/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.accessorydisplay.sink;
// Constants from kernel include/linux/usb/f_accessory.h
final class UsbAccessoryConstants {
/* Use Google Vendor ID when in accessory mode */
public static final int USB_ACCESSORY_VENDOR_ID = 0x18D1;
/* Product ID to use when in accessory mode */
public static final int USB_ACCESSORY_PRODUCT_ID = 0x2D00;
/* Product ID to use when in accessory mode and adb is enabled */
public static final int USB_ACCESSORY_ADB_PRODUCT_ID = 0x2D01;
/* Indexes for strings sent by the host via ACCESSORY_SEND_STRING */
public static final int ACCESSORY_STRING_MANUFACTURER = 0;
public static final int ACCESSORY_STRING_MODEL = 1;
public static final int ACCESSORY_STRING_DESCRIPTION = 2;
public static final int ACCESSORY_STRING_VERSION = 3;
public static final int ACCESSORY_STRING_URI = 4;
public static final int ACCESSORY_STRING_SERIAL = 5;
/* Control request for retrieving device's protocol version
*
* requestType: USB_DIR_IN | USB_TYPE_VENDOR
* request: ACCESSORY_GET_PROTOCOL
* value: 0
* index: 0
* data version number (16 bits little endian)
* 1 for original accessory support
* 2 adds HID and device to host audio support
*/
public static final int ACCESSORY_GET_PROTOCOL = 51;
/* Control request for host to send a string to the device
*
* requestType: USB_DIR_OUT | USB_TYPE_VENDOR
* request: ACCESSORY_SEND_STRING
* value: 0
* index: string ID
* data zero terminated UTF8 string
*
* The device can later retrieve these strings via the
* ACCESSORY_GET_STRING_* ioctls
*/
public static final int ACCESSORY_SEND_STRING = 52;
/* Control request for starting device in accessory mode.
* The host sends this after setting all its strings to the device.
*
* requestType: USB_DIR_OUT | USB_TYPE_VENDOR
* request: ACCESSORY_START
* value: 0
* index: 0
* data none
*/
public static final int ACCESSORY_START = 53;
/* Control request for registering a HID device.
* Upon registering, a unique ID is sent by the accessory in the
* value parameter. This ID will be used for future commands for
* the device
*
* requestType: USB_DIR_OUT | USB_TYPE_VENDOR
* request: ACCESSORY_REGISTER_HID_DEVICE
* value: Accessory assigned ID for the HID device
* index: total length of the HID report descriptor
* data none
*/
public static final int ACCESSORY_REGISTER_HID = 54;
/* Control request for unregistering a HID device.
*
* requestType: USB_DIR_OUT | USB_TYPE_VENDOR
* request: ACCESSORY_REGISTER_HID
* value: Accessory assigned ID for the HID device
* index: 0
* data none
*/
public static final int ACCESSORY_UNREGISTER_HID = 55;
/* Control request for sending the HID report descriptor.
* If the HID descriptor is longer than the endpoint zero max packet size,
* the descriptor will be sent in multiple ACCESSORY_SET_HID_REPORT_DESC
* commands. The data for the descriptor must be sent sequentially
* if multiple packets are needed.
*
* requestType: USB_DIR_OUT | USB_TYPE_VENDOR
* request: ACCESSORY_SET_HID_REPORT_DESC
* value: Accessory assigned ID for the HID device
* index: offset of data in descriptor
* (needed when HID descriptor is too big for one packet)
* data the HID report descriptor
*/
public static final int ACCESSORY_SET_HID_REPORT_DESC = 56;
/* Control request for sending HID events.
*
* requestType: USB_DIR_OUT | USB_TYPE_VENDOR
* request: ACCESSORY_SEND_HID_EVENT
* value: Accessory assigned ID for the HID device
* index: 0
* data the HID report for the event
*/
public static final int ACCESSORY_SEND_HID_EVENT = 57;
/* Control request for setting the audio mode.
*
* requestType: USB_DIR_OUT | USB_TYPE_VENDOR
* request: ACCESSORY_SET_AUDIO_MODE
* value: 0 - no audio
* 1 - device to host, 44100 16-bit stereo PCM
* index: 0
* data none
*/
public static final int ACCESSORY_SET_AUDIO_MODE = 58;
private UsbAccessoryConstants() {
}
}