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"
96 const pa_alsa_profile_info *sink_profile, *source_profile;
99 static void enumerate_cb(
100 const pa_alsa_profile_info *sink,
101 const pa_alsa_profile_info *source,
104 struct userdata *u = userdata;
107 struct profile_data *d;
110 if (sink && source) {
111 n = pa_sprintf_malloc("output-%s+input-%s", sink->name, source->name);
112 t = pa_sprintf_malloc(_("Output %s + Input %s"), sink->description, _(source->description));
114 n = pa_sprintf_malloc("output-%s", sink->name);
115 t = pa_sprintf_malloc(_("Output %s"), _(sink->description));
118 n = pa_sprintf_malloc("input-%s", source->name);
119 t = pa_sprintf_malloc(_("Input %s"), _(source->description));
123 if (pa_channel_map_equal(&sink->map, &u->core->default_channel_map))
125 else if (sink->map.channels == u->core->default_channel_map.channels)
130 if (pa_channel_map_equal(&source->map, &u->core->default_channel_map))
132 else if (source->map.channels == u->core->default_channel_map.channels)
136 pa_log_info("Found output profile '%s'", t);
138 p = pa_card_profile_new(n, t, sizeof(struct profile_data));
144 (sink ? sink->priority : 0) * 100 +
145 (source ? source->priority : 0) +
149 p->n_sources = !!source;
152 p->max_sink_channels = sink->map.channels;
154 p->max_source_channels = source->map.channels;
156 d = PA_CARD_PROFILE_DATA(p);
158 d->sink_profile = sink;
159 d->source_profile = source;
161 pa_hashmap_put(u->profiles, p->name, p);
164 static void add_disabled_profile(pa_hashmap *profiles) {
166 struct profile_data *d;
168 p = pa_card_profile_new("off", _("Off"), sizeof(struct profile_data));
170 d = PA_CARD_PROFILE_DATA(p);
171 d->sink_profile = d->source_profile = NULL;
173 pa_hashmap_put(profiles, p->name, p);
176 static int card_set_profile(pa_card *c, pa_card_profile *new_profile) {
178 struct profile_data *nd, *od;
181 pa_assert(new_profile);
182 pa_assert_se(u = c->userdata);
184 nd = PA_CARD_PROFILE_DATA(new_profile);
185 od = PA_CARD_PROFILE_DATA(c->active_profile);
187 if (od->sink_profile != nd->sink_profile) {
188 pa_queue *inputs = NULL;
191 if (nd->sink_profile)
192 inputs = pa_sink_move_all_start(u->sink);
194 pa_alsa_sink_free(u->sink);
198 if (nd->sink_profile) {
199 u->sink = pa_alsa_sink_new(c->module, u->modargs, __FILE__, c, nd->sink_profile);
203 pa_sink_move_all_finish(u->sink, inputs, FALSE);
205 pa_sink_move_all_fail(inputs);
210 if (od->source_profile != nd->source_profile) {
211 pa_queue *outputs = NULL;
214 if (nd->source_profile)
215 outputs = pa_source_move_all_start(u->source);
217 pa_alsa_source_free(u->source);
221 if (nd->source_profile) {
222 u->source = pa_alsa_source_new(c->module, u->modargs, __FILE__, c, nd->source_profile);
226 pa_source_move_all_finish(u->source, outputs, FALSE);
228 pa_source_move_all_fail(outputs);
236 static void init_profile(struct userdata *u) {
237 struct profile_data *d;
241 d = PA_CARD_PROFILE_DATA(u->card->active_profile);
244 u->sink = pa_alsa_sink_new(u->module, u->modargs, __FILE__, u->card, d->sink_profile);
246 if (d->source_profile)
247 u->source = pa_alsa_source_new(u->module, u->modargs, __FILE__, u->card, d->source_profile);
250 static void set_card_name(pa_card_new_data *data, pa_modargs *ma, const char *device_id) {
256 pa_assert(device_id);
258 if ((n = pa_modargs_get_value(ma, "card_name", NULL))) {
259 pa_card_new_data_set_name(data, n);
260 data->namereg_fail = TRUE;
264 if ((n = pa_modargs_get_value(ma, "name", NULL)))
265 data->namereg_fail = TRUE;
268 data->namereg_fail = FALSE;
271 t = pa_sprintf_malloc("alsa_card.%s", n);
272 pa_card_new_data_set_name(data, t);
276 int pa__init(pa_module*m) {
277 pa_card_new_data data;
282 pa_alsa_redirect_errors_inc();
283 snd_config_update_free_global();
287 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
288 pa_log("Failed to parse module arguments");
292 m->userdata = u = pa_xnew(struct userdata, 1);
295 u->device_id = pa_xstrdup(pa_modargs_get_value(ma, "device_id", DEFAULT_DEVICE_ID));
301 if ((alsa_card_index = snd_card_get_index(u->device_id)) < 0) {
302 pa_log("Card '%s' doesn't exist: %s", u->device_id, snd_strerror(alsa_card_index));
306 pa_card_new_data_init(&data);
307 data.driver = __FILE__;
309 pa_alsa_init_proplist_card(m->core, data.proplist, alsa_card_index);
310 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_id);
311 set_card_name(&data, ma, u->device_id);
313 u->profiles = data.profiles = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
314 if (pa_alsa_probe_profiles(u->device_id, &m->core->default_sample_spec, enumerate_cb, u) < 0) {
315 pa_card_new_data_done(&data);
319 if (pa_hashmap_isempty(data.profiles)) {
320 pa_log("Failed to find a working profile.");
321 pa_card_new_data_done(&data);
325 add_disabled_profile(data.profiles);
327 u->card = pa_card_new(m->core, &data);
328 pa_card_new_data_done(&data);
333 u->card->userdata = u;
334 u->card->set_profile = card_set_profile;
346 int pa__get_n_used(pa_module *m) {
350 pa_assert_se(u = m->userdata);
353 (u->sink ? pa_sink_linked_by(u->sink) : 0) +
354 (u->source ? pa_source_linked_by(u->source) : 0);
357 void pa__done(pa_module*m) {
362 if (!(u = m->userdata))
366 pa_alsa_sink_free(u->sink);
369 pa_alsa_source_free(u->source);
372 pa_card_free(u->card);
375 pa_modargs_free(u->modargs);
377 pa_xfree(u->device_id);
381 snd_config_update_free_global();
382 pa_alsa_redirect_errors_dec();