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 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>
35 #include <pulse/xmalloc.h>
36 #include <pulse/volume.h>
37 #include <pulse/timeval.h>
38 #include <pulse/util.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/sink-input.h>
47 #include <pulsecore/source-output.h>
48 #include <pulsecore/namereg.h>
50 #include "module-device-restore-symdef.h"
52 PA_MODULE_AUTHOR("Lennart Poettering");
53 PA_MODULE_DESCRIPTION("Automatically restore the volume/mute state of devices");
54 PA_MODULE_VERSION(PACKAGE_VERSION);
55 PA_MODULE_LOAD_ONCE(TRUE);
57 #define SAVE_INTERVAL 10
59 static const char* const valid_modargs[] = {
68 pa_subscription *subscription;
70 *sink_fixate_hook_slot,
71 *source_fixate_hook_slot;
72 pa_time_event *save_time_event;
75 pa_bool_t restore_volume:1;
76 pa_bool_t restore_muted:1;
80 pa_channel_map channel_map;
85 static void save_time_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *tv, void *userdata) {
86 struct userdata *u = userdata;
93 pa_assert(e == u->save_time_event);
94 u->core->mainloop->time_free(u->save_time_event);
95 u->save_time_event = NULL;
97 gdbm_sync(u->gdbm_file);
98 pa_log_info("Synced.");
101 static struct entry* read_entry(struct userdata *u, char *name) {
109 key.dsize = (int) strlen(name);
111 data = gdbm_fetch(u->gdbm_file, key);
116 if (data.dsize != sizeof(struct entry)) {
117 pa_log_warn("Database contains entry for device %s of wrong size %lu != %lu", name, (unsigned long) data.dsize, (unsigned long) sizeof(struct entry));
121 e = (struct entry*) data.dptr;
123 if (!(pa_cvolume_valid(&e->volume))) {
124 pa_log_warn("Invalid volume stored in database for device %s", name);
128 if (!(pa_channel_map_valid(&e->channel_map))) {
129 pa_log_warn("Invalid channel map stored in database for device %s", name);
133 if (e->volume.channels != e->channel_map.channels) {
134 pa_log_warn("Volume and channel map don't match in database entry for device %s", name);
146 static void trigger_save(struct userdata *u) {
149 if (u->save_time_event)
152 pa_gettimeofday(&tv);
153 tv.tv_sec += SAVE_INTERVAL;
154 u->save_time_event = u->core->mainloop->time_new(u->core->mainloop, &tv, save_time_callback, u);
157 static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint32_t idx, void *userdata) {
158 struct userdata *u = userdata;
159 struct entry entry, *old;
166 if (t != (PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_NEW) &&
167 t != (PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE) &&
168 t != (PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_NEW) &&
169 t != (PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE))
172 memset(&entry, 0, sizeof(entry));
174 if ((t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SINK) {
177 if (!(sink = pa_idxset_get_by_index(c->sinks, idx)))
180 name = pa_sprintf_malloc("sink:%s", sink->name);
181 entry.channel_map = sink->channel_map;
182 entry.volume = *pa_sink_get_volume(sink, FALSE);
183 entry.muted = pa_sink_get_mute(sink, FALSE);
188 pa_assert((t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SOURCE);
190 if (!(source = pa_idxset_get_by_index(c->sources, idx)))
193 name = pa_sprintf_malloc("source:%s", source->name);
194 entry.channel_map = source->channel_map;
195 entry.volume = *pa_source_get_volume(source, FALSE);
196 entry.muted = pa_source_get_mute(source, FALSE);
199 if ((old = read_entry(u, name))) {
201 if (pa_cvolume_equal(pa_cvolume_remap(&old->volume, &old->channel_map, &entry.channel_map), &entry.volume) &&
202 !old->muted == !entry.muted) {
213 key.dsize = (int) strlen(name);
215 data.dptr = (void*) &entry;
216 data.dsize = sizeof(entry);
218 pa_log_info("Storing volume/mute for device %s.", name);
220 gdbm_store(u->gdbm_file, key, data, GDBM_REPLACE);
227 static pa_hook_result_t sink_fixate_hook_callback(pa_core *c, pa_sink_new_data *new_data, struct userdata *u) {
233 name = pa_sprintf_malloc("sink:%s", new_data->name);
235 if ((e = read_entry(u, name))) {
237 if (u->restore_volume) {
238 pa_log_info("Restoring volume for sink %s.", new_data->name);
239 pa_sink_new_data_set_volume(new_data, pa_cvolume_remap(&e->volume, &e->channel_map, &new_data->channel_map));
242 if (u->restore_muted) {
243 pa_log_info("Restoring mute state for sink %s.", new_data->name);
244 pa_sink_new_data_set_muted(new_data, e->muted);
255 static pa_hook_result_t source_fixate_hook_callback(pa_core *c, pa_source_new_data *new_data, struct userdata *u) {
261 name = pa_sprintf_malloc("source:%s", new_data->name);
263 if ((e = read_entry(u, name))) {
265 if (u->restore_volume) {
266 pa_log_info("Restoring volume for source %s.", new_data->name);
267 pa_source_new_data_set_volume(new_data, pa_cvolume_remap(&e->volume, &e->channel_map, &new_data->channel_map));
270 if (u->restore_muted) {
271 pa_log_info("Restoring mute state for source %s.", new_data->name);
272 pa_source_new_data_set_muted(new_data, e->muted);
283 int pa__init(pa_module*m) {
284 pa_modargs *ma = NULL;
290 pa_bool_t restore_volume = TRUE, restore_muted = TRUE;
295 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
296 pa_log("Failed to parse module arguments");
300 if (pa_modargs_get_value_boolean(ma, "restore_volume", &restore_volume) < 0 ||
301 pa_modargs_get_value_boolean(ma, "restore_muted", &restore_muted) < 0) {
302 pa_log("restore_volume= and restore_muted= expect boolean arguments");
306 if (!restore_muted && !restore_volume)
307 pa_log_warn("Neither restoring volume nor restoring muted enabled!");
309 m->userdata = u = pa_xnew(struct userdata, 1);
312 u->save_time_event = NULL;
313 u->restore_volume = restore_volume;
314 u->restore_muted = restore_muted;
317 u->subscription = pa_subscription_new(m->core, PA_SUBSCRIPTION_MASK_SINK|PA_SUBSCRIPTION_MASK_SOURCE, subscribe_callback, u);
319 if (restore_muted || restore_volume) {
320 u->sink_fixate_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_FIXATE], PA_HOOK_EARLY, (pa_hook_cb_t) sink_fixate_hook_callback, u);
321 u->source_fixate_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], PA_HOOK_EARLY, (pa_hook_cb_t) source_fixate_hook_callback, u);
324 /* We include the host identifier in the file name because gdbm
325 * files are CPU dependant, and we don't want things to go wrong
326 * if we are on a multiarch system. */
328 fn = pa_sprintf_malloc("device-volumes."CANONICAL_HOST".gdbm");
329 fname = pa_state_path(fn, TRUE);
335 if (!(u->gdbm_file = gdbm_open(fname, 0, GDBM_WRCREAT|GDBM_NOLOCK, 0600, NULL))) {
336 pa_log("Failed to open volume database '%s': %s", fname, gdbm_strerror(gdbm_errno));
341 /* By default the cache of gdbm is rather large, let's reduce it a bit to save memory */
342 gdbm_cache_size = 10;
343 gdbm_setopt(u->gdbm_file, GDBM_CACHESIZE, &gdbm_cache_size, sizeof(gdbm_cache_size));
345 pa_log_info("Sucessfully opened database file '%s'.", fname);
348 for (sink = pa_idxset_first(m->core->sinks, &idx); sink; sink = pa_idxset_next(m->core->sinks, &idx))
349 subscribe_callback(m->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_NEW, sink->index, u);
351 for (source = pa_idxset_first(m->core->sources, &idx); source; source = pa_idxset_next(m->core->sources, &idx))
352 subscribe_callback(m->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_NEW, source->index, u);
366 void pa__done(pa_module*m) {
371 if (!(u = m->userdata))
375 pa_subscription_free(u->subscription);
377 if (u->sink_fixate_hook_slot)
378 pa_hook_slot_free(u->sink_fixate_hook_slot);
379 if (u->source_fixate_hook_slot)
380 pa_hook_slot_free(u->source_fixate_hook_slot);
382 if (u->save_time_event)
383 u->core->mainloop->time_free(u->save_time_event);
386 gdbm_close(u->gdbm_file);