using System; using System.Runtime.InteropServices; using smx_config; // This is a binding to the native SMX.dll. namespace SMX { [StructLayout(LayoutKind.Sequential, Pack=1)] public struct SMXInfo { [MarshalAs(UnmanagedType.I1)] // work around C# bug: marshals bool as int public bool connected; // The 32-byte hex serial number of the device, followed by '\0'. [MarshalAs(UnmanagedType.ByValArray, SizeConst = 33)] public byte[] m_Serial; public Int16 m_iFirmwareVersion; // Padding to make this the same size as native, where MSVC adds padding even though // we tell it not to: private Byte dummy; }; // Bits for SMXConfig::flags. public enum SMXConfigFlags { SMXConfigFlags_AutoLightingUsePressedAnimations = 1 << 0, }; [StructLayout(LayoutKind.Sequential, Pack=1)] public struct SMXConfig { public Byte unused1, unused2; public Byte unused3, unused4; public Byte unused5, unused6; public UInt16 masterDebounceMilliseconds; public Byte panelThreshold7Low, panelThreshold7High; // was "cardinal" public Byte panelThreshold4Low, panelThreshold4High; // was "center" public Byte panelThreshold2Low, panelThreshold2High; // was "corner" public UInt16 panelDebounceMicroseconds; public UInt16 autoCalibrationPeriodMilliseconds; public Byte autoCalibrationMaxDeviation; public Byte badSensorMinimumDelaySeconds; public UInt16 autoCalibrationAveragesPerUpdate; public Byte unused7, unused8; public Byte panelThreshold1Low, panelThreshold1High; // was "up" [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)] public Byte[] enabledSensors; public Byte autoLightsTimeout; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3*9)] public Byte[] stepColor; public Byte panelRotation; public UInt16 autoCalibrationSamplesPerAverage; public Byte masterVersion; public Byte configVersion; // The remaining thresholds (configVersion >= 2). [MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)] public Byte[] unused9; public Byte panelThreshold0Low, panelThreshold0High; public Byte panelThreshold3Low, panelThreshold3High; public Byte panelThreshold5Low, panelThreshold5High; public Byte panelThreshold6Low, panelThreshold6High; public Byte panelThreshold8Low, panelThreshold8High; // Master delay debouncing (version >= 3). If enabled, this will add a // corresponding delay to inputs, which the game needs to compensate for. // This is disabled by default. public UInt16 debounceDelayMs; // Packed flags (SMXConfigFlags). public Byte flags; // It would be simpler to set flags to [MarshalAs(UnmanagedType.U8)], but // that doesn't work. public SMXConfigFlags configFlags { get { return (SMXConfigFlags) flags; } set { flags = (Byte) value; } } // Pad this struct to exactly 250 bytes. [MarshalAs(UnmanagedType.ByValArray, SizeConst = 166)] public Byte[] padding; // enabledSensors is a mask of which panels are enabled. Return this as an array // for convenience. public bool[] GetEnabledPanels() { return new bool[] { (enabledSensors[0] & 0xF0) != 0, (enabledSensors[0] & 0x0F) != 0, (enabledSensors[1] & 0xF0) != 0, (enabledSensors[1] & 0x0F) != 0, (enabledSensors[2] & 0xF0) != 0, (enabledSensors[2] & 0x0F) != 0, (enabledSensors[3] & 0xF0) != 0, (enabledSensors[3] & 0x0F) != 0, (enabledSensors[4] & 0xF0) != 0, }; } // Set enabledSensors from an array returned from GetEnabledPanels. public void SetEnabledPanels(bool[] panels) { for(int i = 0; i < 5; ++i) enabledSensors[i] = 0; if(panels[0]) enabledSensors[0] |= 0xF0; if(panels[1]) enabledSensors[0] |= 0x0F; if(panels[2]) enabledSensors[1] |= 0xF0; if(panels[3]) enabledSensors[1] |= 0x0F; if(panels[4]) enabledSensors[2] |= 0xF0; if(panels[5]) enabledSensors[2] |= 0x0F; if(panels[6]) enabledSensors[3] |= 0xF0; if(panels[7]) enabledSensors[3] |= 0x0F; if(panels[8]) enabledSensors[4] |= 0xF0; } // The layout of this structure (and the underlying C struct) matches the firmware configuration // data. This is a bit inconvenient for the panel thresholds which aren't contiguous, so these // helpers just convert them to and from arrays. public Byte[] GetLowThresholds() { return new Byte[] { panelThreshold0Low, panelThreshold1Low, panelThreshold2Low, panelThreshold3Low, panelThreshold4Low, panelThreshold5Low, panelThreshold6Low, panelThreshold7Low, panelThreshold8Low, }; } public Byte[] GetHighThresholds() { return new Byte[] { panelThreshold0High, panelThreshold1High, panelThreshold2High, panelThreshold3High, panelThreshold4High, panelThreshold5High, panelThreshold6High, panelThreshold7High, panelThreshold8High, }; } public void SetLowThresholds(Byte[] values) { panelThreshold0Low = values[0]; panelThreshold1Low = values[1]; panelThreshold2Low = values[2]; panelThreshold3Low = values[3]; panelThreshold4Low = values[4]; panelThreshold5Low = values[5]; panelThreshold6Low = values[6]; panelThreshold7Low = values[7]; panelThreshold8Low = values[8]; } public void SetHighThresholds(Byte[] values) { panelThreshold0High = values[0]; panelThreshold1High = values[1]; panelThreshold2High = values[2]; panelThreshold3High = values[3]; panelThreshold4High = values[4]; panelThreshold5High = values[5]; panelThreshold6High = values[6]; panelThreshold7High = values[7]; panelThreshold8High = values[8]; } }; public struct SMXSensorTestModeData { // If false, sensorLevel[n][*] is zero because we didn't receive a response from that panel. [MarshalAs(UnmanagedType.ByValArray, ArraySubType=UnmanagedType.I1, SizeConst = 9)] public bool[] bHaveDataFromPanel; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 9*4)] public Int16[] sensorLevel; [MarshalAs(UnmanagedType.ByValArray, ArraySubType=UnmanagedType.I1, SizeConst = 9*4)] public bool[] bBadSensorInput; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 9)] public int[] iDIPSwitchPerPanel; public override bool Equals(object obj) { SMXSensorTestModeData other = (SMXSensorTestModeData) obj; return Helpers.SequenceEqual(bHaveDataFromPanel, other.bHaveDataFromPanel) && Helpers.SequenceEqual(sensorLevel, other.sensorLevel) && Helpers.SequenceEqual(bBadSensorInput, other.bBadSensorInput) && Helpers.SequenceEqual(iDIPSwitchPerPanel, other.iDIPSwitchPerPanel); } // Dummy override to silence a bad warning. We don't use these in containers to need // a hash code implementation. public override int GetHashCode() { return base.GetHashCode(); } public bool AnySensorsOnPanelNotResponding(int panel) { if(!bHaveDataFromPanel[panel]) return false; for(int sensor = 0; sensor < 4; ++sensor) if(bBadSensorInput[panel*4+sensor]) return true; return false; } }; public static class SMX { [System.Flags] enum LoadLibraryFlags : uint { None = 0, DONT_RESOLVE_DLL_REFERENCES = 0x00000001, LOAD_IGNORE_CODE_AUTHZ_LEVEL = 0x00000010, LOAD_LIBRARY_AS_DATAFILE = 0x00000002, LOAD_LIBRARY_AS_DATAFILE_EXCLUSIVE = 0x00000040, LOAD_LIBRARY_AS_IMAGE_RESOURCE = 0x00000020, LOAD_LIBRARY_SEARCH_APPLICATION_DIR = 0x00000200, LOAD_LIBRARY_SEARCH_DEFAULT_DIRS = 0x00001000, LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR = 0x00000100, LOAD_LIBRARY_SEARCH_SYSTEM32 = 0x00000800, LOAD_LIBRARY_SEARCH_USER_DIRS = 0x00000400, LOAD_WITH_ALTERED_SEARCH_PATH = 0x00000008 } [DllImport("kernel32", SetLastError=true)] static extern IntPtr LoadLibrary(string lpFileName); [DllImport("kernel32.dll", SetLastError = true)] static extern IntPtr LoadLibraryEx(string lpFileName, IntPtr hReservedNull, LoadLibraryFlags dwFlags); [DllImport("SMX.dll", CallingConvention = CallingConvention.Cdecl)] private static extern void SMX_Start( [MarshalAs(UnmanagedType.FunctionPtr)] InternalUpdateCallback callback, IntPtr user); [DllImport("SMX.dll", CallingConvention = CallingConvention.Cdecl)] private static extern void SMX_Stop(); [DllImport("SMX.dll", CallingConvention = CallingConvention.Cdecl)] private static extern void SMX_GetInfo(int pad, out SMXInfo info); [DllImport("SMX.dll", CallingConvention = CallingConvention.Cdecl)] private static extern UInt16 SMX_GetInputState(int pad); [DllImport("SMX.dll", CallingConvention = CallingConvention.Cdecl)] [return:MarshalAs(UnmanagedType.I1)] private static extern bool SMX_GetConfig(int pad, out SMXConfig config); [DllImport("SMX.dll", CallingConvention = CallingConvention.Cdecl)] private static extern void SMX_SetConfig(int pad, ref SMXConfig config); [DllImport("SMX.dll", CallingConvention = CallingConvention.Cdecl)] private static extern void SMX_FactoryReset(int pad); [DllImport("SMX.dll", CallingConvention = CallingConvention.Cdecl)] private static extern void SMX_ForceRecalibration(int pad); [DllImport("SMX.dll", CallingConvention = CallingConvention.Cdecl)] private static extern void SMX_SetTestMode(int pad, int mode); [DllImport("SMX.dll", CallingConvention = CallingConvention.Cdecl)] private static extern bool SMX_GetTestData(int pad, out SMXSensorTestModeData data); [DllImport("SMX.dll", CallingConvention = CallingConvention.Cdecl)] private static extern bool SMX_SetLights(byte[] buf); [DllImport("SMX.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)] private static extern IntPtr SMX_Version(); public enum LightsType { LightsType_Released, // animation while panels are released LightsType_Pressed, // animation while panel is pressed }; public static string Version() { if(!DLLAvailable()) return ""; // I can't find any way to marshal a simple null-terminated string. Marshalling // UnmanagedType.LPStr tries to deallocate the string, which crashes since it's // a static string. unsafe { sbyte *p = (sbyte *) SMX_Version(); int length = 0; while(p[length] != 0) ++length; return new string(p, 0, length); } } // Check if the native DLL is available. This is mostly to avoid exceptions in the designer. // This returns false if the DLL doesn't load. public static bool DLLAvailable() { return LoadLibrary("SMX.dll") != IntPtr.Zero; } // Check if the native DLL exists. This will return false if SMX.dll is missing entirely, // but not if it fails to load for another reason like runtime dependencies. This just lets // us print a more specific error message. public static bool DLLExists() { return LoadLibraryEx("SMX.dll", (IntPtr)0, LoadLibraryFlags.LOAD_LIBRARY_AS_DATAFILE_EXCLUSIVE) != IntPtr.Zero; } public delegate void UpdateCallback(int PadNumber, SMXUpdateCallbackReason reason); // The C API allows a user pointer, but we don't use that here. [UnmanagedFunctionPointer(CallingConvention.Cdecl)] public delegate void InternalUpdateCallback(int PadNumber, int reason, IntPtr user); private static InternalUpdateCallback CurrentUpdateCallback; public static void Start(UpdateCallback callback) { if(!DLLAvailable()) return; // Sanity check SMXConfig, which should be 250 bytes. If this is incorrect, // check the padding array. { SMXConfig config = new SMXConfig(); int bytes = Marshal.SizeOf(config); if(bytes != 250) throw new Exception("SMXConfig is " + bytes + " bytes, but should be 250 bytes"); } // Make a wrapper to convert from the native enum to SMXUpdateCallbackReason. InternalUpdateCallback NewCallback = delegate(int PadNumber, int reason, IntPtr user) { SMXUpdateCallbackReason ReasonEnum = (SMXUpdateCallbackReason) Enum.ToObject(typeof(SMXUpdateCallbackReason), reason); callback(PadNumber, ReasonEnum); }; if(callback == null) NewCallback = null; SMX_Start(NewCallback, IntPtr.Zero); // Keep a reference to the delegate, so it isn't garbage collected. Do this last. Once // we do this the old callback may be collected, so we want to be sure that native code // has already updated the callback. CurrentUpdateCallback = NewCallback; Console.WriteLine("Struct sizes (C#): " + Marshal.SizeOf(typeof(SMXConfig)) + " " + Marshal.SizeOf(typeof(SMXInfo)) + " " + Marshal.SizeOf(typeof(SMXSensorTestModeData))); } public static void Stop() { if(!DLLAvailable()) return; SMX_Stop(); } public enum SMXUpdateCallbackReason { Updated, FactoryResetCommandComplete }; public static void GetInfo(int pad, out SMXInfo info) { if(!DLLAvailable()) { info = new SMXInfo(); return; } SMX_GetInfo(pad, out info); } public static UInt16 GetInputState(int pad) { if(!DLLAvailable()) return 0; return SMX_GetInputState(pad); } public static bool GetConfig(int pad, out SMXConfig config) { if(!DLLAvailable()) { config = new SMXConfig(); config.enabledSensors = new Byte[5]; config.stepColor = new Byte[3*9]; return false; } return SMX_GetConfig(pad, out config); } public static void SetConfig(int pad, SMXConfig config) { if(!DLLAvailable()) return; // Always bump the configVersion to the version we support on write. config.configVersion = 2; SMX_SetConfig(pad, ref config); } public enum SensorTestMode { Off = 0, UncalibratedValues = '0', CalibratedValues = '1', Noise = '2', Tare = '3', }; public static void SetTestMode(int pad, SensorTestMode mode) { if(!DLLAvailable()) return; SMX_SetTestMode(pad, (int) mode); } public static bool GetTestData(int pad, out SMXSensorTestModeData data) { if(!DLLAvailable()) { data = new SMXSensorTestModeData(); return false; } return SMX_GetTestData(pad, out data); } public static void FactoryReset(int pad) { if(!DLLAvailable()) return; SMX_FactoryReset(pad); } public static void ForceRecalibration(int pad) { if(!DLLAvailable()) return; SMX_ForceRecalibration(pad); } public static void SetLights(byte[] buf) { if(!DLLAvailable()) return; if(buf.Length != 9*16*3*2) throw new Exception("SetLights buffer has an invalid length: " + buf.Length); SMX_SetLights(buf); } // SMXPanelAnimation [DllImport("SMX.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)] [return:MarshalAs(UnmanagedType.I1)] private static extern bool SMX_LightsAnimation_Load(byte[] buf, int size, int pad, int type, out IntPtr error); [DllImport("SMX.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)] private static extern void SMX_LightsAnimation_SetAuto(bool enable); public static bool LightsAnimation_Load(byte[] buf, int pad, LightsType type, out string error) { if(!DLLAvailable()) { error = "SMX.DLL not available"; return false; } error = ""; IntPtr error_pointer; bool result = SMX_LightsAnimation_Load(buf, buf.Length, pad, (int) type, out error_pointer); if(!result) { // SMX_LightsAnimation_Load takes a char **error, which is set to the error // string. error = Marshal.PtrToStringAnsi(error_pointer); } return result; } public static void LightsAnimation_SetAuto(bool enable) { if(!DLLAvailable()) return; SMX_LightsAnimation_SetAuto(enable); } } }