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>
33 #include <pulse/gccmacro.h>
34 #include <pulse/xmalloc.h>
35 #include <pulse/timeval.h>
36 #include <pulse/rtclock.h>
38 #include <pulsecore/core-error.h>
39 #include <pulsecore/module.h>
40 #include <pulsecore/core-util.h>
41 #include <pulsecore/modargs.h>
42 #include <pulsecore/log.h>
43 #include <pulsecore/core-subscribe.h>
44 #include <pulsecore/card.h>
45 #include <pulsecore/namereg.h>
46 #include <pulsecore/database.h>
47 #include <pulsecore/tagstruct.h>
49 #include "module-card-restore-symdef.h"
51 PA_MODULE_AUTHOR("Lennart Poettering");
52 PA_MODULE_DESCRIPTION("Automatically restore profile of cards");
53 PA_MODULE_VERSION(PACKAGE_VERSION);
54 PA_MODULE_LOAD_ONCE(TRUE);
56 #define SAVE_INTERVAL (10 * PA_USEC_PER_SEC)
58 static const char* const valid_modargs[] = {
65 pa_hook_slot *card_new_hook_slot;
66 pa_hook_slot *card_put_hook_slot;
67 pa_hook_slot *card_profile_hook_slot;
68 pa_hook_slot *port_new_hook_slot;
69 pa_hook_slot *port_offset_hook_slot;
70 pa_time_event *save_time_event;
71 pa_database *database;
75 #define ENTRY_VERSION 2
85 pa_hashmap *ports; /* Port name -> struct port_info */
88 static void save_time_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *t, void *userdata) {
89 struct userdata *u = userdata;
95 pa_assert(e == u->save_time_event);
96 u->core->mainloop->time_free(u->save_time_event);
97 u->save_time_event = NULL;
99 pa_database_sync(u->database);
100 pa_log_info("Synced.");
103 static void trigger_save(struct userdata *u) {
104 if (u->save_time_event)
107 u->save_time_event = pa_core_rttime_new(u->core, pa_rtclock_now() + SAVE_INTERVAL, save_time_callback, u);
110 static struct entry* entry_new(void) {
111 struct entry *r = pa_xnew0(struct entry, 1);
112 r->version = ENTRY_VERSION;
113 r->ports = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
117 static struct port_info *port_info_new(pa_device_port *port) {
118 struct port_info *p_info;
121 p_info = pa_xnew(struct port_info, 1);
122 p_info->name = pa_xstrdup(port->name);
123 p_info->offset = port->latency_offset;
125 p_info = pa_xnew0(struct port_info, 1);
130 static void port_info_update(struct port_info *p_info, pa_device_port *port) {
134 pa_xfree(p_info->name);
135 p_info->name = pa_xstrdup(port->name);
136 p_info->offset = port->latency_offset;
139 static void port_info_free(struct port_info *p_info) {
142 pa_xfree(p_info->name);
146 static void entry_free(struct entry* e) {
149 pa_xfree(e->profile);
150 pa_hashmap_free(e->ports, (pa_free_cb_t) port_info_free);
155 static struct entry *entry_from_card(pa_card *card) {
156 struct port_info *p_info;
158 pa_device_port *port;
164 if (card->save_profile)
165 entry->profile = pa_xstrdup(card->active_profile->name);
167 PA_HASHMAP_FOREACH(port, card->ports, state) {
168 p_info = port_info_new(port);
169 pa_assert_se(pa_hashmap_put(entry->ports, p_info->name, p_info) >= 0);
175 static bool entrys_equal(struct entry *a, struct entry *b) {
176 struct port_info *Ap_info, *Bp_info;
182 if (!pa_streq(a->profile, b->profile) ||
183 pa_hashmap_size(a->ports) != pa_hashmap_size(b->ports))
186 PA_HASHMAP_FOREACH(Ap_info, a->ports, state) {
187 if ((Bp_info = pa_hashmap_get(b->ports, Ap_info->name))) {
188 if (Ap_info->offset != Bp_info->offset)
197 static pa_bool_t entry_write(struct userdata *u, const char *name, const struct entry *e) {
202 struct port_info *p_info;
208 t = pa_tagstruct_new(NULL, 0);
209 pa_tagstruct_putu8(t, e->version);
210 pa_tagstruct_puts(t, e->profile);
211 pa_tagstruct_putu32(t, pa_hashmap_size(e->ports));
213 PA_HASHMAP_FOREACH(p_info, e->ports, state) {
214 pa_tagstruct_puts(t, p_info->name);
215 pa_tagstruct_puts64(t, p_info->offset);
218 key.data = (char *) name;
219 key.size = strlen(name);
221 data.data = (void*)pa_tagstruct_data(t, &data.size);
223 r = (pa_database_set(u->database, &key, &data, TRUE) == 0);
225 pa_tagstruct_free(t);
230 #ifdef ENABLE_LEGACY_DATABASE_ENTRY_FORMAT
232 #define LEGACY_ENTRY_VERSION 1
233 static struct entry* legacy_entry_read(struct userdata *u, pa_datum *data) {
234 struct legacy_entry {
236 char profile[PA_NAME_MAX];
238 struct legacy_entry *le;
244 if (data->size != sizeof(struct legacy_entry)) {
245 pa_log_debug("Size does not match.");
249 le = (struct legacy_entry*)data->data;
251 if (le->version != LEGACY_ENTRY_VERSION) {
252 pa_log_debug("Version mismatch.");
256 if (!memchr(le->profile, 0, sizeof(le->profile))) {
257 pa_log_warn("Profile has missing NUL byte.");
262 e->profile = pa_xstrdup(le->profile);
267 static struct entry* entry_read(struct userdata *u, const char *name) {
269 struct entry *e = NULL;
270 pa_tagstruct *t = NULL;
276 key.data = (char*) name;
277 key.size = strlen(name);
281 if (!pa_database_get(u->database, &key, &data))
284 t = pa_tagstruct_new(data.data, data.size);
287 if (pa_tagstruct_getu8(t, &e->version) < 0 ||
288 e->version > ENTRY_VERSION ||
289 pa_tagstruct_gets(t, &profile) < 0) {
297 e->profile = pa_xstrdup(profile);
299 if (e->version >= 2) {
300 uint32_t port_count = 0;
301 const char *port_name = NULL;
302 int64_t port_offset = 0;
303 struct port_info *p_info;
306 if (pa_tagstruct_getu32(t, &port_count) < 0)
309 for (i = 0; i < port_count; i++) {
310 if (pa_tagstruct_gets(t, &port_name) < 0 ||
312 pa_hashmap_get(e->ports, port_name) ||
313 pa_tagstruct_gets64(t, &port_offset) < 0)
316 p_info = port_info_new(NULL);
317 p_info->name = pa_xstrdup(port_name);
318 p_info->offset = port_offset;
320 pa_assert_se(pa_hashmap_put(e->ports, p_info->name, p_info) >= 0);
324 if (!pa_tagstruct_eof(t))
327 pa_tagstruct_free(t);
328 pa_datum_free(&data);
334 pa_log_debug("Database contains invalid data for key: %s (probably pre-v1.0 data)", name);
339 pa_tagstruct_free(t);
341 #ifdef ENABLE_LEGACY_DATABASE_ENTRY_FORMAT
342 pa_log_debug("Attempting to load legacy (pre-v1.0) data for key: %s", name);
343 if ((e = legacy_entry_read(u, &data))) {
344 pa_log_debug("Success. Saving new format for key: %s", name);
345 if (entry_write(u, name, e))
347 pa_datum_free(&data);
350 pa_log_debug("Unable to load legacy (pre-v1.0) data for key: %s. Ignoring.", name);
353 pa_datum_free(&data);
357 static void show_full_info(pa_card *card) {
360 if (card->save_profile)
361 pa_log_info("Storing profile and port latency offsets for card %s.", card->name);
363 pa_log_info("Storing port latency offsets for card %s.", card->name);
366 static pa_hook_result_t card_put_hook_callback(pa_core *c, pa_card *card, struct userdata *u) {
367 struct entry *entry, *old;
371 entry = entry_from_card(card);
373 if ((old = entry_read(u, card->name))) {
374 if (!card->save_profile)
375 entry->profile = pa_xstrdup(old->profile);
376 if (entrys_equal(entry, old))
380 show_full_info(card);
382 if (entry_write(u, card->name, entry))
393 static pa_hook_result_t card_profile_change_callback(pa_core *c, pa_card *card, struct userdata *u) {
398 if (!card->save_profile)
401 if ((entry = entry_read(u, card->name))) {
402 entry->profile = pa_xstrdup(card->active_profile->name);
403 pa_log_info("Storing card profile for card %s.", card->name);
405 entry = entry_from_card(card);
406 show_full_info(card);
409 if (entry_write(u, card->name, entry))
416 static pa_hook_result_t card_port_add_callback(pa_core *c, pa_device_port *port, struct userdata *u) {
423 if ((entry = entry_read(u, card->name))) {
424 struct port_info *p_info;
426 if ((p_info = pa_hashmap_get(entry->ports, port->name)))
427 port_info_update(p_info, port);
429 p_info = port_info_new(port);
430 pa_assert_se(pa_hashmap_put(entry->ports, p_info->name, p_info) >= 0);
433 pa_log_info("Storing port info for port %s on card %s.", port->name, card->name);
436 entry = entry_from_card(card);
437 show_full_info(card);
440 if (entry_write(u, card->name, entry))
447 static pa_hook_result_t port_offset_change_callback(pa_core *c, pa_device_port *port, struct userdata *u) {
454 if ((entry = entry_read(u, card->name))) {
455 struct port_info *p_info;
457 if ((p_info = pa_hashmap_get(entry->ports, port->name)))
458 p_info->offset = port->latency_offset;
460 p_info = port_info_new(port);
461 pa_assert_se(pa_hashmap_put(entry->ports, p_info->name, p_info) >= 0);
464 pa_log_info("Storing latency offset for port %s on card %s.", port->name, card->name);
467 entry_from_card(card);
468 show_full_info(card);
471 if (entry_write(u, card->name, entry))
478 static pa_hook_result_t card_new_hook_callback(pa_core *c, pa_card_new_data *new_data, struct userdata *u) {
482 struct port_info *p_info;
486 if (!(e = entry_read(u, new_data->name)))
490 if (!new_data->active_profile) {
491 pa_card_new_data_set_profile(new_data, e->profile);
492 pa_log_info("Restored profile '%s' for card %s.", new_data->active_profile, new_data->name);
493 new_data->save_profile = TRUE;
496 pa_log_debug("Not restoring profile for card %s, because already set.", new_data->name);
499 /* Always restore the latency offsets because their
500 * initial value is always 0 */
502 pa_log_info("Restoring port latency offsets for card %s.", new_data->name);
504 PA_HASHMAP_FOREACH(p_info, e->ports, state)
505 if ((p = pa_hashmap_get(new_data->ports, p_info->name)))
506 p->latency_offset = p_info->offset;
513 int pa__init(pa_module*m) {
514 pa_modargs *ma = NULL;
520 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
521 pa_log("Failed to parse module arguments");
525 m->userdata = u = pa_xnew0(struct userdata, 1);
529 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);
530 u->card_put_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_CARD_PUT], PA_HOOK_NORMAL, (pa_hook_cb_t) card_put_hook_callback, u);
531 u->card_profile_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_CARD_PROFILE_CHANGED], PA_HOOK_NORMAL, (pa_hook_cb_t) card_profile_change_callback, u);
532 u->port_new_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_PORT_ADDED], PA_HOOK_NORMAL, (pa_hook_cb_t) card_port_add_callback, u);
533 u->port_offset_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_PORT_LATENCY_OFFSET_CHANGED], PA_HOOK_NORMAL, (pa_hook_cb_t) port_offset_change_callback, u);
534 u->hooks_connected = true;
536 if (!(fname = pa_state_path("card-database", TRUE)))
539 if (!(u->database = pa_database_open(fname, TRUE))) {
540 pa_log("Failed to open volume database '%s': %s", fname, pa_cstrerror(errno));
545 pa_log_info("Successfully opened database file '%s'.", fname);
560 void pa__done(pa_module*m) {
565 if (!(u = m->userdata))
568 if (u->hooks_connected) {
569 pa_hook_slot_free(u->card_new_hook_slot);
570 pa_hook_slot_free(u->card_put_hook_slot);
571 pa_hook_slot_free(u->card_profile_hook_slot);
572 pa_hook_slot_free(u->port_new_hook_slot);
573 pa_hook_slot_free(u->port_offset_hook_slot);
576 if (u->save_time_event)
577 u->core->mainloop->time_free(u->save_time_event);
580 pa_database_close(u->database);