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authorPierre Ossman <ossman@cendio.se>2006-02-16 19:19:58 +0000
committerPierre Ossman <ossman@cendio.se>2006-02-16 19:19:58 +0000
commite205b25d65ccb380fa158711e24d55b6de5d9bc1 (patch)
tree470b4ced153c9ff18b8e35deb05c7a95efc838fc /src/modules/module-match.c
parent5b881e62282f26b353635120935d114e0c7c3f3c (diff)
Reorganised the source tree. We now have src/ with a couple of subdirs:
* daemon/ - Contains the files specific to the polypaudio daemon. * modules/ - All loadable modules. * polyp/ - Files that are part of the public, application interface or are only used in libpolyp. * polypcore/ - All other shared files. * tests/ - Test programs. * utils/ - Utility programs. git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@487 fefdeb5f-60dc-0310-8127-8f9354f1896f
Diffstat (limited to 'src/modules/module-match.c')
-rw-r--r--src/modules/module-match.c235
1 files changed, 235 insertions, 0 deletions
diff --git a/src/modules/module-match.c b/src/modules/module-match.c
new file mode 100644
index 00000000..10ceb75e
--- /dev/null
+++ b/src/modules/module-match.c
@@ -0,0 +1,235 @@
+/* $Id$ */
+
+/***
+ This file is part of polypaudio.
+
+ polypaudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2 of the License,
+ or (at your option) any later version.
+
+ polypaudio is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with polypaudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <unistd.h>
+#include <assert.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <polypcore/module.h>
+#include <polypcore/util.h>
+#include <polypcore/modargs.h>
+#include <polypcore/log.h>
+#include <polypcore/subscribe.h>
+#include <polypcore/xmalloc.h>
+#include <polypcore/sink-input.h>
+
+#include "module-match-symdef.h"
+
+PA_MODULE_AUTHOR("Lennart Poettering")
+PA_MODULE_DESCRIPTION("Sink input matching module")
+PA_MODULE_USAGE("table=<filename>")
+PA_MODULE_VERSION(PACKAGE_VERSION)
+
+#define WHITESPACE "\n\r \t"
+
+#ifndef DEFAULT_CONFIG_DIR
+#define DEFAULT_CONFIG_DIR "/etc/polypaudio"
+#endif
+
+#define DEFAULT_MATCH_TABLE_FILE DEFAULT_CONFIG_DIR"/match.table"
+#define DEFAULT_MATCH_TABLE_FILE_USER ".polypaudio/match.table"
+
+static const char* const valid_modargs[] = {
+ "table",
+ NULL,
+};
+
+struct rule {
+ regex_t regex;
+ pa_volume_t volume;
+ struct rule *next;
+};
+
+struct userdata {
+ struct rule *rules;
+ pa_subscription *subscription;
+};
+
+static int load_rules(struct userdata *u, const char *filename) {
+ FILE *f;
+ int n = 0;
+ int ret = -1;
+ struct rule *end = NULL;
+ char *fn = NULL;
+
+ f = filename ?
+ fopen(fn = pa_xstrdup(filename), "r") :
+ pa_open_config_file(DEFAULT_MATCH_TABLE_FILE, DEFAULT_MATCH_TABLE_FILE_USER, NULL, &fn);
+
+ if (!f) {
+ pa_log(__FILE__": failed to open file '%s': %s\n", fn, strerror(errno));
+ goto finish;
+ }
+
+ while (!feof(f)) {
+ char *d, *v;
+ pa_volume_t volume;
+ uint32_t k;
+ regex_t regex;
+ char ln[256];
+ struct rule *rule;
+
+ if (!fgets(ln, sizeof(ln), f))
+ break;
+
+ n++;
+
+ pa_strip_nl(ln);
+
+ if (ln[0] == '#' || !*ln )
+ continue;
+
+ d = ln+strcspn(ln, WHITESPACE);
+ v = d+strspn(d, WHITESPACE);
+
+
+ if (!*v) {
+ pa_log(__FILE__ ": [%s:%u] failed to parse line - too few words\n", filename, n);
+ goto finish;
+ }
+
+ *d = 0;
+ if (pa_atou(v, &k) < 0) {
+ pa_log(__FILE__": [%s:%u] failed to parse volume\n", filename, n);
+ goto finish;
+ }
+
+ volume = (pa_volume_t) k;
+
+
+ if (regcomp(&regex, ln, REG_EXTENDED|REG_NOSUB) != 0) {
+ pa_log(__FILE__": [%s:%u] invalid regular expression\n", filename, n);
+ goto finish;
+ }
+
+ rule = pa_xmalloc(sizeof(struct rule));
+ rule->regex = regex;
+ rule->volume = volume;
+ rule->next = NULL;
+
+ if (end)
+ end->next = rule;
+ else
+ u->rules = rule;
+ end = rule;
+
+ *d = 0;
+ }
+
+ ret = 0;
+
+finish:
+ if (f)
+ fclose(f);
+
+ if (fn)
+ pa_xfree(fn);
+
+ return ret;
+}
+
+static void callback(pa_core *c, pa_subscription_event_type_t t, uint32_t idx, void *userdata) {
+ struct userdata *u = userdata;
+ pa_sink_input *si;
+ struct rule *r;
+ assert(c && u);
+
+ if (t != (PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW))
+ return;
+
+ if (!(si = pa_idxset_get_by_index(c->sink_inputs, idx)))
+ return;
+
+ if (!si->name)
+ return;
+
+ for (r = u->rules; r; r = r->next) {
+ if (!regexec(&r->regex, si->name, 0, NULL, 0)) {
+ pa_cvolume cv;
+ pa_log_debug(__FILE__": changing volume of sink input '%s' to 0x%03x\n", si->name, r->volume);
+ pa_cvolume_set(&cv, r->volume, si->sample_spec.channels);
+ pa_sink_input_set_volume(si, &cv);
+ }
+ }
+}
+
+int pa__init(pa_core *c, pa_module*m) {
+ pa_modargs *ma = NULL;
+ struct userdata *u;
+ assert(c && m);
+
+ if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+ pa_log(__FILE__": Failed to parse module arguments\n");
+ goto fail;
+ }
+
+ u = pa_xmalloc(sizeof(struct userdata));
+ u->rules = NULL;
+ u->subscription = NULL;
+ m->userdata = u;
+
+ if (load_rules(u, pa_modargs_get_value(ma, "table", NULL)) < 0)
+ goto fail;
+
+ u->subscription = pa_subscription_new(c, PA_SUBSCRIPTION_MASK_SINK_INPUT, callback, u);
+
+ pa_modargs_free(ma);
+ return 0;
+
+fail:
+ pa__done(c, m);
+
+ if (ma)
+ pa_modargs_free(ma);
+ return -1;
+}
+
+void pa__done(pa_core *c, pa_module*m) {
+ struct userdata* u;
+ struct rule *r, *n;
+ assert(c && m);
+
+ if (!(u = m->userdata))
+ return;
+
+ if (u->subscription)
+ pa_subscription_free(u->subscription);
+
+ for (r = u->rules; r; r = n) {
+ n = r->next;
+
+ regfree(&r->regex);
+ pa_xfree(r);
+ }
+
+ pa_xfree(u);
+}
+
+