int FTSound::getNumberOfChannels(const QString &filePath){
WavFile* pfile = new WavFile(NULL);
if(!pfile->open(filePath))
return 0;
int nchan = pfile->fileFormat().channelCount();
delete pfile;
return nchan;
}
void FTSound::load(int channelid){
if(channelid>1)
throw QString("built-in WAV file reader: Can read only the first and unique channel of the file.");
m_fileaudioformat = QAudioFormat(); // Clear the format
// Create the file reader and read the format
WavFile* pfile = new WavFile(this);
if(!pfile->open(fileFullPath))
throw QString("built-in WAV file reader: Cannot open the file.");
m_fileaudioformat = pfile->fileFormat();
// Check if the format is currently supported
if(!m_fileaudioformat.isValid())
throw QString("built-in WAV file reader: Format is invalid.");
if(m_fileaudioformat.channelCount()>1)
throw QString("built-in WAV file reader: This audio file has multiple audio channel, whereas the built-in reader can read files with only a single channel. Please convert this file into a mono audio file before re-opening it.");
if(!((m_fileaudioformat.codec() == "audio/pcm") &&
m_fileaudioformat.sampleType() == QAudioFormat::SignedInt &&
m_fileaudioformat.sampleSize() == 16 &&
m_fileaudioformat.byteOrder() == QAudioFormat::LittleEndian))
throw QString("built-in WAV file reader: Supports only 16 bit signed LE mono format, whereas current format is "+formatToString(m_fileaudioformat));
setSamplingRate(m_fileaudioformat.sampleRate());
// Load the waveform data from the file
pfile->seek(pfile->headerLength());
QByteArray buffer;
qint64 toread = m_fileaudioformat.sampleSize()/8;
qint64 red;
buffer.resize(toread);
while((red = pfile->read(buffer.data(),toread))) {
if(red<toread)
throw QString("built-in WAV file reader: The data are corrupted");
// Decode the data for 16 bit signed LE mono format
const qint16 value = *reinterpret_cast<const qint16*>(buffer.constData());
wav.push_back(value/32767.0);
}
delete pfile;
}
bool AudioEngine::loadFile(const QString &fileName)
{
WavFile* sound = new WavFile();
if (!sound->open(fileName)) {
// TODO: Deal with failing to load Audio File
return false;
}
_currentSprite->addSound(sound);
/*QPixmap waveForm(1000, 1000);
waveForm.fill();
QPainter painter;
QPen black(Qt::black, 1);
painter.begin(&waveForm);
painter.setPen(black);
short* base = (short*) sound->getDataPointer();
for(int i = 0; i < sound->getDataSize()/2; i++)
{
float value = base[i] * 500 / 32768;
painter.drawLine(i, 500, i, 500+value);
}
QLabel* label = new QLabel(0, Qt::Window);
label->setPixmap(waveForm);
label->show();
QAudioFormat format;
format.setSampleRate(sound->_wavHeader._samplesPerSec);
format.setChannelCount(sound->_wavHeader._numOfChan);
format.setSampleSize(sound->_wavHeader._bitsPerSample);
format.setCodec("audio/pcm");
format.setByteOrder(QAudioFormat::LittleEndian);
format.setSampleType(QAudioFormat::SignedInt);
QAudioOutput* audio = new QAudioOutput(format);
QBuffer buffer(sound->_dataBuffer);
audio->start(&buffer);*/
return true;
}