include a few HAL properties in our card/sink/source properties for ALSA devices

2025-11-05 13:29:57 -05:00 · 2009-01-24 01:25:11 +01:00 · 2009-01-24 01:25:11 +01:00 · a365c8212d
commit a365c8212d
parent 54dad91f07
11 changed files with 186 additions and 10 deletions
--- a/src/modules/hal-util.c
+++ 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;
+}