// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module device.usb;

import "device.mojom";

struct DeviceFilter {
  bool has_vendor_id;
  uint16 vendor_id;

  bool has_product_id;
  uint16 product_id;

  bool has_class_code;
  uint8 class_code;

  bool has_subclass_code;
  uint8 subclass_code;

  bool has_protocol_code;
  uint8 protocol_code;
};

struct EnumerationOptions {
  array<DeviceFilter>? filters;
};

interface DeviceManager {
  // Retrieves information about all devices available to the DeviceManager
  // implementation.
  GetDevices(EnumerationOptions? options) => (array<DeviceInfo> results);

  // Requests a device by guid.
  GetDevice(string guid, Device& device_request);

  // Sets the client for this DeviceManager service. The service will notify its
  // client of device events such as connection and disconnection.
  SetClient(DeviceManagerClient client);
};

interface DeviceManagerClient {
  // Called when a device is connected to the host.
  OnDeviceAdded(DeviceInfo device_info);

  // Called when a device is disconnected from the host.
  OnDeviceRemoved(DeviceInfo device_info);
};