2 This file is part of PulseAudio.
4 Copyright 2004-2006 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>
36 #include <pulsecore/core-error.h>
37 #include <pulsecore/module.h>
38 #include <pulsecore/core-util.h>
39 #include <pulsecore/modargs.h>
40 #include <pulsecore/log.h>
41 #include <pulsecore/core-subscribe.h>
42 #include <pulsecore/sink-input.h>
43 #include <pulsecore/core-util.h>
45 #include "module-match-symdef.h"
47 PA_MODULE_AUTHOR("Lennart Poettering");
48 PA_MODULE_DESCRIPTION("Playback stream expression matching module");
49 PA_MODULE_VERSION(PACKAGE_VERSION);
50 PA_MODULE_LOAD_ONCE(TRUE);
51 PA_MODULE_USAGE("table=<filename> "
52 "key=<property_key>");
54 #define WHITESPACE "\n\r \t"
56 #define DEFAULT_MATCH_TABLE_FILE PA_DEFAULT_CONFIG_DIR"/match.table"
57 #define DEFAULT_MATCH_TABLE_FILE_USER "match.table"
59 static const char* const valid_modargs[] = {
68 pa_proplist *proplist;
75 pa_subscription *subscription;
78 static int load_rules(struct userdata *u, const char *filename) {
82 struct rule *end = NULL;
88 f = fopen(fn = pa_xstrdup(filename), "r");
90 f = pa_open_config_file(DEFAULT_MATCH_TABLE_FILE, DEFAULT_MATCH_TABLE_FILE_USER, NULL, &fn);
94 pa_log("Failed to open file config file: %s", pa_cstrerror(errno));
98 pa_lock_fd(fileno(f), 1);
102 pa_volume_t volume = PA_VOLUME_NORM;
107 pa_proplist *proplist = NULL;
109 if (!fgets(ln, sizeof(ln), f))
116 if (ln[0] == '#' || !*ln )
119 d = ln+strcspn(ln, WHITESPACE);
120 v = d+strspn(d, WHITESPACE);
124 pa_log(__FILE__ ": [%s:%u] failed to parse line - too few words", filename, n);
129 if (pa_atou(v, &k) >= 0) {
130 volume = (pa_volume_t) k;
131 } else if (*v == '"') {
134 e = strchr(v+1, '"');
136 pa_log(__FILE__ ": [%s:%u] failed to parse line - missing role closing quote", filename, n);
141 e = pa_sprintf_malloc("media.role=\"%s\"", v+1);
142 proplist = pa_proplist_from_string(e);
147 e = v+strspn(v, WHITESPACE);
149 pa_log(__FILE__ ": [%s:%u] failed to parse line - missing end of property list", filename, n);
153 proplist = pa_proplist_from_string(v);
156 if (regcomp(®ex, ln, REG_EXTENDED|REG_NOSUB) != 0) {
157 pa_log("[%s:%u] invalid regular expression", filename, n);
161 rule = pa_xnew(struct rule, 1);
163 rule->proplist = proplist;
164 rule->volume = volume;
180 pa_lock_fd(fileno(f), 0);
190 static void callback(pa_core *c, pa_subscription_event_type_t t, uint32_t idx, void *userdata) {
191 struct userdata *u = userdata;
199 if (t != (PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW))
202 if (!(si = pa_idxset_get_by_index(c->sink_inputs, idx)))
205 if (!(n = pa_proplist_gets(si->proplist, u->property_key)))
208 pa_log_debug("Matching with %s", n);
210 for (r = u->rules; r; r = r->next) {
211 if (!regexec(&r->regex, n, 0, NULL, 0)) {
213 pa_log_debug("updating proplist of sink input '%s'", n);
214 pa_proplist_update(si->proplist, PA_UPDATE_MERGE, r->proplist);
217 pa_log_debug("changing volume of sink input '%s' to 0x%03x", n, r->volume);
218 pa_cvolume_set(&cv, si->sample_spec.channels, r->volume);
219 pa_sink_input_set_volume(si, &cv, TRUE, TRUE);
225 int pa__init(pa_module*m) {
226 pa_modargs *ma = NULL;
231 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
232 pa_log("Failed to parse module arguments");
236 u = pa_xnew(struct userdata, 1);
238 u->subscription = NULL;
241 u->property_key = pa_xstrdup(pa_modargs_get_value(ma, "key", PA_PROP_MEDIA_NAME));
243 if (load_rules(u, pa_modargs_get_value(ma, "table", NULL)) < 0)
246 u->subscription = pa_subscription_new(m->core, PA_SUBSCRIPTION_MASK_SINK_INPUT, callback, u);
259 void pa__done(pa_module*m) {
265 if (!(u = m->userdata))
269 pa_subscription_free(u->subscription);
272 pa_xfree(u->property_key);
274 for (r = u->rules; r; r = n) {
279 pa_proplist_free(r->proplist);