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freebsd/lib/libusb/libusb20_desc.h
Pedro F. Giffuni 5e53a4f90f lib: further adoption of SPDX licensing ID tags. 
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using mis-identified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-26 02:00:33 +00:00

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/* $FreeBSD$ */
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
* Copyright (c) 2007-2008 Daniel Drake. All rights reserved.
* Copyright (c) 2001 Johannes Erdfelt. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* NOTE: This file contains the definition of some standard USB
* structures. All structures which name ends by *DECODED use host byte
* order.
*/
/*
* NOTE: This file uses a lot of macros. If you want to see what the
* macros become when they are expanded then run the following
* commands from your shell:
*
* cpp libusb20_desc.h > temp.h
* indent temp.h
* less temp.h
*/
#ifndef _LIBUSB20_DESC_H_
#define _LIBUSB20_DESC_H_
#ifndef LIBUSB_GLOBAL_INCLUDE_FILE
#include <stdint.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if 0
}; /* style */
#endif
/* basic macros */
#define LIBUSB20__NOT(...) __VA_ARGS__
#define LIBUSB20_NOT(arg) LIBUSB20__NOT(LIBUSB20_YES arg(() LIBUSB20_NO))
#define LIBUSB20_YES(...) __VA_ARGS__
#define LIBUSB20_NO(...)
#define LIBUSB20_END(...) __VA_ARGS__
#define LIBUSB20_MAX(a,b) (((a) > (b)) ? (a) : (b))
#define LIBUSB20_MIN(a,b) (((a) < (b)) ? (a) : (b))
#define LIBUSB20_ADD_BYTES(ptr,off) \
((void *)(((const uint8_t *)(ptr)) + (off) - ((const uint8_t *)0)))
/* basic message elements */
enum {
LIBUSB20_ME_INT8,
LIBUSB20_ME_INT16,
LIBUSB20_ME_INT32,
LIBUSB20_ME_INT64,
LIBUSB20_ME_STRUCT,
LIBUSB20_ME_MAX, /* used to indicate end */
};
/* basic message element modifiers */
enum {
LIBUSB20_ME_IS_UNSIGNED = 0x00,
LIBUSB20_ME_IS_SIGNED = 0x80,
LIBUSB20_ME_MASK = 0x7F,
};
enum {
LIBUSB20_ME_IS_RAW, /* structure excludes length field
* (hardcoded value) */
LIBUSB20_ME_IS_ENCODED, /* structure includes length field */
LIBUSB20_ME_IS_EMPTY, /* no structure */
LIBUSB20_ME_IS_DECODED, /* structure is recursive */
};
/* basic helper structures and macros */
#define LIBUSB20_ME_STRUCT_ALIGN sizeof(void *)
struct libusb20_me_struct {
void *ptr; /* data pointer */
uint16_t len; /* defaults to zero */
uint16_t type; /* defaults to LIBUSB20_ME_IS_EMPTY */
} __aligned(LIBUSB20_ME_STRUCT_ALIGN);
struct libusb20_me_format {
const uint8_t *format; /* always set */
const char *desc; /* optionally set */
const char *fields; /* optionally set */
};
#define LIBUSB20_ME_STRUCT(n, field, arg, ismeta) \
ismeta ( LIBUSB20_ME_STRUCT, 1, 0, ) \
LIBUSB20_NOT(ismeta) ( struct libusb20_me_struct field; )
#define LIBUSB20_ME_STRUCT_ARRAY(n, field, arg, ismeta) \
ismeta ( LIBUSB20_ME_STRUCT , (arg) & 0xFF, \
((arg) / 0x100) & 0xFF, ) \
LIBUSB20_NOT(ismeta) ( struct libusb20_me_struct field [arg]; )
#define LIBUSB20_ME_INTEGER(n, field, ismeta, un, u, bits, a, size) \
ismeta ( LIBUSB20_ME_INT##bits | \
LIBUSB20_ME_IS_##un##SIGNED , \
(size) & 0xFF, ((size) / 0x100) & 0xFF, ) \
LIBUSB20_NOT(ismeta) ( u##int##bits##_t \
__aligned((bits) / 8) field a; )
#define LIBUSB20_ME_UINT8_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta, UN, u, 8, , 1)
#define LIBUSB20_ME_UINT8_ARRAY_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta, UN, u, 8, [arg], arg)
#define LIBUSB20_ME_SINT8_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta,,, 8, , 1)
#define LIBUSB20_ME_SINT8_ARRAY_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta,,, 8, [arg], arg)
#define LIBUSB20_ME_UINT16_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta, UN, u, 16, , 1)
#define LIBUSB20_ME_UINT16_ARRAY_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta, UN, u, 16, [arg], arg)
#define LIBUSB20_ME_SINT16_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta,,, 16, , 1)
#define LIBUSB20_ME_SINT16_ARRAY_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta,,, 16, [arg], arg)
#define LIBUSB20_ME_UINT32_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta, UN, u, 32, , 1)
#define LIBUSB20_ME_UINT32_ARRAY_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta, UN, u, 32, [arg], arg)
#define LIBUSB20_ME_SINT32_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta,,, 32, , 1)
#define LIBUSB20_ME_SINT32_ARRAY_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta,,, 32, [arg], arg)
#define LIBUSB20_ME_UINT64_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta, UN, u, 64, , 1)
#define LIBUSB20_ME_UINT64_ARRAY_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta, UN, u, 64, [arg], arg)
#define LIBUSB20_ME_SINT64_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta,,, 64, , 1)
#define LIBUSB20_ME_SINT64_ARRAY_T(n, field, arg, ismeta) \
LIBUSB20_ME_INTEGER(n, field, ismeta,,, 64, [arg], arg)
#define LIBUSB20_MAKE_DECODED_FIELD(n, type, field, arg) \
LIBUSB20_ME_##type (n, field, arg, LIBUSB20_NO)
#define LIBUSB20_MAKE_STRUCT(name) \
extern const struct libusb20_me_format \
name##_FORMAT[1]; \
struct name##_DECODED { \
const struct libusb20_me_format *name##_FORMAT; \
name (LIBUSB20_MAKE_DECODED_FIELD,) \
}
#define LIBUSB20_MAKE_STRUCT_FORMAT(name) \
const struct libusb20_me_format \
name##_FORMAT[1] = {{ \
.format = LIBUSB20_MAKE_FORMAT(name), \
.desc = #name, \
.fields = NULL, \
}}
#define LIBUSB20_MAKE_FORMAT_SUB(n, type, field, arg) \
LIBUSB20_ME_##type (n, field, arg, LIBUSB20_YES)
#define LIBUSB20_MAKE_FORMAT(what) (const uint8_t []) \
{ what (LIBUSB20_MAKE_FORMAT_SUB, ) LIBUSB20_ME_MAX, 0, 0 }
#define LIBUSB20_INIT(what, ptr) do { \
memset(ptr, 0, sizeof(*(ptr))); \
(ptr)->what##_FORMAT = what##_FORMAT; \
} while (0)
#define LIBUSB20_DEVICE_DESC(m,n) \
m(n, UINT8_T, bLength, ) \
m(n, UINT8_T, bDescriptorType, ) \
m(n, UINT16_T, bcdUSB, ) \
m(n, UINT8_T, bDeviceClass, ) \
m(n, UINT8_T, bDeviceSubClass, ) \
m(n, UINT8_T, bDeviceProtocol, ) \
m(n, UINT8_T, bMaxPacketSize0, ) \
m(n, UINT16_T, idVendor, ) \
m(n, UINT16_T, idProduct, ) \
m(n, UINT16_T, bcdDevice, ) \
m(n, UINT8_T, iManufacturer, ) \
m(n, UINT8_T, iProduct, ) \
m(n, UINT8_T, iSerialNumber, ) \
m(n, UINT8_T, bNumConfigurations, ) \
LIBUSB20_MAKE_STRUCT(LIBUSB20_DEVICE_DESC);
#define LIBUSB20_ENDPOINT_DESC(m,n) \
m(n, UINT8_T, bLength, ) \
m(n, UINT8_T, bDescriptorType, ) \
m(n, UINT8_T, bEndpointAddress, ) \
m(n, UINT8_T, bmAttributes, ) \
m(n, UINT16_T, wMaxPacketSize, ) \
m(n, UINT8_T, bInterval, ) \
m(n, UINT8_T, bRefresh, ) \
m(n, UINT8_T, bSynchAddress, ) \
LIBUSB20_MAKE_STRUCT(LIBUSB20_ENDPOINT_DESC);
#define LIBUSB20_INTERFACE_DESC(m,n) \
m(n, UINT8_T, bLength, ) \
m(n, UINT8_T, bDescriptorType, ) \
m(n, UINT8_T, bInterfaceNumber, ) \
m(n, UINT8_T, bAlternateSetting, ) \
m(n, UINT8_T, bNumEndpoints, ) \
m(n, UINT8_T, bInterfaceClass, ) \
m(n, UINT8_T, bInterfaceSubClass, ) \
m(n, UINT8_T, bInterfaceProtocol, ) \
m(n, UINT8_T, iInterface, ) \
LIBUSB20_MAKE_STRUCT(LIBUSB20_INTERFACE_DESC);
#define LIBUSB20_CONFIG_DESC(m,n) \
m(n, UINT8_T, bLength, ) \
m(n, UINT8_T, bDescriptorType, ) \
m(n, UINT16_T, wTotalLength, ) \
m(n, UINT8_T, bNumInterfaces, ) \
m(n, UINT8_T, bConfigurationValue, ) \
m(n, UINT8_T, iConfiguration, ) \
m(n, UINT8_T, bmAttributes, ) \
m(n, UINT8_T, bMaxPower, ) \
LIBUSB20_MAKE_STRUCT(LIBUSB20_CONFIG_DESC);
#define LIBUSB20_CONTROL_SETUP(m,n) \
m(n, UINT8_T, bmRequestType, ) \
m(n, UINT8_T, bRequest, ) \
m(n, UINT16_T, wValue, ) \
m(n, UINT16_T, wIndex, ) \
m(n, UINT16_T, wLength, ) \
LIBUSB20_MAKE_STRUCT(LIBUSB20_CONTROL_SETUP);
#define LIBUSB20_SS_ENDPT_COMP_DESC(m,n) \
m(n, UINT8_T, bLength, ) \
m(n, UINT8_T, bDescriptorType, ) \
m(n, UINT8_T, bMaxBurst, ) \
m(n, UINT8_T, bmAttributes, ) \
m(n, UINT16_T, wBytesPerInterval, ) \
LIBUSB20_MAKE_STRUCT(LIBUSB20_SS_ENDPT_COMP_DESC);
#define LIBUSB20_USB_20_DEVCAP_DESC(m,n) \
m(n, UINT8_T, bLength, ) \
m(n, UINT8_T, bDescriptorType, ) \
m(n, UINT8_T, bDevCapabilityType, ) \
m(n, UINT32_T, bmAttributes, ) \
LIBUSB20_MAKE_STRUCT(LIBUSB20_USB_20_DEVCAP_DESC);
#define LIBUSB20_SS_USB_DEVCAP_DESC(m,n) \
m(n, UINT8_T, bLength, ) \
m(n, UINT8_T, bDescriptorType, ) \
m(n, UINT8_T, bDevCapabilityType, ) \
m(n, UINT8_T, bmAttributes, ) \
m(n, UINT16_T, wSpeedSupported, ) \
m(n, UINT8_T, bFunctionalitySupport, ) \
m(n, UINT8_T, bU1DevExitLat, ) \
m(n, UINT16_T, wU2DevExitLat, ) \
LIBUSB20_MAKE_STRUCT(LIBUSB20_SS_USB_DEVCAP_DESC);
#define LIBUSB20_BOS_DESCRIPTOR(m,n) \
m(n, UINT8_T, bLength, ) \
m(n, UINT8_T, bDescriptorType, ) \
m(n, UINT16_T, wTotalLength, ) \
m(n, UINT8_T, bNumDeviceCapabilities, ) \
LIBUSB20_MAKE_STRUCT(LIBUSB20_BOS_DESCRIPTOR);
/* standard USB stuff */
/** \ingroup desc
* Device and/or Interface Class codes */
enum libusb20_class_code {
/** In the context of a \ref LIBUSB20_DEVICE_DESC "device
* descriptor", this bDeviceClass value indicates that each
* interface specifies its own class information and all
* interfaces operate independently.
*/
LIBUSB20_CLASS_PER_INTERFACE = 0,
/** Audio class */
LIBUSB20_CLASS_AUDIO = 1,
/** Communications class */
LIBUSB20_CLASS_COMM = 2,
/** Human Interface Device class */
LIBUSB20_CLASS_HID = 3,
/** Printer dclass */
LIBUSB20_CLASS_PRINTER = 7,
/** Picture transfer protocol class */
LIBUSB20_CLASS_PTP = 6,
/** Mass storage class */
LIBUSB20_CLASS_MASS_STORAGE = 8,
/** Hub class */
LIBUSB20_CLASS_HUB = 9,
/** Data class */
LIBUSB20_CLASS_DATA = 10,
/** Class is vendor-specific */
LIBUSB20_CLASS_VENDOR_SPEC = 0xff,
};
/** \ingroup desc
* Descriptor types as defined by the USB specification. */
enum libusb20_descriptor_type {
/** Device descriptor. See LIBUSB20_DEVICE_DESC. */
LIBUSB20_DT_DEVICE = 0x01,
/** Configuration descriptor. See LIBUSB20_CONFIG_DESC. */
LIBUSB20_DT_CONFIG = 0x02,
/** String descriptor */
LIBUSB20_DT_STRING = 0x03,
/** Interface descriptor. See LIBUSB20_INTERFACE_DESC. */
LIBUSB20_DT_INTERFACE = 0x04,
/** Endpoint descriptor. See LIBUSB20_ENDPOINT_DESC. */
LIBUSB20_DT_ENDPOINT = 0x05,
/** HID descriptor */
LIBUSB20_DT_HID = 0x21,
/** HID report descriptor */
LIBUSB20_DT_REPORT = 0x22,
/** Physical descriptor */
LIBUSB20_DT_PHYSICAL = 0x23,
/** Hub descriptor */
LIBUSB20_DT_HUB = 0x29,
/** Binary Object Store, BOS */
LIBUSB20_DT_BOS = 0x0f,
/** Device Capability */
LIBUSB20_DT_DEVICE_CAPABILITY = 0x10,
/** SuperSpeed endpoint companion */
LIBUSB20_DT_SS_ENDPOINT_COMPANION = 0x30,
};
/** \ingroup desc
* Device capability types as defined by the USB specification. */
enum libusb20_device_capability_type {
LIBUSB20_WIRELESS_USB_DEVICE_CAPABILITY = 0x1,
LIBUSB20_USB_2_0_EXTENSION_DEVICE_CAPABILITY = 0x2,
LIBUSB20_SS_USB_DEVICE_CAPABILITY = 0x3,
LIBUSB20_CONTAINER_ID_DEVICE_CAPABILITY = 0x4,
};
/* Descriptor sizes per descriptor type */
#define LIBUSB20_DT_DEVICE_SIZE 18
#define LIBUSB20_DT_CONFIG_SIZE 9
#define LIBUSB20_DT_INTERFACE_SIZE 9
#define LIBUSB20_DT_ENDPOINT_SIZE 7
#define LIBUSB20_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */
#define LIBUSB20_DT_HUB_NONVAR_SIZE 7
#define LIBUSB20_DT_SS_ENDPOINT_COMPANION_SIZE 6
#define LIBUSB20_DT_BOS_SIZE 5
#define LIBUSB20_USB_2_0_EXTENSION_DEVICE_CAPABILITY_SIZE 7
#define LIBUSB20_SS_USB_DEVICE_CAPABILITY_SIZE 10
#define LIBUSB20_ENDPOINT_ADDRESS_MASK 0x0f /* in bEndpointAddress */
#define LIBUSB20_ENDPOINT_DIR_MASK 0x80
/** \ingroup desc
* Endpoint direction. Values for bit 7 of the
* \ref LIBUSB20_ENDPOINT_DESC::bEndpointAddress "endpoint address" scheme.
*/
enum libusb20_endpoint_direction {
/** In: device-to-host */
LIBUSB20_ENDPOINT_IN = 0x80,
/** Out: host-to-device */
LIBUSB20_ENDPOINT_OUT = 0x00,
};
#define LIBUSB20_TRANSFER_TYPE_MASK 0x03 /* in bmAttributes */
/** \ingroup desc
* Endpoint transfer type. Values for bits 0:1 of the
* \ref LIBUSB20_ENDPOINT_DESC::bmAttributes "endpoint attributes" field.
*/
enum libusb20_transfer_type {
/** Control endpoint */
LIBUSB20_TRANSFER_TYPE_CONTROL = 0,
/** Isochronous endpoint */
LIBUSB20_TRANSFER_TYPE_ISOCHRONOUS = 1,
/** Bulk endpoint */
LIBUSB20_TRANSFER_TYPE_BULK = 2,
/** Interrupt endpoint */
LIBUSB20_TRANSFER_TYPE_INTERRUPT = 3,
};
/** \ingroup misc
* Standard requests, as defined in table 9-3 of the USB2 specifications */
enum libusb20_standard_request {
/** Request status of the specific recipient */
LIBUSB20_REQUEST_GET_STATUS = 0x00,
/** Clear or disable a specific feature */
LIBUSB20_REQUEST_CLEAR_FEATURE = 0x01,
/* 0x02 is reserved */
/** Set or enable a specific feature */
LIBUSB20_REQUEST_SET_FEATURE = 0x03,
/* 0x04 is reserved */
/** Set device address for all future accesses */
LIBUSB20_REQUEST_SET_ADDRESS = 0x05,
/** Get the specified descriptor */
LIBUSB20_REQUEST_GET_DESCRIPTOR = 0x06,
/** Used to update existing descriptors or add new descriptors */
LIBUSB20_REQUEST_SET_DESCRIPTOR = 0x07,
/** Get the current device configuration value */
LIBUSB20_REQUEST_GET_CONFIGURATION = 0x08,
/** Set device configuration */
LIBUSB20_REQUEST_SET_CONFIGURATION = 0x09,
/** Return the selected alternate setting for the specified
* interface */
LIBUSB20_REQUEST_GET_INTERFACE = 0x0A,
/** Select an alternate interface for the specified interface */
LIBUSB20_REQUEST_SET_INTERFACE = 0x0B,
/** Set then report an endpoint's synchronization frame */
LIBUSB20_REQUEST_SYNCH_FRAME = 0x0C,
/** Set U1 and U2 system exit latency */
LIBUSB20_REQUEST_SET_SEL = 0x30,
/** Set isochronous delay */
LIBUSB20_REQUEST_SET_ISOCH_DELAY = 0x31,
};
/** \ingroup misc
* Request type bits of the
* \ref libusb20_control_setup::bmRequestType "bmRequestType" field in
* control transfers. */
enum libusb20_request_type {
/** Standard */
LIBUSB20_REQUEST_TYPE_STANDARD = (0x00 << 5),
/** Class */
LIBUSB20_REQUEST_TYPE_CLASS = (0x01 << 5),
/** Vendor */
LIBUSB20_REQUEST_TYPE_VENDOR = (0x02 << 5),
/** Reserved */
LIBUSB20_REQUEST_TYPE_RESERVED = (0x03 << 5),
};
/** \ingroup misc
* Recipient bits of the
* \ref libusb20_control_setup::bmRequestType "bmRequestType" field in
* control transfers. Values 4 through 31 are reserved. */
enum libusb20_request_recipient {
/** Device */
LIBUSB20_RECIPIENT_DEVICE = 0x00,
/** Interface */
LIBUSB20_RECIPIENT_INTERFACE = 0x01,
/** Endpoint */
LIBUSB20_RECIPIENT_ENDPOINT = 0x02,
/** Other */
LIBUSB20_RECIPIENT_OTHER = 0x03,
};
#define LIBUSB20_ISO_SYNC_TYPE_MASK 0x0C
/** \ingroup desc
* Synchronization type for isochronous endpoints. Values for bits 2:3
* of the \ref LIBUSB20_ENDPOINT_DESC::bmAttributes "bmAttributes"
* field in LIBUSB20_ENDPOINT_DESC.
*/
enum libusb20_iso_sync_type {
/** No synchronization */
LIBUSB20_ISO_SYNC_TYPE_NONE = 0,
/** Asynchronous */
LIBUSB20_ISO_SYNC_TYPE_ASYNC = 1,
/** Adaptive */
LIBUSB20_ISO_SYNC_TYPE_ADAPTIVE = 2,
/** Synchronous */
LIBUSB20_ISO_SYNC_TYPE_SYNC = 3,
};
#define LIBUSB20_ISO_USAGE_TYPE_MASK 0x30
/** \ingroup desc
* Usage type for isochronous endpoints. Values for bits 4:5 of the
* \ref LIBUSB20_ENDPOINT_DESC::bmAttributes "bmAttributes" field in
* LIBUSB20_ENDPOINT_DESC.
*/
enum libusb20_iso_usage_type {
/** Data endpoint */
LIBUSB20_ISO_USAGE_TYPE_DATA = 0,
/** Feedback endpoint */
LIBUSB20_ISO_USAGE_TYPE_FEEDBACK = 1,
/** Implicit feedback Data endpoint */
LIBUSB20_ISO_USAGE_TYPE_IMPLICIT = 2,
};
struct libusb20_endpoint {
struct LIBUSB20_ENDPOINT_DESC_DECODED desc;
struct libusb20_me_struct extra;
} __aligned(sizeof(void *));
struct libusb20_interface {
struct LIBUSB20_INTERFACE_DESC_DECODED desc;
struct libusb20_me_struct extra;
struct libusb20_interface *altsetting;
struct libusb20_endpoint *endpoints;
uint8_t num_altsetting;
uint8_t num_endpoints;
} __aligned(sizeof(void *));
struct libusb20_config {
struct LIBUSB20_CONFIG_DESC_DECODED desc;
struct libusb20_me_struct extra;
struct libusb20_interface *interface;
uint8_t num_interface;
} __aligned(sizeof(void *));
uint8_t libusb20_me_get_1(const struct libusb20_me_struct *ie, uint16_t offset);
uint16_t libusb20_me_get_2(const struct libusb20_me_struct *ie, uint16_t offset);
uint16_t libusb20_me_encode(void *ptr, uint16_t len, const void *pd);
uint16_t libusb20_me_decode(const void *ptr, uint16_t len, void *pd);
const uint8_t *libusb20_desc_foreach(const struct libusb20_me_struct *pdesc, const uint8_t *psubdesc);
struct libusb20_config *libusb20_parse_config_desc(const void *config_desc);
#if 0
{ /* style */
#endif
#ifdef __cplusplus
}
#endif
#endif /* _LIBUSB20_DESC_H_ */
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