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Shofel2_T124_python/venv/lib/python3.10/site-packages/libusb/_libusb.py

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fully working method
2024-05-25 16:45:07 +00:00
# Copyright (c) 2016-2022 Adam Karpierz
# Licensed under the zlib/libpng License
# https://opensource.org/licenses/Zlib
# Public libusb header file
# Copyright (c) 2001 Johannes Erdfelt <johannes@erdfelt.com>
# Copyright (c) 2007-2008 Daniel Drake <dsd@gentoo.org>
# Copyright (c) 2012 Pete Batard <pete@akeo.ie>
# Copyright (c) 2012-2018 Nathan Hjelm <hjelmn@cs.unm.edu>
# Copyright (c) 2014-2020 Chris Dickens <christopher.a.dickens@gmail.com>
# For more information, please visit: http://libusb.info
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
import ctypes as ct
from ._platform import CFUNC
from ._platform import timeval
from ._dll import dll
intptr_t = (ct.c_int32 if ct.sizeof(ct.c_void_p) == ct.sizeof(ct.c_int32) else ct.c_int64)
# include <limits.h>
UINT_MAX = ct.c_uint(-1).value
INT_MAX = UINT_MAX >> 1
def LIBUSB_DEPRECATED_FOR(f): pass # __attribute__ ((deprecated ("Use " #f " instead")))
# \def LIBUSB_CALL
# \ingroup libusb::misc
# libusb's Windows calling convention.
#
# Under Windows, the selection of available compilers and configurations
# means that, unlike other platforms, there is not <em>one true calling
# convention</em> (calling convention: the manner in which parameters are
# passed to functions in the generated assembly code).
#
# Matching the Windows API itself, libusb uses the WINAPI convention (which
# translates to the <tt>stdcall</tt> convention) and guarantees that the
# library is compiled in this way. The public header file also includes
# appropriate annotations so that your own software will use the right
# convention, even if another convention is being used by default within
# your codebase.
#
# The one consideration that you must apply in your software is to mark
# all functions which you use as libusb callbacks with this LIBUSB_CALL
# annotation, so that they too get compiled for the correct calling
# convention.
#
# On non-Windows operating systems, this macro is defined as nothing. This
# means that you can apply it to your code without worrying about
# cross-platform compatibility.
# LIBUSB_CALL must be defined on both definition and declaration of libusb
# functions. You'd think that declaration would be enough, but cygwin will
# complain about conflicting types unless both are marked this way.
# The placement of this macro is important too; it must appear after the
# return type, before the function name. See internal documentation for
# API_EXPORTED.
# if defined(_WIN32) || defined(__CYGWIN__)
# define LIBUSB_CALL WINAPI
# else
# define LIBUSB_CALL
# endif /* _WIN32 || __CYGWIN__ */
# \def LIBUSB_API_VERSION
# \ingroup libusb::misc
# libusb's API version.
#
# Since version 1.0.13, to help with feature detection, libusb defines
# a LIBUSB_API_VERSION macro that gets increased every time there is a
# significant change to the API, such as the introduction of a new call,
# the definition of a new macro/enum member, or any other element that
# libusb applications may want to detect at compilation time.
#
# The macro is typically used in an application as follows:
# \code
# #if defined(LIBUSB_API_VERSION) && (LIBUSB_API_VERSION >= 0x01001234)
# // Use one of the newer features from the libusb API
# #endif
# \endcode
#
# Internally, LIBUSB_API_VERSION is defined as follows:
# (libusb major << 24) | (libusb minor << 16) | (16 bit incremental)
LIBUSB_API_VERSION = 0x01000109
# The following is kept for compatibility, but will be deprecated in the future
LIBUSBX_API_VERSION = LIBUSB_API_VERSION
# \ingroup libusb::misc
# Convert a 16-bit value from host-endian to little-endian format. On
# little endian systems, this function does nothing. On big endian systems,
# the bytes are swapped.
# :param x: the host-endian value to convert
# :returns: the value in little-endian byte order
# static inline
@CFUNC(ct.c_uint16, ct.c_uint16)
def cpu_to_le16(x):
class Tmp(ct.Union):
_fields_ = [
("b8", (ct.c_uint8 * 2)),
("b16", ct.c_uint16),
]
tmp = Tmp()
tmp.b8[1] = ct.c_uint8(x >> 8)
tmp.b8[0] = ct.c_uint8(x & 0xff)
return tmp.b16
# \def libusb.le16_to_cpu
# \ingroup libusb::misc
# Convert a 16-bit value from little-endian to host-endian format. On
# little endian systems, this function does nothing. On big endian systems,
# the bytes are swapped.
# :param x: the little-endian value to convert
# :returns: the value in host-endian byte order
le16_to_cpu = cpu_to_le16
### standard USB stuff ###
# \ingroup libusb::desc
# Device and/or Interface Class codes
class_code = ct.c_int
(
# In the context of a \ref libusb.device_descriptor "device descriptor",
# this bDeviceClass value indicates that each interface specifies its
# own class information and all interfaces operate independently.
LIBUSB_CLASS_PER_INTERFACE,
# Audio class
LIBUSB_CLASS_AUDIO,
# Communications class
LIBUSB_CLASS_COMM,
# Human Interface Device class
LIBUSB_CLASS_HID,
# Physical
LIBUSB_CLASS_PHYSICAL,
# Image class
LIBUSB_CLASS_IMAGE,
LIBUSB_CLASS_PTP, # legacy name from libusb-0.1 usb.h
# Printer class
LIBUSB_CLASS_PRINTER,
# Mass storage class
LIBUSB_CLASS_MASS_STORAGE,
# Hub class
LIBUSB_CLASS_HUB,
# Data class
LIBUSB_CLASS_DATA,
# Smart Card
LIBUSB_CLASS_SMART_CARD,
# Content Security
LIBUSB_CLASS_CONTENT_SECURITY,
# Video
LIBUSB_CLASS_VIDEO,
# Personal Healthcare
LIBUSB_CLASS_PERSONAL_HEALTHCARE,
# Diagnostic Device
LIBUSB_CLASS_DIAGNOSTIC_DEVICE,
# Wireless class
LIBUSB_CLASS_WIRELESS,
# Miscellaneous class
LIBUSB_CLASS_MISCELLANEOUS,
# Application class
LIBUSB_CLASS_APPLICATION,
# Class is vendor-specific
LIBUSB_CLASS_VENDOR_SPEC,
) = (0x00, 0x01, 0x02, 0x03, 0x05, 0x06, 0x06, 0x07, 0x08, 0x09,
0x0a, 0x0b, 0x0d, 0x0e, 0x0f, 0xdc, 0xe0, 0xef, 0xfe, 0xff)
# \ingroup libusb::desc
# Descriptor types as defined by the USB specification.
descriptor_type = ct.c_int
(
# Device descriptor. See libusb.device_descriptor.
LIBUSB_DT_DEVICE,
# Configuration descriptor. See libusb.config_descriptor.
LIBUSB_DT_CONFIG,
# String descriptor
LIBUSB_DT_STRING,
# Interface descriptor. See libusb.interface_descriptor.
LIBUSB_DT_INTERFACE,
# Endpoint descriptor. See libusb.endpoint_descriptor.
LIBUSB_DT_ENDPOINT,
# BOS descriptor
LIBUSB_DT_BOS,
# Device Capability descriptor
LIBUSB_DT_DEVICE_CAPABILITY,
# HID descriptor
LIBUSB_DT_HID,
# HID report descriptor
LIBUSB_DT_REPORT,
# Physical descriptor
LIBUSB_DT_PHYSICAL,
# Hub descriptor
LIBUSB_DT_HUB,
# SuperSpeed Hub descriptor
LIBUSB_DT_SUPERSPEED_HUB,
# SuperSpeed Endpoint Companion descriptor
LIBUSB_DT_SS_ENDPOINT_COMPANION,
) = (0x01, 0x02, 0x03, 0x04, 0x05, 0x0f, 0x10, 0x21, 0x22, 0x23, 0x29, 0x2a, 0x30)
# Descriptor sizes per descriptor type
LIBUSB_DT_DEVICE_SIZE = 18
LIBUSB_DT_CONFIG_SIZE = 9
LIBUSB_DT_INTERFACE_SIZE = 9
LIBUSB_DT_ENDPOINT_SIZE = 7
LIBUSB_DT_ENDPOINT_AUDIO_SIZE = 9 # Audio extension
LIBUSB_DT_HUB_NONVAR_SIZE = 7
LIBUSB_DT_SS_ENDPOINT_COMPANION_SIZE = 6
LIBUSB_DT_BOS_SIZE = 5
LIBUSB_DT_DEVICE_CAPABILITY_SIZE = 3
# BOS descriptor sizes
LIBUSB_BT_USB_2_0_EXTENSION_SIZE = 7
LIBUSB_BT_SS_USB_DEVICE_CAPABILITY_SIZE = 10
LIBUSB_BT_CONTAINER_ID_SIZE = 20
# We unwrap the BOS => define its max size
LIBUSB_DT_BOS_MAX_SIZE = (LIBUSB_DT_BOS_SIZE
+ LIBUSB_BT_USB_2_0_EXTENSION_SIZE
+ LIBUSB_BT_SS_USB_DEVICE_CAPABILITY_SIZE
+ LIBUSB_BT_CONTAINER_ID_SIZE)
LIBUSB_ENDPOINT_ADDRESS_MASK = 0x0f # in bEndpointAddress
LIBUSB_ENDPOINT_DIR_MASK = 0x80
# \ingroup libusb::desc
# Endpoint direction. Values for bit 7 of the
# \ref libusb.endpoint_descriptor::bEndpointAddress "endpoint address" scheme.
endpoint_direction = ct.c_int
(
# Out: host-to-device
LIBUSB_ENDPOINT_OUT,
# In: device-to-host
LIBUSB_ENDPOINT_IN,
) = (0x00, 0x80)
LIBUSB_TRANSFER_TYPE_MASK = 0x03 # in bmAttributes
# \ingroup libusb::desc
# Endpoint transfer type. Values for bits 0:1 of the
# \ref libusb.endpoint_descriptor::bmAttributes "endpoint attributes" field.
endpoint_transfer_type = ct.c_int
(
# Control endpoint
LIBUSB_ENDPOINT_TRANSFER_TYPE_CONTROL,
# Isochronous endpoint
LIBUSB_ENDPOINT_TRANSFER_TYPE_ISOCHRONOUS,
# Bulk endpoint
LIBUSB_ENDPOINT_TRANSFER_TYPE_BULK,
# Interrupt endpoint
LIBUSB_ENDPOINT_TRANSFER_TYPE_INTERRUPT,
) = (0x0, 0x1, 0x2, 0x3)
# \ingroup libusb::misc
# Standard requests, as defined in table 9-5 of the USB 3.0 specifications
standard_request = ct.c_int
(
# Request status of the specific recipient
LIBUSB_REQUEST_GET_STATUS,
# Clear or disable a specific feature
LIBUSB_REQUEST_CLEAR_FEATURE,
# 0x02 is reserved
# Set or enable a specific feature
LIBUSB_REQUEST_SET_FEATURE,
# 0x04 is reserved
# Set device address for all future accesses
LIBUSB_REQUEST_SET_ADDRESS,
# Get the specified descriptor
LIBUSB_REQUEST_GET_DESCRIPTOR,
# Used to update existing descriptors or add new descriptors
LIBUSB_REQUEST_SET_DESCRIPTOR,
# Get the current device configuration value
LIBUSB_REQUEST_GET_CONFIGURATION,
# Set device configuration
LIBUSB_REQUEST_SET_CONFIGURATION,
# Return the selected alternate setting for the specified interface
LIBUSB_REQUEST_GET_INTERFACE,
# Select an alternate interface for the specified interface
LIBUSB_REQUEST_SET_INTERFACE,
# Set then report an endpoint's synchronization frame
LIBUSB_REQUEST_SYNCH_FRAME,
# Sets both the U1 and U2 Exit Latency
LIBUSB_REQUEST_SET_SEL,
# Delay from the time a host transmits a packet to the time it is
# received by the device.
LIBUSB_SET_ISOCH_DELAY,
) = (0x00, 0x01, 0x03, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x30, 0x31)
# \ingroup libusb::misc
# Request type bits of the
# \ref libusb.control_setup::bmRequestType "bmRequestType" field in control
# transfers.
request_type = ct.c_int
(
# Standard
LIBUSB_REQUEST_TYPE_STANDARD,
# Class
LIBUSB_REQUEST_TYPE_CLASS,
# Vendor
LIBUSB_REQUEST_TYPE_VENDOR,
# Reserved
LIBUSB_REQUEST_TYPE_RESERVED
) = (0x00 << 5, 0x01 << 5, 0x02 << 5, 0x03 << 5)
# \ingroup libusb::misc
# Recipient bits of the
# \ref libusb.control_setup::bmRequestType "bmRequestType" field in control
# transfers. Values 4 through 31 are reserved.
request_recipient = ct.c_int
(
# Device
LIBUSB_RECIPIENT_DEVICE,
# Interface
LIBUSB_RECIPIENT_INTERFACE,
# Endpoint
LIBUSB_RECIPIENT_ENDPOINT,
# Other
LIBUSB_RECIPIENT_OTHER,
) = (0x00, 0x01, 0x02, 0x03)
LIBUSB_ISO_SYNC_TYPE_MASK = 0x0c
# \ingroup libusb::desc
# Synchronization type for isochronous endpoints. Values for bits 2:3 of the
# \ref libusb.endpoint_descriptor::bmAttributes "bmAttributes" field in
# libusb.endpoint_descriptor.
iso_sync_type = ct.c_int
(
# No synchronization
LIBUSB_ISO_SYNC_TYPE_NONE,
# Asynchronous
LIBUSB_ISO_SYNC_TYPE_ASYNC,
# Adaptive
LIBUSB_ISO_SYNC_TYPE_ADAPTIVE,
# Synchronous
LIBUSB_ISO_SYNC_TYPE_SYNC
) = (0, 1, 2, 3)
LIBUSB_ISO_USAGE_TYPE_MASK = 0x30
# \ingroup libusb::desc
# Usage type for isochronous endpoints. Values for bits 4:5 of the
# \ref libusb.endpoint_descriptor::bmAttributes "bmAttributes" field in
# libusb.endpoint_descriptor.
iso_usage_type = ct.c_int
(
# Data endpoint
LIBUSB_ISO_USAGE_TYPE_DATA,
# Feedback endpoint
LIBUSB_ISO_USAGE_TYPE_FEEDBACK,
# Implicit feedback Data endpoint
LIBUSB_ISO_USAGE_TYPE_IMPLICIT,
) = (0x0, 0x1, 0x2)
# \ingroup libusb::desc
# Supported speeds (wSpeedSupported) bitfield. Indicates what
# speeds the device supports.
supported_speed = ct.c_int
(
# Low speed operation supported (1.5MBit/s).
LIBUSB_LOW_SPEED_OPERATION,
# Full speed operation supported (12MBit/s).
LIBUSB_FULL_SPEED_OPERATION,
# High speed operation supported (480MBit/s).
LIBUSB_HIGH_SPEED_OPERATION,
# Superspeed operation supported (5000MBit/s).
LIBUSB_SUPER_SPEED_OPERATION,
) = (1 << 0, 1 << 1, 1 << 2, 1 << 3)
# \ingroup libusb::desc
# Masks for the bits of the
# \ref libusb.usb_2_0_extension_descriptor::bmAttributes "bmAttributes" field
# of the USB 2.0 Extension descriptor.
usb_2_0_extension_attributes = ct.c_int
(
# Supports Link Power Management (LPM)
LIBUSB_BM_LPM_SUPPORT,
) = (1 << 1,)
# \ingroup libusb::desc
# Masks for the bits of the
# \ref libusb.ss_usb_device_capability_descriptor::bmAttributes "bmAttributes" field
# field of the SuperSpeed USB Device Capability descriptor.
ss_usb_device_capability_attributes = ct.c_int
(
# Supports Latency Tolerance Messages (LTM)
LIBUSB_BM_LTM_SUPPORT,
) = (1 << 1,)
# \ingroup libusb::desc
# USB capability types
bos_type = ct.c_int
(
# Wireless USB device capability
LIBUSB_BT_WIRELESS_USB_DEVICE_CAPABILITY,
# USB 2.0 extensions
LIBUSB_BT_USB_2_0_EXTENSION,
# SuperSpeed USB device capability
LIBUSB_BT_SS_USB_DEVICE_CAPABILITY,
# Container ID type
LIBUSB_BT_CONTAINER_ID,
) = (0x01, 0x02, 0x03, 0x04)
# \ingroup libusb::desc
# A structure representing the standard USB device descriptor. This
# descriptor is documented in section 9.6.1 of the USB 3.0 specification.
# All multiple-byte fields are represented in host-endian format.
class device_descriptor(ct.Structure):
_fields_ = [
# Size of this descriptor (in bytes)
("bLength", ct.c_uint8),
# Descriptor type. Will have value
# \ref libusb.descriptor_type::LIBUSB_DT_DEVICE LIBUSB_DT_DEVICE in this
# context.
("bDescriptorType", ct.c_uint8),
# USB specification release number in binary-coded decimal. A value of
# 0x0200 indicates USB 2.0, 0x0110 indicates USB 1.1, etc.
("bcdUSB", ct.c_uint16),
# USB-IF class code for the device. See \ref libusb.class_code.
("bDeviceClass", ct.c_uint8),
# USB-IF subclass code for the device, qualified by the bDeviceClass
# value
("bDeviceSubClass", ct.c_uint8),
# USB-IF protocol code for the device, qualified by the bDeviceClass and
# bDeviceSubClass values
("bDeviceProtocol", ct.c_uint8),
# Maximum packet size for endpoint 0
("bMaxPacketSize0", ct.c_uint8),
# USB-IF vendor ID
("idVendor", ct.c_uint16),
# USB-IF product ID
("idProduct", ct.c_uint16),
# Device release number in binary-coded decimal
("bcdDevice", ct.c_uint16),
# Index of string descriptor describing manufacturer
("iManufacturer", ct.c_uint8),
# Index of string descriptor describing product
("iProduct", ct.c_uint8),
# Index of string descriptor containing device serial number
("iSerialNumber", ct.c_uint8),
# Number of possible configurations
("bNumConfigurations", ct.c_uint8),
]
# \ingroup libusb::desc
# A structure representing the standard USB endpoint descriptor. This
# descriptor is documented in section 9.6.6 of the USB 3.0 specification.
# All multiple-byte fields are represented in host-endian format.
class endpoint_descriptor(ct.Structure):
_fields_ = [
# Size of this descriptor (in bytes)
("bLength", ct.c_uint8),
# Descriptor type. Will have value
# \ref libusb.descriptor_type::LIBUSB_DT_ENDPOINT LIBUSB_DT_ENDPOINT in
# this context.
("bDescriptorType", ct.c_uint8),
# The address of the endpoint described by this descriptor. Bits 0:3 are
# the endpoint number. Bits 4:6 are reserved. Bit 7 indicates direction,
# see \ref libusb.endpoint_direction.
("bEndpointAddress", ct.c_uint8),
# Attributes which apply to the endpoint when it is configured using
# the bConfigurationValue. Bits 0:1 determine the transfer type and
# correspond to \ref libusb.endpoint_transfer_type. Bits 2:3 are only used
# for isochronous endpoints and correspond to \ref libusb.iso_sync_type.
# Bits 4:5 are also only used for isochronous endpoints and correspond to
# \ref libusb.iso_usage_type. Bits 6:7 are reserved.
("bmAttributes", ct.c_uint8),
# Maximum packet size this endpoint is capable of sending/receiving.
("wMaxPacketSize", ct.c_uint16),
# Interval for polling endpoint for data transfers.
("bInterval", ct.c_uint8),
# For audio devices only: the rate at which synchronization feedback
# is provided.
("bRefresh", ct.c_uint8),
# For audio devices only: the address if the synch endpoint
("bSynchAddress", ct.c_uint8),
# Extra descriptors. If libusb encounters unknown endpoint descriptors,
# it will store them here, should you wish to parse them.
("extra", ct.POINTER(ct.c_ubyte)),
# Length of the extra descriptors, in bytes. Must be non-negative.
("extra_length", ct.c_int),
]
# \ingroup libusb::desc
# A structure representing the standard USB interface descriptor. This
# descriptor is documented in section 9.6.5 of the USB 3.0 specification.
# All multiple-byte fields are represented in host-endian format.
class interface_descriptor(ct.Structure):
_fields_ = [
# Size of this descriptor (in bytes)
("bLength", ct.c_uint8),
# Descriptor type. Will have value
# \ref libusb.descriptor_type::LIBUSB_DT_INTERFACE LIBUSB_DT_INTERFACE
# in this context.
("bDescriptorType", ct.c_uint8),
# Number of this interface
("bInterfaceNumber", ct.c_uint8),
# Value used to select this alternate setting for this interface
("bAlternateSetting", ct.c_uint8),
# Number of endpoints used by this interface (excluding the control
# endpoint).
("bNumEndpoints", ct.c_uint8),
# USB-IF class code for this interface. See \ref libusb.class_code.
("bInterfaceClass", ct.c_uint8),
# USB-IF subclass code for this interface, qualified by the
# bInterfaceClass value
("bInterfaceSubClass", ct.c_uint8),
# USB-IF protocol code for this interface, qualified by the
# bInterfaceClass and bInterfaceSubClass values
("bInterfaceProtocol", ct.c_uint8),
# Index of string descriptor describing this interface
("iInterface", ct.c_uint8),
# Array of endpoint descriptors. This length of this array is determined
# by the bNumEndpoints field.
("endpoint", ct.POINTER(endpoint_descriptor)),
# Extra descriptors. If libusb encounters unknown interface descriptors,
# it will store them here, should you wish to parse them.
("extra", ct.POINTER(ct.c_ubyte)),
# Length of the extra descriptors, in bytes. Must be non-negative.
("extra_length", ct.c_int),
]
# \ingroup libusb::desc
# A collection of alternate settings for a particular USB interface.
class interface(ct.Structure):
_fields_ = [
# Array of interface descriptors. The length of this array is determined
# by the num_altsetting field.
("altsetting", ct.POINTER(interface_descriptor)),
# The number of alternate settings that belong to this interface.
# Must be non-negative.
("num_altsetting", ct.c_int),
]
# \ingroup libusb::desc
# A structure representing the standard USB configuration descriptor. This
# descriptor is documented in section 9.6.3 of the USB 3.0 specification.
# All multiple-byte fields are represented in host-endian format.
class config_descriptor(ct.Structure):
_fields_ = [
# Size of this descriptor (in bytes)
("bLength", ct.c_uint8),
# Descriptor type. Will have value
# \ref libusb.descriptor_type::LIBUSB_DT_CONFIG LIBUSB_DT_CONFIG
# in this context.
("bDescriptorType", ct.c_uint8),
# Total length of data returned for this configuration
("wTotalLength", ct.c_uint16),
# Number of interfaces supported by this configuration
("bNumInterfaces", ct.c_uint8),
# Identifier value for this configuration
("bConfigurationValue", ct.c_uint8),
# Index of string descriptor describing this configuration
("iConfiguration", ct.c_uint8),
# Configuration characteristics
("bmAttributes", ct.c_uint8),
# Maximum power consumption of the USB device from this bus in this
# configuration when the device is fully operation. Expressed in units
# of 2 mA when the device is operating in high-speed mode and in units
# of 8 mA when the device is operating in super-speed mode.
("MaxPower", ct.c_uint8),
# Array of interfaces supported by this configuration. The length of
# this array is determined by the bNumInterfaces field.
("interface", ct.POINTER(interface)),
# Extra descriptors. If libusb encounters unknown configuration
# descriptors, it will store them here, should you wish to parse them.
("extra", ct.POINTER(ct.c_ubyte)),
# Length of the extra descriptors, in bytes. Must be non-negative.
("extra_length", ct.c_int),
]
# \ingroup libusb::desc
# A structure representing the superspeed endpoint companion
# descriptor. This descriptor is documented in section 9.6.7 of
# the USB 3.0 specification. All multiple-byte fields are represented in
# host-endian format.
class ss_endpoint_companion_descriptor(ct.Structure):
_fields_ = [
# Size of this descriptor (in bytes)
("bLength", ct.c_uint8),
# Descriptor type. Will have value
# \ref libusb.descriptor_type::LIBUSB_DT_SS_ENDPOINT_COMPANION in
# this context.
("bDescriptorType", ct.c_uint8),
# The maximum number of packets the endpoint can send or
# receive as part of a burst.
("bMaxBurst", ct.c_uint8),
# In bulk EP: bits 4:0 represents the maximum number of
# streams the EP supports. In isochronous EP: bits 1:0
# represents the Mult - a zero based value that determines
# the maximum number of packets within a service interval
("bmAttributes", ct.c_uint8),
# The total number of bytes this EP will transfer every
# service interval. Valid only for periodic EPs.
("wBytesPerInterval", ct.c_uint16),
]
# \ingroup libusb::desc
# A generic representation of a BOS Device Capability descriptor. It is
# advised to check bDevCapabilityType and call the matching
# libusb.get_*_descriptor function to get a structure fully matching the type.
class bos_dev_capability_descriptor(ct.Structure):
_fields_ = [
# Size of this descriptor (in bytes)
("bLength", ct.c_uint8),
# Descriptor type. Will have value
# \ref libusb.descriptor_type::LIBUSB_DT_DEVICE_CAPABILITY
# LIBUSB_DT_DEVICE_CAPABILITY in this context.
("bDescriptorType", ct.c_uint8),
# Device Capability type
("bDevCapabilityType", ct.c_uint8),
# Device Capability data (bLength - 3 bytes)
("dev_capability_data", (ct.c_uint8 * 0)),
]
# \ingroup libusb::desc
# A structure representing the Binary Device Object Store (BOS) descriptor.
# This descriptor is documented in section 9.6.2 of the USB 3.0 specification.
# All multiple-byte fields are represented in host-endian format.
class bos_descriptor(ct.Structure):
_fields_ = [
# Size of this descriptor (in bytes)
("bLength", ct.c_uint8),
# Descriptor type. Will have value
# \ref libusb.descriptor_type::LIBUSB_DT_BOS LIBUSB_DT_BOS
# in this context.
("bDescriptorType", ct.c_uint8),
# Length of this descriptor and all of its sub descriptors
("wTotalLength", ct.c_uint16),
# The number of separate device capability descriptors in
# the BOS
("bNumDeviceCaps", ct.c_uint8),
# bNumDeviceCap Device Capability Descriptors
("dev_capability", (ct.POINTER(bos_dev_capability_descriptor) * 0)),
]
# \ingroup libusb::desc
# A structure representing the USB 2.0 Extension descriptor
# This descriptor is documented in section 9.6.2.1 of the USB 3.0 specification.
# All multiple-byte fields are represented in host-endian format.
class usb_2_0_extension_descriptor(ct.Structure):
_fields_ = [
# Size of this descriptor (in bytes)
("bLength", ct.c_uint8),
# Descriptor type. Will have value
# \ref libusb.descriptor_type::LIBUSB_DT_DEVICE_CAPABILITY
# LIBUSB_DT_DEVICE_CAPABILITY in this context.
("bDescriptorType", ct.c_uint8),
# Capability type. Will have value
# \ref libusb.bos_type::LIBUSB_BT_USB_2_0_EXTENSION
# LIBUSB_BT_USB_2_0_EXTENSION in this context.
("bDevCapabilityType", ct.c_uint8),
# Bitmap encoding of supported device level features.
# A value of one in a bit location indicates a feature is
# supported; a value of zero indicates it is not supported.
# See \ref libusb.usb_2_0_extension_attributes.
("bmAttributes", ct.c_uint32),
]
# \ingroup libusb::desc
# A structure representing the SuperSpeed USB Device Capability descriptor
# This descriptor is documented in section 9.6.2.2 of the USB 3.0 specification.
# All multiple-byte fields are represented in host-endian format.
class ss_usb_device_capability_descriptor(ct.Structure):
_fields_ = [
# Size of this descriptor (in bytes)
("bLength", ct.c_uint8),
# Descriptor type. Will have value
# \ref libusb.descriptor_type::LIBUSB_DT_DEVICE_CAPABILITY
# LIBUSB_DT_DEVICE_CAPABILITY in this context.
("bDescriptorType", ct.c_uint8),
# Capability type. Will have value
# \ref libusb.bos_type::LIBUSB_BT_SS_USB_DEVICE_CAPABILITY
# LIBUSB_BT_SS_USB_DEVICE_CAPABILITY in this context.
("bDevCapabilityType", ct.c_uint8),
# Bitmap encoding of supported device level features.
# A value of one in a bit location indicates a feature is
# supported; a value of zero indicates it is not supported.
# See \ref libusb.ss_usb_device_capability_attributes.
("bmAttributes", ct.c_uint8),
# Bitmap encoding of the speed supported by this device when
# operating in SuperSpeed mode. See \ref libusb.supported_speed.
("wSpeedSupported", ct.c_uint16),
# The lowest speed at which all the functionality supported
# by the device is available to the user. For example if the
# device supports all its functionality when connected at
# full speed and above then it sets this value to 1.
("bFunctionalitySupport", ct.c_uint8),
# U1 Device Exit Latency.
("bU1DevExitLat", ct.c_uint8),
# U2 Device Exit Latency.
("bU2DevExitLat", ct.c_uint16),
]
# \ingroup libusb::desc
# A structure representing the Container ID descriptor.
# This descriptor is documented in section 9.6.2.3 of the USB 3.0 specification.
# All multiple-byte fields, except UUIDs, are represented in host-endian format.
class container_id_descriptor(ct.Structure):
_fields_ = [
# Size of this descriptor (in bytes)
("bLength", ct.c_uint8),
# Descriptor type. Will have value
# \ref libusb.descriptor_type::LIBUSB_DT_DEVICE_CAPABILITY
# LIBUSB_DT_DEVICE_CAPABILITY in this context.
("bDescriptorType", ct.c_uint8),
# Capability type. Will have value
# \ref libusb.bos_type::LIBUSB_BT_CONTAINER_ID
# LIBUSB_BT_CONTAINER_ID in this context.
("bDevCapabilityType", ct.c_uint8),
# Reserved field
("bReserved", ct.c_uint8),
# 128 bit UUID
("ContainerID", (ct.c_uint8 * 16)),
]
# \ingroup libusb::asyncio
# Setup packet for control transfers.
# if defined(_MSC_VER) || defined(__WATCOMC__)
# pragma pack(push, 1)
# endif
class control_setup(ct.Structure):
_fields_ = [
# Request type. Bits 0:4 determine recipient, see
# \ref libusb.request_recipient. Bits 5:6 determine type, see
# \ref libusb.request_type. Bit 7 determines data transfer direction, see
# \ref libusb.endpoint_direction.
("bmRequestType", ct.c_uint8),
# Request. If the type bits of bmRequestType are equal to
# \ref libusb.request_type::LIBUSB_REQUEST_TYPE_STANDARD
# "LIBUSB_REQUEST_TYPE_STANDARD" then this field refers to
# \ref libusb.standard_request. For other cases, use of this field is
# application-specific.
("bRequest", ct.c_uint8),
# Value. Varies according to request
("wValue", ct.c_uint16),
# Index. Varies according to request, typically used to pass an index
# or offset
("wIndex", ct.c_uint16),
# Number of bytes to transfer
("wLength", ct.c_uint16),
]
# if defined(_MSC_VER) || defined(__WATCOMC__)
# pragma pack(pop)
# endif
LIBUSB_CONTROL_SETUP_SIZE = ct.sizeof(control_setup)
### libusb ###
# \ingroup libusb::lib
# Structure providing the version of the libusb runtime
class version(ct.Structure):
_fields_ = [
# Library major version.
("major", ct.c_uint16),
# Library minor version.
("minor", ct.c_uint16),
# Library micro version.
("micro", ct.c_uint16),
# Library nano version.
("nano", ct.c_uint16),
# Library release candidate suffix string, e.g. "-rc4".
("rc", ct.c_char_p),
# For ABI compatibility only.
("describe", ct.c_char_p),
]
# \ingroup libusb::lib
# Structure representing a libusb session. The concept of individual libusb
# sessions allows for your program to use two libraries (or dynamically
# load two modules) which both independently use libusb. This will prevent
# interference between the individual libusb users - for example
# libusb.set_option() will not affect the other user of the library, and
# libusb.exit() will not destroy resources that the other user is still
# using.
#
# Sessions are created by libusb.init() and destroyed through libusb.exit().
# If your application is guaranteed to only ever include a single libusb
# user (i.e. you), you do not have to worry about contexts: pass NULL in
# every function call where a context is required, and the default context
# will be used. Note that libusb.set_option(NULL, ...) is special, and adds
# an option to a list of default options for new contexts.
#
# For more information, see \ref libusb.contexts.
class context(ct.Structure): pass
# \ingroup libusb::dev
# Structure representing a USB device detected on the system. This is an
# opaque type for which you are only ever provided with a pointer, usually
# originating from libusb.get_device_list() or libusb.hotplug_register_callback().
#
# Certain operations can be performed on a device, but in order to do any
# I/O you will have to first obtain a device handle using libusb.open().
#
# Devices are reference counted with libusb.ref_device() and
# libusb.unref_device(), and are freed when the reference count reaches 0.
# New devices presented by libusb.get_device_list() have a reference count of
# 1, and libusb.free_device_list() can optionally decrease the reference count
# on all devices in the list. libusb.open() adds another reference which is
# later destroyed by libusb.close().
class device(ct.Structure): pass
# \ingroup libusb::dev
# Structure representing a handle on a USB device. This is an opaque type for
# which you are only ever provided with a pointer, usually originating from
# libusb.open().
#
# A device handle is used to perform I/O and other operations. When finished
# with a device handle, you should call libusb.close().
class device_handle(ct.Structure): pass
# \ingroup libusb::dev
# Speed codes. Indicates the speed at which the device is operating.
speed = ct.c_int
(
# The OS doesn't report or know the device speed.
LIBUSB_SPEED_UNKNOWN,
# The device is operating at low speed (1.5MBit/s).
LIBUSB_SPEED_LOW,
# The device is operating at full speed (12MBit/s).
LIBUSB_SPEED_FULL,
# The device is operating at high speed (480MBit/s).
LIBUSB_SPEED_HIGH,
# The device is operating at super speed (5000MBit/s).
LIBUSB_SPEED_SUPER,
# The device is operating at super speed plus (10000MBit/s).
LIBUSB_SPEED_SUPER_PLUS,
) = (0, 1, 2, 3, 4, 5)
# \ingroup libusb::misc
# Error codes. Most libusb functions return 0 on success or one of these
# codes on failure.
# You can call libusb.error_name() to retrieve a string representation of an
# error code or libusb.strerror() to get an end-user suitable description of
# an error code.
error = ct.c_int
(
# Success (no error)
LIBUSB_SUCCESS,
# Input/output error
LIBUSB_ERROR_IO,
# Invalid parameter
LIBUSB_ERROR_INVALID_PARAM,
# Access denied (insufficient permissions)
LIBUSB_ERROR_ACCESS,
# No such device (it may have been disconnected)
LIBUSB_ERROR_NO_DEVICE,
# Entity not found
LIBUSB_ERROR_NOT_FOUND,
# Resource busy
LIBUSB_ERROR_BUSY,
# Operation timed out
LIBUSB_ERROR_TIMEOUT,
# Overflow
LIBUSB_ERROR_OVERFLOW,
# Pipe error
LIBUSB_ERROR_PIPE,
# System call interrupted (perhaps due to signal)
LIBUSB_ERROR_INTERRUPTED,
# Insufficient memory
LIBUSB_ERROR_NO_MEM,
# Operation not supported or unimplemented on this platform
LIBUSB_ERROR_NOT_SUPPORTED,
# NB: Remember to update LIBUSB_ERROR_COUNT below as well as the
# message strings in strerror.c when adding new error codes here.
# Other error
LIBUSB_ERROR_OTHER,
) = (0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, -99)
# Total number of error codes in enum libusb.error
LIBUSB_ERROR_COUNT = 14
# \ingroup libusb::asyncio
# Transfer type
transfer_type = ct.c_int
(
# Control transfer
LIBUSB_TRANSFER_TYPE_CONTROL,
# Isochronous transfer
LIBUSB_TRANSFER_TYPE_ISOCHRONOUS,
# Bulk transfer
LIBUSB_TRANSFER_TYPE_BULK,
# Interrupt transfer
LIBUSB_TRANSFER_TYPE_INTERRUPT,
# Bulk stream transfer
LIBUSB_TRANSFER_TYPE_BULK_STREAM,
) = (0, 1, 2, 3, 4)
# \ingroup libusb::asyncio
# Transfer status codes
transfer_status = ct.c_int
(
# Transfer completed without error. Note that this does not indicate
# that the entire amount of requested data was transferred.
LIBUSB_TRANSFER_COMPLETED,
# Transfer failed
LIBUSB_TRANSFER_ERROR,
# Transfer timed out
LIBUSB_TRANSFER_TIMED_OUT,
# Transfer was cancelled
LIBUSB_TRANSFER_CANCELLED,
# For bulk/interrupt endpoints: halt condition detected (endpoint
# stalled). For control endpoints: control request not supported.
LIBUSB_TRANSFER_STALL,
# Device was disconnected
LIBUSB_TRANSFER_NO_DEVICE,
# Device sent more data than requested
LIBUSB_TRANSFER_OVERFLOW,
# NB! Remember to update libusb.error_name()
# when adding new status codes here.
) = range(0, 7)
# \ingroup libusb::asyncio
# libusb.transfer_flags values
transfer_flags = ct.c_int
(
# Report short frames as errors
LIBUSB_TRANSFER_SHORT_NOT_OK,
# Automatically free() transfer buffer during libusb.free_transfer().
# Note that buffers allocated with libusb.dev_mem_alloc() should not
# be attempted freed in this way, since free() is not an appropriate
# way to release such memory.
LIBUSB_TRANSFER_FREE_BUFFER,
# Automatically call libusb.free_transfer() after callback returns.
# If this flag is set, it is illegal to call libusb.free_transfer()
# from your transfer callback, as this will result in a double-free
# when this flag is acted upon.
LIBUSB_TRANSFER_FREE_TRANSFER,
# Terminate transfers that are a multiple of the endpoint's
# wMaxPacketSize with an extra zero length packet. This is useful
# when a device protocol mandates that each logical request is
# terminated by an incomplete packet (i.e. the logical requests are
# not separated by other means).
#
# This flag only affects host-to-device transfers to bulk and interrupt
# endpoints. In other situations, it is ignored.
#
# This flag only affects transfers with a length that is a multiple of
# the endpoint's wMaxPacketSize. On transfers of other lengths, this
# flag has no effect. Therefore, if you are working with a device that
# needs a ZLP whenever the end of the logical request falls on a packet
# boundary, then it is sensible to set this flag on <em>every</em>
# transfer (you do not have to worry about only setting it on transfers
# that end on the boundary).
#
# This flag is currently only supported on Linux.
# On other systems, libusb.submit_transfer() will return
# LIBUSB_ERROR_NOT_SUPPORTED for every transfer where this flag is set.
#
# Available since libusb-1.0.9.
LIBUSB_TRANSFER_ADD_ZERO_PACKET,
) = (1 << 0, 1 << 1, 1 << 2, 1 << 3)
# \ingroup libusb::asyncio
# Isochronous packet descriptor.
class iso_packet_descriptor(ct.Structure):
_fields_ = [
# Length of data to request in this packet
("length", ct.c_uint),
# Amount of data that was actually transferred
("actual_length", ct.c_uint),
# Status code for this packet
("status", transfer_status),
]
class transfer(ct.Structure): pass
# \ingroup libusb::asyncio
# Asynchronous transfer callback function type. When submitting asynchronous
# transfers, you pass a pointer to a callback function of this type via the
# \ref libusb.transfer::callback "callback" member of the libusb.transfer
# structure. libusb will call this function later, when the transfer has
# completed or failed. See \ref libusb::asyncio for more information.
# :param transfer: The libusb.transfer struct the callback function is being
# notified about.
transfer_cb_fn = CFUNC(None, ct.POINTER(transfer))
# \ingroup libusb::asyncio
# The generic USB transfer structure. The user populates this structure and
# then submits it in order to request a transfer. After the transfer has
# completed, the library populates the transfer with the results and passes
# it back to the user.
transfer._fields_ = [
# Handle of the device that this transfer will be submitted to
("dev_handle", ct.POINTER(device_handle)),
# A bitwise OR combination of \ref libusb.transfer_flags.
("flags", ct.c_uint8),
# Address of the endpoint where this transfer will be sent.
("endpoint", ct.c_ubyte),
# Type of the transfer from \ref libusb.transfer_type
("type", ct.c_ubyte),
# Timeout for this transfer in milliseconds. A value of 0 indicates no
# timeout.
("timeout", ct.c_uint),
# The status of the transfer. Read-only, and only for use within
# transfer callback function.
#
# If this is an isochronous transfer, this field may read COMPLETED even
# if there were errors in the frames. Use the
# \ref libusb.iso_packet_descriptor::status "status" field in each packet
# to determine if errors occurred.
("status", transfer_status),
# Length of the data buffer. Must be non-negative.
("length", ct.c_int),
# Actual length of data that was transferred. Read-only, and only for
# use within transfer callback function. Not valid for isochronous
# endpoint transfers.
("actual_length", ct.c_int),
# Callback function. This will be invoked when the transfer completes,
# fails, or is cancelled.
("callback", transfer_cb_fn),
# User context data. Useful for associating specific data to a transfer
# that can be accessed from within the callback function.
#
# This field may be set manually or is taken as the `user_data` parameter
# of the following functions:
# - libusb.fill_bulk_transfer()
# - libusb.fill_bulk_stream_transfer()
# - libusb.fill_control_transfer()
# - libusb.fill_interrupt_transfer()
# - libusb.fill_iso_transfer()
("user_data", ct.c_void_p),
# Data buffer
("buffer", ct.POINTER(ct.c_ubyte)),
# Number of isochronous packets. Only used for I/O with isochronous
# endpoints. Must be non-negative.
("num_iso_packets", ct.c_int),
# Isochronous packet descriptors, for isochronous transfers only.
("iso_packet_desc", (iso_packet_descriptor * 0)),
]
# \ingroup libusb::misc
# Capabilities supported by an instance of libusb on the current running
# platform. Test if the loaded library supports a given capability by calling
# \ref libusb.has_capability().
capability = ct.c_int
(
# The libusb.has_capability() API is available.
LIBUSB_CAP_HAS_CAPABILITY,
# Hotplug support is available on this platform.
LIBUSB_CAP_HAS_HOTPLUG,
# The library can access HID devices without requiring user intervention.
# Note that before being able to actually access an HID device, you may
# still have to call additional libusb functions such as
# \ref libusb.detach_kernel_driver().
LIBUSB_CAP_HAS_HID_ACCESS,
# The library supports detaching of the default USB driver, using
# \ref libusb.detach_kernel_driver(), if one is set by the OS kernel
LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER,
) = (0x0000, 0x0001, 0x0100, 0x0101)
# \ingroup libusb::lib
# Log message levels.
log_level = ct.c_int
(
# (0) : No messages ever emitted by the library (default)
LIBUSB_LOG_LEVEL_NONE,
# (1) : Error messages are emitted
LIBUSB_LOG_LEVEL_ERROR,
# (2) : Warning and error messages are emitted
LIBUSB_LOG_LEVEL_WARNING,
# (3) : Informational, warning and error messages are emitted
LIBUSB_LOG_LEVEL_INFO,
# (4) : All messages are emitted
LIBUSB_LOG_LEVEL_DEBUG,
) = (0, 1, 2, 3, 4)
# \ingroup libusb::lib
# Log callback mode.
#
# Since version 1.0.23, \ref LIBUSB_API_VERSION >= 0x01000107
#
# \see libusb.set_log_cb()
log_cb_mode = ct.c_int
(
# Callback function handling all log messages.
LIBUSB_LOG_CB_GLOBAL,
# Callback function handling context related log messages.
LIBUSB_LOG_CB_CONTEXT,
) = (1 << 0, 1 << 1)
# \ingroup libusb::lib
# Callback function for handling log messages.
# \param ctx the context which is related to the log message, or NULL if it
# is a global log message
# \param level the log level, see \ref libusb.log_level for a description
# \param str the log message
#
# Since version 1.0.23, \ref LIBUSB_API_VERSION >= 0x01000107
#
# \see libusb.set_log_cb()
log_cb = CFUNC(None, ct.POINTER(context), log_level, ct.c_char_p)
get_version = CFUNC(ct.POINTER(version))(
("libusb_get_version", dll),)
init = CFUNC(ct.c_int,
ct.POINTER(ct.POINTER(context)))(
("libusb_init", dll), (
(1, "ctx"),))
exit = CFUNC(None, # noqa: A001
ct.POINTER(context))(
("libusb_exit", dll), (
(1, "ctx"),))
LIBUSB_DEPRECATED_FOR("set_option")
set_debug = CFUNC(None,
ct.POINTER(context),
ct.c_int)(
("libusb_set_debug", dll), (
(1, "ctx"),
(1, "level")))
try:
set_log_cb = CFUNC(None,
ct.POINTER(context),
log_cb,
ct.c_int)(
("libusb_set_log_cb", dll), (
(1, "ctx"),
(1, "cb"),
(1, "mode")))
except: pass # noqa: E722
has_capability = CFUNC(ct.c_int,
ct.c_uint32)(
("libusb_has_capability", dll), (
(1, "capability"),))
error_name = CFUNC(ct.c_char_p,
ct.c_int)(
("libusb_error_name", dll), (
(1, "errcode"),))
strerror = CFUNC(ct.c_char_p,
ct.c_int)(
("libusb_strerror", dll), (
(1, "errcode"),))
setlocale = CFUNC(ct.c_int,
ct.c_char_p)(
("libusb_setlocale", dll), (
(1, "locale"),))
get_device_list = CFUNC(ct.c_ssize_t,
ct.POINTER(context),
ct.POINTER(ct.POINTER(ct.POINTER(device))))(
("libusb_get_device_list", dll), (
(1, "ctx"),
(1, "list")))
free_device_list = CFUNC(None,
ct.POINTER(ct.POINTER(device)),
ct.c_int)(
("libusb_free_device_list", dll), (
(1, "list"),
(1, "unref_devices")))
ref_device = CFUNC(ct.POINTER(device),
ct.POINTER(device))(
("libusb_ref_device", dll), (
(1, "dev"),))
unref_device = CFUNC(None,
ct.POINTER(device))(
("libusb_unref_device", dll), (
(1, "dev"),))
get_configuration = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.POINTER(ct.c_int))(
("libusb_get_configuration", dll), (
(1, "dev_handle"),
(1, "config")))
get_device_descriptor = CFUNC(ct.c_int,
ct.POINTER(device),
ct.POINTER(device_descriptor))(
("libusb_get_device_descriptor", dll), (
(1, "dev"),
(1, "desc")))
get_active_config_descriptor = CFUNC(ct.c_int,
ct.POINTER(device),
ct.POINTER(ct.POINTER(config_descriptor)))(
("libusb_get_active_config_descriptor", dll), (
(1, "dev"),
(1, "config")))
get_config_descriptor = CFUNC(ct.c_int,
ct.POINTER(device),
ct.c_uint8,
ct.POINTER(ct.POINTER(config_descriptor)))(
("libusb_get_config_descriptor", dll), (
(1, "dev"),
(1, "config_index"),
(1, "config")))
get_config_descriptor_by_value = CFUNC(ct.c_int,
ct.POINTER(device),
ct.c_uint8,
ct.POINTER(ct.POINTER(config_descriptor)))(
("libusb_get_config_descriptor_by_value", dll), (
(1, "dev"),
(1, "bConfigurationValue"),
(1, "config")))
free_config_descriptor = CFUNC(None,
ct.POINTER(config_descriptor))(
("libusb_free_config_descriptor", dll), (
(1, "config"),))
get_ss_endpoint_companion_descriptor = CFUNC(ct.c_int,
ct.POINTER(context),
ct.POINTER(endpoint_descriptor),
ct.POINTER(ct.POINTER(ss_endpoint_companion_descriptor)))(
("libusb_get_ss_endpoint_companion_descriptor", dll), (
(1, "ctx"),
(1, "endpoint"),
(1, "ep_comp")))
free_ss_endpoint_companion_descriptor = CFUNC(None,
ct.POINTER(ss_endpoint_companion_descriptor))(
("libusb_free_ss_endpoint_companion_descriptor", dll), (
(1, "ep_comp"),))
get_bos_descriptor = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.POINTER(ct.POINTER(bos_descriptor)))(
("libusb_get_bos_descriptor", dll), (
(1, "dev_handle"),
(1, "bos")))
free_bos_descriptor = CFUNC(None,
ct.POINTER(bos_descriptor))(
("libusb_free_bos_descriptor", dll), (
(1, "bos"),))
get_usb_2_0_extension_descriptor = CFUNC(ct.c_int,
ct.POINTER(context),
ct.POINTER(bos_dev_capability_descriptor),
ct.POINTER(ct.POINTER(usb_2_0_extension_descriptor)))(
("libusb_get_usb_2_0_extension_descriptor", dll), (
(1, "ctx"),
(1, "dev_cap"),
(1, "usb_2_0_extension")))
free_usb_2_0_extension_descriptor = CFUNC(None,
ct.POINTER(usb_2_0_extension_descriptor))(
("libusb_free_usb_2_0_extension_descriptor", dll), (
(1, "usb_2_0_extension"),))
get_ss_usb_device_capability_descriptor = CFUNC(ct.c_int,
ct.POINTER(context),
ct.POINTER(bos_dev_capability_descriptor),
ct.POINTER(ct.POINTER(ss_usb_device_capability_descriptor)))(
("libusb_get_ss_usb_device_capability_descriptor", dll), (
(1, "ctx"),
(1, "dev_cap"),
(1, "ss_usb_device_cap")))
free_ss_usb_device_capability_descriptor = CFUNC(None,
ct.POINTER(ss_usb_device_capability_descriptor))(
("libusb_free_ss_usb_device_capability_descriptor", dll), (
(1, "ss_usb_device_cap"),))
get_container_id_descriptor = CFUNC(ct.c_int,
ct.POINTER(context),
ct.POINTER(bos_dev_capability_descriptor),
ct.POINTER(ct.POINTER(container_id_descriptor)))(
("libusb_get_container_id_descriptor", dll), (
(1, "ctx"),
(1, "dev_cap"),
(1, "container_id")))
free_container_id_descriptor = CFUNC(None,
ct.POINTER(container_id_descriptor))(
("libusb_free_container_id_descriptor", dll), (
(1, "container_id"),))
get_bus_number = CFUNC(ct.c_uint8,
ct.POINTER(device))(
("libusb_get_bus_number", dll), (
(1, "dev"),))
get_port_number = CFUNC(ct.c_uint8,
ct.POINTER(device))(
("libusb_get_port_number", dll), (
(1, "dev"),))
get_port_numbers = CFUNC(ct.c_int,
ct.POINTER(device),
ct.POINTER(ct.c_uint8),
ct.c_int)(
("libusb_get_port_numbers", dll), (
(1, "dev"),
(1, "port_numbers"),
(1, "port_numbers_len")))
LIBUSB_DEPRECATED_FOR("get_port_numbers")
get_port_path = CFUNC(ct.c_int,
ct.POINTER(context),
ct.POINTER(device),
ct.POINTER(ct.c_uint8),
ct.c_uint8)(
("libusb_get_port_path", dll), (
(1, "ctx"),
(1, "dev"),
(1, "path"),
(1, "path_length")))
get_parent = CFUNC(ct.POINTER(device),
ct.POINTER(device))(
("libusb_get_parent", dll), (
(1, "dev"),))
get_device_address = CFUNC(ct.c_uint8,
ct.POINTER(device))(
("libusb_get_device_address", dll), (
(1, "dev"),))
get_device_speed = CFUNC(ct.c_int,
ct.POINTER(device))(
("libusb_get_device_speed", dll), (
(1, "dev"),))
get_max_packet_size = CFUNC(ct.c_int,
ct.POINTER(device),
ct.c_ubyte)(
("libusb_get_max_packet_size", dll), (
(1, "dev"),
(1, "endpoint")))
get_max_iso_packet_size = CFUNC(ct.c_int,
ct.POINTER(device),
ct.c_ubyte)(
("libusb_get_max_iso_packet_size", dll), (
(1, "dev"),
(1, "endpoint")))
try:
wrap_sys_device = CFUNC(ct.c_int,
ct.POINTER(context),
intptr_t,
ct.POINTER(ct.POINTER(device_handle)))(
("libusb_wrap_sys_device", dll), (
(1, "ctx"),
(1, "sys_dev"),
(1, "dev_handle")))
except: pass # noqa: E722
open = CFUNC(ct.c_int, # noqa: A001
ct.POINTER(device),
ct.POINTER(ct.POINTER(device_handle)))(
("libusb_open", dll), (
(1, "dev"),
(1, "dev_handle")))
close = CFUNC(None,
ct.POINTER(device_handle))(
("libusb_close", dll), (
(1, "dev_handle"),))
get_device = CFUNC(ct.POINTER(device),
ct.POINTER(device_handle))(
("libusb_get_device", dll), (
(1, "dev_handle"),))
set_configuration = CFUNC(ct.c_int,
ct.POINTER(device_handle), ct.c_int)(
("libusb_set_configuration", dll), (
(1, "dev_handle"), (1, "configuration")))
claim_interface = CFUNC(ct.c_int,
ct.POINTER(device_handle), ct.c_int)(
("libusb_claim_interface", dll), (
(1, "dev_handle"), (1, "interface_number")))
release_interface = CFUNC(ct.c_int,
ct.POINTER(device_handle), ct.c_int)(
("libusb_release_interface", dll), (
(1, "dev_handle"), (1, "interface_number")))
open_device_with_vid_pid = CFUNC(ct.POINTER(device_handle),
ct.POINTER(context),
ct.c_uint16,
ct.c_uint16)(
("libusb_open_device_with_vid_pid", dll), (
(1, "ctx"),
(1, "vendor_id"),
(1, "product_id")))
set_interface_alt_setting = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.c_int,
ct.c_int)(
("libusb_set_interface_alt_setting", dll), (
(1, "dev_handle"),
(1, "interface_number"),
(1, "alternate_setting")))
clear_halt = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.c_ubyte)(
("libusb_clear_halt", dll), (
(1, "dev_handle"),
(1, "endpoint")))
reset_device = CFUNC(ct.c_int,
ct.POINTER(device_handle))(
("libusb_reset_device", dll), (
(1, "dev_handle"),))
alloc_streams = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.c_uint32,
ct.POINTER(ct.c_ubyte),
ct.c_int)(
("libusb_alloc_streams", dll), (
(1, "dev_handle"),
(1, "num_streams"),
(1, "endpoints"),
(1, "num_endpoints")))
free_streams = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.POINTER(ct.c_ubyte),
ct.c_int)(
("libusb_free_streams", dll), (
(1, "dev_handle"),
(1, "endpoints"),
(1, "num_endpoints")))
dev_mem_alloc = CFUNC(ct.POINTER(ct.c_ubyte),
ct.POINTER(device_handle),
ct.c_size_t)(
("libusb_dev_mem_alloc", dll), (
(1, "dev_handle"),
(1, "length")))
dev_mem_free = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.POINTER(ct.c_ubyte),
ct.c_size_t)(
("libusb_dev_mem_free", dll), (
(1, "dev_handle"),
(1, "buffer"),
(1, "length")))
kernel_driver_active = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.c_int)(
("libusb_kernel_driver_active", dll), (
(1, "dev_handle"),
(1, "interface_number")))
detach_kernel_driver = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.c_int)(
("libusb_detach_kernel_driver", dll), (
(1, "dev_handle"),
(1, "interface_number")))
attach_kernel_driver = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.c_int)(
("libusb_attach_kernel_driver", dll), (
(1, "dev_handle"),
(1, "interface_number")))
set_auto_detach_kernel_driver = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.c_int)(
("libusb_set_auto_detach_kernel_driver", dll), (
(1, "dev_handle"),
(1, "enable")))
## async I/O ##
# \ingroup libusb::asyncio
# Get the data section of a control transfer. This convenience function is here
# to remind you that the data does not start until 8 bytes into the actual
# buffer, as the setup packet comes first.
#
# Calling this function only makes sense from a transfer callback function,
# or situations where you have already allocated a suitably sized buffer at
# transfer->buffer.
#
# :param transfer: a transfer
# :returns: pointer to the first byte of the data section
# static inline
# @CFUNC(ct.POINTER(ct.c_ubyte), ct.POINTER(transfer))
def control_transfer_get_data(transfer):
transfer = transfer[0]
return ct.cast(transfer.buffer + LIBUSB_CONTROL_SETUP_SIZE, ct.POINTER(ct.c_ubyte))
# \ingroup libusb::asyncio
# Get the control setup packet of a control transfer. This convenience
# function is here to remind you that the control setup occupies the first
# 8 bytes of the transfer data buffer.
#
# Calling this function only makes sense from a transfer callback function,
# or situations where you have already allocated a suitably sized buffer at
# transfer->buffer.
#
# :param transfer: a transfer
# :returns: a casted pointer to the start of the transfer data buffer
# static inline
# @CFUNC(ct.POINTER(control_setup), ct.POINTER(transfer))
def control_transfer_get_setup(transfer):
transfer = transfer[0]
return ct.cast(transfer.buffer, ct.POINTER(control_setup))
# \ingroup libusb::asyncio
# Helper function to populate the setup packet (first 8 bytes of the data
# buffer) for a control transfer. The wIndex, wValue and wLength values should
# be given in host-endian byte order.
#
# :param buffer: buffer to output the setup packet into
# This pointer must be aligned to at least 2 bytes boundary.
# :param bmRequestType: see the
# \ref libusb.control_setup::bmRequestType "bmRequestType" field of
# \ref libusb.control_setup
# :param bRequest: see the
# \ref libusb.control_setup::bRequest "bRequest" field of
# \ref libusb.control_setup
# :param wValue: see the
# \ref libusb.control_setup::wValue "wValue" field of
# \ref libusb.control_setup
# :param wIndex: see the
# \ref libusb.control_setup::wIndex "wIndex" field of
# \ref libusb.control_setup
# :param wLength: see the
# \ref libusb.control_setup::wLength "wLength" field of
# \ref libusb.control_setup
# static inline
@CFUNC(None,
ct.POINTER(ct.c_ubyte), ct.c_uint8, ct.c_uint8, ct.c_uint16, ct.c_uint16, ct.c_uint16)
def fill_control_setup(buffer, bmRequestType, bRequest, wValue, wIndex, wLength):
setup = ct.cast(buffer, ct.POINTER(control_setup))[0]
setup.bmRequestType = bmRequestType
setup.bRequest = bRequest
setup.wValue = cpu_to_le16(wValue)
setup.wIndex = cpu_to_le16(wIndex)
setup.wLength = cpu_to_le16(wLength)
alloc_transfer = CFUNC(ct.POINTER(transfer),
ct.c_int)(
("libusb_alloc_transfer", dll), (
(1, "iso_packets"),))
submit_transfer = CFUNC(ct.c_int,
ct.POINTER(transfer))(
("libusb_submit_transfer", dll), (
(1, "transfer"),))
cancel_transfer = CFUNC(ct.c_int,
ct.POINTER(transfer))(
("libusb_cancel_transfer", dll), (
(1, "transfer"),))
free_transfer = CFUNC(None,
ct.POINTER(transfer))(
("libusb_free_transfer", dll), (
(1, "transfer"),))
transfer_get_stream_id = CFUNC(ct.c_uint32,
ct.POINTER(transfer))(
("libusb_transfer_get_stream_id", dll), (
(1, "transfer"),))
transfer_set_stream_id = CFUNC(None,
ct.POINTER(transfer), ct.c_uint32)(
("libusb_transfer_set_stream_id", dll), (
(1, "transfer"), (1, "stream_id")))
# \ingroup libusb::asyncio
# Helper function to populate the required \ref libusb.transfer fields
# for a control transfer.
#
# If you pass a transfer buffer to this function, the first 8 bytes will
# be interpreted as a control setup packet, and the wLength field will be
# used to automatically populate the \ref libusb.transfer::length "length"
# field of the transfer. Therefore the recommended approach is:
# -# Allocate a suitably sized data buffer (including space for control setup)
# -# Call libusb.fill_control_setup()
# -# If this is a host-to-device transfer with a data stage, put the data
# in place after the setup packet
# -# Call this function
# -# Call libusb.submit_transfer()
#
# It is also legal to pass a NULL buffer to this function, in which case this
# function will not attempt to populate the length field. Remember that you
# must then populate the buffer and length fields later.
#
# :param transfer: the transfer to populate
# :param dev_handle: handle of the device that will handle the transfer
# :param buffer: data buffer. If provided, this function will interpret the
# first 8 bytes as a setup packet and infer the transfer length from that.
# This pointer must be aligned to at least 2 bytes boundary.
# :param callback: callback function to be invoked on transfer completion
# :param user_data: user data to pass to callback function
# :param timeout: timeout for the transfer in milliseconds
# static inline
@CFUNC(None,
ct.POINTER(transfer), ct.POINTER(device_handle),
ct.POINTER(ct.c_ubyte), transfer_cb_fn, ct.c_void_p, ct.c_uint)
def fill_control_transfer(transfer, dev_handle, buffer, callback, user_data, timeout):
transfer = transfer[0]
setup_ptr = ct.cast(buffer, ct.POINTER(control_setup))
transfer.dev_handle = dev_handle
transfer.endpoint = 0
transfer.type = LIBUSB_TRANSFER_TYPE_CONTROL
transfer.timeout = timeout
transfer.buffer = buffer
if setup_ptr:
transfer.length = ct.c_int(LIBUSB_CONTROL_SETUP_SIZE + le16_to_cpu(setup_ptr[0].wLength))
transfer.user_data = user_data
transfer.callback = callback
# \ingroup libusb::asyncio
# Helper function to populate the required \ref libusb.transfer fields
# for a bulk transfer.
#
# :param transfer: the transfer to populate
# :param dev_handle: handle of the device that will handle the transfer
# :param endpoint: address of the endpoint where this transfer will be sent
# :param buffer: data buffer
# :param length: length of data buffer
# :param callback: callback function to be invoked on transfer completion
# :param user_data: user data to pass to callback function
# :param timeout: timeout for the transfer in milliseconds
# static inline
@CFUNC(None,
ct.POINTER(transfer), ct.POINTER(device_handle), ct.c_ubyte,
ct.POINTER(ct.c_ubyte), ct.c_int, transfer_cb_fn, ct.c_void_p, ct.c_uint)
def fill_bulk_transfer(transfer, dev_handle, endpoint,
buffer, length, callback, user_data, timeout):
transfer = transfer[0]
transfer.dev_handle = dev_handle
transfer.endpoint = endpoint
transfer.type = LIBUSB_TRANSFER_TYPE_BULK
transfer.timeout = timeout
transfer.buffer = buffer
transfer.length = length
transfer.user_data = user_data
transfer.callback = callback
# \ingroup libusb::asyncio
# Helper function to populate the required \ref libusb.transfer fields
# for a bulk transfer using bulk streams.
#
# Since version 1.0.19, \ref LIBUSB_API_VERSION >= 0x01000103
#
# :param transfer: the transfer to populate
# :param dev_handle: handle of the device that will handle the transfer
# :param endpoint: address of the endpoint where this transfer will be sent
# :param stream_id: bulk stream id for this transfer
# :param buffer: data buffer
# :param length: length of data buffer
# :param callback: callback function to be invoked on transfer completion
# :param user_data: user data to pass to callback function
# :param timeout: timeout for the transfer in milliseconds
# static inline
@CFUNC(None,
ct.POINTER(transfer), ct.POINTER(device_handle), ct.c_ubyte, ct.c_uint32,
ct.POINTER(ct.c_ubyte), ct.c_int, transfer_cb_fn, ct.c_void_p, ct.c_uint)
def fill_bulk_stream_transfer(transfer, dev_handle, endpoint, stream_id,
buffer, length, callback, user_data, timeout):
fill_bulk_transfer(transfer, dev_handle, endpoint,
buffer, length, callback, user_data, timeout)
transfer[0].type = LIBUSB_TRANSFER_TYPE_BULK_STREAM
transfer_set_stream_id(transfer, stream_id)
# \ingroup libusb::asyncio
# Helper function to populate the required \ref libusb.transfer fields
# for an interrupt transfer.
#
# :param transfer: the transfer to populate
# :param dev_handle: handle of the device that will handle the transfer
# :param endpoint: address of the endpoint where this transfer will be sent
# :param buffer: data buffer
# :param length: length of data buffer
# :param callback: callback function to be invoked on transfer completion
# :param user_data: user data to pass to callback function
# :param timeout: timeout for the transfer in milliseconds
# static inline
@CFUNC(None,
ct.POINTER(transfer), ct.POINTER(device_handle), ct.c_ubyte,
ct.POINTER(ct.c_ubyte), ct.c_int, transfer_cb_fn, ct.c_void_p, ct.c_uint)
def fill_interrupt_transfer(transfer, dev_handle, endpoint,
buffer, length, callback, user_data, timeout):
transfer = transfer[0]
transfer.dev_handle = dev_handle
transfer.endpoint = endpoint
transfer.type = LIBUSB_TRANSFER_TYPE_INTERRUPT
transfer.timeout = timeout
transfer.buffer = buffer
transfer.length = length
transfer.user_data = user_data
transfer.callback = callback
# \ingroup libusb::asyncio
# Helper function to populate the required \ref libusb.transfer fields
# for an isochronous transfer.
#
# :param transfer: the transfer to populate
# :param dev_handle: handle of the device that will handle the transfer
# :param endpoint: address of the endpoint where this transfer will be sent
# :param buffer: data buffer
# :param length: length of data buffer
# :param num_iso_packets: the number of isochronous packets
# :param callback: callback function to be invoked on transfer completion
# :param user_data: user data to pass to callback function
# :param timeout: timeout for the transfer in milliseconds
# static inline
@CFUNC(None,
ct.POINTER(transfer), ct.POINTER(device_handle), ct.c_ubyte,
ct.POINTER(ct.c_ubyte), ct.c_int, ct.c_int, transfer_cb_fn, ct.c_void_p, ct.c_uint)
def fill_iso_transfer(transfer, dev_handle, endpoint,
buffer, length, num_iso_packets, callback, user_data, timeout):
transfer = transfer[0]
transfer.dev_handle = dev_handle
transfer.endpoint = endpoint
transfer.type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS
transfer.timeout = timeout
transfer.buffer = buffer
transfer.length = length
transfer.num_iso_packets = num_iso_packets
transfer.user_data = user_data
transfer.callback = callback
# \ingroup libusb::asyncio
# Convenience function to set the length of all packets in an isochronous
# transfer, based on the num_iso_packets field in the transfer structure.
#
# :param transfer: a transfer
# :param length: the length to set in each isochronous packet descriptor
# \see libusb.get_max_packet_size()
# static inline
@CFUNC(None, ct.POINTER(transfer), ct.c_uint)
def set_iso_packet_lengths(transfer, length):
transfer = transfer[0]
for i in range(transfer.num_iso_packets):
transfer.iso_packet_desc[i].length = length
# \ingroup libusb::asyncio
# Convenience function to locate the position of an isochronous packet
# within the buffer of an isochronous transfer.
#
# This is a thorough function which loops through all preceding packets,
# accumulating their lengths to find the position of the specified packet.
# Typically you will assign equal lengths to each packet in the transfer,
# and hence the above method is sub-optimal. You may wish to use
# libusb.get_iso_packet_buffer_simple() instead.
#
# :param transfer: a transfer
# :param packet: the packet to return the address of
# :returns: the base address of the packet buffer inside the transfer buffer,
# or NULL if the packet does not exist.
# \see libusb.get_iso_packet_buffer_simple()
# static inline
# @CFUNC(ct.POINTER(ct.c_ubyte), ct.POINTER(transfer), ct.c_uint)
def get_iso_packet_buffer(transfer, packet):
packet = packet.value
# oops..slight bug in the API. packet is an unsigned int, but we use
# signed integers almost everywhere else. range-check and convert to
# signed to avoid compiler warnings. FIXME for libusb-2.
if packet > INT_MAX:
return None
transfer = transfer[0]
if packet >= transfer.num_iso_packets:
return None
offset = 0
for i in range(packet):
offset += transfer.iso_packet_desc[i].length
return ct.cast(transfer.buffer + offset, ct.POINTER(ct.c_ubyte))
# \ingroup libusb::asyncio
# Convenience function to locate the position of an isochronous packet
# within the buffer of an isochronous transfer, for transfers where each
# packet is of identical size.
#
# This function relies on the assumption that every packet within the transfer
# is of identical size to the first packet. Calculating the location of
# the packet buffer is then just a simple calculation:
# <tt>buffer + (packet_size# packet)</tt>
#
# Do not use this function on transfers other than those that have identical
# packet lengths for each packet.
#
# :param transfer: a transfer
# :param packet: the packet to return the address of
# :returns: the base address of the packet buffer inside the transfer buffer,
# or NULL if the packet does not exist.
# \see libusb.get_iso_packet_buffer()
# static inline
# @CFUNC(ct.POINTER(ct.c_ubyte), ct.POINTER(transfer), ct.c_uint)
def get_iso_packet_buffer_simple(transfer, packet):
packet = packet.value
# oops..slight bug in the API. packet is an unsigned int, but we use
# signed integers almost everywhere else. range-check and convert to
# signed to avoid compiler warnings. FIXME for libusb-2.
if packet > INT_MAX:
return None
transfer = transfer[0]
if packet >= transfer.num_iso_packets:
return None
return ct.cast(transfer.buffer
+ ct.c_int(transfer.iso_packet_desc[0].length).value * packet,
ct.POINTER(ct.c_ubyte))
## sync I/O ##
control_transfer = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.c_uint8,
ct.c_uint8,
ct.c_uint16,
ct.c_uint16,
ct.POINTER(ct.c_ubyte),
ct.c_uint16,
ct.c_uint)(
("libusb_control_transfer", dll), (
(1, "dev_handle"),
(1, "request_type"),
(1, "bRequest"),
(1, "wValue"),
(1, "wIndex"),
(1, "data"),
(1, "wLength"),
(1, "timeout")))
bulk_transfer = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.c_ubyte,
ct.POINTER(ct.c_ubyte),
ct.c_int,
ct.POINTER(ct.c_int),
ct.c_uint)(
("libusb_bulk_transfer", dll), (
(1, "dev_handle"),
(1, "endpoint"),
(1, "data"),
(1, "length"),
(1, "actual_length"),
(1, "timeout")))
interrupt_transfer = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.c_ubyte,
ct.POINTER(ct.c_ubyte),
ct.c_int,
ct.POINTER(ct.c_int),
ct.c_uint)(
("libusb_interrupt_transfer", dll), (
(1, "dev_handle"),
(1, "endpoint"),
(1, "data"),
(1, "length"),
(1, "actual_length"),
(1, "timeout")))
# \ingroup libusb::desc
# Retrieve a descriptor from the default control pipe.
# This is a convenience function which formulates the appropriate control
# message to retrieve the descriptor.
#
# :param dev_handle: a device handle
# :param desc_type: the descriptor type, see \ref libusb.descriptor_type
# :param desc_index: the index of the descriptor to retrieve
# :param data: output buffer for descriptor
# :param length: size of data buffer
# :returns: number of bytes returned in data, or LIBUSB_ERROR code on failure
# static inline
@CFUNC(ct.c_int,
ct.POINTER(device_handle), ct.c_uint8, ct.c_uint8, ct.POINTER(ct.c_ubyte), ct.c_int)
def get_descriptor(dev_handle, desc_type, desc_index, data, length):
return control_transfer(dev_handle,
LIBUSB_ENDPOINT_IN, LIBUSB_REQUEST_GET_DESCRIPTOR,
ct.c_uint16((desc_type << 8) | desc_index),
0, data, ct.c_uint16(length), 1000)
# \ingroup libusb::desc
# Retrieve a descriptor from a device.
# This is a convenience function which formulates the appropriate control
# message to retrieve the descriptor. The string returned is Unicode, as
# detailed in the USB specifications.
#
# :param dev_handle: a device handle
# :param desc_index: the index of the descriptor to retrieve
# :param langid: the language ID for the string descriptor
# :param data: output buffer for descriptor
# :param length: size of data buffer
# :returns: number of bytes returned in data, or LIBUSB_ERROR code on failure
# \see libusb.get_string_descriptor_ascii()
# static inline
@CFUNC(ct.c_int,
ct.POINTER(device_handle), ct.c_uint8, ct.c_uint16, ct.POINTER(ct.c_ubyte), ct.c_int)
def get_string_descriptor(dev_handle, desc_index, langid, data, length):
return control_transfer(dev_handle,
LIBUSB_ENDPOINT_IN, LIBUSB_REQUEST_GET_DESCRIPTOR,
ct.c_uint16((LIBUSB_DT_STRING << 8) | desc_index),
langid, data, ct.c_uint16(length), 1000)
get_string_descriptor_ascii = CFUNC(ct.c_int,
ct.POINTER(device_handle),
ct.c_uint8,
ct.POINTER(ct.c_ubyte),
ct.c_int)(
("libusb_get_string_descriptor_ascii", dll), (
(1, "dev_handle"),
(1, "desc_index"),
(1, "data"),
(1, "length")))
# polling and timeouts #
try_lock_events = CFUNC(ct.c_int,
ct.POINTER(context))(
("libusb_try_lock_events", dll), (
(1, "ctx"),))
lock_events = CFUNC(None,
ct.POINTER(context))(
("libusb_lock_events", dll), (
(1, "ctx"),))
unlock_events = CFUNC(None,
ct.POINTER(context))(
("libusb_unlock_events", dll), (
(1, "ctx"),))
event_handling_ok = CFUNC(ct.c_int,
ct.POINTER(context))(
("libusb_event_handling_ok", dll), (
(1, "ctx"),))
event_handler_active = CFUNC(ct.c_int,
ct.POINTER(context))(
("libusb_event_handler_active", dll), (
(1, "ctx"),))
interrupt_event_handler = CFUNC(None,
ct.POINTER(context))(
("libusb_interrupt_event_handler", dll), (
(1, "ctx"),))
lock_event_waiters = CFUNC(None,
ct.POINTER(context))(
("libusb_lock_event_waiters", dll), (
(1, "ctx"),))
unlock_event_waiters = CFUNC(None,
ct.POINTER(context))(
("libusb_unlock_event_waiters", dll), (
(1, "ctx"),))
wait_for_event = CFUNC(ct.c_int,
ct.POINTER(context),
ct.POINTER(timeval))(
("libusb_wait_for_event", dll), (
(1, "ctx"),
(1, "tv")))
handle_events_timeout = CFUNC(ct.c_int,
ct.POINTER(context),
ct.POINTER(timeval))(
("libusb_handle_events_timeout", dll), (
(1, "ctx"),
(1, "tv")))
handle_events_timeout_completed = CFUNC(ct.c_int,
ct.POINTER(context),
ct.POINTER(timeval),
ct.POINTER(ct.c_int))(
("libusb_handle_events_timeout_completed", dll), (
(1, "ctx"),
(1, "tv"),
(1, "completed")))
handle_events = CFUNC(ct.c_int,
ct.POINTER(context))(
("libusb_handle_events", dll), (
(1, "ctx"),))
handle_events_completed = CFUNC(ct.c_int,
ct.POINTER(context),
ct.POINTER(ct.c_int))(
("libusb_handle_events_completed", dll), (
(1, "ctx"),
(1, "completed")))
handle_events_locked = CFUNC(ct.c_int,
ct.POINTER(context),
ct.POINTER(timeval))(
("libusb_handle_events_locked", dll), (
(1, "ctx"),
(1, "tv")))
pollfds_handle_timeouts = CFUNC(ct.c_int,
ct.POINTER(context))(
("libusb_pollfds_handle_timeouts", dll), (
(1, "ctx"),))
get_next_timeout = CFUNC(ct.c_int,
ct.POINTER(context),
ct.POINTER(timeval))(
("libusb_get_next_timeout", dll), (
(1, "ctx"),
(1, "tv")))
# \ingroup libusb::poll
# File descriptor for polling
class pollfd(ct.Structure):
_fields_ = [
# Numeric file descriptor
("fd", ct.c_int),
# Event flags to poll for from <poll.h>. POLLIN indicates that you
# should monitor this file descriptor for becoming ready to read from,
# and POLLOUT indicates that you should monitor this file descriptor for
# nonblocking write readiness.
("events", ct.c_short),
]
# \ingroup libusb::poll
# Callback function, invoked when a new file descriptor should be added
# to the set of file descriptors monitored for events.
# :param fd: the new file descriptor
# :param events: events to monitor for, see \ref libusb.pollfd for a
# description
# :param user_data: User data pointer specified in
# libusb.set_pollfd_notifiers() call
# \see libusb.set_pollfd_notifiers()
pollfd_added_cb = CFUNC(None, ct.c_int, ct.c_short, ct.c_void_p)
# \ingroup libusb::poll
# Callback function, invoked when a file descriptor should be removed from
# the set of file descriptors being monitored for events. After returning
# from this callback, do not use that file descriptor again.
# :param fd: the file descriptor to stop monitoring
# :param user_data: User data pointer specified in
# libusb.set_pollfd_notifiers() call
# \see libusb.set_pollfd_notifiers()
pollfd_removed_cb = CFUNC(None, ct.c_int, ct.c_void_p)
get_pollfds = CFUNC(ct.POINTER(ct.POINTER(pollfd)),
ct.POINTER(context))(
("libusb_get_pollfds", dll), (
(1, "ctx"),))
free_pollfds = CFUNC(None,
ct.POINTER(ct.POINTER(pollfd)))(
("libusb_free_pollfds", dll), (
(1, "pollfds"),))
set_pollfd_notifiers = CFUNC(None,
ct.POINTER(context),
pollfd_added_cb,
pollfd_removed_cb,
ct.c_void_p)(
("libusb_set_pollfd_notifiers", dll), (
(1, "ctx"),
(1, "added_cb"),
(1, "removed_cb"),
(1, "user_data")))
# \ingroup libusb::hotplug
# Callback handle.
#
# Callbacks handles are generated by libusb.hotplug_register_callback()
# and can be used to deregister callbacks. Callback handles are unique
# per libusb.context and it is safe to call libusb.hotplug_deregister_callback()
# on an already deregistered callback.
#
# Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102
#
# For more information, see \ref libusb::hotplug.
hotplug_callback_handle = ct.c_int
# \ingroup libusb::hotplug
#
# Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102
#
# Hotplug events
hotplug_event = ct.c_int
(
# A device has been plugged in and is ready to use
LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED,
# A device has left and is no longer available.
# It is the user's responsibility to call libusb.close on any handle associated
# with a disconnected device.
# It is safe to call libusb.get_device_descriptor on a device that has left
LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT,
) = (1 << 0, 1 << 1)
# \ingroup libusb::hotplug
#
# Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102
#
# Hotplug flags
hotplug_flag = ct.c_int
(
# Arm the callback and fire it for all matching currently attached devices.
LIBUSB_HOTPLUG_ENUMERATE,
) = (1 << 0,)
# \ingroup libusb::hotplug
# Convenience macro when not using any flags
LIBUSB_HOTPLUG_NO_FLAGS = 0
# \ingroup libusb::hotplug
# Wildcard matching for hotplug events
LIBUSB_HOTPLUG_MATCH_ANY = ct.c_int(-1)
# \ingroup libusb::hotplug
# Hotplug callback function type. When requesting hotplug event notifications,
# you pass a pointer to a callback function of this type.
#
# This callback may be called by an internal event thread and as such it is
# recommended the callback do minimal processing before returning.
#
# libusb will call this function later, when a matching event had happened on
# a matching device. See \ref libusb::hotplug for more information.
#
# It is safe to call either libusb.hotplug_register_callback() or
# libusb.hotplug_deregister_callback() from within a callback function.
#
# Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102
#
# :param ctx: context of this notification
# :param device: libusb.device this event occurred on
# :param event: event that occurred
# :param user_data: user data provided when this callback was registered
# :returns: bool whether this callback is finished processing events.
# returning 1 will cause this callback to be deregistered
hotplug_callback_fn = CFUNC(ct.c_int,
ct.POINTER(context),
ct.POINTER(device),
hotplug_event,
ct.c_void_p)
# \ingroup libusb::hotplug
# Register a hotplug callback function
#
# Register a callback with the libusb.context. The callback will fire
# when a matching event occurs on a matching device. The callback is
# armed until either it is deregistered with libusb.hotplug_deregister_callback()
# or the supplied callback returns 1 to indicate it is finished processing events.
#
# If the \ref LIBUSB_HOTPLUG_ENUMERATE is passed the callback will be
# called with a \ref LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED for all devices
# already plugged into the machine. Note that libusb modifies its internal
# device list from a separate thread, while calling hotplug callbacks from
# libusb.handle_events(), so it is possible for a device to already be present
# on, or removed from, its internal device list, while the hotplug callbacks
# still need to be dispatched. This means that when using \ref
# LIBUSB_HOTPLUG_ENUMERATE, your callback may be called twice for the arrival
# of the same device, once from libusb.hotplug_register_callback() and once
# from libusb.handle_events(); and/or your callback may be called for the
# removal of a device for which an arrived call was never made.
#
# Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102
#
# :param ctx: context to register this callback with
# :param events: bitwise or of hotplug events that will trigger this callback.
# See \ref libusb.hotplug_event
# :param flags: bitwise or of hotplug flags that affect registration.
# See \ref libusb.hotplug_flag
# :param vendor_id: the vendor id to match or \ref libusb.LIBUSB_HOTPLUG_MATCH_ANY
# :param product_id: the product id to match or \ref libusb.LIBUSB_HOTPLUG_MATCH_ANY
# :param dev_class: the device class to match or \ref libusb.LIBUSB_HOTPLUG_MATCH_ANY
# :param cb_fn: the function to be invoked on a matching event/device
# :param user_data: user data to pass to the callback function
# \param[out] callback_handle pointer to store the handle of the allocated callback (can be NULL)
# :returns: LIBUSB_SUCCESS on success LIBUSB_ERROR code on failure
hotplug_register_callback = CFUNC(ct.c_int,
ct.POINTER(context),
ct.c_int,
ct.c_int,
ct.c_int,
ct.c_int,
ct.c_int,
hotplug_callback_fn,
ct.c_void_p,
ct.POINTER(hotplug_callback_handle))(
("libusb_hotplug_register_callback", dll), (
(1, "ctx"),
(1, "events"),
(1, "flags"),
(1, "vendor_id"),
(1, "product_id"),
(1, "dev_class"),
(1, "cb_fn"),
(1, "user_data"),
(1, "callback_handle")))
# \ingroup libusb::hotplug
# Deregisters a hotplug callback.
#
# Deregister a callback from a libusb.context. This function is safe to call from within
# a hotplug callback.
#
# Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102
#
# :param ctx: context this callback is registered with
# :param callback_handle: the handle of the callback to deregister
hotplug_deregister_callback = CFUNC(None,
ct.POINTER(context),
hotplug_callback_handle)(
("libusb_hotplug_deregister_callback", dll), (
(1, "ctx"),
(1, "callback_handle")))
# \ingroup libusb::hotplug
# Gets the user_data associated with a hotplug callback.
#
# Since version v1.0.24 \ref LIBUSB_API_VERSION >= 0x01000108
#
# :param ctx: context this callback is registered with
# :param callback_handle: the handle of the callback to get the user_data of
try:
hotplug_get_user_data = CFUNC(ct.c_void_p,
ct.POINTER(context),
hotplug_callback_handle)(
("libusb_hotplug_get_user_data", dll), (
(1, "ctx"),
(1, "callback_handle")))
except: pass # noqa: E722
# \ingroup libusb::lib
# Available option values for libusb.set_option().
option = ct.c_int
(
# Set the log message verbosity.
#
# The default level is LIBUSB_LOG_LEVEL_NONE, which means no messages are ever
# printed. If you choose to increase the message verbosity level, ensure
# that your application does not close the stderr file descriptor.
#
# You are advised to use level LIBUSB_LOG_LEVEL_WARNING. libusb is conservative
# with its message logging and most of the time, will only log messages that
# explain error conditions and other oddities. This will help you debug
# your software.
#
# If the LIBUSB_DEBUG environment variable was set when libusb was
# initialized, this function does nothing: the message verbosity is fixed
# to the value in the environment variable.
#
# If libusb was compiled without any message logging, this function does
# nothing: you'll never get any messages.
#
# If libusb was compiled with verbose debug message logging, this function
# does nothing: you'll always get messages from all levels.
#
LIBUSB_OPTION_LOG_LEVEL,
# Use the UsbDk backend for a specific context, if available.
#
# This option should be set immediately after calling libusb.init(), otherwise
# unspecified behavior may occur.
#
# Only valid on Windows.
#
LIBUSB_OPTION_USE_USBDK,
# Do not scan for devices
#
# With this option set, libusb will skip scanning devices in
# libusb.init(). Must be set before calling libusb.init().
#
# Hotplug functionality will also be deactivated.
#
# The option is useful in combination with libusb_wrap_sys_device(),
# which can access a device directly without prior device scanning.
#
# This is typically needed on Android, where access to USB devices
# is limited.
#
# For LIBUSB_API_VERSION 0x01000108 it was called LIBUSB_OPTION_WEAK_AUTHORITY
#
# Only valid on Linux.
#
LIBUSB_OPTION_NO_DEVICE_DISCOVERY,
LIBUSB_OPTION_MAX,
) = (0, 1, 2, 3)
LIBUSB_OPTION_WEAK_AUTHORITY = LIBUSB_OPTION_NO_DEVICE_DISCOVERY
def set_option(ctx, option, *values):
if option == LIBUSB_OPTION_LOG_LEVEL:
if not (LIBUSB_LOG_LEVEL_NONE <= values[0] <= LIBUSB_LOG_LEVEL_DEBUG):
return LIBUSB_ERROR_INVALID_PARAM
set_debug(ctx, values[0])
return LIBUSB_SUCCESS
elif option == LIBUSB_OPTION_USE_USBDK:
return LIBUSB_ERROR_NOT_SUPPORTED
else:
return LIBUSB_ERROR_INVALID_PARAM
# eof
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