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// Copyright 2017 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <libusb.h>
#include <memory>
#include <mutex>
#include "Common/LibusbContext.h"
#include "Common/MsgHandler.h"
namespace LibusbContext
{
static std::shared_ptr<libusb_context> s_libusb_context;
static std::once_flag s_context_initialized;
static libusb_context* Create()
{
libusb_context* context;
const int ret = libusb_init(&context);
if (ret < LIBUSB_SUCCESS)
{
bool is_windows = false;
#ifdef _WIN32
is_windows = true;
#endif
if (is_windows && ret == LIBUSB_ERROR_NOT_FOUND)
PanicAlertT("Failed to initialize libusb because usbdk is not installed.");
else
PanicAlertT("Failed to initialize libusb: %s", libusb_error_name(ret));
return nullptr;
}
return context;
}
std::shared_ptr<libusb_context> Get()
{
std::call_once(s_context_initialized, []() {
s_libusb_context.reset(Create(), [](auto* context) {
if (context != nullptr)
libusb_exit(context);
});
});
return s_libusb_context;
}
}
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