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>
33 #if defined(HAVE_REGEX_H)
35 #elif defined(HAVE_PCREPOSIX_H)
36 #include <pcreposix.h>
39 #include <pulse/xmalloc.h>
41 #include <pulsecore/core-error.h>
42 #include <pulsecore/module.h>
43 #include <pulsecore/core-util.h>
44 #include <pulsecore/modargs.h>
45 #include <pulsecore/log.h>
46 #include <pulsecore/sink-input.h>
47 #include <pulsecore/core-util.h>
49 #include "module-match-symdef.h"
51 PA_MODULE_AUTHOR("Lennart Poettering");
52 PA_MODULE_DESCRIPTION("Playback stream expression matching module");
53 PA_MODULE_VERSION(PACKAGE_VERSION);
54 PA_MODULE_LOAD_ONCE(TRUE);
55 PA_MODULE_USAGE("table=<filename> "
56 "key=<property_key>");
58 #define WHITESPACE "\n\r \t"
60 #define DEFAULT_MATCH_TABLE_FILE PA_DEFAULT_CONFIG_DIR"/match.table"
61 #define DEFAULT_MATCH_TABLE_FILE_USER "match.table"
63 #define UPDATE_REPLACE "replace"
64 #define UPDATE_MERGE "merge"
66 static const char* const valid_modargs[] = {
75 pa_proplist *proplist;
76 pa_update_mode_t mode;
83 pa_hook_slot *sink_input_fixate_hook_slot;
86 static int load_rules(struct userdata *u, const char *filename) {
90 struct rule *end = NULL;
96 f = pa_fopen_cloexec(fn = pa_xstrdup(filename), "r");
98 f = pa_open_config_file(DEFAULT_MATCH_TABLE_FILE, DEFAULT_MATCH_TABLE_FILE_USER, NULL, &fn);
101 pa_log("Failed to open file config file: %s", pa_cstrerror(errno));
105 pa_lock_fd(fileno(f), 1);
108 char *token_end, *value_str;
109 pa_volume_t volume = PA_VOLUME_NORM;
114 pa_proplist *proplist = NULL;
115 pa_update_mode_t mode = (pa_update_mode_t) -1;
117 if (!fgets(ln, sizeof(ln), f))
124 if (ln[0] == '#' || !*ln )
127 token_end = ln + strcspn(ln, WHITESPACE);
128 value_str = token_end + strspn(token_end, WHITESPACE);
132 pa_log("[%s:%u] failed to parse line - missing regexp", fn, n);
137 pa_log("[%s:%u] failed to parse line - too few words", fn, n);
141 if (pa_atou(value_str, &k) >= 0)
142 volume = (pa_volume_t) PA_CLAMP_VOLUME(k);
146 token_end = value_str + strcspn(value_str, WHITESPACE);
148 len = token_end - value_str;
149 if (len == (sizeof(UPDATE_REPLACE) - 1) && !strncmp(value_str, UPDATE_REPLACE, len))
150 mode = PA_UPDATE_REPLACE;
151 else if (len == (sizeof(UPDATE_MERGE) - 1) && !strncmp(value_str, UPDATE_MERGE, len))
152 mode = PA_UPDATE_MERGE;
154 if (mode != (pa_update_mode_t) -1) {
155 value_str = token_end + strspn(token_end, WHITESPACE);
158 pa_log("[%s:%u] failed to parse line - too few words", fn, n);
162 mode = PA_UPDATE_MERGE;
164 if (*value_str == '"') {
167 token_end = strchr(value_str, '"');
169 pa_log("[%s:%u] failed to parse line - missing role closing quote", fn, n);
173 token_end = value_str + strcspn(value_str, WHITESPACE);
177 value_str = pa_sprintf_malloc("media.role=\"%s\"", value_str);
178 proplist = pa_proplist_from_string(value_str);
182 if (regcomp(®ex, ln, REG_EXTENDED|REG_NOSUB) != 0) {
183 pa_log("[%s:%u] invalid regular expression", fn, n);
185 pa_proplist_free(proplist);
189 rule = pa_xnew(struct rule, 1);
191 rule->proplist = proplist;
193 rule->volume = volume;
207 pa_lock_fd(fileno(f), 0);
216 static pa_hook_result_t sink_input_fixate_hook_callback(pa_core *c, pa_sink_input_new_data *si, struct userdata *u) {
223 if (!(n = pa_proplist_gets(si->proplist, u->property_key)))
226 pa_log_debug("Matching with %s", n);
228 for (r = u->rules; r; r = r->next) {
229 if (!regexec(&r->regex, n, 0, NULL, 0)) {
231 pa_log_debug("updating proplist of sink input '%s'", n);
232 pa_proplist_update(si->proplist, r->mode, r->proplist);
233 } else if (si->volume_writable) {
235 pa_log_debug("changing volume of sink input '%s' to 0x%03x", n, r->volume);
236 pa_cvolume_set(&cv, si->sample_spec.channels, r->volume);
237 pa_sink_input_new_data_set_volume(si, &cv);
239 pa_log_debug("the volume of sink input '%s' is not writable, can't change it", n);
246 int pa__init(pa_module*m) {
247 pa_modargs *ma = NULL;
252 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
253 pa_log("Failed to parse module arguments");
257 u = pa_xnew0(struct userdata, 1);
261 u->property_key = pa_xstrdup(pa_modargs_get_value(ma, "key", PA_PROP_MEDIA_NAME));
263 if (load_rules(u, pa_modargs_get_value(ma, "table", NULL)) < 0)
266 /* hook EARLY - 1, to match before stream-restore */
267 u->sink_input_fixate_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_FIXATE], PA_HOOK_EARLY - 1, (pa_hook_cb_t) sink_input_fixate_hook_callback, u);
280 void pa__done(pa_module*m) {
286 if (!(u = m->userdata))
289 if (u->sink_input_fixate_hook_slot)
290 pa_hook_slot_free(u->sink_input_fixate_hook_slot);
293 pa_xfree(u->property_key);
295 for (r = u->rules; r; r = n) {
300 pa_proplist_free(r->proplist);