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-rw-r--r--src/modules/hal-util.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/src/modules/hal-util.c b/src/modules/hal-util.c
new file mode 100644
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--- /dev/null
+++ b/src/modules/hal-util.c
@@ -0,0 +1,127 @@
+/***
+ 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 <pulsecore/log.h>
+
+#include <hal/libhal.h>
+
+#include "dbus-util.h"
+#include "hal-util.h"
+
+int pa_hal_get_info(pa_core *core, pa_proplist *p, int card) {
+ pa_dbus_connection *c = NULL;
+ LibHalContext *hal = NULL;
+ DBusError error;
+ int r = -1;
+ char **udis = NULL, *t;
+ int n, i;
+
+ pa_assert(core);
+ pa_assert(p);
+ pa_assert(card >= 0);
+
+ dbus_error_init(&error);
+
+ if (!(c = pa_dbus_bus_get(core, DBUS_BUS_SYSTEM, &error)) || dbus_error_is_set(&error)) {
+ pa_log_error("Unable to contact DBUS system bus: %s: %s", error.name, error.message);
+ goto finish;
+ }
+
+
+ if (!(hal = libhal_ctx_new())) {
+ pa_log_error("libhal_ctx_new() finished");
+ goto finish;
+ }
+
+ if (!libhal_ctx_set_dbus_connection(hal, pa_dbus_connection_get(c))) {
+ pa_log_error("Error establishing DBUS connection: %s: %s", error.name, error.message);
+ goto finish;
+ }
+
+ if (!libhal_ctx_init(hal, &error)) {
+ pa_log_error("Couldn't connect to hald: %s: %s", error.name, error.message);
+ goto finish;
+ }
+
+ if (!(udis = libhal_find_device_by_capability(hal, "sound", &n, &error)) < 0) {
+ pa_log_error("Couldn't find devices: %s: %s", error.name, error.message);
+ goto finish;
+ }
+
+ for (i = 0; i < n; i++) {
+ dbus_int32_t this_card;
+
+ this_card = libhal_device_get_property_int(hal, udis[i], "sound.card", &error);
+ if (dbus_error_is_set(&error)) {
+ dbus_error_free(&error);
+ continue;
+ }
+
+ if (this_card == card)
+ break;
+
+ }
+
+ if (i >= n)
+ goto finish;
+
+ pa_proplist_sets(p, "hal.udi", udis[i]);
+
+ t = libhal_device_get_property_string(hal, udis[i], "info.product", &error);
+ if (dbus_error_is_set(&error))
+ dbus_error_free(&error);
+ if (t) {
+ pa_proplist_sets(p, "hal.product", t);
+ libhal_free_string(t);
+ }
+
+ t = libhal_device_get_property_string(hal, udis[i], "sound.card_id", &error);
+ if (dbus_error_is_set(&error))
+ dbus_error_free(&error);
+ if (t) {
+ pa_proplist_sets(p, "hal.card_id", t);
+ libhal_free_string(t);
+ }
+
+ r = 0;
+
+finish:
+
+ if (udis)
+ libhal_free_string_array(udis);
+
+ dbus_error_free(&error);
+
+ if (hal) {
+ libhal_ctx_shutdown(hal, &error);
+ libhal_ctx_free(hal);
+ dbus_error_free(&error);
+ }
+
+ if (c)
+ pa_dbus_connection_unref(c);
+
+ return r;
+}