2 This file is part of PulseAudio.
4 Copyright 2006-2008 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 2.1 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
29 #include <sys/types.h>
34 #include <pulse/xmalloc.h>
35 #include <pulse/volume.h>
36 #include <pulse/timeval.h>
37 #include <pulse/util.h>
38 #include <pulse/rtclock.h>
40 #include <pulsecore/core-error.h>
41 #include <pulsecore/module.h>
42 #include <pulsecore/core-util.h>
43 #include <pulsecore/modargs.h>
44 #include <pulsecore/log.h>
45 #include <pulsecore/core-subscribe.h>
46 #include <pulsecore/card.h>
47 #include <pulsecore/namereg.h>
48 #include <pulsecore/database.h>
50 #include "module-card-restore-symdef.h"
52 PA_MODULE_AUTHOR("Lennart Poettering");
53 PA_MODULE_DESCRIPTION("Automatically restore profile of cards");
54 PA_MODULE_VERSION(PACKAGE_VERSION);
55 PA_MODULE_LOAD_ONCE(TRUE);
57 #define SAVE_INTERVAL (10 * PA_USEC_PER_SEC)
59 static const char* const valid_modargs[] = {
66 pa_subscription *subscription;
67 pa_hook_slot *card_new_hook_slot;
68 pa_time_event *save_time_event;
69 pa_database *database;
72 #define ENTRY_VERSION 1
76 char profile[PA_NAME_MAX];
79 static void save_time_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *t, void *userdata) {
80 struct userdata *u = userdata;
86 pa_assert(e == u->save_time_event);
87 u->core->mainloop->time_free(u->save_time_event);
88 u->save_time_event = NULL;
90 pa_database_sync(u->database);
91 pa_log_info("Synced.");
94 static struct entry* read_entry(struct userdata *u, const char *name) {
101 key.data = (char*) name;
102 key.size = strlen(name);
106 if (!pa_database_get(u->database, &key, &data))
109 if (data.size != sizeof(struct entry)) {
110 pa_log_debug("Database contains entry for card %s of wrong size %lu != %lu. Probably due to upgrade, ignoring.", name, (unsigned long) data.size, (unsigned long) sizeof(struct entry));
114 e = (struct entry*) data.data;
116 if (e->version != ENTRY_VERSION) {
117 pa_log_debug("Version of database entry for card %s doesn't match our version. Probably due to upgrade, ignoring.", name);
121 if (!memchr(e->profile, 0, sizeof(e->profile))) {
122 pa_log_warn("Database contains entry for card %s with missing NUL byte in profile name", name);
130 pa_datum_free(&data);
134 static void trigger_save(struct userdata *u) {
135 if (u->save_time_event)
138 u->save_time_event = pa_core_rttime_new(u->core, pa_rtclock_now() + SAVE_INTERVAL, save_time_callback, u);
141 static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint32_t idx, void *userdata) {
142 struct userdata *u = userdata;
143 struct entry entry, *old;
150 if (t != (PA_SUBSCRIPTION_EVENT_CARD|PA_SUBSCRIPTION_EVENT_NEW) &&
151 t != (PA_SUBSCRIPTION_EVENT_CARD|PA_SUBSCRIPTION_EVENT_CHANGE))
155 entry.version = ENTRY_VERSION;
157 if (!(card = pa_idxset_get_by_index(c->cards, idx)))
160 if (!card->save_profile)
163 pa_strlcpy(entry.profile, card->active_profile ? card->active_profile->name : "", sizeof(entry.profile));
165 if ((old = read_entry(u, card->name))) {
167 if (strncmp(old->profile, entry.profile, sizeof(entry.profile)) == 0) {
175 key.data = card->name;
176 key.size = strlen(card->name);
179 data.size = sizeof(entry);
181 pa_log_info("Storing profile for card %s.", card->name);
183 pa_database_set(u->database, &key, &data, TRUE);
188 static pa_hook_result_t card_new_hook_callback(pa_core *c, pa_card_new_data *new_data, struct userdata *u) {
193 if ((e = read_entry(u, new_data->name)) && e->profile[0]) {
195 if (!new_data->active_profile) {
196 pa_log_info("Restoring profile for card %s.", new_data->name);
197 pa_card_new_data_set_profile(new_data, e->profile);
198 new_data->save_profile = TRUE;
200 pa_log_debug("Not restoring profile for card %s, because already set.", new_data->name);
208 int pa__init(pa_module*m) {
209 pa_modargs *ma = NULL;
217 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
218 pa_log("Failed to parse module arguments");
222 m->userdata = u = pa_xnew0(struct userdata, 1);
226 u->subscription = pa_subscription_new(m->core, PA_SUBSCRIPTION_MASK_CARD, subscribe_callback, u);
228 u->card_new_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_CARD_NEW], PA_HOOK_EARLY, (pa_hook_cb_t) card_new_hook_callback, u);
230 if (!(fname = pa_state_path("card-database", TRUE)))
233 if (!(u->database = pa_database_open(fname, TRUE))) {
234 pa_log("Failed to open volume database '%s': %s", fname, pa_cstrerror(errno));
239 pa_log_info("Sucessfully opened database file '%s'.", fname);
242 for (card = pa_idxset_first(m->core->cards, &idx); card; card = pa_idxset_next(m->core->cards, &idx))
243 subscribe_callback(m->core, PA_SUBSCRIPTION_EVENT_CARD|PA_SUBSCRIPTION_EVENT_NEW, card->index, u);
257 void pa__done(pa_module*m) {
262 if (!(u = m->userdata))
266 pa_subscription_free(u->subscription);
268 if (u->card_new_hook_slot)
269 pa_hook_slot_free(u->card_new_hook_slot);
271 if (u->save_time_event)
272 u->core->mainloop->time_free(u->save_time_event);
275 pa_database_close(u->database);