public void Close()
{
Closed = true;
try
{
if (!FfmpegProcess.HasExitedSafe())
{
FfmpegProcess.Kill();
}
}
catch { }
try { FfmpegProcess.CancelErrorRead(); } catch { }
try { FfmpegProcess.StandardInput.Dispose(); } catch { }
try { FfmpegProcess.StandardOutput.Dispose(); } catch { }
try { FfmpegProcess.Dispose(); } catch { }
IcyStream?.Dispose();
}
public void ReadStreamLoop(Id id)
{
if (IcyStream is null)
{
throw new InvalidOperationException("Instance is not an icy stream");
}
Tools.SetLogId(id.ToString());
const int IcyMaxMeta = 255 * 16;
const int ReadBufferSize = 4096;
int errorCount = 0;
var buffer = new byte[Math.Max(ReadBufferSize, IcyMaxMeta)];
int readCount = 0;
while (!Closed)
{
try
{
while (readCount < IcyMetaInt)
{
int read = IcyStream.Read(buffer, 0, Math.Min(ReadBufferSize, IcyMetaInt - readCount));
if (read == 0)
{
Close();
return;
}
readCount += read;
FfmpegProcess.StandardInput.BaseStream.Write(buffer, 0, read);
errorCount = 0;
}
readCount = 0;
var metaByte = IcyStream.ReadByte();
if (metaByte < 0)
{
Close();
return;
}
if (metaByte > 0)
{
metaByte *= 16;
while (readCount < metaByte)
{
int read = IcyStream.Read(buffer, 0, metaByte - readCount);
if (read == 0)
{
Close();
return;
}
readCount += read;
}
readCount = 0;
var metaString = Tools.Utf8Encoder.GetString(buffer, 0, metaByte).TrimEnd('\0');
Log.Debug("Meta: {0}", metaString);
OnMetaUpdated?.Invoke(ParseIcyMeta(metaString));
}
}
catch (Exception ex)
{
errorCount++;
if (errorCount >= 50)
{
Log.Error(ex, "Failed too many times trying to access ffmpeg. Closing stream.");
Close();
return;
}
if (ex is InvalidOperationException)
{
Log.Debug(ex, "Waiting for ffmpeg");
Thread.Sleep(100);
}
else
{
Log.Debug(ex, "Stream read/write error");
}
}
}
}
