Copyright © 2001 Johannes Erdfelt <johannes@erdfelt.com>
Copyright © 2007-2009 Daniel Drake <dsd@gentoo.org>
Copyright © 2010-2012 Peter Stuge <peter@stuge.se>
Copyright © 2008-2016 Nathan Hjelm <hjelmn@users.sourceforge.net>
Copyright © 2009-2013 Pete Batard <pete@akeo.ie>
Copyright © 2009-2013 Ludovic Rousseau <ludovic.rousseau@gmail.com>
Copyright © 2010-2012 Michael Plante <michael.plante@gmail.com>
Copyright © 2011-2013 Hans de Goede <hdegoede@redhat.com>
Copyright © 2012-2013 Martin Pieuchot <mpi@openbsd.org>
Copyright © 2012-2013 Toby Gray <toby.gray@realvnc.com>
Copyright © 2013-2015 Chris Dickens <christopher.a.dickens@gmail.com>

Other contributors:
Akshay Jaggi
Alan Ott
Alan Stern
Alex Vatchenko
Andrew Fernandes
Anthony Clay
Antonio Ospite
Artem Egorkine
Aurelien Jarno
Bastien Nocera
Bei Zhang
Benjamin Dobell
Carl Karsten
Colin Walters
Dave Camarillo
David Engraf
David Moore
Davidlohr Bueso
Federico Manzan
Felipe Balbi
Florian Albrechtskirchinger
Francesco Montorsi
Francisco Facioni
Gaurav Gupta
Graeme Gill
Gustavo Zacarias
Hans Ulrich Niedermann
Hector Martin
Hoi-Ho Chan
Ilya Konstantinov
James Hanko
John Sheu
Joshua Blake
Justin Bischoff
Karsten Koenig
Konrad Rzepecki
Kuangye Guo
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Lars Wirzenius
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Marcus Meissner
Markus Heidelberg
Martin Ettl
Martin Koegler
Matthias Bolte
Mike Frysinger
Mikhail Gusarov
Moritz Fischer
Ларионов Даниил
Nicholas Corgan
Omri Iluz
Orin Eman
Paul Fertser
Pekka Nikander
Rob Walker
Sean McBride
Sebastian Pipping
Simon Haggett
Simon Newton
Thomas Röfer
Tim Hutt
Tim Roberts
Tobias Klauser
Toby Peterson
Tormod Volden
Trygve Laugstøl
Uri Lublin
Vasily Khoruzhick
Vegard Storheil Eriksen
Venkatesh Shukla
Vitali Lovich
Xiaofan Chen
Zoltán Kovács
Роман Донченко
parafin
xantares

LOCAL_PATH:= $(call my-dir)

###########################
#
# libusb shared library
#
###########################

include $(CLEAR_VARS)

LOCAL_SRC_FILES := \
	libusb/core.c \
	libusb/descriptor.c \
	libusb/hotplug.c \
	libusb/io.c \
	libusb/sync.c \
	libusb/strerror.c \
	libusb/os/linux_usbfs.c \
	libusb/os/poll_posix.c \
	libusb/os/threads_posix.c \
	libusb/os/linux_netlink.c

LOCAL_C_INCLUDES += \
	$(LOCAL_PATH)/android \
	$(LOCAL_PATH)/libusb \
	$(LOCAL_PATH)/libusb/os

LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/libusb

LOCAL_LDLIBS := -llog

LOCAL_MODULE := libusb

include $(BUILD_SHARED_LIBRARY)

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That's all there is to it!

For detailed information about the changes below, please see the git log or
visit: http://log.libusb.info

2015-09-13: v1.0.20
* Add Haiku support
* Fix multiple memory and resource leaks (#16, #52, #76, #81)
* Fix possible deadlock when executing transfer callback
* New libusb_free_pollfds() API
* Darwin: Fix devices not being detected on OS X 10.8 (#48)
* Linux: Allow larger isochronous transfer submission (#23)
* Windows: Fix broken builds Cygwin/MinGW builds and compiler warnings
* Windows: Fix broken bus number lookup
* Windows: Improve submission of control requests for composite devices
* Examples: Add two-stage load support to fxload (#12)
* Correctly report cancellations due to timeouts
* Improve efficiency of event handling
* Improve speed of transfer submission in multi-threaded environments
* Various other bug fixes and improvements
The (#xx) numbers are libusb issue numbers, see ie:
https://github.com/libusb/libusb/issues/16

2014-05-30: v1.0.19
* Add support for USB bulk streams on Linux and Mac OS X (#11)
* Windows: Add AMD and Intel USB-3.0 root hub support
* Windows: Fix USB 3.0 speed detection on Windows 8 or later (#10)
* Added Russian translation for libusb_strerror strings
* All: Various small fixes and cleanups

2014-01-25: v1.0.18
* Fix multiple memory leaks
* Fix a crash when HID transfers return no data on Windows
* Ensure all pending events are consumed
* Improve Android and ucLinux support
* Multiple Windows improvements (error logging, VS2013, VIA xHCI support)
* Multiple OS X improvements (broken compilation, SIGFPE, 64bit support)

2013-09-06: v1.0.17
* Hotplug callbacks now always get passed a libusb_context, even if it is
  the default context. Previously NULL would be passed for the default context,
  but since the first context created is the default context, and most apps
  use only 1 context, this meant that apps explicitly creating a context would
  still get passed NULL
* Android: Add .mk files to build with the Android NDK
* Darwin: Add Xcode project
* Darwin: Fix crash on unplug (#121)
* Linux: Fix hang (deadlock) on libusb_exit
* Linux: Fix libusb build failure with --disable-udev (#124)
* Linux: Fix libusb_get_device_list() hang with --disable-udev (#130)
* OpenBSD: Update OpenBSD backend with support for control transfers to
  non-ugen(4) devices and make get_configuration() no longer generate I/O.
  Note that using this libusb version on OpenBSD requires using
  OpenBSD 5.3-current or later. Users of older OpenBSD versions are advised
  to stay with the libusb shipped with OpenBSD (mpi)
* Windows: fix libusb_dll_2010.vcxproj link errors (#129)
* Various other bug fixes and improvements

2013-07-11: v1.0.16
* Add hotplug support for Darwin and Linux (#9)
* Add superspeed endpoint companion descriptor support (#15)
* Add BOS descriptor support (#15)
* Make descriptor parsing code more robust
* New libusb_get_port_numbers API, this is libusb_get_port_path without
  the unnecessary context parameter, libusb_get_port_path is now deprecated
* New libusb_strerror API (#14)
* New libusb_set_auto_detach_kernel_driver API (#17)
* Improve topology API docs (#95)
* Logging now use a single write call per log-message, avoiding log-message
  "interlacing" when using multiple threads.
* Android: use Android logging when building on Android (#101)
* Darwin: make libusb_reset reenumerate device on descriptors change (#89)
* Darwin: add support for the LIBUSB_TRANSFER_ADD_ZERO_PACKET flag (#91)
* Darwin: add a device cache (#112, #114)
* Examples: Add sam3u_benchmark isochronous example by Harald Welte (#109)
* Many other bug fixes and improvements
The (#xx) numbers are libusbx issue numbers, see ie:
https://github.com/libusbx/libusbx/issues/9

2013-04-15: v1.0.15
* Improve transfer cancellation and avoid short read failures on broken descriptors
* Filter out 8-bit characters in libusb_get_string_descriptor_ascii()
* Add WinCE support
* Add library stress tests
* Add Cypress FX3 firmware upload support for fxload sample
* Add HID and kernel driver detach support capabilities detection
* Add SuperSpeed detection on OS X
* Fix bInterval value interpretation on OS X
* Fix issues with autoclaim, composite HID devices, interface autoclaim and
  early abort in libusb_close() on Windows. Also add VS2012 solution files.
* Improve fd event handling on Linux
* Other bug fixes and improvements

2012-09-26: v1.0.14
* Reverts the previous API change with regards to bMaxPower.
  If this doesn't matter to you, you are encouraged to keep using v1.0.13,
  as it will use the same attribute as v2.0, to be released soon.
* Note that LIBUSB_API_VERSION is *decreased* to 0x010000FF and the previous
  guidelines with regards to concurrent use of MaxPower/bMaxPower still apply.

2012-09-20: v1.0.13
* [MAJOR] Fix a typo in the API with struct libusb_config_descriptor where
  MaxPower was used instead of bMaxPower, as defined in the specs. If your 
  application was accessing the MaxPower attribute, and you need to maintain
  compatibility with libusb or older versions, see APPENDIX A below.
* Fix broken support for the 0.1 -> 1.0 libusb-compat layer
* Fix unwanted cancellation of pending timeouts as well as major timeout related bugs
* Fix handling of HID and composite devices on Windows
* Introduce LIBUSB_API_VERSION macro
* Add Cypress FX/FX2 firmware upload sample, based on fxload from
  http://linux-hotplug.sourceforge.net
* Add libusb0 (libusb-win32) and libusbK driver support on Windows. Note that while
  the drivers allow it, isochronous transfers are not supported yet in libusb. Also
  not supported yet is the use of libusb-win32 filter drivers on composite interfaces
* Add support for the new get_capabilities ioctl on Linux and avoid unnecessary
  splitting of bulk transfers
* Improve support for newer Intel and Renesas USB 3.0 controllers on Windows
* Harmonize the device number for root hubs across platforms
* Other bug fixes and improvements

2012-06-15: v1.0.12
* Fix a potential major regression with pthread on Linux
* Fix missing thread ID from debug log output on cygwin
* Fix possible crash when using longjmp and MinGW's gcc 4.6
* Add topology calls: libusb_get_port_number(), libusb_get_parent() & libusb_get_port_path()
* Add toggleable debug, using libusb_set_debug() or the LIBUSB_DEBUG environment variable
* Define log levels in libusb.h and set timestamp origin to first libusb_init() call
* All logging is now sent to to stderr (info was sent to stdout previously)
* Update log messages severity and avoid polluting log output on OS-X
* Add HID driver support on Windows
* Enable interchangeability of MSVC and MinGW DLLs
* Additional bug fixes and improvements

2012-05-08: v1.0.11
* Revert removal of critical Windows event handling that was introduced in 1.0.10
* Fix a possible deadlock in Windows when submitting transfers
* Add timestamped logging
* Add NetBSD support (experimental) and BSD libusb_get_device_speed() data
* Add bootstrap.sh alongside autogen.sh (bootstrap.sh doesn't invoke configure)
* Search for device nodes in /dev for Android support
* Other bug fixes

2012-04-17: v1.0.10
* Public release
* Add libusb_get_version
* Add Visual Studio 2010 project files
* Some Windows code cleanup
* Fix xusb sample warnings 

2012-04-02: v1.0.9
* First libusbx release
* Add libusb_get_device_speed (all, except BSD) and libusb_error_name
* Add Windows support (WinUSB driver only)
* Add OpenBSD support
* Add xusb sample
* Tons of bug fixes

2010-05-07: v1.0.8
* Bug fixes

2010-04-19: v1.0.7
* Bug fixes and documentation tweaks
* Add more interface class definitions

2009-11-22: v1.0.6
* Bug fixes
* Increase libusb_handle_events() timeout to 60s for powersaving

2009-11-15: v1.0.5
 * Use timerfd when available for timer management
 * Small fixes/updates

2009-11-06: v1.0.4 release
 * Bug fixes including transfer locking to fix some potential threading races
 * More flexibility with clock types on Linux
 * Use new bulk continuation tracking in Linux 2.6.32 for improved handling
   of short/failed transfers

2009-08-27: v1.0.3 release
 * Bug fixes
 * Add libusb_get_max_iso_packet_size()

2009-06-13: v1.0.2 release
 * Bug fixes

2009-05-12: v1.0.1 release
 * Bug fixes
 * Darwin backend

2008-12-13: v1.0.0 release
 * Bug fixes

2008-11-21: v0.9.4 release
 * Bug fixes
 * Add libusb_attach_kernel_driver()

2008-08-23: v0.9.3 release
 * Bug fixes

2008-07-19: v0.9.2 release
 * Bug fixes

2008-06-28: v0.9.1 release
 * Bug fixes
 * Introduce contexts to the API
 * Compatibility with new Linux kernel features

2008-05-25: v0.9.0 release
 * First libusb-1.0 beta release

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

APPENDIX A - How to maintain code compatibility with versions of libusb and
libusb that use MaxPower:

If you must to maintain compatibility with versions of the library that aren't
using the bMaxPower attribute in struct libusb_config_descriptor, the 
recommended way is to use the new LIBUSB_API_VERSION macro with an #ifdef.
For instance, if your code was written as follows:

  if (dev->config[0].MaxPower < 250)

Then you should modify it to have:

#if defined(LIBUSB_API_VERSION) && (LIBUSB_API_VERSION >= 0x01000100)
  if (dev->config[0].bMaxPower < 250)
#else
  if (dev->config[0].MaxPower < 250)
#endif

Installation Instructions
*************************

Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005,
2006 Free Software Foundation, Inc.

This file is free documentation; the Free Software Foundation gives
unlimited permission to copy, distribute and modify it.

Basic Installation
==================

Briefly, the shell commands `./configure; make; make install' should
configure, build, and install this package.  The following
more-detailed instructions are generic; see the `README' file for
instructions specific to this package.

   The `configure' shell script attempts to guess correct values for
various system-dependent variables used during compilation.  It uses
those values to create a `Makefile' in each directory of the package.
It may also create one or more `.h' files containing system-dependent
definitions.  Finally, it creates a shell script `config.status' that
you can run in the future to recreate the current configuration, and a
file `config.log' containing compiler output (useful mainly for
debugging `configure').

   It can also use an optional file (typically called `config.cache'
and enabled with `--cache-file=config.cache' or simply `-C') that saves
the results of its tests to speed up reconfiguring.  Caching is
disabled by default to prevent problems with accidental use of stale
cache files.

   If you need to do unusual things to compile the package, please try
to figure out how `configure' could check whether to do them, and mail
diffs or instructions to the address given in the `README' so they can
be considered for the next release.  If you are using the cache, and at
some point `config.cache' contains results you don't want to keep, you
may remove or edit it.

   The file `configure.ac' (or `configure.in') is used to create
`configure' by a program called `autoconf'.  You need `configure.ac' if
you want to change it or regenerate `configure' using a newer version
of `autoconf'.

The simplest way to compile this package is:

  1. `cd' to the directory containing the package's source code and type
     `./configure' to configure the package for your system.

     Running `configure' might take a while.  While running, it prints
     some messages telling which features it is checking for.

  2. Type `make' to compile the package.

  3. Optionally, type `make check' to run any self-tests that come with
     the package.

  4. Type `make install' to install the programs and any data files and
     documentation.

  5. You can remove the program binaries and object files from the
     source code directory by typing `make clean'.  To also remove the
     files that `configure' created (so you can compile the package for
     a different kind of computer), type `make distclean'.  There is
     also a `make maintainer-clean' target, but that is intended mainly
     for the package's developers.  If you use it, you may have to get
     all sorts of other programs in order to regenerate files that came
     with the distribution.

Compilers and Options
=====================

Some systems require unusual options for compilation or linking that the
`configure' script does not know about.  Run `./configure --help' for
details on some of the pertinent environment variables.

   You can give `configure' initial values for configuration parameters
by setting variables in the command line or in the environment.  Here
is an example:

     ./configure CC=c99 CFLAGS=-g LIBS=-lposix

   *Note Defining Variables::, for more details.

Compiling For Multiple Architectures
====================================

You can compile the package for more than one kind of computer at the
same time, by placing the object files for each architecture in their
own directory.  To do this, you can use GNU `make'.  `cd' to the
directory where you want the object files and executables to go and run
the `configure' script.  `configure' automatically checks for the
source code in the directory that `configure' is in and in `..'.

   With a non-GNU `make', it is safer to compile the package for one
architecture at a time in the source code directory.  After you have
installed the package for one architecture, use `make distclean' before
reconfiguring for another architecture.

Installation Names
==================

By default, `make install' installs the package's commands under
`/usr/local/bin', include files under `/usr/local/include', etc.  You
can specify an installation prefix other than `/usr/local' by giving
`configure' the option `--prefix=PREFIX'.

   You can specify separate installation prefixes for
architecture-specific files and architecture-independent files.  If you
pass the option `--exec-prefix=PREFIX' to `configure', the package uses
PREFIX as the prefix for installing programs and libraries.
Documentation and other data files still use the regular prefix.

   In addition, if you use an unusual directory layout you can give
options like `--bindir=DIR' to specify different values for particular
kinds of files.  Run `configure --help' for a list of the directories
you can set and what kinds of files go in them.

   If the package supports it, you can cause programs to be installed
with an extra prefix or suffix on their names by giving `configure' the
option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.

Optional Features
=================

Some packages pay attention to `--enable-FEATURE' options to
`configure', where FEATURE indicates an optional part of the package.
They may also pay attention to `--with-PACKAGE' options, where PACKAGE
is something like `gnu-as' or `x' (for the X Window System).  The
`README' should mention any `--enable-' and `--with-' options that the
package recognizes.

   For packages that use the X Window System, `configure' can usually
find the X include and library files automatically, but if it doesn't,
you can use the `configure' options `--x-includes=DIR' and
`--x-libraries=DIR' to specify their locations.

Specifying the System Type
==========================

There may be some features `configure' cannot figure out automatically,
but needs to determine by the type of machine the package will run on.
Usually, assuming the package is built to be run on the _same_
architectures, `configure' can figure that out, but if it prints a
message saying it cannot guess the machine type, give it the
`--build=TYPE' option.  TYPE can either be a short name for the system
type, such as `sun4', or a canonical name which has the form:

     CPU-COMPANY-SYSTEM

where SYSTEM can have one of these forms:

     OS KERNEL-OS

   See the file `config.sub' for the possible values of each field.  If
`config.sub' isn't included in this package, then this package doesn't
need to know the machine type.

   If you are _building_ compiler tools for cross-compiling, you should
use the option `--target=TYPE' to select the type of system they will
produce code for.

   If you want to _use_ a cross compiler, that generates code for a
platform different from the build platform, you should specify the
"host" platform (i.e., that on which the generated programs will
eventually be run) with `--host=TYPE'.

Sharing Defaults
================

If you want to set default values for `configure' scripts to share, you
can create a site shell script called `config.site' that gives default
values for variables like `CC', `cache_file', and `prefix'.
`configure' looks for `PREFIX/share/config.site' if it exists, then
`PREFIX/etc/config.site' if it exists.  Or, you can set the
`CONFIG_SITE' environment variable to the location of the site script.
A warning: not all `configure' scripts look for a site script.

Defining Variables
==================

Variables not defined in a site shell script can be set in the
environment passed to `configure'.  However, some packages may run
configure again during the build, and the customized values of these
variables may be lost.  In order to avoid this problem, you should set
them in the `configure' command line, using `VAR=value'.  For example:

     ./configure CC=/usr/local2/bin/gcc

causes the specified `gcc' to be used as the C compiler (unless it is
overridden in the site shell script).

Unfortunately, this technique does not work for `CONFIG_SHELL' due to
an Autoconf bug.  Until the bug is fixed you can use this workaround:

     CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash

`configure' Invocation
======================

`configure' recognizes the following options to control how it operates.

`--help'
`-h'
     Print a summary of the options to `configure', and exit.

`--version'
`-V'
     Print the version of Autoconf used to generate the `configure'
     script, and exit.

`--cache-file=FILE'
     Enable the cache: use and save the results of the tests in FILE,
     traditionally `config.cache'.  FILE defaults to `/dev/null' to
     disable caching.

`--config-cache'
`-C'
     Alias for `--cache-file=config.cache'.

`--quiet'
`--silent'
`-q'
     Do not print messages saying which checks are being made.  To
     suppress all normal output, redirect it to `/dev/null' (any error
     messages will still be shown).

`--srcdir=DIR'
     Look for the package's source code in directory DIR.  Usually
     `configure' can determine that directory automatically.

`configure' also accepts some other, not widely useful, options.  Run
`configure --help' for more details.

Installation Instructions for Windows
*************************************

If you are compiling for MinGW or cygwin, please refer to the INSTALL file.

If you are using Microsoft Visual Studio:
- Open the relevant solution file in /msvc:
  libusb.dsw for MSVC6, libusb_2005.sln for Visual Studio 2005 or 2008,
  libusb_2010.sln for Visual Studio 2010,
  libusb_2012.sln for Visual Studio 2012 or later,
  libusb_wince.sln for Windows CE support in Visual Studio 2005.
- If you want to debug the library, uncomment the ENABLE_DEBUG_LOGGING define
  in msvc\config.h
- Select your configuration and compile the project

Note that if you are using Visual Studio Express, you may have to install the
Windows SDK to be able to compile the 64 bit version of the library.

If you are using the freely available Windows DDK/WDK (Driver Development Kit)
- If you want to debug the library, uncomment the ENABLE_DEBUG_LOGGING define
  in msvc\config.h
- Open one of the relevant Free Build or Checked Build prompt for your target
  platform
- Navigate to the msvc\ directory where the ddk_build.cmd file is located, and
  run 'ddk_build'
- To produce a DLL rather than a static library, use: 'ddk_build DLL'
- To produce a static library that uses LIBCMT[d] instead of MSVCRT[d] (/MT[d]
  vs /MD[d] in Visual Studio) use: 'ddk_build /MT'

Note that using the Windows DDK, it is possible to compile both the 32 and 64
bit versions of the library.

If you are building for Windows CE then you will need the Windows CE Standard 5.00 SDK.

Destination directories
***********************

The 32 bit binaries compiled either from Visual Studio or the DDK are placed in
a Win32\ directory at the root of the library
The 64 bit binaries are placed in an x64\ directory
Windows CE binaries are placed in one of the following directories, depending
on the target processor: ARMV4I, MIPSII, MIPSII_FP, MIPSIV, MIPSIV_FP, SH4 or x86.


Troubleshooting
***************

If the compilation process complains about missing libraries, ensure that the
default library paths for your project points to the relevant directories.
If needed, these libraries can be obtained by installing either the latest
Windows SDK or the DDK (Links provided at the end of this file).

For Windows CE it is necessary to install the CE USB Kernel Wrapper driver for
libusb to function on a device.

Links
*****

Additional information related to the Windows backend:
  http://windows.libusb.info

Latest Windows Driver (Development) Kit (WDK):
  http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=36a2630f-5d56-43b5-b996-7633f2ec14ff

Latest Microsoft Windows SDK:
  http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=c17ba869-9671-4330-a63e-1fd44e0e2505

Windows CE Standard 5.00 SDK:
  http://www.microsoft.com/en-gb/download/details.aspx?id=17310

Windows CE USB Kernel Wrapper Driver:
  https://github.com/RealVNC/CEUSBKWrapper

AUTOMAKE_OPTIONS = dist-bzip2 no-dist-gzip
ACLOCAL_AMFLAGS = -I m4
DISTCLEANFILES = libusb-1.0.pc
EXTRA_DIST = TODO PORTING msvc libusb/libusb-1.0.def libusb/version_nano.h \
  examples/getopt/getopt.c examples/getopt/getopt1.c examples/getopt/getopt.h \
  android Xcode
SUBDIRS = libusb doc

if BUILD_EXAMPLES
SUBDIRS += examples
endif

if BUILD_TESTS
SUBDIRS += tests
endif

pkgconfigdir=$(libdir)/pkgconfig
pkgconfig_DATA=libusb-1.0.pc

.PHONY: dist-up

reldir = .release/$(distdir)
dist-up: dist
	rm -rf $(reldir)
	mkdir -p $(reldir)
	cp $(distdir).tar.bz2 $(reldir)
	rsync -rv $(reldir) frs.sourceforge.net:/home/frs/project/l/li/libusb/libusb-1.0/
	rm -rf $(reldir)

For the latest libusb news, please refer to the ChangeLog file, or visit:
http://libusb.info

PORTING LIBUSB TO OTHER PLATFORMS

Introduction
============

This document is aimed at developers wishing to port libusb to unsupported
platforms. I believe the libusb API is OS-independent, so by supporting
multiple operating systems we pave the way for cross-platform USB device
drivers.

Implementation-wise, the basic idea is that you provide an interface to
libusb's internal "backend" API, which performs the appropriate operations on
your target platform.

In terms of USB I/O, your backend provides functionality to submit
asynchronous transfers (synchronous transfers are implemented in the higher
layers, based on the async interface). Your backend must also provide
functionality to cancel those transfers.

Your backend must also provide an event handling function to "reap" ongoing
transfers and process their results.

The backend must also provide standard functions for other USB operations,
e.g. setting configuration, obtaining descriptors, etc.


File descriptors for I/O polling
================================

For libusb to work, your event handling function obviously needs to be called
at various points in time. Your backend must provide a set of file descriptors
which libusb and its users can pass to poll() or select() to determine when
it is time to call the event handling function.

On Linux, this is easy: the usbfs kernel interface exposes a file descriptor
which can be passed to poll(). If something similar is not true for your
platform, you can emulate this using an internal library thread to reap I/O as
necessary, and a pipe() with the main library to raise events. The file
descriptor of the pipe can then be provided to libusb as an event source.


Interface semantics and documentation
=====================================

Documentation of the backend interface can be found in libusbi.h inside the
usbi_os_backend structure definition.

Your implementations of these functions will need to call various internal
libusb functions, prefixed with "usbi_". Documentation for these functions
can be found in the .c files where they are implemented.

You probably want to skim over *all* the documentation before starting your
implementation. For example, you probably need to allocate and store private
OS-specific data for device handles, but the documentation for the mechanism
for doing so is probably not the first thing you will see.

The Linux backend acts as a good example - view it as a reference
implementation which you should try to match the behaviour of.


Getting started
===============

1. Modify configure.ac to detect your platform appropriately (see the OS_LINUX
stuff for an example).

2. Implement your backend in the libusb/os/ directory, modifying
libusb/os/Makefile.am appropriately.

3. Add preprocessor logic to the top of libusb/core.c to statically assign the
right usbi_backend for your platform.

4. Produce and test your implementation.

5. Send your implementation to libusb-devel mailing list.


Implementation difficulties? Questions?
=======================================

If you encounter difficulties porting libusb to your platform, please raise
these issues on the libusb-devel mailing list. Where possible and sensible, I
am interested in solving problems preventing libusb from operating on other
platforms.

The libusb-devel mailing list is also a good place to ask questions and
make suggestions about the internal API. Hopefully we can produce some
better documentation based on your questions and other input.

You are encouraged to get involved in the process; if the library needs
some infrastructure additions/modifications to better support your platform,
you are encouraged to make such changes (in cleanly distinct patch
submissions). Even if you do not make such changes yourself, please do raise
the issues on the mailing list at the very minimum.

Notes related to git compilation:
--------------------------------

If you retrieved the libusb repository from git and are using a gcc based
toolchain, be mindful that you should have the autotools installed (autoconf,
automake) and will need to run either ./autogen.sh or ./bootstrap.sh to produce
the configure file.

The difference between autogen.sh and bootstrap.sh is that the former invokes
configure with a default set of options, and will therefore generate a Makefile,
whereas the latter does not invoke configure at all. If using autogen.sh, note
that you can also append options, that will be passed as is to configure.

OS X-specific notes:
-------------------

Starting with Xcode 4.3, neither Xcode.app nor the Xcode 'command line tools'
includes autotools and so running either autogen.sh or bootstrap.sh will result
in the message:

libtoolize or glibtoolize was not found! Please install libtool.

To proceed, you must find and install it from somewhere.

Alternatively, you can use the Xcode project at Xcode/libusb.xcodeproj.

Notes related to submitting new developments:
--------------------------------------------

If you submit a new development to libusb (eg: new backend), that is unlikely
to fit in a couple of small patches, we would kindly suggest that you create a
public account on github, if you don't have one already, and then fork a new
libusb repository under this account from https://github.com/libusb/libusb.

Then you can create a git branch for your work, that we will be able to better
reference and test. 

We also suggest that, if you are planning to bring in a large development, you
try to involve the libusb community early by letting the mailing list know, as
you may find that other people might be eager to help you out. 
See http://mailing-list.libusb.info for details on how to join the mailing list.

# libusb

[![Build Status](https://travis-ci.org/libusb/libusb.svg?branch=master)](https://travis-ci.org/libusb/libusb)
[![Build status](https://ci.appveyor.com/api/projects/status/xvrfam94jii4a6lw?svg=true)](https://ci.appveyor.com/project/LudovicRousseau/libusb)
[![Coverity Scan Build Status](https://scan.coverity.com/projects/2180/badge.svg)](https://scan.coverity.com/projects/libusb-libusb)

libusb is a library for USB device access from Linux, Mac OS X,
Windows, OpenBSD/NetBSD and Haiku userspace.
It is written in C (Haiku backend in C++) and licensed under the GNU
Lesser General Public License version 2.1 or, at your option, any later
version (see [COPYING](COPYING)).

libusb is abstracted internally in such a way that it can hopefully
be ported to other operating systems. Please see the [PORTING](PORTING)
file for more information.

libusb homepage:
http://libusb.info/

Developers will wish to consult the API documentation:
http://api.libusb.info

Use the mailing list for questions, comments, etc:
http://mailing-list.libusb.info

- Pete Batard <pete@akeo.ie>
- Hans de Goede <hdegoede@redhat.com>
- Xiaofan Chen <xiaofanc@gmail.com>
- Ludovic Rousseau <ludovic.rousseau@gmail.com>
- Nathan Hjelm <hjelmn@users.sourceforge.net>
- Chris Dickens <christopher.a.dickens@gmail.com>

(Please use the mailing list rather than mailing developers directly)

Please see the libusb roadmap by visiting:
https://github.com/libusb/libusb/issues/milestones?direction=asc&sort=due_date

//
// libusb Xcode configuration file
// Copyright © 2012 Pete Batard <pete@akeo.ie>
// 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

// libusb does not follow C99 strict aliasing rules, so disable it.
GCC_STRICT_ALIASING = NO

// Use C99 dialect.
GCC_C_LANGUAGE_STANDARD = c99

// Compiler warnings.
GCC_WARN_64_TO_32_BIT_CONVERSION = YES
GCC_WARN_ABOUT_RETURN_TYPE = YES
GCC_WARN_UNINITIALIZED_AUTOS = YES
GCC_WARN_FOUR_CHARACTER_CONSTANTS = YES
GCC_WARN_SHADOW = YES
GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES
GCC_WARN_ABOUT_MISSING_FIELD_INITIALIZERS = YES
GCC_WARN_ABOUT_MISSING_PROTOTYPES = YES
GCC_WARN_ABOUT_MISSING_NEWLINE = YES
GCC_WARN_UNKNOWN_PRAGMAS = YES
GCC_WARN_UNUSED_FUNCTION = YES
GCC_WARN_UNUSED_LABEL = YES
GCC_WARN_UNUSED_VARIABLE = YES
CLANG_WARN_EMPTY_BODY = YES
CLANG_WARN_CONSTANT_CONVERSION = YES
CLANG_WARN_ENUM_CONVERSION = YES
CLANG_WARN_INT_CONVERSION = YES
CLANG_WARN_DOCUMENTATION_COMMENTS = YES
CLANG_WARN_BOOL_CONVERSION = YES

// Static analyzer warnings.
CLANG_ANALYZER_SECURITY_FLOATLOOPCOUNTER = YES
CLANG_ANALYZER_SECURITY_INSECUREAPI_RAND = YES

/* config.h.  Manually generated for Xcode.  */

/* Default visibility */
#define DEFAULT_VISIBILITY /**/

/* Message logging */
#define ENABLE_LOGGING 1

/* Define to 1 if you have the `gettimeofday' function. */
#define HAVE_GETTIMEOFDAY 1

/* Define to 1 if you have the <poll.h> header file. */
#define HAVE_POLL_H 1

/* Define to 1 if you have the <sys/time.h> header file. */
#define HAVE_SYS_TIME_H 1

/* Darwin backend */
#define OS_DARWIN 1

/* type of second poll() argument */
#define POLL_NFDS_TYPE nfds_t

/* Use POSIX Threads */
#define THREADS_POSIX 1

/* Use GNU extensions */
#define _GNU_SOURCE 1

//
// libusb Xcode configuration file
// Copyright © 2012 Pete Batard <pete@akeo.ie>
// 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

#include "common.xcconfig"

// Embed debug symbols in binary itself.
DEBUG_INFORMATION_FORMAT = dwarf

// No optimizations in debug.
GCC_OPTIMIZATION_LEVEL = 0

// 
GCC_PREPROCESSOR_DEFINITIONS = $(inherited) DEBUG=1

//
// libusb Xcode configuration file
// Copyright © 2012 Pete Batard <pete@akeo.ie>
// 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

PRODUCT_NAME = libusb-1.0.0
LD_DYLIB_INSTALL_NAME = @rpath/libusb-1.0.0.dylib

// !$*UTF8*$!
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/* End XCBuildConfiguration section */

/* Begin XCConfigurationList section */
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}

//
// libusb Xcode configuration file
// Copyright © 2012 Pete Batard <pete@akeo.ie>
// 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

#include "debug.xcconfig"
#include "libusb.xcconfig"

//
// libusb Xcode configuration file
// Copyright © 2012 Pete Batard <pete@akeo.ie>
// 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

#include "release.xcconfig"
#include "libusb.xcconfig"

//
// libusb Xcode configuration file
// Copyright © 2012 Pete Batard <pete@akeo.ie>
// 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

#include "common.xcconfig"

// Put debug symbols in separate .dym file.
DEBUG_INFORMATION_FORMAT = dwarf-with-dsym

// Optimizations in release.
GCC_OPTIMIZATION_LEVEL = s
LLVM_LTO = YES

// Define NDEBUG so asserts go away in release.
GCC_PREPROCESSOR_DEFINITIONS = $(inherited) NDEBUG=1

libusb for Android
==================

Building:
---------

To build libusb for Android do the following:

 1. Download the latest NDK from:
    http://developer.android.com/tools/sdk/ndk/index.html

 2. Extract the NDK.

 3. Open a shell and make sure there exist an NDK global variable
    set to the directory where you extracted the NDK.

 4. Change directory to libusb's "android/jni"

 5. Run "$NDK/ndk-build".

The libusb library, examples and tests can then be found in:
    "android/libs/$ARCH"

Where $ARCH is one of:
    armeabi
    armeabi-v7a
    mips
    mips64
    x86
    x86_64

Installing:
-----------

If you wish to use libusb from native code in own Android application
then you should add the following line to your Android.mk file:

  include $(PATH_TO_LIBUSB_SRC)/android/jni/libusb.mk

You will then need to add the following lines to the build
configuration for each native binary which uses libusb:

  LOCAL_C_INCLUDES += $(LIBUSB_ROOT_ABS)
  LOCAL_SHARED_LIBRARIES += libusb1.0

The Android build system will then correctly include libusb in the
application package (APK) file, provided ndk-build is invoked before
the package is built.


For a rooted device it is possible to install libusb into the system
image of a running device:

 1. Enable ADB on the device.

 2. Connect the device to a machine running ADB.

 3. Execute the following commands on the machine
    running ADB:

    # Make the system partition writable
    adb shell su -c "mount -o remount,rw /system"

    # Install libusb
    adb push obj/local/armeabi/libusb1.0.so /sdcard/
    adb shell su -c "cat > /system/lib/libusb1.0.so < /sdcard/libusb1.0.so"
    adb shell rm /sdcard/libusb1.0.so

    # Install the samples and tests
    for B in listdevs fxload xusb sam3u_benchmark hotplugtest stress
    do
      adb push "obj/local/armeabi/$B" /sdcard/
      adb shell su -c "cat > /system/bin/$B < /sdcard/$B"
      adb shell su -c "chmod 0755 /system/bin/$B"
      adb shell rm "/sdcard/$B"
    done

    # Make the system partition read only again
    adb shell su -c "mount -o remount,ro /system"

    # Run listdevs to
    adb shell su -c "listdevs"

 4. If your device only has a single OTG port then ADB can generally
    be switched to using Wifi with the following commands when connected
    via USB:

    adb shell netcfg
    # Note the wifi IP address of the phone
    adb tcpip 5555
    # Use the IP address from netcfg
    adb connect 192.168.1.123:5555

Runtime Permissions:
--------------------

The default system configuration on most Android device will not allow
access to USB devices. There are several options for changing this.

If you have control of the system image then you can modify the
ueventd.rc used in the image to change the permissions on
/dev/bus/usb/*/*. If using this approach then it is advisable to
create a new Android permission to protect access to these files.
It is not advisable to give all applications read and write permissions
to these files.

For rooted devices the code using libusb could be executed as root
using the "su" command. An alternative would be to use the "su" command
to change the permissions on the appropriate /dev/bus/usb/ files.

Users have reported success in using android.hardware.usb.UsbManager
to request permission to use the UsbDevice and then opening the
device. The difficulties in this method is that there is no guarantee
that it will continue to work in the future Android versions, it
requires invoking Java APIs and running code to match each
android.hardware.usb.UsbDevice to a libusb_device.

/*
 * Android build config for libusb
 * Copyright © 2012-2013 RealVNC Ltd. <toby.gray@realvnc.com>
 *
 * 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
 */

/* Start with debug message logging enabled */
/* #undef ENABLE_DEBUG_LOGGING */

/* Message logging */
#define ENABLE_LOGGING

/* Define to 1 if you have the <dlfcn.h> header file. */
#define HAVE_DLFCN_H 1

/* Define to 1 if you have the `gettimeofday' function. */
#define HAVE_GETTIMEOFDAY 1

/* Define to 1 if you have the <inttypes.h> header file. */
#define HAVE_INTTYPES_H 1

/* Linux backend */
#define OS_LINUX 1

/* Enable output to system log */
#define USE_SYSTEM_LOGGING_FACILITY 1

/* type of second poll() argument */
#define POLL_NFDS_TYPE nfds_t

/* Use POSIX Threads */
#define THREADS_POSIX 1

/* Default visibility */
#define DEFAULT_VISIBILITY __attribute__((visibility("default")))

/* Define to 1 if you have the <memory.h> header file. */
#define HAVE_MEMORY_H 1

/* Define to 1 if you have the <poll.h> header file. */
#define HAVE_POLL_H 1

/* Define to 1 if you have the <signal.h> header file. */
#define HAVE_SIGNAL_H 1

/* Define to 1 if you have the <sys/stat.h> header file. */
#define HAVE_SYS_STAT_H 1

/* Define to 1 if you have the <sys/time.h> header file. */
#define HAVE_SYS_TIME_H 1

/* Define to 1 if you have the <sys/types.h> header file. */
#define HAVE_SYS_TYPES_H 1

/* Define to 1 if you have the <unistd.h> header file. */
#define HAVE_UNISTD_H 1

/* Define to 1 if you have the <linux/filter.h> header file. */
#define HAVE_LINUX_FILTER_H 1

/* Define to 1 if you have the <linux/netlink.h> header file. */
#define HAVE_LINUX_NETLINK_H 1

/* Define to 1 if you have the <asm/types.h> header file. */
#define HAVE_ASM_TYPES_H 1

/* Define to 1 if you have the <sys/socket.h> header file. */
#define HAVE_SYS_SOCKET_H 1

# Android build config for libusb, examples and tests
# Copyright © 2012-2013 RealVNC Ltd. <toby.gray@realvnc.com>
#
# 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
#

LOCAL_PATH:= $(call my-dir)

include $(LOCAL_PATH)/libusb.mk
include $(LOCAL_PATH)/examples.mk
include $(LOCAL_PATH)/tests.mk

# Android application build config for libusb
# Copyright © 2012-2013 RealVNC Ltd. <toby.gray@realvnc.com>
#
# 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
#

APP_ABI := all

# Workaround for MIPS toolchain linker being unable to find liblog dependency
# of shared object in NDK versions at least up to r9.
#
APP_LDFLAGS := -llog

# Android build config for libusb examples
# Copyright © 2012-2013 RealVNC Ltd. <toby.gray@realvnc.com>
#
# 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
#

LOCAL_PATH:= $(call my-dir)
LIBUSB_ROOT_REL:= ../..
LIBUSB_ROOT_ABS:= $(LOCAL_PATH)/../..

# listdevs

include $(CLEAR_VARS)

LOCAL_SRC_FILES := \
  $(LIBUSB_ROOT_REL)/examples/listdevs.c

LOCAL_C_INCLUDES += \
  $(LIBUSB_ROOT_ABS)

LOCAL_SHARED_LIBRARIES += libusb1.0

LOCAL_MODULE:= listdevs

include $(BUILD_EXECUTABLE)

# xusb

include $(CLEAR_VARS)

LOCAL_SRC_FILES := \
  $(LIBUSB_ROOT_REL)/examples/xusb.c

LOCAL_C_INCLUDES += \
  $(LIBUSB_ROOT_ABS)

LOCAL_SHARED_LIBRARIES += libusb1.0

LOCAL_MODULE:= xusb

include $(BUILD_EXECUTABLE)

# hotplugtest

include $(CLEAR_VARS)

LOCAL_SRC_FILES := \
  $(LIBUSB_ROOT_REL)/examples/hotplugtest.c

LOCAL_C_INCLUDES += \
  $(LIBUSB_ROOT_ABS)

LOCAL_SHARED_LIBRARIES += libusb1.0

LOCAL_MODULE:= hotplugtest

include $(BUILD_EXECUTABLE)

# fxload

include $(CLEAR_VARS)

LOCAL_SRC_FILES := \
  $(LIBUSB_ROOT_REL)/examples/fxload.c \
  $(LIBUSB_ROOT_REL)/examples/ezusb.c

LOCAL_C_INCLUDES += \
  $(LIBUSB_ROOT_ABS)

LOCAL_SHARED_LIBRARIES += libusb1.0

LOCAL_MODULE:= fxload

include $(BUILD_EXECUTABLE)

# sam3u_benchmake

include $(CLEAR_VARS)

LOCAL_SRC_FILES := \
  $(LIBUSB_ROOT_REL)/examples/sam3u_benchmark.c

LOCAL_C_INCLUDES += \
  $(LIBUSB_ROOT_ABS)

LOCAL_SHARED_LIBRARIES += libusb1.0

LOCAL_MODULE:= sam3u_benchmark

include $(BUILD_EXECUTABLE)

# dpfp

include $(CLEAR_VARS)

LOCAL_SRC_FILES := \
  $(LIBUSB_ROOT_REL)/examples/dpfp.c

LOCAL_C_INCLUDES += \
  $(LIBUSB_ROOT_ABS)

LOCAL_SHARED_LIBRARIES += libusb1.0

LOCAL_MODULE:= dpfp

include $(BUILD_EXECUTABLE)

# dpfp_threaded

include $(CLEAR_VARS)

LOCAL_SRC_FILES := \
  $(LIBUSB_ROOT_REL)/examples/dpfp_threaded.c

LOCAL_C_INCLUDES += \
  $(LIBUSB_ROOT_ABS)

LOCAL_SHARED_LIBRARIES += libusb1.0

LOCAL_MODULE:= dpfp_threaded

include $(BUILD_EXECUTABLE)

# Android build config for libusb
# Copyright © 2012-2013 RealVNC Ltd. <toby.gray@realvnc.com>
#
# 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
#

LOCAL_PATH:= $(call my-dir)
LIBUSB_ROOT_REL:= ../..
LIBUSB_ROOT_ABS:= $(LOCAL_PATH)/../..

# libusb

include $(CLEAR_VARS)

LIBUSB_ROOT_REL:= ../..
LIBUSB_ROOT_ABS:= $(LOCAL_PATH)/../..

LOCAL_SRC_FILES := \
  $(LIBUSB_ROOT_REL)/libusb/core.c \
  $(LIBUSB_ROOT_REL)/libusb/descriptor.c \
  $(LIBUSB_ROOT_REL)/libusb/hotplug.c \
  $(LIBUSB_ROOT_REL)/libusb/io.c \
  $(LIBUSB_ROOT_REL)/libusb/sync.c \
  $(LIBUSB_ROOT_REL)/libusb/strerror.c \
  $(LIBUSB_ROOT_REL)/libusb/os/linux_usbfs.c \
  $(LIBUSB_ROOT_REL)/libusb/os/poll_posix.c \
  $(LIBUSB_ROOT_REL)/libusb/os/threads_posix.c \
  $(LIBUSB_ROOT_REL)/libusb/os/linux_netlink.c

LOCAL_C_INCLUDES += \
  $(LOCAL_PATH)/.. \
  $(LIBUSB_ROOT_ABS)/libusb \
  $(LIBUSB_ROOT_ABS)/libusb/os

LOCAL_EXPORT_C_INCLUDES := \
  $(LIBUSB_ROOT_ABS)/libusb

LOCAL_LDLIBS := -llog

LOCAL_MODULE := libusb1.0

include $(BUILD_SHARED_LIBRARY)

# Android build config for libusb tests
# Copyright © 2012-2013 RealVNC Ltd. <toby.gray@realvnc.com>
#
# 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
#

LOCAL_PATH:= $(call my-dir)
LIBUSB_ROOT_REL:= ../..
LIBUSB_ROOT_ABS:= $(LOCAL_PATH)/../..

# testlib

include $(CLEAR_VARS)

LOCAL_SRC_FILES := \
  $(LIBUSB_ROOT_REL)/tests/testlib.c

LOCAL_C_INCLUDES += \
  $(LIBUSB_ROOT_ABS)/tests

LOCAL_EXPORT_C_INCLUDES := \
  $(LIBUSB_ROOT_ABS)/tests

LOCAL_MODULE := testlib

include $(BUILD_STATIC_LIBRARY)


# stress

include $(CLEAR_VARS)

LOCAL_SRC_FILES := \
  $(LIBUSB_ROOT_REL)/tests/stress.c

LOCAL_C_INCLUDES += \
  $(LIBUSB_ROOT_ABS)

LOCAL_SHARED_LIBRARIES += libusb1.0
LOCAL_STATIC_LIBRARIES += testlib

LOCAL_MODULE:= stress

include $(BUILD_EXECUTABLE)

version: 1.0.{build}
configuration:
- Debug
- Release
platform:
- x64
- Win32
build:
  project: msvc\libusb_2013.sln
  parallel: true
  verbosity: detailed
environment:
  matrix:
  - libusb_2015: msvc\libusb_2015.sln
    libusb_2013: msvc\libusb_2013.sln
    libusb_2012: msvc\libusb_2012.sln
    libusb_2010: msvc\libusb_2010.sln
install:

- cmd: >-
    rem Copying libusb to cygwin home directory

    xcopy /S C:\projects\libusb C:\cygwin\home\appveyor\

    rem Copying libusb to MinGW home directory

    xcopy /S C:\projects\libusb C:\msys64\home\appveyor\

build_script:
- cmd: >-
    msbuild %libusb_2015% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"

    msbuild %libusb_2013% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"

    msbuild %libusb_2012% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"

    msvc/appveyor.bat

    appveyor_minGW.bat

    appveyor_cygwin.bat

echo on
SetLocal EnableDelayedExpansion

if [%Configuration%] NEQ [Debug] goto releaseWin32

:releaseWin32
if [%Platform%] NEQ [Win32] exit 0
if [%Configuration%] NEQ [Release] exit 0
C:\cygwin\bin\bash -e -l -c "mkdir build-Win32-cygwin"
C:\cygwin\bin\bash -e -l -c ./autogen.sh
C:\cygwin\bin\bash -e -l -c "cd build-Win32-cygwin"
C:\cygwin\bin\bash -e -l -c "build-Win32-cygwin/../configure"
C:\cygwin\bin\bash -e -l -c "make -j4"
C:\cygwin\bin\bash -e -l -c "make install"

echo on
SetLocal EnableDelayedExpansion

if [%Configuration%] NEQ [Debug] goto releasex64

:releasex64
if [%Platform%] NEQ [x64] goto releaseWin32
if [%Configuration%] NEQ [Release] exit 0
C:\msys64\usr\bin\bash -e -l -c "mkdir build-x64"
C:\msys64\usr\bin\bash -e -l -c ./autogen.sh
C:\msys64\usr\bin\bash -e -l -c "cd build-x64"
C:\msys64\usr\bin\bash -e -l -c "build-x64/../configure --prefix=/mingw64 --build=--build= --host=x86_64-w64-mingw32"
C:\msys64\usr\bin\bash -e -l -c "make -j4"
C:\msys64\usr\bin\bash -e -l -c "make install"

:releaseWin32
if [%Platform%] NEQ [Win32] exit 0
if [%Configuration%] NEQ [Release] exit 0
C:\msys64\usr\bin\bash -e -l -c "mkdir build-Win32"
C:\msys64\usr\bin\bash -e -l -c ./autogen.sh
C:\msys64\usr\bin\bash -e -l -c "cd build-Win32"
C:\msys64\usr\bin\bash -e -l -c "build-Win32/../configure --prefix=/mingw32 --build=i686-w64-mingw32 --host=i686-w64-mingw32"
C:\msys64\usr\bin\bash -e -l -c "make -j4"
C:\msys64\usr\bin\bash -e -l -c "make install"

#!/bin/sh

set -e

./bootstrap.sh
if test -z "$NOCONFIGURE"; then
    exec ./configure --enable-examples-build --enable-tests-build "$@"
fi

#!/bin/sh

if ! test -d m4 ; then
    mkdir m4
fi
autoreconf -ivf || exit 1

dnl These m4 macros are whitespace sensitive and break if moved around much.
m4_define([LU_VERSION_H], m4_include([libusb/version.h]))
m4_define([LU_DEFINE_VERSION_ATOM],
	[m4_define([$1], m4_bregexp(LU_VERSION_H,
	[^#define\s*$1\s*\([0-9]*\).*], [\1]))])
m4_define([LU_DEFINE_VERSION_RC_ATOM],
	[m4_define([$1], m4_bregexp(LU_VERSION_H,
	[^#define\s*$1\s*"\(-rc[0-9]*\)".*], [\1]))])
dnl The m4_bregexp() returns (only) the numbers following the #define named
dnl in the first macro parameter. m4_define() then defines the name for use
dnl in AC_INIT.

LU_DEFINE_VERSION_ATOM([LIBUSB_MAJOR])
LU_DEFINE_VERSION_ATOM([LIBUSB_MINOR])
LU_DEFINE_VERSION_ATOM([LIBUSB_MICRO])
LU_DEFINE_VERSION_RC_ATOM([LIBUSB_RC])

AC_INIT([libusb],[LIBUSB_MAJOR[.]LIBUSB_MINOR[.]LIBUSB_MICRO[]LIBUSB_RC],[libusb-devel@lists.sourceforge.net],[libusb],[http://libusb.info])

# Library versioning
# These numbers should be tweaked on every release. Read carefully:
# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
# http://sourceware.org/autobook/autobook/autobook_91.html
lt_current="1"
lt_revision="0"
lt_age="1"
LTLDFLAGS="-version-info ${lt_current}:${lt_revision}:${lt_age}"

AM_INIT_AUTOMAKE

AC_CONFIG_SRCDIR([libusb/core.c])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_HEADERS([config.h])
m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])

AC_PREREQ([2.69])
AC_PROG_CC
AC_PROG_CXX
LT_INIT
LT_LANG([Windows Resource])
AC_C_INLINE
AM_PROG_CC_C_O
AC_DEFINE([_GNU_SOURCE], 1, [Use GNU extensions])

LTLDFLAGS="${LTLDFLAGS} -no-undefined"

AC_MSG_CHECKING([operating system])

dnl on linux-android platform, some functions are in different places
case $host in
*-linux-android*)
	AC_MSG_RESULT([This is a Linux-Android system])
	is_backend_android="yes"
	;;
*)
	is_backend_android="no"
esac

case $host in
*-linux* | *-uclinux*)
	AC_MSG_RESULT([Linux])
	backend="linux"
	threads="posix"
	;;
*-darwin*)
	AC_MSG_RESULT([Darwin/Mac OS X])
	backend="darwin"
	threads="posix"
	;;
*-openbsd*)
	AC_MSG_RESULT([OpenBSD])
	backend="openbsd"
	threads="posix"
	;;
*-netbsd*)
	AC_MSG_RESULT([NetBSD])
	backend="netbsd"
	threads="posix"
	;;
*-mingw* | *msys*)
	AC_MSG_RESULT([Windows])
	backend="windows"
	threads="windows"
	create_import_lib="yes"
	AM_CFLAGS="${AM_CFLAGS} -fno-omit-frame-pointer"
	;;
*-cygwin*)
	AC_MSG_RESULT([Cygwin (using Windows backend)])
	backend="windows"
	threads="posix"
	;;
*-haiku*)
	AC_MSG_RESULT([Haiku])
	backend="haiku"
	threads="posix"
	;;
*)
	AC_MSG_ERROR([unsupported operating system])
esac

case $backend in
linux)
	AC_DEFINE(OS_LINUX, 1, [Linux backend])
	AC_SUBST(OS_LINUX)
	AC_SEARCH_LIBS(clock_gettime, rt, [], [], -pthread)
	AC_ARG_ENABLE([udev],
		[AC_HELP_STRING([--enable-udev], [use udev for device enumeration and hotplug support (recommended) [default=yes]])],
		[], [enable_udev="yes"])
		if test "x$enable_udev" = "xyes" ; then
			# system has udev. use it or fail!
			AC_CHECK_HEADERS([libudev.h],[],[AC_ERROR(["udev support requested but libudev not installed"])])
			AC_CHECK_LIB([udev], [udev_new], [], [AC_ERROR(["udev support requested but libudev not installed"])])
			AC_DEFINE(USE_UDEV, 1, [Use udev for device enumeration/hotplug])
		else
			AC_CHECK_HEADERS([asm/types.h], [], [])
			AC_CHECK_HEADERS([sys/socket.h linux/netlink.h], [], [AC_ERROR(["Linux netlink headers not found"])], [
#ifdef HAVE_ASM_TYPES_H
#include <asm/types.h>
#endif
#include <sys/socket.h>
])
		fi
		AC_SUBST(USE_UDEV)

case $is_backend_android in
yes)
	dnl there are gettimeofday function but configure doesn't seem to be able to find it.
	AC_DEFINE([HAVE_GETTIMEOFDAY], [1], [Define if you have gettimeofday])
	;;
*)
	THREAD_CFLAGS="-pthread"
	LIBS="${LIBS} -pthread"
esac

	AC_CHECK_HEADERS([poll.h])
	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
	;;
darwin)
	AC_DEFINE(OS_DARWIN, 1, [Darwin backend])
	AC_SUBST(OS_DARWIN)
	LIBS="-lobjc -Wl,-framework,IOKit -Wl,-framework,CoreFoundation"
	LTLDFLAGS="${LTLDFLAGS} -Wl,-prebind"
	AC_CHECK_HEADERS([poll.h])
	AC_CHECK_TYPE([nfds_t],
		[AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])],
		[AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])],
		[#include <poll.h>])
	;;
openbsd)
	AC_DEFINE(OS_OPENBSD, 1, [OpenBSD backend])
	AC_SUBST(OS_OPENBSD)
	THREAD_CFLAGS="-pthread"
	LIBS="-pthread"
	AC_CHECK_HEADERS([poll.h])
	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
	;;
netbsd)
	AC_DEFINE(OS_NETBSD, 1, [NetBSD backend])
	AC_SUBST(OS_NETBSD)
	THREAD_CFLAGS="-pthread"
	LIBS="-pthread"
	AC_CHECK_HEADERS([poll.h])
	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
	;;
windows)
	AC_DEFINE(OS_WINDOWS, 1, [Windows backend])
	AC_SUBST(OS_WINDOWS)
	LIBS=""
	LTLDFLAGS="${LTLDFLAGS} -avoid-version -Wl,--add-stdcall-alias"
	AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])
	AC_DEFINE([WINVER], 0x0501, [Oldest Windows version supported])

	AC_ARG_ENABLE([usbdk],
		[AC_HELP_STRING([--enable-usbdk], [use UsbDk Windows backend [default=no]])],
		[], [enable_usbdk="no"])
		if test "x$enable_usbdk" = "xyes" ; then
		    AC_DEFINE(USE_USBDK, 1, [Use UsbDk Windows backend])
		fi
		AC_SUBST(USE_USBDK)
	;;
haiku)
	AC_DEFINE(OS_HAIKU, 1, [Haiku backend])
	AC_SUBST(OS_HAIKU)
	LIBS="${LIBS} -lbe"
	AC_CHECK_HEADERS([poll.h])
	AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
	;;
esac

AC_SUBST(LIBS)

AM_CONDITIONAL(OS_LINUX, test "x$backend" = xlinux)
AM_CONDITIONAL(OS_DARWIN, test "x$backend" = xdarwin)
AM_CONDITIONAL(OS_OPENBSD, test "x$backend" = xopenbsd)
AM_CONDITIONAL(OS_NETBSD, test "x$backend" = xnetbsd)
AM_CONDITIONAL(OS_WINDOWS, test "x$backend" = xwindows)
AM_CONDITIONAL(OS_HAIKU, test "x$backend" = xhaiku)
AM_CONDITIONAL(THREADS_POSIX, test "x$threads" = xposix)
AM_CONDITIONAL(CREATE_IMPORT_LIB, test "x$create_import_lib" = "xyes")
AM_CONDITIONAL(USE_UDEV, test "x$enable_udev" = xyes)
AM_CONDITIONAL(USE_USBDK, test "x$enable_usbdk" = xyes)
if test "$threads" = posix; then
	AC_DEFINE(THREADS_POSIX, 1, [Use POSIX Threads])
fi

# timerfd
AC_CHECK_HEADER([sys/timerfd.h], [timerfd_h=1], [timerfd_h=0])
AC_ARG_ENABLE([timerfd],
	[AS_HELP_STRING([--enable-timerfd],
		[use timerfd for timing [default=auto]])],
	[use_timerfd=$enableval], [use_timerfd='auto'])

if test "x$use_timerfd" = "xyes" -a "x$timerfd_h" = "x0"; then
	AC_MSG_ERROR([timerfd header not available; glibc 2.9+ required])
fi

AC_CHECK_DECL([TFD_NONBLOCK], [tfd_hdr_ok=yes], [tfd_hdr_ok=no], [#include <sys/timerfd.h>])
if test "x$use_timerfd" = "xyes" -a "x$tfd_hdr_ok" = "xno"; then
	AC_MSG_ERROR([timerfd header not usable; glibc 2.9+ required])
fi

AC_MSG_CHECKING([whether to use timerfd for timing])
if test "x$use_timerfd" = "xno"; then
	AC_MSG_RESULT([no (disabled by user)])
else
	if test "x$timerfd_h" = "x1" -a "x$tfd_hdr_ok" = "xyes"; then
		AC_MSG_RESULT([yes])
		AC_DEFINE(USBI_TIMERFD_AVAILABLE, 1, [timerfd headers available])
	else
		AC_MSG_RESULT([no (header not available)])
	fi
fi

AC_CHECK_TYPES(struct timespec)

# Message logging
AC_ARG_ENABLE([log], [AS_HELP_STRING([--disable-log], [disable all logging])],
	[log_enabled=$enableval],
	[log_enabled='yes'])
if test "x$log_enabled" != "xno"; then
	AC_DEFINE([ENABLE_LOGGING], 1, [Message logging])
fi

AC_ARG_ENABLE([debug-log], [AS_HELP_STRING([--enable-debug-log],
	[start with debug message logging enabled [default=no]])],
	[debug_log_enabled=$enableval],
	[debug_log_enabled='no'])
if test "x$debug_log_enabled" != "xno"; then
	AC_DEFINE([ENABLE_DEBUG_LOGGING], 1, [Start with debug message logging enabled])
fi

AC_ARG_ENABLE([system-log], [AS_HELP_STRING([--enable-system-log],
	[output logging messages to system wide log, if supported by the OS [default=no]])],
	[system_log_enabled=$enableval],
	[system_log_enabled='no'])
if test "x$system_log_enabled" != "xno"; then
	AC_DEFINE([USE_SYSTEM_LOGGING_FACILITY], 1, [Enable output to system log])
fi

# Check if syslog is available in standard C library
AC_CHECK_HEADERS(syslog.h)
AC_CHECK_FUNC([syslog], [have_syslog=yes], [have_syslog=no])
if test "x$have_syslog" != "xno"; then
	AC_DEFINE([HAVE_SYSLOG_FUNC], 1, [syslog() function available])
fi

# Examples build
AC_ARG_ENABLE([examples-build], [AS_HELP_STRING([--enable-examples-build],
	[build example applications [default=no]])],
	[build_examples=$enableval],
	[build_examples='no'])
AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != "xno"])

# Tests build
AC_ARG_ENABLE([tests-build], [AS_HELP_STRING([--enable-tests-build],
	[build test applications [default=no]])],
	[build_tests=$enableval],
	[build_tests='no'])
AM_CONDITIONAL([BUILD_TESTS], [test "x$build_tests" != "xno"])

# check for -fvisibility=hidden compiler support (GCC >= 3.4)
saved_cflags="$CFLAGS"
# -Werror required for cygwin
CFLAGS="$CFLAGS -Werror -fvisibility=hidden"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
	[VISIBILITY_CFLAGS="-fvisibility=hidden"
	 AC_DEFINE([DEFAULT_VISIBILITY], [__attribute__((visibility("default")))], [Default visibility]) ],
	[ VISIBILITY_CFLAGS=""
	 AC_DEFINE([DEFAULT_VISIBILITY], [], [Default visibility]) ],
	])
CFLAGS="$saved_cflags"

# check for -Wno-pointer-sign compiler support (GCC >= 4)
saved_cflags="$CFLAGS"
CFLAGS="$CFLAGS -Wno-pointer-sign"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
	nopointersign_cflags="-Wno-pointer-sign", nopointersign_cflags="")
CFLAGS="$saved_cflags"

# sigaction not available on MinGW
AC_CHECK_FUNC([sigaction], [have_sigaction=yes], [have_sigaction=no])
AM_CONDITIONAL([HAVE_SIGACTION], [test "x$have_sigaction" = "xyes"])

# headers not available on all platforms but required on others
AC_CHECK_HEADERS([sys/time.h])
AC_CHECK_FUNCS(gettimeofday)
AC_CHECK_HEADERS([signal.h])

# check for -std=gnu99 compiler support
saved_cflags="$CFLAGS"
CFLAGS="-std=gnu99"
AC_MSG_CHECKING([whether CC supports -std=gnu99])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
    [AC_MSG_RESULT([yes])]
    [AM_CFLAGS="${AM_CFLAGS} -std=gnu99"],
    [AC_MSG_RESULT([no])]
)
CFLAGS="$saved_cflags"

AM_CFLAGS="${AM_CFLAGS} -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags -Wshadow ${THREAD_CFLAGS} ${VISIBILITY_CFLAGS}"

AC_SUBST(AM_CFLAGS)
AC_SUBST(LTLDFLAGS)

AC_CONFIG_FILES([libusb-1.0.pc])
AC_CONFIG_FILES([Makefile])
AC_CONFIG_FILES([libusb/Makefile])
AC_CONFIG_FILES([examples/Makefile])
AC_CONFIG_FILES([tests/Makefile])
AC_CONFIG_FILES([doc/Makefile])
AC_CONFIG_FILES([doc/doxygen.cfg])
AC_OUTPUT

EXTRA_DIST = doxygen.cfg.in

docs: doxygen.cfg
	doxygen $^

docs-upload: docs
	ln -s html api-1.0
	scp -r api-1.0 pbatard@web.sourceforge.net:/home/project-web/libusb/htdocs
	rm -f api-1.0

# Doxyfile 1.8.8

# This file describes the settings to be used by the documentation system
# doxygen (www.doxygen.org) for a project.
#
# All text after a double hash (##) is considered a comment and is placed in
# front of the TAG it is preceding.
#
# All text after a single hash (#) is considered a comment and will be ignored.
# The format is:
# TAG = value [value, ...]
# For lists, items can also be appended using:
# TAG += value [value, ...]
# Values that contain spaces should be placed between quotes (\" \").

#---------------------------------------------------------------------------
# Project related configuration options
#---------------------------------------------------------------------------

# This tag specifies the encoding used for all characters in the config file
# that follow. The default is UTF-8 which is also the encoding used for all text
# before the first occurrence of this tag. Doxygen uses libiconv (or the iconv
# built into libc) for the transcoding. See http://www.gnu.org/software/libiconv
# for the list of possible encodings.
# The default value is: UTF-8.

DOXYFILE_ENCODING      = UTF-8

# The PROJECT_NAME tag is a single word (or a sequence of words surrounded by
# double-quotes, unless you are using Doxywizard) that should identify the
# project for which the documentation is generated. This name is used in the
# title of most generated pages and in a few other places.
# The default value is: My Project.

PROJECT_NAME           =

# The PROJECT_NUMBER tag can be used to enter a project or revision number. This
# could be handy for archiving the generated documentation or if some version
# control system is used.

PROJECT_NUMBER         =

# Using the PROJECT_BRIEF tag one can provide an optional one line description
# for a project that appears at the top of each page and should give viewer a
# quick idea about the purpose of the project. Keep the description short.

PROJECT_BRIEF          = "A cross-platform user library to access USB devices"

# With the PROJECT_LOGO tag one can specify an logo or icon that is included in
# the documentation. The maximum height of the logo should not exceed 55 pixels
# and the maximum width should not exceed 200 pixels. Doxygen will copy the logo
# to the output directory.

PROJECT_LOGO           = libusb.png

# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) path
# into which the generated documentation will be written. If a relative path is
# entered, it will be relative to the location where doxygen was started. If
# left blank the current directory will be used.

OUTPUT_DIRECTORY       =

# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create 4096 sub-
# directories (in 2 levels) under the output directory of each output format and
# will distribute the generated files over these directories. Enabling this
# option can be useful when feeding doxygen a huge amount of source files, where
# putting all generated files in the same directory would otherwise causes
# performance problems for the file system.
# The default value is: NO.

CREATE_SUBDIRS         = NO

# If the ALLOW_UNICODE_NAMES tag is set to YES, doxygen will allow non-ASCII
# characters to appear in the names of generated files. If set to NO, non-ASCII
# characters will be escaped, for example _xE3_x81_x84 will be used for Unicode
# U+3044.
# The default value is: NO.

ALLOW_UNICODE_NAMES    = NO

# The OUTPUT_LANGUAGE tag is used to specify the language in which all
# documentation generated by doxygen is written. Doxygen will use this
# information to generate all constant output in the proper language.
# Possible values are: Afrikaans, Arabic, Armenian, Brazilian, Catalan, Chinese,
# Chinese-Traditional, Croatian, Czech, Danish, Dutch, English (United States),
# Esperanto, Farsi (Persian), Finnish, French, German, Greek, Hungarian,
# Indonesian, Italian, Japanese, Japanese-en (Japanese with English messages),
# Korean, Korean-en (Korean with English messages), Latvian, Lithuanian,
# Macedonian, Norwegian, Persian (Farsi), Polish, Portuguese, Romanian, Russian,
# Serbian, Serbian-Cyrillic, Slovak, Slovene, Spanish, Swedish, Turkish,
# Ukrainian and Vietnamese.
# The default value is: English.

OUTPUT_LANGUAGE        = English

# If the BRIEF_MEMBER_DESC tag is set to YES doxygen will include brief member
# descriptions after the members that are listed in the file and class
# documentation (similar to Javadoc). Set to NO to disable this.
# The default value is: YES.

BRIEF_MEMBER_DESC      = YES

# If the REPEAT_BRIEF tag is set to YES doxygen will prepend the brief
# description of a member or function before the detailed description
#
# Note: If both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the
# brief descriptions will be completely suppressed.
# The default value is: YES.

REPEAT_BRIEF           = YES

# This tag implements a quasi-intelligent brief description abbreviator that is
# used to form the text in various listings. Each string in this list, if found
# as the leading text of the brief description, will be stripped from the text
# and the result, after processing the whole list, is used as the annotated
# text. Otherwise, the brief description is used as-is. If left blank, the
# following values are used ($name is automatically replaced with the name of
# the entity):The $name class, The $name widget, The $name file, is, provides,
# specifies, contains, represents, a, an and the.

ABBREVIATE_BRIEF       =

# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then
# doxygen will generate a detailed section even if there is only a brief
# description.
# The default value is: NO.

ALWAYS_DETAILED_SEC    = NO

# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all
# inherited members of a class in the documentation of that class as if those
# members were ordinary class members. Constructors, destructors and assignment
# operators of the base classes will not be shown.
# The default value is: NO.

INLINE_INHERITED_MEMB  = NO

# If the FULL_PATH_NAMES tag is set to YES doxygen will prepend the full path
# before files name in the file list and in the header files. If set to NO the
# shortest path that makes the file name unique will be used
# The default value is: YES.

FULL_PATH_NAMES        = NO

# The STRIP_FROM_PATH tag can be used to strip a user-defined part of the path.
# Stripping is only done if one of the specified strings matches the left-hand
# part of the path. The tag can be used to show relative paths in the file list.
# If left blank the directory from which doxygen is run is used as the path to
# strip.
#
# Note that you can specify absolute paths here, but also relative paths, which
# will be relative from the directory where doxygen is started.
# This tag requires that the tag FULL_PATH_NAMES is set to YES.

STRIP_FROM_PATH        =

# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of the
# path mentioned in the documentation of a class, which tells the reader which
# header file to include in order to use a class. If left blank only the name of
# the header file containing the class definition is used. Otherwise one should
# specify the list of include paths that are normally passed to the compiler
# using the -I flag.

STRIP_FROM_INC_PATH    =

# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter (but
# less readable) file names. This can be useful is your file systems doesn't
# support long names like on DOS, Mac, or CD-ROM.
# The default value is: NO.

SHORT_NAMES            = NO

# If the JAVADOC_AUTOBRIEF tag is set to YES then doxygen will interpret the
# first line (until the first dot) of a Javadoc-style comment as the brief
# description. If set to NO, the Javadoc-style will behave just like regular Qt-
# style comments (thus requiring an explicit @brief command for a brief
# description.)
# The default value is: NO.

JAVADOC_AUTOBRIEF      = YES

# If the QT_AUTOBRIEF tag is set to YES then doxygen will interpret the first
# line (until the first dot) of a Qt-style comment as the brief description. If
# set to NO, the Qt-style will behave just like regular Qt-style comments (thus
# requiring an explicit \brief command for a brief description.)
# The default value is: NO.

QT_AUTOBRIEF           = NO

# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make doxygen treat a
# multi-line C++ special comment block (i.e. a block of //! or /// comments) as
# a brief description. This used to be the default behavior. The new default is
# to treat a multi-line C++ comment block as a detailed description. Set this
# tag to YES if you prefer the old behavior instead.
#
# Note that setting this tag to YES also means that rational rose comments are
# not recognized any more.
# The default value is: NO.

MULTILINE_CPP_IS_BRIEF = NO

# If the INHERIT_DOCS tag is set to YES then an undocumented member inherits the
# documentation from any documented member that it re-implements.
# The default value is: YES.

INHERIT_DOCS           = YES

# If the SEPARATE_MEMBER_PAGES tag is set to YES, then doxygen will produce a
# new page for each member. If set to NO, the documentation of a member will be
# part of the file/class/namespace that contains it.
# The default value is: NO.

SEPARATE_MEMBER_PAGES  = NO

# The TAB_SIZE tag can be used to set the number of spaces in a tab. Doxygen
# uses this value to replace tabs by spaces in code fragments.
# Minimum value: 1, maximum value: 16, default value: 4.

TAB_SIZE               = 4

# This tag can be used to specify a number of aliases that act as commands in
# the documentation. An alias has the form:
# name=value
# For example adding
# "sideeffect=@par Side Effects:\n"
# will allow you to put the command \sideeffect (or @sideeffect) in the
# documentation, which will result in a user-defined paragraph with heading
# "Side Effects:". You can put \n's in the value part of an alias to insert
# newlines.

ALIASES                =

# This tag can be used to specify a number of word-keyword mappings (TCL only).
# A mapping has the form "name=value". For example adding "class=itcl::class"
# will allow you to use the command class in the itcl::class meaning.

TCL_SUBST              =

# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sources
# only. Doxygen will then generate output that is more tailored for C. For
# instance, some of the names that are used will be different. The list of all
# members will be omitted, etc.
# The default value is: NO.

OPTIMIZE_OUTPUT_FOR_C  = YES

# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java or
# Python sources only. Doxygen will then generate output that is more tailored
# for that language. For instance, namespaces will be presented as packages,
# qualified scopes will look different, etc.
# The default value is: NO.

OPTIMIZE_OUTPUT_JAVA   = NO

# Set the OPTIMIZE_FOR_FORTRAN tag to YES if your project consists of Fortran
# sources. Doxygen will then generate output that is tailored for Fortran.
# The default value is: NO.

OPTIMIZE_FOR_FORTRAN   = NO

# Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL
# sources. Doxygen will then generate output that is tailored for VHDL.
# The default value is: NO.

OPTIMIZE_OUTPUT_VHDL   = NO

# Doxygen selects the parser to use depending on the extension of the files it
# parses. With this tag you can assign which parser to use for a given
# extension. Doxygen has a built-in mapping, but you can override or extend it
# using this tag. The format is ext=language, where ext is a file extension, and
# language is one of the parsers supported by doxygen: IDL, Java, Javascript,
# C#, C, C++, D, PHP, Objective-C, Python, Fortran (fixed format Fortran:
# FortranFixed, free formatted Fortran: FortranFree, unknown formatted Fortran:
# Fortran. In the later case the parser tries to guess whether the code is fixed
# or free formatted code, this is the default for Fortran type files), VHDL. For
# instance to make doxygen treat .inc files as Fortran files (default is PHP),
# and .f files as C (default is Fortran), use: inc=Fortran f=C.
#
# Note For files without extension you can use no_extension as a placeholder.
#
# Note that for custom extensions you also need to set FILE_PATTERNS otherwise
# the files are not read by doxygen.

EXTENSION_MAPPING      =

# If the MARKDOWN_SUPPORT tag is enabled then doxygen pre-processes all comments
# according to the Markdown format, which allows for more readable
# documentation. See http://daringfireball.net/projects/markdown/ for details.
# The output of markdown processing is further processed by doxygen, so you can
# mix doxygen, HTML, and XML commands with Markdown formatting. Disable only in
# case of backward compatibilities issues.
# The default value is: YES.

MARKDOWN_SUPPORT       = YES

# When enabled doxygen tries to link words that correspond to documented
# classes, or namespaces to their corresponding documentation. Such a link can
# be prevented in individual cases by by putting a % sign in front of the word
# or globally by setting AUTOLINK_SUPPORT to NO.
# The default value is: YES.

AUTOLINK_SUPPORT       = YES

# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want
# to include (a tag file for) the STL sources as input, then you should set this
# tag to YES in order to let doxygen match functions declarations and
# definitions whose arguments contain STL classes (e.g. func(std::string);
# versus func(std::string) {}). This also make the inheritance and collaboration
# diagrams that involve STL classes more complete and accurate.
# The default value is: NO.

BUILTIN_STL_SUPPORT    = NO

# If you use Microsoft's C++/CLI language, you should set this option to YES to
# enable parsing support.
# The default value is: NO.

CPP_CLI_SUPPORT        = NO

# Set the SIP_SUPPORT tag to YES if your project consists of sip (see:
# http://www.riverbankcomputing.co.uk/software/sip/intro) sources only. Doxygen
# will parse them like normal C++ but will assume all classes use public instead
# of private inheritance when no explicit protection keyword is present.
# The default value is: NO.

SIP_SUPPORT            = NO

# For Microsoft's IDL there are propget and propput attributes to indicate
# getter and setter methods for a property. Setting this option to YES will make
# doxygen to replace the get and set methods by a property in the documentation.
# This will only work if the methods are indeed getting or setting a simple
# type. If this is not the case, or you want to show the methods anyway, you
# should set this option to NO.
# The default value is: YES.

IDL_PROPERTY_SUPPORT   = YES

# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC
# tag is set to YES, then doxygen will reuse the documentation of the first
# member in the group (if any) for the other members of the group. By default
# all members of a group must be documented explicitly.
# The default value is: NO.

DISTRIBUTE_GROUP_DOC   = NO

# Set the SUBGROUPING tag to YES to allow class member groups of the same type
# (for instance a group of public functions) to be put as a subgroup of that
# type (e.g. under the Public Functions section). Set it to NO to prevent
# subgrouping. Alternatively, this can be done per class using the
# \nosubgrouping command.
# The default value is: YES.

SUBGROUPING            = YES

# When the INLINE_GROUPED_CLASSES tag is set to YES, classes, structs and unions
# are shown inside the group in which they are included (e.g. using \ingroup)
# instead of on a separate page (for HTML and Man pages) or section (for LaTeX
# and RTF).
#
# Note that this feature does not work in combination with
# SEPARATE_MEMBER_PAGES.
# The default value is: NO.

INLINE_GROUPED_CLASSES = NO

# When the INLINE_SIMPLE_STRUCTS tag is set to YES, structs, classes, and unions
# with only public data fields or simple typedef fields will be shown inline in
# the documentation of the scope in which they are defined (i.e. file,
# namespace, or group documentation), provided this scope is documented. If set
# to NO, structs, classes, and unions are shown on a separate page (for HTML and
# Man pages) or section (for LaTeX and RTF).
# The default value is: NO.

INLINE_SIMPLE_STRUCTS  = NO

# When TYPEDEF_HIDES_STRUCT tag is enabled, a typedef of a struct, union, or
# enum is documented as struct, union, or enum with the name of the typedef. So
# typedef struct TypeS {} TypeT, will appear in the documentation as a struct
# with name TypeT. When disabled the typedef will appear as a member of a file,
# namespace, or class. And the struct will be named TypeS. This can typically be
# useful for C code in case the coding convention dictates that all compound
# types are typedef'ed and only the typedef is referenced, never the tag name.
# The default value is: NO.

TYPEDEF_HIDES_STRUCT   = NO

# The size of the symbol lookup cache can be set using LOOKUP_CACHE_SIZE. This
# cache is used to resolve symbols given their name and scope. Since this can be
# an expensive process and often the same symbol appears multiple times in the
# code, doxygen keeps a cache of pre-resolved symbols. If the cache is too small
# doxygen will become slower. If the cache is too large, memory is wasted. The
# cache size is given by this formula: 2^(16+LOOKUP_CACHE_SIZE). The valid range
# is 0..9, the default is 0, corresponding to a cache size of 2^16=65536
# symbols. At the end of a run doxygen will report the cache usage and suggest
# the optimal cache size from a speed point of view.
# Minimum value: 0, maximum value: 9, default value: 0.

LOOKUP_CACHE_SIZE      = 0

#---------------------------------------------------------------------------
# Build related configuration options
#---------------------------------------------------------------------------

# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in
# documentation are documented, even if no documentation was available. Private
# class members and static file members will be hidden unless the
# EXTRACT_PRIVATE respectively EXTRACT_STATIC tags are set to YES.
# Note: This will also disable the warnings about undocumented members that are
# normally produced when WARNINGS is set to YES.
# The default value is: NO.

EXTRACT_ALL            = NO

# If the EXTRACT_PRIVATE tag is set to YES all private members of a class will
# be included in the documentation.
# The default value is: NO.

EXTRACT_PRIVATE        = NO

# If the EXTRACT_PACKAGE tag is set to YES all members with package or internal
# scope will be included in the documentation.
# The default value is: NO.

EXTRACT_PACKAGE        = NO

# If the EXTRACT_STATIC tag is set to YES all static members of a file will be
# included in the documentation.
# The default value is: NO.

EXTRACT_STATIC         = YES

# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs) defined
# locally in source files will be included in the documentation. If set to NO
# only classes defined in header files are included. Does not have any effect
# for Java sources.
# The default value is: YES.

EXTRACT_LOCAL_CLASSES  = YES

# This flag is only useful for Objective-C code. When set to YES local methods,
# which are defined in the implementation section but not in the interface are
# included in the documentation. If set to NO only methods in the interface are
# included.
# The default value is: NO.

EXTRACT_LOCAL_METHODS  = NO

# If this flag is set to YES, the members of anonymous namespaces will be
# extracted and appear in the documentation as a namespace called
# 'anonymous_namespace{file}', where file will be replaced with the base name of
# the file that contains the anonymous namespace. By default anonymous namespace
# are hidden.
# The default value is: NO.

EXTRACT_ANON_NSPACES   = NO

# If the HIDE_UNDOC_MEMBERS tag is set to YES, doxygen will hide all
# undocumented members inside documented classes or files. If set to NO these
# members will be included in the various overviews, but no documentation
# section is generated. This option has no effect if EXTRACT_ALL is enabled.
# The default value is: NO.

HIDE_UNDOC_MEMBERS     = NO

# If the HIDE_UNDOC_CLASSES tag is set to YES, doxygen will hide all
# undocumented classes that are normally visible in the class hierarchy. If set
# to NO these classes will be included in the various overviews. This option has
# no effect if EXTRACT_ALL is enabled.
# The default value is: NO.

HIDE_UNDOC_CLASSES     = NO

# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, doxygen will hide all friend
# (class|struct|union) declarations. If set to NO these declarations will be
# included in the documentation.
# The default value is: NO.

HIDE_FRIEND_COMPOUNDS  = NO

# If the HIDE_IN_BODY_DOCS tag is set to YES, doxygen will hide any
# documentation blocks found inside the body of a function. If set to NO these
# blocks will be appended to the function's detailed documentation block.
# The default value is: NO.

HIDE_IN_BODY_DOCS      = NO

# The INTERNAL_DOCS tag determines if documentation that is typed after a
# \internal command is included. If the tag is set to NO then the documentation
# will be excluded. Set it to YES to include the internal documentation.
# The default value is: NO.

INTERNAL_DOCS          = NO

# If the CASE_SENSE_NAMES tag is set to NO then doxygen will only generate file
# names in lower-case letters. If set to YES upper-case letters are also
# allowed. This is useful if you have classes or files whose names only differ
# in case and if your file system supports case sensitive file names. Windows
# and Mac users are advised to set this option to NO.
# The default value is: system dependent.

CASE_SENSE_NAMES       = YES

# If the HIDE_SCOPE_NAMES tag is set to NO then doxygen will show members with
# their full class and namespace scopes in the documentation. If set to YES the
# scope will be hidden.
# The default value is: NO.

HIDE_SCOPE_NAMES       = NO

# If the SHOW_INCLUDE_FILES tag is set to YES then doxygen will put a list of
# the files that are included by a file in the documentation of that file.
# The default value is: YES.

SHOW_INCLUDE_FILES     = YES

# If the SHOW_GROUPED_MEMB_INC tag is set to YES then Doxygen will add for each
# grouped member an include statement to the documentation, telling the reader
# which file to include in order to use the member.
# The default value is: NO.

SHOW_GROUPED_MEMB_INC  = NO

# If the FORCE_LOCAL_INCLUDES tag is set to YES then doxygen will list include
# files with double quotes in the documentation rather than with sharp brackets.
# The default value is: NO.

FORCE_LOCAL_INCLUDES   = NO

# If the INLINE_INFO tag is set to YES then a tag [inline] is inserted in the
# documentation for inline members.
# The default value is: YES.

INLINE_INFO            = YES

# If the SORT_MEMBER_DOCS tag is set to YES then doxygen will sort the
# (detailed) documentation of file and class members alphabetically by member
# name. If set to NO the members will appear in declaration order.
# The default value is: YES.

SORT_MEMBER_DOCS       = NO

# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the brief
# descriptions of file, namespace and class members alphabetically by member
# name. If set to NO the members will appear in declaration order. Note that
# this will also influence the order of the classes in the class list.
# The default value is: NO.

SORT_BRIEF_DOCS        = NO

# If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen will sort the
# (brief and detailed) documentation of class members so that constructors and
# destructors are listed first. If set to NO the constructors will appear in the
# respective orders defined by SORT_BRIEF_DOCS and SORT_MEMBER_DOCS.
# Note: If SORT_BRIEF_DOCS is set to NO this option is ignored for sorting brief
# member documentation.
# Note: If SORT_MEMBER_DOCS is set to NO this option is ignored for sorting
# detailed member documentation.
# The default value is: NO.

SORT_MEMBERS_CTORS_1ST = NO

# If the SORT_GROUP_NAMES tag is set to YES then doxygen will sort the hierarchy
# of group names into alphabetical order. If set to NO the group names will
# appear in their defined order.
# The default value is: NO.

SORT_GROUP_NAMES       = NO

# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be sorted by
# fully-qualified names, including namespaces. If set to NO, the class list will
# be sorted only by class name, not including the namespace part.
# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES.
# Note: This option applies only to the class list, not to the alphabetical
# list.
# The default value is: NO.

SORT_BY_SCOPE_NAME     = NO

# If the STRICT_PROTO_MATCHING option is enabled and doxygen fails to do proper
# type resolution of all parameters of a function it will reject a match between
# the prototype and the implementation of a member function even if there is
# only one candidate or it is obvious which candidate to choose by doing a
# simple string match. By disabling STRICT_PROTO_MATCHING doxygen will still
# accept a match between prototype and implementation in such cases.
# The default value is: NO.

STRICT_PROTO_MATCHING  = NO

# The GENERATE_TODOLIST tag can be used to enable ( YES) or disable ( NO) the
# todo list. This list is created by putting \todo commands in the
# documentation.
# The default value is: YES.

GENERATE_TODOLIST      = YES

# The GENERATE_TESTLIST tag can be used to enable ( YES) or disable ( NO) the
# test list. This list is created by putting \test commands in the
# documentation.
# The default value is: YES.

GENERATE_TESTLIST      = YES

# The GENERATE_BUGLIST tag can be used to enable ( YES) or disable ( NO) the bug
# list. This list is created by putting \bug commands in the documentation.
# The default value is: YES.

GENERATE_BUGLIST       = YES

# The GENERATE_DEPRECATEDLIST tag can be used to enable ( YES) or disable ( NO)
# the deprecated list. This list is created by putting \deprecated commands in
# the documentation.
# The default value is: YES.

GENERATE_DEPRECATEDLIST= YES

# The ENABLED_SECTIONS tag can be used to enable conditional documentation
# sections, marked by \if <section_label> ... \endif and \cond <section_label>
# ... \endcond blocks.

ENABLED_SECTIONS       =

# The MAX_INITIALIZER_LINES tag determines the maximum number of lines that the
# initial value of a variable or macro / define can have for it to appear in the
# documentation. If the initializer consists of more lines than specified here
# it will be hidden. Use a value of 0 to hide initializers completely. The
# appearance of the value of individual variables and macros / defines can be
# controlled using \showinitializer or \hideinitializer command in the
# documentation regardless of this setting.
# Minimum value: 0, maximum value: 10000, default value: 30.

MAX_INITIALIZER_LINES  = 30

# Set the SHOW_USED_FILES tag to NO to disable the list of files generated at
# the bottom of the documentation of classes and structs. If set to YES the list
# will mention the files that were used to generate the documentation.
# The default value is: YES.

SHOW_USED_FILES        = YES

# Set the SHOW_FILES tag to NO to disable the generation of the Files page. This
# will remove the Files entry from the Quick Index and from the Folder Tree View
# (if specified).
# The default value is: YES.

SHOW_FILES             = YES

# Set the SHOW_NAMESPACES tag to NO to disable the generation of the Namespaces
# page. This will remove the Namespaces entry from the Quick Index and from the
# Folder Tree View (if specified).
# The default value is: YES.

SHOW_NAMESPACES        = YES

# The FILE_VERSION_FILTER tag can be used to specify a program or script that
# doxygen should invoke to get the current version for each file (typically from
# the version control system). Doxygen will invoke the program by executing (via
# popen()) the command command input-file, where command is the value of the
# FILE_VERSION_FILTER tag, and input-file is the name of an input file provided
# by doxygen. Whatever the program writes to standard output is used as the file
# version. For an example see the documentation.

FILE_VERSION_FILTER    =

# The LAYOUT_FILE tag can be used to specify a layout file which will be parsed
# by doxygen. The layout file controls the global structure of the generated
# output files in an output format independent way. To create the layout file
# that represents doxygen's defaults, run doxygen with the -l option. You can
# optionally specify a file name after the option, if omitted DoxygenLayout.xml
# will be used as the name of the layout file.
#
# Note that if you run doxygen from a directory containing a file called
# DoxygenLayout.xml, doxygen will parse it automatically even if the LAYOUT_FILE
# tag is left empty.

LAYOUT_FILE            =

# The CITE_BIB_FILES tag can be used to specify one or more bib files containing
# the reference definitions. This must be a list of .bib files. The .bib
# extension is automatically appended if omitted. This requires the bibtex tool
# to be installed. See also http://en.wikipedia.org/wiki/BibTeX for more info.
# For LaTeX the style of the bibliography can be controlled using
# LATEX_BIB_STYLE. To use this feature you need bibtex and perl available in the
# search path. See also \cite for info how to create references.

CITE_BIB_FILES         =

#---------------------------------------------------------------------------
# Configuration options related to warning and progress messages
#---------------------------------------------------------------------------

# The QUIET tag can be used to turn on/off the messages that are generated to
# standard output by doxygen. If QUIET is set to YES this implies that the
# messages are off.
# The default value is: NO.

QUIET                  = YES

# The WARNINGS tag can be used to turn on/off the warning messages that are
# generated to standard error ( stderr) by doxygen. If WARNINGS is set to YES
# this implies that the warnings are on.
#
# Tip: Turn warnings on while writing the documentation.
# The default value is: YES.

WARNINGS               = YES

# If the WARN_IF_UNDOCUMENTED tag is set to YES, then doxygen will generate
# warnings for undocumented members. If EXTRACT_ALL is set to YES then this flag
# will automatically be disabled.
# The default value is: YES.

WARN_IF_UNDOCUMENTED   = YES

# If the WARN_IF_DOC_ERROR tag is set to YES, doxygen will generate warnings for
# potential errors in the documentation, such as not documenting some parameters
# in a documented function, or documenting parameters that don't exist or using
# markup commands wrongly.
# The default value is: YES.

WARN_IF_DOC_ERROR      = YES

# This WARN_NO_PARAMDOC option can be enabled to get warnings for functions that
# are documented, but have no documentation for their parameters or return
# value. If set to NO doxygen will only warn about wrong or incomplete parameter
# documentation, but not about the absence of documentation.
# The default value is: NO.

WARN_NO_PARAMDOC       = NO

# The WARN_FORMAT tag determines the format of the warning messages that doxygen
# can produce. The string should contain the $file, $line, and $text tags, which
# will be replaced by the file and line number from which the warning originated
# and the warning text. Optionally the format may contain $version, which will
# be replaced by the version of the file (if it could be obtained via
# FILE_VERSION_FILTER)
# The default value is: $file:$line: $text.

WARN_FORMAT            = "$file:$line: $text"

# The WARN_LOGFILE tag can be used to specify a file to which warning and error
# messages should be written. If left blank the output is written to standard
# error (stderr).

WARN_LOGFILE           =

#---------------------------------------------------------------------------
# Configuration options related to the input files
#---------------------------------------------------------------------------

# The INPUT tag is used to specify the files and/or directories that contain
# documented source files. You may enter file names like myfile.cpp or
# directories like /usr/src/myproject. Separate the files or directories with
# spaces.
# Note: If this tag is empty the current directory is searched.

INPUT                  = @top_srcdir@/libusb

# This tag can be used to specify the character encoding of the source files
# that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
# libiconv (or the iconv built into libc) for the transcoding. See the libiconv
# documentation (see: http://www.gnu.org/software/libiconv) for the list of
# possible encodings.
# The default value is: UTF-8.

INPUT_ENCODING         = UTF-8

# If the value of the INPUT tag contains directories, you can use the
# FILE_PATTERNS tag to specify one or more wildcard patterns (like *.cpp and
# *.h) to filter out the source-files in the directories. If left blank the
# following patterns are tested:*.c, *.cc, *.cxx, *.cpp, *.c++, *.java, *.ii,
# *.ixx, *.ipp, *.i++, *.inl, *.idl, *.ddl, *.odl, *.h, *.hh, *.hxx, *.hpp,
# *.h++, *.cs, *.d, *.php, *.php4, *.php5, *.phtml, *.inc, *.m, *.markdown,
# *.md, *.mm, *.dox, *.py, *.f90, *.f, *.for, *.tcl, *.vhd, *.vhdl, *.ucf,
# *.qsf, *.as and *.js.

FILE_PATTERNS          =

# The RECURSIVE tag can be used to specify whether or not subdirectories should
# be searched for input files as well.
# The default value is: NO.

RECURSIVE              = NO

# The EXCLUDE tag can be used to specify files and/or directories that should be
# excluded from the INPUT source files. This way you can easily exclude a
# subdirectory from a directory tree whose root is specified with the INPUT tag.
#
# Note that relative paths are relative to the directory from which doxygen is
# run.

EXCLUDE                = @top_srcdir@/libusb/libusbi.h \
                         @top_srcdir@/libusb/hotplug.h

# The EXCLUDE_SYMLINKS tag can be used to select whether or not files or
# directories that are symbolic links (a Unix file system feature) are excluded
# from the input.
# The default value is: NO.

EXCLUDE_SYMLINKS       = NO

# If the value of the INPUT tag contains directories, you can use the
# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude
# certain files from those directories.
#
# Note that the wildcards are matched against the file with absolute path, so to
# exclude all test directories for example use the pattern */test/*

EXCLUDE_PATTERNS       =

# The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names
# (namespaces, classes, functions, etc.) that should be excluded from the
# output. The symbol name can be a fully qualified name, a word, or if the
# wildcard * is used, a substring. Examples: ANamespace, AClass,
# AClass::ANamespace, ANamespace::*Test
#
# Note that the wildcards are matched against the file with absolute path, so to
# exclude all test directories use the pattern */test/*

EXCLUDE_SYMBOLS        =

# The EXAMPLE_PATH tag can be used to specify one or more files or directories
# that contain example code fragments that are included (see the \include
# command).

EXAMPLE_PATH           =

# If the value of the EXAMPLE_PATH tag contains directories, you can use the
# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp and
# *.h) to filter out the source-files in the directories. If left blank all
# files are included.

EXAMPLE_PATTERNS       =

# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be
# searched for input files to be used with the \include or \dontinclude commands
# irrespective of the value of the RECURSIVE tag.
# The default value is: NO.

EXAMPLE_RECURSIVE      = NO

# The IMAGE_PATH tag can be used to specify one or more files or directories
# that contain images that are to be included in the documentation (see the
# \image command).

IMAGE_PATH             =

# The INPUT_FILTER tag can be used to specify a program that doxygen should
# invoke to filter for each input file. Doxygen will invoke the filter program
# by executing (via popen()) the command:
#
# <filter> <input-file>
#
# where <filter> is the value of the INPUT_FILTER tag, and <input-file> is the
# name of an input file. Doxygen will then use the output that the filter
# program writes to standard output. If FILTER_PATTERNS is specified, this tag
# will be ignored.
#
# Note that the filter must not add or remove lines; it is applied before the
# code is scanned, but not when the output code is generated. If lines are added
# or removed, the anchors will not be placed correctly.

INPUT_FILTER           =

# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern
# basis. Doxygen will compare the file name with each pattern and apply the
# filter if there is a match. The filters are a list of the form: pattern=filter
# (like *.cpp=my_cpp_filter). See INPUT_FILTER for further information on how
# filters are used. If the FILTER_PATTERNS tag is empty or if none of the
# patterns match the file name, INPUT_FILTER is applied.

FILTER_PATTERNS        =

# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using
# INPUT_FILTER ) will also be used to filter the input files that are used for
# producing the source files to browse (i.e. when SOURCE_BROWSER is set to YES).
# The default value is: NO.

FILTER_SOURCE_FILES    = NO

# The FILTER_SOURCE_PATTERNS tag can be used to specify source filters per file
# pattern. A pattern will override the setting for FILTER_PATTERN (if any) and
# it is also possible to disable source filtering for a specific pattern using
# *.ext= (so without naming a filter).
# This tag requires that the tag FILTER_SOURCE_FILES is set to YES.

FILTER_SOURCE_PATTERNS =

# If the USE_MDFILE_AS_MAINPAGE tag refers to the name of a markdown file that
# is part of the input, its contents will be placed on the main page
# (index.html). This can be useful if you have a project on for instance GitHub
# and want to reuse the introduction page also for the doxygen output.

USE_MDFILE_AS_MAINPAGE =

#---------------------------------------------------------------------------
# Configuration options related to source browsing
#---------------------------------------------------------------------------

# If the SOURCE_BROWSER tag is set to YES then a list of source files will be
# generated. Documented entities will be cross-referenced with these sources.
#
# Note: To get rid of all source code in the generated output, make sure that
# also VERBATIM_HEADERS is set to NO.
# The default value is: NO.

SOURCE_BROWSER         = NO

# Setting the INLINE_SOURCES tag to YES will include the body of functions,
# classes and enums directly into the documentation.
# The default value is: NO.

INLINE_SOURCES         = NO

# Setting the STRIP_CODE_COMMENTS tag to YES will instruct doxygen to hide any
# special comment blocks from generated source code fragments. Normal C, C++ and
# Fortran comments will always remain visible.
# The default value is: YES.

STRIP_CODE_COMMENTS    = YES

# If the REFERENCED_BY_RELATION tag is set to YES then for each documented
# function all documented functions referencing it will be listed.
# The default value is: NO.

REFERENCED_BY_RELATION = NO

# If the REFERENCES_RELATION tag is set to YES then for each documented function
# all documented entities called/used by that function will be listed.
# The default value is: NO.

REFERENCES_RELATION    = NO

# If the REFERENCES_LINK_SOURCE tag is set to YES and SOURCE_BROWSER tag is set
# to YES, then the hyperlinks from functions in REFERENCES_RELATION and
# REFERENCED_BY_RELATION lists will link to the source code. Otherwise they will
# link to the documentation.
# The default value is: YES.

REFERENCES_LINK_SOURCE = YES

# If SOURCE_TOOLTIPS is enabled (the default) then hovering a hyperlink in the
# source code will show a tooltip with additional information such as prototype,
# brief description and links to the definition and documentation. Since this
# will make the HTML file larger and loading of large files a bit slower, you
# can opt to disable this feature.
# The default value is: YES.
# This tag requires that the tag SOURCE_BROWSER is set to YES.

SOURCE_TOOLTIPS        = YES

# If the USE_HTAGS tag is set to YES then the references to source code will
# point to the HTML generated by the htags(1) tool instead of doxygen built-in
# source browser. The htags tool is part of GNU's global source tagging system
# (see http://www.gnu.org/software/global/global.html). You will need version
# 4.8.6 or higher.
#
# To use it do the following:
# - Install the latest version of global
# - Enable SOURCE_BROWSER and USE_HTAGS in the config file
# - Make sure the INPUT points to the root of the source tree
# - Run doxygen as normal
#
# Doxygen will invoke htags (and that will in turn invoke gtags), so these
# tools must be available from the command line (i.e. in the search path).
#
# The result: instead of the source browser generated by doxygen, the links to
# source code will now point to the output of htags.
# The default value is: NO.
# This tag requires that the tag SOURCE_BROWSER is set to YES.

USE_HTAGS              = NO

# If the VERBATIM_HEADERS tag is set the YES then doxygen will generate a
# verbatim copy of the header file for each class for which an include is
# specified. Set to NO to disable this.
# See also: Section \class.
# The default value is: YES.

VERBATIM_HEADERS       = YES

#---------------------------------------------------------------------------
# Configuration options related to the alphabetical class index
#---------------------------------------------------------------------------

# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index of all
# compounds will be generated. Enable this if the project contains a lot of
# classes, structs, unions or interfaces.
# The default value is: YES.

ALPHABETICAL_INDEX     = YES

# The COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns in
# which the alphabetical index list will be split.
# Minimum value: 1, maximum value: 20, default value: 5.
# This tag requires that the tag ALPHABETICAL_INDEX is set to YES.

COLS_IN_ALPHA_INDEX    = 5

# In case all classes in a project start with a common prefix, all classes will
# be put under the same header in the alphabetical index. The IGNORE_PREFIX tag
# can be used to specify a prefix (or a list of prefixes) that should be ignored
# while generating the index headers.
# This tag requires that the tag ALPHABETICAL_INDEX is set to YES.

IGNORE_PREFIX          =

#---------------------------------------------------------------------------
# Configuration options related to the HTML output
#---------------------------------------------------------------------------

# If the GENERATE_HTML tag is set to YES doxygen will generate HTML output
# The default value is: YES.

GENERATE_HTML          = YES

# The HTML_OUTPUT tag is used to specify where the HTML docs will be put. If a
# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
# it.
# The default directory is: html.
# This tag requires that the tag GENERATE_HTML is set to YES.

HTML_OUTPUT            = html

# The HTML_FILE_EXTENSION tag can be used to specify the file extension for each
# generated HTML page (for example: .htm, .php, .asp).
# The default value is: .html.
# This tag requires that the tag GENERATE_HTML is set to YES.

HTML_FILE_EXTENSION    = .html

# The HTML_HEADER tag can be used to specify a user-defined HTML header file for
# each generated HTML page. If the tag is left blank doxygen will generate a
# standard header.
#
# To get valid HTML the header file that includes any scripts and style sheets
# that doxygen needs, which is dependent on the configuration options used (e.g.
# the setting GENERATE_TREEVIEW). It is highly recommended to start with a
# default header using
# doxygen -w html new_header.html new_footer.html new_stylesheet.css
# YourConfigFile
# and then modify the file new_header.html. See also section "Doxygen usage"
# for information on how to generate the default header that doxygen normally
# uses.
# Note: The header is subject to change so you typically have to regenerate the
# default header when upgrading to a newer version of doxygen. For a description
# of the possible markers and block names see the documentation.
# This tag requires that the tag GENERATE_HTML is set to YES.

HTML_HEADER            =

# The HTML_FOOTER tag can be used to specify a user-defined HTML footer for each
# generated HTML page. If the tag is left blank doxygen will generate a standard
# footer. See HTML_HEADER for more information on how to generate a default
# footer and what special commands can be used inside the footer. See also
# section "Doxygen usage" for information on how to generate the default footer
# that doxygen normally uses.
# This tag requires that the tag GENERATE_HTML is set to YES.

HTML_FOOTER            =

# The HTML_STYLESHEET tag can be used to specify a user-defined cascading style
# sheet that is used by each HTML page. It can be used to fine-tune the look of
# the HTML output. If left blank doxygen will generate a default style sheet.
# See also section "Doxygen usage" for information on how to generate the style
# sheet that doxygen normally uses.
# Note: It is recommended to use HTML_EXTRA_STYLESHEET instead of this tag, as
# it is more robust and this tag (HTML_STYLESHEET) will in the future become
# obsolete.
# This tag requires that the tag GENERATE_HTML is set to YES.

HTML_STYLESHEET        =

# The HTML_EXTRA_STYLESHEET tag can be used to specify additional user-defined
# cascading style sheets that are included after the standard style sheets
# created by doxygen. Using this option one can overrule certain style aspects.
# This is preferred over using HTML_STYLESHEET since it does not replace the
# standard style sheet and is therefor more robust against future updates.
# Doxygen will copy the style sheet files to the output directory.
# Note: The order of the extra stylesheet files is of importance (e.g. the last
# stylesheet in the list overrules the setting of the previous ones in the
# list). For an example see the documentation.
# This tag requires that the tag GENERATE_HTML is set to YES.

HTML_EXTRA_STYLESHEET  =

# The HTML_EXTRA_FILES tag can be used to specify one or more extra images or
# other source files which should be copied to the HTML output directory. Note
# that these files will be copied to the base HTML output directory. Use the
# $relpath^ marker in the HTML_HEADER and/or HTML_FOOTER files to load these
# files. In the HTML_STYLESHEET file, use the file name only. Also note that the
# files will be copied as-is; there are no commands or markers available.
# This tag requires that the tag GENERATE_HTML is set to YES.

HTML_EXTRA_FILES       =

# The HTML_COLORSTYLE_HUE tag controls the color of the HTML output. Doxygen
# will adjust the colors in the stylesheet and background images according to
# this color. Hue is specified as an angle on a colorwheel, see
# http://en.wikipedia.org/wiki/Hue for more information. For instance the value
# 0 represents red, 60 is yellow, 120 is green, 180 is cyan, 240 is blue, 300
# purple, and 360 is red again.
# Minimum value: 0, maximum value: 359, default value: 220.
# This tag requires that the tag GENERATE_HTML is set to YES.

HTML_COLORSTYLE_HUE    = 220

# The HTML_COLORSTYLE_SAT tag controls the purity (or saturation) of the colors
# in the HTML output. For a value of 0 the output will use grayscales only. A
# value of 255 will produce the most vivid colors.
# Minimum value: 0, maximum value: 255, default value: 100.
# This tag requires that the tag GENERATE_HTML is set to YES.

HTML_COLORSTYLE_SAT    = 100

# The HTML_COLORSTYLE_GAMMA tag controls the gamma correction applied to the
# luminance component of the colors in the HTML output. Values below 100
# gradually make the output lighter, whereas values above 100 make the output
# darker. The value divided by 100 is the actual gamma applied, so 80 represents
# a gamma of 0.8, The value 220 represents a gamma of 2.2, and 100 does not
# change the gamma.
# Minimum value: 40, maximum value: 240, default value: 80.
# This tag requires that the tag GENERATE_HTML is set to YES.

HTML_COLORSTYLE_GAMMA  = 80

# If the HTML_TIMESTAMP tag is set to YES then the footer of each generated HTML
# page will contain the date and time when the page was generated. Setting this
# to NO can help when comparing the output of multiple runs.
# The default value is: YES.
# This tag requires that the tag GENERATE_HTML is set to YES.

HTML_TIMESTAMP         = YES

# If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML
# documentation will contain sections that can be hidden and shown after the
# page has loaded.
# The default value is: NO.
# This tag requires that the tag GENERATE_HTML is set to YES.

HTML_DYNAMIC_SECTIONS  = YES

# With HTML_INDEX_NUM_ENTRIES one can control the preferred number of entries
# shown in the various tree structured indices initially; the user can expand
# and collapse entries dynamically later on. Doxygen will expand the tree to
# such a level that at most the specified number of entries are visible (unless
# a fully collapsed tree already exceeds this amount). So setting the number of
# entries 1 will produce a full collapsed tree by default. 0 is a special value
# representing an infinite number of entries and will result in a full expanded
# tree by default.
# Minimum value: 0, maximum value: 9999, default value: 100.
# This tag requires that the tag GENERATE_HTML is set to YES.

HTML_INDEX_NUM_ENTRIES = 100

# If the GENERATE_DOCSET tag is set to YES, additional index files will be
# generated that can be used as input for Apple's Xcode 3 integrated development
# environment (see: http://developer.apple.com/tools/xcode/), introduced with
# OSX 10.5 (Leopard). To create a documentation set, doxygen will generate a
# Makefile in the HTML output directory. Running make will produce the docset in
# that directory and running make install will install the docset in
# ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find it at
# startup. See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html
# for more information.
# The default value is: NO.
# This tag requires that the tag GENERATE_HTML is set to YES.

GENERATE_DOCSET        = NO

# This tag determines the name of the docset feed. A documentation feed provides
# an umbrella under which multiple documentation sets from a single provider
# (such as a company or product suite) can be grouped.
# The default value is: Doxygen generated docs.
# This tag requires that the tag GENERATE_DOCSET is set to YES.

DOCSET_FEEDNAME        = "Doxygen generated docs"

# This tag specifies a string that should uniquely identify the documentation
# set bundle. This should be a reverse domain-name style string, e.g.
# com.mycompany.MyDocSet. Doxygen will append .docset to the name.
# The default value is: org.doxygen.Project.
# This tag requires that the tag GENERATE_DOCSET is set to YES.

DOCSET_BUNDLE_ID       = org.doxygen.Project

# The DOCSET_PUBLISHER_ID tag specifies a string that should uniquely identify
# the documentation publisher. This should be a reverse domain-name style
# string, e.g. com.mycompany.MyDocSet.documentation.
# The default value is: org.doxygen.Publisher.
# This tag requires that the tag GENERATE_DOCSET is set to YES.

DOCSET_PUBLISHER_ID    = org.doxygen.Publisher

# The DOCSET_PUBLISHER_NAME tag identifies the documentation publisher.
# The default value is: Publisher.
# This tag requires that the tag GENERATE_DOCSET is set to YES.

DOCSET_PUBLISHER_NAME  = Publisher

# If the GENERATE_HTMLHELP tag is set to YES then doxygen generates three
# additional HTML index files: index.hhp, index.hhc, and index.hhk. The
# index.hhp is a project file that can be read by Microsoft's HTML Help Workshop
# (see: http://www.microsoft.com/en-us/download/details.aspx?id=21138) on
# Windows.
#
# The HTML Help Workshop contains a compiler that can convert all HTML output
# generated by doxygen into a single compiled HTML file (.chm). Compiled HTML
# files are now used as the Windows 98 help format, and will replace the old
# Windows help format (.hlp) on all Windows platforms in the future. Compressed
# HTML files also contain an index, a table of contents, and you can search for
# words in the documentation. The HTML workshop also contains a viewer for
# compressed HTML files.
# The default value is: NO.
# This tag requires that the tag GENERATE_HTML is set to YES.

GENERATE_HTMLHELP      = NO

# The CHM_FILE tag can be used to specify the file name of the resulting .chm
# file. You can add a path in front of the file if the result should not be
# written to the html output directory.
# This tag requires that the tag GENERATE_HTMLHELP is set to YES.

CHM_FILE               =

# The HHC_LOCATION tag can be used to specify the location (absolute path
# including file name) of the HTML help compiler ( hhc.exe). If non-empty
# doxygen will try to run the HTML help compiler on the generated index.hhp.
# The file has to be specified with full path.
# This tag requires that the tag GENERATE_HTMLHELP is set to YES.

HHC_LOCATION           =

# The GENERATE_CHI flag controls if a separate .chi index file is generated (
# YES) or that it should be included in the master .chm file ( NO).
# The default value is: NO.
# This tag requires that the tag GENERATE_HTMLHELP is set to YES.

GENERATE_CHI           = NO

# The CHM_INDEX_ENCODING is used to encode HtmlHelp index ( hhk), content ( hhc)
# and project file content.
# This tag requires that the tag GENERATE_HTMLHELP is set to YES.

CHM_INDEX_ENCODING     =

# The BINARY_TOC flag controls whether a binary table of contents is generated (
# YES) or a normal table of contents ( NO) in the .chm file. Furthermore it
# enables the Previous and Next buttons.
# The default value is: NO.
# This tag requires that the tag GENERATE_HTMLHELP is set to YES.

BINARY_TOC             = NO

# The TOC_EXPAND flag can be set to YES to add extra items for group members to
# the table of contents of the HTML help documentation and to the tree view.
# The default value is: NO.
# This tag requires that the tag GENERATE_HTMLHELP is set to YES.

TOC_EXPAND             = NO

# If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and
# QHP_VIRTUAL_FOLDER are set, an additional index file will be generated that
# can be used as input for Qt's qhelpgenerator to generate a Qt Compressed Help
# (.qch) of the generated HTML documentation.
# The default value is: NO.
# This tag requires that the tag GENERATE_HTML is set to YES.

GENERATE_QHP           = NO

# If the QHG_LOCATION tag is specified, the QCH_FILE tag can be used to specify
# the file name of the resulting .qch file. The path specified is relative to
# the HTML output folder.
# This tag requires that the tag GENERATE_QHP is set to YES.

QCH_FILE               =

# The QHP_NAMESPACE tag specifies the namespace to use when generating Qt Help
# Project output. For more information please see Qt Help Project / Namespace
# (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#namespace).
# The default value is: org.doxygen.Project.
# This tag requires that the tag GENERATE_QHP is set to YES.

QHP_NAMESPACE          = org.doxygen.Project

# The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating Qt
# Help Project output. For more information please see Qt Help Project / Virtual
# Folders (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#virtual-
# folders).
# The default value is: doc.
# This tag requires that the tag GENERATE_QHP is set to YES.

QHP_VIRTUAL_FOLDER     = doc

# If the QHP_CUST_FILTER_NAME tag is set, it specifies the name of a custom
# filter to add. For more information please see Qt Help Project / Custom
# Filters (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#custom-
# filters).
# This tag requires that the tag GENERATE_QHP is set to YES.

QHP_CUST_FILTER_NAME   =

# The QHP_CUST_FILTER_ATTRS tag specifies the list of the attributes of the
# custom filter to add. For more information please see Qt Help Project / Custom
# Filters (see: http://qt-project.org/doc/qt-4.8/qthelpproject.html#custom-
# filters).
# This tag requires that the tag GENERATE_QHP is set to YES.

QHP_CUST_FILTER_ATTRS  =

# The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this
# project's filter section matches. Qt Help Project / Filter Attributes (see:
# http://qt-project.org/doc/qt-4.8/qthelpproject.html#filter-attributes).
# This tag requires that the tag GENERATE_QHP is set to YES.

QHP_SECT_FILTER_ATTRS  =

# The QHG_LOCATION tag can be used to specify the location of Qt's
# qhelpgenerator. If non-empty doxygen will try to run qhelpgenerator on the
# generated .qhp file.
# This tag requires that the tag GENERATE_QHP is set to YES.

QHG_LOCATION           =

# If the GENERATE_ECLIPSEHELP tag is set to YES, additional index files will be
# generated, together with the HTML files, they form an Eclipse help plugin. To
# install this plugin and make it available under the help contents menu in
# Eclipse, the contents of the directory containing the HTML and XML files needs
# to be copied into the plugins directory of eclipse. The name of the directory
# within the plugins directory should be the same as the ECLIPSE_DOC_ID value.
# After copying Eclipse needs to be restarted before the help appears.
# The default value is: NO.
# This tag requires that the tag GENERATE_HTML is set to YES.

GENERATE_ECLIPSEHELP   = NO

# A unique identifier for the Eclipse help plugin. When installing the plugin
# the directory name containing the HTML and XML files should also have this
# name. Each documentation set should have its own identifier.
# The default value is: org.doxygen.Project.
# This tag requires that the tag GENERATE_ECLIPSEHELP is set to YES.

ECLIPSE_DOC_ID         = org.doxygen.Project

# If you want full control over the layout of the generated HTML pages it might
# be necessary to disable the index and replace it with your own. The
# DISABLE_INDEX tag can be used to turn on/off the condensed index (tabs) at top
# of each HTML page. A value of NO enables the index and the value YES disables
# it. Since the tabs in the index contain the same information as the navigation
# tree, you can set this option to YES if you also set GENERATE_TREEVIEW to YES.
# The default value is: NO.
# This tag requires that the tag GENERATE_HTML is set to YES.

DISABLE_INDEX          = NO

# The GENERATE_TREEVIEW tag is used to specify whether a tree-like index
# structure should be generated to display hierarchical information. If the tag
# value is set to YES, a side panel will be generated containing a tree-like
# index structure (just like the one that is generated for HTML Help). For this
# to work a browser that supports JavaScript, DHTML, CSS and frames is required
# (i.e. any modern browser). Windows users are probably better off using the
# HTML help feature. Via custom stylesheets (see HTML_EXTRA_STYLESHEET) one can
# further fine-tune the look of the index. As an example, the default style
# sheet generated by doxygen has an example that shows how to put an image at
# the root of the tree instead of the PROJECT_NAME. Since the tree basically has
# the same information as the tab index, you could consider setting
# DISABLE_INDEX to YES when enabling this option.
# The default value is: NO.
# This tag requires that the tag GENERATE_HTML is set to YES.

GENERATE_TREEVIEW      = NO

# The ENUM_VALUES_PER_LINE tag can be used to set the number of enum values that
# doxygen will group on one line in the generated HTML documentation.
#
# Note that a value of 0 will completely suppress the enum values from appearing
# in the overview section.
# Minimum value: 0, maximum value: 20, default value: 4.
# This tag requires that the tag GENERATE_HTML is set to YES.

ENUM_VALUES_PER_LINE   = 4

# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be used
# to set the initial width (in pixels) of the frame in which the tree is shown.
# Minimum value: 0, maximum value: 1500, default value: 250.
# This tag requires that the tag GENERATE_HTML is set to YES.

TREEVIEW_WIDTH         = 250

# When the EXT_LINKS_IN_WINDOW option is set to YES doxygen will open links to
# external symbols imported via tag files in a separate window.
# The default value is: NO.
# This tag requires that the tag GENERATE_HTML is set to YES.

EXT_LINKS_IN_WINDOW    = NO

# Use this tag to change the font size of LaTeX formulas included as images in
# the HTML documentation. When you change the font size after a successful
# doxygen run you need to manually remove any form_*.png images from the HTML
# output directory to force them to be regenerated.
# Minimum value: 8, maximum value: 50, default value: 10.
# This tag requires that the tag GENERATE_HTML is set to YES.

FORMULA_FONTSIZE       = 10

# Use the FORMULA_TRANPARENT tag to determine whether or not the images
# generated for formulas are transparent PNGs. Transparent PNGs are not
# supported properly for IE 6.0, but are supported on all modern browsers.
#
# Note that when changing this option you need to delete any form_*.png files in
# the HTML output directory before the changes have effect.
# The default value is: YES.
# This tag requires that the tag GENERATE_HTML is set to YES.

FORMULA_TRANSPARENT    = YES

# Enable the USE_MATHJAX option to render LaTeX formulas using MathJax (see
# http://www.mathjax.org) which uses client side Javascript for the rendering
# instead of using prerendered bitmaps. Use this if you do not have LaTeX
# installed or if you want to formulas look prettier in the HTML output. When
# enabled you may also need to install MathJax separately and configure the path
# to it using the MATHJAX_RELPATH option.
# The default value is: NO.
# This tag requires that the tag GENERATE_HTML is set to YES.

USE_MATHJAX            = NO

# When MathJax is enabled you can set the default output format to be used for
# the MathJax output. See the MathJax site (see:
# http://docs.mathjax.org/en/latest/output.html) for more details.
# Possible values are: HTML-CSS (which is slower, but has the best
# compatibility), NativeMML (i.e. MathML) and SVG.
# The default value is: HTML-CSS.
# This tag requires that the tag USE_MATHJAX is set to YES.

MATHJAX_FORMAT         = HTML-CSS

# When MathJax is enabled you need to specify the location relative to the HTML
# output directory using the MATHJAX_RELPATH option. The destination directory
# should contain the MathJax.js script. For instance, if the mathjax directory
# is located at the same level as the HTML output directory, then
# MATHJAX_RELPATH should be ../mathjax. The default value points to the MathJax
# Content Delivery Network so you can quickly see the result without installing
# MathJax. However, it is strongly recommended to install a local copy of
# MathJax from http://www.mathjax.org before deployment.
# The default value is: http://cdn.mathjax.org/mathjax/latest.
# This tag requires that the tag USE_MATHJAX is set to YES.

MATHJAX_RELPATH        = http://cdn.mathjax.org/mathjax/latest

# The MATHJAX_EXTENSIONS tag can be used to specify one or more MathJax
# extension names that should be enabled during MathJax rendering. For example
# MATHJAX_EXTENSIONS = TeX/AMSmath TeX/AMSsymbols
# This tag requires that the tag USE_MATHJAX is set to YES.

MATHJAX_EXTENSIONS     =

# The MATHJAX_CODEFILE tag can be used to specify a file with javascript pieces
# of code that will be used on startup of the MathJax code. See the MathJax site
# (see: http://docs.mathjax.org/en/latest/output.html) for more details. For an
# example see the documentation.
# This tag requires that the tag USE_MATHJAX is set to YES.

MATHJAX_CODEFILE       =

# When the SEARCHENGINE tag is enabled doxygen will generate a search box for
# the HTML output. The underlying search engine uses javascript and DHTML and
# should work on any modern browser. Note that when using HTML help
# (GENERATE_HTMLHELP), Qt help (GENERATE_QHP), or docsets (GENERATE_DOCSET)
# there is already a search function so this one should typically be disabled.
# For large projects the javascript based search engine can be slow, then
# enabling SERVER_BASED_SEARCH may provide a better solution. It is possible to
# search using the keyboard; to jump to the search box use <access key> + S
# (what the <access key> is depends on the OS and browser, but it is typically
# <CTRL>, <ALT>/<option>, or both). Inside the search box use the <cursor down
# key> to jump into the search results window, the results can be navigated
# using the <cursor keys>. Press <Enter> to select an item or <escape> to cancel
# the search. The filter options can be selected when the cursor is inside the
# search box by pressing <Shift>+<cursor down>. Also here use the <cursor keys>
# to select a filter and <Enter> or <escape> to activate or cancel the filter
# option.
# The default value is: YES.
# This tag requires that the tag GENERATE_HTML is set to YES.

SEARCHENGINE           = NO

# When the SERVER_BASED_SEARCH tag is enabled the search engine will be
# implemented using a web server instead of a web client using Javascript. There
# are two flavors of web server based searching depending on the EXTERNAL_SEARCH
# setting. When disabled, doxygen will generate a PHP script for searching and
# an index file used by the script. When EXTERNAL_SEARCH is enabled the indexing
# and searching needs to be provided by external tools. See the section
# "External Indexing and Searching" for details.
# The default value is: NO.
# This tag requires that the tag SEARCHENGINE is set to YES.

SERVER_BASED_SEARCH    = NO

# When EXTERNAL_SEARCH tag is enabled doxygen will no longer generate the PHP
# script for searching. Instead the search results are written to an XML file
# which needs to be processed by an external indexer. Doxygen will invoke an
# external search engine pointed to by the SEARCHENGINE_URL option to obtain the
# search results.
#
# Doxygen ships with an example indexer ( doxyindexer) and search engine
# (doxysearch.cgi) which are based on the open source search engine library
# Xapian (see: http://xapian.org/).
#
# See the section "External Indexing and Searching" for details.
# The default value is: NO.
# This tag requires that the tag SEARCHENGINE is set to YES.

EXTERNAL_SEARCH        = NO

# The SEARCHENGINE_URL should point to a search engine hosted by a web server
# which will return the search results when EXTERNAL_SEARCH is enabled.
#
# Doxygen ships with an example indexer ( doxyindexer) and search engine
# (doxysearch.cgi) which are based on the open source search engine library
# Xapian (see: http://xapian.org/). See the section "External Indexing and
# Searching" for details.
# This tag requires that the tag SEARCHENGINE is set to YES.

SEARCHENGINE_URL       =

# When SERVER_BASED_SEARCH and EXTERNAL_SEARCH are both enabled the unindexed
# search data is written to a file for indexing by an external tool. With the
# SEARCHDATA_FILE tag the name of this file can be specified.
# The default file is: searchdata.xml.
# This tag requires that the tag SEARCHENGINE is set to YES.

SEARCHDATA_FILE        = searchdata.xml

# When SERVER_BASED_SEARCH and EXTERNAL_SEARCH are both enabled the
# EXTERNAL_SEARCH_ID tag can be used as an identifier for the project. This is
# useful in combination with EXTRA_SEARCH_MAPPINGS to search through multiple
# projects and redirect the results back to the right project.
# This tag requires that the tag SEARCHENGINE is set to YES.

EXTERNAL_SEARCH_ID     =

# The EXTRA_SEARCH_MAPPINGS tag can be used to enable searching through doxygen
# projects other than the one defined by this configuration file, but that are
# all added to the same external search index. Each project needs to have a
# unique id set via EXTERNAL_SEARCH_ID. The search mapping then maps the id of
# to a relative location where the documentation can be found. The format is:
# EXTRA_SEARCH_MAPPINGS = tagname1=loc1 tagname2=loc2 ...
# This tag requires that the tag SEARCHENGINE is set to YES.

EXTRA_SEARCH_MAPPINGS  =

#---------------------------------------------------------------------------
# Configuration options related to the LaTeX output
#---------------------------------------------------------------------------

# If the GENERATE_LATEX tag is set to YES doxygen will generate LaTeX output.
# The default value is: YES.

GENERATE_LATEX         = NO

# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. If a
# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
# it.
# The default directory is: latex.
# This tag requires that the tag GENERATE_LATEX is set to YES.

LATEX_OUTPUT           = latex

# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be
# invoked.
#
# Note that when enabling USE_PDFLATEX this option is only used for generating
# bitmaps for formulas in the HTML output, but not in the Makefile that is
# written to the output directory.
# The default file is: latex.
# This tag requires that the tag GENERATE_LATEX is set to YES.

LATEX_CMD_NAME         = latex

# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to generate
# index for LaTeX.
# The default file is: makeindex.
# This tag requires that the tag GENERATE_LATEX is set to YES.

MAKEINDEX_CMD_NAME     = makeindex

# If the COMPACT_LATEX tag is set to YES doxygen generates more compact LaTeX
# documents. This may be useful for small projects and may help to save some
# trees in general.
# The default value is: NO.
# This tag requires that the tag GENERATE_LATEX is set to YES.

COMPACT_LATEX          = NO

# The PAPER_TYPE tag can be used to set the paper type that is used by the
# printer.
# Possible values are: a4 (210 x 297 mm), letter (8.5 x 11 inches), legal (8.5 x
# 14 inches) and executive (7.25 x 10.5 inches).
# The default value is: a4.
# This tag requires that the tag GENERATE_LATEX is set to YES.

PAPER_TYPE             = a4wide

# The EXTRA_PACKAGES tag can be used to specify one or more LaTeX package names
# that should be included in the LaTeX output. To get the times font for
# instance you can specify
# EXTRA_PACKAGES=times
# If left blank no extra packages will be included.
# This tag requires that the tag GENERATE_LATEX is set to YES.

EXTRA_PACKAGES         =

# The LATEX_HEADER tag can be used to specify a personal LaTeX header for the
# generated LaTeX document. The header should contain everything until the first
# chapter. If it is left blank doxygen will generate a standard header. See
# section "Doxygen usage" for information on how to let doxygen write the
# default header to a separate file.
#
# Note: Only use a user-defined header if you know what you are doing! The
# following commands have a special meaning inside the header: $title,
# $datetime, $date, $doxygenversion, $projectname, $projectnumber,
# $projectbrief, $projectlogo. Doxygen will replace $title with the empy string,
# for the replacement values of the other commands the user is refered to
# HTML_HEADER.
# This tag requires that the tag GENERATE_LATEX is set to YES.

LATEX_HEADER           =

# The LATEX_FOOTER tag can be used to specify a personal LaTeX footer for the
# generated LaTeX document. The footer should contain everything after the last
# chapter. If it is left blank doxygen will generate a standard footer. See
# LATEX_HEADER for more information on how to generate a default footer and what
# special commands can be used inside the footer.
#
# Note: Only use a user-defined footer if you know what you are doing!
# This tag requires that the tag GENERATE_LATEX is set to YES.

LATEX_FOOTER           =

# The LATEX_EXTRA_FILES tag can be used to specify one or more extra images or
# other source files which should be copied to the LATEX_OUTPUT output
# directory. Note that the files will be copied as-is; there are no commands or
# markers available.
# This tag requires that the tag GENERATE_LATEX is set to YES.

LATEX_EXTRA_FILES      =

# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated is
# prepared for conversion to PDF (using ps2pdf or pdflatex). The PDF file will
# contain links (just like the HTML output) instead of page references. This
# makes the output suitable for online browsing using a PDF viewer.
# The default value is: YES.
# This tag requires that the tag GENERATE_LATEX is set to YES.

PDF_HYPERLINKS         = NO

# If the USE_PDFLATEX tag is set to YES, doxygen will use pdflatex to generate
# the PDF file directly from the LaTeX files. Set this option to YES to get a
# higher quality PDF documentation.
# The default value is: YES.
# This tag requires that the tag GENERATE_LATEX is set to YES.

USE_PDFLATEX           = NO

# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \batchmode
# command to the generated LaTeX files. This will instruct LaTeX to keep running
# if errors occur, instead of asking the user for help. This option is also used
# when generating formulas in HTML.
# The default value is: NO.
# This tag requires that the tag GENERATE_LATEX is set to YES.

LATEX_BATCHMODE        = NO

# If the LATEX_HIDE_INDICES tag is set to YES then doxygen will not include the
# index chapters (such as File Index, Compound Index, etc.) in the output.
# The default value is: NO.
# This tag requires that the tag GENERATE_LATEX is set to YES.

LATEX_HIDE_INDICES     = NO

# If the LATEX_SOURCE_CODE tag is set to YES then doxygen will include source
# code with syntax highlighting in the LaTeX output.
#
# Note that which sources are shown also depends on other settings such as
# SOURCE_BROWSER.
# The default value is: NO.
# This tag requires that the tag GENERATE_LATEX is set to YES.

LATEX_SOURCE_CODE      = NO

# The LATEX_BIB_STYLE tag can be used to specify the style to use for the
# bibliography, e.g. plainnat, or ieeetr. See
# http://en.wikipedia.org/wiki/BibTeX and \cite for more info.
# The default value is: plain.
# This tag requires that the tag GENERATE_LATEX is set to YES.

LATEX_BIB_STYLE        = plain

#---------------------------------------------------------------------------
# Configuration options related to the RTF output
#---------------------------------------------------------------------------

# If the GENERATE_RTF tag is set to YES doxygen will generate RTF output. The
# RTF output is optimized for Word 97 and may not look too pretty with other RTF
# readers/editors.
# The default value is: NO.

GENERATE_RTF           = NO

# The RTF_OUTPUT tag is used to specify where the RTF docs will be put. If a
# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
# it.
# The default directory is: rtf.
# This tag requires that the tag GENERATE_RTF is set to YES.

RTF_OUTPUT             = rtf

# If the COMPACT_RTF tag is set to YES doxygen generates more compact RTF
# documents. This may be useful for small projects and may help to save some
# trees in general.
# The default value is: NO.
# This tag requires that the tag GENERATE_RTF is set to YES.

COMPACT_RTF            = NO

# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated will
# contain hyperlink fields. The RTF file will contain links (just like the HTML
# output) instead of page references. This makes the output suitable for online
# browsing using Word or some other Word compatible readers that support those
# fields.
#
# Note: WordPad (write) and others do not support links.
# The default value is: NO.
# This tag requires that the tag GENERATE_RTF is set to YES.

RTF_HYPERLINKS         = NO

# Load stylesheet definitions from file. Syntax is similar to doxygen's config
# file, i.e. a series of assignments. You only have to provide replacements,
# missing definitions are set to their default value.
#
# See also section "Doxygen usage" for information on how to generate the
# default style sheet that doxygen normally uses.
# This tag requires that the tag GENERATE_RTF is set to YES.

RTF_STYLESHEET_FILE    =

# Set optional variables used in the generation of an RTF document. Syntax is
# similar to doxygen's config file. A template extensions file can be generated
# using doxygen -e rtf extensionFile.
# This tag requires that the tag GENERATE_RTF is set to YES.

RTF_EXTENSIONS_FILE    =

#---------------------------------------------------------------------------
# Configuration options related to the man page output
#---------------------------------------------------------------------------

# If the GENERATE_MAN tag is set to YES doxygen will generate man pages for
# classes and files.
# The default value is: NO.

GENERATE_MAN           = NO

# The MAN_OUTPUT tag is used to specify where the man pages will be put. If a
# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
# it. A directory man3 will be created inside the directory specified by
# MAN_OUTPUT.
# The default directory is: man.
# This tag requires that the tag GENERATE_MAN is set to YES.

MAN_OUTPUT             = man

# The MAN_EXTENSION tag determines the extension that is added to the generated
# man pages. In case the manual section does not start with a number, the number
# 3 is prepended. The dot (.) at the beginning of the MAN_EXTENSION tag is
# optional.
# The default value is: .3.
# This tag requires that the tag GENERATE_MAN is set to YES.

MAN_EXTENSION          = .3

# The MAN_SUBDIR tag determines the name of the directory created within
# MAN_OUTPUT in which the man pages are placed. If defaults to man followed by
# MAN_EXTENSION with the initial . removed.
# This tag requires that the tag GENERATE_MAN is set to YES.

MAN_SUBDIR             =

# If the MAN_LINKS tag is set to YES and doxygen generates man output, then it
# will generate one additional man file for each entity documented in the real
# man page(s). These additional files only source the real man page, but without
# them the man command would be unable to find the correct page.
# The default value is: NO.
# This tag requires that the tag GENERATE_MAN is set to YES.

MAN_LINKS              = NO

#---------------------------------------------------------------------------
# Configuration options related to the XML output
#---------------------------------------------------------------------------

# If the GENERATE_XML tag is set to YES doxygen will generate an XML file that
# captures the structure of the code including all documentation.
# The default value is: NO.

GENERATE_XML           = NO

# The XML_OUTPUT tag is used to specify where the XML pages will be put. If a
# relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
# it.
# The default directory is: xml.
# This tag requires that the tag GENERATE_XML is set to YES.

XML_OUTPUT             = xml

# If the XML_PROGRAMLISTING tag is set to YES doxygen will dump the program
# listings (including syntax highlighting and cross-referencing information) to
# the XML output. Note that enabling this will significantly increase the size
# of the XML output.
# The default value is: YES.
# This tag requires that the tag GENERATE_XML is set to YES.

XML_PROGRAMLISTING     = YES

#---------------------------------------------------------------------------
# Configuration options related to the DOCBOOK output
#---------------------------------------------------------------------------

# If the GENERATE_DOCBOOK tag is set to YES doxygen will generate Docbook files
# that can be used to generate PDF.
# The default value is: NO.

GENERATE_DOCBOOK       = NO

# The DOCBOOK_OUTPUT tag is used to specify where the Docbook pages will be put.
# If a relative path is entered the value of OUTPUT_DIRECTORY will be put in
# front of it.
# The default directory is: docbook.
# This tag requires that the tag GENERATE_DOCBOOK is set to YES.

DOCBOOK_OUTPUT         = docbook

# If the DOCBOOK_PROGRAMLISTING tag is set to YES doxygen will include the
# program listings (including syntax highlighting and cross-referencing
# information) to the DOCBOOK output. Note that enabling this will significantly
# increase the size of the DOCBOOK output.
# The default value is: NO.
# This tag requires that the tag GENERATE_DOCBOOK is set to YES.

DOCBOOK_PROGRAMLISTING = NO

#---------------------------------------------------------------------------
# Configuration options for the AutoGen Definitions output
#---------------------------------------------------------------------------

# If the GENERATE_AUTOGEN_DEF tag is set to YES doxygen will generate an AutoGen
# Definitions (see http://autogen.sf.net) file that captures the structure of
# the code including all documentation. Note that this feature is still
# experimental and incomplete at the moment.
# The default value is: NO.

GENERATE_AUTOGEN_DEF   = NO

#---------------------------------------------------------------------------
# Configuration options related to the Perl module output
#---------------------------------------------------------------------------

# If the GENERATE_PERLMOD tag is set to YES doxygen will generate a Perl module
# file that captures the structure of the code including all documentation.
#
# Note that this feature is still experimental and incomplete at the moment.
# The default value is: NO.

GENERATE_PERLMOD       = NO

# If the PERLMOD_LATEX tag is set to YES doxygen will generate the necessary
# Makefile rules, Perl scripts and LaTeX code to be able to generate PDF and DVI
# output from the Perl module output.
# The default value is: NO.
# This tag requires that the tag GENERATE_PERLMOD is set to YES.

PERLMOD_LATEX          = NO

# If the PERLMOD_PRETTY tag is set to YES the Perl module output will be nicely
# formatted so it can be parsed by a human reader. This is useful if you want to
# understand what is going on. On the other hand, if this tag is set to NO the
# size of the Perl module output will be much smaller and Perl will parse it
# just the same.
# The default value is: YES.
# This tag requires that the tag GENERATE_PERLMOD is set to YES.

PERLMOD_PRETTY         = YES

# The names of the make variables in the generated doxyrules.make file are
# prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX. This is useful
# so different doxyrules.make files included by the same Makefile don't
# overwrite each other's variables.
# This tag requires that the tag GENERATE_PERLMOD is set to YES.

PERLMOD_MAKEVAR_PREFIX =

#---------------------------------------------------------------------------
# Configuration options related to the preprocessor
#---------------------------------------------------------------------------

# If the ENABLE_PREPROCESSING tag is set to YES doxygen will evaluate all
# C-preprocessor directives found in the sources and include files.
# The default value is: YES.

ENABLE_PREPROCESSING   = YES

# If the MACRO_EXPANSION tag is set to YES doxygen will expand all macro names
# in the source code. If set to NO only conditional compilation will be
# performed. Macro expansion can be done in a controlled way by setting
# EXPAND_ONLY_PREDEF to YES.
# The default value is: NO.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.

MACRO_EXPANSION        = YES

# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES then
# the macro expansion is limited to the macros specified with the PREDEFINED and
# EXPAND_AS_DEFINED tags.
# The default value is: NO.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.

EXPAND_ONLY_PREDEF     = YES

# If the SEARCH_INCLUDES tag is set to YES the includes files in the
# INCLUDE_PATH will be searched if a #include is found.
# The default value is: YES.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.

SEARCH_INCLUDES        = YES

# The INCLUDE_PATH tag can be used to specify one or more directories that
# contain include files that are not input files but should be processed by the
# preprocessor.
# This tag requires that the tag SEARCH_INCLUDES is set to YES.

INCLUDE_PATH           =

# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard
# patterns (like *.h and *.hpp) to filter out the header-files in the
# directories. If left blank, the patterns specified with FILE_PATTERNS will be
# used.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.

INCLUDE_FILE_PATTERNS  =

# The PREDEFINED tag can be used to specify one or more macro names that are
# defined before the preprocessor is started (similar to the -D option of e.g.
# gcc). The argument of the tag is a list of macros of the form: name or
# name=definition (no spaces). If the definition and the "=" are omitted, "=1"
# is assumed. To prevent a macro definition from being undefined via #undef or
# recursively expanded use the := operator instead of the = operator.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.

PREDEFINED             = API_EXPORTED= \
                         LIBUSB_CALL= \
                         DEFAULT_VISIBILITY=

# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
# tag can be used to specify a list of macro names that should be expanded. The
# macro definition that is found in the sources will be used. Use the PREDEFINED
# tag if you want to use a different macro definition that overrules the
# definition found in the source code.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.

EXPAND_AS_DEFINED      =

# If the SKIP_FUNCTION_MACROS tag is set to YES then doxygen's preprocessor will
# remove all references to function-like macros that are alone on a line, have
# an all uppercase name, and do not end with a semicolon. Such function macros
# are typically used for boiler-plate code, and will confuse the parser if not
# removed.
# The default value is: YES.
# This tag requires that the tag ENABLE_PREPROCESSING is set to YES.

SKIP_FUNCTION_MACROS   = YES

#---------------------------------------------------------------------------
# Configuration options related to external references
#---------------------------------------------------------------------------

# The TAGFILES tag can be used to specify one or more tag files. For each tag
# file the location of the external documentation should be added. The format of
# a tag file without this location is as follows:
# TAGFILES = file1 file2 ...
# Adding location for the tag files is done as follows:
# TAGFILES = file1=loc1 "file2 = loc2" ...
# where loc1 and loc2 can be relative or absolute paths or URLs. See the
# section "Linking to external documentation" for more information about the use
# of tag files.
# Note: Each tag file must have a unique name (where the name does NOT include
# the path). If a tag file is not located in the directory in which doxygen is
# run, you must also specify the path to the tagfile here.

TAGFILES               =

# When a file name is specified after GENERATE_TAGFILE, doxygen will create a
# tag file that is based on the input files it reads. See section "Linking to
# external documentation" for more information about the usage of tag files.

GENERATE_TAGFILE       =

# If the ALLEXTERNALS tag is set to YES all external class will be listed in the
# class index. If set to NO only the inherited external classes will be listed.
# The default value is: NO.

ALLEXTERNALS           = NO

# If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed in
# the modules index. If set to NO, only the current project's groups will be
# listed.
# The default value is: YES.

EXTERNAL_GROUPS        = YES

# If the EXTERNAL_PAGES tag is set to YES all external pages will be listed in
# the related pages index. If set to NO, only the current project's pages will
# be listed.
# The default value is: YES.

EXTERNAL_PAGES         = YES

# The PERL_PATH should be the absolute path and name of the perl script
# interpreter (i.e. the result of 'which perl').
# The default file (with absolute path) is: /usr/bin/perl.

PERL_PATH              = /usr/bin/perl

#---------------------------------------------------------------------------
# Configuration options related to the dot tool
#---------------------------------------------------------------------------

# If the CLASS_DIAGRAMS tag is set to YES doxygen will generate a class diagram
# (in HTML and LaTeX) for classes with base or super classes. Setting the tag to
# NO turns the diagrams off. Note that this option also works with HAVE_DOT
# disabled, but it is recommended to install and use dot, since it yields more
# powerful graphs.
# The default value is: YES.

CLASS_DIAGRAMS         = YES

# You can define message sequence charts within doxygen comments using the \msc
# command. Doxygen will then run the mscgen tool (see:
# http://www.mcternan.me.uk/mscgen/)) to produce the chart and insert it in the
# documentation. The MSCGEN_PATH tag allows you to specify the directory where
# the mscgen tool resides. If left empty the tool is assumed to be found in the
# default search path.

MSCGEN_PATH            =

# You can include diagrams made with dia in doxygen documentation. Doxygen will
# then run dia to produce the diagram and insert it in the documentation. The
# DIA_PATH tag allows you to specify the directory where the dia binary resides.
# If left empty dia is assumed to be found in the default search path.

DIA_PATH               =

# If set to YES, the inheritance and collaboration graphs will hide inheritance
# and usage relations if the target is undocumented or is not a class.
# The default value is: YES.

HIDE_UNDOC_RELATIONS   = YES

# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is
# available from the path. This tool is part of Graphviz (see:
# http://www.graphviz.org/), a graph visualization toolkit from AT&T and Lucent
# Bell Labs. The other options in this section have no effect if this option is
# set to NO
# The default value is: NO.

HAVE_DOT               = NO

# The DOT_NUM_THREADS specifies the number of dot invocations doxygen is allowed
# to run in parallel. When set to 0 doxygen will base this on the number of
# processors available in the system. You can set it explicitly to a value
# larger than 0 to get control over the balance between CPU load and processing
# speed.
# Minimum value: 0, maximum value: 32, default value: 0.
# This tag requires that the tag HAVE_DOT is set to YES.

DOT_NUM_THREADS        = 0

# When you want a differently looking font in the dot files that doxygen
# generates you can specify the font name using DOT_FONTNAME. You need to make
# sure dot is able to find the font, which can be done by putting it in a
# standard location or by setting the DOTFONTPATH environment variable or by
# setting DOT_FONTPATH to the directory containing the font.
# The default value is: Helvetica.
# This tag requires that the tag HAVE_DOT is set to YES.

DOT_FONTNAME           = Helvetica

# The DOT_FONTSIZE tag can be used to set the size (in points) of the font of
# dot graphs.
# Minimum value: 4, maximum value: 24, default value: 10.
# This tag requires that the tag HAVE_DOT is set to YES.

DOT_FONTSIZE           = 10

# By default doxygen will tell dot to use the default font as specified with
# DOT_FONTNAME. If you specify a different font using DOT_FONTNAME you can set
# the path where dot can find it using this tag.
# This tag requires that the tag HAVE_DOT is set to YES.

DOT_FONTPATH           =

# If the CLASS_GRAPH tag is set to YES then doxygen will generate a graph for
# each documented class showing the direct and indirect inheritance relations.
# Setting this tag to YES will force the CLASS_DIAGRAMS tag to NO.
# The default value is: YES.
# This tag requires that the tag HAVE_DOT is set to YES.

CLASS_GRAPH            = YES

# If the COLLABORATION_GRAPH tag is set to YES then doxygen will generate a
# graph for each documented class showing the direct and indirect implementation
# dependencies (inheritance, containment, and class references variables) of the
# class with other documented classes.
# The default value is: YES.
# This tag requires that the tag HAVE_DOT is set to YES.

COLLABORATION_GRAPH    = YES

# If the GROUP_GRAPHS tag is set to YES then doxygen will generate a graph for
# groups, showing the direct groups dependencies.
# The default value is: YES.
# This tag requires that the tag HAVE_DOT is set to YES.

GROUP_GRAPHS           = YES

# If the UML_LOOK tag is set to YES doxygen will generate inheritance and
# collaboration diagrams in a style similar to the OMG's Unified Modeling
# Language.
# The default value is: NO.
# This tag requires that the tag HAVE_DOT is set to YES.

UML_LOOK               = NO

# If the UML_LOOK tag is enabled, the fields and methods are shown inside the
# class node. If there are many fields or methods and many nodes the graph may
# become too big to be useful. The UML_LIMIT_NUM_FIELDS threshold limits the
# number of items for each type to make the size more manageable. Set this to 0
# for no limit. Note that the threshold may be exceeded by 50% before the limit
# is enforced. So when you set the threshold to 10, up to 15 fields may appear,
# but if the number exceeds 15, the total amount of fields shown is limited to
# 10.
# Minimum value: 0, maximum value: 100, default value: 10.
# This tag requires that the tag HAVE_DOT is set to YES.

UML_LIMIT_NUM_FIELDS   = 10

# If the TEMPLATE_RELATIONS tag is set to YES then the inheritance and
# collaboration graphs will show the relations between templates and their
# instances.
# The default value is: NO.
# This tag requires that the tag HAVE_DOT is set to YES.

TEMPLATE_RELATIONS     = NO

# If the INCLUDE_GRAPH, ENABLE_PREPROCESSING and SEARCH_INCLUDES tags are set to
# YES then doxygen will generate a graph for each documented file showing the
# direct and indirect include dependencies of the file with other documented
# files.
# The default value is: YES.
# This tag requires that the tag HAVE_DOT is set to YES.

INCLUDE_GRAPH          = YES

# If the INCLUDED_BY_GRAPH, ENABLE_PREPROCESSING and SEARCH_INCLUDES tags are
# set to YES then doxygen will generate a graph for each documented file showing
# the direct and indirect include dependencies of the file with other documented
# files.
# The default value is: YES.
# This tag requires that the tag HAVE_DOT is set to YES.

INCLUDED_BY_GRAPH      = YES

# If the CALL_GRAPH tag is set to YES then doxygen will generate a call
# dependency graph for every global function or class method.
#
# Note that enabling this option will significantly increase the time of a run.
# So in most cases it will be better to enable call graphs for selected
# functions only using the \callgraph command.
# The default value is: NO.
# This tag requires that the tag HAVE_DOT is set to YES.

CALL_GRAPH             = NO

# If the CALLER_GRAPH tag is set to YES then doxygen will generate a caller
# dependency graph for every global function or class method.
#
# Note that enabling this option will significantly increase the time of a run.
# So in most cases it will be better to enable caller graphs for selected
# functions only using the \callergraph command.
# The default value is: NO.
# This tag requires that the tag HAVE_DOT is set to YES.

CALLER_GRAPH           = NO

# If the GRAPHICAL_HIERARCHY tag is set to YES then doxygen will graphical
# hierarchy of all classes instead of a textual one.
# The default value is: YES.
# This tag requires that the tag HAVE_DOT is set to YES.

GRAPHICAL_HIERARCHY    = YES

# If the DIRECTORY_GRAPH tag is set to YES then doxygen will show the
# dependencies a directory has on other directories in a graphical way. The
# dependency relations are determined by the #include relations between the
# files in the directories.
# The default value is: YES.
# This tag requires that the tag HAVE_DOT is set to YES.

DIRECTORY_GRAPH        = YES

# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images
# generated by dot.
# Note: If you choose svg you need to set HTML_FILE_EXTENSION to xhtml in order
# to make the SVG files visible in IE 9+ (other browsers do not have this
# requirement).
# Possible values are: png, jpg, gif and svg.
# The default value is: png.
# This tag requires that the tag HAVE_DOT is set to YES.

DOT_IMAGE_FORMAT       = png

# If DOT_IMAGE_FORMAT is set to svg, then this option can be set to YES to
# enable generation of interactive SVG images that allow zooming and panning.
#
# Note that this requires a modern browser other than Internet Explorer. Tested
# and working are Firefox, Chrome, Safari, and Opera.
# Note: For IE 9+ you need to set HTML_FILE_EXTENSION to xhtml in order to make
# the SVG files visible. Older versions of IE do not have SVG support.
# The default value is: NO.
# This tag requires that the tag HAVE_DOT is set to YES.

INTERACTIVE_SVG        = NO

# The DOT_PATH tag can be used to specify the path where the dot tool can be
# found. If left blank, it is assumed the dot tool can be found in the path.
# This tag requires that the tag HAVE_DOT is set to YES.

DOT_PATH               =

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DOTFILE_DIRS           =

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MSCFILE_DIRS           =

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# contain dia files that are included in the documentation (see the \diafile
# command).

DIAFILE_DIRS           =

# When using plantuml, the PLANTUML_JAR_PATH tag should be used to specify the
# path where java can find the plantuml.jar file. If left blank, it is assumed
# PlantUML is not used or called during a preprocessing step. Doxygen will
# generate a warning when it encounters a \startuml command in this case and
# will not generate output for the diagram.
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PLANTUML_JAR_PATH      =

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DOT_GRAPH_MAX_NODES    = 50

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# generated by dot. A depth value of 3 means that only nodes reachable from the
# root by following a path via at most 3 edges will be shown. Nodes that lay
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# note that the size of a graph can be further restricted by
# DOT_GRAPH_MAX_NODES. Using a depth of 0 means no depth restriction.
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AM_CPPFLAGS = -I$(top_srcdir)/libusb
LDADD = ../libusb/libusb-1.0.la

noinst_PROGRAMS = listdevs xusb fxload hotplugtest

if HAVE_SIGACTION
noinst_PROGRAMS += dpfp

if THREADS_POSIX
dpfp_threaded_CFLAGS = $(AM_CFLAGS)
noinst_PROGRAMS += dpfp_threaded
endif

sam3u_benchmark_SOURCES = sam3u_benchmark.c
noinst_PROGRAMS += sam3u_benchmark
endif

fxload_SOURCES = ezusb.c ezusb.h fxload.c
fxload_CFLAGS = $(THREAD_CFLAGS) $(AM_CFLAGS)

/*
 * libusb example program to manipulate U.are.U 4000B fingerprint scanner.
 * Copyright © 2007 Daniel Drake <dsd@gentoo.org>
 *
 * Basic image capture program only, does not consider the powerup quirks or
 * the fact that image encryption may be enabled. Not expected to work
 * flawlessly all of the time.
 *
 * 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
 */

#include <errno.h>
#include <signal.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>

#include "libusb.h"

#define EP_INTR			(1 | LIBUSB_ENDPOINT_IN)
#define EP_DATA			(2 | LIBUSB_ENDPOINT_IN)
#define CTRL_IN			(LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN)
#define CTRL_OUT		(LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT)
#define USB_RQ			0x04
#define INTR_LENGTH		64

enum {
	MODE_INIT = 0x00,
	MODE_AWAIT_FINGER_ON = 0x10,
	MODE_AWAIT_FINGER_OFF = 0x12,
	MODE_CAPTURE = 0x20,
	MODE_SHUT_UP = 0x30,
	MODE_READY = 0x80,
};

static int next_state(void);

enum {
	STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON = 1,
	STATE_AWAIT_IRQ_FINGER_DETECTED,
	STATE_AWAIT_MODE_CHANGE_CAPTURE,
	STATE_AWAIT_IMAGE,
	STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF,
	STATE_AWAIT_IRQ_FINGER_REMOVED,
};

static int state = 0;
static struct libusb_device_handle *devh = NULL;
static unsigned char imgbuf[0x1b340];
static unsigned char irqbuf[INTR_LENGTH];
static struct libusb_transfer *img_transfer = NULL;
static struct libusb_transfer *irq_transfer = NULL;
static int img_idx = 0;
static int do_exit = 0;

static int find_dpfp_device(void)
{
	devh = libusb_open_device_with_vid_pid(NULL, 0x05ba, 0x000a);
	return devh ? 0 : -EIO;
}

static int print_f0_data(void)
{
	unsigned char data[0x10];
	int r;
	unsigned int i;

	r = libusb_control_transfer(devh, CTRL_IN, USB_RQ, 0xf0, 0, data,
		sizeof(data), 0);
	if (r < 0) {
		fprintf(stderr, "F0 error %d\n", r);
		return r;
	}
	if ((unsigned int) r < sizeof(data)) {
		fprintf(stderr, "short read (%d)\n", r);
		return -1;
	}

	printf("F0 data:");
	for (i = 0; i < sizeof(data); i++)
		printf("%02x ", data[i]);
	printf("\n");
	return 0;
}

static int get_hwstat(unsigned char *status)
{
	int r;

	r = libusb_control_transfer(devh, CTRL_IN, USB_RQ, 0x07, 0, status, 1, 0);
	if (r < 0) {
		fprintf(stderr, "read hwstat error %d\n", r);
		return r;
	}
	if ((unsigned int) r < 1) {
		fprintf(stderr, "short read (%d)\n", r);
		return -1;
	}

	printf("hwstat reads %02x\n", *status);
	return 0;
}

static int set_hwstat(unsigned char data)
{
	int r;

	printf("set hwstat to %02x\n", data);
	r = libusb_control_transfer(devh, CTRL_OUT, USB_RQ, 0x07, 0, &data, 1, 0);
	if (r < 0) {
		fprintf(stderr, "set hwstat error %d\n", r);
		return r;
	}
	if ((unsigned int) r < 1) {
		fprintf(stderr, "short write (%d)", r);
		return -1;
	}

	return 0;
}

static int set_mode(unsigned char data)
{
	int r;
	printf("set mode %02x\n", data);

	r = libusb_control_transfer(devh, CTRL_OUT, USB_RQ, 0x4e, 0, &data, 1, 0);
	if (r < 0) {
		fprintf(stderr, "set mode error %d\n", r);
		return r;
	}
	if ((unsigned int) r < 1) {
		fprintf(stderr, "short write (%d)", r);
		return -1;
	}

	return 0;
}

static void LIBUSB_CALL cb_mode_changed(struct libusb_transfer *transfer)
{
	if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
		fprintf(stderr, "mode change transfer not completed!\n");
		do_exit = 2;
	}

	printf("async cb_mode_changed length=%d actual_length=%d\n",
		transfer->length, transfer->actual_length);
	if (next_state() < 0)
		do_exit = 2;
}

static int set_mode_async(unsigned char data)
{
	unsigned char *buf = (unsigned char*) malloc(LIBUSB_CONTROL_SETUP_SIZE + 1);
	struct libusb_transfer *transfer;

	if (!buf)
		return -ENOMEM;

	transfer = libusb_alloc_transfer(0);
	if (!transfer) {
		free(buf);
		return -ENOMEM;
	}

	printf("async set mode %02x\n", data);
	libusb_fill_control_setup(buf, CTRL_OUT, USB_RQ, 0x4e, 0, 1);
	buf[LIBUSB_CONTROL_SETUP_SIZE] = data;
	libusb_fill_control_transfer(transfer, devh, buf, cb_mode_changed, NULL,
		1000);

	transfer->flags = LIBUSB_TRANSFER_SHORT_NOT_OK
		| LIBUSB_TRANSFER_FREE_BUFFER | LIBUSB_TRANSFER_FREE_TRANSFER;
	return libusb_submit_transfer(transfer);
}

static int do_sync_intr(unsigned char *data)
{
	int r;
	int transferred;

	r = libusb_interrupt_transfer(devh, EP_INTR, data, INTR_LENGTH,
		&transferred, 1000);
	if (r < 0) {
		fprintf(stderr, "intr error %d\n", r);
		return r;
	}
	if (transferred < INTR_LENGTH) {
		fprintf(stderr, "short read (%d)\n", r);
		return -1;
	}

	printf("recv interrupt %04x\n", *((uint16_t *) data));
	return 0;
}

static int sync_intr(unsigned char type)
{
	int r;
	unsigned char data[INTR_LENGTH];

	while (1) {
		r = do_sync_intr(data);
		if (r < 0)
			return r;
		if (data[0] == type)
			return 0;
	}
}

static int save_to_file(unsigned char *data)
{
	FILE *fd;
	char filename[64];

	snprintf(filename, sizeof(filename), "finger%d.pgm", img_idx++);
	fd = fopen(filename, "w");
	if (!fd)
		return -1;

	fputs("P5 384 289 255 ", fd);
	(void) fwrite(data + 64, 1, 384*289, fd);
	fclose(fd);
	printf("saved image to %s\n", filename);
	return 0;
}

static int next_state(void)
{
	int r = 0;
	printf("old state: %d\n", state);
	switch (state) {
	case STATE_AWAIT_IRQ_FINGER_REMOVED:
		state = STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON;
		r = set_mode_async(MODE_AWAIT_FINGER_ON);
		break;
	case STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON:
		state = STATE_AWAIT_IRQ_FINGER_DETECTED;
		break;
	case STATE_AWAIT_IRQ_FINGER_DETECTED:
		state = STATE_AWAIT_MODE_CHANGE_CAPTURE;
		r = set_mode_async(MODE_CAPTURE);
		break;
	case STATE_AWAIT_MODE_CHANGE_CAPTURE:
		state = STATE_AWAIT_IMAGE;
		break;
	case STATE_AWAIT_IMAGE:
		state = STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF;
		r = set_mode_async(MODE_AWAIT_FINGER_OFF);
		break;
	case STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF:
		state = STATE_AWAIT_IRQ_FINGER_REMOVED;
		break;
	default:
		printf("unrecognised state %d\n", state);
	}
	if (r < 0) {
		fprintf(stderr, "error detected changing state\n");
		return r;
	}

	printf("new state: %d\n", state);
	return 0;
}

static void LIBUSB_CALL cb_irq(struct libusb_transfer *transfer)
{
	unsigned char irqtype = transfer->buffer[0];

	if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
		fprintf(stderr, "irq transfer status %d?\n", transfer->status);
		do_exit = 2;
		libusb_free_transfer(transfer);
		irq_transfer = NULL;
		return;
	}

	printf("IRQ callback %02x\n", irqtype);
	switch (state) {
	case STATE_AWAIT_IRQ_FINGER_DETECTED:
		if (irqtype == 0x01) {
			if (next_state() < 0) {
				do_exit = 2;
				return;
			}
		} else {
			printf("finger-on-sensor detected in wrong state!\n");
		}
		break;
	case STATE_AWAIT_IRQ_FINGER_REMOVED:
		if (irqtype == 0x02) {
			if (next_state() < 0) {
				do_exit = 2;
				return;
			}
		} else {
			printf("finger-on-sensor detected in wrong state!\n");
		}
		break;
	}
	if (libusb_submit_transfer(irq_transfer) < 0)
		do_exit = 2;
}

static void LIBUSB_CALL cb_img(struct libusb_transfer *transfer)
{
	if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
		fprintf(stderr, "img transfer status %d?\n", transfer->status);
		do_exit = 2;
		libusb_free_transfer(transfer);
		img_transfer = NULL;
		return;
	}

	printf("Image callback\n");
	save_to_file(imgbuf);
	if (next_state() < 0) {
		do_exit = 2;
		return;
	}
	if (libusb_submit_transfer(img_transfer) < 0)
		do_exit = 2;
}

static int init_capture(void)
{
	int r;

	r = libusb_submit_transfer(irq_transfer);
	if (r < 0)
		return r;

	r = libusb_submit_transfer(img_transfer);
	if (r < 0) {
		libusb_cancel_transfer(irq_transfer);
		while (irq_transfer)
			if (libusb_handle_events(NULL) < 0)
				break;
		return r;
	}

	/* start state machine */
	state = STATE_AWAIT_IRQ_FINGER_REMOVED;
	return next_state();
}

static int do_init(void)
{
	unsigned char status;
	int r;

	r = get_hwstat(&status);
	if (r < 0)
		return r;

	if (!(status & 0x80)) {
		r = set_hwstat(status | 0x80);
		if (r < 0)
			return r;
		r = get_hwstat(&status);
		if (r < 0)
			return r;
	}

	status &= ~0x80;
	r = set_hwstat(status);
	if (r < 0)
		return r;

	r = get_hwstat(&status);
	if (r < 0)
		return r;

	r = sync_intr(0x56);
	if (r < 0)
		return r;

	return 0;
}

static int alloc_transfers(void)
{
	img_transfer = libusb_alloc_transfer(0);
	if (!img_transfer)
		return -ENOMEM;

	irq_transfer = libusb_alloc_transfer(0);
	if (!irq_transfer)
		return -ENOMEM;

	libusb_fill_bulk_transfer(img_transfer, devh, EP_DATA, imgbuf,
		sizeof(imgbuf), cb_img, NULL, 0);
	libusb_fill_interrupt_transfer(irq_transfer, devh, EP_INTR, irqbuf,
		sizeof(irqbuf), cb_irq, NULL, 0);

	return 0;
}

static void sighandler(int signum)
{
	do_exit = 1;
}

int main(void)
{
	struct sigaction sigact;
	int r = 1;

	r = libusb_init(NULL);
	if (r < 0) {
		fprintf(stderr, "failed to initialise libusb\n");
		exit(1);
	}

	r = find_dpfp_device();
	if (r < 0) {
		fprintf(stderr, "Could not find/open device\n");
		goto out;
	}

	r = libusb_claim_interface(devh, 0);
	if (r < 0) {
		fprintf(stderr, "usb_claim_interface error %d\n", r);
		goto out;
	}
	printf("claimed interface\n");

	r = print_f0_data();
	if (r < 0)
		goto out_release;

	r = do_init();
	if (r < 0)
		goto out_deinit;

	/* async from here onwards */

	r = alloc_transfers();
	if (r < 0)
		goto out_deinit;

	r = init_capture();
	if (r < 0)
		goto out_deinit;

	sigact.sa_handler = sighandler;
	sigemptyset(&sigact.sa_mask);
	sigact.sa_flags = 0;
	sigaction(SIGINT, &sigact, NULL);
	sigaction(SIGTERM, &sigact, NULL);
	sigaction(SIGQUIT, &sigact, NULL);

	while (!do_exit) {
		r = libusb_handle_events(NULL);
		if (r < 0)
			goto out_deinit;
	}

	printf("shutting down...\n");

	if (irq_transfer) {
		r = libusb_cancel_transfer(irq_transfer);
		if (r < 0)
			goto out_deinit;
	}

	if (img_transfer) {
		r = libusb_cancel_transfer(img_transfer);
		if (r < 0)
			goto out_deinit;
	}

	while (irq_transfer || img_transfer)
		if (libusb_handle_events(NULL) < 0)
			break;

	if (do_exit == 1)
		r = 0;
	else
		r = 1;

out_deinit:
	libusb_free_transfer(img_transfer);
	libusb_free_transfer(irq_transfer);
	set_mode(0);
	set_hwstat(0x80);
out_release:
	libusb_release_interface(devh, 0);
out:
	libusb_close(devh);
	libusb_exit(NULL);
	return r >= 0 ? r : -r;
}

/*
 * libusb example program to manipulate U.are.U 4000B fingerprint scanner.
 * Copyright © 2007 Daniel Drake <dsd@gentoo.org>
 *
 * Basic image capture program only, does not consider the powerup quirks or
 * the fact that image encryption may be enabled. Not expected to work
 * flawlessly all of the time.
 *
 * 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
 */

#include <errno.h>
#include <pthread.h>
#include <semaphore.h>
#include <signal.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>

#include "libusb.h"

#define EP_INTR			(1 | LIBUSB_ENDPOINT_IN)
#define EP_DATA			(2 | LIBUSB_ENDPOINT_IN)
#define CTRL_IN			(LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN)
#define CTRL_OUT		(LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT)
#define USB_RQ			0x04
#define INTR_LENGTH		64

enum {
	MODE_INIT = 0x00,
	MODE_AWAIT_FINGER_ON = 0x10,
	MODE_AWAIT_FINGER_OFF = 0x12,
	MODE_CAPTURE = 0x20,
	MODE_SHUT_UP = 0x30,
	MODE_READY = 0x80,
};

static int next_state(void);

enum {
	STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON = 1,
	STATE_AWAIT_IRQ_FINGER_DETECTED,
	STATE_AWAIT_MODE_CHANGE_CAPTURE,
	STATE_AWAIT_IMAGE,
	STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF,
	STATE_AWAIT_IRQ_FINGER_REMOVED,
};

static int state = 0;
static struct libusb_device_handle *devh = NULL;
static unsigned char imgbuf[0x1b340];
static unsigned char irqbuf[INTR_LENGTH];
static struct libusb_transfer *img_transfer = NULL;
static struct libusb_transfer *irq_transfer = NULL;
static int img_idx = 0;
static volatile sig_atomic_t do_exit = 0;

static pthread_t poll_thread;
static sem_t exit_sem;

static void request_exit(sig_atomic_t code)
{
	do_exit = code;
	sem_post(&exit_sem);
}

static void *poll_thread_main(void *arg)
{
	int r = 0;
	printf("poll thread running\n");

	while (!do_exit) {
		struct timeval tv = { 1, 0 };
		r = libusb_handle_events_timeout(NULL, &tv);
		if (r < 0) {
			request_exit(2);
			break;
		}
	}

	printf("poll thread shutting down\n");
	return NULL;
}

static int find_dpfp_device(void)
{
	devh = libusb_open_device_with_vid_pid(NULL, 0x05ba, 0x000a);
	return devh ? 0 : -EIO;
}

static int print_f0_data(void)
{
	unsigned char data[0x10];
	int r;
	unsigned int i;

	r = libusb_control_transfer(devh, CTRL_IN, USB_RQ, 0xf0, 0, data,
		sizeof(data), 0);
	if (r < 0) {
		fprintf(stderr, "F0 error %d\n", r);
		return r;
	}
	if ((unsigned int) r < sizeof(data)) {
		fprintf(stderr, "short read (%d)\n", r);
		return -1;
	}

	printf("F0 data:");
	for (i = 0; i < sizeof(data); i++)
		printf("%02x ", data[i]);
	printf("\n");
	return 0;
}

static int get_hwstat(unsigned char *status)
{
	int r;

	r = libusb_control_transfer(devh, CTRL_IN, USB_RQ, 0x07, 0, status, 1, 0);
	if (r < 0) {
		fprintf(stderr, "read hwstat error %d\n", r);
		return r;
	}
	if ((unsigned int) r < 1) {
		fprintf(stderr, "short read (%d)\n", r);
		return -1;
	}

	printf("hwstat reads %02x\n", *status);
	return 0;
}

static int set_hwstat(unsigned char data)
{
	int r;

	printf("set hwstat to %02x\n", data);
	r = libusb_control_transfer(devh, CTRL_OUT, USB_RQ, 0x07, 0, &data, 1, 0);
	if (r < 0) {
		fprintf(stderr, "set hwstat error %d\n", r);
		return r;
	}
	if ((unsigned int) r < 1) {
		fprintf(stderr, "short write (%d)", r);
		return -1;
	}

	return 0;
}

static int set_mode(unsigned char data)
{
	int r;
	printf("set mode %02x\n", data);

	r = libusb_control_transfer(devh, CTRL_OUT, USB_RQ, 0x4e, 0, &data, 1, 0);
	if (r < 0) {
		fprintf(stderr, "set mode error %d\n", r);
		return r;
	}
	if ((unsigned int) r < 1) {
		fprintf(stderr, "short write (%d)", r);
		return -1;
	}

	return 0;
}

static void LIBUSB_CALL cb_mode_changed(struct libusb_transfer *transfer)
{
	if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
		fprintf(stderr, "mode change transfer not completed!\n");
		request_exit(2);
	}

	printf("async cb_mode_changed length=%d actual_length=%d\n",
		transfer->length, transfer->actual_length);
	if (next_state() < 0)
		request_exit(2);
}

static int set_mode_async(unsigned char data)
{
	unsigned char *buf = (unsigned char*) malloc(LIBUSB_CONTROL_SETUP_SIZE + 1);
	struct libusb_transfer *transfer;

	if (!buf)
		return -ENOMEM;

	transfer = libusb_alloc_transfer(0);
	if (!transfer) {
		free(buf);
		return -ENOMEM;
	}

	printf("async set mode %02x\n", data);
	libusb_fill_control_setup(buf, CTRL_OUT, USB_RQ, 0x4e, 0, 1);
	buf[LIBUSB_CONTROL_SETUP_SIZE] = data;
	libusb_fill_control_transfer(transfer, devh, buf, cb_mode_changed, NULL,
		1000);

	transfer->flags = LIBUSB_TRANSFER_SHORT_NOT_OK
		| LIBUSB_TRANSFER_FREE_BUFFER | LIBUSB_TRANSFER_FREE_TRANSFER;
	return libusb_submit_transfer(transfer);
}

static int do_sync_intr(unsigned char *data)
{
	int r;
	int transferred;

	r = libusb_interrupt_transfer(devh, EP_INTR, data, INTR_LENGTH,
		&transferred, 1000);
	if (r < 0) {
		fprintf(stderr, "intr error %d\n", r);
		return r;
	}
	if (transferred < INTR_LENGTH) {
		fprintf(stderr, "short read (%d)\n", r);
		return -1;
	}

	printf("recv interrupt %04x\n", *((uint16_t *) data));
	return 0;
}

static int sync_intr(unsigned char type)
{
	int r;
	unsigned char data[INTR_LENGTH];

	while (1) {
		r = do_sync_intr(data);
		if (r < 0)
			return r;
		if (data[0] == type)
			return 0;
	}
}

static int save_to_file(unsigned char *data)
{
	FILE *fd;
	char filename[64];

	snprintf(filename, sizeof(filename), "finger%d.pgm", img_idx++);
	fd = fopen(filename, "w");
	if (!fd)
		return -1;

	fputs("P5 384 289 255 ", fd);
	(void) fwrite(data + 64, 1, 384*289, fd);
	fclose(fd);
	printf("saved image to %s\n", filename);
	return 0;
}

static int next_state(void)
{
	int r = 0;
	printf("old state: %d\n", state);
	switch (state) {
	case STATE_AWAIT_IRQ_FINGER_REMOVED:
		state = STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON;
		r = set_mode_async(MODE_AWAIT_FINGER_ON);
		break;
	case STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_ON:
		state = STATE_AWAIT_IRQ_FINGER_DETECTED;
		break;
	case STATE_AWAIT_IRQ_FINGER_DETECTED:
		state = STATE_AWAIT_MODE_CHANGE_CAPTURE;
		r = set_mode_async(MODE_CAPTURE);
		break;
	case STATE_AWAIT_MODE_CHANGE_CAPTURE:
		state = STATE_AWAIT_IMAGE;
		break;
	case STATE_AWAIT_IMAGE:
		state = STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF;
		r = set_mode_async(MODE_AWAIT_FINGER_OFF);
		break;
	case STATE_AWAIT_MODE_CHANGE_AWAIT_FINGER_OFF:
		state = STATE_AWAIT_IRQ_FINGER_REMOVED;
		break;
	default:
		printf("unrecognised state %d\n", state);
	}
	if (r < 0) {
		fprintf(stderr, "error detected changing state\n");
		return r;
	}

	printf("new state: %d\n", state);
	return 0;
}

static void LIBUSB_CALL cb_irq(struct libusb_transfer *transfer)
{
	unsigned char irqtype = transfer->buffer[0];

	if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
		fprintf(stderr, "irq transfer status %d?\n", transfer->status);
		irq_transfer = NULL;
		request_exit(2);
		return;
	}

	printf("IRQ callback %02x\n", irqtype);
	switch (state) {
	case STATE_AWAIT_IRQ_FINGER_DETECTED:
		if (irqtype == 0x01) {
			if (next_state() < 0) {
				request_exit(2);
				return;
			}
		} else {
			printf("finger-on-sensor detected in wrong state!\n");
		}
		break;
	case STATE_AWAIT_IRQ_FINGER_REMOVED:
		if (irqtype == 0x02) {
			if (next_state() < 0) {
				request_exit(2);
				return;
			}
		} else {
			printf("finger-on-sensor detected in wrong state!\n");
		}
		break;
	}
	if (libusb_submit_transfer(irq_transfer) < 0)
		request_exit(2);
}

static void LIBUSB_CALL cb_img(struct libusb_transfer *transfer)
{
	if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
		fprintf(stderr, "img transfer status %d?\n", transfer->status);
		img_transfer = NULL;
		request_exit(2);
		return;
	}

	printf("Image callback\n");
	save_to_file(imgbuf);
	if (next_state() < 0) {
		request_exit(2);
		return;
	}
	if (libusb_submit_transfer(img_transfer) < 0)
		request_exit(2);
}

static int init_capture(void)
{
	int r;

	r = libusb_submit_transfer(irq_transfer);
	if (r < 0)
		return r;

	r = libusb_submit_transfer(img_transfer);
	if (r < 0) {
		libusb_cancel_transfer(irq_transfer);
		while (irq_transfer)
			if (libusb_handle_events(NULL) < 0)
				break;
		return r;
	}

	/* start state machine */
	state = STATE_AWAIT_IRQ_FINGER_REMOVED;
	return next_state();
}

static int do_init(void)
{
	unsigned char status;
	int r;

	r = get_hwstat(&status);
	if (r < 0)
		return r;

	if (!(status & 0x80)) {
		r = set_hwstat(status | 0x80);
		if (r < 0)
			return r;
		r = get_hwstat(&status);
		if (r < 0)
			return r;
	}

	status &= ~0x80;
	r = set_hwstat(status);
	if (r < 0)
		return r;

	r = get_hwstat(&status);
	if (r < 0)
		return r;

	r = sync_intr(0x56);
	if (r < 0)
		return r;

	return 0;
}

static int alloc_transfers(void)
{
	img_transfer = libusb_alloc_transfer(0);
	if (!img_transfer)
		return -ENOMEM;

	irq_transfer = libusb_alloc_transfer(0);
	if (!irq_transfer)
		return -ENOMEM;

	libusb_fill_bulk_transfer(img_transfer, devh, EP_DATA, imgbuf,
		sizeof(imgbuf), cb_img, NULL, 0);
	libusb_fill_interrupt_transfer(irq_transfer, devh, EP_INTR, irqbuf,
		sizeof(irqbuf), cb_irq, NULL, 0);

	return 0;
}

static void sighandler(int signum)
{
	request_exit(1);
}

int main(void)
{
	struct sigaction sigact;
	int r = 1;

	r = sem_init(&exit_sem, 0, 0);
	if (r) {
		fprintf(stderr, "failed to initialise semaphore error %d", errno);
		exit(1);
	}

	r = libusb_init(NULL);
	if (r < 0) {
		fprintf(stderr, "failed to initialise libusb\n");
		sem_destroy(&exit_sem);
		exit(1);
	}

	r = find_dpfp_device();
	if (r < 0) {
		fprintf(stderr, "Could not find/open device\n");
		goto out;
	}

	r = libusb_claim_interface(devh, 0);
	if (r < 0) {
		fprintf(stderr, "usb_claim_interface error %d %s\n", r, strerror(-r));
		goto out;
	}
	printf("claimed interface\n");

	r = print_f0_data();
	if (r < 0)
		goto out_release;

	r = do_init();
	if (r < 0)
		goto out_deinit;

	/* async from here onwards */

	sigact.sa_handler = sighandler;
	sigemptyset(&sigact.sa_mask);
	sigact.sa_flags = 0;
	sigaction(SIGINT, &sigact, NULL);
	sigaction(SIGTERM, &sigact, NULL);
	sigaction(SIGQUIT, &sigact, NULL);

	r = pthread_create(&poll_thread, NULL, poll_thread_main, NULL);
	if (r)
		goto out_deinit;

	r = alloc_transfers();
	if (r < 0) {
		request_exit(1);
		pthread_join(poll_thread, NULL);
		goto out_deinit;
	}

	r = init_capture();
	if (r < 0) {
		request_exit(1);
		pthread_join(poll_thread, NULL);
		goto out_deinit;
	}

	while (!do_exit)
		sem_wait(&exit_sem);

	printf("shutting down...\n");
	pthread_join(poll_thread, NULL);

	r = libusb_cancel_transfer(irq_transfer);
	if (r < 0) {
		request_exit(1);
		goto out_deinit;
	}

	r = libusb_cancel_transfer(img_transfer);
	if (r < 0) {
		request_exit(1);
		goto out_deinit;
	}

	while (img_transfer || irq_transfer)
		if (libusb_handle_events(NULL) < 0)
			break;

	if (do_exit == 1)
		r = 0;
	else
		r = 1;

out_deinit:
	libusb_free_transfer(img_transfer);
	libusb_free_transfer(irq_transfer);
	set_mode(0);
	set_hwstat(0x80);
out_release:
	libusb_release_interface(devh, 0);
out:
	libusb_close(devh);
	libusb_exit(NULL);
	sem_destroy(&exit_sem);
	return r >= 0 ? r : -r;
}

/*
 * Copyright © 2001 Stephen Williams (steve@icarus.com)
 * Copyright © 2001-2002 David Brownell (dbrownell@users.sourceforge.net)
 * Copyright © 2008 Roger Williams (rawqux@users.sourceforge.net)
 * Copyright © 2012 Pete Batard (pete@akeo.ie)
 * Copyright © 2013 Federico Manzan (f.manzan@gmail.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
 *    General Public License as published by the Free Software
 *    Foundation; either version 2 of the License, or (at your option)
 *    any later version.
 *
 *    This program 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 General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>

#include "libusb.h"
#include "ezusb.h"

extern void logerror(const char *format, ...)
	__attribute__ ((format(printf, 1, 2)));

/*
 * This file contains functions for uploading firmware into Cypress
 * EZ-USB microcontrollers. These chips use control endpoint 0 and vendor
 * specific commands to support writing into the on-chip SRAM. They also
 * support writing into the CPUCS register, which is how we reset the
 * processor after loading firmware (including the reset vector).
 *
 * These Cypress devices are 8-bit 8051 based microcontrollers with
 * special support for USB I/O.  They come in several packages, and
 * some can be set up with external memory when device costs allow.
 * Note that the design was originally by AnchorChips, so you may find
 * references to that vendor (which was later merged into Cypress).
 * The Cypress FX parts are largely compatible with the Anchorhip ones.
 */

int verbose = 1;

/*
 * return true if [addr,addr+len] includes external RAM
 * for Anchorchips EZ-USB or Cypress EZ-USB FX
 */
static bool fx_is_external(uint32_t addr, size_t len)
{
	/* with 8KB RAM, 0x0000-0x1b3f can be written
	 * we can't tell if it's a 4KB device here
	 */
	if (addr <= 0x1b3f)
		return ((addr + len) > 0x1b40);

	/* there may be more RAM; unclear if we can write it.
	 * some bulk buffers may be unused, 0x1b3f-0x1f3f
	 * firmware can set ISODISAB for 2KB at 0x2000-0x27ff
	 */
	return true;
}

/*
 * return true if [addr,addr+len] includes external RAM
 * for Cypress EZ-USB FX2
 */
static bool fx2_is_external(uint32_t addr, size_t len)
{
	/* 1st 8KB for data/code, 0x0000-0x1fff */
	if (addr <= 0x1fff)
		return ((addr + len) > 0x2000);

	/* and 512 for data, 0xe000-0xe1ff */
	else if (addr >= 0xe000 && addr <= 0xe1ff)
		return ((addr + len) > 0xe200);

	/* otherwise, it's certainly external */
	else
		return true;
}

/*
 * return true if [addr,addr+len] includes external RAM
 * for Cypress EZ-USB FX2LP
 */
static bool fx2lp_is_external(uint32_t addr, size_t len)
{
	/* 1st 16KB for data/code, 0x0000-0x3fff */
	if (addr <= 0x3fff)
		return ((addr + len) > 0x4000);

	/* and 512 for data, 0xe000-0xe1ff */
	else if (addr >= 0xe000 && addr <= 0xe1ff)
		return ((addr + len) > 0xe200);

	/* otherwise, it's certainly external */
	else
		return true;
}


/*****************************************************************************/

/*
 * These are the requests (bRequest) that the bootstrap loader is expected
 * to recognize.  The codes are reserved by Cypress, and these values match
 * what EZ-USB hardware, or "Vend_Ax" firmware (2nd stage loader) uses.
 * Cypress' "a3load" is nice because it supports both FX and FX2, although
 * it doesn't have the EEPROM support (subset of "Vend_Ax").
 */
#define RW_INTERNAL     0xA0	/* hardware implements this one */
#define RW_MEMORY       0xA3

/*
 * Issues the specified vendor-specific write request.
 */
static int ezusb_write(libusb_device_handle *device, const char *label,
	uint8_t opcode, uint32_t addr, const unsigned char *data, size_t len)
{
	int status;

	if (verbose > 1)
		logerror("%s, addr 0x%08x len %4u (0x%04x)\n", label, addr, (unsigned)len, (unsigned)len);
	status = libusb_control_transfer(device,
		LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE,
		opcode, addr & 0xFFFF, addr >> 16,
		(unsigned char*)data, (uint16_t)len, 1000);
	if (status != (signed)len) {
		if (status < 0)
			logerror("%s: %s\n", label, libusb_error_name(status));
		else
			logerror("%s ==> %d\n", label, status);
	}
	return (status < 0) ? -EIO : 0;
}

/*
 * Issues the specified vendor-specific read request.
 */
static int ezusb_read(libusb_device_handle *device, const char *label,
	uint8_t opcode, uint32_t addr, const unsigned char *data, size_t len)
{
	int status;

	if (verbose > 1)
		logerror("%s, addr 0x%08x len %4u (0x%04x)\n", label, addr, (unsigned)len, (unsigned)len);
	status = libusb_control_transfer(device,
		LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE,
		opcode, addr & 0xFFFF, addr >> 16,
		(unsigned char*)data, (uint16_t)len, 1000);
	if (status != (signed)len) {
		if (status < 0)
			logerror("%s: %s\n", label, libusb_error_name(status));
		else
			logerror("%s ==> %d\n", label, status);
	}
	return (status < 0) ? -EIO : 0;
}

/*
 * Modifies the CPUCS register to stop or reset the CPU.
 * Returns false on error.
 */
static bool ezusb_cpucs(libusb_device_handle *device, uint32_t addr, bool doRun)
{
	int status;
	uint8_t data = doRun ? 0x00 : 0x01;

	if (verbose)
		logerror("%s\n", data ? "stop CPU" : "reset CPU");
	status = libusb_control_transfer(device,
		LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE,
		RW_INTERNAL, addr & 0xFFFF, addr >> 16,
		&data, 1, 1000);
	if ((status != 1) &&
		/* We may get an I/O error from libusb as the device disappears */
		((!doRun) || (status != LIBUSB_ERROR_IO)))
	{
		const char *mesg = "can't modify CPUCS";
		if (status < 0)
			logerror("%s: %s\n", mesg, libusb_error_name(status));
		else
			logerror("%s\n", mesg);
		return false;
	} else
		return true;
}

/*
 * Send an FX3 jumpt to address command
 * Returns false on error.
 */
static bool ezusb_fx3_jump(libusb_device_handle *device, uint32_t addr)
{
	int status;

	if (verbose)
		logerror("transfer execution to Program Entry at 0x%08x\n", addr);
	status = libusb_control_transfer(device,
		LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE,
		RW_INTERNAL, addr & 0xFFFF, addr >> 16,
		NULL, 0, 1000);
	/* We may get an I/O error from libusb as the device disappears */
	if ((status != 0) && (status != LIBUSB_ERROR_IO))
	{
		const char *mesg = "failed to send jump command";
		if (status < 0)
			logerror("%s: %s\n", mesg, libusb_error_name(status));
		else
			logerror("%s\n", mesg);
		return false;
	} else
		return true;
}

/*****************************************************************************/

/*
 * Parse an Intel HEX image file and invoke the poke() function on the
 * various segments to implement policies such as writing to RAM (with
 * a one or two stage loader setup, depending on the firmware) or to
 * EEPROM (two stages required).
 *
 * image       - the hex image file
 * context     - for use by poke()
 * is_external - if non-null, used to check which segments go into
 *               external memory (writable only by software loader)
 * poke        - called with each memory segment; errors indicated
 *               by returning negative values.
 *
 * Caller is responsible for halting CPU as needed, such as when
 * overwriting a second stage loader.
 */
static int parse_ihex(FILE *image, void *context,
	bool (*is_external)(uint32_t addr, size_t len),
	int (*poke) (void *context, uint32_t addr, bool external,
	const unsigned char *data, size_t len))
{
	unsigned char data[1023];
	uint32_t data_addr = 0;
	size_t data_len = 0;
	int rc;
	int first_line = 1;
	bool external = false;

	/* Read the input file as an IHEX file, and report the memory segments
	 * as we go.  Each line holds a max of 16 bytes, but uploading is
	 * faster (and EEPROM space smaller) if we merge those lines into larger
	 * chunks.  Most hex files keep memory segments together, which makes
	 * such merging all but free.  (But it may still be worth sorting the
	 * hex files to make up for undesirable behavior from tools.)
	 *
	 * Note that EEPROM segments max out at 1023 bytes; the upload protocol
	 * allows segments of up to 64 KBytes (more than a loader could handle).
	 */
	for (;;) {
		char buf[512], *cp;
		char tmp, type;
		size_t len;
		unsigned idx, off;

		cp = fgets(buf, sizeof(buf), image);
		if (cp == NULL) {
			logerror("EOF without EOF record!\n");
			break;
		}

		/* EXTENSION: "# comment-till-end-of-line", for copyrights etc */
		if (buf[0] == '#')
			continue;

		if (buf[0] != ':') {
			logerror("not an ihex record: %s", buf);
			return -2;
		}

		/* ignore any newline */
		cp = strchr(buf, '\n');
		if (cp)
			*cp = 0;

		if (verbose >= 3)
			logerror("** LINE: %s\n", buf);

		/* Read the length field (up to 16 bytes) */
		tmp = buf[3];
		buf[3] = 0;
		len = strtoul(buf+1, NULL, 16);
		buf[3] = tmp;

		/* Read the target offset (address up to 64KB) */
		tmp = buf[7];
		buf[7] = 0;
		off = (int)strtoul(buf+3, NULL, 16);
		buf[7] = tmp;

		/* Initialize data_addr */
		if (first_line) {
			data_addr = off;
			first_line = 0;
		}

		/* Read the record type */
		tmp = buf[9];
		buf[9] = 0;
		type = (char)strtoul(buf+7, NULL, 16);
		buf[9] = tmp;

		/* If this is an EOF record, then make it so. */
		if (type == 1) {
			if (verbose >= 2)
				logerror("EOF on hexfile\n");
			break;
		}

		if (type != 0) {
			logerror("unsupported record type: %u\n", type);
			return -3;
		}

		if ((len * 2) + 11 > strlen(buf)) {
			logerror("record too short?\n");
			return -4;
		}

		/* FIXME check for _physically_ contiguous not just virtually
		 * e.g. on FX2 0x1f00-0x2100 includes both on-chip and external
		 * memory so it's not really contiguous */

		/* flush the saved data if it's not contiguous,
		* or when we've buffered as much as we can.
		*/
		if (data_len != 0
			&& (off != (data_addr + data_len)
			/* || !merge */
			|| (data_len + len) > sizeof(data))) {
				if (is_external)
					external = is_external(data_addr, data_len);
				rc = poke(context, data_addr, external, data, data_len);
				if (rc < 0)
					return -1;
				data_addr = off;
				data_len = 0;
		}

		/* append to saved data, flush later */
		for (idx = 0, cp = buf+9 ;  idx < len ;  idx += 1, cp += 2) {
			tmp = cp[2];
			cp[2] = 0;
			data[data_len + idx] = (uint8_t)strtoul(cp, NULL, 16);
			cp[2] = tmp;
		}
		data_len += len;
	}


	/* flush any data remaining */
	if (data_len != 0) {
		if (is_external)
			external = is_external(data_addr, data_len);
		rc = poke(context, data_addr, external, data, data_len);
		if (rc < 0)
			return -1;
	}
	return 0;
}

/*
 * Parse a binary image file and write it as is to the target.
 * Applies to Cypress BIX images for RAM or Cypress IIC images
 * for EEPROM.
 *
 * image       - the BIX image file
 * context     - for use by poke()
 * is_external - if non-null, used to check which segments go into
 *               external memory (writable only by software loader)
 * poke        - called with each memory segment; errors indicated
 *               by returning negative values.
 *
 * Caller is responsible for halting CPU as needed, such as when
 * overwriting a second stage loader.
 */
static int parse_bin(FILE *image, void *context,
	bool (*is_external)(uint32_t addr, size_t len), int (*poke)(void *context,
	uint32_t addr, bool external, const unsigned char *data, size_t len))
{
	unsigned char data[4096];
	uint32_t data_addr = 0;
	size_t data_len = 0;
	int rc;
	bool external = false;

	for (;;) {
		data_len = fread(data, 1, 4096, image);
		if (data_len == 0)
			break;
		if (is_external)
			external = is_external(data_addr, data_len);
		rc = poke(context, data_addr, external, data, data_len);
		if (rc < 0)
			return -1;
		data_addr += (uint32_t)data_len;
	}
	return feof(image)?0:-1;
}

/*
 * Parse a Cypress IIC image file and invoke the poke() function on the
 * various segments for writing to RAM
 *
 * image       - the IIC image file
 * context     - for use by poke()
 * is_external - if non-null, used to check which segments go into
 *               external memory (writable only by software loader)
 * poke        - called with each memory segment; errors indicated
 *               by returning negative values.
 *
 * Caller is responsible for halting CPU as needed, such as when
 * overwriting a second stage loader.
 */
static int parse_iic(FILE *image, void *context,
	bool (*is_external)(uint32_t addr, size_t len),
	int (*poke)(void *context, uint32_t addr, bool external, const unsigned char *data, size_t len))
{
	unsigned char data[4096];
	uint32_t data_addr = 0;
	size_t data_len = 0, read_len;
	uint8_t block_header[4];
	int rc;
	bool external = false;
	long file_size, initial_pos;

	initial_pos = ftell(image);
	if (initial_pos < 0)
		return -1;

	if (fseek(image, 0L, SEEK_END) != 0)
		return -1;
	file_size = ftell(image);
	if (fseek(image, initial_pos, SEEK_SET) != 0)
		return -1;
	for (;;) {
		/* Ignore the trailing reset IIC data (5 bytes) */
		if (ftell(image) >= (file_size - 5))
			break;
		if (fread(&block_header, 1, sizeof(block_header), image) != 4) {
			logerror("unable to read IIC block header\n");
			return -1;
		}
		data_len = (block_header[0] << 8) + block_header[1];
		data_addr = (block_header[2] << 8) + block_header[3];
		if (data_len > sizeof(data)) {
			/* If this is ever reported as an error, switch to using malloc/realloc */
			logerror("IIC data block too small - please report this error to libusb.info\n");
			return -1;
		}
		read_len = fread(data, 1, data_len, image);
		if (read_len != data_len) {
			logerror("read error\n");
			return -1;
		}
		if (is_external)
			external = is_external(data_addr, data_len);
		rc = poke(context, data_addr, external, data, data_len);
		if (rc < 0)
			return -1;
	}
	return 0;
}

/* the parse call will be selected according to the image type */
static int (*parse[IMG_TYPE_MAX])(FILE *image, void *context, bool (*is_external)(uint32_t addr, size_t len),
           int (*poke)(void *context, uint32_t addr, bool external, const unsigned char *data, size_t len))
           = { parse_ihex, parse_iic, parse_bin };

/*****************************************************************************/

/*
 * For writing to RAM using a first (hardware) or second (software)
 * stage loader and 0xA0 or 0xA3 vendor requests
 */
typedef enum {
	_undef = 0,
	internal_only,		/* hardware first-stage loader */
	skip_internal,		/* first phase, second-stage loader */
	skip_external		/* second phase, second-stage loader */
} ram_mode;

struct ram_poke_context {
	libusb_device_handle *device;
	ram_mode mode;
	size_t total, count;
};

#define RETRY_LIMIT 5

static int ram_poke(void *context, uint32_t addr, bool external,
	const unsigned char *data, size_t len)
{
	struct ram_poke_context *ctx = (struct ram_poke_context*)context;
	int rc;
	unsigned retry = 0;

	switch (ctx->mode) {
	case internal_only:		/* CPU should be stopped */
		if (external) {
			logerror("can't write %u bytes external memory at 0x%08x\n",
				(unsigned)len, addr);
			return -EINVAL;
		}
		break;
	case skip_internal:		/* CPU must be running */
		if (!external) {
			if (verbose >= 2) {
				logerror("SKIP on-chip RAM, %u bytes at 0x%08x\n",
					(unsigned)len, addr);
			}
			return 0;
		}
		break;
	case skip_external:		/* CPU should be stopped */
		if (external) {
			if (verbose >= 2) {
				logerror("SKIP external RAM, %u bytes at 0x%08x\n",
					(unsigned)len, addr);
			}
			return 0;
		}
		break;
	case _undef:
	default:
		logerror("bug\n");
		return -EDOM;
	}

	ctx->total += len;
	ctx->count++;

	/* Retry this till we get a real error. Control messages are not
	 * NAKed (just dropped) so time out means is a real problem.
	 */
	while ((rc = ezusb_write(ctx->device,
		external ? "write external" : "write on-chip",
		external ? RW_MEMORY : RW_INTERNAL,
		addr, data, len)) < 0
		&& retry < RETRY_LIMIT) {
		if (rc != LIBUSB_ERROR_TIMEOUT)
			break;
		retry += 1;
	}
	return rc;
}

/*
 * Load a Cypress Image file into target RAM.
 * See http://www.cypress.com/?docID=41351 (AN76405 PDF) for more info.
 */
static int fx3_load_ram(libusb_device_handle *device, const char *path)
{
	uint32_t dCheckSum, dExpectedCheckSum, dAddress, i, dLen, dLength;
	uint32_t* dImageBuf;
	unsigned char *bBuf, hBuf[4], blBuf[4], rBuf[4096];
	FILE *image;
	int ret = 0;

	image = fopen(path, "rb");
	if (image == NULL) {
		logerror("unable to open '%s' for input\n", path);
		return -2;
	} else if (verbose)
		logerror("open firmware image %s for RAM upload\n", path);

	// Read header
	if (fread(hBuf, sizeof(char), sizeof(hBuf), image) != sizeof(hBuf)) {
		logerror("could not read image header");
		ret = -3;
		goto exit;
	}

	// check "CY" signature byte and format
	if ((hBuf[0] != 'C') || (hBuf[1] != 'Y')) {
		logerror("image doesn't have a CYpress signature\n");
		ret = -3;
		goto exit;
	}

	// Check bImageType
	switch(hBuf[3]) {
	case 0xB0:
		if (verbose)
			logerror("normal FW binary %s image with checksum\n", (hBuf[2]&0x01)?"data":"executable");
		break;
	case 0xB1:
		logerror("security binary image is not currently supported\n");
		ret = -3;
		goto exit;
	case 0xB2:
		logerror("VID:PID image is not currently supported\n");
		ret = -3;
		goto exit;
	default:
		logerror("invalid image type 0x%02X\n", hBuf[3]);
		ret = -3;
		goto exit;
	}

	// Read the bootloader version
	if (verbose) {
		if ((ezusb_read(device, "read bootloader version", RW_INTERNAL, 0xFFFF0020, blBuf, 4) < 0)) {
			logerror("Could not read bootloader version\n");
			ret = -8;
			goto exit;
		}
		logerror("FX3 bootloader version: 0x%02X%02X%02X%02X\n", blBuf[3], blBuf[2], blBuf[1], blBuf[0]);
	}

	dCheckSum = 0;
	if (verbose)
		logerror("writing image...\n");
	while (1) {
		if ((fread(&dLength, sizeof(uint32_t), 1, image) != 1) ||  // read dLength
			(fread(&dAddress, sizeof(uint32_t), 1, image) != 1)) { // read dAddress
			logerror("could not read image");
			ret = -3;
			goto exit;
		}
		if (dLength == 0)
			break; // done

		// coverity[tainted_data]
		dImageBuf = (uint32_t*)calloc(dLength, sizeof(uint32_t));
		if (dImageBuf == NULL) {
			logerror("could not allocate buffer for image chunk\n");
			ret = -4;
			goto exit;
		}

		// read sections
		if (fread(dImageBuf, sizeof(uint32_t), dLength, image) != dLength) {
			logerror("could not read image");
			free(dImageBuf);
			ret = -3;
			goto exit;
		}
		for (i = 0; i < dLength; i++)
			dCheckSum += dImageBuf[i];
		dLength <<= 2; // convert to Byte length
		bBuf = (unsigned char*) dImageBuf;

		while (dLength > 0) {
			dLen = 4096; // 4K max
			if (dLen > dLength)
				dLen = dLength;
			if ((ezusb_write(device, "write firmware", RW_INTERNAL, dAddress, bBuf, dLen) < 0) ||
				(ezusb_read(device, "read firmware", RW_INTERNAL, dAddress, rBuf, dLen) < 0)) {
				logerror("R/W error\n");
				free(dImageBuf);
				ret = -5;
				goto exit;
			}
			// Verify data: rBuf with bBuf
			for (i = 0; i < dLen; i++) {
				if (rBuf[i] != bBuf[i]) {
					logerror("verify error");
					free(dImageBuf);
					ret = -6;
					goto exit;
				}
			}

			dLength -= dLen;
			bBuf += dLen;
			dAddress += dLen;
		}
		free(dImageBuf);
	}

	// read pre-computed checksum data
	if ((fread(&dExpectedCheckSum, sizeof(uint32_t), 1, image) != 1) ||
		(dCheckSum != dExpectedCheckSum)) {
		logerror("checksum error\n");
		ret = -7;
		goto exit;
	}

	// transfer execution to Program Entry
	if (!ezusb_fx3_jump(device, dAddress)) {
		ret = -6;
	}

exit:
	fclose(image);
	return ret;
}

/*
 * Load a firmware file into target RAM. device is the open libusb
 * device, and the path is the name of the source file. Open the file,
 * parse the bytes, and write them in one or two phases.
 *
 * If stage == 0, this uses the first stage loader, built into EZ-USB
 * hardware but limited to writing on-chip memory or CPUCS.  Everything
 * is written during one stage, unless there's an error such as the image
 * holding data that needs to be written to external memory.
 *
 * Otherwise, things are written in two stages.  First the external
 * memory is written, expecting a second stage loader to have already
 * been loaded.  Then file is re-parsed and on-chip memory is written.
 */
int ezusb_load_ram(libusb_device_handle *device, const char *path, int fx_type, int img_type, int stage)
{
	FILE *image;
	uint32_t cpucs_addr;
	bool (*is_external)(uint32_t off, size_t len);
	struct ram_poke_context ctx;
	int status;
	uint8_t iic_header[8] = { 0 };
	int ret = 0;

	if (fx_type == FX_TYPE_FX3)
		return fx3_load_ram(device, path);

	image = fopen(path, "rb");
	if (image == NULL) {
		logerror("%s: unable to open for input.\n", path);
		return -2;
	} else if (verbose > 1)
		logerror("open firmware image %s for RAM upload\n", path);

	if (img_type == IMG_TYPE_IIC) {
		if ( (fread(iic_header, 1, sizeof(iic_header), image) != sizeof(iic_header))
		  || (((fx_type == FX_TYPE_FX2LP) || (fx_type == FX_TYPE_FX2)) && (iic_header[0] != 0xC2))
		  || ((fx_type == FX_TYPE_AN21) && (iic_header[0] != 0xB2))
		  || ((fx_type == FX_TYPE_FX1) && (iic_header[0] != 0xB6)) ) {
			logerror("IIC image does not contain executable code - cannot load to RAM.\n");
			ret = -1;
			goto exit;
		}
	}

	/* EZ-USB original/FX and FX2 devices differ, apart from the 8051 core */
	switch(fx_type) {
	case FX_TYPE_FX2LP:
		cpucs_addr = 0xe600;
		is_external = fx2lp_is_external;
		break;
	case FX_TYPE_FX2:
		cpucs_addr = 0xe600;
		is_external = fx2_is_external;
		break;
	default:
		cpucs_addr = 0x7f92;
		is_external = fx_is_external;
		break;
	}

	/* use only first stage loader? */
	if (stage == 0) {
		ctx.mode = internal_only;

		/* if required, halt the CPU while we overwrite its code/data */
		if (cpucs_addr && !ezusb_cpucs(device, cpucs_addr, false))
		{
			ret = -1;
			goto exit;
		}

		/* 2nd stage, first part? loader was already uploaded */
	} else {
		ctx.mode = skip_internal;

		/* let CPU run; overwrite the 2nd stage loader later */
		if (verbose)
			logerror("2nd stage: write external memory\n");
	}

	/* scan the image, first (maybe only) time */
	ctx.device = device;
	ctx.total = ctx.count = 0;
	status = parse[img_type](image, &ctx, is_external, ram_poke);
	if (status < 0) {
		logerror("unable to upload %s\n", path);
		ret = status;
		goto exit;
	}

	/* second part of 2nd stage: rescan */
	// TODO: what should we do for non HEX images there?
	if (stage) {
		ctx.mode = skip_external;

		/* if needed, halt the CPU while we overwrite the 1st stage loader */
		if (cpucs_addr && !ezusb_cpucs(device, cpucs_addr, false))
		{
			ret = -1;
			goto exit;
		}

		/* at least write the interrupt vectors (at 0x0000) for reset! */
		rewind(image);
		if (verbose)
			logerror("2nd stage: write on-chip memory\n");
		status = parse_ihex(image, &ctx, is_external, ram_poke);
		if (status < 0) {
			logerror("unable to completely upload %s\n", path);
			ret = status;
			goto exit;
		}
	}

	if (verbose && (ctx.count != 0)) {
		logerror("... WROTE: %d bytes, %d segments, avg %d\n",
			(int)ctx.total, (int)ctx.count, (int)(ctx.total/ctx.count));
	}

	/* if required, reset the CPU so it runs what we just uploaded */
	if (cpucs_addr && !ezusb_cpucs(device, cpucs_addr, true))
		ret = -1;

exit:
	fclose(image);
	return ret;
}