initial commit

Signed-off-by: Steve Markgraf <steve@steve-m.de>
This commit is contained in:
Steve Markgraf 2018-04-17 00:23:07 +02:00
commit 65d43393ed
21 changed files with 5800 additions and 0 deletions

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Makefile
Makefile.in
.deps
.libs
*.o
*.lo
*.la
*.pc
aclocal.m4
acinclude.m4
aminclude.am
m4/*.m4
autom4te.cache
config.h*
config.sub
config.log
config.status
config.guess
configure
depcomp
missing
ltmain.sh
install-sh
stamp-h1
libtool
Doxyfile
.tarball-version
.version
.*.swp
doc/
CMakeCache.txt
*/CMakeFiles
CMakeFiles
*.cmake

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AUTHORS Normal file
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Steve Markgraf <steve@steve-m.de>

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CMakeLists.txt Normal file
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# Copyright 2018 Osmocom Project
#
# This file is part of osmo-fl2k
#
# This program is free software: you can redistribute it and/or modify
# it 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, see <http://www.gnu.org/licenses/>.
########################################################################
# Project setup
########################################################################
cmake_minimum_required(VERSION 2.6)
project(libosmo-fl2k C)
#select the release build type by default to get optimization flags
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE "Release")
message(STATUS "Build type not specified: defaulting to release.")
endif(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE ${CMAKE_BUILD_TYPE} CACHE STRING "")
list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/Modules)
if(NOT LIB_INSTALL_DIR)
set(LIB_INSTALL_DIR lib)
endif()
# Set the version information here
set(VERSION_INFO_MAJOR_VERSION 0) # increment major on api compatibility changes
set(VERSION_INFO_MINOR_VERSION 1) # increment minor on feature-level changes
set(VERSION_INFO_PATCH_VERSION git) # increment patch for bug fixes and docs
include(Version) # setup version info
########################################################################
# Compiler specific setup
########################################################################
if(CMAKE_COMPILER_IS_GNUCC AND NOT WIN32)
ADD_DEFINITIONS(-Wall)
ADD_DEFINITIONS(-Wextra)
ADD_DEFINITIONS(-Wno-unused-parameter)
ADD_DEFINITIONS(-Wno-unused)
ADD_DEFINITIONS(-Wsign-compare)
ADD_DEFINITIONS(-Wdeclaration-after-statement)
#http://gcc.gnu.org/wiki/Visibility
add_definitions(-fvisibility=hidden)
endif()
########################################################################
# Find build dependencies
########################################################################
find_package(PkgConfig)
find_package(LibUSB)
set(THREADS_USE_PTHREADS_WIN32 true)
find_package(Threads)
if(NOT LIBUSB_FOUND)
message(FATAL_ERROR "LibUSB 1.0 required to compile libosmo-fl2k")
endif()
if(NOT THREADS_FOUND)
message(FATAL_ERROR "pthreads(-win32) required to compile libosmo-fl2k")
endif()
########################################################################
# Setup the include and linker paths
########################################################################
include_directories(
${CMAKE_SOURCE_DIR}/include
${LIBUSB_INCLUDE_DIR}
${THREADS_PTHREADS_INCLUDE_DIR}
)
#link_directories(
# ...
#)
# Set component parameters
#set(INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/include CACHE INTERNAL "" FORCE)
########################################################################
# Create uninstall target
########################################################################
configure_file(
${CMAKE_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake
@ONLY)
add_custom_target(uninstall
${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake
)
########################################################################
# Install udev rules
########################################################################
option(INSTALL_UDEV_RULES "Install udev rules for libosmo-fl2k" OFF)
if (INSTALL_UDEV_RULES)
install (
FILES osmo-fl2k.rules
DESTINATION "/etc/udev/rules.d"
COMPONENT "udev"
)
else (INSTALL_UDEV_RULES)
message (STATUS "Udev rules not being installed, install them with -DINSTALL_UDEV_RULES=ON")
endif (INSTALL_UDEV_RULES)
########################################################################
# Add subdirectories
########################################################################
add_subdirectory(include)
add_subdirectory(src)
########################################################################
# Create Pkg Config File
########################################################################
FOREACH(inc ${LIBUSB_INCLUDE_DIR})
LIST(APPEND FL2K_PC_CFLAGS "-I${inc}")
ENDFOREACH(inc)
FOREACH(lib ${LIBUSB_LIBRARY_DIRS})
LIST(APPEND FL2K_PC_LIBS "-L${lib}")
ENDFOREACH(lib)
# use space-separation format for the pc file
STRING(REPLACE ";" " " FL2K_PC_CFLAGS "${FL2K_PC_CFLAGS}")
STRING(REPLACE ";" " " FL2K_PC_LIBS "${FL2K_PC_LIBS}")
# unset these vars to avoid hard-coded paths to cross environment
IF(CMAKE_CROSSCOMPILING)
UNSET(FL2K_PC_CFLAGS)
UNSET(FL2K_PC_LIBS)
ENDIF(CMAKE_CROSSCOMPILING)
set(prefix ${CMAKE_INSTALL_PREFIX})
set(exec_prefix \${prefix})
set(libdir \${exec_prefix}/${LIB_INSTALL_DIR})
set(includedir \${prefix}/include)
CONFIGURE_FILE(
${CMAKE_CURRENT_SOURCE_DIR}/libosmo-fl2k.pc.in
${CMAKE_CURRENT_BINARY_DIR}/libosmo-fl2k.pc
@ONLY)
INSTALL(
FILES ${CMAKE_CURRENT_BINARY_DIR}/libosmo-fl2k.pc
DESTINATION ${LIB_INSTALL_DIR}/pkgconfig
)
########################################################################
# Print Summary
########################################################################
MESSAGE(STATUS "Building for version: ${VERSION} / ${LIBVER}")
MESSAGE(STATUS "Using install prefix: ${CMAKE_INSTALL_PREFIX}")

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
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software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
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your programs, too.
When we speak of free software, we are referring to freedom, not
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TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
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How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
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convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it 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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

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# osmo-fl2k
#### turns FL2000-based USB 3.0 to VGA adapters into low cost DACs
For more information see https://osmocom.org/projects/osmo-fl2k/wiki

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# http://www.vtk.org/Wiki/CMake_FAQ#Can_I_do_.22make_uninstall.22_with_CMake.3F
IF(NOT EXISTS "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
MESSAGE(FATAL_ERROR "Cannot find install manifest: \"@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt\"")
ENDIF(NOT EXISTS "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
FILE(READ "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt" files)
STRING(REGEX REPLACE "\n" ";" files "${files}")
FOREACH(file ${files})
MESSAGE(STATUS "Uninstalling \"$ENV{DESTDIR}${file}\"")
IF(EXISTS "$ENV{DESTDIR}${file}")
EXEC_PROGRAM(
"@CMAKE_COMMAND@" ARGS "-E remove \"$ENV{DESTDIR}${file}\""
OUTPUT_VARIABLE rm_out
RETURN_VALUE rm_retval
)
IF(NOT "${rm_retval}" STREQUAL 0)
MESSAGE(FATAL_ERROR "Problem when removing \"$ENV{DESTDIR}${file}\"")
ENDIF(NOT "${rm_retval}" STREQUAL 0)
ELSEIF(IS_SYMLINK "$ENV{DESTDIR}${file}")
EXEC_PROGRAM(
"@CMAKE_COMMAND@" ARGS "-E remove \"$ENV{DESTDIR}${file}\""
OUTPUT_VARIABLE rm_out
RETURN_VALUE rm_retval
)
IF(NOT "${rm_retval}" STREQUAL 0)
MESSAGE(FATAL_ERROR "Problem when removing \"$ENV{DESTDIR}${file}\"")
ENDIF(NOT "${rm_retval}" STREQUAL 0)
ELSE(EXISTS "$ENV{DESTDIR}${file}")
MESSAGE(STATUS "File \"$ENV{DESTDIR}${file}\" does not exist.")
ENDIF(EXISTS "$ENV{DESTDIR}${file}")
ENDFOREACH(file)

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#!/bin/sh
# Print a version string.
scriptversion=2010-01-28.01
# Copyright (C) 2007-2010 Free Software Foundation, Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 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, see <http://www.gnu.org/licenses/>.
# This script is derived from GIT-VERSION-GEN from GIT: http://git.or.cz/.
# It may be run two ways:
# - from a git repository in which the "git describe" command below
# produces useful output (thus requiring at least one signed tag)
# - from a non-git-repo directory containing a .tarball-version file, which
# presumes this script is invoked like "./git-version-gen .tarball-version".
# In order to use intra-version strings in your project, you will need two
# separate generated version string files:
#
# .tarball-version - present only in a distribution tarball, and not in
# a checked-out repository. Created with contents that were learned at
# the last time autoconf was run, and used by git-version-gen. Must not
# be present in either $(srcdir) or $(builddir) for git-version-gen to
# give accurate answers during normal development with a checked out tree,
# but must be present in a tarball when there is no version control system.
# Therefore, it cannot be used in any dependencies. GNUmakefile has
# hooks to force a reconfigure at distribution time to get the value
# correct, without penalizing normal development with extra reconfigures.
#
# .version - present in a checked-out repository and in a distribution
# tarball. Usable in dependencies, particularly for files that don't
# want to depend on config.h but do want to track version changes.
# Delete this file prior to any autoconf run where you want to rebuild
# files to pick up a version string change; and leave it stale to
# minimize rebuild time after unrelated changes to configure sources.
#
# It is probably wise to add these two files to .gitignore, so that you
# don't accidentally commit either generated file.
#
# Use the following line in your configure.ac, so that $(VERSION) will
# automatically be up-to-date each time configure is run (and note that
# since configure.ac no longer includes a version string, Makefile rules
# should not depend on configure.ac for version updates).
#
# AC_INIT([GNU project],
# m4_esyscmd([build-aux/git-version-gen .tarball-version]),
# [bug-project@example])
#
# Then use the following lines in your Makefile.am, so that .version
# will be present for dependencies, and so that .tarball-version will
# exist in distribution tarballs.
#
# BUILT_SOURCES = $(top_srcdir)/.version
# $(top_srcdir)/.version:
# echo $(VERSION) > $@-t && mv $@-t $@
# dist-hook:
# echo $(VERSION) > $(distdir)/.tarball-version
case $# in
1) ;;
*) echo 1>&2 "Usage: $0 \$srcdir/.tarball-version"; exit 1;;
esac
tarball_version_file=$1
nl='
'
# First see if there is a tarball-only version file.
# then try "git describe", then default.
if test -f $tarball_version_file
then
v=`cat $tarball_version_file` || exit 1
case $v in
*$nl*) v= ;; # reject multi-line output
[0-9]*) ;;
*) v= ;;
esac
test -z "$v" \
&& echo "$0: WARNING: $tarball_version_file seems to be damaged" 1>&2
fi
if test -n "$v"
then
: # use $v
elif
v=`git describe --abbrev=4 --match='v*' HEAD 2>/dev/null \
|| git describe --abbrev=4 HEAD 2>/dev/null` \
&& case $v in
[0-9]*) ;;
v[0-9]*) ;;
*) (exit 1) ;;
esac
then
# Is this a new git that lists number of commits since the last
# tag or the previous older version that did not?
# Newer: v6.10-77-g0f8faeb
# Older: v6.10-g0f8faeb
case $v in
*-*-*) : git describe is okay three part flavor ;;
*-*)
: git describe is older two part flavor
# Recreate the number of commits and rewrite such that the
# result is the same as if we were using the newer version
# of git describe.
vtag=`echo "$v" | sed 's/-.*//'`
numcommits=`git rev-list "$vtag"..HEAD | wc -l`
v=`echo "$v" | sed "s/\(.*\)-\(.*\)/\1-$numcommits-\2/"`;
;;
esac
# Change the first '-' to a '.', so version-comparing tools work properly.
# Remove the "g" in git describe's output string, to save a byte.
v=`echo "$v" | sed 's/-/./;s/\(.*\)-g/\1-/'`;
else
v=UNKNOWN
fi
v=`echo "$v" |sed 's/^v//'`
# Don't declare a version "dirty" merely because a time stamp has changed.
git status > /dev/null 2>&1
dirty=`sh -c 'git diff-index --name-only HEAD' 2>/dev/null` || dirty=
case "$dirty" in
'') ;;
*) # Append the suffix only if there isn't one already.
case $v in
*-dirty) ;;
*) v="$v-dirty" ;;
esac ;;
esac
# Omit the trailing newline, so that m4_esyscmd can use the result directly.
echo "$v" | tr -d '\012'
# Local variables:
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-end: "$"
# End:

25
include/CMakeLists.txt Normal file
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# Copyright 2018 Osmocom Project
#
# This file is part of osmo-fl2k
#
# This program is free software: you can redistribute it and/or modify
# it 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, see <http://www.gnu.org/licenses/>.
########################################################################
# Install public header files
########################################################################
install(FILES
osmo-fl2k.h
osmo-fl2k_export.h
DESTINATION include
)

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include/osmo-fl2k.h Normal file
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/*
* osmo-fl2k, turns FL2000-based USB 3.0 to VGA adapters into
* low cost DACs
*
* Copyright (C) 2016-2018 by Steve Markgraf <steve@steve-m.de>
*
* SPDX-License-Identifier: GPL-2.0+
*
* This program is free software: you can redistribute it and/or modify
* it 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __FL2K_H
#define __FL2K_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
#include <osmo-fl2k_export.h>
enum fl2k_error {
FL2K_SUCCESS = 0,
FL2K_TRUE = 1,
FL2K_ERROR_INVALID_PARAM = -1,
FL2K_ERROR_NO_DEVICE = -2,
FL2K_ERROR_NOT_FOUND = -5,
FL2K_ERROR_BUSY = -6,
FL2K_ERROR_NO_MEM = -11,
};
typedef struct fl2k_data_info {
/* information provided by library */
void *ctx;
uint32_t underflow_cnt; /* underflows since last callback */
uint32_t len; /* buffer length */
int using_zerocopy; /* using zerocopy kernel buffers */
int device_error; /* device error happened, terminate application */
/* filled in by application */
int sampletype_signed; /* are samples signed or unsigned? */
char *r_buf; /* pointer to red buffer */
char *g_buf; /* pointer to green buffer */
char *b_buf; /* pointer to blue buffer */
} fl2k_data_info_t;
typedef struct fl2k_dev fl2k_dev_t;
/** The transfer length was chosen by the following criteria:
* - Must be a supported resolution of the FL2000DX
* - Must be a multiple of 61440 bytes (URB payload length),
* which is important for using the DAC without HSYNC/VSYNC blanking,
* otherwise a couple of samples are missing between every buffer
* - Should be smaller than 4MB in order to be allocatable by kmalloc()
* for zerocopy transfers
**/
#define FL2K_BUF_LEN (1280 * 1024)
#define FL2K_XFER_LEN (FL2K_BUF_LEN * 3)
FL2K_API uint32_t fl2k_get_device_count(void);
FL2K_API const char* fl2k_get_device_name(uint32_t index);
FL2K_API int fl2k_open(fl2k_dev_t **dev, uint32_t index);
FL2K_API int fl2k_close(fl2k_dev_t *dev);
/* configuration functions */
/*!
* Set the sample rate (pixel clock) for the device
*
* \param dev the device handle given by fl2k_open()
* \param samp_rate the sample rate to be set, maximum value depends
* on host and USB controller
* \return 0 on success, -EINVAL on invalid rate
*/
FL2K_API int fl2k_set_sample_rate(fl2k_dev_t *dev, uint32_t target_freq);
/*!
* Get actual sample rate the device is configured to.
*
* \param dev the device handle given by fl2k_open()
* \return 0 on error, sample rate in Hz otherwise
*/
FL2K_API uint32_t fl2k_get_sample_rate(fl2k_dev_t *dev);
/* streaming functions */
typedef void(*fl2k_tx_cb_t)(fl2k_data_info_t *data_info);
/*!
* Starts the tx thread. This function will block until
* it is being canceled using fl2k_stop_tx()
*
* \param dev the device handle given by fl2k_open()
* \param ctx user specific context to pass via the callback function
* \param buf_num optional buffer count, buf_num * FL2K_BUF_LEN = overall buffer size
* set to 0 for default buffer count (4)
* \return 0 on success
*/
FL2K_API int fl2k_start_tx(fl2k_dev_t *dev, fl2k_tx_cb_t cb,
void *ctx, uint32_t buf_num);
/*!
* Cancel all pending asynchronous operations on the device.
*
* \param dev the device handle given by fl2k_open()
* \return 0 on success
*/
FL2K_API int fl2k_stop_tx(fl2k_dev_t *dev);
#ifdef __cplusplus
}
#endif
#endif /* __FL2K_H */

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@ -0,0 +1,51 @@
/*
* osmo-fl2k, turns FL2000-based USB 3.0 to VGA adapters into
* low cost DACs
*
* Copyright (C) 2016-2018 by Steve Markgraf <steve@steve-m.de>
*
* SPDX-License-Identifier: GPL-2.0+
*
* This program is free software: you can redistribute it and/or modify
* it 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef FL2K_EXPORT_H
#define FL2K_EXPORT_H
#if defined __GNUC__
# if __GNUC__ >= 4
# define __FL2K_EXPORT __attribute__((visibility("default")))
# define __FL2K_IMPORT __attribute__((visibility("default")))
# else
# define __FL2K_EXPORT
# define __FL2K_IMPORT
# endif
#elif _MSC_VER
# define __FL2K_EXPORT __declspec(dllexport)
# define __FL2K_IMPORT __declspec(dllimport)
#else
# define __FL2K_EXPORT
# define __FL2K_IMPORT
#endif
#ifndef libosmo-fl2k_STATIC
# ifdef fl2k_EXPORTS
# define FL2K_API __FL2K_EXPORT
# else
# define FL2K_API __FL2K_IMPORT
# endif
#else
#define FL2K_API
#endif
#endif /* FL2K_EXPORT_H */

11
libosmo-fl2k.pc.in Normal file
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prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@
Name: Osmocom osmo-fl2k Library
Description: C Utility Library
Version: @VERSION@
Cflags: -I${includedir}/ @FL2K_PC_CFLAGS@
Libs: -L${libdir} -losmo-fl2k -lusb-1.0
Libs.private: @FL2K_PC_LIBS@

19
osmo-fl2k.rules Normal file
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#
# Copyright 2016-2018 Osmocom osmo-fl2k project
#
# This program is free software: you can redistribute it and/or modify
# it 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, see <http://www.gnu.org/licenses/>.
#
# FL2000 USB 3.0 VGA Adapter default PID/VID
SUBSYSTEMS=="usb", ATTRS{idVendor}=="1d5c", ATTRS{idProduct}=="2000", MODE:="0666"

116
src/CMakeLists.txt Normal file
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# Copyright 2018 Osmocom Project
#
# This file is part of osmo-fl2k
#
# This program is free software: you can redistribute it and/or modify
# it 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, see <http://www.gnu.org/licenses/>.
MACRO(LIBFL2K_APPEND_SRCS)
LIST(APPEND libosmo-fl2k_srcs ${ARGV})
ENDMACRO(LIBFL2K_APPEND_SRCS)
LIBFL2K_APPEND_SRCS(
libosmo-fl2k.c
)
########################################################################
# Set up Windows DLL resource files
########################################################################
IF(MSVC)
include(${CMAKE_SOURCE_DIR}/cmake/Modules/Version.cmake)
configure_file(
${CMAKE_CURRENT_SOURCE_DIR}/libosmo-fl2k.rc.in
${CMAKE_CURRENT_BINARY_DIR}/libosmo-fl2k.rc
@ONLY)
LIBFL2K_APPEND_SRCS(${CMAKE_CURRENT_BINARY_DIR}/libosmo-fl2k.rc)
ENDIF(MSVC)
########################################################################
# Setup shared library variant
########################################################################
add_library(libosmo-fl2k_shared SHARED ${libosmo-fl2k_srcs})
target_link_libraries(libosmo-fl2k_shared ${LIBUSB_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
set_target_properties(libosmo-fl2k_shared PROPERTIES DEFINE_SYMBOL "libosmofl2k_EXPORTS")
set_target_properties(libosmo-fl2k_shared PROPERTIES OUTPUT_NAME osmo-fl2k)
set_target_properties(libosmo-fl2k_shared PROPERTIES SOVERSION ${MAJOR_VERSION})
set_target_properties(libosmo-fl2k_shared PROPERTIES VERSION ${LIBVER})
########################################################################
# Setup static library variant
########################################################################
add_library(libosmo-fl2k_static STATIC ${libosmo-fl2k_srcs})
target_link_libraries(libosmo-fl2k_static ${LIBUSB_LIBRARIES})
set_property(TARGET libosmo-fl2k_static APPEND PROPERTY COMPILE_DEFINITIONS "libosmofl2k_STATIC" )
if(NOT WIN32)
# Force same library filename for static and shared variants of the library
set_target_properties(libosmo-fl2k_static PROPERTIES OUTPUT_NAME osmo-fl2k)
endif()
########################################################################
# Setup libraries used in executables
########################################################################
if(WIN32)
add_library(libgetopt_static STATIC
getopt/getopt.c
)
target_link_libraries(
libosmo-fl2k_shared
)
endif()
########################################################################
# Build utility
########################################################################
add_executable(fl2k_file fl2k_file.c)
add_executable(fl2k_tcp fl2k_tcp.c)
add_executable(fl2k_test fl2k_test.c)
set(INSTALL_TARGETS libosmo-fl2k_shared libosmo-fl2k_static fl2k_file fl2k_tcp fl2k_test)
target_link_libraries(fl2k_file libosmo-fl2k_shared
${LIBUSB_LIBRARIES}
${CMAKE_THREAD_LIBS_INIT}
)
target_link_libraries(fl2k_tcp libosmo-fl2k_shared
${LIBUSB_LIBRARIES}
${CMAKE_THREAD_LIBS_INIT}
)
target_link_libraries(fl2k_test libosmo-fl2k_shared
${LIBUSB_LIBRARIES}
${CMAKE_THREAD_LIBS_INIT}
)
if(UNIX)
target_link_libraries(fl2k_test m)
endif()
if(WIN32)
target_link_libraries(fl2k_file libgetopt_static)
target_link_libraries(fl2k_tcp ws2_32 libgetopt_static)
target_link_libraries(fl2k_test libgetopt_static)
set_property(TARGET fl2k_file APPEND PROPERTY COMPILE_DEFINITIONS "libosmo-fl2k_STATIC" )
set_property(TARGET fl2k_tcp APPEND PROPERTY COMPILE_DEFINITIONS "libosmo-fl2k_STATIC" )
set_property(TARGET fl2k_test APPEND PROPERTY COMPILE_DEFINITIONS "libosmo-fl2k_STATIC" )
endif()
########################################################################
# Install built library files & utilities
########################################################################
install(TARGETS ${INSTALL_TARGETS}
LIBRARY DESTINATION ${LIB_INSTALL_DIR} # .so/.dylib file
ARCHIVE DESTINATION ${LIB_INSTALL_DIR} # .lib file
RUNTIME DESTINATION bin # .dll file
)

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src/fl2k_file.c Normal file
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/*
* osmo-fl2k, turns FL2000-based USB 3.0 to VGA adapters into
* low cost DACs
*
* Copyright (C) 2016-2018 by Steve Markgraf <steve@steve-m.de>
*
* SPDX-License-Identifier: GPL-2.0+
*
* This program is free software: you can redistribute it and/or modify
* it 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, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#ifndef _WIN32
#include <unistd.h>
#else
#include <windows.h>
#include <io.h>
#include <fcntl.h>
#include "getopt/getopt.h"
#endif
#include "osmo-fl2k.h"
static fl2k_dev_t *dev = NULL;
static volatile int do_exit = 0;
static volatile int repeat = 1;
FILE *file;
char *txbuf = NULL;
void usage(void)
{
fprintf(stderr,
"fl2k_file, a sample player for FL2K VGA dongles\n\n"
"Usage:\n"
"\t[-d device_index (default: 0)]\n"
"\t[-r repeat file (default: 1)]\n"
"\t[-s samplerate (default: 100 MS/s)]\n"
"\tfilename (use '-' to read from stdin)\n\n"
);
exit(1);
}
#ifdef _WIN32
BOOL WINAPI
sighandler(int signum)
{
if (CTRL_C_EVENT == signum) {
fprintf(stderr, "Signal caught, exiting!\n");
fl2k_stop_tx(dev);
do_exit = 1;
return TRUE;
}
return FALSE;
}
#else
static void sighandler(int signum)
{
fprintf(stderr, "Signal caught, exiting!\n");
fl2k_stop_tx(dev);
do_exit = 1;
}
#endif
void fl2k_callback(fl2k_data_info_t *data_info)
{
int r, left = FL2K_BUF_LEN;
static uint32_t repeat_cnt = 0;
data_info->sampletype_signed = 1;
data_info->r_buf = txbuf;
data_info->g_buf = txbuf;
data_info->b_buf = txbuf;
while (!do_exit && (left > 0)) {
r = fread(txbuf + (FL2K_BUF_LEN - left), 1, left, file);
if (ferror(file))
fprintf(stderr, "File Error\n");
if (feof(file)) {
if (repeat) {
repeat_cnt++;
fprintf(stderr, "repeat %d\n", repeat_cnt);
rewind(file);
} else {
fl2k_stop_tx(dev);
do_exit = 1;
}
}
if (r > 0)
left -= r;
}
}
int main(int argc, char **argv)
{
#ifndef _WIN32
struct sigaction sigact, sigign;
#endif
int r, opt, i;
uint32_t samp_rate = 100000000;
uint32_t buf_num = 0;
int dev_index = 0;
void *status;
char *filename = NULL;
while ((opt = getopt(argc, argv, "d:r:s:")) != -1) {
switch (opt) {
case 'd':
dev_index = (uint32_t)atoi(optarg);
break;
case 'r':
repeat = (int)atoi(optarg);
break;
case 's':
samp_rate = (uint32_t)atof(optarg);
break;
default:
usage();
break;
}
}
if (argc <= optind)
usage();
else
filename = argv[optind];
if (dev_index < 0)
exit(1);
file = fopen(filename, "rb");
if (!file) {
fprintf(stderr, "Failed to open %s\n", filename);
goto out;
}
txbuf = malloc(FL2K_BUF_LEN);
if (!txbuf) {
fprintf(stderr, "malloc error!\n");
goto out;
}
fl2k_open(&dev, (uint32_t)dev_index);
if (NULL == dev) {
fprintf(stderr, "Failed to open fl2k device #%d.\n", dev_index);
goto out;
}
r = fl2k_start_tx(dev, fl2k_callback, NULL, 0);
/* Set the sample rate */
r = fl2k_set_sample_rate(dev, samp_rate);
if (r < 0)
fprintf(stderr, "WARNING: Failed to set sample rate.\n");
#ifndef _WIN32
sigact.sa_handler = sighandler;
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
sigign.sa_handler = SIG_IGN;
sigaction(SIGINT, &sigact, NULL);
sigaction(SIGTERM, &sigact, NULL);
sigaction(SIGQUIT, &sigact, NULL);
sigaction(SIGPIPE, &sigign, NULL);
#else
SetConsoleCtrlHandler( (PHANDLER_ROUTINE) sighandler, TRUE );
#endif
while (!do_exit) {
#ifndef _WIN32
usleep(500000);
#else
Sleep(0.5);
#endif
}
fl2k_close(dev);
out:
if (txbuf)
free(txbuf);
if (file && (file != stdin))
fclose(file);
return 0;
}

250
src/fl2k_tcp.c Normal file
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@ -0,0 +1,250 @@
/*
* osmo-fl2k, turns FL2000-based USB 3.0 to VGA adapters into
* low cost DACs
*
* Copyright (C) 2016-2018 by Steve Markgraf <steve@steve-m.de>
*
* SPDX-License-Identifier: GPL-2.0+
*
* This program is free software: you can redistribute it and/or modify
* it 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, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#ifndef _WIN32
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <netinet/tcp.h> /* for TCP_NODELAY */
#include <fcntl.h>
#else
#include <winsock2.h>
#include "getopt/getopt.h"
#endif
#include "osmo-fl2k.h"
#ifdef _WIN32
#pragma comment(lib, "ws2_32.lib")
typedef int socklen_t;
#else
#define closesocket close
#define SOCKADDR struct sockaddr
#define SOCKET int
#define SOCKET_ERROR -1
#endif
static SOCKET s;
static fl2k_dev_t *dev = NULL;
static volatile int do_exit = 0;
static volatile int connected = 0;
static char *txbuf = NULL;
static fd_set readfds;
static SOCKET sock;
void usage(void)
{
fprintf(stderr,
"fl2k_tcp, a spectrum client for FL2K VGA dongles\n\n"
"Usage:\t[-a server address]\n"
"\t[-d device index (default: 0)]\n"
"\t[-p port (default: 1234)]\n"
"\t[-s samplerate in Hz (default: 100 MS/s)]\n"
"\t[-b number of buffers (default: 4)]\n"
);
exit(1);
}
#ifdef _WIN32
BOOL WINAPI
sighandler(int signum)
{
if (CTRL_C_EVENT == signum) {
fprintf(stderr, "Signal caught, exiting!\n");
fl2k_stop_tx(dev);
do_exit = 1;
return TRUE;
}
return FALSE;
}
#else
static void sighandler(int signum)
{
fprintf(stderr, "Signal caught, exiting!\n");
do_exit = 1;
fl2k_stop_tx(dev);
}
#endif
void fl2k_callback(fl2k_data_info_t *data_info)
{
int left = FL2K_BUF_LEN;
int received;
int r;
struct timeval tv = { 1, 0 };
if (!connected)
return;
data_info->sampletype_signed = 1;
data_info->r_buf = txbuf;
while (!do_exit && (left > 0)) {
FD_ZERO(&readfds);
FD_SET(sock, &readfds);
tv.tv_sec = 1;
tv.tv_usec = 0;
r = select(sock + 1, &readfds, NULL, NULL, &tv);
if (r) {
received = recv(sock, txbuf + (FL2K_BUF_LEN - left), left, 0);
left -= received;
}
}
}
int main(int argc, char **argv)
{
int r, opt, i;
char *addr = "127.0.0.1";
int port = 1234;
uint32_t samp_rate = 100000000;
struct sockaddr_in local, remote;
uint32_t buf_num = 0;
int dev_index = 0;
int dev_given = 0;
int flag = 1;
#ifdef _WIN32
WSADATA wsd;
i = WSAStartup(MAKEWORD(2,2), &wsd);
#else
struct sigaction sigact, sigign;
#endif
while ((opt = getopt(argc, argv, "d:s:a:p:b:")) != -1) {
switch (opt) {
case 'd':
dev_index = (uint32_t)atoi(optarg);
dev_given = 1;
break;
case 's':
samp_rate = (uint32_t)atof(optarg);
break;
case 'a':
addr = optarg;
break;
case 'p':
port = atoi(optarg);
break;
case 'b':
buf_num = atoi(optarg);
break;
default:
usage();
break;
}
}
if (argc < optind)
usage();
if (dev_index < 0) {
exit(1);
}
txbuf = malloc(FL2K_BUF_LEN);
if (!txbuf) {
fprintf(stderr, "malloc error!\n");
exit(1);
}
fl2k_open(&dev, (uint32_t)dev_index);
if (NULL == dev) {
fprintf(stderr, "Failed to open fl2k device #%d.\n", dev_index);
exit(1);
}
r = fl2k_start_tx(dev, fl2k_callback, NULL, buf_num);
/* Set the sample rate */
r = fl2k_set_sample_rate(dev, samp_rate);
if (r < 0)
fprintf(stderr, "WARNING: Failed to set sample rate.\n");
#ifndef _WIN32
sigact.sa_handler = sighandler;
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
sigign.sa_handler = SIG_IGN;
sigaction(SIGINT, &sigact, NULL);
sigaction(SIGTERM, &sigact, NULL);
sigaction(SIGQUIT, &sigact, NULL);
sigaction(SIGPIPE, &sigact, NULL);
#else
SetConsoleCtrlHandler( (PHANDLER_ROUTINE) sighandler, TRUE );
#endif
sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
memset(&remote, 0, sizeof(remote));
remote.sin_family = AF_INET;
remote.sin_port = htons(port);
remote.sin_addr.s_addr = inet_addr(addr);
fprintf(stderr, "Connecting to %s:%d...\n", addr, port);
while (connect(sock, (struct sockaddr *)&remote, sizeof(remote)) != 0) {
#ifndef _WIN32
usleep(500000);
#else
Sleep(0.5);
#endif
if (do_exit)
goto out;
}
setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char *)&flag,sizeof(flag));
fprintf(stderr, "Connected\n");
connected = 1;
while (!do_exit) {
#ifndef _WIN32
usleep(500000);
#else
Sleep(0.5);
#endif
}
out:
free(txbuf);
fl2k_close(dev);
closesocket(s);
#ifdef _WIN32
WSACleanup();
#endif
return 0;
}

310
src/fl2k_test.c Normal file
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@ -0,0 +1,310 @@
/*
* osmo-fl2k, turns FL2000-based USB 3.0 to VGA adapters into
* low cost DACs
*
* Copyright (C) 2016-2018 by Steve Markgraf <steve@steve-m.de>
*
* based on rtl_test:
*
* Copyright (C) 2012-2014 by Steve Markgraf <steve@steve-m.de>
* Copyright (C) 2012-2014 by Kyle Keen <keenerd@gmail.com>
* Copyright (C) 2014 by Michael Tatarinov <kukabu@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*
* This program is free software: you can redistribute it and/or modify
* it 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, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#ifdef __APPLE__
#include <sys/time.h>
#else
#include <time.h>
#endif
#ifndef _WIN32
#include <unistd.h>
#else
#include <windows.h>
#include "getopt/getopt.h"
#endif
#include "osmo-fl2k.h"
#define DEFAULT_SAMPLE_RATE 100000000
#define PPM_DURATION 10
#define PPM_DUMP_TIME 1
struct time_generic
/* holds all the platform specific values */
{
#ifndef _WIN32
time_t tv_sec;
long tv_nsec;
#else
long tv_sec;
long tv_nsec;
int init;
LARGE_INTEGER frequency;
LARGE_INTEGER ticks;
#endif
};
static int do_exit = 0;
static fl2k_dev_t *dev = NULL;
static uint32_t samp_rate = DEFAULT_SAMPLE_RATE;
static unsigned int ppm_duration = PPM_DURATION;
static char *buffer;
static int cb_cnt = 0;
void usage(void)
{
fprintf(stderr,
"fl2k_test, clock accuracy test for FL2K VGA dongles,\n"
"also outputs a square wave at fs/2\n\n"
"Usage:\n"
"\t[-d device_index (default: 0)]\n"
"\t[-s samplerate (default: 100 MS/s)]\n"
);
exit(1);
}
#ifdef _WIN32
BOOL WINAPI
sighandler(int signum)
{
if (CTRL_C_EVENT == signum) {
fprintf(stderr, "Signal caught, exiting!\n");
fl2k_stop_tx(dev);
do_exit = 1;
return TRUE;
}
return FALSE;
}
#else
static void sighandler(int signum)
{
fprintf(stderr, "Signal caught, exiting!\n");
fl2k_stop_tx(dev);
do_exit = 1;
}
#endif
#ifndef _WIN32
static int ppm_gettime(struct time_generic *tg)
{
int rv = ENOSYS;
struct timespec ts;
#ifdef __unix__
rv = clock_gettime(CLOCK_MONOTONIC, &ts);
tg->tv_sec = ts.tv_sec;
tg->tv_nsec = ts.tv_nsec;
#elif __APPLE__
struct timeval tv;
rv = gettimeofday(&tv, NULL);
ts->tv_sec = tv.tv_sec;
ts->tv_nsec = tv.tv_usec * 1000;
#endif
return rv;
}
#endif
#ifdef _WIN32
static int ppm_gettime(struct time_generic *tg)
{
int rv;
int64_t frac;
if (!tg->init) {
QueryPerformanceFrequency(&tg->frequency);
tg->init = 1;
}
rv = QueryPerformanceCounter(&tg->ticks);
tg->tv_sec = tg->ticks.QuadPart / tg->frequency.QuadPart;
frac = (int64_t)(tg->ticks.QuadPart - (tg->tv_sec * tg->frequency.QuadPart));
tg->tv_nsec = (long)(frac * 1000000000L / (int64_t)tg->frequency.QuadPart);
return !rv;
}
#endif
static int ppm_report(uint64_t nsamples, uint64_t interval)
{
double real_rate, ppm;
real_rate = nsamples * 1e9 / interval;
ppm = 1e6 * (real_rate / (double)samp_rate - 1.);
return (int)round(ppm);
}
static void ppm_test(uint32_t len)
{
static uint64_t nsamples = 0;
static uint64_t interval = 0;
static uint64_t nsamples_total = 0;
static uint64_t interval_total = 0;
static struct time_generic ppm_now;
static struct time_generic ppm_recent;
static enum {
PPM_INIT_NO,
PPM_INIT_DUMP,
PPM_INIT_RUN
} ppm_init = PPM_INIT_NO;
ppm_gettime(&ppm_now);
if (ppm_init != PPM_INIT_RUN) {
/*
* Kyle Keen wrote:
* PPM_DUMP_TIME throws out the first N seconds of data.
* The dongle's PPM is usually very bad when first starting up,
* typically incorrect by more than twice the final value.
* Discarding the first few seconds allows the value to stabilize much faster.
*/
if (ppm_init == PPM_INIT_NO) {
ppm_recent.tv_sec = ppm_now.tv_sec + PPM_DUMP_TIME;
ppm_init = PPM_INIT_DUMP;
return;
}
if (ppm_init == PPM_INIT_DUMP && ppm_recent.tv_sec < ppm_now.tv_sec)
return;
ppm_recent = ppm_now;
ppm_init = PPM_INIT_RUN;
return;
}
nsamples += (uint64_t)len;
interval = (uint64_t)(ppm_now.tv_sec - ppm_recent.tv_sec);
if (interval < ppm_duration)
return;
interval *= 1000000000UL;
interval += (int64_t)(ppm_now.tv_nsec - ppm_recent.tv_nsec);
nsamples_total += nsamples;
interval_total += interval;
printf("real sample rate: %i current PPM: %i cumulative PPM: %i\n",
(int)((1000000000UL * nsamples) / interval),
ppm_report(nsamples, interval),
ppm_report(nsamples_total, interval_total));
ppm_recent = ppm_now;
nsamples = 0;
}
void fl2k_callback(fl2k_data_info_t *data_info)
{
/* drop first couple of callbacks until everything is settled */
if (cb_cnt > 20) {
ppm_test(FL2K_BUF_LEN);
} else {
/* as data is repetitive, it only needs to be handed
* over until all transfer buffers contain the data */
data_info->r_buf = buffer;
cb_cnt++;
}
}
int main(int argc, char **argv)
{
#ifndef _WIN32
struct sigaction sigact;
#endif
int r, opt, i;
uint32_t dev_index = 0;
while ((opt = getopt(argc, argv, "d:s:p::h")) != -1) {
switch (opt) {
case 'd':
dev_index = (uint32_t)atoi(optarg);
break;
case 's':
samp_rate = (uint32_t)atof(optarg);
break;
case 'p':
if (optarg)
ppm_duration = atoi(optarg);
break;
case 'h':
default:
usage();
break;
}
}
buffer = malloc(FL2K_BUF_LEN);
if (!buffer)
goto exit;
fl2k_open(&dev, (uint32_t)dev_index);
if (NULL == dev) {
fprintf(stderr, "Failed to open fl2k device #%d.\n", dev_index);
exit(1);
}
#ifndef _WIN32
sigact.sa_handler = sighandler;
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
sigaction(SIGINT, &sigact, NULL);
sigaction(SIGTERM, &sigact, NULL);
sigaction(SIGQUIT, &sigact, NULL);
sigaction(SIGPIPE, &sigact, NULL);
#else
SetConsoleCtrlHandler( (PHANDLER_ROUTINE) sighandler, TRUE );
#endif
/* initialize buffer with rect signal */
for (i = 0; i < FL2K_BUF_LEN; i += 2) {
buffer[i] = 0x00;
buffer[i+1] = 0xff;
}
r = fl2k_start_tx(dev, fl2k_callback, NULL, 0);
/* Set the sample rate */
r = fl2k_set_sample_rate(dev, samp_rate);
if (r < 0)
fprintf(stderr, "WARNING: Failed to set sample rate.\n");
samp_rate = fl2k_get_sample_rate(dev);
fprintf(stderr, "Reporting PPM error measurement every %u seconds...\n", ppm_duration);
fprintf(stderr, "Press ^C after a few minutes.\n");
while (!do_exit) {
#ifndef _WIN32
usleep(500000);
#else
Sleep(0.5);
#endif
}
if (do_exit) {
fprintf(stderr, "\nUser cancel, exiting...\n");
}
exit:
fl2k_close(dev);
free(buffer);
return 0;
}

1059
src/getopt/getopt.c Normal file

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180
src/getopt/getopt.h Normal file
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/* Declarations for getopt.
Copyright (C) 1989-1994, 1996-1999, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C 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.
The GNU C 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 the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#ifndef _GETOPT_H
#ifndef __need_getopt
# define _GETOPT_H 1
#endif
/* If __GNU_LIBRARY__ is not already defined, either we are being used
standalone, or this is the first header included in the source file.
If we are being used with glibc, we need to include <features.h>, but
that does not exist if we are standalone. So: if __GNU_LIBRARY__ is
not defined, include <ctype.h>, which will pull in <features.h> for us
if it's from glibc. (Why ctype.h? It's guaranteed to exist and it
doesn't flood the namespace with stuff the way some other headers do.) */
#if !defined __GNU_LIBRARY__
# include <ctype.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* For communication from `getopt' to the caller.
When `getopt' finds an option that takes an argument,
the argument value is returned here.
Also, when `ordering' is RETURN_IN_ORDER,
each non-option ARGV-element is returned here. */
extern char *optarg;
/* Index in ARGV of the next element to be scanned.
This is used for communication to and from the caller
and for communication between successive calls to `getopt'.
On entry to `getopt', zero means this is the first call; initialize.
When `getopt' returns -1, this is the index of the first of the
non-option elements that the caller should itself scan.
Otherwise, `optind' communicates from one call to the next
how much of ARGV has been scanned so far. */
extern int optind;
/* Callers store zero here to inhibit the error message `getopt' prints
for unrecognized options. */
extern int opterr;
/* Set to an option character which was unrecognized. */
extern int optopt;
#ifndef __need_getopt
/* Describe the long-named options requested by the application.
The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
of `struct option' terminated by an element containing a name which is
zero.
The field `has_arg' is:
no_argument (or 0) if the option does not take an argument,
required_argument (or 1) if the option requires an argument,
optional_argument (or 2) if the option takes an optional argument.
If the field `flag' is not NULL, it points to a variable that is set
to the value given in the field `val' when the option is found, but
left unchanged if the option is not found.
To have a long-named option do something other than set an `int' to
a compiled-in constant, such as set a value from `optarg', set the
option's `flag' field to zero and its `val' field to a nonzero
value (the equivalent single-letter option character, if there is
one). For long options that have a zero `flag' field, `getopt'
returns the contents of the `val' field. */
struct option
{
# if (defined __STDC__ && __STDC__) || defined __cplusplus
const char *name;
# else
char *name;
# endif
/* has_arg can't be an enum because some compilers complain about
type mismatches in all the code that assumes it is an int. */
int has_arg;
int *flag;
int val;
};
/* Names for the values of the `has_arg' field of `struct option'. */
# define no_argument 0
# define required_argument 1
# define optional_argument 2
#endif /* need getopt */
/* Get definitions and prototypes for functions to process the
arguments in ARGV (ARGC of them, minus the program name) for
options given in OPTS.
Return the option character from OPTS just read. Return -1 when
there are no more options. For unrecognized options, or options
missing arguments, `optopt' is set to the option letter, and '?' is
returned.
The OPTS string is a list of characters which are recognized option
letters, optionally followed by colons, specifying that that letter
takes an argument, to be placed in `optarg'.
If a letter in OPTS is followed by two colons, its argument is
optional. This behavior is specific to the GNU `getopt'.
The argument `--' causes premature termination of argument
scanning, explicitly telling `getopt' that there are no more
options.
If OPTS begins with `--', then non-option arguments are treated as
arguments to the option '\0'. This behavior is specific to the GNU
`getopt'. */
#if (defined __STDC__ && __STDC__) || defined __cplusplus
# ifdef __GNU_LIBRARY__
/* Many other libraries have conflicting prototypes for getopt, with
differences in the consts, in stdlib.h. To avoid compilation
errors, only prototype getopt for the GNU C library. */
extern int getopt (int __argc, char *const *__argv, const char *__shortopts);
# else /* not __GNU_LIBRARY__ */
extern int getopt ();
# endif /* __GNU_LIBRARY__ */
# ifndef __need_getopt
extern int getopt_long (int __argc, char *const *__argv, const char *__shortopts,
const struct option *__longopts, int *__longind);
extern int getopt_long_only (int __argc, char *const *__argv,
const char *__shortopts,
const struct option *__longopts, int *__longind);
/* Internal only. Users should not call this directly. */
extern int _getopt_internal (int __argc, char *const *__argv,
const char *__shortopts,
const struct option *__longopts, int *__longind,
int __long_only);
# endif
#else /* not __STDC__ */
extern int getopt ();
# ifndef __need_getopt
extern int getopt_long ();
extern int getopt_long_only ();
extern int _getopt_internal ();
# endif
#endif /* __STDC__ */
#ifdef __cplusplus
}
#endif
/* Make sure we later can get all the definitions and declarations. */
#undef __need_getopt
#endif /* getopt.h */

969
src/libosmo-fl2k.c Normal file
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/*
* osmo-fl2k, turns FL2000-based USB 3.0 to VGA adapters into
* low cost DACs
*
* Copyright (C) 2016-2018 by Steve Markgraf <steve@steve-m.de>
*
* SPDX-License-Identifier: GPL-2.0+
*
* This program is free software: you can redistribute it and/or modify
* it 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, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#ifndef _WIN32
#include <unistd.h>
#endif
#include <math.h>
#include <libusb.h>
#include <pthread.h>
/*
* All libusb callback functions should be marked with the LIBUSB_CALL macro
* to ensure that they are compiled with the same calling convention as libusb.
*
* If the macro isn't available in older libusb versions, we simply define it.
*/
#ifndef LIBUSB_CALL
#define LIBUSB_CALL
#endif
/* libusb < 1.0.9 doesn't have libusb_handle_events_timeout_completed */
#ifndef HAVE_LIBUSB_HANDLE_EVENTS_TIMEOUT_COMPLETED
#define libusb_handle_events_timeout_completed(ctx, tv, c) \
libusb_handle_events_timeout(ctx, tv)
#endif
#include "osmo-fl2k.h"
enum fl2k_async_status {
FL2K_INACTIVE = 0,
FL2K_CANCELING,
FL2K_RUNNING
};
typedef enum fl2k_buf_state {
BUF_EMPTY = 0,
BUF_SUBMITTED,
BUF_FILLED,
} fl2k_buf_state_t;
typedef struct fl2k_xfer_info {
fl2k_dev_t *dev;
uint64_t seq;
fl2k_buf_state_t state;
} fl2k_xfer_info_t;
struct fl2k_dev {
libusb_context *ctx;
struct libusb_device_handle *devh;
uint32_t xfer_num;
uint32_t xfer_buf_num;
uint32_t xfer_buf_len;
struct libusb_transfer **xfer;
unsigned char **xfer_buf;
fl2k_xfer_info_t *xfer_info;
fl2k_tx_cb_t cb;
void *cb_ctx;
enum fl2k_async_status async_status;
int async_cancel;
int use_zerocopy;
int terminate;
/* thread related */
pthread_t usb_worker_thread;
pthread_t sample_worker_thread;
pthread_mutex_t buf_mutex;
pthread_cond_t buf_cond;
double rate; /* Hz */
/* status */
int dev_lost;
int driver_active;
uint32_t underflow_cnt;
};
typedef struct fl2k_dongle {
uint16_t vid;
uint16_t pid;
const char *name;
} fl2k_dongle_t;
static fl2k_dongle_t known_devices[] = {
{ 0x1d5c, 0x2000, "FL2000DX OEM" },
};
#define DEFAULT_BUF_NUMBER 4
#define CTRL_IN (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN)
#define CTRL_OUT (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT)
#define CTRL_TIMEOUT 300
#define BULK_TIMEOUT 0
static int fl2k_read_reg(fl2k_dev_t *dev, uint16_t reg, uint32_t *val)
{
int r;
uint8_t data[4];
if (!dev || !val)
return FL2K_ERROR_INVALID_PARAM;
r = libusb_control_transfer(dev->devh, CTRL_IN, 0x40,
0, reg, data, 4, CTRL_TIMEOUT);
if (r < 4)
fprintf(stderr, "Error, short read from register!\n");
*val = (data[3] << 24) | (data[2] << 16) | (data[1] << 8) | data[0];
return r;
}
static int fl2k_write_reg(fl2k_dev_t *dev, uint16_t reg, uint32_t val)
{
uint8_t data[4];
if (!dev)
return FL2K_ERROR_INVALID_PARAM;
data[0] = val & 0xff;
data[1] = (val >> 8) & 0xff;
data[2] = (val >> 16) & 0xff;
data[3] = (val >> 24) & 0xff;
return libusb_control_transfer(dev->devh, CTRL_OUT, 0x41,
0, reg, data, 4, CTRL_TIMEOUT);
}
int fl2k_init_device(fl2k_dev_t *dev)
{
if (!dev)
return FL2K_ERROR_INVALID_PARAM;
/* initialization */
fl2k_write_reg(dev, 0x8020, 0xdf0000cc);
/* set DAC freq to lowest value possible to avoid
* underrun during init */
fl2k_write_reg(dev, 0x802c, 0x00416f3f);
fl2k_write_reg(dev, 0x8048, 0x7ffb8004);
fl2k_write_reg(dev, 0x803c, 0xd701004d);
fl2k_write_reg(dev, 0x8004, 0x0000031c);
fl2k_write_reg(dev, 0x8004, 0x0010039d);
fl2k_write_reg(dev, 0x8008, 0x07800898);
fl2k_write_reg(dev, 0x801c, 0x00000000);
fl2k_write_reg(dev, 0x0070, 0x04186085);
/* blanking magic */
fl2k_write_reg(dev, 0x8008, 0xfeff0780);
fl2k_write_reg(dev, 0x800c, 0x0000f001);
/* VSYNC magic */
fl2k_write_reg(dev, 0x8010, 0x0400042a);
fl2k_write_reg(dev, 0x8014, 0x0010002d);
fl2k_write_reg(dev, 0x8004, 0x00000002);
return 0;
}
int fl2k_deinit_device(fl2k_dev_t *dev)
{
int r = 0;
if (!dev)
return FL2K_ERROR_INVALID_PARAM;
/* TODO, power down DACs, PLL, put device in reset */
return r;
}
static double fl2k_reg_to_freq(uint32_t reg)
{
double sample_clock, offset, offs_div;
uint32_t pll_clock = 160000000;
uint8_t div = reg & 0x3f;
uint8_t out_div = (reg >> 8) & 0xf;
uint8_t frac = (reg >> 16) & 0xf;
uint8_t mult = (reg >> 20) & 0xf;
sample_clock = (pll_clock * mult) / (uint32_t)div;
offs_div = (pll_clock / 5.0f ) * mult;
offset = ((double)sample_clock/(offs_div/2)) * 1000000.0f;
sample_clock += (uint32_t)offset * frac;
sample_clock /= out_div;
// fprintf(stderr, "div: %d\tod: %d\tfrac: %d\tmult %d\tclock: %f\treg "
// "%08x\n", div, out_div, frac, mult, sample_clock, reg);
return sample_clock;
}
int fl2k_set_sample_rate(fl2k_dev_t *dev, uint32_t target_freq)
{
double sample_clock, error, last_error = 1e20f;
uint32_t reg = 0, result_reg = 0;
uint8_t div, mult, frac, out_div;
if (!dev)
return FL2K_ERROR_INVALID_PARAM;
/* Output divider (accepts value 1-15)
* works, but adds lots of phase noise, so do not use it */
out_div = 1;
/* Observation: PLL multiplier of 7 works, but has more phase
* noise. Prefer multiplier 6 and 5 */
for (mult = 6; mult >= 3; mult--) {
for (div = 63; div > 1; div--) {
for (frac = 1; frac <= 15; frac++) {
reg = (mult << 20) | (frac << 16) |
(0x60 << 8) | (out_div << 8) | div;
sample_clock = fl2k_reg_to_freq(reg);
error = sample_clock - (double)target_freq;
/* Keep closest match */
if (fabsf(error) < last_error) {
result_reg = reg;
last_error = fabsf(error);
}
}
}
}
sample_clock = fl2k_reg_to_freq(result_reg);
error = sample_clock - (double)target_freq;
dev->rate = sample_clock;
if (fabsf(error) > 1)
fprintf(stderr, "Requested sample rate %d not possible, using"
" %f, error is %f\n", target_freq, sample_clock, error);
return fl2k_write_reg(dev, 0x802c, result_reg);
}
uint32_t fl2k_get_sample_rate(fl2k_dev_t *dev)
{
if (!dev)
return 0;
return (uint32_t)dev->rate;
}
static fl2k_dongle_t *find_known_device(uint16_t vid, uint16_t pid)
{
unsigned int i;
fl2k_dongle_t *device = NULL;
for (i = 0; i < sizeof(known_devices)/sizeof(fl2k_dongle_t); i++ ) {
if (known_devices[i].vid == vid && known_devices[i].pid == pid) {
device = &known_devices[i];
break;
}
}
return device;
}
uint32_t fl2k_get_device_count(void)
{
int i,r;
libusb_context *ctx;
libusb_device **list;
uint32_t device_count = 0;
struct libusb_device_descriptor dd;
ssize_t cnt;
r = libusb_init(&ctx);
if (r < 0)
return 0;
cnt = libusb_get_device_list(ctx, &list);
for (i = 0; i < cnt; i++) {
libusb_get_device_descriptor(list[i], &dd);
if (find_known_device(dd.idVendor, dd.idProduct))
device_count++;
}
libusb_free_device_list(list, 1);
libusb_exit(ctx);
return device_count;
}
const char *fl2k_get_device_name(uint32_t index)
{
int i,r;
libusb_context *ctx;
libusb_device **list;
struct libusb_device_descriptor dd;
fl2k_dongle_t *device = NULL;
uint32_t device_count = 0;
ssize_t cnt;
r = libusb_init(&ctx);
if (r < 0)
return "";
cnt = libusb_get_device_list(ctx, &list);
for (i = 0; i < cnt; i++) {
libusb_get_device_descriptor(list[i], &dd);
device = find_known_device(dd.idVendor, dd.idProduct);
if (device) {
device_count++;
if (index == device_count - 1)
break;
}
}
libusb_free_device_list(list, 1);
libusb_exit(ctx);
if (device)
return device->name;
else
return "";
}
int fl2k_open(fl2k_dev_t **out_dev, uint32_t index)
{
int r;
int i;
libusb_device **list;
fl2k_dev_t *dev = NULL;
libusb_device *device = NULL;
uint32_t device_count = 0;
struct libusb_device_descriptor dd;
uint8_t reg;
ssize_t cnt;
dev = malloc(sizeof(fl2k_dev_t));
if (NULL == dev)
return -ENOMEM;
memset(dev, 0, sizeof(fl2k_dev_t));
r = libusb_init(&dev->ctx);
if(r < 0){
free(dev);
return -1;
}
libusb_set_debug(dev->ctx, 3);
dev->dev_lost = 1;
cnt = libusb_get_device_list(dev->ctx, &list);
for (i = 0; i < cnt; i++) {
device = list[i];
libusb_get_device_descriptor(list[i], &dd);
if (find_known_device(dd.idVendor, dd.idProduct)) {
device_count++;
}
if (index == device_count - 1)
break;
device = NULL;
}
if (!device) {
r = -1;
goto err;
}
r = libusb_open(device, &dev->devh);
libusb_free_device_list(list, 1);
if (r < 0) {
fprintf(stderr, "usb_open error %d\n", r);
if(r == LIBUSB_ERROR_ACCESS)
fprintf(stderr, "Please fix the device permissions, e.g. "
"by installing the udev rules file\n");
goto err;
}
/* If the adapter has an SPI flash for the Windows driver, we
* need to detach the USB mass storage driver first in order to
* open the device */
if (libusb_kernel_driver_active(dev->devh, 3) == 1) {
fprintf(stderr, "Kernel mass storage driver is attached, "
"detaching driver. This may take more than"
" 10 seconds!\n");
r = libusb_detach_kernel_driver(dev->devh, 3);
if (r < 0) {
fprintf(stderr, "Failed to detach mass storage "
"driver: %d\n", r);
goto err;
}
}
r = libusb_claim_interface(dev->devh, 0);
if (r < 0) {
fprintf(stderr, "usb_claim_interface 0 error %d\n", r);
goto err;
}
r = libusb_claim_interface(dev->devh, 1);
if (r < 0) {
fprintf(stderr, "usb_claim_interface 1 error %d\n", r);
goto err;
}
r = fl2k_init_device(dev);
if (r < 0)
goto err;
dev->dev_lost = 0;
found:
*out_dev = dev;
return 0;
err:
if (dev) {
if (dev->ctx)
libusb_exit(dev->ctx);
free(dev);
}
return r;
}
int fl2k_close(fl2k_dev_t *dev)
{
if (!dev)
return FL2K_ERROR_INVALID_PARAM;
if(!dev->dev_lost) {
/* block until all async operations have been completed (if any) */
while (FL2K_INACTIVE != dev->async_status) {
#ifdef _WIN32
Sleep(1);
#else
usleep(1000);
#endif
}
fl2k_deinit_device(dev);
}
libusb_release_interface(dev->devh, 0);
libusb_close(dev->devh);
libusb_exit(dev->ctx);
free(dev);
return 0;
}
static struct libusb_transfer *fl2k_get_next_xfer(fl2k_dev_t *dev,
fl2k_buf_state_t state)
{
unsigned int i;
int next_buf = -1;
uint64_t next_seq = 0;
fl2k_xfer_info_t *xfer_info;
for (i = 0; i < dev->xfer_buf_num; i++) {
xfer_info = (fl2k_xfer_info_t *)dev->xfer[i]->user_data;
if (!xfer_info)
continue;
if (xfer_info->state == state) {
if (state == BUF_EMPTY) {
return dev->xfer[i];
} else if ((xfer_info->seq < next_seq) || next_buf < 0) {
next_seq = xfer_info->seq;
next_buf = i;
}
}
}
if ((state == BUF_FILLED) && (next_buf >= 0))
return dev->xfer[next_buf];
else
return NULL;
}
static void LIBUSB_CALL _libusb_callback(struct libusb_transfer *xfer)
{
fl2k_xfer_info_t *xfer_info = (fl2k_xfer_info_t *)xfer->user_data;
fl2k_xfer_info_t *next_xfer_info;
fl2k_dev_t *dev = (fl2k_dev_t *)xfer_info->dev;
struct libusb_transfer *next_xfer = NULL;
if (LIBUSB_TRANSFER_COMPLETED == xfer->status) {
/* resubmit transfer */
if (FL2K_RUNNING == dev->async_status) {
/* get next transfer */
next_xfer = fl2k_get_next_xfer(dev, BUF_FILLED);
if (next_xfer) {
next_xfer_info = (fl2k_xfer_info_t *) next_xfer->user_data;
/* Submit next filled transfer */
next_xfer_info->state = BUF_SUBMITTED;
libusb_submit_transfer(next_xfer);
xfer_info->state = BUF_EMPTY;
pthread_cond_signal(&dev->buf_cond);
} else {
/* We need to re-submit the transfer
* in any case, as otherwise the device
* stops to output data and hangs
* (happens only in the hacked 'gapless'
* mode without HSYNC and VSYNC) */
libusb_submit_transfer(xfer);
pthread_cond_signal(&dev->buf_cond);
dev->underflow_cnt++;
}
}
} else if (LIBUSB_TRANSFER_CANCELLED != xfer->status) {
dev->dev_lost = 1;
fl2k_stop_tx(dev);
pthread_cond_signal(&dev->buf_cond);
fprintf(stderr, "cb transfer status: %d, "
"canceling...\n", xfer->status);
}
}
static int fl2k_alloc_submit_transfers(fl2k_dev_t *dev)
{
unsigned int i;
int r = 0;
if (!dev)
return FL2K_ERROR_INVALID_PARAM;
dev->xfer = malloc(dev->xfer_buf_num * sizeof(struct libusb_transfer *));
for (i = 0; i < dev->xfer_buf_num; ++i)
dev->xfer[i] = libusb_alloc_transfer(0);
dev->xfer_buf = malloc(dev->xfer_buf_num * sizeof(unsigned char *));
dev->xfer_info = malloc(dev->xfer_buf_num * sizeof(fl2k_xfer_info_t));
#if defined (__linux__) && LIBUSB_API_VERSION >= 0x01000105
fprintf(stderr, "Using %d zero-copy buffers\n", dev->xfer_buf_num);
dev->use_zerocopy = 1;
for (i = 0; i < dev->xfer_buf_num; ++i) {
dev->xfer_buf[i] = libusb_dev_mem_alloc(dev->devh, dev->xfer_buf_len);
if (!dev->xfer_buf[i]) {
fprintf(stderr, "Failed to allocate zerocopy"
" buffer for transfer %d\n",
i);
// TODO: free dev_mem buffers again
dev->use_zerocopy = 0;
break;
}
}
#endif
if (!dev->use_zerocopy) {
for (i = 0; i < dev->xfer_buf_num; ++i) {
dev->xfer_buf[i] = malloc(dev->xfer_buf_len);
if (!dev->xfer_buf[i])
return FL2K_ERROR_NO_MEM;
}
}
/* fill transfers */
for (i = 0; i < dev->xfer_buf_num; ++i) {
libusb_fill_bulk_transfer(dev->xfer[i],
dev->devh,
0x01,
dev->xfer_buf[i],
dev->xfer_buf_len,
_libusb_callback,
&dev->xfer_info[i],
0);
dev->xfer_info[i].dev = dev;
dev->xfer_info[i].state = BUF_EMPTY;
/* if we allocate the memory through the Kernel, it is
* already cleared */
if (!dev->use_zerocopy)
memset(dev->xfer_buf[i], 0, dev->xfer_buf_len);
}
/* submit transfers */
for (i = 0; i < dev->xfer_num; ++i) {
r = libusb_submit_transfer(dev->xfer[i]);
dev->xfer_info[i].state = BUF_SUBMITTED;
if (r < 0) {
fprintf(stderr, "Failed to submit transfer %i\n"
"Please increase your allowed "
"usbfs buffer size with the "
"following command:\n"
"echo 0 > /sys/module/usbcore"
"/parameters/usbfs_memory_mb\n", i);
break;
}
}
return 0;
}
static int _fl2k_free_async_buffers(fl2k_dev_t *dev)
{
unsigned int i;
if (!dev)
return FL2K_ERROR_INVALID_PARAM;
if (dev->xfer) {
for (i = 0; i < dev->xfer_buf_num; ++i) {
if (dev->xfer[i]) {
libusb_free_transfer(dev->xfer[i]);
}
}
free(dev->xfer);
dev->xfer = NULL;
}
if (dev->xfer_buf) {
for (i = 0; i < dev->xfer_buf_num; ++i) {
if (dev->xfer_buf[i]) {
if (dev->use_zerocopy) {
libusb_dev_mem_free(dev->devh,
dev->xfer_buf[i],
dev->xfer_buf_len);
} else {
free(dev->xfer_buf[i]);
}
}
}
free(dev->xfer_buf);
dev->xfer_buf = NULL;
}
return 0;
}
static void *fl2k_usb_worker(void *arg)
{
fl2k_dev_t *dev = (fl2k_dev_t *)arg;
struct timeval tv = { 1, 0 };
struct timeval zerotv = { 0, 0 };
enum fl2k_async_status next_status = FL2K_INACTIVE;
int r = 0;
unsigned int i;
while (FL2K_RUNNING == dev->async_status) {
r = libusb_handle_events_timeout_completed(dev->ctx, &tv,
&dev->async_cancel);
}
while (FL2K_INACTIVE != dev->async_status) {
r = libusb_handle_events_timeout_completed(dev->ctx, &tv,
&dev->async_cancel);
if (r < 0) {
/*fprintf(stderr, "handle_events returned: %d\n", r);*/
if (r == LIBUSB_ERROR_INTERRUPTED) /* stray signal */
continue;
break;
}
if (FL2K_CANCELING == dev->async_status) {
next_status = FL2K_INACTIVE;
if (!dev->xfer)
break;
for (i = 0; i < dev->xfer_buf_num; ++i) {
if (!dev->xfer[i])
continue;
if (LIBUSB_TRANSFER_CANCELLED !=
dev->xfer[i]->status) {
r = libusb_cancel_transfer(dev->xfer[i]);
/* handle events after canceling
* to allow transfer status to
* propagate */
libusb_handle_events_timeout_completed(dev->ctx,
&zerotv, NULL);
if (r < 0)
continue;
next_status = FL2K_CANCELING;
}
}
if (dev->dev_lost || FL2K_INACTIVE == next_status) {
/* handle any events that still need to
* be handled before exiting after we
* just cancelled all transfers */
libusb_handle_events_timeout_completed(dev->ctx,
&zerotv, NULL);
break;
}
}
}
_fl2k_free_async_buffers(dev);
dev->async_status = next_status;
pthread_exit(NULL);
}
/* Buffer format conversion functions for R, G, B DACs */
static inline void fl2k_convert_r(char *out,
char *in,
uint32_t len,
uint8_t offset)
{
unsigned int i, j = 0;
if (!in || !out)
return;
for (i = 0; i < len; i += 24) {
out[i+ 6] = in[j++] + offset;
out[i+ 1] = in[j++] + offset;
out[i+12] = in[j++] + offset;
out[i+15] = in[j++] + offset;
out[i+10] = in[j++] + offset;
out[i+21] = in[j++] + offset;
out[i+16] = in[j++] + offset;
out[i+19] = in[j++] + offset;
}
}
static inline void fl2k_convert_g(char *out,
char *in,
uint32_t len,
uint8_t offset)
{
unsigned int i, j = 0;
if (!in || !out)
return;
for (i = 0; i < len; i += 24) {
out[i+ 5] = in[j++] + offset;
out[i+ 0] = in[j++] + offset;
out[i+ 3] = in[j++] + offset;
out[i+14] = in[j++] + offset;
out[i+ 9] = in[j++] + offset;
out[i+20] = in[j++] + offset;
out[i+23] = in[j++] + offset;
out[i+18] = in[j++] + offset;
}
}
static inline void fl2k_convert_b(char *out,
char *in,
uint32_t len,
uint8_t offset)
{
unsigned int i, j = 0;
if (!in || !out)
return;
for (i = 0; i < len; i += 24) {
out[i+ 4] = in[j++] + offset;
out[i+ 7] = in[j++] + offset;
out[i+ 2] = in[j++] + offset;
out[i+13] = in[j++] + offset;
out[i+ 8] = in[j++] + offset;
out[i+11] = in[j++] + offset;
out[i+22] = in[j++] + offset;
out[i+17] = in[j++] + offset;
}
}
static void *fl2k_sample_worker(void *arg)
{
int r = 0;
unsigned int i, j;
fl2k_dev_t *dev = (fl2k_dev_t *)arg;
fl2k_xfer_info_t *xfer_info = NULL;
struct libusb_transfer *xfer = NULL;
char *out_buf = NULL;
fl2k_data_info_t data_info;
uint32_t underflows = 0;
uint64_t buf_cnt = 0;
while (FL2K_RUNNING == dev->async_status) {
memset(&data_info, 0, sizeof(fl2k_data_info_t));
data_info.len = FL2K_BUF_LEN;
data_info.underflow_cnt = dev->underflow_cnt;
data_info.ctx = dev->cb_ctx;
if (dev->underflow_cnt > underflows) {
fprintf(stderr, "Underflow! Skipped %d buffers\n",
dev->underflow_cnt - underflows);
underflows = dev->underflow_cnt;
}
/* call application callback to get samples */
if (dev->cb)
dev->cb(&data_info);
xfer = fl2k_get_next_xfer(dev, BUF_EMPTY);
if (!xfer) {
pthread_cond_wait(&dev->buf_cond, &dev->buf_mutex);
/* in the meantime, the device might be gone */
if (FL2K_RUNNING != dev->async_status)
break;
xfer = fl2k_get_next_xfer(dev, BUF_EMPTY);
if (!xfer) {
fprintf(stderr, "no free transfer, skipping"
" input buffer\n");
continue;
}
}
/* We have an empty USB transfer buffer */
xfer_info = (fl2k_xfer_info_t *)xfer->user_data;
out_buf = (char *)xfer->buffer;
/* Re-arrange and copy bytes in buffer for DACs */
fl2k_convert_r(out_buf, data_info.r_buf, dev->xfer_buf_len,
data_info.sampletype_signed ? 128 : 0);
fl2k_convert_g(out_buf, data_info.g_buf, dev->xfer_buf_len,
data_info.sampletype_signed ? 128 : 0);
fl2k_convert_b(out_buf, data_info.b_buf, dev->xfer_buf_len,
data_info.sampletype_signed ? 128 : 0);
xfer_info->seq = buf_cnt++;
xfer_info->state = BUF_FILLED;
}
/* notify application if we've lost the device */
if (dev->dev_lost && dev->cb) {
data_info.device_error = 1;
dev->cb(&data_info);
fl2k_stop_tx(dev);
}
pthread_exit(NULL);
}
int fl2k_start_tx(fl2k_dev_t *dev, fl2k_tx_cb_t cb, void *ctx,
uint32_t buf_num)
{
int r = 0;
int i;
pthread_attr_t attr;
if (!dev || !cb)
return FL2K_ERROR_INVALID_PARAM;
dev->async_status = FL2K_RUNNING;
dev->async_cancel = 0;
dev->cb = cb;
dev->cb_ctx = ctx;
if (buf_num > 0)
dev->xfer_num = buf_num;
else
dev->xfer_num = DEFAULT_BUF_NUMBER;
/* have two spare buffers that can be filled while the
* others are submitted */
dev->xfer_buf_num = dev->xfer_num + 2;
dev->xfer_buf_len = FL2K_XFER_LEN;
r = fl2k_alloc_submit_transfers(dev);
if (r < 0)
goto cleanup;
pthread_mutex_init(&dev->buf_mutex, NULL);
pthread_cond_init(&dev->buf_cond, NULL);
pthread_attr_init(&attr);
r = pthread_create(&dev->usb_worker_thread, &attr,
fl2k_usb_worker, (void *)dev);
if (r < 0) {
fprintf(stderr, "Error spawning USB worker thread!\n");
goto cleanup;
}
r = pthread_create(&dev->sample_worker_thread, &attr,
fl2k_sample_worker, (void *)dev);
if (r < 0) {
fprintf(stderr, "Error spawning sample worker thread!\n");
goto cleanup;
}
pthread_attr_destroy(&attr);
return 0;
cleanup:
_fl2k_free_async_buffers(dev);
return FL2K_ERROR_BUSY;
}
int fl2k_stop_tx(fl2k_dev_t *dev)
{
if (!dev)
return FL2K_ERROR_INVALID_PARAM;
/* if streaming, try to cancel gracefully */
if (FL2K_RUNNING == dev->async_status) {
dev->async_status = FL2K_CANCELING;
dev->async_cancel = 1;
return 0;
/* if called while in pending state, change the state forcefully */
} else if (FL2K_INACTIVE != dev->async_status) {
dev->async_status = FL2K_INACTIVE;
return 0;
}
return FL2K_ERROR_BUSY;
}

34
src/libosmo-fl2k.rc.in Normal file
View File

@ -0,0 +1,34 @@
#include <afxres.h>
VS_VERSION_INFO VERSIONINFO
FILEVERSION 0,0,0,0
PRODUCTVERSION 0,0,0,0
FILEFLAGSMASK 0x3fL
#ifndef NDEBUG
FILEFLAGS 0x0L
#else
FILEFLAGS 0x1L
#endif
FILEOS VOS__WINDOWS32
FILETYPE VFT_DLL
FILESUBTYPE VFT2_DRV_INSTALLABLE
BEGIN
BLOCK "StringFileInfo"
BEGIN
BLOCK "040904b0"
BEGIN
VALUE "FileDescription", "osmocom libosmo-fl2k"
VALUE "FileVersion", "@VERSION@"
VALUE "InternalName", "libosmo-fl2k.dll"
VALUE "LegalCopyright", "Licensed under GPLv2+"
VALUE "OriginalFilename", "libosmo-fl2k.dll"
VALUE "ProductName", "osmocom libosmo-fl2k"
VALUE "ProductVersion", "@VERSION@"
END
END
BLOCK "VarFileInfo"
BEGIN
VALUE "Translation", 0x409, 1200
END
END