/// <summary>Wavs the file extract.</summary>
/// <param name="InputFullFilename">The input full filename.</param>
/// <param name="OutputFullFilename">The output full filename.</param>
/// <param name="tStartTimeOffset">The t start time offset.</param>
/// <param name="tDuration">Duration of the t.</param>
/// <exception cref="Exception">
/// input file '" + InputFullFilename + "' was not created successfully
/// or
/// Start Time is greater than the Call Duration
/// or
/// output file '" + OutputFullFilename + "' was not created successfully
/// </exception>
public void WavFileExtract(string InputFullFilename, string OutputFullFilename, TimeSpan tStartTimeOffset, TimeSpan tDuration)
{
DateTime BeginTimeUTC = DateTime.UtcNow;
string arguments = string.Empty;
try
{
// Check Input file exists
if (System.IO.File.Exists(InputFullFilename) == false)
{
throw new Exception("input file '" + InputFullFilename + "' was not created successfully");
}
// Delete any pre-existing output file.
if (System.IO.File.Exists(OutputFullFilename) == true)
{
System.IO.File.SetAttributes(OutputFullFilename, System.IO.FileAttributes.Normal);
System.IO.File.Delete(OutputFullFilename);
}
var oHeader = new WavHeaderClass();
// Read the header of the input file. So we can check if it is in stereo format.
oHeader.Load(InputFullFilename);
// Check Call Duration
int iCallDurationMilliseconds = oHeader.GetDurationInMilliseconds();
// Check StartTime
if (tStartTimeOffset.TotalMilliseconds > iCallDurationMilliseconds)
{
throw new Exception("Start Time is greater than the Call Duration");
}
// Check Duration
if (tDuration.TotalMilliseconds > iCallDurationMilliseconds - tStartTimeOffset.TotalMilliseconds)
{
tDuration = TimeSpan.FromMilliseconds(iCallDurationMilliseconds - tStartTimeOffset.TotalMilliseconds);
}
// Setup arguments to create beep file
arguments = "\"" + InputFullFilename + "\" \"" + OutputFullFilename + "\" trim " + Convert.ToDecimal(tStartTimeOffset.TotalMilliseconds / 1000).ToString("######.000") + " " + Convert.ToDecimal(tDuration.TotalMilliseconds / 1000).ToString("######.000");
// Check if running in Docker Container
if (InDocker)
{
ShellHelper.ExecBashProcess("sox", arguments, _logger);
}
else
{
ShellHelper.ExecWindowsProcess(CURRENTAPPLICATIONPATH + @"\Executables\sox.exe", arguments);
}
// Throw an exception, if no output file was created.
if (System.IO.File.Exists(OutputFullFilename) == false)
{
throw new Exception("output file '" + OutputFullFilename + "' was not created successfully");
}
// The audio file was converted successfully.
_logger.LogInformation($"WavFileExtract .Converted file '" + InputFullFilename + "' to '" + OutputFullFilename + "' successfully. (" + (DateTime.UtcNow - BeginTimeUTC).TotalMilliseconds.ToString("###,##0") + " ms)");
return;
}
catch (Exception Ex)
{
_logger.LogInformation($"WavFileExtract Exception {Ex.Message}");
throw;
}
}
/// <summary>Redacts the audio.</summary>
/// <param name="InputFullFilename">The input full filename.</param>
/// <param name="OutputFullFilename">The output full filename.</param>
/// <param name="lStartTimeOffsetMilliseconds">The l start time offset milliseconds.</param>
/// <param name="lRedactionLengthMilliseconds">The l redaction length milliseconds.</param>
/// <exception cref="Exception">
/// input file '" + InputFullFilename + "' was not created successfully
/// or
/// Start Time Offset is greater than the Call Duration
/// or
/// output file '" + OutputFullFilename + "' was not created successfully
/// </exception>
public void RedactWavAudio(string InputFullFilename, string OutputFullFilename, long lStartTimeOffsetMilliseconds, long lRedactionLengthMilliseconds)
{
DateTime BeginTimeUTC = DateTime.UtcNow;
string arguments = string.Empty;
string sTempStartFile = Utilities.GetTempFilenameSafe(".wav");
string sTempEndFile = Utilities.GetTempFilenameSafe(".wav");
string sBeepFile = Utilities.GetTempFilenameSafe(".wav");
string sTempFinalLocalFileName = Utilities.GetTempFilenameSafe(".wav");
try
{
// Check Input file exists
if (System.IO.File.Exists(InputFullFilename) == false)
{
throw new Exception("input file '" + InputFullFilename + "' was not created successfully");
}
// Delete any pre-existing output file.
if (System.IO.File.Exists(OutputFullFilename) == true)
{
System.IO.File.SetAttributes(OutputFullFilename, System.IO.FileAttributes.Normal);
System.IO.File.Delete(OutputFullFilename);
}
//Convert incoming file to sample rate
this.WavConverter(InputFullFilename, sTempFinalLocalFileName, "wav", 8000, 16, 2);
// Check sTempFinalLocalFileName file exists
if (System.IO.File.Exists(sTempFinalLocalFileName) == false)
{
throw new Exception("sTempFinalLocalFileName file '" + sTempFinalLocalFileName + "' was not created successfully");
}
var oHeader = new WavHeaderClass();
// Read the header of the input file. So we can check if it is in stereo format.
oHeader.Load(sTempFinalLocalFileName);
// Check Call Duration
int iCallDurationMilliseconds = oHeader.GetDurationInMilliseconds();
// Add extra 10 milliseconds to redaction start offset to bring offset to the start of the next word
lStartTimeOffsetMilliseconds += 10;
// Check StartTimeOffset
if (lStartTimeOffsetMilliseconds > iCallDurationMilliseconds)
{
throw new Exception("Start Time Offset is greater than the Call Duration");
}
if (lStartTimeOffsetMilliseconds + lRedactionLengthMilliseconds > iCallDurationMilliseconds)
{
lRedactionLengthMilliseconds = iCallDurationMilliseconds - lStartTimeOffsetMilliseconds;
}
// Setup arguments to create beep file
arguments = " -r 8000 -c 2 -b 16 -n " + sBeepFile + " synth " + Convert.ToDecimal(lRedactionLengthMilliseconds / 1000.00).ToString("######.000") + " sine 270.0";
// Check if running in Docker Container
if (InDocker)
{
ShellHelper.ExecBashProcess("sox", arguments, _logger);
}
else
{
ShellHelper.ExecWindowsProcess(CURRENTAPPLICATIONPATH + @"\Executables\sox.exe", arguments);
}
// Throw an exception, if no output file was created.
if (System.IO.File.Exists(sBeepFile) == false)
{
throw new Exception("BeepFile file '" + sBeepFile + "' was not created successfully");
}
// Setup arguments to create start file
arguments = "\"" + sTempFinalLocalFileName + "\" \"" + sTempStartFile + "\" trim 0 " + Convert.ToDecimal(lStartTimeOffsetMilliseconds / 1000.00).ToString("######.000");
// Check if running in Docker Container
if (InDocker)
{
ShellHelper.ExecBashProcess("sox", arguments, _logger);
}
else
{
ShellHelper.ExecWindowsProcess(CURRENTAPPLICATIONPATH + @"\Executables\sox.exe", arguments);
}
// Setup arguments to create end file
arguments = "\"" + sTempFinalLocalFileName + "\" \"" + sTempEndFile + "\" trim " + Convert.ToDecimal(lStartTimeOffsetMilliseconds / (double)1000 + lRedactionLengthMilliseconds / (double)1000).ToString("######.000") + " =" + Convert.ToDecimal(iCallDurationMilliseconds / (double)1000).ToString("######.000");
// Check if running in Docker Container
if (InDocker)
{
ShellHelper.ExecBashProcess("sox", arguments, _logger);
}
else
{
ShellHelper.ExecWindowsProcess(CURRENTAPPLICATIONPATH + @"\Executables\sox.exe", arguments);
}
// Throw an exception, if no output file was created.
if (System.IO.File.Exists(sTempEndFile) == false)
{
throw new Exception("TempEndFile file '" + sTempEndFile + "' was not created successfully");
}
// Setup arguments to combine the 3 files
arguments = "\"" + sTempStartFile + "\" \"" + sBeepFile + "\" \"" + sTempEndFile + "\" \"" + OutputFullFilename + "\"";
// Check if running in Docker Container
if (InDocker)
{
ShellHelper.ExecBashProcess("sox", arguments, _logger);
}
else
{
ShellHelper.ExecWindowsProcess(CURRENTAPPLICATIONPATH + @"\Executables\sox.exe", arguments);
}
// Throw an exception, if no output file was created.
if (System.IO.File.Exists(OutputFullFilename) == false)
{
throw new Exception("output file '" + OutputFullFilename + "' was not created successfully");
}
// The audio file was converted successfully.
_logger.LogInformation($"RedactAudio .Converted file '" + InputFullFilename + "' to '" + OutputFullFilename + "' successfully. (" + (DateTime.UtcNow - BeginTimeUTC).TotalMilliseconds.ToString("###,##0") + " ms)");
return;
}
catch (Exception Ex)
{
_logger.LogInformation($"RedactAudio Exception {Ex.Message}");
throw;
}
finally
{
// Delete any temporary file.
if (sTempStartFile.Length > 0 && System.IO.File.Exists(sTempStartFile) == true)
{
try
{
System.IO.File.Delete(sTempStartFile);
}
catch (Exception ex)
{
// Ignore any error.
}
}
if (sTempEndFile.Length > 0 && System.IO.File.Exists(sTempEndFile) == true)
{
try
{
System.IO.File.Delete(sTempEndFile);
}
catch (Exception ex)
{
// Ignore any error.
}
}
if (sBeepFile.Length > 0 && System.IO.File.Exists(sBeepFile) == true)
{
try
{
System.IO.File.Delete(sBeepFile);
}
catch (Exception ex)
{
// Ignore any error.
}
}
if (sTempFinalLocalFileName.Length > 0 && System.IO.File.Exists(sTempFinalLocalFileName) == true)
{
try
{
System.IO.File.Delete(sTempFinalLocalFileName);
}
catch (Exception ex)
{
// Ignore any error.
}
}
}
}