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https://github.com/dolphin-emu/dolphin.git
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cf60a9a7f7
Unfortunately, it appears that using libusb's synchronous transfer API from several threads causes nasty race conditions in event handling and can lead to deadlocks, despite the fact that libusb's synchronous API is documented to be perfectly fine to use from several threads (only the manual polling functionality is supposed to require special precautions). Since usbdk was the only real reason for using a single libusb context and since usbdk (currently) has so many issues with Dolphin, I think dropping support for it in order to fix other backends is acceptable.
44 lines
943 B
C++
44 lines
943 B
C++
// Copyright 2019 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#pragma once
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#include <functional>
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#include <memory>
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#include "Common/CommonTypes.h"
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struct libusb_config_descriptor;
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struct libusb_context;
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struct libusb_device;
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namespace LibusbUtils
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{
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template <typename T>
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using UniquePtr = std::unique_ptr<T, void (*)(T*)>;
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// Return false to stop iterating the device list.
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using GetDeviceListCallback = std::function<bool(libusb_device* device)>;
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class Context
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{
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public:
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Context();
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~Context();
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operator libusb_context*() const;
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bool IsValid() const;
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// Only valid if the context is valid.
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bool GetDeviceList(GetDeviceListCallback callback);
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private:
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class Impl;
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std::unique_ptr<Impl> m_impl;
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};
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using ConfigDescriptor = UniquePtr<libusb_config_descriptor>;
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ConfigDescriptor MakeConfigDescriptor(libusb_device* device, u8 config_num = 0);
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} // namespace LibusbUtils
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