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 <pulsecore/core-util.h>
28 #include <pulsecore/modargs.h>
29 #include <pulsecore/queue.h>
31 #include "alsa-util.h"
32 #include "alsa-sink.h"
33 #include "alsa-source.h"
34 #include "module-alsa-card-symdef.h"
36 PA_MODULE_AUTHOR("Lennart Poettering");
37 PA_MODULE_DESCRIPTION("ALSA Card");
38 PA_MODULE_VERSION(PACKAGE_VERSION);
39 PA_MODULE_LOAD_ONCE(FALSE);
41 "name=<name for the card/sink/source, to be prefixed> "
42 "card_name=<name for card> "
43 "sink_name=<name for sink> "
44 "source_name=<name for source> "
45 "device_id=<ALSA card index> "
46 "format=<sample format> "
48 "fragments=<number of fragments> "
49 "fragment_size=<fragment size> "
50 "mmap=<enable memory mapping?> "
51 "tsched=<enable system timer based scheduling mode?> "
52 "tsched_buffer_size=<buffer size when using timer based scheduling> "
53 "tsched_buffer_watermark=<lower fill watermark> "
54 "profile=<profile name> "
55 "ignore_dB=<ignore dB information from the device?>");
57 static const char* const valid_modargs[] = {
70 "tsched_buffer_watermark",
76 #define DEFAULT_DEVICE_ID "0"
92 const pa_alsa_profile_info *sink_profile, *source_profile;
95 static void enumerate_cb(
96 const pa_alsa_profile_info *sink,
97 const pa_alsa_profile_info *source,
100 pa_hashmap *profiles = (pa_hashmap *) userdata;
103 struct profile_data *d;
105 if (sink && source) {
106 n = pa_sprintf_malloc("output-%s+input-%s", sink->name, source->name);
107 t = pa_sprintf_malloc("Output %s + Input %s", sink->description, source->description);
109 n = pa_sprintf_malloc("output-%s", sink->name);
110 t = pa_sprintf_malloc("Output %s", sink->description);
113 n = pa_sprintf_malloc("input-%s", source->name);
114 t = pa_sprintf_malloc("Input %s", source->description);
117 pa_log_info("Found output profile '%s'", t);
119 p = pa_card_profile_new(n, t, sizeof(struct profile_data));
124 p->priority = (sink ? sink->priority : 0)*100 + (source ? source->priority : 0);
126 p->n_sources = !!source;
129 p->max_sink_channels = sink->map.channels;
131 p->max_source_channels = source->map.channels;
133 d = PA_CARD_PROFILE_DATA(p);
135 d->sink_profile = sink;
136 d->source_profile = source;
138 pa_hashmap_put(profiles, p->name, p);
141 static void add_disabled_profile(pa_hashmap *profiles) {
143 struct profile_data *d;
145 p = pa_card_profile_new("off", "Off", sizeof(struct profile_data));
147 d = PA_CARD_PROFILE_DATA(p);
148 d->sink_profile = d->source_profile = NULL;
150 pa_hashmap_put(profiles, p->name, p);
153 static int card_set_profile(pa_card *c, pa_card_profile *new_profile) {
155 struct profile_data *nd, *od;
158 pa_assert(new_profile);
159 pa_assert_se(u = c->userdata);
161 nd = PA_CARD_PROFILE_DATA(new_profile);
162 od = PA_CARD_PROFILE_DATA(c->active_profile);
164 if (od->sink_profile != nd->sink_profile) {
165 pa_queue *inputs = NULL;
168 if (nd->sink_profile)
169 inputs = pa_sink_move_all_start(u->sink);
171 pa_alsa_sink_free(u->sink);
175 if (nd->sink_profile) {
176 u->sink = pa_alsa_sink_new(c->module, u->modargs, __FILE__, c, nd->sink_profile);
180 pa_sink_move_all_finish(u->sink, inputs);
182 pa_sink_move_all_fail(inputs);
187 if (od->source_profile != nd->source_profile) {
188 pa_queue *outputs = NULL;
191 if (nd->source_profile)
192 outputs = pa_source_move_all_start(u->source);
194 pa_alsa_source_free(u->source);
198 if (nd->source_profile) {
199 u->source = pa_alsa_source_new(c->module, u->modargs, __FILE__, c, nd->source_profile);
203 pa_source_move_all_finish(u->source, outputs);
205 pa_source_move_all_fail(outputs);
213 static void init_profile(struct userdata *u) {
214 struct profile_data *d;
218 d = PA_CARD_PROFILE_DATA(u->card->active_profile);
221 u->sink = pa_alsa_sink_new(u->module, u->modargs, __FILE__, u->card, d->sink_profile);
223 if (d->source_profile)
224 u->source = pa_alsa_source_new(u->module, u->modargs, __FILE__, u->card, d->source_profile);
227 static void set_card_name(pa_card_new_data *data, pa_modargs *ma, const char *device_id) {
233 pa_assert(device_id);
235 if ((n = pa_modargs_get_value(ma, "card_name", NULL))) {
236 pa_card_new_data_set_name(data, n);
237 data->namereg_fail = TRUE;
241 if ((n = pa_modargs_get_value(ma, "name", NULL)))
242 data->namereg_fail = TRUE;
245 data->namereg_fail = FALSE;
248 t = pa_sprintf_malloc("alsa_card.%s", n);
249 pa_card_new_data_set_name(data, t);
253 int pa__init(pa_module*m) {
254 pa_card_new_data data;
259 pa_alsa_redirect_errors_inc();
260 snd_config_update_free_global();
264 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
265 pa_log("Failed to parse module arguments");
269 m->userdata = u = pa_xnew(struct userdata, 1);
272 u->device_id = pa_xstrdup(pa_modargs_get_value(ma, "device_id", DEFAULT_DEVICE_ID));
278 if ((alsa_card_index = snd_card_get_index(u->device_id)) < 0) {
279 pa_log("Card '%s' doesn't exist: %s", u->device_id, snd_strerror(alsa_card_index));
283 pa_card_new_data_init(&data);
284 data.driver = __FILE__;
286 pa_alsa_init_proplist_card(m->core, data.proplist, alsa_card_index);
287 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_id);
288 set_card_name(&data, ma, u->device_id);
290 data.profiles = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
291 if (pa_alsa_probe_profiles(u->device_id, &m->core->default_sample_spec, enumerate_cb, data.profiles) < 0) {
292 pa_card_new_data_done(&data);
296 if (pa_hashmap_isempty(data.profiles)) {
297 pa_log("Failed to find a working profile.");
298 pa_card_new_data_done(&data);
302 add_disabled_profile(data.profiles);
304 u->card = pa_card_new(m->core, &data);
305 pa_card_new_data_done(&data);
310 u->card->userdata = u;
311 u->card->set_profile = card_set_profile;
323 int pa__get_n_used(pa_module *m) {
327 pa_assert_se(u = m->userdata);
330 (u->sink ? pa_sink_linked_by(u->sink) : 0) +
331 (u->source ? pa_source_linked_by(u->source) : 0);
334 void pa__done(pa_module*m) {
339 if (!(u = m->userdata))
343 pa_alsa_sink_free(u->sink);
346 pa_alsa_source_free(u->source);
349 pa_card_free(u->card);
352 pa_modargs_free(u->modargs);
354 pa_xfree(u->device_id);
358 snd_config_update_free_global();
359 pa_alsa_redirect_errors_dec();