4 This file is part of polypaudio.
6 polypaudio 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 polypaudio 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 polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
30 #include <sys/types.h>
35 #include <polyp/xmalloc.h>
37 #include <polypcore/module.h>
38 #include <polypcore/util.h>
39 #include <polypcore/modargs.h>
40 #include <polypcore/log.h>
41 #include <polypcore/core-subscribe.h>
42 #include <polypcore/sink-input.h>
43 #include <polypcore/util.h>
44 #include <polyp/volume.h>
46 #include "module-volume-restore-symdef.h"
48 PA_MODULE_AUTHOR("Lennart Poettering")
49 PA_MODULE_DESCRIPTION("Playback stream automatic volume restore module")
50 PA_MODULE_USAGE("table=<filename>")
51 PA_MODULE_VERSION(PACKAGE_VERSION)
53 #define WHITESPACE "\n\r \t"
55 #define DEFAULT_VOLUME_TABLE_FILE ".polypaudio/volume.table"
57 static const char* const valid_modargs[] = {
69 pa_subscription *subscription;
74 static pa_cvolume* parse_volume(const char *s, pa_cvolume *v) {
86 if (k <= 0 || k > PA_CHANNELS_MAX)
89 v->channels = (unsigned) k;
91 for (i = 0; i < v->channels; i++) {
92 p += strspn(p, WHITESPACE);
99 if (k < PA_VOLUME_MUTED)
102 v->values[i] = (pa_volume_t) k;
111 static int load_rules(struct userdata *u) {
115 char buf_name[256], buf_volume[256];
119 fopen(u->table_file, "r") :
120 pa_open_config_file(NULL, DEFAULT_VOLUME_TABLE_FILE, NULL, &u->table_file, "r");
123 if (errno == ENOENT) {
124 pa_log_info(__FILE__": starting with empty ruleset.");
127 pa_log(__FILE__": failed to open file '%s': %s", u->table_file, strerror(errno));
132 pa_lock_fd(fileno(f), 1);
138 if (!fgets(ln, sizeof(buf_name), f))
145 if (ln[0] == '#' || !*ln )
148 if (ln == buf_name) {
153 assert(ln == buf_volume);
155 if (!parse_volume(buf_volume, &v)) {
156 pa_log(__FILE__": parse failure in %s:%u, stopping parsing", u->table_file, n);
162 if (pa_hashmap_get(u->hashmap, buf_name)) {
163 pa_log(__FILE__": double entry in %s:%u, ignoring", u->table_file, n);
167 rule = pa_xnew(struct rule, 1);
168 rule->name = pa_xstrdup(buf_name);
171 pa_hashmap_put(u->hashmap, rule->name, rule);
174 if (ln == buf_volume) {
175 pa_log(__FILE__": invalid number of lines in %s.", u->table_file);
183 pa_lock_fd(fileno(f), 0);
190 static int save_rules(struct userdata *u) {
197 fopen(u->table_file, "w") :
198 pa_open_config_file(NULL, DEFAULT_VOLUME_TABLE_FILE, NULL, &u->table_file, "w");
201 pa_log(__FILE__": failed to open file '%s': %s", u->table_file, strerror(errno));
205 pa_lock_fd(fileno(f), 1);
207 while ((rule = pa_hashmap_iterate(u->hashmap, &state, NULL))) {
210 fprintf(f, "%s\n%u", rule->name, rule->volume.channels);
212 for (i = 0; i < rule->volume.channels; i++)
213 fprintf(f, " %u", rule->volume.values[i]);
222 pa_lock_fd(fileno(f), 0);
229 static char* client_name(pa_client *c) {
232 if (!c->name || !c->driver)
235 t = pa_sprintf_malloc("%s$%s", c->driver, c->name);
236 t[strcspn(t, "\n\r#")] = 0;
241 if ((e = strrchr(t, '('))) {
242 char *k = e + 1 + strspn(e + 1, "0123456789-");
244 /* Dirty trick: truncate all trailing parens with numbers in
245 * between, since they are usually used to identify multiple
246 * sessions of the same application, which is something we
247 * explicitly don't want. Besides other stuff this makes xmms
248 * with esound work properly for us. */
250 if (*k == ')' && *(k+1) == 0)
257 static void callback(pa_core *c, pa_subscription_event_type_t t, uint32_t idx, void *userdata) {
258 struct userdata *u = userdata;
266 if (t != (PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW) &&
267 t != (PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE))
270 if (!(si = pa_idxset_get_by_index(c->sink_inputs, idx)))
273 if (!si->client || !(name = client_name(si->client)))
276 if ((r = pa_hashmap_get(u->hashmap, name))) {
279 if (((t & PA_SUBSCRIPTION_EVENT_TYPE_MASK) == PA_SUBSCRIPTION_EVENT_NEW) && si->sample_spec.channels == r->volume.channels) {
280 pa_log_info(__FILE__": Restoring volume for <%s>", r->name);
281 pa_sink_input_set_volume(si, &r->volume);
282 } else if (!pa_cvolume_equal(pa_sink_input_get_volume(si), &r->volume)) {
283 pa_log_info(__FILE__": Saving volume for <%s>", r->name);
284 r->volume = *pa_sink_input_get_volume(si);
289 pa_log_info(__FILE__": Creating new entry for <%s>", name);
291 r = pa_xnew(struct rule, 1);
293 r->volume = *pa_sink_input_get_volume(si);
294 pa_hashmap_put(u->hashmap, r->name, r);
300 int pa__init(pa_core *c, pa_module*m) {
301 pa_modargs *ma = NULL;
307 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
308 pa_log(__FILE__": Failed to parse module arguments");
312 u = pa_xnew(struct userdata, 1);
313 u->hashmap = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
314 u->subscription = NULL;
315 u->table_file = pa_xstrdup(pa_modargs_get_value(ma, "table", NULL));
320 if (load_rules(u) < 0)
323 u->subscription = pa_subscription_new(c, PA_SUBSCRIPTION_MASK_SINK_INPUT, callback, u);
337 static void free_func(void *p, void *userdata) {
345 void pa__done(pa_core *c, pa_module*m) {
351 if (!(u = m->userdata))
355 pa_subscription_free(u->subscription);
362 pa_hashmap_free(u->hashmap, free_func, NULL);
365 pa_xfree(u->table_file);