summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorBob Ham <bob.ham@collabora.com>2015-01-21 09:41:42 (GMT)
committerBob Ham <bob.ham@collabora.com>2015-01-21 09:41:42 (GMT)
commit66884583d01a5cce0c3e94b40289d3eef8bb2b7d (patch)
tree236129c5e185c31fcd241e1438b890fe02158258
downloadgst-sdr-j-fm-66884583d01a5cce0c3e94b40289d3eef8bb2b7d.tar.gz
gst-sdr-j-fm-66884583d01a5cce0c3e94b40289d3eef8bb2b7d.tar.xz
Initial check-in of gst-sdr-j-fm boilerplate code
-rw-r--r--AUTHORS2
-rw-r--r--COPYING339
-rw-r--r--ChangeLog0
-rw-r--r--Makefile.am3
-rw-r--r--NEWS1
-rw-r--r--README23
-rw-r--r--REQUIREMENTS10
-rwxr-xr-xautogen.sh18
-rw-r--r--configure.ac93
-rw-r--r--src/Makefile.am12
-rw-r--r--src/gstsdrjfm.c44
-rw-r--r--src/gstsdrjfmsrc.c235
-rw-r--r--src/gstsdrjfmsrc.h55
-rw-r--r--tests/Makefile.am9
-rw-r--r--tests/tune.c204
-rwxr-xr-xtests/tune.sh4
16 files changed, 1052 insertions, 0 deletions
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..4004732
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,2 @@
+Original SDR-J software by Jan van Katwijk <j.vankatwijk@gmail.com>
+GST element by Bob Ham <bob.ham@collabora.com>
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..d511905
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,339 @@
+ 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
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+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
+the GNU Lesser General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have. You must make sure that they, too, receive or can get the
+source code. And you must show them these terms so they know their
+rights.
+
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software. If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+ Finally, any free program is threatened constantly by software
+patents. We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary. To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
+ parties under the terms of this License.
+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
+ License. (Exception: if the Program itself is interactive but
+ does not normally print such an announcement, your work based on
+ the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+ a) Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+ b) Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your
+ cost of physically performing source distribution, a complete
+ machine-readable copy of the corresponding source code, to be
+ distributed under the terms of Sections 1 and 2 above on a medium
+ customarily used for software interchange; or,
+
+ c) Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is
+ allowed only for noncommercial distribution and only if you
+ received the program in object code or executable form with such
+ an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it. For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable. However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+ 4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+ 5. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Program or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+ 8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+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.
diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/ChangeLog
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..bb736fc
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,3 @@
+SUBDIRS = src tests
+
+EXTRA_DIST = autogen.sh
diff --git a/NEWS b/NEWS
new file mode 100644
index 0000000..3e966ab
--- /dev/null
+++ b/NEWS
@@ -0,0 +1 @@
+Initial release - working FM radio
diff --git a/README b/README
new file mode 100644
index 0000000..546c7b5
--- /dev/null
+++ b/README
@@ -0,0 +1,23 @@
+gst-sdr-j-fm is a GStreamer wrapper/fork around the SDR-J FM receiver.
+It provides ability to playback FM radio from signal acquires from devices
+supported by the RTL SDR projects. Demodulation is done in software re-using
+code initially found in the SDR-J software.
+
+To use it, you need GStreamer 1.0.
+
+Install the GStreamer 1.0 dev packages, then just build and install this module.
+
+For example, again on Raspbian:
+
+./autogen --prefix=/usr
+make
+sudo make install
+
+Then, you can try out the playing fm radio:
+
+gst-launch-1.0 playbin uri=fm:///99.9
+
+gst-inspect-1.0 sdrjfmsrc to get an idea of the properties that have been
+implemented.
+
+See the REQUIREMENTS file for the full list of build requirements.
diff --git a/REQUIREMENTS b/REQUIREMENTS
new file mode 100644
index 0000000..4ddfa52
--- /dev/null
+++ b/REQUIREMENTS
@@ -0,0 +1,10 @@
+gst-sdr-j-fm requires:
+
+ - autoconf
+ - automake
+ - libtool
+ - libgstreamer1.0-dev
+ - libgstreamer-plugins-base1.0-dev
+ - librtlsdr-dev
+
+Packge names may vary between distros.
diff --git a/autogen.sh b/autogen.sh
new file mode 100755
index 0000000..9df38d3
--- /dev/null
+++ b/autogen.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+# you can either set the environment variables AUTOCONF, AUTOHEADER, AUTOMAKE,
+# ACLOCAL, AUTOPOINT and/or LIBTOOLIZE to the right versions, or leave them
+# unset and get the defaults
+
+autoreconf --verbose --force --install --make || {
+ echo 'autogen.sh failed';
+ exit 1;
+}
+
+./configure || {
+ echo 'configure failed';
+ exit 1;
+}
+
+echo
+echo "Now type 'make' to compile this module."
+echo
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..6ab1546
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,93 @@
+dnl required version of autoconf
+AC_PREREQ([2.53])
+
+AC_INIT([gstsdrjfm],[1.0.0])
+
+dnl required versions of gstreamer and plugins-base
+GST_REQUIRED=1.0.0
+GSTPB_REQUIRED=1.0.0
+
+AC_CONFIG_SRCDIR([src/gstsdrjfm.c])
+AC_CONFIG_HEADERS([config.h])
+
+dnl required version of automake
+AM_INIT_AUTOMAKE([-Wno-portability 1.11 no-dist-gzip dist-xz tar-ustar subdir-objects])
+
+dnl enable mainainer mode by default
+AM_MAINTAINER_MODE([enable])
+
+dnl Pretty Printing
+m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])],
+ [AM_DEFAULT_VERBOSITY=1
+ AC_SUBST(AM_DEFAULT_VERBOSITY)])
+
+dnl check for tools (compiler etc.)
+AC_PROG_CC
+AC_PROG_CXX
+
+dnl required version of libtool
+LT_PREREQ([2.2.6])
+LT_INIT
+
+dnl give error and exit if we don't have pkgconfig
+AC_CHECK_PROG(HAVE_PKGCONFIG, pkg-config, [ ], [
+ AC_MSG_ERROR([You need to have pkg-config installed!])
+])
+AC_PATH_PROG(GLIB_MKENUMS, glib-mkenums)
+
+dnl gstreamer deps
+PKG_CHECK_MODULES(GST, [
+ gstreamer-1.0 >= $GST_REQUIRED
+ gstreamer-base-1.0 >= $GST_REQUIRED
+ gstreamer-audio-1.0 >= $GSTPB_REQUIRED
+], [
+ AC_SUBST(GST_CFLAGS)
+ AC_SUBST(GST_LIBS)
+], [
+ AC_MSG_ERROR([
+ You need to install or upgrade the GStreamer development
+ packages on your system. On debian-based systems these are
+ libgstreamer1.0-dev and libgstreamer-plugins-base1.0-dev.
+ on RPM-based systems gstreamer1.0-devel, libgstreamer1.0-devel
+ or similar. The minimum version required is $GST_REQUIRED.
+ ])
+])
+
+dnl need libstlsdr to capture
+PKG_CHECK_MODULES(RS, [
+ librtlsdr
+], [
+ AC_SUBST(RS_CFLAGS)
+ AC_SUBST(RS_LIBS)
+], [
+ AC_MSG_ERROR([
+ You need to install development package of RTL SDR library.
+ ])
+])
+
+dnl check if compiler understands -Wall (if yes, add -Wall to GST_CFLAGS)
+AC_MSG_CHECKING([to see if compiler understands -Wall])
+save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Wall"
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([ ], [ ])], [
+ GST_CFLAGS="$GST_CFLAGS -Wall"
+ AC_MSG_RESULT([yes])
+], [
+ AC_MSG_RESULT([no])
+])
+
+dnl set the plugindir where plugins should be installed (for src/Makefile.am)
+if test "x${prefix}" = "x$HOME"; then
+ plugindir="$HOME/.gstreamer-1.0/plugins"
+else
+ plugindir="`pkg-config gstreamer-1.0 --variable pluginsdir`"
+fi
+AC_SUBST(plugindir)
+
+dnl set proper LDFLAGS for plugins
+GST_PLUGIN_LDFLAGS='-module -avoid-version -export-symbols-regex [_]*\(gst_\|Gst\|GST_\).*'
+AC_SUBST(GST_PLUGIN_LDFLAGS)
+
+AC_CONFIG_FILES([Makefile src/Makefile tests/Makefile])
+AC_OUTPUT
+
diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..0d5d938
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,12 @@
+plugin_LTLIBRARIES = libgstsdrjfm.la
+
+libgstsdrjfm_la_SOURCES = gstsdrjfm.c \
+ gstsdrjfmsrc.c
+
+libgstsdrjfm_la_CFLAGS = $(GST_CFLAGS) $(RS_CFLAGS)
+libgstsdrjfm_la_LIBADD = $(GST_LIBS) $(RS_LIBS)
+libgstsdrjfm_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+libgstsdrjfm_la_LIBTOOLFLAGS = $(GST_PLUGIN_LIBTOOLFLAGS)
+
+noinst_HEADERS = gstsdrjfmsrc.h
+
diff --git a/src/gstsdrjfm.c b/src/gstsdrjfm.c
new file mode 100644
index 0000000..3fa6f3e
--- /dev/null
+++ b/src/gstsdrjfm.c
@@ -0,0 +1,44 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstsdrjfmsrc.h"
+
+GST_DEBUG_CATEGORY (sdrjfm_debug);
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ if (!gst_element_register (plugin, "sdrjfmsrc", GST_RANK_SECONDARY,
+ GST_TYPE_SDRJFM_SRC))
+ return FALSE;
+
+ GST_DEBUG_CATEGORY_INIT (sdrjfm_debug, "sdrjfm", 0, "SDR-J FM plugin");
+
+ return TRUE;
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ sdrjfm,
+ "SDR-J FM support for GStreamer",
+ plugin_init, VERSION, "GPL", "sdrjfm", "http://www.collabora.com");
diff --git a/src/gstsdrjfmsrc.c b/src/gstsdrjfmsrc.c
new file mode 100644
index 0000000..6a76b6d
--- /dev/null
+++ b/src/gstsdrjfmsrc.c
@@ -0,0 +1,235 @@
+ /* GStreamer
+ * Copyright (C) 2014, Collabora Ltd. <info@collabora.com>
+ *
+ * gstsdrjfmsrc.c:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+/* Note, the plugin code is left LPGLv2, so this code can be copy pasted to
+ * form other FM sources later if it makes sense. But the plugin will remain
+ * GPLv2 since the backend is from GPLv2 program.
+ */
+
+/**
+ * SECTION:element-sdrjfmsrc
+ *
+ * This element lets capture from RTL SDR supported radio card.
+ *
+ * <refsect2>
+ * <title>Example pipelines</title>
+ * |[
+ * gst-launch-1.0 -v sdrjfmsrc frequency=97700000 ! pulsesink
+ * ]| will playback live FM radio channel 97.7.
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "gstsdrjfmsrc.h"
+
+GST_DEBUG_CATEGORY_EXTERN (sdrjfm_debug);
+#define GST_CAT_DEFAULT sdrjfm_debug
+
+#define DEFAULT_FREQUENCY 96700
+
+enum
+{
+ PROP_0,
+ PROP_FREQUENCY
+};
+
+/* signals and args */
+enum
+{
+};
+
+#define gst_sdrjfm_src_parent_class parent_class
+G_DEFINE_TYPE (GstSdrjfmSrc, gst_sdrjfm_src, GST_TYPE_AUDIO_SRC);
+
+static GstStaticPadTemplate sdrjfmsrc_src_factory = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/x-raw, "
+ "format = (string) " GST_AUDIO_NE(S16) ", "
+ "layout = (string) interleaved, "
+ "rate = (int) 44100, "
+ "channels = (int) 2; ")
+ );
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+static void
+gst_sdrjfm_src_set_frequency (GstSdrjfmSrc *self, gint frequency)
+{
+}
+
+static gint
+gst_sdrjfm_src_get_frequency (GstSdrjfmSrc *self)
+{
+}
+
+static void
+ gst_sdrjfm_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstSdrjfmSrc *self = GST_SDRJFM_SRC (object);
+
+ GST_OBJECT_LOCK (self);
+
+ switch (prop_id) {
+ case PROP_FREQUENCY:
+ gst_sdrjfm_src_set_frequency (self, g_value_get_int (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+
+ GST_OBJECT_UNLOCK (self);
+}
+
+static void
+gst_sdrjfm_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstSdrjfmSrc *self = GST_SDRJFM_SRC (object);
+
+ GST_OBJECT_LOCK (self);
+
+ switch (prop_id) {
+ case PROP_FREQUENCY:
+ g_value_set_int (value, gst_sdrjfm_src_get_frequency (self));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+
+ GST_OBJECT_UNLOCK (self);
+}
+
+static gboolean
+gst_sdrjfm_src_open (GstAudioSrc * asrc)
+{
+ GstSdrjfmSrc *self = GST_SDRJFM_SRC (asrc);
+}
+
+static gboolean
+gst_sdrjfm_src_close (GstAudioSrc * asrc)
+{
+ GstSdrjfmSrc *self = GST_SDRJFM_SRC (asrc);
+}
+
+static gboolean
+gst_sdrjfm_src_prepare (GstAudioSrc * asrc, GstAudioRingBufferSpec * spec)
+{
+ GstSdrjfmSrc *self = GST_SDRJFM_SRC (asrc);
+}
+
+static gboolean
+gst_sdrjfm_src_unprepare (GstAudioSrc * asrc)
+{
+ GstSdrjfmSrc *self = GST_SDRJFM_SRC (asrc);
+}
+
+static guint
+gst_sdrjfm_src_read (GstAudioSrc * asrc, gpointer data, guint length,
+ GstClockTime * timestamp)
+{
+ GstSdrjfmSrc *self = GST_SDRJFM_SRC (asrc);
+}
+
+static guint
+gst_sdrjfm_src_delay (GstAudioSrc * asrc)
+{
+ GstSdrjfmSrc *self = GST_SDRJFM_SRC (asrc);
+}
+
+static void
+gst_sdrjfm_src_reset (GstAudioSrc * asrc)
+{
+ GST_FIXME_OBJECT (asrc, "not implemented");
+}
+
+static void
+gst_sdrjfm_src_dispose (GObject * object)
+{
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gst_sdrjfm_src_finalize (GstSdrjfmSrc * self)
+{
+ G_OBJECT_CLASS (parent_class)->finalize (G_OBJECT (self));
+}
+
+static void
+gst_sdrjfm_src_init (GstSdrjfmSrc * self)
+{
+ GstAudioBaseSrc *basrc = GST_AUDIO_BASE_SRC (self);
+
+ self->frequency = DEFAULT_FREQUENCY;
+
+ basrc->latency_time = 132000; /* base on buffer size */
+ basrc->buffer_time = 8 * basrc->latency_time;
+
+ gst_audio_base_src_set_provide_clock (basrc, FALSE);
+}
+
+static void
+gst_sdrjfm_src_class_init (GstSdrjfmSrcClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+ GstAudioSrcClass *gstaudiosrc_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+ gstaudiosrc_class = (GstAudioSrcClass *) klass;
+
+ gobject_class->dispose = gst_sdrjfm_src_dispose;
+ gobject_class->finalize = (GObjectFinalizeFunc) gst_sdrjfm_src_finalize;
+ gobject_class->get_property = gst_sdrjfm_src_get_property;
+ gobject_class->set_property = gst_sdrjfm_src_set_property;
+
+
+ gstaudiosrc_class->open = GST_DEBUG_FUNCPTR (gst_sdrjfm_src_open);
+ gstaudiosrc_class->prepare = GST_DEBUG_FUNCPTR (gst_sdrjfm_src_prepare);
+ gstaudiosrc_class->unprepare = GST_DEBUG_FUNCPTR (gst_sdrjfm_src_unprepare);
+ gstaudiosrc_class->close = GST_DEBUG_FUNCPTR (gst_sdrjfm_src_close);
+ gstaudiosrc_class->read = GST_DEBUG_FUNCPTR (gst_sdrjfm_src_read);
+ gstaudiosrc_class->delay = GST_DEBUG_FUNCPTR (gst_sdrjfm_src_delay);
+ gstaudiosrc_class->reset = GST_DEBUG_FUNCPTR (gst_sdrjfm_src_reset);
+
+ g_object_class_install_property (gobject_class, PROP_FREQUENCY,
+ g_param_spec_int ("frequency", "Frequency",
+ "Frequency to receive", 0, G_MAXINT, DEFAULT_FREQUENCY,
+ G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_STATIC_STRINGS));
+
+ gst_element_class_set_static_metadata (gstelement_class, "FM Radio Source (SDR-J)",
+ "Source/Audio",
+ "Capture and demodulate FM radio",
+ "Collabora <info@collabora.com>");
+
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&sdrjfmsrc_src_factory));
+}
+
diff --git a/src/gstsdrjfmsrc.h b/src/gstsdrjfmsrc.h
new file mode 100644
index 0000000..83340ad
--- /dev/null
+++ b/src/gstsdrjfmsrc.h
@@ -0,0 +1,55 @@
+/* GStreamer
+ * Copyright (C) Collabora Ltd. <info@collabora.com>
+ *
+ * gstsdrjfmsrc.h:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_SDRJFM_SRC_H__
+#define __GST_SDRJFM_SRC_H__
+
+#include <gst/gst.h>
+#include <gst/audio/gstaudiosrc.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_SDRJFM_SRC (gst_sdrjfm_src_get_type())
+#define GST_SDRJFM_SRC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SDRJFM_SRC,GstSdrjfmSrc))
+#define GST_SDRJFM_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SDRJFM_SRC,GstSdrjfmSrcClass))
+#define GST_IS_SDRJFM_SRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SDRJFM_SRC))
+#define GST_IS_SDRJFM_SRC_CLASS(klas) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SDRJFM_SRC))
+
+typedef struct _GstSdrjfmSrc GstSdrjfmSrc;
+typedef struct _GstSdrjfmSrcClass GstSdrjfmSrcClass;
+
+struct _GstSdrjfmSrc {
+ GstAudioSrc src;
+
+};
+
+struct _GstSdrjfmSrcClass {
+ GstAudioSrcClass parent_class;
+
+ gint frequency;
+
+};
+
+GType gst_sdrjfm_src_get_type(void);
+
+G_END_DECLS
+
+#endif /* __GST_SDRJFM_SRC_H__ */
diff --git a/tests/Makefile.am b/tests/Makefile.am
new file mode 100644
index 0000000..c6fca44
--- /dev/null
+++ b/tests/Makefile.am
@@ -0,0 +1,9 @@
+TESTS = tune.sh
+TESTS_ENVIRONMENT = GST_PLUGIN_PATH="$(top_builddir)/src/.libs"
+
+noinst_PROGRAMS = tune
+
+tune_SOURCES = tune.c
+tune_CFLAGS= $(GST_CFLAGS)
+tune_LDADD= $(GST_LIBS)
+
diff --git a/tests/tune.c b/tests/tune.c
new file mode 100644
index 0000000..93b8687
--- /dev/null
+++ b/tests/tune.c
@@ -0,0 +1,204 @@
+#include <glib.h>
+#include <gst/gst.h>
+
+GST_DEBUG_CATEGORY (srdjrm_debug);
+#define GST_CAT_DEFAULT srdjrm_debug
+
+#define MIN_FREQ 88100000
+#define MAX_FREQ 108100000
+
+typedef struct _TestData TestData;
+struct _TestData
+{
+ GstElement *pipeline;
+ GstElement *fmsrc;
+ void (*playing_cb) (TestData*);
+ void (*freq_changed_cb) (TestData*,gint);
+ gint timeout;
+ GMainLoop *loop;
+ gint freqs[10];
+ gint idx;
+ gint target_freq;
+};
+
+static gboolean
+bus_cb (GstBus *bus, GstMessage *message, gpointer user_data)
+{
+ TestData *data = user_data;
+ GError *error = NULL;
+
+ switch (message->type) {
+ case GST_MESSAGE_STATE_CHANGED:
+ if (GST_MESSAGE_SRC (message) == GST_OBJECT (data->pipeline)) {
+ GstState state;
+ gst_message_parse_state_changed (message, NULL, &state, NULL);
+ if (state == GST_STATE_PLAYING && data->playing_cb)
+ data->playing_cb (data);
+ }
+ break;
+
+ case GST_MESSAGE_ELEMENT:
+ if (GST_MESSAGE_SRC (message) == GST_OBJECT (data->fmsrc)) {
+ const GstStructure *s = gst_message_get_structure (message);
+
+ g_assert (gst_structure_has_name (s, "srdjrmsrc-frequency-changed"));
+ g_assert (gst_structure_has_field_typed (s, "frequency", G_TYPE_INT));
+
+ if (data->freq_changed_cb) {
+ gint freq;
+ gst_structure_get_int (s, "frequency", &freq);
+
+ g_assert_cmpint (freq, >=, MIN_FREQ);
+ g_assert_cmpint (freq, <=, MAX_FREQ);
+
+ data->freq_changed_cb (data, freq);
+ }
+ }
+ break;
+
+ case GST_MESSAGE_ERROR:
+ gst_message_parse_error (message, &error, NULL);
+ g_assert_no_error (error);
+ break;
+
+ case GST_MESSAGE_WARNING:
+ gst_message_parse_warning (message, &error, NULL);
+ g_assert_no_error (error);
+ break;
+
+ default:
+ break;
+ }
+
+ return TRUE;
+}
+
+static TestData *
+tearup (gint freq, void (*playing_cb) (TestData*),
+ void (*freq_changed_cb) (TestData*,gint))
+{
+ GError *error = NULL;
+ TestData *data = g_slice_new0 (TestData);
+ GstBus *bus;
+
+ data->pipeline =
+ gst_parse_launch ("srdjrmsrc name=fmsrc ! audioresample ! alsasink",
+ &error);
+ g_assert_no_error (error);
+ g_assert_nonnull (data->pipeline);
+
+ data->fmsrc = gst_bin_get_by_name (GST_BIN (data->pipeline), "fmsrc");
+ g_assert_nonnull (data->fmsrc);
+
+ g_object_set (data->fmsrc,
+ "frequency", freq,
+ NULL);
+
+ data->timeout = 20;
+ data->playing_cb = playing_cb;
+ data->freq_changed_cb = freq_changed_cb;
+
+ bus = gst_pipeline_get_bus (GST_PIPELINE (data->pipeline));
+ gst_bus_add_watch (bus, bus_cb, data);
+ g_object_unref (bus);
+
+ data->loop = g_main_loop_new (NULL, FALSE);
+
+ gst_element_set_state (data->pipeline, GST_STATE_PLAYING);
+
+ return data;
+}
+
+static void
+teardown (TestData *data)
+{
+ gst_element_set_state (data->pipeline, GST_STATE_NULL);
+ g_object_unref (data->fmsrc);
+ g_object_unref (data->pipeline);
+ g_main_loop_unref (data->loop);
+ g_slice_free (TestData, data);
+}
+
+static gboolean
+test_timed_out_cb (gpointer user_data)
+{
+ g_assert_false ("Test timed out");
+ return FALSE;
+}
+
+static void
+test_run (TestData *data)
+{
+ guint timeout;
+
+ timeout = g_timeout_add_seconds (data->timeout, test_timed_out_cb, data);
+ g_main_loop_run (data->loop);
+ g_source_remove (timeout);
+
+ teardown (data);
+}
+
+static void
+test_done (TestData *data)
+{
+ g_main_loop_quit (data->loop);
+}
+
+static void
+test_tune_playing_cb (TestData *data)
+{
+ data->freqs[0] = 96700000;
+ data->freqs[1] = 93300000;
+ data->freqs[2] = 105900000;
+ data->freqs[3] = 88900000;
+ data->freqs[4] = 0;
+ //data->freqs[1] = 107600000;
+ //data->freqs[5] = 107600000;
+ //data->freqs[6] = 0;
+
+ data->idx = 0;
+ data->target_freq = data->freqs[0];
+ g_object_set (data->fmsrc, "frequency", data->target_freq, NULL);
+
+ GST_DEBUG_OBJECT (data->fmsrc, "Set frequency to %d", data->target_freq);
+}
+
+static void
+test_tune_freq_changed_cb (TestData *data, gint frequency)
+{
+ g_assert_cmpint (frequency, ==, data->target_freq);
+
+ data->target_freq = data->freqs[++(data->idx)];
+
+ if (data->target_freq == 0)
+ {
+ GST_DEBUG_OBJECT (data->fmsrc, "Tune test completed");
+ test_done (data);
+ }
+ else
+ g_object_set (data->fmsrc, "frequency", data->target_freq, NULL);
+}
+
+static void
+test_tune ()
+{
+ GST_DEBUG ("Starting tune test");
+ TestData *data = tearup (96700000,
+ test_tune_playing_cb,
+ test_tune_freq_changed_cb);
+ test_run (data);
+}
+
+gint
+main (gint argc, gchar **argv)
+{
+ gst_init (&argc, &argv);
+
+ GST_DEBUG_CATEGORY_INIT (srdjrm_debug, "srdjrm", 0, "SDR-J FM plugin");
+ GST_DEBUG ("Running test");
+
+ g_test_init (&argc, &argv, NULL);
+ g_test_add_func ("/tune/live", test_tune);
+ g_test_run ();
+ return 0;
+}
diff --git a/tests/tune.sh b/tests/tune.sh
new file mode 100755
index 0000000..4f14315
--- /dev/null
+++ b/tests/tune.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+#exec ./tune --gst-debug=srdjrm:5 --gst-debug-level=5 --gst-debug-no-color
+exec ./tune --gst-debug=srdjrm:8 --gst-debug-no-color