/*
* Adds a waveform group for a Wav file to a Dataset
*/
private bool InsertWaveStream(ref DicomDataSet InDS, string strInputWaveFileName)
{
DicomWaveformGroup AudioWaveformGroup = new DicomWaveformGroup();
int nNumberOfChannels = 0;
// Load an audio file into the waveform group
try
{
AudioWaveformGroup.LoadAudio(strInputWaveFileName);
}
catch (Exception ex)
{
MessageBox.Show("Couldn't insert the wave stream into the dataset.\r\n\r\n" + ex.ToString());
return(false);
}
// Verify that hte frequency is 8K
int nSamplingFrequency = (int)AudioWaveformGroup.GetSamplingFrequency();
if (nSamplingFrequency != 8000)
{
MessageBox.Show("The samples per second (sampling rate) for the wave file should be 8KHz.");
return(false);
}
// Set the channel source
nNumberOfChannels = AudioWaveformGroup.ChannelCount;
if (nNumberOfChannels > 0)
{
DicomWaveformChannel channel = null;
DicomCodeSequenceItem DicomSourceSequenceItem = new DicomCodeSequenceItem();
DicomSourceSequenceItem.CodeMeaning = "Dictation";
DicomSourceSequenceItem.CodeValue = "110011";
DicomSourceSequenceItem.CodingSchemeDesignator = "DCM";
DicomSourceSequenceItem.CodingSchemeVersion = "01";
for (int nIndex = 0; nIndex < nNumberOfChannels; nIndex++)
{
channel = AudioWaveformGroup.GetChannel(nIndex);
if (channel != null)
{
try
{
channel.SetChannelSource(DicomSourceSequenceItem);
}
catch (Exception ex)
{
MessageBox.Show("Couldn't set the channel source\r\n\r\n" + ex.ToString());
return(false);
}
}
}
}
// Insert the waveform group into the dataset
try
{
InDS.AddWaveformGroup(AudioWaveformGroup, 0);
}
catch (Exception ex)
{
MessageBox.Show("Couldn't insert the wave stream into the dataset.\r\n\r\n" + ex.ToString());
return(false);
}
return(true);
}
