/// <summary>
/// Pass the 'inStream' through exiftool and write the output to the 'outStream'.
/// </summary>
private void WriteTemporaryFile(Stream file, Stream input)
{
// get a buffer
var buffer = BufferCache.Get();
// read from the input stream
int count = input.Read(buffer, 0, Global.BufferSizeLocal);
// write the buffer to the file
file.Write(buffer, 0, count);
// reset the buffer
BufferCache.Set(buffer);
// is this the final buffer?
if (count < Global.BufferSizeLocal)
{
// yes, dispose of the file stream
file.Dispose();
var process = _coordinator.Process.TakeItem();
process.StandardInput.BaseStream.Write(_bytesRemoveMetadata, 0, _bytesRemoveMetadata.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();
// add this task to run with the coordinators process
_coordinator.Add(this);
}
else
{
// continue writing the temporary file
ManagerUpdate.Control.AddSingle(WriteTemporaryFile, file, input);
}
}
/// <summary>
/// Send the specified string to the client.
/// </summary>
public unsafe void Send(string str, HttpSendOptions options = null, IAction onSent = null)
{
Log.Info("Sending string '" + str + "' to client " + this + ".");
// is the string empty? skip
if (string.IsNullOrEmpty(str))
{
return;
}
_lock.Take();
// process send options
ProcessOptions(options);
_onSent = onSent;
var buffer = BufferCache.Get(str.Length + str.Length);
int count;
// get pointers to the string and the send byte buffer
fixed(char *src = str)
fixed(byte *dst = &buffer[0])
{
// get the bytes that the string represents
count = _encoder.GetBytes(src, str.Length, dst, buffer.Length, true);
}
SendBytes(buffer, 0, count);
BufferCache.Set(buffer);
}
/// <summary>
/// Creates a new AsyncSocket. You must call Start() after creating the AsyncSocket
/// in order to begin receive data.
/// </summary>
internal AsyncUdpSocket(Socket socket, IPEndPoint localEndpoint,
Action <IPEndPoint, byte[], int> onReceive, Action <Exception> onError)
{
Socket = socket;
OnReceive = onReceive;
OnError = onError;
LocalEndPoint = localEndpoint;
RemoteEndPoint = new IPEndPoint(IPAddress.Any, 0);
TargetEndPoint = RemoteEndPoint;
_sendLock = new Lock();
_readLock = new Lock();
_enqueueBuffer = new BufferQueue();
_sendQueue = new Shared <ArrayRig <QueuedBuffer> >(new ArrayRig <QueuedBuffer>());
_syncLock = new LockReadWrite();
_onReceive = new ActionSequence();
_receiveBuffer = BufferCache.Get();
_receivedChunks = new Dictionary <int, ChunkedGram>();
_disposing = false;
}
//----------------------------------//
/// <summary>
/// Get a byte collection of the specified string representation of a
/// hexidecimal number.
/// </summary>
public static byte[] ToBytes(this string str)
{
// is the string the correct length?
if (str.Length == 0 || str.Length % 2 != 0)
{
return(new byte[0]);
}
byte[] buffer = BufferCache.Get();
int length = str.Length / 2;
char c;
for (int bx = 0, sx = 0; bx < length; ++bx, ++sx)
{
// convert first half of byte
c = str[sx];
buffer[bx] = (byte)((c > Chars.n9 ? (c > Chars.Z ? (c - Chars.a + 10) : (c - Chars.A + 10)) : (c - Chars.n0)) << 4);
// convert second half of byte
c = str[++sx];
buffer[bx] |= (byte)(c > Chars.n9 ? (c > Chars.Z ? (c - Chars.a + 10) : (c - Chars.A + 10)) : (c - Chars.n0));
}
return(buffer);
}
/// <summary>
/// Allocate an event arg for a receive operation
/// </summary>
public static SocketAsyncEventArgs AllocateForReceive(EventHandler <SocketAsyncEventArgs> ioCompletedHandler)
{
SocketAsyncEventArgs result;
if (!_eventArgsReceive.Dequeue(out result))
{
result = new SocketAsyncEventArgs();
result.SetBuffer(BufferCache.Get(), 0, Global.BufferSizeLocal);
}
result.Completed += ioCompletedHandler;
return(result);
}
/// <summary>
/// Prepare the specified number of bytes. This ensures that at least the specified
/// number of bytes are sent to the 'Next' method each call.
/// </summary>
protected void BufferCount(int length)
{
if (length == 0)
{
_buffer = false;
}
else
{
_buffer = true;
_bufferTarget = length;
if (_bufferBytes == null || _bufferBytes.Length < _bufferTarget)
{
_bufferBytes = BufferCache.Get(length);
}
}
}
/// <summary>
/// Append the specified bytes to the next read.
/// </summary>
protected void Buffer(byte[] bytes, int offset, int length)
{
_buffer = true;
// does the buffer have room for the specified bytes?
if (length > _bufferTarget - _bufferIndex)
{
// no, resize the prepared byte array
_bufferBytes = BufferCache.Get(_bufferTarget + length);
}
// copy the byte buffer into the prepared collection
Micron.CopyMemory(bytes, offset, _bufferBytes, _bufferIndex, length);
// increment the index
_bufferIndex += length;
}
/// <summary>
/// Send the specified element to the client.
/// </summary>
public unsafe void Send(Element element, bool buildStyle = true, HttpSendOptions options = null, IAction onSent = null)
{
Log.Info("Sending element '" + element + "' to client " + this + ".");
if (buildStyle)
{
// build the style
var style = element.FindChild("style");
style.ContentString = element.BuildCss();
element.EncodeContent = false;
}
// build the element into a string
string str =
"<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.01//EN\" \"http://www.w3.org/TR/html4/strict.dtd\">" +
element.Build();
_lock.Take();
// have the options been specified? yes, process them
if (options == null || options.ContentType == null)
{
Headers[HttpResponseHeader.ContentType] = "text/html; charset=UTF-8";
}
ProcessOptions(options);
_onSent = onSent;
// resize buffer as required
var buffer = BufferCache.Get(str.Length + str.Length);
// get pointers to the string and the send byte buffer
int count;
fixed(char *src = str)
fixed(byte *dst = &buffer[0])
{
// get the bytes that the string represents
count = _encoder.GetBytes(src, str.Length, dst, buffer.Length, true);
}
// send the bytes
SendBytes(buffer, 0, count);
BufferCache.Set(buffer);
}
/// <summary>
/// Buffer processed data and send to the receive callback.
/// </summary>
private void ProcessReceivedData()
{
// get a buffer to dequeue into
var buffer = BufferCache.Get();
try {
// dequeue a buffer from the pending received data
int count = _receivedBuffer.TakeItem().Dequeue(buffer, 0, Global.BufferSizeLocal);
_receivedBuffer.Release();
if (count == 0)
{
// allocate the buffer cache once more
BufferCache.Set(buffer);
}
else
{
// remove
//Log.Debug(new string(System.Text.Encoding.UTF8.GetChars(buffer, 0, count)));
// run the callback action
_onReceive.AddRun(ActionSet.New(OnReceive, buffer, count));
if (count == Global.BufferSizeLocal)
{
ManagerUpdate.Control.AddSingle(ProcessReceivedData);
return;
}
}
// no bytes to receive
CompleteReceive();
} catch (SocketException ex) {
_readLock.Release();
BufferCache.Set(buffer);
if (ex.SocketErrorCode == SocketError.ConnectionReset)
{
return;
}
ProcessError(ex);
} catch (Exception ex) {
_readLock.Release();
BufferCache.Set(buffer);
ProcessError(ex);
}
}
/// <summary>
/// Send the specified string to the client.
/// </summary>
public unsafe void Send(string str, TransportOptions options = null, IAction onSent = null)
{
// is disposed?
if (_disposed)
{
Log.Warning("Cannot send from disposed connection.");
return;
}
// reset the timeout
if (_timeoutTimer != null)
{
_timeoutTimer.Reset(_timeoutMilliseconds);
}
// is the string empty? skip
if (string.IsNullOrEmpty(str))
{
return;
}
_lock.Take();
// process send options
ProcessOptions(options);
_onSent = onSent;
var buffer = BufferCache.Get(str.Length + str.Length);
int count;
// get pointers to the string and the send byte buffer
fixed(char *src = str)
fixed(byte *dst = &buffer[0])
{
// get the bytes that the string represents
count = _encoder.GetBytes(src, str.Length, dst, buffer.Length, true);
}
// send the byte buffer
SendBytes(buffer, 0, count);
// cache the buffer
BufferCache.Set(buffer);
}
/// <summary>
/// Send a buffer of bytes to the client. Releases the lock.
/// </summary>
protected void SendBytes(byte[] bytes, int offset, int count)
{
try {
// yes, does the buffer need to be compressed?
if (_header.Compression != DecompressionMethods.None)
{
// yes, compress the bytes
bytes = StreamHelper.Compress(_header.Compression,
System.IO.Compression.CompressionLevel.Optimal, bytes, offset, ref count);
offset = 0;
}
// are the bytes to be encrypted?
if (_header.EncryptionPassword != null)
{
// yes, encrypt them
byte[] buffer = BufferCache.Get(count);
Buffer.BlockCopy(bytes, offset, buffer, 0, count);
bytes = Crypto.EncryptWithPassword(buffer, _header.EncryptionPassword);
// send headers with the content length
EnqueueHeader(bytes.Length);
// send the bytes
AsyncSocket.Enqueue(bytes, 0, bytes.Length);
AsyncSocket.Send(_onSent);
}
else
{
// send headers with the content length
EnqueueHeader(count);
// send the bytes
AsyncSocket.Enqueue(bytes, offset, count);
AsyncSocket.Send(_onSent);
}
} finally {
_onSent = null;
_lock.Release();
}
}
/// <summary>
/// Initialize a file extractor with a collection of file paths, the extraction instance and the
/// encoding of the file.
/// </summary>
public FileExtractor(ArrayRig <string> files, Extract extractor = null, Encoding encoding = null)
{
_files = new Queue <string>();
// add the files to the queue
foreach (string file in files)
{
_files.Enqueue(file);
}
// persist the extractor
Extractor = extractor;
Decoder = (encoding ?? Encoding.UTF8).GetDecoder();
// initialize the buffers
_buffer = BufferCache.Get();
_chars = new char[(encoding ?? Encoding.UTF8).GetMaxCharCount(Global.BufferSizeLocal)];
_timeout = new Timer(Timeout, Run, false);
_lock = new Lock();
}
/// <summary>
/// Pass the 'inStream' through exiftool and write the output to the 'outStream'.
/// </summary>
private void ReadTemporaryFile(Stream file)
{
// get a buffer
byte[] buffer = BufferCache.Get();
// read from the stream
int count = file.Read(buffer, 0, Global.BufferSizeLocal);
// write the buffer to the output stream
Output.Write(buffer, 0, count);
// is this the final buffer?
if (count < Global.BufferSizeLocal)
{
// yes, dispose of the file stream
file.Dispose();
// reset the buffer
BufferCache.Set(buffer);
Success = true;
// run callback
OnComplete.Run();
// should the file be removed?
if (_removeTempFile)
{
ManagerResources.RemoveFile(Path);
}
}
else
{
// no, reset the buffer
BufferCache.Set(buffer);
// add a task to clear the metadata
ManagerUpdate.Control.AddSingle(ReadTemporaryFile, file);
}
}
//----------------------------------//
/// <summary>
/// Initialize a new buffer queue.
/// </summary>
public BufferQueue()
{
_buffer = BufferCache.Get();
}
//-------------------------------------------//
/// <summary>
/// Start sending data to the socket. Make sure slimLock is entered in read mode before calling this,
/// and that disposing is not true. Ensure an error handler is implemented which forwards to ProcessError.
/// </summary>
private void StartSend()
{
if (_disposing)
{
_sendLock.Release();
return;
}
byte[] buffer = BufferCache.Get();
// iterate while there are more bytes to be sent
for (;;)
{
// get data without removing it from the buffer and set buffer on socket
int count;
_sendBuffer.Take();
if (_currentCallbackAction == null)
{
count = _sendBuffer.Item.Dequeue(buffer, 0, Global.BufferSizeLocal);
if (count == 0)
{
_sendLock.Release();
// more data to send? yes, take the lock and return positive
if (_sendBuffer.Item.Length > 0 && _sendLock.TryTake)
{
count = _sendBuffer.Item.Dequeue(buffer, 0, Global.BufferSizeLocal);
}
else
{
_sendBuffer.Release();
BufferCache.Set(buffer);
return;
}
}
}
else
{
_callbackLock.Take();
count = _sendBuffer.Item.Dequeue(buffer, 0, Global.BufferSizeLocal);
if (count == 0)
{
_sendLock.Release();
// more data to send? yes, take the lock and return positive
if (_sendBuffer.Item.Length > 0 && _sendLock.TryTake)
{
count = _sendBuffer.Item.Dequeue(buffer, 0, Global.BufferSizeLocal);
}
else
{
_sendBuffer.Release();
_callbackLock.Release();
BufferCache.Set(buffer);
return;
}
}
_currentCallbackIndex -= count;
_callbackLock.Release();
}
_sendBuffer.Release();
_sendSocketArgs.SetBuffer(buffer, 0, count);
if (_disposing)
{
_sendLock.Release();
return;
}
if (Socket.Connected)
{
// sendAsync returns true if the I/O operation is pending. An event will be raised upon completion.
// returns false if the I/O operation completed synchronously
if (Socket.SendAsync(_sendSocketArgs))
{
// an event is going to be raised to OnIOComplete_Send, so let's exit right now because we're done
return;
}
// send -- is there more data to send now? no, break iteration
if (!CompleteSend(_sendSocketArgs))
{
return;
}
}
else
{
_sendLock.Release();
BufferCache.Set(buffer);
if (_disposing)
{
return;
}
ProcessError("Socket was disconnected mid-send.");
return;
}
}
// in case loop is ever broken
//_syncLock.ExitReadLock();
}
/// <summary>
/// On socket data being received.
/// </summary>
private unsafe void OnReceiveSocketData(IAsyncResult ar)
{
int count = 0;
try {
// end the receive
count = Socket.EndReceiveFrom(ar, ref _receiveEndPoint);
} catch (Exception ex) {
// release the read lock
_syncLock.ReleaseRead();
ProcessError(ex);
return;
}
if (count > 0)
{
// is the received buffer chunked?
byte flag = _receiveBuffer[0];
if (flag < 60 || flag >= 188)
{
count -= ChunkHeaderSize;
int chunkId;
int chunkIndex;
int chunkCount;
// sanity check for correct number of bytes received
if (count < 0)
{
_syncLock.ReleaseRead();
ProcessError("Socket didn't receive enough data for chunked information.");
return;
}
// yes, read the chunk details
fixed(byte *intP = &_receiveBuffer[1])
{
chunkId = *(int *)intP;
}
fixed(byte *intP = &_receiveBuffer[5])
{
chunkIndex = *(int *)intP;
}
fixed(byte *intP = &_receiveBuffer[9])
{
chunkCount = *(int *)intP;
}
// sanity check for the chunk data being valid
if (chunkIndex >= chunkCount)
{
_syncLock.ReleaseRead();
ProcessError("Socket received invalid chunk index and count information.");
return;
}
// write
ChunkedGram chunkedGram;
if (_receivedChunks.TryGetValue(chunkId, out chunkedGram))
{
chunkedGram.Length += count;
chunkedGram.Chunks.Insert(Teple.New(count, _receiveBuffer), chunkIndex);
// have all chunks been added?
if (chunkedGram.Chunks.Count == chunkCount)
{
// yes, remove from the collection
_receivedChunks.Remove(chunkId);
// create a byte buffer for the entire message
byte[] result = new byte[chunkedGram.Length];
int index = 0;
foreach (var chunk in chunkedGram.Chunks)
{
int length = chunk.ArgA;
Micron.CopyMemory(chunk.ArgB, ChunkHeaderSize, result, index, length);
index += length;
}
// reference the endpoint from which the data was received
IPEndPoint endpoint = (IPEndPoint)_receiveEndPoint;
// run the callback
_onReceive.AddRun(ActionSet.New(OnReceive,
endpoint,
result,
chunkedGram.Length));
}
else
{
// no, create a new receive buffer
_receiveBuffer = BufferCache.Get();
}
}
else
{
chunkedGram = new ChunkedGram {
Chunks = new ArrayRig <Teple <int, byte[]> >(chunkCount),
Timestamp = Time.Timestamp
};
_receivedChunks.Add(chunkId, chunkedGram);
chunkedGram.Chunks.Add(Teple.New(count, _receiveBuffer));
chunkedGram.Length += count;
// create a new receive buffer
_receiveBuffer = BufferCache.Get();
}
}
else
{
// no, copy the received buffer
--count;
byte[] buffer = BufferCache.Get(count);
Micron.CopyMemory(_receiveBuffer, 1, buffer, 0, count);
// reference the endpoint from which the data was received
IPEndPoint endpoint = (IPEndPoint)_receiveEndPoint;
// run the callback
_onReceive.AddRun(ActionSet.New(OnReceive,
endpoint,
buffer,
count));
}
}
if (_receivedChunks.Count > 0)
{
// check for any chunked data timeouts
ArrayRig <int> toRemove = null;
foreach (var chunkedGram in _receivedChunks)
{
if (Time.Timestamp - chunkedGram.Value.Timestamp > ChunkedGramTimeout)
{
if (toRemove == null)
{
toRemove = new ArrayRig <int>();
}
toRemove.Add(chunkedGram.Key);
}
}
if (toRemove != null)
{
foreach (var chunkId in toRemove)
{
ChunkedGram chunked;
if (_receivedChunks.TryGetValue(chunkId, out chunked))
{
_receivedChunks.Remove(chunkId);
chunked.Chunks.Dispose();
}
}
}
}
// release the read lock
_syncLock.ReleaseRead();
// create the endpoint for receiving data
_receiveEndPoint = new IPEndPoint(RemoteEndPoint.Address, RemoteEndPoint.Port);
try {
// start receiving again
Socket.BeginReceiveFrom(_receiveBuffer, 0, Global.BufferSizeLocal, SocketFlags.None,
ref _receiveEndPoint, OnReceiveSocketData, null);
} catch (Exception ex) {
ProcessError(ex);
return;
}
}
//-------------------------------------------//
/// <summary>
/// Start sending data to the socket. Make sure slimLock is entered in read mode before calling this,
/// and that disposing is not true. Ensure an error handler is implemented which forwards to ProcessError.
/// </summary>
private void StartSend()
{
if (_disposing)
{
_sendLock.Release();
return;
}
// get a buffer used to send data
byte[] buffer = BufferCache.Get(MaxDatagramSize);
// iterate while there are more bytes to be sent
for (;;)
{
// get data without removing it from the buffer and set buffer on socket
int count = TryGetBuffer(buffer);
// any bytes in the buffer?
if (count == 0)
{
_sendLock.Release();
// more data to send? yes, take the lock and return positive
if (_enqueueBuffer.Length == 0 || !_sendLock.TryTake ||
(count = TryGetBuffer(buffer)) == 0)
{
BufferCache.Set(buffer);
return;
}
}
//Log.Debug("Sending buffer '"+count+"' : " + buffer.ToString(0, count, ','));
var args = new SocketAsyncEventArgs();
args.Completed += OnSocketSend;
args.SendPacketsFlags = TransmitFileOptions.UseSystemThread;
// set the remote endpoint of the data to be sent
args.RemoteEndPoint = TargetEndPoint;
// set the data
args.SetBuffer(buffer, 0, count);
if (_disposing)
{
_sendLock.Release();
args.Dispose();
return;
}
if (Socket.SendToAsync(args))
{
// an event is going to be raised to OnIOComplete_Send, so let's exit right now because we're done
return;
}
// send -- is there more data to send now? no, break iteration
if (!CompleteSend(args))
{
return;
}
}
// in case loop is ever broken
//_syncLock.ExitReadLock();
}
//----------------------------------//
protected Interpret()
{
_bufferCapacity = Global.BufferSizeLocal;
_bufferBytes = BufferCache.Get(_bufferCapacity);
}
/// <summary>
/// Run the medadata removal process.
/// </summary>
public void Run()
{
var stream = new ByteBuffer(new MemoryStream());
bool found = false;
if (_coordinator.Buffer != null)
{
while (_coordinator.BufferIndex < _coordinator.BufferCount)
{
var bit = _coordinator.Buffer[_coordinator.BufferIndex];
stream.Write(bit);
++_coordinator.BufferIndex;
if (_coordinator.ReadySearch.Next(bit))
{
found = true;
break;
}
}
if (_coordinator.BufferIndex == _coordinator.BufferCount)
{
_coordinator.Buffer = null;
}
}
if (!found)
{
// read the {ready} flag from the exiftool
var buffer = BufferCache.Get();
var process = _coordinator.Process.TakeItem();
int count = process.StandardOutput.BaseStream.Read(buffer, 0, Global.BufferSizeLocal);
// while there are bytes in the process standard output
while (count > 0)
{
int index = 0;
while (index < count)
{
// check the buffer for the {ready} flag
var bit = buffer[index];
stream.Write(bit);
++index;
if (_coordinator.ReadySearch.Next(bit))
{
// the flag has been found - are there bytes in the buffer?
if (index == count)
{
BufferCache.Set(buffer);
}
else
{
// yes, remember the buffer
_coordinator.Buffer = buffer;
_coordinator.BufferIndex = index;
_coordinator.BufferCount = count;
}
found = true;
break;
}
}
if (found)
{
break;
}
count = process.StandardOutput.BaseStream.Read(buffer, 0, Global.BufferSizeLocal);
}
_coordinator.Process.Release();
}
// should the file be removed?
if (_removeTempFile)
{
ManagerResources.RemoveFile(Path);
}
// reset the stream position
stream.Position = 0;
// create the metadata dictionary for the callback
Metadata = new Dictionary <MetaKey, string>();
// while there are more bytes to read
while (stream.Position < stream.WriteEnd)
{
string key;
try {
// read the key of the key value pair
key = stream.ReadString(Chars.Colon);
} catch {
// ignore and break
break;
}
// trim the key
key = key.TrimSpace();
// no, read the value of the key-value pair
var value = stream.ReadString(Chars.NewLine).TrimSpace();
if (string.IsNullOrEmpty(key) || string.IsNullOrEmpty(value))
{
Log.Debug("Missing metadata '" + key + "' : '" + value + "'.");
continue;
}
// parse the key and assign key-value pair
MetaKey metaKey;
if (MetaKeys.Map.TryGetValue(key, out metaKey))
{
// determine how to parse the metadata value
switch (metaKey)
{
case MetaKey.FileSize:
{
// determine the scale of the file size
var splitFileSize = value.Split(value.IndexOf(Chars.Space));
switch (splitFileSize.ArgB)
{
case "bytes":
Metadata[metaKey] = splitFileSize.ArgA;
break;
case "MB":
Metadata[metaKey] = ((int)(splitFileSize.ArgA.ToDouble() * Global.Megabyte)).ToString();
break;
case "kB":
Metadata[metaKey] = ((int)(splitFileSize.ArgA.ToDouble() * Global.Kilobyte)).ToString();
break;
case "GB":
Metadata[metaKey] = ((int)(splitFileSize.ArgA.ToDouble() * Global.Gigabyte)).ToString();
break;
default:
Log.Error("Unknown file size scale of media '" + value + "'.");
break;
}
}
break;
case MetaKey.Duration:
{
// check for (approx) suffix
int index = value.IndexOf(Chars.Space);
if (index != -1)
{
value = value.Substring(0, index);
}
var splitDuration = value.Split(Chars.Colon);
// determine the type of duration
if (splitDuration.Length == 1)
{
Metadata[metaKey] = ((int)(splitDuration[0].ToDouble() * 1000)).ToString();
}
else
{
// parse each component
int time = splitDuration[0].ToInt32() * 60 * 60 * 1000;
time += splitDuration[1].ToInt32() * 60 * 1000;
time += splitDuration[2].ToInt32() * 1000;
// assign the time value
Metadata[metaKey] = time.ToString();
}
}
break;
case MetaKey.Bitrate:
{
// determine the scale of the file size
var splitBitrate = value.Split(value.IndexOf(Chars.Space));
switch (splitBitrate.ArgB)
{
case "bps":
Metadata[metaKey] = splitBitrate.ArgA;
break;
case "kbps":
Metadata[metaKey] = ((int)(splitBitrate.ArgA.ToDouble() * Global.Kilobyte)).ToString();
break;
case "Mbps":
Metadata[metaKey] = ((int)(splitBitrate.ArgA.ToDouble() * Global.Megabyte)).ToString();
break;
default:
Log.Warning("Unknown bitrate scale of media '" + value + "'.");
break;
}
}
break;
default:
// assign the mime type directly
Metadata[metaKey] = value;
break;
}
}
else
{
Log.Warning("Unrecognized metadata key '" + key + " : " + value + "'.");
}
}
// dispose of the byte stream
stream.Close();
// run callback
OnComplete.Run();
}
/// <summary>
/// Run the medadata removal process.
/// </summary>
public void Run()
{
bool found = false;
if (_coordinator.Buffer != null)
{
while (_coordinator.BufferIndex < _coordinator.BufferCount)
{
if (_coordinator.ReadySearch.Next(_coordinator.Buffer[_coordinator.BufferIndex]))
{
++_coordinator.BufferIndex;
found = true;
break;
}
++_coordinator.BufferIndex;
}
if (_coordinator.BufferIndex == _coordinator.BufferCount)
{
_coordinator.Buffer = null;
}
}
if (!found)
{
// read the {ready} flag from the exiftool
var buffer = BufferCache.Get();
var process = _coordinator.Process.TakeItem();
int count = process.StandardOutput.BaseStream.Read(buffer, 0, Global.BufferSizeLocal);
// while there are bytes in the process standard output
while (count > 0)
{
int index = 0;
while (index < count)
{
// check the buffer for the {ready} flag
if (_coordinator.ReadySearch.Next(buffer[index]))
{
++index;
// are there bytes in the buffer?
if (index == count)
{
// no, persist the buffer
BufferCache.Set(buffer);
}
else
{
// yes, remember the buffer and position
_coordinator.Buffer = buffer;
_coordinator.BufferIndex = index;
_coordinator.BufferCount = count;
}
found = true;
break;
}
++index;
}
if (found)
{
break;
}
count = process.StandardOutput.BaseStream.Read(buffer, 0, Global.BufferSizeLocal);
}
_coordinator.Process.Release();
}
// should the file be read?
if (Output == null)
{
// no, run callback
OnComplete.Run();
// should the file be removed?
if (_removeTempFile)
{
ManagerResources.RemoveFile(Path);
}
return;
}
FileStream fileStream;
try {
fileStream = new FileStream(Path, FileMode.Open, FileAccess.Read, FileShare.Read);
} catch (IOException ex) {
// if the file is still being used
if (ex.HResult == -2147024864)
{
// try twice more
ManagerUpdate.Iterant.AddSingle(TryReadTemporaryFile, 0);
return;
}
throw;
}
// get a stream to the clean file
ManagerUpdate.Control.AddSingle(ReadTemporaryFile, fileStream);
}
