2 This file is part of PulseAudio.
4 Copyright 2009 Lennart Poettering
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2 of the License,
9 or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
26 #include <pulse/xmalloc.h>
27 #include <pulse/i18n.h>
29 #include <pulsecore/core-util.h>
30 #include <pulsecore/modargs.h>
31 #include <pulsecore/queue.h>
33 #include "alsa-util.h"
34 #include "alsa-sink.h"
35 #include "alsa-source.h"
36 #include "module-alsa-card-symdef.h"
38 PA_MODULE_AUTHOR("Lennart Poettering");
39 PA_MODULE_DESCRIPTION("ALSA Card");
40 PA_MODULE_VERSION(PACKAGE_VERSION);
41 PA_MODULE_LOAD_ONCE(FALSE);
43 "name=<name for the card/sink/source, to be prefixed> "
44 "card_name=<name for card> "
45 "sink_name=<name for sink> "
46 "source_name=<name for source> "
47 "device_id=<ALSA card index> "
48 "format=<sample format> "
50 "fragments=<number of fragments> "
51 "fragment_size=<fragment size> "
52 "mmap=<enable memory mapping?> "
53 "tsched=<enable system timer based scheduling mode?> "
54 "tsched_buffer_size=<buffer size when using timer based scheduling> "
55 "tsched_buffer_watermark=<lower fill watermark> "
56 "profile=<profile name> "
57 "ignore_dB=<ignore dB information from the device?>");
59 static const char* const valid_modargs[] = {
72 "tsched_buffer_watermark",
78 #define DEFAULT_DEVICE_ID "0"
94 const pa_alsa_profile_info *sink_profile, *source_profile;
97 static void enumerate_cb(
98 const pa_alsa_profile_info *sink,
99 const pa_alsa_profile_info *source,
102 pa_hashmap *profiles = (pa_hashmap *) userdata;
105 struct profile_data *d;
107 if (sink && source) {
108 n = pa_sprintf_malloc("output-%s+input-%s", sink->name, source->name);
109 t = pa_sprintf_malloc(_("Output %s + Input %s"), sink->description, _(source->description));
111 n = pa_sprintf_malloc("output-%s", sink->name);
112 t = pa_sprintf_malloc(_("Output %s"), _(sink->description));
115 n = pa_sprintf_malloc("input-%s", source->name);
116 t = pa_sprintf_malloc(_("Input %s"), _(source->description));
119 pa_log_info("Found output profile '%s'", t);
121 p = pa_card_profile_new(n, t, sizeof(struct profile_data));
126 p->priority = (sink ? sink->priority : 0)*100 + (source ? source->priority : 0);
128 p->n_sources = !!source;
131 p->max_sink_channels = sink->map.channels;
133 p->max_source_channels = source->map.channels;
135 d = PA_CARD_PROFILE_DATA(p);
137 d->sink_profile = sink;
138 d->source_profile = source;
140 pa_hashmap_put(profiles, p->name, p);
143 static void add_disabled_profile(pa_hashmap *profiles) {
145 struct profile_data *d;
147 p = pa_card_profile_new("off", _("Off"), sizeof(struct profile_data));
149 d = PA_CARD_PROFILE_DATA(p);
150 d->sink_profile = d->source_profile = NULL;
152 pa_hashmap_put(profiles, p->name, p);
155 static int card_set_profile(pa_card *c, pa_card_profile *new_profile) {
157 struct profile_data *nd, *od;
160 pa_assert(new_profile);
161 pa_assert_se(u = c->userdata);
163 nd = PA_CARD_PROFILE_DATA(new_profile);
164 od = PA_CARD_PROFILE_DATA(c->active_profile);
166 if (od->sink_profile != nd->sink_profile) {
167 pa_queue *inputs = NULL;
170 if (nd->sink_profile)
171 inputs = pa_sink_move_all_start(u->sink);
173 pa_alsa_sink_free(u->sink);
177 if (nd->sink_profile) {
178 u->sink = pa_alsa_sink_new(c->module, u->modargs, __FILE__, c, nd->sink_profile);
182 pa_sink_move_all_finish(u->sink, inputs, FALSE);
184 pa_sink_move_all_fail(inputs);
189 if (od->source_profile != nd->source_profile) {
190 pa_queue *outputs = NULL;
193 if (nd->source_profile)
194 outputs = pa_source_move_all_start(u->source);
196 pa_alsa_source_free(u->source);
200 if (nd->source_profile) {
201 u->source = pa_alsa_source_new(c->module, u->modargs, __FILE__, c, nd->source_profile);
205 pa_source_move_all_finish(u->source, outputs, FALSE);
207 pa_source_move_all_fail(outputs);
215 static void init_profile(struct userdata *u) {
216 struct profile_data *d;
220 d = PA_CARD_PROFILE_DATA(u->card->active_profile);
223 u->sink = pa_alsa_sink_new(u->module, u->modargs, __FILE__, u->card, d->sink_profile);
225 if (d->source_profile)
226 u->source = pa_alsa_source_new(u->module, u->modargs, __FILE__, u->card, d->source_profile);
229 static void set_card_name(pa_card_new_data *data, pa_modargs *ma, const char *device_id) {
235 pa_assert(device_id);
237 if ((n = pa_modargs_get_value(ma, "card_name", NULL))) {
238 pa_card_new_data_set_name(data, n);
239 data->namereg_fail = TRUE;
243 if ((n = pa_modargs_get_value(ma, "name", NULL)))
244 data->namereg_fail = TRUE;
247 data->namereg_fail = FALSE;
250 t = pa_sprintf_malloc("alsa_card.%s", n);
251 pa_card_new_data_set_name(data, t);
255 int pa__init(pa_module*m) {
256 pa_card_new_data data;
261 pa_alsa_redirect_errors_inc();
262 snd_config_update_free_global();
266 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
267 pa_log("Failed to parse module arguments");
271 m->userdata = u = pa_xnew(struct userdata, 1);
274 u->device_id = pa_xstrdup(pa_modargs_get_value(ma, "device_id", DEFAULT_DEVICE_ID));
280 if ((alsa_card_index = snd_card_get_index(u->device_id)) < 0) {
281 pa_log("Card '%s' doesn't exist: %s", u->device_id, snd_strerror(alsa_card_index));
285 pa_card_new_data_init(&data);
286 data.driver = __FILE__;
288 pa_alsa_init_proplist_card(m->core, data.proplist, alsa_card_index);
289 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_id);
290 set_card_name(&data, ma, u->device_id);
292 data.profiles = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
293 if (pa_alsa_probe_profiles(u->device_id, &m->core->default_sample_spec, enumerate_cb, data.profiles) < 0) {
294 pa_card_new_data_done(&data);
298 if (pa_hashmap_isempty(data.profiles)) {
299 pa_log("Failed to find a working profile.");
300 pa_card_new_data_done(&data);
304 add_disabled_profile(data.profiles);
306 u->card = pa_card_new(m->core, &data);
307 pa_card_new_data_done(&data);
312 u->card->userdata = u;
313 u->card->set_profile = card_set_profile;
325 int pa__get_n_used(pa_module *m) {
329 pa_assert_se(u = m->userdata);
332 (u->sink ? pa_sink_linked_by(u->sink) : 0) +
333 (u->source ? pa_source_linked_by(u->source) : 0);
336 void pa__done(pa_module*m) {
341 if (!(u = m->userdata))
345 pa_alsa_sink_free(u->sink);
348 pa_alsa_source_free(u->source);
351 pa_card_free(u->card);
354 pa_modargs_free(u->modargs);
356 pa_xfree(u->device_id);
360 snd_config_update_free_global();
361 pa_alsa_redirect_errors_dec();