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-rw-r--r--src/modules/alsa/module-alsa-sink.c125
1 files changed, 125 insertions, 0 deletions
diff --git a/src/modules/alsa/module-alsa-sink.c b/src/modules/alsa/module-alsa-sink.c
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+++ b/src/modules/alsa/module-alsa-sink.c
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+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2008 Lennart Poettering
+ Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
+
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2 of the License,
+ or (at your option) any later version.
+
+ PulseAudio 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.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with PulseAudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <pulsecore/core.h>
+#include <pulsecore/module.h>
+#include <pulsecore/sink.h>
+#include <pulsecore/modargs.h>
+
+#include "alsa-util.h"
+#include "alsa-sink.h"
+#include "module-alsa-sink-symdef.h"
+
+PA_MODULE_AUTHOR("Lennart Poettering");
+PA_MODULE_DESCRIPTION("ALSA Sink");
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(FALSE);
+PA_MODULE_USAGE(
+ "name=<name of the sink, to be prefixed> "
+ "sink_name=<name for the sink> "
+ "device=<ALSA device> "
+ "device_id=<ALSA card index> "
+ "format=<sample format> "
+ "rate=<sample rate> "
+ "channels=<number of channels> "
+ "channel_map=<channel map> "
+ "fragments=<number of fragments> "
+ "fragment_size=<fragment size> "
+ "mmap=<enable memory mapping?> "
+ "tsched=<enable system timer based scheduling mode?> "
+ "tsched_buffer_size=<buffer size when using timer based scheduling> "
+ "tsched_buffer_watermark=<lower fill watermark> "
+ "ignore_dB=<ignore dB information from the device?>");
+
+static const char* const valid_modargs[] = {
+ "name",
+ "sink_name",
+ "device",
+ "device_id",
+ "format",
+ "rate",
+ "channels",
+ "channel_map",
+ "fragments",
+ "fragment_size",
+ "mmap",
+ "tsched",
+ "tsched_buffer_size",
+ "tsched_buffer_watermark",
+ "ignore_dB",
+ NULL
+};
+
+int pa__init(pa_module*m) {
+ pa_modargs *ma = NULL;
+
+ pa_assert(m);
+
+ pa_alsa_redirect_errors_inc();
+ snd_config_update_free_global();
+
+ if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+ pa_log("Failed to parse module arguments");
+ goto fail;
+ }
+
+ if (!(m->userdata = pa_alsa_sink_new(m, ma, __FILE__, NULL, NULL)))
+ goto fail;
+
+ pa_modargs_free(ma);
+
+ return 0;
+
+fail:
+
+ if (ma)
+ pa_modargs_free(ma);
+
+ pa__done(m);
+
+ return -1;
+}
+
+int pa__get_n_used(pa_module *m) {
+ pa_sink *sink;
+
+ pa_assert(m);
+ pa_assert_se(sink = m->userdata);
+
+ return pa_sink_linked_by(sink);
+}
+
+void pa__done(pa_module*m) {
+ pa_sink *sink;
+
+ pa_assert(m);
+
+ if ((sink = m->userdata))
+ pa_alsa_sink_free(sink);
+
+ snd_config_update_free_global();
+ pa_alsa_redirect_errors_dec();
+}