73 lines
1.5 KiB
C++
73 lines
1.5 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
// Copyright The Music Player Daemon Project
|
|
|
|
#include "ClientInit.hxx"
|
|
#include "Init.hxx"
|
|
#include "Error.hxx"
|
|
#include "Callback.hxx"
|
|
#include "thread/Mutex.hxx"
|
|
|
|
#include <upnptools.h>
|
|
|
|
#include <cassert>
|
|
|
|
static Mutex upnp_client_init_mutex;
|
|
static unsigned upnp_client_ref;
|
|
static UpnpClient_Handle upnp_client_handle;
|
|
|
|
static int
|
|
UpnpClientCallback(Upnp_EventType et,
|
|
const void *evp,
|
|
void *cookie) noexcept
|
|
{
|
|
if (cookie == nullptr)
|
|
/* this is the cookie passed to UpnpRegisterClient();
|
|
but can this ever happen? Will libupnp ever invoke
|
|
the registered callback without that cookie? */
|
|
return UPNP_E_SUCCESS;
|
|
|
|
UpnpCallback &callback = UpnpCallback::FromUpnpCookie(cookie);
|
|
return callback.Invoke(et, evp);
|
|
}
|
|
|
|
static void
|
|
DoInit()
|
|
{
|
|
auto code = UpnpRegisterClient(UpnpClientCallback, nullptr,
|
|
&upnp_client_handle);
|
|
if (code != UPNP_E_SUCCESS)
|
|
throw Upnp::MakeError(code, "UpnpRegisterClient() failed");
|
|
}
|
|
|
|
UpnpClient_Handle
|
|
UpnpClientGlobalInit(const char* iface)
|
|
{
|
|
UpnpGlobalInit(iface);
|
|
|
|
try {
|
|
const std::scoped_lock protect{upnp_client_init_mutex};
|
|
if (upnp_client_ref == 0)
|
|
DoInit();
|
|
} catch (...) {
|
|
UpnpGlobalFinish();
|
|
throw;
|
|
}
|
|
|
|
++upnp_client_ref;
|
|
return upnp_client_handle;
|
|
}
|
|
|
|
void
|
|
UpnpClientGlobalFinish() noexcept
|
|
{
|
|
{
|
|
const std::scoped_lock protect{upnp_client_init_mutex};
|
|
|
|
assert(upnp_client_ref > 0);
|
|
if (--upnp_client_ref == 0)
|
|
UpnpUnRegisterClient(upnp_client_handle);
|
|
}
|
|
|
|
UpnpGlobalFinish();
|
|
}
|