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https://github.com/dolphin-emu/dolphin.git
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256c9375c9
* Simplifies libusb context usage and allows us to set options for all contexts easily. Notably, this lets us enable usbdk support in libusb, which is now opt-in in the latest version. * Moves the libusb config descriptor wrapper class to LibusbUtils too since that could easily be reused. * Moves device listing to LibusbUtils too and add a lock around it as some libusb backends are not thread safe. * Consequences: only a single context and a single event handling thread is used now, which is more efficient.
49 lines
1.2 KiB
C++
49 lines
1.2 KiB
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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// Use this to get a libusb context. Do *not* use any other context
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// because some libusb backends such as UsbDk only work properly with a single context.
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// Additionally, device lists must be retrieved using GetDeviceList for thread safety reasons.
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Context& GetContext();
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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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