/********************************************************
* Takes in a Wav object and string depicting the file path.
* A binary writer is used to write the wav file to the disk.
* THe header file is written first, and then sample data
* portion of the wav object.
**********************************************************/
public static void writeFile(Wav file, string filePath)
{
FileStream fileStream = new FileStream(filePath, FileMode.Create);
BinaryWriter writer = new BinaryWriter(fileStream);
//Write the header
writer.Write(file.head.chunkID);
writer.Write(file.head.fileSize);
writer.Write(file.head.riffType);
//Write the format chunk
writer.Write(file.head.fmtID);
writer.Write(file.head.fmtSize);
writer.Write(file.head.fmtCode);
writer.Write(file.head.channels);
writer.Write(file.head.sampleRate);
writer.Write(file.head.fmtAvgBPS);
writer.Write(file.head.fmtBlockAlign);
writer.Write(file.head.bitDepth);
//Write the data chunk
writer.Write(System.Text.Encoding.ASCII.GetBytes("data"));
writer.Write(file.head.dataSize);
//Write the samples
writer.Write(file.getData());
//Close the writer and filestream
writer.Close();
fileStream.Close();
}
/*****************************************************************
* Default constructor. Initilizates a blank wav file, and creates
* the handler object. As well as initalize any UI components.
******************************************************************/
public GUI()
{
wav = new Wav();
handle = new Handler();
InitializeComponent();
setup_charts();
//Default to rectangle window
window_selection = 0;
this.UseWaitCursor = true;
toggle_wait_cursor();
}
/*****************************************************************
* Gets called when the user clicks the stop button. It sends the
* message to the win32 handle to stop recording and acquires the
* recorded samples. The buttons are then re-enabled and if data was
* recorded a new wav file is created and drawn to the chart. If no
* data was recorded an error message is displayed.
******************************************************************/
private void stopButton_Click(object sender, EventArgs e)
{
handle.recordData = handle.data_stop();
recordButton.Enabled = true;
stopButton.Enabled = false;
if (handle.recordData != null)
{
wav = new Wav(handle.recordData);
toggle_wait_cursor();
drawChart(wav.dataToDouble());
toggle_wait_cursor();
playButton.Enabled = true;
}
else
{
MessageBox.Show("No data was recorded", "Recording error",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}