Adding upstream version 14.2.upstream/14.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 383 insertions, 0 deletions

diff --git a/src/modules/module-augment-properties.c b/src/modules/module-augment-properties.c
new file mode 100644
index 0000000..1fa1b2b
--- /dev/null
+++ b/src/modules/module-augment-properties.c
@@ -0,0 +1,383 @@
+/***
+  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 2.1 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, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <sys/stat.h>
+#include <dirent.h>
+#include <time.h>
+
+#include <pulse/xmalloc.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>
+
+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;
+    bool good;
+    time_t mtime;
+    char *process_name;
+    char *application_name;
+    char *icon_name;
+    char *role;
+    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);
+    pa_xfree(r->role);
+    if (r->proplist)
+        pa_proplist_free(r->proplist);
+    pa_xfree(r);
+}
+
+static int parse_properties(pa_config_parser_state *state) {
+    struct rule *r;
+    pa_proplist *n;
+
+    pa_assert(state);
+
+    r = state->userdata;
+
+    if (!(n = pa_proplist_from_string(state->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 parse_categories(pa_config_parser_state *state) {
+    struct rule *r;
+    const char *split_state = NULL;
+    char *c;
+
+    pa_assert(state);
+
+    r = state->userdata;
+
+    while ((c = pa_split(state->rvalue, ";", &split_state))) {
+
+        if (pa_streq(c, "Game")) {
+            pa_xfree(r->role);
+            r->role = pa_xstrdup("game");
+        } else if (pa_streq(c, "Telephony")) {
+            pa_xfree(r->role);
+            r->role = pa_xstrdup("phone");
+        }
+
+        pa_xfree(c);
+    }
+
+    return 0;
+}
+
+static int check_type(pa_config_parser_state *state) {
+    pa_assert(state);
+
+    return pa_streq(state->rvalue, "Application") ? 0 : -1;
+}
+
+static int catch_all(pa_config_parser_state *state) {
+    return 0;
+}
+
+static char * find_desktop_file_in_dir(struct rule *r, const char *desktop_file_dir, struct stat *st) {
+    char *fn = NULL;
+
+    pa_assert(st);
+
+    fn = pa_sprintf_malloc("%s" PA_PATH_SEP "%s.desktop", desktop_file_dir, r->process_name);
+    if (stat(fn, st) == 0)
+        return fn;
+
+    pa_xfree(fn);
+
+#ifdef DT_DIR
+    {
+        DIR *desktopfiles_dir;
+        struct dirent *dir;
+
+        /* Let's try a more aggressive search, but only one level */
+        if ((desktopfiles_dir = opendir(desktop_file_dir))) {
+            while ((dir = readdir(desktopfiles_dir))) {
+                if (dir->d_type != DT_DIR
+                    || pa_streq(dir->d_name, ".")
+                    || pa_streq(dir->d_name, ".."))
+                    continue;
+
+                fn = pa_sprintf_malloc("%s" PA_PATH_SEP "%s" PA_PATH_SEP "%s.desktop", desktop_file_dir, dir->d_name, r->process_name);
+
+                if (stat(fn, st) == 0) {
+                    closedir(desktopfiles_dir);
+                    return fn;
+                }
+
+                pa_xfree(fn);
+            }
+            closedir(desktopfiles_dir);
+        }
+    }
+#endif
+
+    return NULL;
+}
+
+static void update_rule(struct rule *r) {
+    char *fn = NULL;
+    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" },
+        { "Categories", parse_categories,              NULL, "Desktop Entry" },
+        { NULL,  catch_all, NULL, NULL },
+        { NULL, NULL, NULL, NULL },
+    };
+    const char *state = NULL;
+    const char *xdg_data_dirs = NULL;
+    char *data_dir = NULL;
+    char *desktop_file_dir = NULL;
+
+    pa_assert(r);
+
+    if ((xdg_data_dirs = getenv("XDG_DATA_DIRS"))) {
+        while ((data_dir = pa_split(xdg_data_dirs, ":", &state))) {
+            desktop_file_dir = pa_sprintf_malloc("%s" PA_PATH_SEP "applications", data_dir);
+
+            pa_xfree(fn);
+            fn = find_desktop_file_in_dir(r, desktop_file_dir, &st);
+
+            pa_xfree(desktop_file_dir);
+            pa_xfree(data_dir);
+
+            if (fn) {
+                break;
+            }
+        }
+    } else {
+        fn = find_desktop_file_in_dir(r, DESKTOPFILEDIR, &st);
+    }
+
+    if (!fn) {
+        r->good = false;
+        return;
+    }
+
+    if (r->good) {
+        if (st.st_mtime == r->mtime) {
+            /* Theoretically the filename could have changed, but if so
+               having the same mtime is very unlikely so not worth tracking it in r */
+            pa_xfree(fn);
+            return;
+        }
+        pa_log_debug("Found %s (which has been updated since we last checked).", fn);
+    } else
+        pa_log_debug("Found %s.", fn);
+
+    r->good = true;
+    r->mtime = st.st_mtime;
+    pa_xfree(r->application_name);
+    pa_xfree(r->icon_name);
+    pa_xfree(r->role);
+    r->application_name = r->icon_name = r->role = 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, NULL, false, 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->proplist)
+        pa_proplist_update(p, PA_UPDATE_MERGE, r->proplist);
+
+    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->role)
+        if (!pa_proplist_contains(p, PA_PROP_MEDIA_ROLE))
+            pa_proplist_sets(p, PA_PROP_MEDIA_ROLE, r->role);
+}
+
+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);
+
+    pa_log_debug("Looking for .desktop file for %s", pn);
+
+    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_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL, (pa_free_cb_t) rule_free);
+    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)
+        pa_hashmap_free(u->cache);
+
+    pa_xfree(u);
+}