public long ReadAudioSamples(long nStart, int nAmount, IntPtr buf)
{
clip.ReadAudio(buf, nStart, nAmount);
return(nAmount);
}
private void encode()
{
try
{
using (AviSynthScriptEnvironment env = new AviSynthScriptEnvironment())
{
using (AviSynthClip a = env.ParseScript(_avisynthAudioScript))
{
if (0 == a.ChannelsCount)
{
throw new ApplicationException("Can't find audio stream");
}
_logBuilder.AppendFormat("Input: Channels={0}, BitsPerSample={1}, SampleRate={2}Hz{3}", a.ChannelsCount, a.BitsPerSample, a.AudioSampleRate, Environment.NewLine);
_start = DateTime.Now;
const int MAX_SAMPLES_PER_ONCE = 4096;
int frameSample = 0;
int lastUpdateSample = 0;
int frameBufferTotalSize = MAX_SAMPLES_PER_ONCE * a.ChannelsCount * a.BytesPerSample;
byte[] frameBuffer = new byte[frameBufferTotalSize];
createEncoderProcess(a);
try
{
using (Stream target = _encoderProcess.StandardInput.BaseStream)
{
// let's write WAV Header
if (_mustSendWavHeaderToEncoderStdIn)
{
writeHeader(target, a);
}
_sampleRate = a.AudioSampleRate;
raiseEvent("Preprocessing...");
bool hasStartedEncoding = false;
GCHandle h = GCHandle.Alloc(frameBuffer, GCHandleType.Pinned);
IntPtr address = h.AddrOfPinnedObject();
try
{
su.ClipLength = TimeSpan.FromSeconds((double)a.SamplesCount / (double)_sampleRate);
while (frameSample < a.SamplesCount)
{
_mre.WaitOne();
if (_encoderProcess != null)
{
if (_encoderProcess.HasExited)
{
throw new ApplicationException("Abnormal encoder termination " + _encoderProcess.ExitCode.ToString());
}
}
int nHowMany = Math.Min((int)(a.SamplesCount - frameSample), MAX_SAMPLES_PER_ONCE);
a.ReadAudio(address, frameSample, nHowMany);
_mre.WaitOne();
if (!hasStartedEncoding)
{
raiseEvent("Encoding audio...");
hasStartedEncoding = true;
}
target.Write(frameBuffer, 0, nHowMany * a.ChannelsCount * a.BytesPerSample);
target.Flush();
frameSample += nHowMany;
if (frameSample - lastUpdateSample > SAMPLES_PER_UPDATE)
{
setProgress((decimal)frameSample / (decimal)a.SamplesCount);
lastUpdateSample = frameSample;
}
Thread.Sleep(0);
}
}
finally
{
h.Free();
}
setProgress(1M);
if (_mustSendWavHeaderToEncoderStdIn && a.BytesPerSample % 2 == 1)
{
target.WriteByte(0);
}
}
raiseEvent("Finalizing encoder");
_encoderProcess.WaitForExit();
_readFromStdErrThread.Join();
_readFromStdOutThread.Join();
if (0 != _encoderProcess.ExitCode)
{
throw new ApplicationException("Abnormal encoder termination " + _encoderProcess.ExitCode.ToString());
}
}
finally
{
if (!_encoderProcess.HasExited)
{
_encoderProcess.Kill();
_encoderProcess.WaitForExit();
_readFromStdErrThread.Join();
_readFromStdOutThread.Join();
}
_readFromStdErrThread = null;
_readFromStdOutThread = null;
}
}
}
}
catch (Exception e)
{
deleteOutputFile();
if (e is ThreadAbortException)
{
_logBuilder.Append("ABORTING!\n");
su.WasAborted = true;
raiseEvent();
}
else
{
// Better Errors Exception for Audio Encoders
int encoder_path = _encoderExecutablePath.LastIndexOf(@"\");
string audio_encoder = _encoderExecutablePath.Substring(encoder_path + 1).ToLower();
_logBuilder.Append("\n");
_logBuilder.Append("\nError:\n");
if (audioJob.Settings is WinAmpAACSettings)
{
if (File.Exists(encoder_path + "enc_aacplus.dll") == false)
{
_logBuilder.Append("enc_aacplus.dll not found in the path...\n");
}
if (File.Exists(Environment.SystemDirectory + @"\nscrt.dll") == false)
{
_logBuilder.Append("nscrt.dll must be in your Windows System directory...\n");
}
}
su.HasError = true;
raiseEvent();
}
return;
}
finally
{
deleteTempFiles();
}
su.IsComplete = true;
raiseEvent();
}
public long ReadAudioSamples(long nStart, int nAmount, IntPtr buf)
{
clip.ReadAudio(buf, nStart, nAmount);
#warning Need to check whether nAmount samples are guaranteed to be returned
return(nAmount);
}
private void encode()
{
try
{
using (AviSynthScriptEnvironment env = new AviSynthScriptEnvironment())
{
using (AviSynthClip a = env.ParseScript(_avisynthAudioScript))
{
if (0 == a.ChannelsCount)
{
throw new ApplicationException("Can't find audio stream");
}
_logBuilder.AppendFormat("Channels={0}, BitsPerSample={1}, SampleRate={2}Hz{3}", a.ChannelsCount, a.BitsPerSample, a.AudioSampleRate, Environment.NewLine);
const int MAX_SAMPLES_PER_ONCE = 4096;
int frameSample = 0;
int frameBufferTotalSize = MAX_SAMPLES_PER_ONCE * a.ChannelsCount * a.BytesPerSample;
byte[] frameBuffer = new byte[frameBufferTotalSize];
createEncoderProcess(a);
try
{
using (Stream target = _encoderProcess.StandardInput.BaseStream)
{
// let's write WAV Header
if (_mustSendWavHeaderToEncoderStdIn)
{
writeHeader(target, a);
}
_sampleRate = a.AudioSampleRate;
raiseEvent("Preprocessing...");
GCHandle h = GCHandle.Alloc(frameBuffer, GCHandleType.Pinned);
IntPtr address = h.AddrOfPinnedObject();
try
{
while (frameSample < a.SamplesCount)
{
_mre.WaitOne();
if (_encoderProcess != null)
{
if (_encoderProcess.HasExited)
{
throw new ApplicationException("Abnormal encoder termination " + _encoderProcess.ExitCode.ToString());
}
}
int nHowMany = Math.Min((int)(a.SamplesCount - frameSample), MAX_SAMPLES_PER_ONCE);
a.ReadAudio(address, frameSample, nHowMany);
_mre.WaitOne();
setProgress(((100 * (double)frameSample) / a.SamplesCount), frameSample);
target.Write(frameBuffer, 0, nHowMany * a.ChannelsCount * a.BytesPerSample);
target.Flush();
frameSample += nHowMany;
Thread.Sleep(0);
}
}
finally
{
h.Free();
}
setProgress(100, frameSample);
if (_mustSendWavHeaderToEncoderStdIn && a.BytesPerSample % 2 == 1)
{
target.WriteByte(0);
}
}
raiseEvent("Finalizing encoder");
_encoderProcess.WaitForExit();
_readFromStdErrThread.Join();
_readFromStdOutThread.Join();
if (0 != _encoderProcess.ExitCode)
{
throw new ApplicationException("Abnormal encoder termination " + _encoderProcess.ExitCode.ToString());
}
}
finally
{
if (!_encoderProcess.HasExited)
{
_encoderProcess.Kill();
_encoderProcess.WaitForExit();
_readFromStdErrThread.Join();
_readFromStdOutThread.Join();
}
_readFromStdErrThread = null;
_readFromStdOutThread = null;
}
}
}
}
catch (Exception e)
{
deleteOutputFile();
if (e is ThreadAbortException)
{
_logBuilder.Append("ABORTING!\n");
StatusUpdate u = new StatusUpdate();
u.WasAborted = true;
raiseEvent(u);
}
else
{
_logBuilder.Append("Error:\n" + e.ToString());
StatusUpdate u = new StatusUpdate();
u.HasError = true;
u.Error = e.ToString();
raiseEvent(u);
}
return;
}
finally
{
deleteTempFiles();
}
StatusUpdate u2 = new StatusUpdate();
u2.IsComplete = true;
raiseEvent(u2);
}