| private IORegistryEntryFromPath ( int masterPort, io_string_t &path ) : int | ||
| masterPort | int | |
| path | io_string_t | |
| Результат | int | |
internal static MacSerialDevice TryCreate(NativeMethods.io_string_t path)
{
var d = new MacSerialDevice()
{
_path = path
};
var handle = NativeMethods.IORegistryEntryFromPath(0, ref path).ToIOObject();
if (!handle.IsSet)
{
return(null);
}
using (handle)
{
d._fileSystemName = NativeMethods.IORegistryEntryGetCFProperty_String(handle, NativeMethods.kIOCalloutDeviceKey);
if (d._fileSystemName == null)
{
return(null);
}
}
return(d);
}
internal void Init(NativeMethods.io_string_t path)
{
IntPtr handle; int retryCount = 0, maxRetries = 10;
while (true)
{
var newPath = path.Clone();
using (var service = NativeMethods.IORegistryEntryFromPath(0, ref newPath).ToIOObject())
{
string error;
if (service.IsSet)
{
handle = NativeMethods.IOHIDDeviceCreate(IntPtr.Zero, service);
if (handle != IntPtr.Zero)
{
var ret = NativeMethods.IOHIDDeviceOpen(handle);
if (ret == NativeMethods.IOReturn.Success)
{
break;
}
NativeMethods.CFRelease(handle);
// TODO: Only count up if IOReturn is ExclusiveAccess or Offline.
error = string.Format("Unable to open HID class device (error {1}): {0}", newPath.ToString(), ret);
}
else
{
error = string.Format("HID class device not found: {0}", newPath.ToString());
}
}
else
{
error = string.Format("HID class device path not found: {0}", newPath.ToString());
}
if (++retryCount == maxRetries)
{
throw DeviceException.CreateIOException(Device, error);
}
Debug.WriteLine(string.Format("Retrying ({0})", error));
Thread.Sleep(100);
}
}
_handle = handle;
HandleInitAndOpen();
_readThread.Start();
_writeThread.Start();
}
protected override bool TryCreateDevice(object key, out HidDevice device, out object creationState)
{
creationState = null;
var path = (NativeMethods.io_string_t)key; var hidDevice = new MacHidDevice(path);
using (var handle = NativeMethods.IORegistryEntryFromPath(0, ref path).ToIOObject())
{
if (!handle.IsSet || !hidDevice.GetInfo(handle))
{
device = null; return(false);
}
device = hidDevice; return(true);
}
}
internal void Init(NativeMethods.io_string_t path, MacHidDevice device)
{
IntPtr handle;
using (var service = NativeMethods.IORegistryEntryFromPath(0, ref path).ToIOObject()) {
handle = NativeMethods.IOHIDDeviceCreate(IntPtr.Zero, service);
if (handle == IntPtr.Zero)
{
throw new IOException("HID class device not found.");
}
if (NativeMethods.IOReturn.Success != NativeMethods.IOHIDDeviceOpen(handle))
{
NativeMethods.CFRelease(handle);
throw new IOException("Unable to open HID class device.");
}
}
_device = device;
_handle = handle;
HandleInitAndOpen();
_readThread.Start();
_writeThread.Start();
}
internal static MacHidDevice TryCreate(NativeMethods.io_string_t path)
{
var d = new MacHidDevice()
{
_path = path
};
var service = NativeMethods.IORegistryEntryFromPath(0, ref path).ToIOObject();
if (!service.IsSet)
{
return(null);
}
using (service)
{
int?vid = NativeMethods.IORegistryEntryGetCFProperty_Int(service, NativeMethods.kIOHIDVendorIDKey);
int?pid = NativeMethods.IORegistryEntryGetCFProperty_Int(service, NativeMethods.kIOHIDProductIDKey);
int?version = NativeMethods.IORegistryEntryGetCFProperty_Int(service, NativeMethods.kIOHIDVersionNumberKey);
if (vid == null || pid == null || version == null)
{
return(null);
}
// TODO: Craft the report descriptor from IOHIDElements so we can support it below OS X 10.8...
// Also, our report sizes aren't correct for the no-report-ID case without this...
d._vid = (int)vid;
d._pid = (int)pid;
d._version = (int)version;
d._maxInput = NativeMethods.IORegistryEntryGetCFProperty_Int(service, NativeMethods.kIOHIDMaxInputReportSizeKey) ?? 0;
d._maxOutput = NativeMethods.IORegistryEntryGetCFProperty_Int(service, NativeMethods.kIOHIDMaxOutputReportSizeKey) ?? 0;
d._maxFeature = NativeMethods.IORegistryEntryGetCFProperty_Int(service, NativeMethods.kIOHIDMaxFeatureReportSizeKey) ?? 0;
d._manufacturer = NativeMethods.IORegistryEntryGetCFProperty_String(service, NativeMethods.kIOHIDManufacturerKey);
d._productName = NativeMethods.IORegistryEntryGetCFProperty_String(service, NativeMethods.kIOHIDProductKey);
d._serialNumber = NativeMethods.IORegistryEntryGetCFProperty_String(service, NativeMethods.kIOHIDSerialNumberKey);
d._reportDescriptor = NativeMethods.IORegistryEntryGetCFProperty_Data(service, NativeMethods.kIOHIDReportDescriptorKey);
if (d._maxInput == 0 && d._maxOutput == 0 && d._maxFeature == 0)
{
return(null);
}
// Does this device use Report IDs? Let's find out.
d._reportsUseID = false; bool hasInput = false, hasOutput = false, hasFeature = false;
using (var device = NativeMethods.IOHIDDeviceCreate(IntPtr.Zero, service).ToCFType())
{
if (!device.IsSet)
{
return(null);
}
using (var elementArray = NativeMethods.IOHIDDeviceCopyMatchingElements(device, IntPtr.Zero).ToCFType())
{
if (!elementArray.IsSet)
{
return(null);
}
int elementCount = checked ((int)NativeMethods.CFArrayGetCount(elementArray));
for (int elementIndex = 0; elementIndex < elementCount; elementIndex++)
{
var element = NativeMethods.CFArrayGetValueAtIndex(elementArray, (IntPtr)elementIndex);
if (element == IntPtr.Zero)
{
continue;
}
var elementType = NativeMethods.IOHIDElementGetType(element);
switch (elementType)
{
case NativeMethods.IOHIDElementType.InputMisc:
case NativeMethods.IOHIDElementType.InputButton:
case NativeMethods.IOHIDElementType.InputAxis:
case NativeMethods.IOHIDElementType.InputScanCodes:
hasInput = true; break;
case NativeMethods.IOHIDElementType.Output:
hasOutput = true; break;
case NativeMethods.IOHIDElementType.Feature:
hasFeature = true; break;
}
if (NativeMethods.IOHIDElementGetReportID(element) != 0)
{
d._reportsUseID = true;
}
}
}
}
if (!d._reportsUseID)
{
// It does not use Report IDs. MacOS's maximums do not include said Report ID.
if (d._maxInput != 0)
{
d._maxInput++;
}
if (d._maxOutput != 0)
{
d._maxOutput++;
}
if (d._maxFeature != 0)
{
d._maxFeature++;
}
}
if (!hasInput)
{
d._maxInput = 0;
}
if (!hasOutput)
{
d._maxOutput = 0;
}
if (!hasFeature)
{
d._maxFeature = 0;
}
}
return(d);
}
public override unsafe string GetDeviceString(int index)
{
ushort stringIndex(byte index) => (ushort)((((byte)NativeMethods.DESCRIPTOR_TYPE.STRING) << 8) | index);
void closeDev(NativeMethods.IOUSBDeviceStruct182 **usbDev)
{
(*usbDev)->USBDeviceClose(usbDev);
(*usbDev)->Release(usbDev);
}
// Setup the packet for retrieving supported langId
var setup = new NativeMethods.IOUSBDevRequest
{
bmRequestType = (byte)NativeMethods.ENDPOINT_DIRECTION.IN,
bRequest = (byte)NativeMethods.STANDARD_REQUEST.GET_DESCRIPTOR,
wValue = stringIndex(0),
wIndex = 0,
wLength = 255
};
int kernRet = NativeMethods.IOMasterPort(0, out uint masterPort);
if (kernRet != 0)
{
throw new Exception($"Failed to get IOMasterPort: {kernRet:X}");
}
// Determine USB device from HID path
var hidEntry = NativeMethods.IORegistryEntryFromPath(masterPort, ref _path).ToIOObject();
int deviceEntry = 0;
IntPtr kIOUSBDeviceInterfaceID = NativeMethods.kIOUSBDeviceInterfaceID;
if (hidEntry.IsSet)
{
NativeMethods.IORegistryEntryGetParentEntry(hidEntry, "IOService", out var interfaceEntry);
if (interfaceEntry != 0)
{
NativeMethods.IORegistryEntryGetParentEntry(interfaceEntry, "IOService", out deviceEntry);
}
}
if (deviceEntry == 0)
{
throw new Exception("Failed retrieving USB Device");
}
var err = NativeMethods.IOCreatePlugInInterfaceForService(deviceEntry,
NativeMethods.kIOUSBDeviceUserClientTypeID, NativeMethods.kIOCFPluginInterfaceID,
out var pluginInterface, out var score);
if (err != NativeMethods.IOReturn.Success)
{
throw new Exception($"Plugin Interface creation failed. 0x{err:X}");
}
(*pluginInterface)->QueryInterface(pluginInterface, NativeMethods.CFUUIDGetUUIDBytes(kIOUSBDeviceInterfaceID), out var usbDevPtr);
(*pluginInterface)->Release(pluginInterface);
if (usbDevPtr != null)
{
var usbDev = (NativeMethods.IOUSBDeviceStruct182 * *)usbDevPtr;
err = (*usbDev)->USBDeviceOpen(usbDev);
if (err != NativeMethods.IOReturn.Success)
{
(*usbDev)->Release(usbDev);
throw new DeviceIOException(this, $"Failed to open USB device: 0x{err:X}");
}
fixed(char *sbuf = new char[255])
{
setup.pData = sbuf;
err = (*usbDev)->DeviceRequest(usbDev, &setup);
if (err != NativeMethods.IOReturn.Success)
{
closeDev(usbDev);
throw new DeviceIOException(this, $"DeviceRequest failed: 0x{err:X}");
}
var buf = (byte *)setup.pData;
ushort langId = (ushort)(buf[2] | buf[3] << 8);
for (int i = 0; i < 255; i++)
{
buf[i] = 0;
}
// Retrieve string
setup.wIndex = langId;
setup.wValue = stringIndex((byte)index);
(*usbDev)->DeviceRequest(usbDev, &setup);
if (err != NativeMethods.IOReturn.Success)
{
closeDev(usbDev);
throw new DeviceIOException(this, $"DeviceRequest failed: 0x{err:X}");
}
var deviceString = new StringBuilder(255);
var ssbuf = (char *)setup.pData;
for (int i = 1; i < 255; i++)
{
var c = ssbuf[i];
if (c == 0)
{
break;
}
else
{
deviceString.Append(c);
}
}
closeDev(usbDev);
return(deviceString.ToString());
}
}
else
{
throw new DeviceIOException(this, $"USB Device interface retrieval failed");
}
}