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libusbev.h 1.7 KiB
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  • /*
     * Glue for using libusb with libev
     * 
     * Copyright (c) 2013 Micah Elizabeth Scott
     * 
     * Permission is hereby granted, free of charge, to any person obtaining a copy of
     * this software and associated documentation files (the "Software"), to deal in
     * the Software without restriction, including without limitation the rights to
     * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
     * the Software, and to permit persons to whom the Software is furnished to do so,
     * subject to the following conditions:
     * 
     * The above copyright notice and this permission notice shall be included in all
     * copies or substantial portions of the Software.
     * 
     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
     * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
     * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
     * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     */
    
    #pragma once
    #include <ev.h>
    #include <libusb.h>
    #include <map>
    
    class LibUSBEventBridge
    {
    public:
    
        // Call after libusb_init
        void init(struct libusb_context *ctx, struct ev_loop *loop);
    
    private:
        struct Watcher {
            ev_io io;
            LibUSBEventBridge *self;
        };
    
        struct libusb_context *mCtx;
        struct ev_loop *mLoop;
        std::map<int, Watcher*> mWatchers;
    
        static void cbEvent(struct ev_loop *loop, ev_io *io, int revents);
        static void cbAdded(int fd, short events, void *user_data);
        static void cbRemoved(int fd, void *user_data);
    };