--- /dev/null
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2009 Lennart Poettering
+
+ PulseAudio 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.
+
+ PulseAudio 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 PulseAudio; 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 <sys/stat.h>
+
+#include <pulse/xmalloc.h>
+#include <pulse/volume.h>
+#include <pulse/channelmap.h>
+
+#include <pulsecore/core-error.h>
+#include <pulsecore/module.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/modargs.h>
+#include <pulsecore/log.h>
+#include <pulsecore/client.h>
+#include <pulsecore/conf-parser.h>
+
+#include "module-augment-properties-symdef.h"
+
+PA_MODULE_AUTHOR("Lennart Poettering");
+PA_MODULE_DESCRIPTION("Augment the property sets of streams with additional static information");
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(TRUE);
+
+#define STAT_INTERVAL 30
+#define MAX_CACHE_SIZE 50
+
+static const char* const valid_modargs[] = {
+ NULL
+};
+
+struct rule {
+ time_t timestamp;
+ pa_bool_t good;
+ time_t mtime;
+ char *process_name;
+ char *application_name;
+ char *icon_name;
+ pa_proplist *proplist;
+};
+
+struct userdata {
+ pa_hashmap *cache;
+ pa_hook_slot *client_new_slot, *client_proplist_changed_slot;
+};
+
+static void rule_free(struct rule *r) {
+ pa_assert(r);
+
+ pa_xfree(r->process_name);
+ pa_xfree(r->application_name);
+ pa_xfree(r->icon_name);
+ if (r->proplist)
+ pa_proplist_free(r->proplist);
+ pa_xfree(r);
+}
+
+static int parse_properties(const char *filename, unsigned line, const char *section, const char *lvalue, const char *rvalue, void *data, void *userdata) {
+ struct rule *r = userdata;
+ pa_proplist *n;
+
+ if (!(n = pa_proplist_from_string(rvalue)))
+ return -1;
+
+ if (r->proplist) {
+ pa_proplist_update(r->proplist, PA_UPDATE_MERGE, n);
+ pa_proplist_free(n);
+ } else
+ r->proplist = n;
+
+ return 0;
+}
+
+static int check_type(const char *filename, unsigned line, const char *section, const char *lvalue, const char *rvalue, void *data, void *userdata) {
+ return pa_streq(rvalue, "Application") ? 0 : -1;
+}
+
+static int catch_all(const char *filename, unsigned line, const char *section, const char *lvalue, const char *rvalue, void *data, void *userdata) {
+ return 0;
+}
+
+static void update_rule(struct rule *r) {
+ char *fn;
+ struct stat st;
+ static pa_config_item table[] = {
+ { "Name", pa_config_parse_string, NULL, "Desktop Entry" },
+ { "Icon", pa_config_parse_string, NULL, "Desktop Entry" },
+ { "Type", check_type, NULL, "Desktop Entry" },
+ { "X-PulseAudio-Properties", parse_properties, NULL, "Desktop Entry" },
+ { NULL, catch_all, NULL, NULL },
+ { NULL, NULL, NULL, NULL },
+ };
+
+ pa_assert(r);
+ fn = pa_sprintf_malloc(DESKTOPFILEDIR PA_PATH_SEP "%s.desktop", r->process_name);
+
+ if (stat(fn, &st) < 0) {
+ r->good = FALSE;
+ pa_xfree(fn);
+ return;
+ }
+
+ if (r->good && st.st_mtime == r->mtime) {
+ pa_xfree(fn);
+ return;
+ }
+
+ r->good = TRUE;
+ r->mtime = st.st_mtime;
+ pa_xfree(r->application_name);
+ pa_xfree(r->icon_name);
+ r->application_name = r->icon_name = NULL;
+ if (r->proplist)
+ pa_proplist_clear(r->proplist);
+
+ table[0].data = &r->application_name;
+ table[1].data = &r->icon_name;
+
+ if (pa_config_parse(fn, NULL, table, r) < 0)
+ pa_log_warn("Failed to parse .desktop file %s.", fn);
+
+ pa_xfree(fn);
+}
+
+static void apply_rule(struct rule *r, pa_proplist *p) {
+ pa_assert(r);
+ pa_assert(p);
+
+ if (!r->good)
+ return;
+
+ if (r->icon_name)
+ if (!pa_proplist_contains(p, PA_PROP_APPLICATION_ICON_NAME))
+ pa_proplist_sets(p, PA_PROP_APPLICATION_ICON_NAME, r->icon_name);
+
+ if (r->application_name) {
+ const char *t;
+
+ t = pa_proplist_gets(p, PA_PROP_APPLICATION_NAME);
+
+ if (!t || pa_streq(t, r->process_name))
+ pa_proplist_sets(p, PA_PROP_APPLICATION_NAME, r->application_name);
+ }
+
+ if (r->proplist)
+ pa_proplist_update(p, PA_UPDATE_MERGE, r->proplist);
+}
+
+static void make_room(pa_hashmap *cache) {
+ pa_assert(cache);
+
+ while (pa_hashmap_size(cache) >= MAX_CACHE_SIZE) {
+ struct rule *r;
+
+ pa_assert_se(r = pa_hashmap_steal_first(cache));
+ rule_free(r);
+ }
+}
+
+static pa_hook_result_t process(struct userdata *u, pa_proplist *p) {
+ struct rule *r;
+ time_t now;
+ const char *pn;
+
+ pa_assert(u);
+ pa_assert(p);
+
+ if (!(pn = pa_proplist_gets(p, PA_PROP_APPLICATION_PROCESS_BINARY)))
+ return PA_HOOK_OK;
+
+ if (*pn == '.' || strchr(pn, '/'))
+ return PA_HOOK_OK;
+
+ time(&now);
+
+ if ((r = pa_hashmap_get(u->cache, pn))) {
+ if (now-r->timestamp > STAT_INTERVAL) {
+ r->timestamp = now;
+ update_rule(r);
+ }
+ } else {
+ make_room(u->cache);
+
+ r = pa_xnew0(struct rule, 1);
+ r->process_name = pa_xstrdup(pn);
+ r->timestamp = now;
+ pa_hashmap_put(u->cache, r->process_name, r);
+ update_rule(r);
+ }
+
+ apply_rule(r, p);
+ return PA_HOOK_OK;
+}
+
+static pa_hook_result_t client_new_cb(pa_core *core, pa_client_new_data *data, struct userdata *u) {
+ pa_core_assert_ref(core);
+ pa_assert(data);
+ pa_assert(u);
+
+ return process(u, data->proplist);
+}
+
+static pa_hook_result_t client_proplist_changed_cb(pa_core *core, pa_client *client, struct userdata *u) {
+ pa_core_assert_ref(core);
+ pa_assert(client);
+ pa_assert(u);
+
+ return process(u, client->proplist);
+}
+
+int pa__init(pa_module*m) {
+ pa_modargs *ma = NULL;
+ struct userdata *u;
+
+ pa_assert(m);
+
+ if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+ pa_log("Failed to parse module arguments");
+ goto fail;
+ }
+
+ m->userdata = u = pa_xnew(struct userdata, 1);
+
+ u->cache = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
+ u->client_new_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_CLIENT_NEW], PA_HOOK_EARLY, (pa_hook_cb_t) client_new_cb, u);
+ u->client_proplist_changed_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_CLIENT_PROPLIST_CHANGED], PA_HOOK_EARLY, (pa_hook_cb_t) client_proplist_changed_cb, u);
+
+ pa_modargs_free(ma);
+
+ return 0;
+
+fail:
+ pa__done(m);
+
+ if (ma)
+ pa_modargs_free(ma);
+
+ return -1;
+}
+
+void pa__done(pa_module*m) {
+ struct userdata* u;
+
+ pa_assert(m);
+
+ if (!(u = m->userdata))
+ return;
+
+ if (u->client_new_slot)
+ pa_hook_slot_free(u->client_new_slot);
+ if (u->client_proplist_changed_slot)
+ pa_hook_slot_free(u->client_proplist_changed_slot);
+
+ if (u->cache) {
+ struct rule *r;
+
+ while ((r = pa_hashmap_steal_first(u->cache)))
+ rule_free(r);
+
+ pa_hashmap_free(u->cache, NULL, NULL);
+ }
+
+ pa_xfree(u);
+}