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>
30 #include "alsa-util.h"
31 #include "alsa-sink.h"
32 #include "alsa-source.h"
33 #include "module-alsa-card-symdef.h"
35 PA_MODULE_AUTHOR("Lennart Poettering");
36 PA_MODULE_DESCRIPTION("ALSA Card");
37 PA_MODULE_VERSION(PACKAGE_VERSION);
38 PA_MODULE_LOAD_ONCE(FALSE);
40 "name=<name for the card/sink/source, to be prefixed> "
41 "card_name=<name for card> "
42 "sink_name=<name for sink> "
43 "source_name=<name for source> "
44 "device_id=<ALSA card index> "
45 "format=<sample format> "
47 "fragments=<number of fragments> "
48 "fragment_size=<fragment size> "
49 "mmap=<enable memory mapping?> "
50 "tsched=<enable system timer based scheduling mode?> "
51 "tsched_buffer_size=<buffer size when using timer based scheduling> "
52 "tsched_buffer_watermark=<lower fill watermark> "
53 "profile=<profile name>");
55 static const char* const valid_modargs[] = {
68 "tsched_buffer_watermark",
73 #define DEFAULT_DEVICE_ID "0"
89 const pa_alsa_profile_info *sink_profile, *source_profile;
92 static void enumerate_cb(
93 const pa_alsa_profile_info *sink,
94 const pa_alsa_profile_info *source,
97 pa_hashmap *profiles = (pa_hashmap *) userdata;
100 struct profile_data *d;
102 if (sink && source) {
103 n = pa_sprintf_malloc("output-%s+input-%s", sink->name, source->name);
104 t = pa_sprintf_malloc("Output %s + Input %s", sink->description, source->description);
106 n = pa_sprintf_malloc("output-%s", sink->name);
107 t = pa_sprintf_malloc("Output %s", sink->description);
110 n = pa_sprintf_malloc("input-%s", source->name);
111 t = pa_sprintf_malloc("Input %s", source->description);
114 pa_log_info("Found output profile '%s'", t);
116 p = pa_card_profile_new(n, t, sizeof(struct profile_data));
121 p->priority = (sink ? sink->priority : 0)*100 + (source ? source->priority : 0);
123 p->n_sources = !!source;
126 p->max_sink_channels = sink->map.channels;
128 p->max_source_channels = source->map.channels;
130 d = PA_CARD_PROFILE_DATA(p);
132 d->sink_profile = sink;
133 d->source_profile = source;
135 pa_hashmap_put(profiles, p->name, p);
138 static void add_disabled_profile(pa_hashmap *profiles) {
140 struct profile_data *d;
142 p = pa_card_profile_new("off", "Off", sizeof(struct profile_data));
144 d = PA_CARD_PROFILE_DATA(p);
145 d->sink_profile = d->source_profile = NULL;
147 pa_hashmap_put(profiles, p->name, p);
150 static int card_set_profile(pa_card *c, pa_card_profile *new_profile) {
152 struct profile_data *nd, *od;
155 pa_assert(new_profile);
156 pa_assert_se(u = c->userdata);
158 nd = PA_CARD_PROFILE_DATA(new_profile);
159 od = PA_CARD_PROFILE_DATA(c->active_profile);
161 if (od->sink_profile != nd->sink_profile) {
163 pa_alsa_sink_free(u->sink);
167 if (nd->sink_profile)
168 u->sink = pa_alsa_sink_new(c->module, u->modargs, __FILE__, c, nd->sink_profile);
171 if (od->source_profile != nd->source_profile) {
173 pa_alsa_source_free(u->source);
177 if (nd->source_profile)
178 u->source = pa_alsa_source_new(c->module, u->modargs, __FILE__, c, nd->source_profile);
184 static void init_profile(struct userdata *u) {
185 struct profile_data *d;
189 d = PA_CARD_PROFILE_DATA(u->card->active_profile);
192 u->sink = pa_alsa_sink_new(u->module, u->modargs, __FILE__, u->card, d->sink_profile);
194 if (d->source_profile)
195 u->source = pa_alsa_source_new(u->module, u->modargs, __FILE__, u->card, d->source_profile);
198 static void set_card_name(pa_card_new_data *data, pa_modargs *ma, const char *device_id) {
204 pa_assert(device_id);
206 if ((n = pa_modargs_get_value(ma, "card_name", NULL))) {
207 pa_card_new_data_set_name(data, n);
208 data->namereg_fail = TRUE;
212 if ((n = pa_modargs_get_value(ma, "name", NULL)))
213 data->namereg_fail = TRUE;
216 data->namereg_fail = FALSE;
219 t = pa_sprintf_malloc("alsa_card.%s", n);
220 pa_card_new_data_set_name(data, t);
224 int pa__init(pa_module*m) {
225 pa_card_new_data data;
230 pa_alsa_redirect_errors_inc();
231 snd_config_update_free_global();
235 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
236 pa_log("Failed to parse module arguments");
240 m->userdata = u = pa_xnew(struct userdata, 1);
243 u->device_id = pa_xstrdup(pa_modargs_get_value(ma, "device_id", DEFAULT_DEVICE_ID));
249 if ((alsa_card_index = snd_card_get_index(u->device_id)) < 0) {
250 pa_log("Card '%s' doesn't exist: %s", u->device_id, snd_strerror(alsa_card_index));
254 pa_card_new_data_init(&data);
255 data.driver = __FILE__;
257 pa_alsa_init_proplist_card(data.proplist, alsa_card_index);
258 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_id);
259 set_card_name(&data, ma, u->device_id);
261 data.profiles = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
262 if (pa_alsa_probe_profiles(u->device_id, &m->core->default_sample_spec, enumerate_cb, data.profiles) < 0) {
263 pa_card_new_data_done(&data);
267 if (pa_hashmap_isempty(data.profiles)) {
268 pa_log("Failed to find a working profile.");
269 pa_card_new_data_done(&data);
273 add_disabled_profile(data.profiles);
275 u->card = pa_card_new(m->core, &data);
276 pa_card_new_data_done(&data);
281 u->card->userdata = u;
282 u->card->set_profile = card_set_profile;
294 int pa__get_n_used(pa_module *m) {
298 pa_assert_se(u = m->userdata);
301 (u->sink ? pa_sink_linked_by(u->sink) : 0) +
302 (u->source ? pa_source_linked_by(u->source) : 0);
305 void pa__done(pa_module*m) {
310 if (!(u = m->userdata))
314 pa_alsa_sink_free(u->sink);
317 pa_alsa_source_free(u->source);
320 pa_card_free(u->card);
323 pa_modargs_free(u->modargs);
325 pa_xfree(u->device_id);
329 snd_config_update_free_global();
330 pa_alsa_redirect_errors_dec();