static void ShowFormat(WaveFile& wave, bool details = true)
{
cout
<< "Format: " << wave.GetFormatType()
<< (wave.IsCompressed()? " (compressed)" : " (PCM)") << endl
<< "Channels: " << wave.GetNumChannels() << endl
<< "Sample rate: " << wave.GetSampleRate() << endl
<< "Bytes per second: " << wave.GetBytesPerSecond() << endl
<< "Bytes per sample: " << wave.GetBytesPerSample() << endl
<< "Bits per channel: " << wave.GetBitsPerChannel() << endl
<< "Bytes: " << wave.GetDataLength() << endl
<< "Samples: " << wave.GetNumSamples() << endl
<< "Seconds: " << wave.GetNumSeconds() << endl;
if(wave.GetFile())
cout << "File pointer: " << ftell(wave.GetFile()) << endl;
else
cout << "File pointer: null" << endl;
if (details) {
string type, value;
if (wave.GetFirstExtraItem(type, value)) {
cout << "Extra data:" << endl;
do {
cout << " " << type << ": " << value << endl;
} while (wave.GetNextExtraItem(type, value));
}
wave.ResetToStart();
}
pause();
}
int main(int , char **)
{
WaveFile wf;
wf.SetupFormat();
if (!wf.OpenWrite("A440.wav")) {
cout << "Can't open for writing: " << wf.GetError();
return 1;
}
const dataLength = 1 /*sec*/ * wf.GetSampleRate(); // in samples
float alpha = 0;
for (int i = 0; i < dataLength; i++) {
wf.WriteSample(sin(alpha) / 2);
alpha += 2 * M_PI * frequency / wf.GetSampleRate();
}
return 0;
}
