/*
* Public libusb header file
- * Copyright (C) 2007-2008 Daniel Drake <dsd@gentoo.org>
- * Copyright (c) 2001 Johannes Erdfelt <johannes@erdfelt.com>
+ * Copyright © 2001 Johannes Erdfelt <johannes@erdfelt.com>
+ * Copyright © 2007-2008 Daniel Drake <dsd@gentoo.org>
+ * Copyright © 2012 Pete Batard <pete@akeo.ie>
+ * Copyright © 2012 Nathan Hjelm <hjelmn@cs.unm.edu>
+ * 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef __LIBUSB_H__
-#define __LIBUSB_H__
+#ifndef LIBUSB_H
+#define LIBUSB_H
+#ifdef _MSC_VER
+/* on MS environments, the inline keyword is available in C++ only */
+#if !defined(__cplusplus)
+#define inline __inline
+#endif
+/* ssize_t is also not available (copy/paste from MinGW) */
+#ifndef _SSIZE_T_DEFINED
+#define _SSIZE_T_DEFINED
+#undef ssize_t
+#ifdef _WIN64
+ typedef __int64 ssize_t;
+#else
+ typedef int ssize_t;
+#endif /* _WIN64 */
+#endif /* _SSIZE_T_DEFINED */
+#endif /* _MSC_VER */
+
+/* stdint.h is not available on older MSVC */
+#if defined(_MSC_VER) && (_MSC_VER < 1600) && (!defined(_STDINT)) && (!defined(_STDINT_H))
+typedef unsigned __int8 uint8_t;
+typedef unsigned __int16 uint16_t;
+typedef unsigned __int32 uint32_t;
+#else
#include <stdint.h>
+#endif
+
+#if !defined(_WIN32_WCE)
+#include <sys/types.h>
+#endif
+
+#if defined(__linux) || defined(__APPLE__) || defined(__CYGWIN__) || defined(__HAIKU__)
#include <sys/time.h>
+#endif
+
#include <time.h>
+#include <limits.h>
+
+/* 'interface' might be defined as a macro on Windows, so we need to
+ * undefine it so as not to break the current libusb API, because
+ * libusb_config_descriptor has an 'interface' member
+ * As this can be problematic if you include windows.h after libusb.h
+ * in your sources, we force windows.h to be included first. */
+#if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE)
+#include <windows.h>
+#if defined(interface)
+#undef interface
+#endif
+#if !defined(__CYGWIN__)
+#include <winsock.h>
+#endif
+#endif
+
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
+#define LIBUSB_DEPRECATED_FOR(f) \
+ __attribute__((deprecated("Use " #f " instead")))
+#else
+#define LIBUSB_DEPRECATED_FOR(f)
+#endif /* __GNUC__ */
+
+/** \def LIBUSB_CALL
+ * \ingroup 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__) || defined(_WIN32_WCE)
+#define LIBUSB_CALL WINAPI
+#else
+#define LIBUSB_CALL
+#endif
+
+/** \def LIBUSB_API_VERSION
+ * \ingroup 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)
+ */
+#define LIBUSB_API_VERSION 0x01000105
+
+/* The following is kept for compatibility, but will be deprecated in the future */
+#define LIBUSBX_API_VERSION LIBUSB_API_VERSION
#ifdef __cplusplus
extern "C" {
#endif
+/**
+ * \ingroup 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 uint16_t libusb_cpu_to_le16(const uint16_t x)
+{
+ union {
+ uint8_t b8[2];
+ uint16_t b16;
+ } _tmp;
+ _tmp.b8[1] = (uint8_t) (x >> 8);
+ _tmp.b8[0] = (uint8_t) (x & 0xff);
+ return _tmp.b16;
+}
+
+/** \def libusb_le16_to_cpu
+ * \ingroup 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
+ */
+#define libusb_le16_to_cpu libusb_cpu_to_le16
+
/* standard USB stuff */
/** \ingroup desc
/** Human Interface Device class */
LIBUSB_CLASS_HID = 3,
- /** Printer dclass */
+ /** Physical */
+ LIBUSB_CLASS_PHYSICAL = 5,
+
+ /** Printer class */
LIBUSB_CLASS_PRINTER = 7,
- /** Picture transfer protocol class */
- LIBUSB_CLASS_PTP = 6,
+ /** Image class */
+ LIBUSB_CLASS_PTP = 6, /* legacy name from libusb-0.1 usb.h */
+ LIBUSB_CLASS_IMAGE = 6,
/** Mass storage class */
LIBUSB_CLASS_MASS_STORAGE = 8,
/** Data class */
LIBUSB_CLASS_DATA = 10,
+ /** Smart Card */
+ LIBUSB_CLASS_SMART_CARD = 0x0b,
+
+ /** Content Security */
+ LIBUSB_CLASS_CONTENT_SECURITY = 0x0d,
+
+ /** Video */
+ LIBUSB_CLASS_VIDEO = 0x0e,
+
+ /** Personal Healthcare */
+ LIBUSB_CLASS_PERSONAL_HEALTHCARE = 0x0f,
+
+ /** Diagnostic Device */
+ LIBUSB_CLASS_DIAGNOSTIC_DEVICE = 0xdc,
+
+ /** Wireless class */
+ LIBUSB_CLASS_WIRELESS = 0xe0,
+
+ /** Application class */
+ LIBUSB_CLASS_APPLICATION = 0xfe,
+
/** Class is vendor-specific */
- LIBUSB_CLASS_VENDOR_SPEC = 0xff,
+ LIBUSB_CLASS_VENDOR_SPEC = 0xff
};
/** \ingroup desc
/** Endpoint descriptor. See libusb_endpoint_descriptor. */
LIBUSB_DT_ENDPOINT = 0x05,
+ /** BOS descriptor */
+ LIBUSB_DT_BOS = 0x0f,
+
+ /** Device Capability descriptor */
+ LIBUSB_DT_DEVICE_CAPABILITY = 0x10,
+
/** HID descriptor */
LIBUSB_DT_HID = 0x21,
/** Hub descriptor */
LIBUSB_DT_HUB = 0x29,
+
+ /** SuperSpeed Hub descriptor */
+ LIBUSB_DT_SUPERSPEED_HUB = 0x2a,
+
+ /** SuperSpeed Endpoint Companion descriptor */
+ LIBUSB_DT_SS_ENDPOINT_COMPANION = 0x30
};
/* Descriptor sizes per descriptor type */
#define LIBUSB_DT_DEVICE_SIZE 18
#define LIBUSB_DT_CONFIG_SIZE 9
#define LIBUSB_DT_INTERFACE_SIZE 9
-#define LIBUSB_DT_ENDPOINT_SIZE 7
-#define LIBUSB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */
+#define LIBUSB_DT_ENDPOINT_SIZE 7
+#define LIBUSB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */
#define LIBUSB_DT_HUB_NONVAR_SIZE 7
+#define LIBUSB_DT_SS_ENDPOINT_COMPANION_SIZE 6
+#define LIBUSB_DT_BOS_SIZE 5
+#define LIBUSB_DT_DEVICE_CAPABILITY_SIZE 3
+
+/* BOS descriptor sizes */
+#define LIBUSB_BT_USB_2_0_EXTENSION_SIZE 7
+#define LIBUSB_BT_SS_USB_DEVICE_CAPABILITY_SIZE 10
+#define LIBUSB_BT_CONTAINER_ID_SIZE 20
+
+/* We unwrap the BOS => define its max size */
+#define 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))
#define LIBUSB_ENDPOINT_ADDRESS_MASK 0x0f /* in bEndpointAddress */
#define LIBUSB_ENDPOINT_DIR_MASK 0x80
LIBUSB_ENDPOINT_IN = 0x80,
/** Out: host-to-device */
- LIBUSB_ENDPOINT_OUT = 0x00,
+ LIBUSB_ENDPOINT_OUT = 0x00
};
#define LIBUSB_TRANSFER_TYPE_MASK 0x03 /* in bmAttributes */
/** Interrupt endpoint */
LIBUSB_TRANSFER_TYPE_INTERRUPT = 3,
+
+ /** Stream endpoint */
+ LIBUSB_TRANSFER_TYPE_BULK_STREAM = 4,
};
/** \ingroup misc
- * Standard requests, as defined in table 9-3 of the USB2 specifications */
+ * Standard requests, as defined in table 9-5 of the USB 3.0 specifications */
enum libusb_standard_request {
/** Request status of the specific recipient */
LIBUSB_REQUEST_GET_STATUS = 0x00,
/** Return the selected alternate setting for the specified interface */
LIBUSB_REQUEST_GET_INTERFACE = 0x0A,
-
+
/** Select an alternate interface for the specified interface */
LIBUSB_REQUEST_SET_INTERFACE = 0x0B,
/** Set then report an endpoint's synchronization frame */
LIBUSB_REQUEST_SYNCH_FRAME = 0x0C,
+
+ /** Sets both the U1 and U2 Exit Latency */
+ LIBUSB_REQUEST_SET_SEL = 0x30,
+
+ /** Delay from the time a host transmits a packet to the time it is
+ * received by the device. */
+ LIBUSB_SET_ISOCH_DELAY = 0x31,
};
/** \ingroup misc
LIBUSB_REQUEST_TYPE_VENDOR = (0x02 << 5),
/** Reserved */
- LIBUSB_REQUEST_TYPE_RESERVED = (0x03 << 5),
+ LIBUSB_REQUEST_TYPE_RESERVED = (0x03 << 5)
};
/** \ingroup misc
LIBUSB_ISO_SYNC_TYPE_ADAPTIVE = 2,
/** Synchronous */
- LIBUSB_ISO_SYNC_TYPE_SYNC = 3,
+ LIBUSB_ISO_SYNC_TYPE_SYNC = 3
};
#define LIBUSB_ISO_USAGE_TYPE_MASK 0x30
/** \ingroup desc
* A structure representing the standard USB device descriptor. This
- * descriptor is documented in section 9.6.1 of the USB 2.0 specification.
+ * descriptor is documented in section 9.6.1 of the USB 3.0 specification.
* All multiple-byte fields are represented in host-endian format.
*/
struct libusb_device_descriptor {
/** \ingroup desc
* A structure representing the standard USB endpoint descriptor. This
- * descriptor is documented in section 9.6.3 of the USB 2.0 specification.
+ * descriptor is documented in section 9.6.6 of the USB 3.0 specification.
* All multiple-byte fields are represented in host-endian format.
*/
struct libusb_endpoint_descriptor {
/** \ingroup desc
* A structure representing the standard USB interface descriptor. This
- * descriptor is documented in section 9.6.5 of the USB 2.0 specification.
+ * descriptor is documented in section 9.6.5 of the USB 3.0 specification.
* All multiple-byte fields are represented in host-endian format.
*/
struct libusb_interface_descriptor {
/** Number of endpoints used by this interface (excluding the control
* endpoint). */
uint8_t bNumEndpoints;
-
+
/** USB-IF class code for this interface. See \ref libusb_class_code. */
uint8_t bInterfaceClass;
/** \ingroup desc
* A structure representing the standard USB configuration descriptor. This
- * descriptor is documented in section 9.6.3 of the USB 2.0 specification.
+ * descriptor is documented in section 9.6.3 of the USB 3.0 specification.
* All multiple-byte fields are represented in host-endian format.
*/
struct libusb_config_descriptor {
uint8_t bmAttributes;
/** Maximum power consumption of the USB device from this bus in this
- * configuration when the device is fully opreation. Expressed in units
- * of 2 mA. */
+ * 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. */
uint8_t MaxPower;
/** Array of interfaces supported by this configuration. The length of
int extra_length;
};
+/** \ingroup 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.
+ */
+struct libusb_ss_endpoint_companion_descriptor {
+
+ /** Size of this descriptor (in bytes) */
+ uint8_t bLength;
+
+ /** Descriptor type. Will have value
+ * \ref libusb_descriptor_type::LIBUSB_DT_SS_ENDPOINT_COMPANION in
+ * this context. */
+ uint8_t bDescriptorType;
+
+
+ /** The maximum number of packets the endpoint can send or
+ * receive as part of a burst. */
+ uint8_t bMaxBurst;
+
+ /** 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 */
+ uint8_t bmAttributes;
+
+ /** The total number of bytes this EP will transfer every
+ * service interval. valid only for periodic EPs. */
+ uint16_t wBytesPerInterval;
+};
+
+/** \ingroup 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.
+ */
+struct libusb_bos_dev_capability_descriptor {
+ /** Size of this descriptor (in bytes) */
+ uint8_t bLength;
+ /** Descriptor type. Will have value
+ * \ref libusb_descriptor_type::LIBUSB_DT_DEVICE_CAPABILITY
+ * LIBUSB_DT_DEVICE_CAPABILITY in this context. */
+ uint8_t bDescriptorType;
+ /** Device Capability type */
+ uint8_t bDevCapabilityType;
+ /** Device Capability data (bLength - 3 bytes) */
+ uint8_t dev_capability_data
+#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
+ [] /* valid C99 code */
+#else
+ [0] /* non-standard, but usually working code */
+#endif
+ ;
+};
+
+/** \ingroup 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.
+ */
+struct libusb_bos_descriptor {
+ /** Size of this descriptor (in bytes) */
+ uint8_t bLength;
+
+ /** Descriptor type. Will have value
+ * \ref libusb_descriptor_type::LIBUSB_DT_BOS LIBUSB_DT_BOS
+ * in this context. */
+ uint8_t bDescriptorType;
+
+ /** Length of this descriptor and all of its sub descriptors */
+ uint16_t wTotalLength;
+
+ /** The number of separate device capability descriptors in
+ * the BOS */
+ uint8_t bNumDeviceCaps;
+
+ /** bNumDeviceCap Device Capability Descriptors */
+ struct libusb_bos_dev_capability_descriptor *dev_capability
+#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
+ [] /* valid C99 code */
+#else
+ [0] /* non-standard, but usually working code */
+#endif
+ ;
+};
+
+/** \ingroup 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.
+ */
+struct libusb_usb_2_0_extension_descriptor {
+ /** Size of this descriptor (in bytes) */
+ uint8_t bLength;
+
+ /** Descriptor type. Will have value
+ * \ref libusb_descriptor_type::LIBUSB_DT_DEVICE_CAPABILITY
+ * LIBUSB_DT_DEVICE_CAPABILITY in this context. */
+ uint8_t bDescriptorType;
+
+ /** Capability type. Will have value
+ * \ref libusb_capability_type::LIBUSB_BT_USB_2_0_EXTENSION
+ * LIBUSB_BT_USB_2_0_EXTENSION in this context. */
+ uint8_t bDevCapabilityType;
+
+ /** 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. */
+ uint32_t bmAttributes;
+};
+
+/** \ingroup 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.
+ */
+struct libusb_ss_usb_device_capability_descriptor {
+ /** Size of this descriptor (in bytes) */
+ uint8_t bLength;
+
+ /** Descriptor type. Will have value
+ * \ref libusb_descriptor_type::LIBUSB_DT_DEVICE_CAPABILITY
+ * LIBUSB_DT_DEVICE_CAPABILITY in this context. */
+ uint8_t bDescriptorType;
+
+ /** Capability type. Will have value
+ * \ref libusb_capability_type::LIBUSB_BT_SS_USB_DEVICE_CAPABILITY
+ * LIBUSB_BT_SS_USB_DEVICE_CAPABILITY in this context. */
+ uint8_t bDevCapabilityType;
+
+ /** 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. */
+ uint8_t bmAttributes;
+
+ /** Bitmap encoding of the speed supported by this device when
+ * operating in SuperSpeed mode. See \ref libusb_supported_speed. */
+ uint16_t wSpeedSupported;
+
+ /** 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. */
+ uint8_t bFunctionalitySupport;
+
+ /** U1 Device Exit Latency. */
+ uint8_t bU1DevExitLat;
+
+ /** U2 Device Exit Latency. */
+ uint16_t bU2DevExitLat;
+};
+
+/** \ingroup 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.
+ */
+struct libusb_container_id_descriptor {
+ /** Size of this descriptor (in bytes) */
+ uint8_t bLength;
+
+ /** Descriptor type. Will have value
+ * \ref libusb_descriptor_type::LIBUSB_DT_DEVICE_CAPABILITY
+ * LIBUSB_DT_DEVICE_CAPABILITY in this context. */
+ uint8_t bDescriptorType;
+
+ /** Capability type. Will have value
+ * \ref libusb_capability_type::LIBUSB_BT_CONTAINER_ID
+ * LIBUSB_BT_CONTAINER_ID in this context. */
+ uint8_t bDevCapabilityType;
+
+ /** Reserved field */
+ uint8_t bReserved;
+
+ /** 128 bit UUID */
+ uint8_t ContainerID[16];
+};
+
/** \ingroup asyncio
* Setup packet for control transfers. */
struct libusb_control_setup {
/** Number of bytes to transfer */
uint16_t wLength;
-} __attribute__((packed));
+};
#define LIBUSB_CONTROL_SETUP_SIZE (sizeof(struct libusb_control_setup))
/* libusb */
+struct libusb_context;
struct libusb_device;
struct libusb_device_handle;
+/** \ingroup lib
+ * Structure providing the version of the libusb runtime
+ */
+struct libusb_version {
+ /** Library major version. */
+ const uint16_t major;
+
+ /** Library minor version. */
+ const uint16_t minor;
+
+ /** Library micro version. */
+ const uint16_t micro;
+
+ /** Library nano version. */
+ const uint16_t nano;
+
+ /** Library release candidate suffix string, e.g. "-rc4". */
+ const char *rc;
+
+ /** For ABI compatibility only. */
+ const char* describe;
+};
+
+/** \ingroup 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_debug() 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. The default context
+ * will be used.
+ *
+ * For more information, see \ref contexts.
+ */
+typedef struct libusb_context libusb_context;
+
/** \ingroup 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
* 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_device_ref() and
- * libusb_device_unref(), and are freed when the reference count reaches 0.
+ * 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
*/
typedef struct libusb_device_handle libusb_device_handle;
+/** \ingroup dev
+ * Speed codes. Indicates the speed at which the device is operating.
+ */
+enum libusb_speed {
+ /** The OS doesn't report or know the device speed. */
+ LIBUSB_SPEED_UNKNOWN = 0,
+
+ /** The device is operating at low speed (1.5MBit/s). */
+ LIBUSB_SPEED_LOW = 1,
+
+ /** The device is operating at full speed (12MBit/s). */
+ LIBUSB_SPEED_FULL = 2,
+
+ /** The device is operating at high speed (480MBit/s). */
+ LIBUSB_SPEED_HIGH = 3,
+
+ /** The device is operating at super speed (5000MBit/s). */
+ LIBUSB_SPEED_SUPER = 4,
+};
+
+/** \ingroup dev
+ * Supported speeds (wSpeedSupported) bitfield. Indicates what
+ * speeds the device supports.
+ */
+enum libusb_supported_speed {
+ /** Low speed operation supported (1.5MBit/s). */
+ LIBUSB_LOW_SPEED_OPERATION = 1,
+
+ /** Full speed operation supported (12MBit/s). */
+ LIBUSB_FULL_SPEED_OPERATION = 2,
+
+ /** High speed operation supported (480MBit/s). */
+ LIBUSB_HIGH_SPEED_OPERATION = 4,
+
+ /** Superspeed operation supported (5000MBit/s). */
+ LIBUSB_SUPER_SPEED_OPERATION = 8,
+};
+
+/** \ingroup dev
+ * Masks for the bits of the
+ * \ref libusb_usb_2_0_extension_descriptor::bmAttributes "bmAttributes" field
+ * of the USB 2.0 Extension descriptor.
+ */
+enum libusb_usb_2_0_extension_attributes {
+ /** Supports Link Power Management (LPM) */
+ LIBUSB_BM_LPM_SUPPORT = 2,
+};
+
+/** \ingroup dev
+ * Masks for the bits of the
+ * \ref libusb_ss_usb_device_capability_descriptor::bmAttributes "bmAttributes" field
+ * field of the SuperSpeed USB Device Capability descriptor.
+ */
+enum libusb_ss_usb_device_capability_attributes {
+ /** Supports Latency Tolerance Messages (LTM) */
+ LIBUSB_BM_LTM_SUPPORT = 2,
+};
+
+/** \ingroup dev
+ * USB capability types
+ */
+enum libusb_bos_type {
+ /** Wireless USB device capability */
+ LIBUSB_BT_WIRELESS_USB_DEVICE_CAPABILITY = 1,
+
+ /** USB 2.0 extensions */
+ LIBUSB_BT_USB_2_0_EXTENSION = 2,
+
+ /** SuperSpeed USB device capability */
+ LIBUSB_BT_SS_USB_DEVICE_CAPABILITY = 3,
+
+ /** Container ID type */
+ LIBUSB_BT_CONTAINER_ID = 4,
+};
+
+/** \ingroup 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.
+ */
enum libusb_error {
+ /** Success (no error) */
LIBUSB_SUCCESS = 0,
+
+ /** Input/output error */
LIBUSB_ERROR_IO = -1,
+
+ /** Invalid parameter */
LIBUSB_ERROR_INVALID_PARAM = -2,
+
+ /** Access denied (insufficient permissions) */
LIBUSB_ERROR_ACCESS = -3,
- LIBUSB_ERROR_NOT_FOUND = -4,
- LIBUSB_ERROR_BUSY = -5,
- LIBUSB_ERROR_TIMEOUT = -6,
- LIBUSB_ERROR_PIPE = -7,
- LIBUSB_ERROR_NO_MEM = -8,
- LIBUSB_ERROR_NOT_SUPPORTED = -9,
- LIBUSB_ERROR_OTHER = -10,
+
+ /** No such device (it may have been disconnected) */
+ LIBUSB_ERROR_NO_DEVICE = -4,
+
+ /** Entity not found */
+ LIBUSB_ERROR_NOT_FOUND = -5,
+
+ /** Resource busy */
+ LIBUSB_ERROR_BUSY = -6,
+
+ /** Operation timed out */
+ LIBUSB_ERROR_TIMEOUT = -7,
+
+ /** Overflow */
+ LIBUSB_ERROR_OVERFLOW = -8,
+
+ /** Pipe error */
+ LIBUSB_ERROR_PIPE = -9,
+
+ /** System call interrupted (perhaps due to signal) */
+ LIBUSB_ERROR_INTERRUPTED = -10,
+
+ /** Insufficient memory */
+ LIBUSB_ERROR_NO_MEM = -11,
+
+ /** Operation not supported or unimplemented on this platform */
+ LIBUSB_ERROR_NOT_SUPPORTED = -12,
+
+ /* 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 = -99,
};
+/* Total number of error codes in enum libusb_error */
+#define LIBUSB_ERROR_COUNT 14
+
/** \ingroup asyncio
* Transfer status codes */
enum libusb_transfer_status {
/** 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. */
};
/** \ingroup asyncio
LIBUSB_TRANSFER_FREE_BUFFER = 1<<1,
/** Automatically call libusb_free_transfer() after callback returns.
- * If this flag is set, it is illegal to call libusb_free_transfer()
+ * 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 = 1<<2,
+
+ /** 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 << 3,
};
/** \ingroup asyncio
struct libusb_transfer;
-typedef void (*libusb_transfer_cb_fn)(struct libusb_transfer *transfer);
+/** \ingroup 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 asyncio for more information.
+ * \param transfer The libusb_transfer struct the callback function is being
+ * notified about.
+ */
+typedef void (LIBUSB_CALL *libusb_transfer_cb_fn)(struct libusb_transfer *transfer);
/** \ingroup asyncio
- * The generic USB transfer structure.
+ * 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.
*/
struct libusb_transfer {
/** Handle of the device that this transfer will be submitted to */
int num_iso_packets;
/** Isochronous packet descriptors, for isochronous transfers only. */
- struct libusb_iso_packet_descriptor iso_packet_desc[0];
+ struct libusb_iso_packet_descriptor iso_packet_desc
+#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
+ [] /* valid C99 code */
+#else
+ [0] /* non-standard, but usually working code */
+#endif
+ ;
};
-int libusb_init(void);
-void libusb_exit(void);
-
-size_t libusb_get_device_list(libusb_device ***list);
-void libusb_free_device_list(libusb_device **list, int unref_devices);
-const struct libusb_device_descriptor *libusb_get_device_descriptor(
- libusb_device *dev);
-const struct libusb_config_descriptor *libusb_get_config_descriptor(
- libusb_device *dev);
-libusb_device *libusb_ref_device(libusb_device *dev);
-void libusb_unref_device(libusb_device *dev);
-uint8_t libusb_get_bus_number(libusb_device *dev);
-uint8_t libusb_get_device_address(libusb_device *dev);
-int libusb_get_max_packet_size(libusb_device *dev, unsigned char endpoint);
-
-libusb_device_handle *libusb_open(libusb_device *dev);
-void libusb_close(libusb_device_handle *dev_handle);
-libusb_device *libusb_get_device(libusb_device_handle *dev_handle);
-
-int libusb_set_configuration(libusb_device_handle *dev, int configuration);
-int libusb_claim_interface(libusb_device_handle *dev, int iface);
-int libusb_release_interface(libusb_device_handle *dev, int iface);
-
-libusb_device_handle *libusb_open_device_with_vid_pid(uint16_t vendor_id,
- uint16_t product_id);
-
-int libusb_set_interface_alt_setting(libusb_device_handle *dev,
- int interface_number, int alternate_setting);
-int libusb_clear_halt(libusb_device_handle *dev, unsigned char endpoint);
-int libusb_reset_device(libusb_device_handle *dev);
+/** \ingroup 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().
+ */
+enum libusb_capability {
+ /** The libusb_has_capability() API is available. */
+ LIBUSB_CAP_HAS_CAPABILITY = 0x0000,
+ /** Hotplug support is available on this platform. */
+ LIBUSB_CAP_HAS_HOTPLUG = 0x0001,
+ /** 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 = 0x0100,
+ /** 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 = 0x0101
+};
-int libusb_kernel_driver_active(libusb_device_handle *dev, int interface);
-int libusb_detach_kernel_driver(libusb_device_handle *dev, int interface);
+/** \ingroup lib
+ * Log message levels.
+ * - LIBUSB_LOG_LEVEL_NONE (0) : no messages ever printed by the library (default)
+ * - LIBUSB_LOG_LEVEL_ERROR (1) : error messages are printed to stderr
+ * - LIBUSB_LOG_LEVEL_WARNING (2) : warning and error messages are printed to stderr
+ * - LIBUSB_LOG_LEVEL_INFO (3) : informational messages are printed to stdout, warning
+ * and error messages are printed to stderr
+ * - LIBUSB_LOG_LEVEL_DEBUG (4) : debug and informational messages are printed to stdout,
+ * warnings and errors to stderr
+ */
+enum libusb_log_level {
+ LIBUSB_LOG_LEVEL_NONE = 0,
+ LIBUSB_LOG_LEVEL_ERROR,
+ LIBUSB_LOG_LEVEL_WARNING,
+ LIBUSB_LOG_LEVEL_INFO,
+ LIBUSB_LOG_LEVEL_DEBUG,
+};
+
+int LIBUSB_CALL libusb_init(libusb_context **ctx);
+void LIBUSB_CALL libusb_exit(libusb_context *ctx);
+void LIBUSB_CALL libusb_set_debug(libusb_context *ctx, int level);
+const struct libusb_version * LIBUSB_CALL libusb_get_version(void);
+int LIBUSB_CALL libusb_has_capability(uint32_t capability);
+const char * LIBUSB_CALL libusb_error_name(int errcode);
+int LIBUSB_CALL libusb_setlocale(const char *locale);
+const char * LIBUSB_CALL libusb_strerror(enum libusb_error errcode);
+
+ssize_t LIBUSB_CALL libusb_get_device_list(libusb_context *ctx,
+ libusb_device ***list);
+void LIBUSB_CALL libusb_free_device_list(libusb_device **list,
+ int unref_devices);
+libusb_device * LIBUSB_CALL libusb_ref_device(libusb_device *dev);
+void LIBUSB_CALL libusb_unref_device(libusb_device *dev);
+
+int LIBUSB_CALL libusb_get_configuration(libusb_device_handle *dev,
+ int *config);
+int LIBUSB_CALL libusb_get_device_descriptor(libusb_device *dev,
+ struct libusb_device_descriptor *desc);
+int LIBUSB_CALL libusb_get_active_config_descriptor(libusb_device *dev,
+ struct libusb_config_descriptor **config);
+int LIBUSB_CALL libusb_get_config_descriptor(libusb_device *dev,
+ uint8_t config_index, struct libusb_config_descriptor **config);
+int LIBUSB_CALL libusb_get_config_descriptor_by_value(libusb_device *dev,
+ uint8_t bConfigurationValue, struct libusb_config_descriptor **config);
+void LIBUSB_CALL libusb_free_config_descriptor(
+ struct libusb_config_descriptor *config);
+int LIBUSB_CALL libusb_get_ss_endpoint_companion_descriptor(
+ struct libusb_context *ctx,
+ const struct libusb_endpoint_descriptor *endpoint,
+ struct libusb_ss_endpoint_companion_descriptor **ep_comp);
+void LIBUSB_CALL libusb_free_ss_endpoint_companion_descriptor(
+ struct libusb_ss_endpoint_companion_descriptor *ep_comp);
+int LIBUSB_CALL libusb_get_bos_descriptor(libusb_device_handle *handle,
+ struct libusb_bos_descriptor **bos);
+void LIBUSB_CALL libusb_free_bos_descriptor(struct libusb_bos_descriptor *bos);
+int LIBUSB_CALL libusb_get_usb_2_0_extension_descriptor(
+ struct libusb_context *ctx,
+ struct libusb_bos_dev_capability_descriptor *dev_cap,
+ struct libusb_usb_2_0_extension_descriptor **usb_2_0_extension);
+void LIBUSB_CALL libusb_free_usb_2_0_extension_descriptor(
+ struct libusb_usb_2_0_extension_descriptor *usb_2_0_extension);
+int LIBUSB_CALL libusb_get_ss_usb_device_capability_descriptor(
+ struct libusb_context *ctx,
+ struct libusb_bos_dev_capability_descriptor *dev_cap,
+ struct libusb_ss_usb_device_capability_descriptor **ss_usb_device_cap);
+void LIBUSB_CALL libusb_free_ss_usb_device_capability_descriptor(
+ struct libusb_ss_usb_device_capability_descriptor *ss_usb_device_cap);
+int LIBUSB_CALL libusb_get_container_id_descriptor(struct libusb_context *ctx,
+ struct libusb_bos_dev_capability_descriptor *dev_cap,
+ struct libusb_container_id_descriptor **container_id);
+void LIBUSB_CALL libusb_free_container_id_descriptor(
+ struct libusb_container_id_descriptor *container_id);
+uint8_t LIBUSB_CALL libusb_get_bus_number(libusb_device *dev);
+uint8_t LIBUSB_CALL libusb_get_port_number(libusb_device *dev);
+int LIBUSB_CALL libusb_get_port_numbers(libusb_device *dev, uint8_t* port_numbers, int port_numbers_len);
+LIBUSB_DEPRECATED_FOR(libusb_get_port_numbers)
+int LIBUSB_CALL libusb_get_port_path(libusb_context *ctx, libusb_device *dev, uint8_t* path, uint8_t path_length);
+libusb_device * LIBUSB_CALL libusb_get_parent(libusb_device *dev);
+uint8_t LIBUSB_CALL libusb_get_device_address(libusb_device *dev);
+int LIBUSB_CALL libusb_get_device_speed(libusb_device *dev);
+int LIBUSB_CALL libusb_get_max_packet_size(libusb_device *dev,
+ unsigned char endpoint);
+int LIBUSB_CALL libusb_get_max_iso_packet_size(libusb_device *dev,
+ unsigned char endpoint);
+
+int LIBUSB_CALL libusb_open(libusb_device *dev, libusb_device_handle **handle);
+void LIBUSB_CALL libusb_close(libusb_device_handle *dev_handle);
+libusb_device * LIBUSB_CALL libusb_get_device(libusb_device_handle *dev_handle);
+
+int LIBUSB_CALL libusb_set_configuration(libusb_device_handle *dev,
+ int configuration);
+int LIBUSB_CALL libusb_claim_interface(libusb_device_handle *dev,
+ int interface_number);
+int LIBUSB_CALL libusb_release_interface(libusb_device_handle *dev,
+ int interface_number);
+
+libusb_device_handle * LIBUSB_CALL libusb_open_device_with_vid_pid(
+ libusb_context *ctx, uint16_t vendor_id, uint16_t product_id);
+
+int LIBUSB_CALL libusb_set_interface_alt_setting(libusb_device_handle *dev,
+ int interface_number, int alternate_setting);
+int LIBUSB_CALL libusb_clear_halt(libusb_device_handle *dev,
+ unsigned char endpoint);
+int LIBUSB_CALL libusb_reset_device(libusb_device_handle *dev);
+
+int LIBUSB_CALL libusb_alloc_streams(libusb_device_handle *dev,
+ uint32_t num_streams, unsigned char *endpoints, int num_endpoints);
+int LIBUSB_CALL libusb_free_streams(libusb_device_handle *dev,
+ unsigned char *endpoints, int num_endpoints);
+
+int LIBUSB_CALL libusb_kernel_driver_active(libusb_device_handle *dev,
+ int interface_number);
+int LIBUSB_CALL libusb_detach_kernel_driver(libusb_device_handle *dev,
+ int interface_number);
+int LIBUSB_CALL libusb_attach_kernel_driver(libusb_device_handle *dev,
+ int interface_number);
+int LIBUSB_CALL libusb_set_auto_detach_kernel_driver(
+ libusb_device_handle *dev, int enable);
/* async I/O */
/** \ingroup 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.
+ * 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
static inline struct libusb_control_setup *libusb_control_transfer_get_setup(
struct libusb_transfer *transfer)
{
- return (struct libusb_control_setup *) transfer->buffer;
+ return (struct libusb_control_setup *)(void *) transfer->buffer;
}
/** \ingroup asyncio
* Helper function to populate the setup packet (first 8 bytes of the data
- * buffer) for a control transfer.
- *
+ * 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::bRequest "bRequest" field of
* \ref libusb_control_setup
* \param wValue see the
- * \ref libusb_control_setup::wValue "wValue" field of
+ * \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::wIndex "wIndex" field of
* \ref libusb_control_setup
* \param wLength see the
- * \ref libusb_control_setup::wLength "wLength" field of
+ * \ref libusb_control_setup::wLength "wLength" field of
* \ref libusb_control_setup
*/
static inline void libusb_fill_control_setup(unsigned char *buffer,
uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex,
uint16_t wLength)
{
- struct libusb_control_setup *setup = (struct libusb_control_setup *) buffer;
+ struct libusb_control_setup *setup = (struct libusb_control_setup *)(void *) buffer;
setup->bmRequestType = bmRequestType;
setup->bRequest = bRequest;
- setup->wValue = wValue;
- setup->wIndex = wIndex;
- setup->wLength = wLength;
+ setup->wValue = libusb_cpu_to_le16(wValue);
+ setup->wIndex = libusb_cpu_to_le16(wIndex);
+ setup->wLength = libusb_cpu_to_le16(wLength);
}
-struct libusb_transfer *libusb_alloc_transfer(int iso_packets);
-int libusb_submit_transfer(struct libusb_transfer *transfer);
-int libusb_cancel_transfer(struct libusb_transfer *transfer);
-void libusb_free_transfer(struct libusb_transfer *transfer);
+struct libusb_transfer * LIBUSB_CALL libusb_alloc_transfer(int iso_packets);
+int LIBUSB_CALL libusb_submit_transfer(struct libusb_transfer *transfer);
+int LIBUSB_CALL libusb_cancel_transfer(struct libusb_transfer *transfer);
+void LIBUSB_CALL libusb_free_transfer(struct libusb_transfer *transfer);
+void LIBUSB_CALL libusb_transfer_set_stream_id(
+ struct libusb_transfer *transfer, uint32_t stream_id);
+uint32_t LIBUSB_CALL libusb_transfer_get_stream_id(
+ struct libusb_transfer *transfer);
/** \ingroup asyncio
* Helper function to populate the required \ref libusb_transfer fields
*
* 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 populate the buffer and length fields later.
+ * 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
unsigned char *buffer, libusb_transfer_cb_fn callback, void *user_data,
unsigned int timeout)
{
- struct libusb_control_setup *setup = (struct libusb_control_setup *) buffer;
+ struct libusb_control_setup *setup = (struct libusb_control_setup *)(void *) buffer;
transfer->dev_handle = dev_handle;
transfer->endpoint = 0;
transfer->type = LIBUSB_TRANSFER_TYPE_CONTROL;
transfer->timeout = timeout;
transfer->buffer = buffer;
if (setup)
- transfer->length = LIBUSB_CONTROL_SETUP_SIZE + setup->wLength;
+ transfer->length = (int) (LIBUSB_CONTROL_SETUP_SIZE
+ + libusb_le16_to_cpu(setup->wLength));
transfer->user_data = user_data;
transfer->callback = callback;
}
/** \ingroup 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 void libusb_fill_bulk_stream_transfer(
+ struct libusb_transfer *transfer, libusb_device_handle *dev_handle,
+ unsigned char endpoint, uint32_t stream_id,
+ unsigned char *buffer, int length, libusb_transfer_cb_fn callback,
+ void *user_data, unsigned int timeout)
+{
+ libusb_fill_bulk_transfer(transfer, dev_handle, endpoint, buffer,
+ length, callback, user_data, timeout);
+ transfer->type = LIBUSB_TRANSFER_TYPE_BULK_STREAM;
+ libusb_transfer_set_stream_id(transfer, stream_id);
+}
+
+/** \ingroup asyncio
+ * Helper function to populate the required \ref libusb_transfer fields
* for an interrupt transfer.
*
* \param transfer the transfer to populate
* 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,
{
int i;
size_t offset = 0;
+ int _packet;
- if (packet >= transfer->num_iso_packets)
+ /* 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 NULL;
+ _packet = (int) packet;
- for (i = 0; i < packet; i++)
+ if (_packet >= transfer->num_iso_packets)
+ return NULL;
+
+ for (i = 0; i < _packet; i++)
offset += transfer->iso_packet_desc[i].length;
return transfer->buffer + offset;
static inline unsigned char *libusb_get_iso_packet_buffer_simple(
struct libusb_transfer *transfer, unsigned int packet)
{
- if (packet >= transfer->num_iso_packets)
+ int _packet;
+
+ /* 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 NULL;
-
- return transfer->buffer + (transfer->iso_packet_desc[0].length * packet);
+ _packet = (int) packet;
+
+ if (_packet >= transfer->num_iso_packets)
+ return NULL;
+
+ return transfer->buffer + ((int) transfer->iso_packet_desc[0].length * _packet);
}
/* sync I/O */
-int libusb_control_transfer(libusb_device_handle *dev_handle,
- uint8_t request_type, uint8_t request, uint16_t value, uint16_t index,
- unsigned char *data, uint16_t length, unsigned int timeout);
+int LIBUSB_CALL libusb_control_transfer(libusb_device_handle *dev_handle,
+ uint8_t request_type, uint8_t bRequest, uint16_t wValue, uint16_t wIndex,
+ unsigned char *data, uint16_t wLength, unsigned int timeout);
-int libusb_bulk_transfer(libusb_device_handle *dev_handle,
+int LIBUSB_CALL libusb_bulk_transfer(libusb_device_handle *dev_handle,
unsigned char endpoint, unsigned char *data, int length,
int *actual_length, unsigned int timeout);
-int libusb_interrupt_transfer(libusb_device_handle *dev_handle,
+int LIBUSB_CALL libusb_interrupt_transfer(libusb_device_handle *dev_handle,
unsigned char endpoint, unsigned char *data, int length,
int *actual_length, unsigned int timeout);
uint8_t desc_type, uint8_t desc_index, unsigned char *data, int length)
{
return libusb_control_transfer(dev, LIBUSB_ENDPOINT_IN,
- LIBUSB_REQUEST_GET_DESCRIPTOR, (desc_type << 8) | desc_index, 0, data,
- length, 1000);
+ LIBUSB_REQUEST_GET_DESCRIPTOR, (uint16_t) ((desc_type << 8) | desc_index),
+ 0, data, (uint16_t) length, 1000);
}
/** \ingroup desc
uint8_t desc_index, uint16_t langid, unsigned char *data, int length)
{
return libusb_control_transfer(dev, LIBUSB_ENDPOINT_IN,
- LIBUSB_REQUEST_GET_DESCRIPTOR, (LIBUSB_DT_STRING << 8) | desc_index,
- langid, data, length, 1000);
+ LIBUSB_REQUEST_GET_DESCRIPTOR, (uint16_t)((LIBUSB_DT_STRING << 8) | desc_index),
+ langid, data, (uint16_t) length, 1000);
}
-int libusb_get_string_descriptor_ascii(libusb_device_handle *dev,
- uint8_t index, unsigned char *data, int length);
+int LIBUSB_CALL libusb_get_string_descriptor_ascii(libusb_device_handle *dev,
+ uint8_t desc_index, unsigned char *data, int length);
/* polling and timeouts */
+int LIBUSB_CALL libusb_try_lock_events(libusb_context *ctx);
+void LIBUSB_CALL libusb_lock_events(libusb_context *ctx);
+void LIBUSB_CALL libusb_unlock_events(libusb_context *ctx);
+int LIBUSB_CALL libusb_event_handling_ok(libusb_context *ctx);
+int LIBUSB_CALL libusb_event_handler_active(libusb_context *ctx);
+void LIBUSB_CALL libusb_interrupt_event_handler(libusb_context *ctx);
+void LIBUSB_CALL libusb_lock_event_waiters(libusb_context *ctx);
+void LIBUSB_CALL libusb_unlock_event_waiters(libusb_context *ctx);
+int LIBUSB_CALL libusb_wait_for_event(libusb_context *ctx, struct timeval *tv);
+
+int LIBUSB_CALL libusb_handle_events_timeout(libusb_context *ctx,
+ struct timeval *tv);
+int LIBUSB_CALL libusb_handle_events_timeout_completed(libusb_context *ctx,
+ struct timeval *tv, int *completed);
+int LIBUSB_CALL libusb_handle_events(libusb_context *ctx);
+int LIBUSB_CALL libusb_handle_events_completed(libusb_context *ctx, int *completed);
+int LIBUSB_CALL libusb_handle_events_locked(libusb_context *ctx,
+ struct timeval *tv);
+int LIBUSB_CALL libusb_pollfds_handle_timeouts(libusb_context *ctx);
+int LIBUSB_CALL libusb_get_next_timeout(libusb_context *ctx,
+ struct timeval *tv);
+
/** \ingroup poll
* File descriptor for polling
*/
short events;
};
-int libusb_handle_events_timeout(struct timeval *tv);
-int libusb_handle_events(void);
-int libusb_get_next_timeout(struct timeval *tv);
-const struct libusb_pollfd **libusb_get_pollfds(void);
-
/** \ingroup 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()
*/
-typedef void (*libusb_pollfd_added_cb)(int fd, short events);
+typedef void (LIBUSB_CALL *libusb_pollfd_added_cb)(int fd, short events,
+ void *user_data);
/** \ingroup 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()
*/
-typedef void (*libusb_pollfd_removed_cb)(int fd);
-void libusb_set_pollfd_notifiers(libusb_pollfd_added_cb added_cb,
- libusb_pollfd_removed_cb removed_cb);
+typedef void (LIBUSB_CALL *libusb_pollfd_removed_cb)(int fd, void *user_data);
+
+const struct libusb_pollfd ** LIBUSB_CALL libusb_get_pollfds(
+ libusb_context *ctx);
+void LIBUSB_CALL libusb_free_pollfds(const struct libusb_pollfd **pollfds);
+void LIBUSB_CALL libusb_set_pollfd_notifiers(libusb_context *ctx,
+ libusb_pollfd_added_cb added_cb, libusb_pollfd_removed_cb removed_cb,
+ void *user_data);
+
+/** \ingroup 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 deregisted callback.
+ *
+ * Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102
+ *
+ * For more information, see \ref hotplug.
+ */
+typedef int libusb_hotplug_callback_handle;
+
+/** \ingroup hotplug
+ *
+ * Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102
+ *
+ * Flags for hotplug events */
+typedef enum {
+ /** Default value when not using any flags. */
+ LIBUSB_HOTPLUG_NO_FLAGS = 0,
+
+ /** Arm the callback and fire it for all matching currently attached devices. */
+ LIBUSB_HOTPLUG_ENUMERATE = 1<<0,
+} libusb_hotplug_flag;
+
+/** \ingroup hotplug
+ *
+ * Since version 1.0.16, \ref LIBUSB_API_VERSION >= 0x01000102
+ *
+ * Hotplug events */
+typedef enum {
+ /** A device has been plugged in and is ready to use */
+ LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED = 0x01,
+
+ /** 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 = 0x02,
+} libusb_hotplug_event;
+
+/** \ingroup hotplug
+ * Wildcard matching for hotplug events */
+#define LIBUSB_HOTPLUG_MATCH_ANY -1
+
+/** \ingroup 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 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
+ */
+typedef int (LIBUSB_CALL *libusb_hotplug_callback_fn)(libusb_context *ctx,
+ libusb_device *device,
+ libusb_hotplug_event event,
+ void *user_data);
+
+/** \ingroup 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[in] ctx context to register this callback with
+ * \param[in] events bitwise or of events that will trigger this callback. See \ref
+ * libusb_hotplug_event
+ * \param[in] flags hotplug callback flags. See \ref libusb_hotplug_flag
+ * \param[in] vendor_id the vendor id to match or \ref LIBUSB_HOTPLUG_MATCH_ANY
+ * \param[in] product_id the product id to match or \ref LIBUSB_HOTPLUG_MATCH_ANY
+ * \param[in] dev_class the device class to match or \ref LIBUSB_HOTPLUG_MATCH_ANY
+ * \param[in] cb_fn the function to be invoked on a matching event/device
+ * \param[in] user_data user data to pass to the callback function
+ * \param[out] handle pointer to store the handle of the allocated callback (can be NULL)
+ * \returns LIBUSB_SUCCESS on success LIBUSB_ERROR code on failure
+ */
+int LIBUSB_CALL libusb_hotplug_register_callback(libusb_context *ctx,
+ libusb_hotplug_event events,
+ libusb_hotplug_flag flags,
+ int vendor_id, int product_id,
+ int dev_class,
+ libusb_hotplug_callback_fn cb_fn,
+ void *user_data,
+ libusb_hotplug_callback_handle *handle);
+
+/** \ingroup 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[in] ctx context this callback is registered with
+ * \param[in] handle the handle of the callback to deregister
+ */
+void LIBUSB_CALL libusb_hotplug_deregister_callback(libusb_context *ctx,
+ libusb_hotplug_callback_handle handle);
#ifdef __cplusplus
}
projects / platform / upstream / libusb.git / blobdiff