be1936bb85
USB device disconnection is detected via a hotplug callback when it is supported. In addition, report disconnection on libusb calls returning LIBUSB_ERROR_NO_DEVICE or LIBUSB_ERROR_NOT_FOUND. This allows to detect disconnection after a libusb call when hotplug is not available. PR #3011 <https://github.com/Genymobile/scrcpy/pull/3011>
88 lines
1.9 KiB
C
88 lines
1.9 KiB
C
#ifndef SC_USB_H
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#define SC_USB_H
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#include "common.h"
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#include <stdbool.h>
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#include <libusb-1.0/libusb.h>
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#include "util/thread.h"
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struct sc_usb {
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libusb_context *context;
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libusb_device_handle *handle;
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const struct sc_usb_callbacks *cbs;
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void *cbs_userdata;
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bool has_callback_handle;
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libusb_hotplug_callback_handle callback_handle;
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bool has_libusb_event_thread;
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sc_thread libusb_event_thread;
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atomic_bool stopped; // only used if cbs != NULL
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atomic_flag disconnection_notified;
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};
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struct sc_usb_callbacks {
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void (*on_disconnected)(struct sc_usb *usb, void *userdata);
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};
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struct sc_usb_device {
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libusb_device *device;
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char *serial;
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char *manufacturer;
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char *product;
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uint16_t vid;
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uint16_t pid;
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bool selected;
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};
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void
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sc_usb_device_destroy(struct sc_usb_device *usb_device);
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/**
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* Move src to dst
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*
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* After this call, the content of src is undefined, except that
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* sc_usb_device_destroy() can be called.
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*
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* This is useful to take a device from a list that will be destroyed, without
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* making unnecessary copies.
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*/
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void
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sc_usb_device_move(struct sc_usb_device *dst, struct sc_usb_device *src);
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void
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sc_usb_devices_destroy_all(struct sc_usb_device *usb_devices, size_t count);
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bool
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sc_usb_init(struct sc_usb *usb);
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void
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sc_usb_destroy(struct sc_usb *usb);
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bool
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sc_usb_select_device(struct sc_usb *usb, const char *serial,
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struct sc_usb_device *out_device);
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bool
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sc_usb_connect(struct sc_usb *usb, libusb_device *device,
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const struct sc_usb_callbacks *cbs, void *cbs_userdata);
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void
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sc_usb_disconnect(struct sc_usb *usb);
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// A client should call this function with the return value of a libusb call
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// to detect disconnection immediately
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bool
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sc_usb_check_disconnected(struct sc_usb *usb, int result);
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void
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sc_usb_stop(struct sc_usb *usb);
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void
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sc_usb_join(struct sc_usb *usb);
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#endif
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