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>");
56 static const char* const valid_modargs[] = {
69 "tsched_buffer_watermark",
74 #define DEFAULT_DEVICE_ID "0"
90 const pa_alsa_profile_info *sink_profile, *source_profile;
93 static void enumerate_cb(
94 const pa_alsa_profile_info *sink,
95 const pa_alsa_profile_info *source,
98 pa_hashmap *profiles = (pa_hashmap *) userdata;
101 struct profile_data *d;
103 if (sink && source) {
104 n = pa_sprintf_malloc("output-%s+input-%s", sink->name, source->name);
105 t = pa_sprintf_malloc("Output %s + Input %s", sink->description, source->description);
107 n = pa_sprintf_malloc("output-%s", sink->name);
108 t = pa_sprintf_malloc("Output %s", sink->description);
111 n = pa_sprintf_malloc("input-%s", source->name);
112 t = pa_sprintf_malloc("Input %s", source->description);
115 pa_log_info("Found output profile '%s'", t);
117 p = pa_card_profile_new(n, t, sizeof(struct profile_data));
122 p->priority = (sink ? sink->priority : 0)*100 + (source ? source->priority : 0);
124 p->n_sources = !!source;
127 p->max_sink_channels = sink->map.channels;
129 p->max_source_channels = source->map.channels;
131 d = PA_CARD_PROFILE_DATA(p);
133 d->sink_profile = sink;
134 d->source_profile = source;
136 pa_hashmap_put(profiles, p->name, p);
139 static void add_disabled_profile(pa_hashmap *profiles) {
141 struct profile_data *d;
143 p = pa_card_profile_new("off", "Off", sizeof(struct profile_data));
145 d = PA_CARD_PROFILE_DATA(p);
146 d->sink_profile = d->source_profile = NULL;
148 pa_hashmap_put(profiles, p->name, p);
151 static int card_set_profile(pa_card *c, pa_card_profile *new_profile) {
153 struct profile_data *nd, *od;
156 pa_assert(new_profile);
157 pa_assert_se(u = c->userdata);
159 nd = PA_CARD_PROFILE_DATA(new_profile);
160 od = PA_CARD_PROFILE_DATA(c->active_profile);
162 if (od->sink_profile != nd->sink_profile) {
163 pa_queue *inputs = NULL;
166 if (nd->sink_profile)
167 inputs = pa_sink_move_all_start(u->sink);
169 pa_alsa_sink_free(u->sink);
173 if (nd->sink_profile) {
174 u->sink = pa_alsa_sink_new(c->module, u->modargs, __FILE__, c, nd->sink_profile);
178 pa_sink_move_all_finish(u->sink, inputs);
180 pa_sink_move_all_fail(inputs);
185 if (od->source_profile != nd->source_profile) {
186 pa_queue *outputs = NULL;
189 if (nd->source_profile)
190 outputs = pa_source_move_all_start(u->source);
192 pa_alsa_source_free(u->source);
196 if (nd->source_profile) {
197 u->source = pa_alsa_source_new(c->module, u->modargs, __FILE__, c, nd->source_profile);
201 pa_source_move_all_finish(u->source, outputs);
203 pa_source_move_all_fail(outputs);
211 static void init_profile(struct userdata *u) {
212 struct profile_data *d;
216 d = PA_CARD_PROFILE_DATA(u->card->active_profile);
219 u->sink = pa_alsa_sink_new(u->module, u->modargs, __FILE__, u->card, d->sink_profile);
221 if (d->source_profile)
222 u->source = pa_alsa_source_new(u->module, u->modargs, __FILE__, u->card, d->source_profile);
225 static void set_card_name(pa_card_new_data *data, pa_modargs *ma, const char *device_id) {
231 pa_assert(device_id);
233 if ((n = pa_modargs_get_value(ma, "card_name", NULL))) {
234 pa_card_new_data_set_name(data, n);
235 data->namereg_fail = TRUE;
239 if ((n = pa_modargs_get_value(ma, "name", NULL)))
240 data->namereg_fail = TRUE;
243 data->namereg_fail = FALSE;
246 t = pa_sprintf_malloc("alsa_card.%s", n);
247 pa_card_new_data_set_name(data, t);
251 int pa__init(pa_module*m) {
252 pa_card_new_data data;
257 pa_alsa_redirect_errors_inc();
258 snd_config_update_free_global();
262 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
263 pa_log("Failed to parse module arguments");
267 m->userdata = u = pa_xnew(struct userdata, 1);
270 u->device_id = pa_xstrdup(pa_modargs_get_value(ma, "device_id", DEFAULT_DEVICE_ID));
276 if ((alsa_card_index = snd_card_get_index(u->device_id)) < 0) {
277 pa_log("Card '%s' doesn't exist: %s", u->device_id, snd_strerror(alsa_card_index));
281 pa_card_new_data_init(&data);
282 data.driver = __FILE__;
284 pa_alsa_init_proplist_card(m->core, data.proplist, alsa_card_index);
285 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_id);
286 set_card_name(&data, ma, u->device_id);
288 data.profiles = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
289 if (pa_alsa_probe_profiles(u->device_id, &m->core->default_sample_spec, enumerate_cb, data.profiles) < 0) {
290 pa_card_new_data_done(&data);
294 if (pa_hashmap_isempty(data.profiles)) {
295 pa_log("Failed to find a working profile.");
296 pa_card_new_data_done(&data);
300 add_disabled_profile(data.profiles);
302 u->card = pa_card_new(m->core, &data);
303 pa_card_new_data_done(&data);
308 u->card->userdata = u;
309 u->card->set_profile = card_set_profile;
321 int pa__get_n_used(pa_module *m) {
325 pa_assert_se(u = m->userdata);
328 (u->sink ? pa_sink_linked_by(u->sink) : 0) +
329 (u->source ? pa_source_linked_by(u->source) : 0);
332 void pa__done(pa_module*m) {
337 if (!(u = m->userdata))
341 pa_alsa_sink_free(u->sink);
344 pa_alsa_source_free(u->source);
347 pa_card_free(u->card);
350 pa_modargs_free(u->modargs);
352 pa_xfree(u->device_id);
356 snd_config_update_free_global();
357 pa_alsa_redirect_errors_dec();