qtmm 2.0 compiling using Qt version 5.4.1 - necessary steps

[Tom Kuschel]

The program qtmm works flawlessly compiled on Arch Linux 64bit
on my Asus EeePC 1018P
g++ (GCC) 4.9.2 20150304 (prerelease), linux kernel 4.0.3-1-ARCH
% qmake --version
QMake version 3.0
Using Qt version 5.4.1 in /usr/lib

There are four necessary steps of changing source files due to get a binary compiled:

1. Add a line to the end of the Qt project file qtmm.pro :

QT += widgets

2. Change the include line at the beginning of

main.cpp :
FROM

#include <QtGui/QApplication>

TO

#include <QtWidgets/QApplication>

3. Change two lines in the file mainwindow.cpp because the class QAudioFormat changed the member channels setFrequency() and setChannels() are obsolete, instead use setSampleRate() and channelCount()

mainwindow.cpp :
FROM

 audioFormat.setFrequency(22050);
 audioFormat.setChannels(1);

TO

 audioFormat.setSampleRate(22050);
 audioFormat.setChannelCount(1);

4. Change both lines in the file

audiobuffer.cpp :

FROM

 const int sampleBytes = m_format.channels() * channelBytes;

TO

 const int sampleBytes = m_format.channelCount() * channelBytes;

AND FROM

 for(int j = 0; j < m_format.channels(); ++j) {

TO

 for(int j = 0; j < m_format.channelCount(); ++j) {

Compile sources in a terminal with:
qmake
make

73 Tom, oe1tkt

[Anonymous]