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-rw-r--r--src/modules/module-device-manager.c256
1 files changed, 255 insertions, 1 deletions
diff --git a/src/modules/module-device-manager.c b/src/modules/module-device-manager.c
index 96d4a668..b41f71c7 100644
--- a/src/modules/module-device-manager.c
+++ b/src/modules/module-device-manager.c
@@ -47,6 +47,9 @@
#include <pulsecore/sink-input.h>
#include <pulsecore/source-output.h>
#include <pulsecore/namereg.h>
+#include <pulsecore/protocol-native.h>
+#include <pulsecore/pstream.h>
+#include <pulsecore/pstream-util.h>
#include <pulsecore/database.h>
#include "module-device-manager-symdef.h"
@@ -69,9 +72,13 @@ struct userdata {
pa_subscription *subscription;
pa_hook_slot
*sink_new_hook_slot,
- *source_new_hook_slot;
+ *source_new_hook_slot,
+ *connection_unlink_hook_slot;
pa_time_event *save_time_event;
pa_database *database;
+
+ pa_native_protocol *protocol;
+ pa_idxset *subscribed;
};
#define ENTRY_VERSION 1
@@ -81,6 +88,15 @@ struct entry {
char description[PA_NAME_MAX];
} PA_GCC_PACKED;
+enum {
+ SUBCOMMAND_TEST,
+ SUBCOMMAND_READ,
+ SUBCOMMAND_WRITE,
+ SUBCOMMAND_DELETE,
+ SUBCOMMAND_SUBSCRIBE,
+ SUBCOMMAND_EVENT
+};
+
static void save_time_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *t, void *userdata) {
struct userdata *u = userdata;
@@ -272,6 +288,230 @@ static pa_hook_result_t source_new_hook_callback(pa_core *c, pa_source_new_data
return PA_HOOK_OK;
}
+static char *get_name(const char *key, const char *prefix) {
+ char *t;
+
+ if (strncmp(key, prefix, sizeof(prefix)))
+ return NULL;
+
+ t = pa_xstrdup(key + sizeof(prefix));
+ return t;
+}
+
+static void apply_entry(struct userdata *u, const char *name, struct entry *e) {
+ pa_sink *sink;
+ pa_source *source;
+ uint32_t idx;
+
+ pa_assert(u);
+ pa_assert(name);
+ pa_assert(e);
+
+ for (sink = pa_idxset_first(u->core->sinks, &idx); sink; sink = pa_idxset_next(u->core->sinks, &idx)) {
+ char *n;
+
+ if (!(n = get_name(name, "sink")))
+ continue;
+
+ if (!pa_streq(sink->name, n)) {
+ pa_xfree(n);
+ continue;
+ }
+ pa_xfree(n);
+
+ pa_log_info("Restoring description for sink %s.", sink->name);
+ pa_proplist_sets(sink->proplist, PA_PROP_DEVICE_DESCRIPTION, e->description);
+ }
+
+ for (source = pa_idxset_first(u->core->sources, &idx); source; source = pa_idxset_next(u->core->sources, &idx)) {
+ char *n;
+
+ if (!(n = get_name(name, "source")))
+ continue;
+
+ if (!pa_streq(source->name, n)) {
+ pa_xfree(n);
+ continue;
+ }
+ pa_xfree(n);
+
+ pa_log_info("Restoring description for source %s.", source->name);
+ pa_proplist_sets(source->proplist, PA_PROP_DEVICE_DESCRIPTION, e->description);
+ }
+}
+
+#define EXT_VERSION 1
+
+static int extension_cb(pa_native_protocol *p, pa_module *m, pa_native_connection *c, uint32_t tag, pa_tagstruct *t) {
+ struct userdata *u;
+ uint32_t command;
+ pa_tagstruct *reply = NULL;
+
+ pa_assert(p);
+ pa_assert(m);
+ pa_assert(c);
+ pa_assert(t);
+
+ u = m->userdata;
+
+ if (pa_tagstruct_getu32(t, &command) < 0)
+ goto fail;
+
+ reply = pa_tagstruct_new(NULL, 0);
+ pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
+ pa_tagstruct_putu32(reply, tag);
+
+ switch (command) {
+ case SUBCOMMAND_TEST: {
+ if (!pa_tagstruct_eof(t))
+ goto fail;
+
+ pa_tagstruct_putu32(reply, EXT_VERSION);
+ break;
+ }
+
+ case SUBCOMMAND_READ: {
+ pa_datum key;
+ pa_bool_t done;
+
+ if (!pa_tagstruct_eof(t))
+ goto fail;
+
+ done = !pa_database_first(u->database, &key, NULL);
+
+ while (!done) {
+ pa_datum next_key;
+ struct entry *e;
+ char *name;
+
+ done = !pa_database_next(u->database, &key, &next_key, NULL);
+
+ name = pa_xstrndup(key.data, key.size);
+ pa_datum_free(&key);
+
+ if ((e = read_entry(u, name))) {
+ pa_tagstruct_puts(reply, name);
+ pa_tagstruct_puts(reply, e->description);
+
+ pa_xfree(e);
+ }
+
+ pa_xfree(name);
+
+ key = next_key;
+ }
+
+ break;
+ }
+
+ case SUBCOMMAND_WRITE: {
+ uint32_t mode;
+ pa_bool_t apply_immediately = FALSE;
+
+ if (pa_tagstruct_getu32(t, &mode) < 0 ||
+ pa_tagstruct_get_boolean(t, &apply_immediately) < 0)
+ goto fail;
+
+ if (mode != PA_UPDATE_MERGE &&
+ mode != PA_UPDATE_REPLACE &&
+ mode != PA_UPDATE_SET)
+ goto fail;
+
+ if (mode == PA_UPDATE_SET)
+ pa_database_clear(u->database);
+
+ while (!pa_tagstruct_eof(t)) {
+ const char *name, *description;
+ struct entry entry;
+ pa_datum key, data;
+
+ pa_zero(entry);
+ entry.version = ENTRY_VERSION;
+
+ if (pa_tagstruct_gets(t, &name) < 0 ||
+ pa_tagstruct_gets(reply, &description) < 0)
+ goto fail;
+
+ if (!name || !*name)
+ goto fail;
+
+ pa_strlcpy(entry.description, description, sizeof(entry.description));
+
+ key.data = (char*) name;
+ key.size = strlen(name);
+
+ data.data = &entry;
+ data.size = sizeof(entry);
+
+ if (pa_database_set(u->database, &key, &data, mode == PA_UPDATE_REPLACE) == 0)
+ if (apply_immediately)
+ apply_entry(u, name, &entry);
+ }
+
+ trigger_save(u);
+
+ break;
+ }
+
+ case SUBCOMMAND_DELETE:
+
+ while (!pa_tagstruct_eof(t)) {
+ const char *name;
+ pa_datum key;
+
+ if (pa_tagstruct_gets(t, &name) < 0)
+ goto fail;
+
+ key.data = (char*) name;
+ key.size = strlen(name);
+
+ pa_database_unset(u->database, &key);
+ }
+
+ trigger_save(u);
+
+ break;
+
+ case SUBCOMMAND_SUBSCRIBE: {
+
+ pa_bool_t enabled;
+
+ if (pa_tagstruct_get_boolean(t, &enabled) < 0 ||
+ !pa_tagstruct_eof(t))
+ goto fail;
+
+ if (enabled)
+ pa_idxset_put(u->subscribed, c, NULL);
+ else
+ pa_idxset_remove_by_data(u->subscribed, c, NULL);
+
+ break;
+ }
+
+ default:
+ goto fail;
+ }
+
+ pa_pstream_send_tagstruct(pa_native_connection_get_pstream(c), reply);
+ return 0;
+
+ fail:
+
+ if (reply)
+ pa_tagstruct_free(reply);
+
+ return -1;
+}
+
+static pa_hook_result_t connection_unlink_hook_cb(pa_native_protocol *p, pa_native_connection *c, struct userdata *u) {
+ pa_assert(p);
+ pa_assert(c);
+ pa_assert(u);
+
+ pa_idxset_remove_by_data(u->subscribed, c, NULL);
+ return PA_HOOK_OK;
+}
+
int pa__init(pa_module*m) {
pa_modargs *ma = NULL;
struct userdata *u;
@@ -290,6 +530,12 @@ int pa__init(pa_module*m) {
m->userdata = u = pa_xnew0(struct userdata, 1);
u->core = m->core;
u->module = m;
+ u->subscribed = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
+
+ u->protocol = pa_native_protocol_get(m->core);
+ pa_native_protocol_install_ext(u->protocol, m, extension_cb);
+
+ u->connection_unlink_hook_slot = pa_hook_connect(&pa_native_protocol_hooks(u->protocol)[PA_NATIVE_HOOK_CONNECTION_UNLINK], PA_HOOK_NORMAL, (pa_hook_cb_t) connection_unlink_hook_cb, u);
u->subscription = pa_subscription_new(m->core, PA_SUBSCRIPTION_MASK_SINK|PA_SUBSCRIPTION_MASK_SOURCE, subscribe_callback, u);
@@ -348,5 +594,13 @@ void pa__done(pa_module*m) {
if (u->database)
pa_database_close(u->database);
+ if (u->protocol) {
+ pa_native_protocol_remove_ext(u->protocol, m);
+ pa_native_protocol_unref(u->protocol);
+ }
+
+ if (u->subscribed)
+ pa_idxset_free(u->subscribed, NULL, NULL);
+
pa_xfree(u);
}