/// <summary>
/// Remove metadata from the media found in the input stream.
/// </summary>
public MetaRemoval(MediaCoordinator coordinator, Stream input, Stream output, IAction <MetaRemoval> onComplete, bool removeTempFile = true)
{
_coordinator = coordinator;
_removeTempFile = removeTempFile;
// create a name for the media
Path = Fs.Combine(_coordinator.MediaPath, Guid.NewGuid().ToString());
Output = output;
OnComplete = onComplete;
OnComplete.ArgA = this;
try {
// open a stream to the file
FileStream file = new FileStream(Path, FileMode.Create, FileAccess.Write, FileShare.Read);
// copy the stream into a temporary file
WriteTemporaryFile(file, input);
} catch (IOException ex) {
// if the file is still being used
if (ex.HResult == -2147024864)
{
// try twice more
ManagerUpdate.Iterant.AddSingle(TryWriteTemporaryFile, input, 0);
return;
}
}
}
/// <summary>
/// Remove metadata from the media found in the input stream.
/// </summary>
public MetaRetrieval(MediaCoordinator coordinator, Stream input, IAction <MetaRetrieval> onComplete, bool removeTempFile = true)
{
_coordinator = coordinator;
_removeTempFile = removeTempFile;
// create a name for the media
Path = Fs.Combine(_coordinator.MediaPath, Guid.NewGuid().ToString());
OnComplete = onComplete;
OnComplete.ArgA = this;
// open a stream to the file
FileStream file = new FileStream(Path, FileMode.Create);
// add a task to copy the stream into a temporary file
// this then triggers the metadata retrieval
WriteTemporaryFile(file, input);
}
/// <summary>
/// Remove metadata from the media found in the input stream.
/// </summary>
public MetaRetrieval(MediaCoordinator coordinator, string path, IAction <MetaRetrieval> onComplete, bool removeFile = true)
{
_coordinator = coordinator;
_removeTempFile = removeFile;
// create a name for the media
Path = path;
OnComplete = onComplete;
OnComplete.ArgA = this;
var process = _coordinator.Process.TakeItem();
process.StandardInput.BaseStream.Write(_bytesGetMetadata, 0, _bytesGetMetadata.Length);
byte[] pathBytes = System.Text.Encoding.ASCII.GetBytes(Path);
process.StandardInput.BaseStream.Write(pathBytes, 0, pathBytes.Length);
process.StandardInput.BaseStream.Write(_coordinator.BytesExecute, 0, _coordinator.BytesExecute.Length);
process.StandardInput.BaseStream.Flush();
_coordinator.Process.Release();
_coordinator.Add(this);
}
