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// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
// DAMAGE.
#include <glib.h>
#include <libgupnp/gupnp.h>
char CONTENT_DIR[] = "urn:schemas-upnp-org:service:RenderingControl:1";
gboolean on_timeout(gpointer user_data)
{
g_main_loop_quit ((GMainLoop*)(user_data));
return FALSE;
}
void
gvalue_free (gpointer value)
{
g_value_unset ((GValue *) value);
g_free (value);
}
void
on_introspection (GObject *object, GAsyncResult *res, gpointer user_data)
{
GError *error = NULL;
GUPnPServiceIntrospection *i = gupnp_service_info_introspect_finish (
GUPNP_SERVICE_INFO (object),
res,
&error);
if (error != NULL) {
g_critical ("%s", error->message);
g_clear_error (&error);
}
const GUPnPServiceActionInfo *info =
gupnp_service_introspection_get_action (i, "GetVolume");
const char *state_variable_name =
((GUPnPServiceActionArgInfo *) info->arguments->next->data)
->related_state_variable;
const char *channel = gupnp_service_introspection_get_state_variable (
i,
state_variable_name)
->allowed_values->data;
g_print ("Calling GetVolume for channel %s...", channel);
GUPnPServiceProxyAction *a =
gupnp_service_proxy_action_new ("GetVolume",
"InstanceID", G_TYPE_INT, 0,
"Channel", G_TYPE_STRING, channel,
NULL);
gupnp_service_proxy_call_action (GUPNP_SERVICE_PROXY (object),
a,
NULL,
&error);
GList *out_names = NULL;
out_names = g_list_prepend (out_names, "CurrentVolume");
GList *out_types = NULL;
out_types =
g_list_prepend (out_types, GSIZE_TO_POINTER (G_TYPE_STRING));
GList *out_values = NULL;
gupnp_service_proxy_action_get_result_list (a,
out_names,
out_types,
&out_values,
&error);
g_list_free (out_types);
g_list_free (out_names);
if (error != NULL) {
g_critical ("%s", error->message);
g_clear_error (&error);
} else if (out_values != NULL) {
g_print ("Current volume: %s\n",
g_value_get_string (out_values->data));
}
g_list_free_full (out_values, gvalue_free);
gupnp_service_proxy_action_unref (a);
g_object_unref (i);
}
void on_proxy_available (GUPnPControlPoint *cp, GUPnPServiceProxy *proxy, gpointer user_data)
{
g_autofree char *id =
gupnp_service_info_get_id (GUPNP_SERVICE_INFO (proxy));
g_print ("Got ServiceProxy %s at %s\n",
id,
gupnp_service_info_get_location (GUPNP_SERVICE_INFO (proxy)));
g_print ("Introspecting service ...\n");
gupnp_service_info_introspect_async (GUPNP_SERVICE_INFO (proxy),
NULL,
on_introspection,
NULL);
}
int main(int argc, char *argv[])
{
GError *error = NULL;
GMainLoop *loop = g_main_loop_new (NULL, FALSE);
GUPnPContext *context = gupnp_context_new_full ("wlp3s0",
NULL,
0,
GSSDP_UDA_VERSION_1_0,
&error);
if (error != NULL) {
g_error ("%s", error->message);
}
GUPnPControlPoint *cp = gupnp_control_point_new (context, CONTENT_DIR);
g_signal_connect (cp, "service-proxy-available", G_CALLBACK (on_proxy_available), NULL);
gssdp_resource_browser_set_active (GSSDP_RESOURCE_BROWSER (cp), TRUE);
g_timeout_add_seconds (10, on_timeout, loop);
g_main_loop_run (loop);
g_object_unref (cp);
g_object_unref (context);
g_main_loop_unref (loop);
return 0;
}
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