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Qt: API to write raw QAudioInput data to file just like ...
https://stackoverflow.com/questions/41348496/qt-api-to-write-raw-qaudioinput-data-to-file-just-like-qaudiorecorder
I'm trying to monitor an audio input and record the audio to a file but only when a level threshold is exceeded. There seems to be two main options for recording in Qt; QAudioRecorder and QAudioInput. Long story short: I'm trying to find the API that can take raw audio sample data read from QAudioInput and record it to a file just like QAudioRecorder does, but strangely it doesn't …
Creating/writing into a new file in Qt - Stack Overflow
https://stackoverflow.com/questions/4916193/creating-writing-into-a-new-file-in-qt
QString filename="Data.txt"; QFile file ( filename ); if ( file.open (QIODevice::ReadWrite) ) { QTextStream stream ( &file ); stream << "something" << endl; } If I create a text file called Data in the directory, it remains empty. If I don't create anything it doesn't create the file either.
Writing data into a text-file - Qt Forum
https://forum.qt.io/topic/79519/writing-data-into-a-text-file
my qt-program calculates data and I want to store them in a text-file. But the problem is, that the program overrides the same line every time. ... If you just open the file and write into it, you start writing at the beginning of the file. The easiest way, in this case, is to open the file with QIODevice::Append link. Reply Quote 2.
Writing raw data to a file using QFile - Qt Forum
https://forum.qt.io/topic/96160/writing-raw-data-to-a-file-using-qfile
template< class aType > qint64 write( QFile& file, aType var ) { qint64 toWrite = sizeof(decltype (var)); qint64 written = file.write(reinterpret_cast<const char*>(&var), toWrite); if (written != toWrite) { qDebug << "write error"; } qDebug << "out: " << written; return written; } template< class aType > qint64 read( QFile& file, aType &var ) { qint64 toRead = sizeof(decltype …
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