/// <summary>
/// When the device is opened this is called to check that the device is OK (e.g. has the right capabilities, etc).
/// </summary>
private void CheckDevice(FileSystem.IOpenFile irDevice, DeviceFeatures deviceFeatures)
{
if (!deviceFeatures.CanReceive())
{
throw new NotSupportedException("This IR device cannot receive.");
}
if (!deviceFeatures.HasFlag(DeviceFeatures.ReceiveModeMode2))
{
throw new NotSupportedException("Only MODE2 is supported for capture, but this device does not support MODE2.");
}
uint recMode = _fileSystem.IoCtlReadUInt32(irDevice, LircConstants.LIRC_GET_REC_MODE);
if (recMode != LircConstants.LIRC_MODE_MODE2)
{
// The Raspberry Pi seems to always default to MODE2 when opening, but in case that changes got the option to set the mode.
try
{
_fileSystem.IoCtlWrite(irDevice, LircConstants.LIRC_SET_REC_MODE, LircConstants.LIRC_MODE_MODE2);
}
catch (System.ComponentModel.Win32Exception err)
{
throw new NotSupportedException("Unable to set receive mode to MODE2.", err);
}
}
}
/// <summary>
/// When the device is opened this is called to check that the device is OK (e.g. has the right capabilities, etc).
/// </summary>
protected virtual void CheckDevice(FileSystem.IOpenFile irDevice, DeviceFeatures deviceFeatures)
{
if (!deviceFeatures.CanSend())
{
throw new NotSupportedException("This IR device cannot send.");
}
if (!deviceFeatures.HasFlag(DeviceFeatures.SendModePulse))
{
throw new NotSupportedException("Only PULSE mode is supported for sending, but this device does not support PULSE.");
}
uint sendMode = _fileSystem.IoCtlReadUInt32(irDevice, LircConstants.LIRC_GET_SEND_MODE);
if (sendMode != LircConstants.LIRC_MODE_PULSE)
{
// The Raspberry Pi only supports PULSE mode and so it is the default mode, but incase that changes got the option to set the mode.
try
{
_fileSystem.IoCtlWrite(irDevice, LircConstants.LIRC_SET_SEND_MODE, LircConstants.LIRC_MODE_PULSE);
}
catch (System.ComponentModel.Win32Exception err)
{
throw new NotSupportedException("Unable to set send mode to PULSE.", err);
}
}
}
private uint?GetIoCtlValueIfImplemented(FileSystem.IOpenFile irDevice, uint requestCode)
{
try
{
return(_fileSystem.IoCtlReadUInt32(irDevice, requestCode));
}
catch (System.ComponentModel.Win32Exception err) when(err.NativeErrorCode == ENOSYS || err.NativeErrorCode == ENOTTY)
{
return(null);
}
}