> "
48 "channel_map=<channel map> "
49 "fragments=<number of fragments> "
50 "fragment_size=<fragment size> "
51 "mmap=<enable memory mapping?> "
52 "tsched=<enable system timer based scheduling mode?> "
53 "tsched_buffer_size=<buffer size when using timer based scheduling> "
54 "tsched_buffer_watermark=<lower fill watermark> "
55 "ignore_dB=<ignore dB information from the device?> "
56 "control=<name of mixer control>");
58 static const char* const valid_modargs
[] = {
72 "tsched_buffer_watermark",
78 int pa__init(pa_module
*m
) {
79 pa_modargs
*ma
= NULL
;
83 pa_alsa_redirect_errors_inc();
84 snd_config_update_free_global();
86 if (!(ma
= pa_modargs_new(m
->argument
, valid_modargs
))) {
87 pa_log("Failed to parse module arguments");
91 if (!(m
->userdata
= pa_alsa_sink_new(m
, ma
, __FILE__
, NULL
, NULL
)))
108 int pa__get_n_used(pa_module
*m
) {
112 pa_assert_se(sink
= m
->userdata
);
114 return pa_sink_linked_by(sink
);
117 void pa__done(pa_module
*m
) {
122 if ((sink
= m
->userdata
))
123 pa_alsa_sink_free(sink
);
125 snd_config_update_free_global();
126 pa_alsa_redirect_errors_dec();