/// <summary>
/// Consume a packet from the buffer if possible, then advance the buffer index.
/// </summary>
/// <param name="buffer">Byte buffer to decode</param>
/// <param name="index">(Ref) Index to read into buffer</param>
/// <exception cref="WearableProxyProtocolException">Thrown when a packet cannot be decoded and the buffer
/// must be discarded.</exception>
/// <exception cref="IndexOutOfRangeException">Thrown when a packet was partially consumed but ran out of
/// buffer contents.</exception>
public override void ProcessPacket(byte[] buffer, ref int index)
{
PacketTypeCode packetType = DecodePacketType(buffer, ref index);
switch (packetType)
{
case PacketTypeCode.KeepAlive:
{
CheckFooter(buffer, ref index);
if (KeepAlive != null)
{
KeepAlive.Invoke();
}
break;
}
case PacketTypeCode.PingQuery:
{
CheckFooter(buffer, ref index);
if (PingQuery != null)
{
PingQuery.Invoke();
}
break;
}
case PacketTypeCode.PingResponse:
{
CheckFooter(buffer, ref index);
if (PingResponse != null)
{
PingResponse.Invoke();
}
break;
}
case PacketTypeCode.SensorControl:
{
bool enabled;
SensorId sensor = DecodeSensorControl(buffer, ref index, out enabled);
CheckFooter(buffer, ref index);
if (SensorControl != null)
{
SensorControl.Invoke(sensor, enabled);
}
break;
}
case PacketTypeCode.SetRssiFilter:
{
int value = DecodeRSSIFilterControlPacket(buffer, ref index);
CheckFooter(buffer, ref index);
if (RSSIFilterValueChange != null)
{
RSSIFilterValueChange.Invoke(value);
}
break;
}
case PacketTypeCode.InitiateDeviceSearch:
{
CheckFooter(buffer, ref index);
if (InitiateDeviceSearch != null)
{
InitiateDeviceSearch.Invoke();
}
break;
}
case PacketTypeCode.StopDeviceSearch:
{
CheckFooter(buffer, ref index);
if (StopDeviceSearch != null)
{
StopDeviceSearch.Invoke();
}
break;
}
case PacketTypeCode.ConnectToDevice:
{
string uid = DecodeDeviceConnectPacket(buffer, ref index);
CheckFooter(buffer, ref index);
if (ConnectToDevice != null)
{
ConnectToDevice.Invoke(uid);
}
break;
}
case PacketTypeCode.DisconnectFromDevice:
{
CheckFooter(buffer, ref index);
if (DisconnectFromDevice != null)
{
DisconnectFromDevice.Invoke();
}
break;
}
case PacketTypeCode.QueryConnectionStatus:
{
CheckFooter(buffer, ref index);
if (QueryConnectionStatus != null)
{
QueryConnectionStatus.Invoke();
}
break;
}
case PacketTypeCode.QueryUpdateInterval:
{
CheckFooter(buffer, ref index);
if (QueryUpdateInterval != null)
{
QueryUpdateInterval.Invoke();
}
break;
}
case PacketTypeCode.SetUpdateInterval:
{
SensorUpdateInterval interval = DecodeSetUpdateIntervalPacket(buffer, ref index);
CheckFooter(buffer, ref index);
if (SetUpdateInterval != null)
{
SetUpdateInterval.Invoke(interval);
}
break;
}
case PacketTypeCode.QuerySensorStatus:
{
CheckFooter(buffer, ref index);
if (QuerySensorStatus != null)
{
QuerySensorStatus.Invoke();
}
break;
}
case PacketTypeCode.GestureControl:
{
bool enabled;
GestureId gestureId = DecodeGestureControl(buffer, ref index, out enabled);
CheckFooter(buffer, ref index);
if (GestureControl != null)
{
GestureControl.Invoke(gestureId, enabled);
}
break;
}
case PacketTypeCode.QueryGestureStatus:
{
CheckFooter(buffer, ref index);
if (QueryGestureStatus != null)
{
QueryGestureStatus.Invoke();
}
break;
}
case PacketTypeCode.QueryRotationSource:
{
CheckFooter(buffer, ref index);
if (QueryRotationSource != null)
{
QueryRotationSource.Invoke();
}
break;
}
case PacketTypeCode.SetRotationSource:
{
RotationSensorSource source = DecodeRotationSource(buffer, ref index);
CheckFooter(buffer, ref index);
if (SetRotationSource != null)
{
SetRotationSource.Invoke(source);
}
break;
}
case PacketTypeCode.SensorFrame:
case PacketTypeCode.DeviceList:
case PacketTypeCode.ConnectionStatus:
case PacketTypeCode.SensorStatus:
case PacketTypeCode.UpdateIntervalValue:
case PacketTypeCode.GestureStatus:
case PacketTypeCode.RotationSourceValue:
// Known, but contextually-invalid packet
throw new WearableProxyProtocolException(WearableConstants.ProxyProviderInvalidPacketError);
default:
// Unknown or corrupt packet
throw new WearableProxyProtocolException(WearableConstants.ProxyProviderInvalidPacketError);
}
}
/// <summary>
/// Consume a packet from the buffer if possible, then advance the buffer index.
/// </summary>
/// <param name="buffer">Byte buffer to decode</param>
/// <param name="index">(Ref) Index to read into buffer</param>
/// <exception cref="WearableProxyProtocolException">Thrown when a packet cannot be decoded and the buffer
/// must be discarded.</exception>
/// <exception cref="IndexOutOfRangeException">Thrown when a packet was partially consumed but ran out of
/// buffer contents.</exception>
public override void ProcessPacket(byte[] buffer, ref int index)
{
PacketTypeCode packetType = DecodePacketType(buffer, ref index);
switch (packetType)
{
case PacketTypeCode.KeepAlive:
{
CheckFooter(buffer, ref index);
if (KeepAlive != null)
{
KeepAlive.Invoke();
}
break;
}
case PacketTypeCode.PingQuery:
{
CheckFooter(buffer, ref index);
if (PingQuery != null)
{
PingQuery.Invoke();
}
break;
}
case PacketTypeCode.PingResponse:
{
CheckFooter(buffer, ref index);
if (PingResponse != null)
{
PingResponse.Invoke();
}
break;
}
case PacketTypeCode.SetRssiFilter:
{
int value = DecodeRSSIFilterControlPacket(buffer, ref index);
CheckFooter(buffer, ref index);
if (RSSIFilterValueChange != null)
{
RSSIFilterValueChange.Invoke(value);
}
break;
}
case PacketTypeCode.InitiateDeviceSearch:
{
CheckFooter(buffer, ref index);
if (InitiateDeviceSearch != null)
{
InitiateDeviceSearch.Invoke();
}
break;
}
case PacketTypeCode.StopDeviceSearch:
{
CheckFooter(buffer, ref index);
if (StopDeviceSearch != null)
{
StopDeviceSearch.Invoke();
}
break;
}
case PacketTypeCode.ConnectToDevice:
{
string uid = DecodeDeviceConnectPacket(buffer, ref index);
CheckFooter(buffer, ref index);
if (ConnectToDevice != null)
{
ConnectToDevice.Invoke(uid);
}
break;
}
case PacketTypeCode.DisconnectFromDevice:
{
CheckFooter(buffer, ref index);
if (DisconnectFromDevice != null)
{
DisconnectFromDevice.Invoke();
}
break;
}
case PacketTypeCode.QueryConnectionStatus:
{
CheckFooter(buffer, ref index);
if (QueryConnectionStatus != null)
{
QueryConnectionStatus.Invoke();
}
break;
}
case PacketTypeCode.QueryConfig:
{
CheckFooter(buffer, ref index);
if (QueryConfigStatus != null)
{
QueryConfigStatus.Invoke();
}
break;
}
case PacketTypeCode.SetNewConfig:
{
// N.B. This generates a tiny bit of garbage, but avoids race conditions by allocating for every packet
WearableDeviceConfig config = DeserializeDeviceConfig(buffer, ref index);
CheckFooter(buffer, ref index);
if (SetNewConfig != null)
{
SetNewConfig.Invoke(config);
}
break;
}
case PacketTypeCode.ConfigStatus:
case PacketTypeCode.SensorFrame:
case PacketTypeCode.DeviceList:
case PacketTypeCode.ConnectionStatus:
// Known, but contextually-invalid packet
throw new WearableProxyProtocolException(WearableConstants.ProxyProviderInvalidPacketError);
default:
// Unknown or corrupt packet
throw new WearableProxyProtocolException(WearableConstants.ProxyProviderInvalidPacketError);
}
}