4 This file is part of PulseAudio.
6 Copyright 2004-2006 Lennart Poettering
8 PulseAudio is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published
10 by the Free Software Foundation; either version 2 of the License,
11 or (at your option) any later version.
13 PulseAudio is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with PulseAudio; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
32 #include <sys/types.h>
37 #include <pulse/xmalloc.h>
39 #include <pulsecore/core-error.h>
40 #include <pulsecore/module.h>
41 #include <pulsecore/core-util.h>
42 #include <pulsecore/modargs.h>
43 #include <pulsecore/log.h>
44 #include <pulsecore/core-subscribe.h>
45 #include <pulsecore/sink-input.h>
46 #include <pulsecore/core-util.h>
48 #include "module-match-symdef.h"
50 PA_MODULE_AUTHOR("Lennart Poettering")
51 PA_MODULE_DESCRIPTION("Playback stream expression matching module")
52 PA_MODULE_USAGE("table=<filename>")
53 PA_MODULE_VERSION(PACKAGE_VERSION)
55 #define WHITESPACE "\n\r \t"
57 #define DEFAULT_MATCH_TABLE_FILE PA_DEFAULT_CONFIG_DIR"/match.table"
58 #define DEFAULT_MATCH_TABLE_FILE_USER "match.table"
60 static const char* const valid_modargs[] = {
73 pa_subscription *subscription;
76 static int load_rules(struct userdata *u, const char *filename) {
80 struct rule *end = NULL;
84 fopen(fn = pa_xstrdup(filename), "r") :
85 pa_open_config_file(DEFAULT_MATCH_TABLE_FILE, DEFAULT_MATCH_TABLE_FILE_USER, NULL, &fn, "r");
88 pa_log("failed to open file '%s': %s", fn, pa_cstrerror(errno));
92 pa_lock_fd(fileno(f), 1);
102 if (!fgets(ln, sizeof(ln), f))
109 if (ln[0] == '#' || !*ln )
112 d = ln+strcspn(ln, WHITESPACE);
113 v = d+strspn(d, WHITESPACE);
117 pa_log(__FILE__ ": [%s:%u] failed to parse line - too few words", filename, n);
122 if (pa_atou(v, &k) < 0) {
123 pa_log("[%s:%u] failed to parse volume", filename, n);
127 volume = (pa_volume_t) k;
130 if (regcomp(®ex, ln, REG_EXTENDED|REG_NOSUB) != 0) {
131 pa_log("[%s:%u] invalid regular expression", filename, n);
135 rule = pa_xmalloc(sizeof(struct rule));
137 rule->volume = volume;
153 pa_lock_fd(fileno(f), 0);
163 static void callback(pa_core *c, pa_subscription_event_type_t t, uint32_t idx, void *userdata) {
164 struct userdata *u = userdata;
169 if (t != (PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW))
172 if (!(si = pa_idxset_get_by_index(c->sink_inputs, idx)))
178 for (r = u->rules; r; r = r->next) {
179 if (!regexec(&r->regex, si->name, 0, NULL, 0)) {
181 pa_log_debug("changing volume of sink input '%s' to 0x%03x", si->name, r->volume);
182 pa_cvolume_set(&cv, r->volume, si->sample_spec.channels);
183 pa_sink_input_set_volume(si, &cv);
188 int pa__init(pa_core *c, pa_module*m) {
189 pa_modargs *ma = NULL;
193 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
194 pa_log("Failed to parse module arguments");
198 u = pa_xmalloc(sizeof(struct userdata));
200 u->subscription = NULL;
203 if (load_rules(u, pa_modargs_get_value(ma, "table", NULL)) < 0)
206 u->subscription = pa_subscription_new(c, PA_SUBSCRIPTION_MASK_SINK_INPUT, callback, u);
219 void pa__done(pa_core *c, pa_module*m) {
224 if (!(u = m->userdata))
228 pa_subscription_free(u->subscription);
230 for (r = u->rules; r; r = n) {