Developers Documentation
- Git Repository
- README
- Dttsp
- A Very good video tutorial series on using QT and C++
- A Brief Description on the architecture of ghpsdr3
- Ghpsdr3 communication protocols 2010-08-07
- More on the Ghpsdr communications protocols (and more up to date)
- dspserver.conf The dspserver.conf file has it's own page
Most of the development discussion has been taking place on the sdr-widget google group.
Installing portaudio19-dev with jackd2
Portaudio19-dev depends on having a copy of libjack-dev installed and if the libkjack-jackd2-dev package is installed before portaudio19-dev it's dependency will be satisfied and it will not uninstall jackd2 and install jackd1 if you have already installed jackd2 on your system.
If jackd1 and portaudio19-dev already installed
From Synaptic Uninstall portaudio19-dev Uninstall jackd1 Install Jackd2 Install libjack-jackd2-dev Install portaudio19-dev
If you are starting from scratch
From Synaptic Install Jackd2 Install libjack-jackd2-dev Install portaudio19-dev
The following commands install all the environment needed (Debian/Ubuntu):
sudo apt-get install jackd2 libjack-jackd2-dev portaudio19-dev sudo apt-get install make gcc g++ autoconf automake autotools-dev libtool git subversion sudo apt-get install libusb-0.1-4 libusb-dev libfftw3-dev libpulse-dev libsamplerate0-dev sudo apt-get install libusb-1.0-0-dev libconfig8-dev xdg-utils libortp-dev sudo apt-get install libevent-dev
If the machine doesn't have an OpenGL aware accelerated video card, please install also the following packages:
sudo apt-get install mesa-utils sudo apt-get install mesa-common-dev sudo apt-get install libgl1-mesa-dev sudo apt-get install x11proto-xext-dev sudo apt-get install libxrender-dev
Note: in at least one case (thanks to Pierluigi iw4blg), even if the machine was running with an NVidia card and proprietary NVidia device drivers, the test for Qt in configure did fail, as well did the example programs enclosed in qt5 package, complaining that both GL/gl.h and libGL were missing. Installing all the above packages the problem was solved.
Installing codec2 low bit rate audio encoding and decoding
To download and build the codec2 library. See:
http://www.rowetel.com/blog/?page_id=452
Now go get codec2 using subversion
cd svn co https://freetel.svn.sourceforge.net/svnroot/freetel/codec2-dev cd codec2-dev autoreconf -i ./configure make sudo make install sudo ldconfig
Installing Qt5
http://qt-project.org/downloads
U should download the Qt5.0.0 libraries file. 64 bit for x86_64 and 32 bit for x86 PC etc.
After downloading you go to the download directory and do:
$ chmod +x the-name-of-the-downloaded-file
$ sudo ./the-name-of-the-downloaded-file
After that you should have something installed in /opt/Qt5.0.0
Setting the path to qt5
From a terminal
$ export PATH=/opt/Qt5.0.0/5.0.0/gcc_64/bin:/opt/Qt5.0.0/Tools/QtCreator/bin:$PATH
This is due because the several packages from Qt sources and binary repositories web sites are not really installed in the system but simply copied on it. Therefore the autotools build system should search virtually over the whole filesystem.
In any case please remember that
- the export above is effective only into the current terminal windows, if you open another window and/or reboot the system, you have to resubmit again the command
- if you want to make permanent it, you have to add the export into the right configuration shell, suitable for the shell that you are currently using.
For the bash it is typically ~/.bashrc
In any case, after you issue the export, please test it.
qmake -v QMake version 2.01a Using Qt version 4.8.0 in /home/andrew/QtSDK4.8x/Desktop/Qt/4.8.0/gcc/lib
Compiling QtRadio
cd git clone https://github.com/alexlee188/ghpsdr3-alex.git cd ghpsdr3-alex git checkout master sh ./cleanup.sh autoreconf -i sh ./alex-conf.sh
Last, build everything:
make sudo make install
Setting QtCreator to use the qt5 libraries
If you want to use Qt Creator (you use the same Qt Creator as with Qt4), you need to configure it to use Qt5 as one of the options:
From the top line menu of QtCreator ... Tools > Options > Build & Run Click on the Qt Versions panel Click on Add button Navigate to /opt/Qt5.0.0/5.0.0/gcc_64/bin Click on qmake Click on open Click on Apply then OK
You need to point to the qmake file which is found in /opt/Qt5.0.0/5.0.0/gcc_64/bin
Choosing the build library in QtCreator
you need to (re)import your QtRadio project and then you will be able to select Qt5 (or the previous Qt4.8 etc.) for building the application.
It may be necessary to edit the project file (QtRadio.pro) to choose which version of Qt Creator you are using which can be the SDK directly from Nokia, or the Ubuntu install of Creator. The line "_UsingSDK" needs to be set to true or false as appropriate.
Qt5.0.0 bug
There is likely to be a bug in the Qt5.0.0 release that leads to QtRadio hangs when you click on the menu after running QtRadio for a while when a buffer underun has occured.
This happens only one some PC's, but not others.
If it does, you can revert to and older Qt5 BETA:
On my one of 3 PC's with the QtRadio lockup problem (when you click on any menu items after running QtRadio for a while, especially after a buffer underflow), I rebuild QtRadio using Qt5 from the Edgers ppa (which is a late BETA version), and the problem disappears completely :-)
https://launchpad.net/~canonical-qt5-edgers/+archive/qt5-daily
To get it to build in the Edgers, you just have to set the path to the Edgers directory. E.g. in mine, it is:
$ export PATH=/opt/qt5/bin:$PATH
and also to use symbolic link for the libQt5Multmedia lib to get:
alex@alex-desktop:/opt/qt5/lib$ ls -l libQt5Multimedia.* lrwxrwxrwx 1 root root 24 Jan 10 19:04 libQt5Multimedia.so -> libQtMultimedia.so.5.0.0 lrwxrwxrwx 1 root root 24 Jan 10 19:05 libQt5Multimedia.so.5 -> libQtMultimedia.so.5.0.0 lrwxrwxrwx 1 root root 24 Jan 10 19:05 libQt5Multimedia.so.5.0 -> libQtMultimedia.so.5.0.0
The commands to do so (which you have to do only once) are:
$ cd /opt/qt5/lib $ sudo ln -s libQtMultimedia.so.5.0.0 libQt5Multimedia.so $ sudo ln -s libQtMultimedia.so.5.0.0 libQt5Multimedia.so.5 $ sudo ln -s libQtMultimedia.so.5.0.0 libQt5Multimedia.so.5.0then you should be able to do the usual build steps.
