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-rw-r--r--src/pulsecore/autoload.c182
1 files changed, 182 insertions, 0 deletions
diff --git a/src/pulsecore/autoload.c b/src/pulsecore/autoload.c
new file mode 100644
index 00000000..f6869097
--- /dev/null
+++ b/src/pulsecore/autoload.c
@@ -0,0 +1,182 @@
+/* $Id$ */
+
+/***
+ This file is part of PulseAudio.
+
+ 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 <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/module.h>
+#include <pulsecore/memchunk.h>
+#include <pulsecore/sound-file.h>
+#include <pulsecore/log.h>
+#include <pulsecore/core-scache.h>
+#include <pulsecore/core-subscribe.h>
+
+#include "autoload.h"
+
+static void entry_free(pa_autoload_entry *e) {
+ assert(e);
+ pa_subscription_post(e->core, PA_SUBSCRIPTION_EVENT_AUTOLOAD|PA_SUBSCRIPTION_EVENT_REMOVE, PA_INVALID_INDEX);
+ pa_xfree(e->name);
+ pa_xfree(e->module);
+ pa_xfree(e->argument);
+ pa_xfree(e);
+}
+
+static void entry_remove_and_free(pa_autoload_entry *e) {
+ assert(e && e->core);
+
+ pa_idxset_remove_by_data(e->core->autoload_idxset, e, NULL);
+ pa_hashmap_remove(e->core->autoload_hashmap, e->name);
+ entry_free(e);
+}
+
+static pa_autoload_entry* entry_new(pa_core *c, const char *name) {
+ pa_autoload_entry *e = NULL;
+ assert(c && name);
+
+ if (c->autoload_hashmap && (e = pa_hashmap_get(c->autoload_hashmap, name)))
+ return NULL;
+
+ e = pa_xmalloc(sizeof(pa_autoload_entry));
+ e->core = c;
+ e->name = pa_xstrdup(name);
+ e->module = e->argument = NULL;
+ e->in_action = 0;
+
+ if (!c->autoload_hashmap)
+ c->autoload_hashmap = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
+ assert(c->autoload_hashmap);
+
+ pa_hashmap_put(c->autoload_hashmap, e->name, e);
+
+ if (!c->autoload_idxset)
+ c->autoload_idxset = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
+ pa_idxset_put(c->autoload_idxset, e, &e->index);
+
+ pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_AUTOLOAD|PA_SUBSCRIPTION_EVENT_NEW, e->index);
+
+ return e;
+}
+
+int pa_autoload_add(pa_core *c, const char*name, pa_namereg_type_t type, const char*module, const char *argument, uint32_t *idx) {
+ pa_autoload_entry *e = NULL;
+ assert(c && name && module && (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE));
+
+ if (!(e = entry_new(c, name)))
+ return -1;
+
+ e->module = pa_xstrdup(module);
+ e->argument = pa_xstrdup(argument);
+ e->type = type;
+
+ if (idx)
+ *idx = e->index;
+
+ return 0;
+}
+
+int pa_autoload_remove_by_name(pa_core *c, const char*name, pa_namereg_type_t type) {
+ pa_autoload_entry *e;
+ assert(c && name && type);
+
+ if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)) || e->type != type)
+ return -1;
+
+ entry_remove_and_free(e);
+ return 0;
+}
+
+int pa_autoload_remove_by_index(pa_core *c, uint32_t idx) {
+ pa_autoload_entry *e;
+ assert(c && idx != PA_IDXSET_INVALID);
+
+ if (!c->autoload_idxset || !(e = pa_idxset_get_by_index(c->autoload_idxset, idx)))
+ return -1;
+
+ entry_remove_and_free(e);
+ return 0;
+}
+
+void pa_autoload_request(pa_core *c, const char *name, pa_namereg_type_t type) {
+ pa_autoload_entry *e;
+ pa_module *m;
+ assert(c && name);
+
+ if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)) || (e->type != type))
+ return;
+
+ if (e->in_action)
+ return;
+
+ e->in_action = 1;
+
+ if (type == PA_NAMEREG_SINK || type == PA_NAMEREG_SOURCE) {
+ if ((m = pa_module_load(c, e->module, e->argument)))
+ m->auto_unload = 1;
+ }
+
+ e->in_action = 0;
+}
+
+static void free_func(void *p, PA_GCC_UNUSED void *userdata) {
+ pa_autoload_entry *e = p;
+ pa_idxset_remove_by_data(e->core->autoload_idxset, e, NULL);
+ entry_free(e);
+}
+
+void pa_autoload_free(pa_core *c) {
+ if (c->autoload_hashmap) {
+ pa_hashmap_free(c->autoload_hashmap, free_func, NULL);
+ c->autoload_hashmap = NULL;
+ }
+
+ if (c->autoload_idxset) {
+ pa_idxset_free(c->autoload_idxset, NULL, NULL);
+ c->autoload_idxset = NULL;
+ }
+}
+
+const pa_autoload_entry* pa_autoload_get_by_name(pa_core *c, const char*name, pa_namereg_type_t type) {
+ pa_autoload_entry *e;
+ assert(c && name);
+
+ if (!c->autoload_hashmap || !(e = pa_hashmap_get(c->autoload_hashmap, name)) || e->type != type)
+ return NULL;
+
+ return e;
+}
+
+const pa_autoload_entry* pa_autoload_get_by_index(pa_core *c, uint32_t idx) {
+ pa_autoload_entry *e;
+ assert(c && idx != PA_IDXSET_INVALID);
+
+ if (!c->autoload_idxset || !(e = pa_idxset_get_by_index(c->autoload_idxset, idx)))
+ return NULL;
+
+ return e;
+}