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/***
This file is part of PulseAudio.
Copyright 2009 Lennart Poettering
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 <pulse/xmalloc.h>
#include <pulsecore/core-util.h>
#include <pulsecore/modargs.h>
#include "alsa-util.h"
#include "module-alsa-card-symdef.h"
PA_MODULE_AUTHOR("Lennart Poettering");
PA_MODULE_DESCRIPTION("ALSA Card");
PA_MODULE_VERSION(PACKAGE_VERSION);
PA_MODULE_LOAD_ONCE(FALSE);
PA_MODULE_USAGE(
"name=<name for the sink/source> "
"device_id=<ALSA card index> "
"format=<sample format> "
"rate=<sample rate> "
"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> "
"profile=<profile name>");
static const char* const valid_modargs[] = {
"sink_name",
"device",
"device_id",
"format",
"rate",
"channels",
"channel_map",
"fragments",
"fragment_size",
"mmap",
"tsched",
"tsched_buffer_size",
"tsched_buffer_watermark",
NULL
};
#define DEFAULT_DEVICE_ID "0"
struct userdata {
pa_core *core;
pa_module *module;
char *device_id;
pa_card *card;
};
struct profile_data {
const pa_alsa_profile_info *sink, *source;
};
static void enumerate_cb(
const pa_alsa_profile_info *sink,
const pa_alsa_profile_info *source,
void *userdata) {
pa_hashmap *profiles = (pa_hashmap *) userdata;
char *t, *n;
pa_card_profile *p;
struct profile_data *d;
if (sink && source) {
n = pa_sprintf_malloc("output-%s+input-%s", sink->name, source->name);
t = pa_sprintf_malloc("Output %s + Input %s", sink->description, source->description);
} else if (sink) {
n = pa_sprintf_malloc("output-%s", sink->name);
t = pa_sprintf_malloc("Output %s", sink->description);
} else {
pa_assert(source);
n = pa_sprintf_malloc("input-%s", source->name);
t = pa_sprintf_malloc("Input %s", source->description);
}
pa_log_info("Found output profile '%s'", t);
p = pa_card_profile_new(n, t, sizeof(struct profile_data));
pa_xfree(t);
pa_xfree(n);
p->n_sinks = !!sink;
p->n_sources = !!source;
if (sink)
p->max_sink_channels = sink->map.channels;
if (source)
p->max_source_channels = source->map.channels;
d = PA_CARD_PROFILE_DATA(p);
d->sink = sink;
d->source = source;
pa_hashmap_put(profiles, p->name, p);
}
static void add_disabled_profile(pa_hashmap *profiles) {
pa_card_profile *p;
struct profile_data *d;
p = pa_card_profile_new("off", "Off", sizeof(struct profile_data));
d = PA_CARD_PROFILE_DATA(p);
d->sink = d->source = NULL;
pa_hashmap_put(profiles, p->name, p);
}
int pa__init(pa_module*m) {
pa_card_new_data data;
pa_modargs *ma;
int alsa_card_index;
struct userdata *u;
pa_alsa_redirect_errors_inc();
pa_assert(m);
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log("Failed to parse module arguments");
goto fail;
}
m->userdata = u = pa_xnew0(struct userdata, 1);
u->core = m->core;
u->module = m;
u->device_id = pa_xstrdup(pa_modargs_get_value(ma, "device_id", DEFAULT_DEVICE_ID));
if ((alsa_card_index = snd_card_get_index(u->device_id)) < 0) {
pa_log("Card '%s' doesn't exist: %s", u->device_id, snd_strerror(alsa_card_index));
goto fail;
}
pa_card_new_data_init(&data);
data.driver = __FILE__;
data.module = m;
pa_alsa_init_proplist_card(data.proplist, alsa_card_index);
pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_id);
pa_card_new_data_set_name(&data, pa_modargs_get_value(ma, "name", u->device_id));
data.profiles = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
if (pa_alsa_probe_profiles(u->device_id, &m->core->default_sample_spec, enumerate_cb, data.profiles) < 0) {
pa_card_new_data_done(&data);
goto fail;
}
if (pa_hashmap_isempty(data.profiles)) {
pa_log("Failed to find a working profile.");
pa_card_new_data_done(&data);
goto fail;
}
add_disabled_profile(data.profiles);
u->card = pa_card_new(m->core, &data);
pa_card_new_data_done(&data);
return 0;
fail:
if (ma)
pa_modargs_free(ma);
pa__done(m);
return -1;
}
void pa__done(pa_module*m) {
struct userdata *u;
pa_assert(m);
if (!(u = m->userdata))
goto finish;
if (u->card)
pa_card_free(u->card);
pa_xfree(u->device_id);
pa_xfree(u);
finish:
snd_config_update_free_global();
pa_alsa_redirect_errors_dec();
}
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