/// <summary>
/// Transmit an infrared command.
/// </summary>
/// <param name="port">Port to transmit on.</param>
/// <param name="data">Data to transmit.</param>
/// <returns><c>true</c> if successful, otherwise <c>false</c>.</returns>
public bool Transmit(string port, byte[] data)
{
BlasterPort blasterPort = BlasterPort.Both;
try
{
blasterPort = (BlasterPort)Enum.Parse(typeof(BlasterPort), port, true);
}
catch
{
#if TRACE
Trace.WriteLine(String.Format("Invalid Blaster Port ({0}), using default ({1})", port, blasterPort));
#endif
}
IrCode code = IrCode.FromByteArray(data);
if (code == null)
{
throw new ArgumentException("Invalid IR Command data", "data");
}
_driver.Send(code, (int)blasterPort);
return(true);
}
/// <summary>
/// Converts an IrCode into raw data for the device.
/// </summary>
/// <param name="code">IrCode to convert.</param>
/// <returns>Raw device data.</returns>
private static byte[] DataPacket(IrCode code)
{
DebugWriteLine("DataPacket()");
if (code.TimingData.Length == 0)
{
return(null);
}
// Construct data bytes into "packet" ...
List <byte> packet = new List <byte>();
for (int index = 0; index < code.TimingData.Length; index++)
{
double time = code.TimingData[index];
byte duration = (byte)Math.Abs(Math.Round(time / TimingResolution));
bool pulse = (time > 0);
DebugWrite("{0}{1}, ", pulse ? '+' : '-', duration * TimingResolution);
while (duration > 0x7F)
{
packet.Add((byte)(pulse ? 0xFF : 0x7F));
duration -= 0x7F;
}
packet.Add((byte)(pulse ? 0x80 | duration : duration));
}
DebugWriteNewLine();
// Insert byte count markers into packet data bytes ...
int subpackets = (int)Math.Ceiling(packet.Count / (double)4);
byte[] output = new byte[packet.Count + subpackets + 1];
int outputPos = 0;
for (int packetPos = 0; packetPos < packet.Count;)
{
byte copyCount = (byte)(packet.Count - packetPos < 4 ? packet.Count - packetPos : 0x04);
output[outputPos++] = (byte)(0x80 | copyCount);
for (int index = 0; index < copyCount; index++)
{
output[outputPos++] = packet[packetPos++];
}
}
output[outputPos] = 0x80;
return(output);
}
/// <summary>
/// Learn an IR Command.
/// </summary>
/// <param name="learnTimeout">How long to wait before aborting learn.</param>
/// <param name="learned">Newly learned IR Command.</param>
/// <returns>Learn status.</returns>
public override LearnStatus Learn(int learnTimeout, out IrCode learned)
{
DebugWriteLine("Learn()");
learned = null;
_learningCode = new IrCode();
SetInputPort(InputPort.Learning);
int learnStartTick = Environment.TickCount;
_readThreadMode = ReadThreadMode.Learning;
// Wait for the learning to finish ...
while (_readThreadMode == ReadThreadMode.Learning && Environment.TickCount < learnStartTick + learnTimeout)
{
Thread.Sleep(PacketTimeout);
}
DebugWriteLine("End Learn");
ReadThreadMode modeWas = _readThreadMode;
_readThreadMode = ReadThreadMode.Receiving;
SetInputPort(InputPort.Receive);
LearnStatus status = LearnStatus.Failure;
switch (modeWas)
{
case ReadThreadMode.Learning:
status = LearnStatus.Timeout;
break;
case ReadThreadMode.LearningFailed:
status = LearnStatus.Failure;
break;
case ReadThreadMode.LearningDone:
DebugDump(_learningCode.TimingData);
if (_learningCode.FinalizeData())
{
learned = _learningCode;
status = LearnStatus.Success;
}
break;
}
_learningCode = null;
return(status);
}
/*
* public static ushort[] ConvertIrCodeToPronto(IrCode irCode)
* {
* CodeType codeType;
* Int64 value;
*
* if (Decode(irCode, out codeType, out value))
* return EncodePronto(codeType, value);
* else
* return null;
* }
*/
/// <summary>
/// Converts the ir code into Pronto raw format.
/// </summary>
/// <param name="irCode">The ir code to convert.</param>
/// <returns>Pronto data (raw format).</returns>
public static ushort[] ConvertIrCodeToProntoRaw(IrCode irCode)
{
List <ushort> prontoData = new List <ushort>();
double carrier;
ushort prontoCarrier;
CodeType codeType;
int irCodeCarrier = IrCode.CarrierFrequencyDefault;
switch (irCode.Carrier)
{
case IrCode.CarrierFrequencyDCMode:
codeType = CodeType.RawUnmodulated;
irCodeCarrier = IrCode.CarrierFrequencyDefault;
break;
case IrCode.CarrierFrequencyUnknown:
codeType = CodeType.RawOscillated;
irCodeCarrier = IrCode.CarrierFrequencyDefault;
break;
default:
codeType = CodeType.RawOscillated;
irCodeCarrier = irCode.Carrier;
break;
}
prontoCarrier = ConvertToProntoCarrier(irCodeCarrier);
carrier = prontoCarrier * ProntoClock;
for (int index = 0; index < irCode.TimingData.Length; index++)
{
int duration = Math.Abs(irCode.TimingData[index]);
prontoData.Add((ushort)Math.Round(duration / carrier));
}
if (prontoData.Count % 2 != 0)
{
prontoData.Add(SignalFree);
}
ushort burstPairs = (ushort)(prontoData.Count / 2);
prontoData.Insert(0, (ushort)codeType); // Pronto Code Type
prontoData.Insert(1, prontoCarrier); // IR Frequency
prontoData.Insert(2, burstPairs); // First Burst Pairs
prontoData.Insert(3, 0x0000); // Repeat Burst Pairs
return(prontoData.ToArray());
}
/// <summary>
/// Determines the pulse count and total time of the supplied IrCode.
/// This is used to determine the carrier frequency.
/// </summary>
/// <param name="code">The IrCode to analyse.</param>
/// <param name="pulseTime">The total ammount of pulse time.</param>
/// <param name="pulseCount">The total count of pulses.</param>
private static void GetIrCodeLengths(IrCode code, out int pulseTime, out int pulseCount)
{
pulseTime = 0;
pulseCount = 0;
foreach (int time in code.TimingData)
{
if (time > 0)
{
pulseTime += time;
pulseCount++;
}
}
}
/// <summary>
/// Creates an IrCode object from Pronto format file bytes.
/// </summary>
/// <param name="data">IR file bytes.</param>
/// <returns>New IrCode object.</returns>
private static IrCode FromProntoData(byte[] data)
{
string code = Encoding.ASCII.GetString(data);
string[] stringData = code.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
ushort[] prontoData = new ushort[stringData.Length];
for (int i = 0; i < stringData.Length; i++)
{
prontoData[i] = ushort.Parse(stringData[i], NumberStyles.HexNumber);
}
IrCode newCode = Pronto.ConvertProntoDataToIrCode(prontoData);
if (newCode != null)
{
newCode.FinalizeData();
}
// Seems some old files have excessively long delays in them .. this might fix that problem ...
return(newCode);
}
/// <summary>
/// Creates an IrCode object from old IR file bytes.
/// </summary>
/// <param name="data">IR file bytes.</param>
/// <returns>New IrCode object.</returns>
private static IrCode FromOldData(byte[] data)
{
List <int> timingData = new List <int>();
int len = 0;
for (int index = 0; index < data.Length; index++)
{
byte curByte = data[index];
if ((curByte & 0x80) != 0)
{
len += (curByte & 0x7F);
}
else
{
len -= curByte;
}
if ((curByte & 0x7F) != 0x7F)
{
timingData.Add(len * 50);
len = 0;
}
}
if (len != 0)
{
timingData.Add(len * 50);
}
IrCode newCode = new IrCode(timingData.ToArray());
newCode.FinalizeData();
// Seems some old files have excessively long delays in them .. this might fix that problem ...
return(newCode);
}
/// <summary>
/// Send an IR Command.
/// </summary>
/// <param name="code">IR Command data to send.</param>
/// <param name="port">IR port to send to.</param>
public override void Send(IrCode code, int port)
{
DebugWrite("Send(): ");
DebugDump(code.TimingData);
// Reset device (hopefully this will stop the blaster from stalling)
//WriteSync(ResetPacket);
SetOutputPort(port);
SetCarrierFrequency(code.Carrier);
// Send packet
byte[] data = DataPacket(code);
// If the code would go longer than the allowable limit, truncate the code
if (data.Length > 341)
// 340 minus the overhead of 1 byte in 4 for header is 255 bytes of actual time code data, add one for a terminator byte
{
Array.Resize(ref data, 341); // Shrink the array to fit
data[340] = 0x80; // Set the terminator byte
}
WriteSync(data);
}
/// <summary>
/// Device read thread method.
/// </summary>
private void ReadThread()
{
byte[] packetBytes;
WaitHandle waitHandle = new ManualResetEvent(false);
SafeHandle safeWaitHandle = waitHandle.SafeWaitHandle;
WaitHandle[] waitHandles = new WaitHandle[] { waitHandle, _stopReadThread };
IntPtr deviceBufferPtr = IntPtr.Zero;
bool success = false;
safeWaitHandle.DangerousAddRef(ref success);
if (!success)
{
throw new InvalidOperationException("Failed to initialize safe wait handle");
}
try
{
IntPtr dangerousWaitHandle = safeWaitHandle.DangerousGetHandle();
DeviceIoOverlapped overlapped = new DeviceIoOverlapped();
overlapped.ClearAndSetEvent(dangerousWaitHandle);
deviceBufferPtr = Marshal.AllocHGlobal(DeviceBufferSize);
while (_readThreadMode != ReadThreadMode.Stop)
{
int lastError;
int bytesRead;
bool readDevice = ReadFile(_readHandle, deviceBufferPtr, DeviceBufferSize, out bytesRead,
overlapped.Overlapped);
lastError = Marshal.GetLastWin32Error();
if (!readDevice)
{
if (lastError != ErrorSuccess && lastError != ErrorIoPending)
{
throw new Win32Exception(lastError);
}
while (true)
{
int handle = WaitHandle.WaitAny(waitHandles, 2 * PacketTimeout, false);
if (handle == ErrorWaitTimeout)
{
continue;
}
if (handle == 0)
{
break;
}
if (handle == 1)
{
throw new ThreadInterruptedException("Read thread stopping by request");
}
throw new InvalidOperationException(String.Format("Invalid wait handle return: {0}", handle));
}
bool getOverlapped = GetOverlappedResult(_readHandle, overlapped.Overlapped, out bytesRead, true);
lastError = Marshal.GetLastWin32Error();
if (!getOverlapped && lastError != ErrorSuccess)
{
throw new Win32Exception(lastError);
}
}
if (bytesRead == 0)
{
continue;
}
packetBytes = new byte[bytesRead];
Marshal.Copy(deviceBufferPtr, packetBytes, 0, bytesRead);
DebugWrite("Received bytes ({0}): ", bytesRead);
DebugDump(packetBytes);
int[] timingData = null;
if (_decodeCarry != 0 || packetBytes[0] >= 0x81 && packetBytes[0] <= 0x9E)
{
timingData = GetTimingDataFromPacket(packetBytes);
}
else
{
double firmware = 0.0;
int indexOfFF = Array.IndexOf(packetBytes, (byte)0xFF);
while (indexOfFF != -1)
{
if (packetBytes.Length > indexOfFF + 2 && packetBytes[indexOfFF + 1] == 0x0B) // FF 0B XY - Firmware X.Y00
{
byte b1 = packetBytes[indexOfFF + 2];
firmware += (b1 >> 4) + (0.1 * (b1 & 0x0F));
DebugWriteLine("Firmware: {0}", firmware);
}
if (packetBytes.Length > indexOfFF + 2 && packetBytes[indexOfFF + 1] == 0x1B) // FF 1B XY - Firmware 0.0XY
{
byte b1 = packetBytes[indexOfFF + 2];
firmware += (0.01 * (b1 >> 4)) + (0.001 * (b1 & 0x0F));
DebugWriteLine("Firmware: {0}", firmware);
}
if (packetBytes.Length > indexOfFF + 1)
{
indexOfFF = Array.IndexOf(packetBytes, (byte)0xFF, indexOfFF + 1);
}
else
{
break;
}
}
}
switch (_readThreadMode)
{
case ReadThreadMode.Receiving:
{
IrDecoder.DecodeIR(timingData, _remoteCallback, _keyboardCallback, _mouseCallback);
break;
}
case ReadThreadMode.Learning:
{
if (timingData == null)
{
if (_learningCode.TimingData.Length > 0)
{
_learningCode = null;
_readThreadMode = ReadThreadMode.LearningFailed;
}
break;
}
if (_learningCode == null)
{
throw new InvalidOperationException("Learning not initialised correctly, _learningCode object is null");
}
_learningCode.AddTimingData(timingData);
// Example: 9F 01 02 9F 15 00 BE 80
int indexOf9F = Array.IndexOf(packetBytes, (byte)0x9F);
while (indexOf9F != -1)
{
if (packetBytes.Length > indexOf9F + 3 && packetBytes[indexOf9F + 1] == 0x15) // 9F 15 XX XX
{
byte b1 = packetBytes[indexOf9F + 2];
byte b2 = packetBytes[indexOf9F + 3];
int onTime, onCount;
GetIrCodeLengths(_learningCode, out onTime, out onCount);
double carrierCount = (b1 * 256) + b2;
if (carrierCount / onCount < 2.0)
{
_learningCode.Carrier = IrCode.CarrierFrequencyDCMode;
}
else
{
double carrier = 1000000 * carrierCount / onTime;
// TODO: Double-Check this calculation.
if (carrier > 32000)
{
_learningCode.Carrier = (int)(carrier + 0.05 * carrier - 0.666667);
// was: _learningCode.Carrier = (int) (carrier + 0.05*carrier - 32000/48000);
}
else
{
_learningCode.Carrier = (int)carrier;
}
}
_readThreadMode = ReadThreadMode.LearningDone;
break;
}
if (packetBytes.Length > indexOf9F + 1)
{
indexOf9F = Array.IndexOf(packetBytes, (byte)0x9F, indexOf9F + 1);
}
else
{
_readThreadMode = ReadThreadMode.LearningFailed;
break;
}
}
break;
}
}
}
}
catch (ThreadInterruptedException ex)
{
DebugWriteLine(ex.Message);
if (_readHandle != null)
{
CancelIo(_readHandle);
}
}
catch (Exception ex)
{
DebugWriteLine(ex.ToString());
if (_readHandle != null)
{
CancelIo(_readHandle);
}
}
finally
{
if (deviceBufferPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(deviceBufferPtr);
}
safeWaitHandle.DangerousRelease();
waitHandle.Close();
}
DebugWriteLine("Read Thread Ended");
}
/// <summary> /// Send an IR Command. /// </summary> /// <param name="code">IR Command data to send.</param> /// <param name="port">IR port to send to.</param> public abstract void Send(IrCode code, int port);
/// <summary>
/// Send an IR Command.
/// </summary>
/// <param name="code">IR Command data to send.</param>
/// <param name="port">IR port to send to.</param>
public override void Send(IrCode code, int port)
{
DebugWrite("Send(): ");
DebugDump(code.TimingData);
byte[] data = DataPacket(code);
int portMask = 0;
// Hardware ports map to bits in mask with Port 1 at left, ascending to right
switch ((BlasterPort)port)
{
case BlasterPort.Both:
portMask = _txPortMask;
break;
case BlasterPort.Port_1:
portMask = GetHighBit(_txPortMask, _numTxPorts);
break;
case BlasterPort.Port_2:
portMask = GetHighBit(_txPortMask, _numTxPorts - 1);
break;
}
TransmitIR(data, code.Carrier, portMask);
}
/// <summary>
/// Creates an IrCode object from old IR file bytes.
/// </summary>
/// <param name="data">IR file bytes.</param>
/// <returns>New IrCode object.</returns>
private static IrCode FromOldData(byte[] data)
{
List<int> timingData = new List<int>();
int len = 0;
for (int index = 0; index < data.Length; index++)
{
byte curByte = data[index];
if ((curByte & 0x80) != 0)
len += (curByte & 0x7F);
else
len -= curByte;
if ((curByte & 0x7F) != 0x7F)
{
timingData.Add(len * 50);
len = 0;
}
}
if (len != 0)
timingData.Add(len * 50);
IrCode newCode = new IrCode(timingData.ToArray());
newCode.FinalizeData();
// Seems some old files have excessively long delays in them .. this might fix that problem ...
return newCode;
}
/// <summary>
/// Send an IR Command.
/// </summary>
/// <param name="code">IR Command data to send.</param>
/// <param name="port">IR port to send to.</param>
public override void Send(IrCode code, int port)
{
DebugWrite("Send(): ");
DebugDump(code.TimingData);
// Reset device (hopefully this will stop the blaster from stalling)
//WriteSync(ResetPacket);
SetOutputPort(port);
SetCarrierFrequency(code.Carrier);
// Send packet
byte[] data = DataPacket(code);
// If the code would go longer than the allowable limit, truncate the code
if (data.Length > 341)
// 340 minus the overhead of 1 byte in 4 for header is 255 bytes of actual time code data, add one for a terminator byte
{
Array.Resize(ref data, 341); // Shrink the array to fit
data[340] = 0x80; // Set the terminator byte
}
WriteSync(data);
}
/// <summary>
/// Determines the pulse count and total time of the supplied IrCode.
/// This is used to determine the carrier frequency.
/// </summary>
/// <param name="code">The IrCode to analyse.</param>
/// <param name="pulseTime">The total ammount of pulse time.</param>
/// <param name="pulseCount">The total count of pulses.</param>
private static void GetIrCodeLengths(IrCode code, out int pulseTime, out int pulseCount)
{
pulseTime = 0;
pulseCount = 0;
foreach (int time in code.TimingData)
{
if (time > 0)
{
pulseTime += time;
pulseCount++;
}
}
}
/*
public static ushort[] ConvertIrCodeToPronto(IrCode irCode)
{
CodeType codeType;
Int64 value;
if (Decode(irCode, out codeType, out value))
return EncodePronto(codeType, value);
else
return null;
}
*/
/// <summary>
/// Converts the ir code into Pronto raw format.
/// </summary>
/// <param name="irCode">The ir code to convert.</param>
/// <returns>Pronto data (raw format).</returns>
public static ushort[] ConvertIrCodeToProntoRaw(IrCode irCode)
{
List<ushort> prontoData = new List<ushort>();
double carrier;
ushort prontoCarrier;
CodeType codeType;
int irCodeCarrier = IrCode.CarrierFrequencyDefault;
switch (irCode.Carrier)
{
case IrCode.CarrierFrequencyDCMode:
codeType = CodeType.RawUnmodulated;
irCodeCarrier = IrCode.CarrierFrequencyDefault;
break;
case IrCode.CarrierFrequencyUnknown:
codeType = CodeType.RawOscillated;
irCodeCarrier = IrCode.CarrierFrequencyDefault;
break;
default:
codeType = CodeType.RawOscillated;
irCodeCarrier = irCode.Carrier;
break;
}
prontoCarrier = ConvertToProntoCarrier(irCodeCarrier);
carrier = prontoCarrier * ProntoClock;
for (int index = 0; index < irCode.TimingData.Length; index++)
{
int duration = Math.Abs(irCode.TimingData[index]);
prontoData.Add((ushort) Math.Round(duration / carrier));
}
if (prontoData.Count % 2 != 0)
prontoData.Add(SignalFree);
ushort burstPairs = (ushort) (prontoData.Count / 2);
prontoData.Insert(0, (ushort) codeType); // Pronto Code Type
prontoData.Insert(1, prontoCarrier); // IR Frequency
prontoData.Insert(2, burstPairs); // First Burst Pairs
prontoData.Insert(3, 0x0000); // Repeat Burst Pairs
return prontoData.ToArray();
}
/// <summary> /// Learn an IR Command. /// </summary> /// <param name="learnTimeout">How long to wait before aborting learn.</param> /// <param name="learned">Newly learned IR Command.</param> /// <returns>Learn status.</returns> public abstract LearnStatus Learn(int learnTimeout, out IrCode learned);
/// <summary> /// Send an IR Command. /// </summary> /// <param name="code">IR Command data to send.</param> /// <param name="port">IR port to send to.</param> public abstract void Send(IrCode code, int port);
/// <summary>
/// Converts an IrCode into raw data for the device.
/// </summary>
/// <param name="code">IrCode to convert.</param>
/// <returns>Raw device data.</returns>
private static byte[] DataPacket(IrCode code)
{
DebugWriteLine("DataPacket()");
if (code.TimingData.Length == 0)
return null;
// Construct data bytes into "packet" ...
List<byte> packet = new List<byte>();
for (int index = 0; index < code.TimingData.Length; index++)
{
double time = code.TimingData[index];
byte duration = (byte) Math.Abs(Math.Round(time / TimingResolution));
bool pulse = (time > 0);
DebugWrite("{0}{1}, ", pulse ? '+' : '-', duration * TimingResolution);
while (duration > 0x7F)
{
packet.Add((byte) (pulse ? 0xFF : 0x7F));
duration -= 0x7F;
}
packet.Add((byte) (pulse ? 0x80 | duration : duration));
}
DebugWriteNewLine();
// Insert byte count markers into packet data bytes ...
int subpackets = (int) Math.Ceiling(packet.Count / (double) 4);
byte[] output = new byte[packet.Count + subpackets + 1];
int outputPos = 0;
for (int packetPos = 0; packetPos < packet.Count;)
{
byte copyCount = (byte) (packet.Count - packetPos < 4 ? packet.Count - packetPos : 0x04);
output[outputPos++] = (byte) (0x80 | copyCount);
for (int index = 0; index < copyCount; index++)
output[outputPos++] = packet[packetPos++];
}
output[outputPos] = 0x80;
return output;
}
/// <summary>
/// Learn an IR Command.
/// </summary>
/// <param name="learnTimeout">How long to wait before aborting learn.</param>
/// <param name="learned">Newly learned IR Command.</param>
/// <returns>Learn status.</returns>
public override LearnStatus Learn(int learnTimeout, out IrCode learned)
{
DebugWriteLine("Learn()");
RestartReadThread(ReadThreadMode.Learning);
learned = null;
_learningCode = new IrCode();
int learnStartTick = Environment.TickCount;
// Wait for the learning to finish ...
while (_readThreadMode == ReadThreadMode.Learning && Environment.TickCount < learnStartTick + learnTimeout)
Thread.Sleep(PacketTimeout);
DebugWriteLine("End Learn");
ReadThreadMode modeWas = _readThreadMode;
RestartReadThread(ReadThreadMode.Receiving);
LearnStatus status = LearnStatus.Failure;
switch (modeWas)
{
case ReadThreadMode.Learning:
status = LearnStatus.Timeout;
break;
case ReadThreadMode.LearningFailed:
status = LearnStatus.Failure;
break;
case ReadThreadMode.LearningDone:
DebugDump(_learningCode.TimingData);
if (_learningCode.FinalizeData())
{
learned = _learningCode;
status = LearnStatus.Success;
}
break;
}
_learningCode = null;
return status;
}
/// <summary>
/// Device read thread method.
/// </summary>
private void ReadThread()
{
byte[] packetBytes;
WaitHandle waitHandle = new ManualResetEvent(false);
SafeHandle safeWaitHandle = waitHandle.SafeWaitHandle;
WaitHandle[] waitHandles = new WaitHandle[] {waitHandle, _stopReadThread};
IntPtr deviceBufferPtr = IntPtr.Zero;
bool success = false;
safeWaitHandle.DangerousAddRef(ref success);
if (!success)
throw new InvalidOperationException("Failed to initialize safe wait handle");
try
{
IntPtr dangerousWaitHandle = safeWaitHandle.DangerousGetHandle();
DeviceIoOverlapped overlapped = new DeviceIoOverlapped();
overlapped.ClearAndSetEvent(dangerousWaitHandle);
deviceBufferPtr = Marshal.AllocHGlobal(DeviceBufferSize);
while (_readThreadMode != ReadThreadMode.Stop)
{
int lastError;
int bytesRead;
bool readDevice = ReadFile(_readHandle, deviceBufferPtr, DeviceBufferSize, out bytesRead,
overlapped.Overlapped);
lastError = Marshal.GetLastWin32Error();
if (!readDevice)
{
if (lastError != ErrorSuccess && lastError != ErrorIoPending)
throw new Win32Exception(lastError);
while (true)
{
int handle = WaitHandle.WaitAny(waitHandles, 2 * PacketTimeout, false);
if (handle == ErrorWaitTimeout)
continue;
if (handle == 0)
break;
if (handle == 1)
throw new ThreadInterruptedException("Read thread stopping by request");
throw new InvalidOperationException(String.Format("Invalid wait handle return: {0}", handle));
}
bool getOverlapped = GetOverlappedResult(_readHandle, overlapped.Overlapped, out bytesRead, true);
lastError = Marshal.GetLastWin32Error();
if (!getOverlapped && lastError != ErrorSuccess)
throw new Win32Exception(lastError);
}
if (bytesRead == 0)
continue;
packetBytes = new byte[bytesRead];
Marshal.Copy(deviceBufferPtr, packetBytes, 0, bytesRead);
DebugWrite("Received bytes ({0}): ", bytesRead);
DebugDump(packetBytes);
int[] timingData = null;
if (_decodeCarry != 0 || packetBytes[0] >= 0x81 && packetBytes[0] <= 0x9E)
{
timingData = GetTimingDataFromPacket(packetBytes);
}
else
{
double firmware = 0.0;
int indexOfFF = Array.IndexOf(packetBytes, (byte) 0xFF);
while (indexOfFF != -1)
{
if (packetBytes.Length > indexOfFF + 2 && packetBytes[indexOfFF + 1] == 0x0B) // FF 0B XY - Firmware X.Y00
{
byte b1 = packetBytes[indexOfFF + 2];
firmware += (b1 >> 4) + (0.1 * (b1 & 0x0F));
DebugWriteLine("Firmware: {0}", firmware);
}
if (packetBytes.Length > indexOfFF + 2 && packetBytes[indexOfFF + 1] == 0x1B) // FF 1B XY - Firmware 0.0XY
{
byte b1 = packetBytes[indexOfFF + 2];
firmware += (0.01 * (b1 >> 4)) + (0.001 * (b1 & 0x0F));
DebugWriteLine("Firmware: {0}", firmware);
}
if (packetBytes.Length > indexOfFF + 1)
indexOfFF = Array.IndexOf(packetBytes, (byte) 0xFF, indexOfFF + 1);
else
break;
}
}
switch (_readThreadMode)
{
case ReadThreadMode.Receiving:
{
IrDecoder.DecodeIR(timingData, _remoteCallback, _keyboardCallback, _mouseCallback);
break;
}
case ReadThreadMode.Learning:
{
if (timingData == null)
{
if (_learningCode.TimingData.Length > 0)
{
_learningCode = null;
_readThreadMode = ReadThreadMode.LearningFailed;
}
break;
}
if (_learningCode == null)
throw new InvalidOperationException("Learning not initialised correctly, _learningCode object is null");
_learningCode.AddTimingData(timingData);
// Example: 9F 01 02 9F 15 00 BE 80
int indexOf9F = Array.IndexOf(packetBytes, (byte) 0x9F);
while (indexOf9F != -1)
{
if (packetBytes.Length > indexOf9F + 3 && packetBytes[indexOf9F + 1] == 0x15) // 9F 15 XX XX
{
byte b1 = packetBytes[indexOf9F + 2];
byte b2 = packetBytes[indexOf9F + 3];
int onTime, onCount;
GetIrCodeLengths(_learningCode, out onTime, out onCount);
double carrierCount = (b1 * 256) + b2;
if (carrierCount / onCount < 2.0)
{
_learningCode.Carrier = IrCode.CarrierFrequencyDCMode;
}
else
{
double carrier = 1000000 * carrierCount / onTime;
// TODO: Double-Check this calculation.
if (carrier > 32000)
{
_learningCode.Carrier = (int) (carrier + 0.05 * carrier - 0.666667);
// was: _learningCode.Carrier = (int) (carrier + 0.05*carrier - 32000/48000);
}
else
{
_learningCode.Carrier = (int) carrier;
}
}
_readThreadMode = ReadThreadMode.LearningDone;
break;
}
if (packetBytes.Length > indexOf9F + 1)
{
indexOf9F = Array.IndexOf(packetBytes, (byte) 0x9F, indexOf9F + 1);
}
else
{
_readThreadMode = ReadThreadMode.LearningFailed;
break;
}
}
break;
}
}
}
}
catch (ThreadInterruptedException ex)
{
DebugWriteLine(ex.Message);
if (_readHandle != null)
CancelIo(_readHandle);
}
catch (Exception ex)
{
DebugWriteLine(ex.ToString());
if (_readHandle != null)
CancelIo(_readHandle);
}
finally
{
if (deviceBufferPtr != IntPtr.Zero)
Marshal.FreeHGlobal(deviceBufferPtr);
safeWaitHandle.DangerousRelease();
waitHandle.Close();
}
DebugWriteLine("Read Thread Ended");
}
/// <summary>
/// Converts an IrCode into raw data for the device.
/// </summary>
/// <param name="code">IrCode to convert.</param>
/// <returns>Raw device data.</returns>
private static byte[] DataPacket(IrCode code)
{
DebugWriteLine("DataPacket()");
if (code.TimingData.Length == 0)
return null;
byte[] data = new byte[code.TimingData.Length * 4];
int dataIndex = 0;
for (int timeIndex = 0; timeIndex < code.TimingData.Length; timeIndex++)
{
uint time = (uint)(50 * (int)Math.Round((double)code.TimingData[timeIndex] / 50));
for (int timeShift = 0; timeShift < 4; timeShift++)
{
data[dataIndex++] = (byte)(time & 0xFF);
time >>= 8;
}
}
return data;
}
/// <summary> /// Learn an IR Command. /// </summary> /// <param name="learnTimeout">How long to wait before aborting learn.</param> /// <param name="learned">Newly learned IR Command.</param> /// <returns>Learn status.</returns> public abstract LearnStatus Learn(int learnTimeout, out IrCode learned);
