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HIDTests.cs
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HIDTests.cs
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using System.Globalization;
using NUnit.Framework;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using UnityEngine.InputSystem;
using UnityEngine.InputSystem.Controls;
using UnityEngine.InputSystem.LowLevel;
using UnityEngine.InputSystem.HID;
using Unity.Collections.LowLevel.Unsafe;
using UnityEngine;
using UnityEngine.InputSystem.Layouts;
using UnityEngine.InputSystem.Processors;
using UnityEngine.InputSystem.Utilities;
using UnityEngine.TestTools.Utils;
////TODO: add test to make sure we're not grabbing HIDs that have more specific layouts
// No HID devices on Android
#if (!UNITY_ANDROID && !UNITY_IOS) || UNITY_EDITOR
internal class HIDTests : CoreTestsFixture
{
[Test]
[Category("Devices")]
public void Devices_CanCreateGenericHID()
{
// Construct a HID descriptor for a bogus multi-axis controller.
var hidDescriptor = new HID.HIDDeviceDescriptor
{
usage = (int)HID.GenericDesktop.MultiAxisController,
usagePage = HID.UsagePage.GenericDesktop,
elements = new[]
{
// 16bit X and Y axes.
new HID.HIDElementDescriptor { usage = (int)HID.GenericDesktop.X, usagePage = HID.UsagePage.GenericDesktop, reportType = HID.HIDReportType.Input, reportId = 1, reportOffsetInBits = 0, reportSizeInBits = 16 },
new HID.HIDElementDescriptor { usage = (int)HID.GenericDesktop.Y, usagePage = HID.UsagePage.GenericDesktop, reportType = HID.HIDReportType.Input, reportId = 1, reportOffsetInBits = 16, reportSizeInBits = 16 },
// 1bit primary and secondary buttons.
new HID.HIDElementDescriptor { usage = (int)HID.Button.Primary, usagePage = HID.UsagePage.Button, reportType = HID.HIDReportType.Input, reportId = 1, reportOffsetInBits = 32, reportSizeInBits = 1 },
new HID.HIDElementDescriptor { usage = (int)HID.Button.Secondary, usagePage = HID.UsagePage.Button, reportType = HID.HIDReportType.Input, reportId = 1, reportOffsetInBits = 33, reportSizeInBits = 1 },
}
};
runtime.ReportNewInputDevice(
new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
manufacturer = "TestVendor",
product = "TestHID",
capabilities = hidDescriptor.ToJson()
}.ToJson());
InputSystem.Update();
Assert.That(InputSystem.devices, Has.Count.EqualTo(1));
var device = InputSystem.devices[0];
Assert.That(device, Is.TypeOf<HID>());
Assert.That(device.description.interfaceName, Is.EqualTo(HID.kHIDInterface));
Assert.That(device.children, Has.Count.EqualTo(3));
Assert.That(device.children, Has.Exactly(1).With.Property("name").EqualTo("trigger").And.TypeOf<ButtonControl>());
Assert.That(device.children, Has.Exactly(1).With.Property("name").EqualTo("button2").And.TypeOf<ButtonControl>());
Assert.That(device.children, Has.Exactly(1).With.Property("name").EqualTo("stick").And.TypeOf<StickControl>());
var x = device["stick/x"];
var y = device["stick/y"];
var button1 = device["trigger"];
var button2 = device["button2"];
Assert.That(device.stateBlock.sizeInBits, Is.EqualTo(5 * 8));
Assert.That(x.stateBlock.byteOffset, Is.Zero);
Assert.That(y.stateBlock.byteOffset, Is.EqualTo(2));
Assert.That(x.stateBlock.bitOffset, Is.Zero);
Assert.That(y.stateBlock.bitOffset, Is.Zero);
Assert.That(button1.stateBlock.byteOffset, Is.EqualTo(4));
Assert.That(button2.stateBlock.byteOffset, Is.EqualTo(4));
Assert.That(button1.stateBlock.bitOffset, Is.EqualTo(0));
Assert.That(button2.stateBlock.bitOffset, Is.EqualTo(1));
}
[Test]
[Category("Devices")]
public void Devices_DevicesNotAllowedBySupportedHIDUsagesAreSkipped()
{
var hidDescriptor = new HID.HIDDeviceDescriptor
{
usage = 1234,
usagePage = (HID.UsagePage) 5678,
// need at least one valid element for the device not to be ignored
elements = new[]
{
new HID.HIDElementDescriptor { usage = (int)HID.GenericDesktop.X, usagePage = HID.UsagePage.GenericDesktop, reportType = HID.HIDReportType.Input, reportId = 1, reportOffsetInBits = 0, reportSizeInBits = 16 },
}
};
var descriptionJson = new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
manufacturer = "TestVendor",
product = "TestHID",
capabilities = hidDescriptor.ToJson()
}.ToJson();
var deviceId = runtime.AllocateDeviceId();
runtime.ReportNewInputDevice(descriptionJson, deviceId);
InputSystem.Update();
Assert.That(InputSystem.devices, Has.Count.EqualTo(0));
Assert.That(InputSystem.GetDeviceById(deviceId), Is.Null);
Assert.That(InputSystem.GetUnsupportedDevices(), Has.Count.EqualTo(1));
Assert.That(InputSystem.GetUnsupportedDevices()[0].product, Is.EqualTo("TestHID"));
HIDSupport.supportedHIDUsages = new ReadOnlyArray<HIDSupport.HIDPageUsage>(
new[] {new HIDSupport.HIDPageUsage((HID.UsagePage) 5678, 1234)}
);
Assert.That(InputSystem.devices, Has.Count.EqualTo(1));
Assert.That(InputSystem.GetDeviceById(deviceId), Is.Not.Null);
Assert.That(InputSystem.devices[0], Is.TypeOf<HID>());
Assert.That(InputSystem.devices[0].description.product, Is.EqualTo("TestHID"));
Assert.That(((HID)InputSystem.devices[0]).hidDescriptor.usagePage, Is.EqualTo((HID.UsagePage) 5678));
Assert.That(((HID)InputSystem.devices[0]).hidDescriptor.usage, Is.EqualTo(1234));
HIDSupport.supportedHIDUsages = new ReadOnlyArray<HIDSupport.HIDPageUsage>(
new[] {new HIDSupport.HIDPageUsage((HID.UsagePage) 5678, 1234)}
);
// No change.
Assert.That(InputSystem.devices, Has.Count.EqualTo(1));
Assert.That(InputSystem.GetDeviceById(deviceId), Is.Not.Null);
Assert.That(InputSystem.devices[0], Is.TypeOf<HID>());
Assert.That(InputSystem.devices[0].description.product, Is.EqualTo("TestHID"));
Assert.That(((HID)InputSystem.devices[0]).hidDescriptor.usagePage, Is.EqualTo((HID.UsagePage) 5678));
Assert.That(((HID)InputSystem.devices[0]).hidDescriptor.usage, Is.EqualTo(1234));
// Add another.
var descriptionJson2 = new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
manufacturer = "TestVendor",
product = "OtherTestHID",
capabilities = hidDescriptor.ToJson()
}.ToJson();
var deviceId2 = runtime.AllocateDeviceId();
runtime.ReportNewInputDevice(descriptionJson2, deviceId2);
InputSystem.Update();
Assert.That(InputSystem.devices, Has.Count.EqualTo(2));
Assert.That(InputSystem.GetDeviceById(deviceId2), Is.Not.Null);
Assert.That(InputSystem.devices[1], Is.TypeOf<HID>());
Assert.That(InputSystem.devices[1].description.product, Is.EqualTo("OtherTestHID"));
Assert.That(((HID)InputSystem.devices[1]).hidDescriptor.usagePage, Is.EqualTo((HID.UsagePage) 5678));
Assert.That(((HID)InputSystem.devices[1]).hidDescriptor.usage, Is.EqualTo(1234));
HIDSupport.supportedHIDUsages = new ReadOnlyArray<HIDSupport.HIDPageUsage>();
Assert.That(InputSystem.devices, Is.Empty);
Assert.That(InputSystem.GetDeviceById(deviceId), Is.Null);
Assert.That(InputSystem.GetDeviceById(deviceId2), Is.Null);
Assert.That(InputSystem.GetUnsupportedDevices(), Has.Count.EqualTo(2));
Assert.That(InputSystem.GetUnsupportedDevices(), Has.Exactly(1).With.Property("product").EqualTo("TestHID"));
Assert.That(InputSystem.GetUnsupportedDevices(), Has.Exactly(1).With.Property("product").EqualTo("OtherTestHID"));
}
[Test]
[Category("Devices")]
public void Devices_CanCreateGenericHID_FromDeviceWithBinaryReportDescriptor()
{
// This is several snippets from the PS4 controller's HID report descriptor
// pasted together.
var reportDescriptor = new byte[]
{
0x05, 0x01, // Usage Page (Generic Desktop)
0x09, 0x05, // Usage (Gamepad)
0xA1, 0x01, // Collection (Application)
0x85, 0x01, // Report ID (1)
0x09, 0x30, // Usage (X)
0x09, 0x31, // Usage (Y)
0x09, 0x32, // Usage (Z)
0x09, 0x35, // Usage (Rz)
0x15, 0x00, // Logical Minimum (0)
0x26, 0xFF, 0x00, // Logical Maximum (255)
0x75, 0x08, // Report Size (8)
0x95, 0x04, // Report Count (4)
0x81, 0x02, // Input (Data, Var, Abs, NWrp, Lin, Pref, NNul, Bit)
0x09, 0x39, // Usage (Hat Switch)
0x15, 0x00, // Logical Minimum (0)
0x25, 0x07, // Logical Maximum (7)
0x35, 0x00, // Physical Maximum (0)
0x46, 0x3B, 0x01, // Physical Maximum (315)
0x65, 0x14, // Unit (Eng Rot: Degree)
0x75, 0x04, // Report Size (4)
0x95, 0x01, // Report Count (1)
0x81, 0x42, // Input (Data, Var, Abs, NWrp, Lin, Pref, Null, Bit)
0x65, 0x00, // Unit (None)
0x05, 0x09, // Usage Page (Button)
0x19, 0x01, // Usage Minimum (Button 1)
0x29, 0x0E, // Usage Maximum (Button 14)
0x15, 0x00, // Logical Minimum (0)
0x25, 0x01, // Logical Maximum (1)
0x75, 0x01, // Report Size (1)
0x95, 0x0E, // Report Count (14)
0x81, 0x02, // Input (Data, Var, Abs, NWrp, Lin, Pref, NNul, Bit)
0x06, 0x00, 0xFF, // Usage Page (Vendor-Defined 1)
0x09, 0x21, // Usage (Vendor-Defined 33)
0x95, 0x36, // Report Count (54)
0x81, 0x02, // Input (Data, Var, Abs, NWrp, Lin, Pref, NNul, Bit)
0x85, 0x05, // Report ID (5)
0x09, 0x22, // Usage (Vendor-Defined 34)
0x95, 0x1F, // Report Count (31)
0x91, 0x02, // Output (Data, Var, Abs, NWrp, Lin, Pref, NNul, NVol, Bit)
0xC0, // End Collection
};
const int kNumElements = 4 + 1 + 14 + 54 + 31;
// The HID report descriptor is fetched from the device via an IOCTL.
var deviceId = runtime.AllocateDeviceId();
unsafe
{
runtime.SetDeviceCommandCallback(deviceId,
(id, commandPtr) =>
{
if (commandPtr->type == HID.QueryHIDReportDescriptorSizeDeviceCommandType)
return reportDescriptor.Length;
if (commandPtr->type == HID.QueryHIDReportDescriptorDeviceCommandType
&& commandPtr->payloadSizeInBytes >= reportDescriptor.Length)
{
fixed(byte* ptr = reportDescriptor)
{
UnsafeUtility.MemCpy(commandPtr->payloadPtr, ptr, reportDescriptor.Length);
return reportDescriptor.Length;
}
}
return InputDeviceCommand.GenericFailure;
});
}
// Report device.
runtime.ReportNewInputDevice(
new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
manufacturer = "TestVendor",
product = "TestHID",
capabilities = new HID.HIDDeviceDescriptor
{
vendorId = 0x123,
productId = 0x234
}.ToJson()
}.ToJson(), deviceId);
InputSystem.Update();
// Grab device.
var device = (Joystick)InputSystem.GetDeviceById(deviceId);
Assert.That(device, Is.Not.Null);
Assert.That(device, Is.TypeOf<Joystick>());
var deviceDescription = device.description;
Assert.That(deviceDescription.interfaceName, Is.EqualTo(HID.kHIDInterface));
var hidDescriptor = HID.ReadHIDDeviceDescriptor(ref deviceDescription,
(ref InputDeviceCommand command) => runtime.DeviceCommand(device.deviceId, ref command));
// Check HID descriptor.
Assert.That(hidDescriptor.vendorId, Is.EqualTo(0x123));
Assert.That(hidDescriptor.productId, Is.EqualTo(0x234));
Assert.That(hidDescriptor.usagePage, Is.EqualTo(HID.UsagePage.GenericDesktop));
Assert.That(hidDescriptor.usage, Is.EqualTo((int)HID.GenericDesktop.Gamepad));
Assert.That(hidDescriptor.elements.Length, Is.EqualTo(kNumElements));
Assert.That(hidDescriptor.elements[0].usagePage, Is.EqualTo(HID.UsagePage.GenericDesktop));
Assert.That(hidDescriptor.elements[0].usage, Is.EqualTo((int)HID.GenericDesktop.X));
Assert.That(hidDescriptor.elements[0].reportId, Is.EqualTo(1));
Assert.That(hidDescriptor.elements[0].reportOffsetInBits, Is.EqualTo(8)); // Descriptor has report ID so that's the first thing in reports.
Assert.That(hidDescriptor.elements[0].reportSizeInBits, Is.EqualTo(8));
Assert.That(hidDescriptor.elements[0].logicalMin, Is.EqualTo(0));
Assert.That(hidDescriptor.elements[0].logicalMax, Is.EqualTo(255));
Assert.That(hidDescriptor.elements[1].usagePage, Is.EqualTo(HID.UsagePage.GenericDesktop));
Assert.That(hidDescriptor.elements[1].usage, Is.EqualTo((int)HID.GenericDesktop.Y));
Assert.That(hidDescriptor.elements[1].reportId, Is.EqualTo(1));
Assert.That(hidDescriptor.elements[1].reportOffsetInBits, Is.EqualTo(16));
Assert.That(hidDescriptor.elements[1].reportSizeInBits, Is.EqualTo(8));
Assert.That(hidDescriptor.elements[1].logicalMin, Is.EqualTo(0));
Assert.That(hidDescriptor.elements[1].logicalMax, Is.EqualTo(255));
Assert.That(hidDescriptor.elements[4].hasNullState, Is.True);
Assert.That(hidDescriptor.elements[4].physicalMax, Is.EqualTo(315));
Assert.That(hidDescriptor.elements[4].unit, Is.EqualTo(0x14));
Assert.That(hidDescriptor.elements[5].unit, Is.Zero);
Assert.That(hidDescriptor.elements[5].reportOffsetInBits, Is.EqualTo(5 * 8 + 4));
Assert.That(hidDescriptor.elements[5].usagePage, Is.EqualTo(HID.UsagePage.Button));
Assert.That(hidDescriptor.elements[6].usagePage, Is.EqualTo(HID.UsagePage.Button));
Assert.That(hidDescriptor.elements[7].usagePage, Is.EqualTo(HID.UsagePage.Button));
Assert.That(hidDescriptor.elements[5].usage, Is.EqualTo(1));
Assert.That(hidDescriptor.elements[6].usage, Is.EqualTo(2));
Assert.That(hidDescriptor.elements[7].usage, Is.EqualTo(3));
Assert.That(hidDescriptor.collections.Length, Is.EqualTo(1));
Assert.That(hidDescriptor.collections[0].type, Is.EqualTo(HID.HIDCollectionType.Application));
Assert.That(hidDescriptor.collections[0].childCount, Is.EqualTo(kNumElements));
////TODO: check hat switch
}
[Test]
[Category("Devices")]
public void Devices_CanCreateGenericHID_FromDeviceWithParsedReportDescriptor()
{
var deviceId = runtime.AllocateDeviceId();
unsafe
{
runtime.SetDeviceCommandCallback(deviceId,
(id, commandPtr) =>
{
if (commandPtr->type == HID.QueryHIDParsedReportDescriptorDeviceCommandType)
{
var hidDescriptor = new HID.HIDDeviceDescriptor
{
usage = (int)HID.GenericDesktop.MultiAxisController,
usagePage = HID.UsagePage.GenericDesktop,
elements = new[]
{
new HID.HIDElementDescriptor { usage = (int)HID.GenericDesktop.X, usagePage = HID.UsagePage.GenericDesktop, reportType = HID.HIDReportType.Input, reportId = 1, reportOffsetInBits = 0, reportSizeInBits = 16 },
new HID.HIDElementDescriptor { usage = (int)HID.GenericDesktop.Y, usagePage = HID.UsagePage.GenericDesktop, reportType = HID.HIDReportType.Input, reportId = 1, reportOffsetInBits = 16, reportSizeInBits = 16 },
new HID.HIDElementDescriptor { usage = (int)HID.Button.Primary, usagePage = HID.UsagePage.Button, reportType = HID.HIDReportType.Input, reportId = 1, reportOffsetInBits = 32, reportSizeInBits = 1 },
new HID.HIDElementDescriptor { usage = (int)HID.Button.Secondary, usagePage = HID.UsagePage.Button, reportType = HID.HIDReportType.Input, reportId = 1, reportOffsetInBits = 33, reportSizeInBits = 1 },
}
};
var hidDescriptorString = hidDescriptor.ToJson();
var utf8 = Encoding.UTF8.GetBytes(hidDescriptorString);
var utf8Length = utf8.Length;
if (commandPtr->payloadSizeInBytes < utf8Length)
return -utf8Length;
fixed(byte* utf8Ptr = utf8)
{
UnsafeUtility.MemCpy(commandPtr->payloadPtr, utf8Ptr, utf8Length);
}
return utf8Length;
}
return -1;
});
}
runtime.ReportNewInputDevice(
new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
manufacturer = "TestVendor",
product = "TestHID",
}.ToJson(), deviceId);
InputSystem.Update();
Assert.That(InputSystem.devices, Has.Count.EqualTo(1));
var device = InputSystem.devices[0];
Assert.That(device, Is.TypeOf<HID>());
Assert.That(device.description.interfaceName, Is.EqualTo(HID.kHIDInterface));
var hid = (HID)device;
Assert.That(hid.hidDescriptor.elements, Is.Not.Null);
Assert.That(hid.hidDescriptor.elements.Length, Is.EqualTo(4));
Assert.That(device.children, Has.Count.EqualTo(3));
Assert.That(device.children, Has.Exactly(1).With.Property("name").EqualTo("stick").And.TypeOf<StickControl>());
Assert.That(device.children, Has.Exactly(1).With.Property("name").EqualTo("trigger").And.TypeOf<ButtonControl>());
Assert.That(device.children, Has.Exactly(1).With.Property("name").EqualTo("button2").And.TypeOf<ButtonControl>());
}
// There may be vendor-specific stuff in an input report which we don't know how to use so the
// set of usable elements may be smaller than the set of actual elements in the report. The system
// is fine with state events that are larger than the state we store for a device as long as the
// format codes match. So, the total size of the state block for a device should correspond to
// only the range of elements we actually use.
[Test]
[Category("Devices")]
public void Devices_HIDsIgnoreUnusedExcessElements()
{
var hidDescriptor = new HID.HIDDeviceDescriptor
{
usage = (int)HID.GenericDesktop.MultiAxisController,
usagePage = HID.UsagePage.GenericDesktop,
inputReportSize = 36,
elements = new[]
{
new HID.HIDElementDescriptor { usage = (int)HID.GenericDesktop.X, usagePage = HID.UsagePage.GenericDesktop, reportType = HID.HIDReportType.Input, reportId = 1, reportSizeInBits = 32 },
new HID.HIDElementDescriptor { usage = 0x23435, usagePage = (HID.UsagePage) 0x544314, reportType = HID.HIDReportType.Input, reportId = 1, reportSizeInBits = 32 }
}
};
runtime.ReportNewInputDevice(new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
manufacturer = "TestVendor",
product = "TestHID",
capabilities = hidDescriptor.ToJson()
}.ToJson());
InputSystem.Update();
var device = InputSystem.devices.First(x => x is HID);
Assert.That(device.stateBlock.sizeInBits, Is.EqualTo(32));
}
[Test]
[Category("Devices")]
public void Devices_CanGetDescriptorFromHID()
{
var hidDescriptor = new HID.HIDDeviceDescriptor
{
usage = (int)HID.GenericDesktop.MultiAxisController,
usagePage = HID.UsagePage.GenericDesktop,
productId = 1234,
vendorId = 5678,
elements = new[]
{
new HID.HIDElementDescriptor { usage = (int)HID.GenericDesktop.X, usagePage = HID.UsagePage.GenericDesktop, reportType = HID.HIDReportType.Input, reportId = 1, reportSizeInBits = 32 },
}
};
runtime.ReportNewInputDevice(
new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
manufacturer = "TestVendor",
product = "TestHID",
capabilities = hidDescriptor.ToJson()
}.ToJson());
InputSystem.Update();
var device = (HID)InputSystem.devices.First(x => x is HID);
Assert.That(device.hidDescriptor.productId, Is.EqualTo(1234));
Assert.That(device.hidDescriptor.vendorId, Is.EqualTo(5678));
Assert.That(device.hidDescriptor.elements.Length, Is.EqualTo(1));
}
[Test]
[Category("Devices")]
public void Devices_HIDDevicesDifferingOnlyByUsageGetSeparateLayouts()
{
var hidDescriptor1 = new HID.HIDDeviceDescriptor
{
usage = (int)HID.GenericDesktop.MultiAxisController,
usagePage = HID.UsagePage.GenericDesktop,
productId = 1234,
vendorId = 5678,
elements = new[]
{
new HID.HIDElementDescriptor { usage = (int)HID.GenericDesktop.X, usagePage = HID.UsagePage.GenericDesktop, reportType = HID.HIDReportType.Input, reportId = 1, reportSizeInBits = 32 },
}
};
var hidDescriptor2 = hidDescriptor1;
hidDescriptor2.usage = (int)HID.GenericDesktop.Gamepad;
runtime.ReportNewInputDevice(
new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
manufacturer = "TestVendor",
product = "TestHID",
capabilities = hidDescriptor1.ToJson()
}.ToJson());
runtime.ReportNewInputDevice(
new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
manufacturer = "TestVendor",
product = "TestHID",
capabilities = hidDescriptor2.ToJson()
}.ToJson());
InputSystem.Update();
Assert.That(InputSystem.devices, Has.Count.EqualTo(2));
Assert.That(InputSystem.devices[0].layout, Is.Not.EqualTo(InputSystem.devices[1].layout));
}
[StructLayout(LayoutKind.Explicit)]
struct SimpleAxisState : IInputStateTypeInfo
{
[FieldOffset(0)] public byte reportId;
[FieldOffset(1)] public ushort rz;
[FieldOffset(3)] public short vz;
[FieldOffset(5)] public byte rx;
[FieldOffset(6)] public sbyte ry;
[FieldOffset(7)] public ushort vx;
[FieldOffset(9)] public short vy;
[FieldOffset(11)] public int x;
public FourCC format => new FourCC('H', 'I', 'D');
}
////change this...
// There's too little data in HID descriptors to reliably normalize and center HID axes. For example,
// a PS4 controller will report the left stick as X and Y, the right stick as Z and Rz, and the triggers
// as Rx and Ry. Each of these will be reported as a single byte with a [0..255] range. However, the
// triggers need to be centered at 0 (i.e. byte 0) and go from [0..1] whereas the left and right stick
// need to be centered at 0 (i.e. byte 127) and go from [-1..1]. From the data in the HID descriptor this
// is impossible to differentiate automatically and a different piece of hardware may well use the same
// axes in a different way.
//
// So we have to make a choice to go one way or the other. Given that the sticks are more important to
// work out of the box than the triggers, we lean that way and accept the triggers misbehaving (i.e.
// ending up being centered when half pressed). This way we can at least make joysticks behave correctly
// out of the box.
//
// The only reliable fix for a device is to put a layout in place that provides the missing data
// (i.e. how to interpret axis values) to the system.
[Test]
[Category("Devices")]
public void Devices_HIDAxesAreCenteredBetweenMinAndMax()
{
// Make up a HID that has both 16bit and 8bit axes in both signed and unsigned form.
var hidDescriptor =
new HID.HIDDeviceDescriptorBuilder(HID.GenericDesktop.MultiAxisController)
.StartReport(HID.HIDReportType.Input)
// 16bit [0..65535]
.AddElement(HID.GenericDesktop.Rz, 16).WithLogicalMinMax(0, 65535)
// 16bit [-32768..32767]
.AddElement(HID.GenericDesktop.Vz, 16).WithLogicalMinMax(-32768, 32767)
// 8bit [0..255]
.AddElement(HID.GenericDesktop.Rx, 8).WithLogicalMinMax(0, 255)
// 8bit [-128..127]
.AddElement(HID.GenericDesktop.Ry, 8).WithLogicalMinMax(-128, 127)
// 16bit [0..10000]
.AddElement(HID.GenericDesktop.Vx, 16).WithLogicalMinMax(0, 10000)
// 16bit [-10000..10000]
.AddElement(HID.GenericDesktop.Vy, 16).WithLogicalMinMax(-10000, 10000)
// 32bit [int min..int max]
.AddElement(HID.GenericDesktop.X, 32).WithLogicalMinMax(int.MinValue, int.MaxValue)
.Finish();
runtime.ReportNewInputDevice(
new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
manufacturer = "TestVendor",
product = "TestHID",
capabilities = hidDescriptor.ToJson()
}.ToJson());
InputSystem.Update();
var device = InputSystem.devices[0];
// Test lower bound.
InputSystem.QueueStateEvent(device, new SimpleAxisState
{
reportId = 1,
rz = ushort.MinValue,
vz = short.MinValue,
rx = byte.MinValue,
ry = sbyte.MinValue,
vx = 0,
vy = -10000,
x = int.MinValue
});
InputSystem.Update();
Assert.That(device["Rz"].ReadValueAsObject(), Is.EqualTo(-1).Within(0.0001));
Assert.That(device["Vz"].ReadValueAsObject(), Is.EqualTo(-1).Within(0.0001));
Assert.That(device["Rx"].ReadValueAsObject(), Is.EqualTo(-1).Within(0.0001));
Assert.That(device["Ry"].ReadValueAsObject(), Is.EqualTo(1).Within(0.0001)); // Inverted
Assert.That(device["Vx"].ReadValueAsObject(), Is.EqualTo(-1).Within(0.0001));
Assert.That(device["Vy"].ReadValueAsObject(), Is.EqualTo(1).Within(0.0001)); // Inverted
Assert.That(device["X"].ReadValueAsObject(), Is.EqualTo(-1).Within(0.0001));
// Test upper bound.
InputSystem.QueueStateEvent(device, new SimpleAxisState
{
reportId = 1,
rz = ushort.MaxValue,
vz = short.MaxValue,
rx = byte.MaxValue,
ry = sbyte.MaxValue,
vx = 10000,
vy = 10000,
x = int.MaxValue
});
InputSystem.Update();
Assert.That(device["Rz"].ReadValueAsObject(), Is.EqualTo(1).Within(0.0001));
Assert.That(device["Vz"].ReadValueAsObject(), Is.EqualTo(1).Within(0.0001));
Assert.That(device["Rx"].ReadValueAsObject(), Is.EqualTo(1).Within(0.0001));
Assert.That(device["Ry"].ReadValueAsObject(), Is.EqualTo(-1).Within(0.0001)); // Inverted
Assert.That(device["Vx"].ReadValueAsObject(), Is.EqualTo(1).Within(0.0001));
Assert.That(device["Vy"].ReadValueAsObject(), Is.EqualTo(-1).Within(0.0001)); // Inverted
Assert.That(device["X"].ReadValueAsObject(), Is.EqualTo(1).Within(0.0001));
// Test center.
InputSystem.QueueStateEvent(device, new SimpleAxisState
{
reportId = 1,
rz = ushort.MaxValue / 2,
vz = 0,
rx = byte.MaxValue / 2,
ry = 0,
vx = 10000 / 2,
vy = 0,
x = 0
});
InputSystem.Update();
Assert.That(device["Rz"].ReadValueAsObject(), Is.EqualTo(0).Within(0.0001));
Assert.That(device["Vz"].ReadValueAsObject(), Is.EqualTo(0).Within(0.0001));
////FIXME: these accumulate some rather large errors
Assert.That(device["Rx"].ReadValueAsObject(), Is.EqualTo(0).Within(0.004));
Assert.That(device["Ry"].ReadValueAsObject(), Is.EqualTo(0).Within(0.004));
Assert.That(device["Vx"].ReadValueAsObject(), Is.EqualTo(0).Within(0.0001));
Assert.That(device["Vy"].ReadValueAsObject(), Is.EqualTo(0).Within(0.0001));
Assert.That(device["X"].ReadValueAsObject(), Is.EqualTo(0).Within(0.0001));
}
// https://github.com/Unity-Technologies/InputSystem/issues/134
[Test]
[Category("Devices")]
public void Devices_HIDAxisLimits_DoNotUseDecimalFormatOfCurrentCulture()
{
var oldCulture = Thread.CurrentThread.CurrentCulture;
try
{
// French locale uses comma as decimal separator.
Thread.CurrentThread.CurrentCulture = new CultureInfo("fr-FR");
var hidDescriptor =
new HID.HIDDeviceDescriptorBuilder(HID.GenericDesktop.MultiAxisController)
.StartReport(HID.HIDReportType.Input)
.AddElement(HID.GenericDesktop.X, 16).WithLogicalMinMax(0, 65535).Finish();
runtime.ReportNewInputDevice(
new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
manufacturer = "TestVendor",
product = "TestHID",
capabilities = hidDescriptor.ToJson()
}.ToJson());
Assert.That(() => InputSystem.Update(), Throws.Nothing);
}
finally
{
Thread.CurrentThread.CurrentCulture = oldCulture;
}
}
// Would be nicer to just call them "HID" but ATM the layout builder mechanism doesn't have
// direct control over the naming.
[Test]
[Category("Devices")]
public void Devices_HIDsWithoutProductName_AreNamedByTheirVendorAndProductIDAndUsageName()
{
var hidDescriptor = new HID.HIDDeviceDescriptor
{
usage = (int)HID.GenericDesktop.MultiAxisController,
usagePage = HID.UsagePage.GenericDesktop,
vendorId = 0x1234,
productId = 0x5678,
inputReportSize = 4,
elements = new[]
{
new HID.HIDElementDescriptor { usage = (int)HID.GenericDesktop.X, usagePage = HID.UsagePage.GenericDesktop, reportType = HID.HIDReportType.Input, reportId = 1, reportSizeInBits = 32 },
}
};
runtime.ReportNewInputDevice(
new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
capabilities = hidDescriptor.ToJson()
}.ToJson());
InputSystem.Update();
var device = (HID)InputSystem.devices.First(x => x is HID);
Assert.That(device.name, Is.EqualTo("1234-5678 MultiAxisController"));
}
[Test]
[Category("Devices")]
public void Devices_HIDDescriptorSurvivesReload()
{
var hidDescriptor = new HID.HIDDeviceDescriptor
{
usage = (int)HID.GenericDesktop.MultiAxisController,
usagePage = HID.UsagePage.GenericDesktop,
vendorId = 0x1234,
productId = 0x5678,
inputReportSize = 4,
elements = new[]
{
new HID.HIDElementDescriptor { usage = (int)HID.GenericDesktop.X, usagePage = HID.UsagePage.GenericDesktop, reportType = HID.HIDReportType.Input, reportId = 1, reportSizeInBits = 32 },
}
};
runtime.ReportNewInputDevice(
new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
capabilities = hidDescriptor.ToJson()
}.ToJson());
InputSystem.Update();
InputSystem.SaveAndReset();
InputSystem.Restore();
var hid = (HID)InputSystem.devices.First(x => x is HID);
Assert.That(hid.hidDescriptor.vendorId, Is.EqualTo(0x1234));
Assert.That(hid.hidDescriptor.productId, Is.EqualTo(0x5678));
}
[Test]
[Category("Devices")]
public unsafe void Devices_SupportsHIDHatSwitches()
{
var hidDescriptor = new HID.HIDDeviceDescriptor
{
usage = (int)HID.GenericDesktop.MultiAxisController,
usagePage = HID.UsagePage.GenericDesktop,
vendorId = 0x1234,
productId = 0x5678,
inputReportSize = 4,
elements = new[]
{
new HID.HIDElementDescriptor
{
usage = (int)HID.GenericDesktop.HatSwitch,
usagePage = HID.UsagePage.GenericDesktop,
reportType = HID.HIDReportType.Input,
reportId = 1,
reportSizeInBits = 4,
reportOffsetInBits = 0,
logicalMin = 0,
logicalMax = 7, // This combination of min/max means that 8 (given we have 4 bits) is out of range and thus the null state.
physicalMin = 0,
physicalMax = 315,
flags = HID.HIDElementFlags.NullState
}
}
};
runtime.ReportNewInputDevice(
new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
capabilities = hidDescriptor.ToJson()
}.ToJson());
InputSystem.Update();
var hid = (HID)InputSystem.devices.First(x => x is HID);
Assert.That(hid["hat"], Is.TypeOf<DpadControl>());
// Assert that default state is set correctly.
Assert.That(hid["hat/up"].ReadValueAsObject(), Is.EqualTo(0).Within(0.00001));
Assert.That(hid["hat/down"].ReadValueAsObject(), Is.EqualTo(0).Within(0.00001));
Assert.That(hid["hat/left"].ReadValueAsObject(), Is.EqualTo(0).Within(0.00001));
Assert.That(hid["hat/right"].ReadValueAsObject(), Is.EqualTo(0).Within(0.00001));
using (StateEvent.From(hid, out var eventPtr))
{
var stateData = (byte*)StateEvent.From(eventPtr)->state;
const int kNull = 8;
const int kUp = 0;
const int kUpRight = 1;
const int kRight = 2;
const int kRightDown = 3;
const int kDown = 4;
const int kDownLeft = 5;
const int kLeft = 6;
const int kLeftUp = 7;
stateData[0] = kNull;
InputSystem.QueueEvent(eventPtr);
InputSystem.Update();
Assert.That(hid["hat"].ReadValueAsObject(), Is.EqualTo(Vector2.zero).Using(Vector2EqualityComparer.Instance));
stateData[0] = kUp;
InputSystem.QueueEvent(eventPtr);
InputSystem.Update();
Assert.That(hid["hat"].ReadValueAsObject(), Is.EqualTo(Vector2.up).Using(Vector2EqualityComparer.Instance));
stateData[0] = kUpRight;
InputSystem.QueueEvent(eventPtr);
InputSystem.Update();
Assert.That(hid["hat"].ReadValueAsObject(), Is.EqualTo((Vector2.up + Vector2.right).normalized).Using(Vector2EqualityComparer.Instance));
stateData[0] = kRight;
InputSystem.QueueEvent(eventPtr);
InputSystem.Update();
Assert.That(hid["hat"].ReadValueAsObject(), Is.EqualTo(Vector2.right).Using(Vector2EqualityComparer.Instance));
stateData[0] = kRightDown;
InputSystem.QueueEvent(eventPtr);
InputSystem.Update();
Assert.That(hid["hat"].ReadValueAsObject(), Is.EqualTo((Vector2.right + Vector2.down).normalized).Using(Vector2EqualityComparer.Instance));
stateData[0] = kDown;
InputSystem.QueueEvent(eventPtr);
InputSystem.Update();
Assert.That(hid["hat"].ReadValueAsObject(), Is.EqualTo(Vector2.down).Using(Vector2EqualityComparer.Instance));
stateData[0] = kDownLeft;
InputSystem.QueueEvent(eventPtr);
InputSystem.Update();
Assert.That(hid["hat"].ReadValueAsObject(), Is.EqualTo((Vector2.down + Vector2.left).normalized).Using(Vector2EqualityComparer.Instance));
stateData[0] = kLeft;
InputSystem.QueueEvent(eventPtr);
InputSystem.Update();
Assert.That(hid["hat"].ReadValueAsObject(), Is.EqualTo(Vector2.left).Using(Vector2EqualityComparer.Instance));
stateData[0] = kLeftUp;
InputSystem.QueueEvent(eventPtr);
InputSystem.Update();
Assert.That(hid["hat"].ReadValueAsObject(), Is.EqualTo((Vector2.left + Vector2.up).normalized).Using(Vector2EqualityComparer.Instance));
}
}
[Test]
[Category("Devices")]
public void Devices_SupportsMultipleHIDHatSwitches()
{
var hidDescriptor = new HID.HIDDeviceDescriptor
{
usage = (int)HID.GenericDesktop.MultiAxisController,
usagePage = HID.UsagePage.GenericDesktop,
vendorId = 0x1234,
productId = 0x5678,
inputReportSize = 4,
elements = new[]
{
new HID.HIDElementDescriptor
{
usage = (int)HID.GenericDesktop.HatSwitch,
usagePage = HID.UsagePage.GenericDesktop,
reportType = HID.HIDReportType.Input,
reportId = 1,
reportSizeInBits = 4,
reportOffsetInBits = 0,
logicalMin = 0,
logicalMax = 7,
physicalMin = 0,
physicalMax = 315,
flags = HID.HIDElementFlags.NullState
},
new HID.HIDElementDescriptor
{
usage = (int)HID.GenericDesktop.HatSwitch,
usagePage = HID.UsagePage.GenericDesktop,
reportType = HID.HIDReportType.Input,
reportId = 1,
reportSizeInBits = 4,
reportOffsetInBits = 4,
logicalMin = 0,
logicalMax = 7,
physicalMin = 0,
physicalMax = 315,
flags = HID.HIDElementFlags.NullState
}
}
};
runtime.ReportNewInputDevice(
new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
capabilities = hidDescriptor.ToJson()
}.ToJson());
InputSystem.Update();
var hid = (HID)InputSystem.devices.First(x => x is HID);
Assert.That(hid["hat"], Is.TypeOf<DpadControl>());
Assert.That(hid["hat1"], Is.TypeOf<DpadControl>());
Assert.That(hid["hat"].stateBlock.byteOffset, Is.EqualTo(0));
Assert.That(hid["hat"].stateBlock.bitOffset, Is.EqualTo(0));
Assert.That(hid["hat1"].stateBlock.byteOffset, Is.EqualTo(0));
Assert.That(hid["hat1"].stateBlock.bitOffset, Is.EqualTo(4));
}
[Test]
[Category("Devices")]
[Ignore("TODO")]
public void TODO_Devices_SupportsHIDDpads()
{
Assert.Fail();
}
[Test]
[Category("Devices")]
public void Devices_GenericHIDJoystickIsTurnedIntoJoystick()
{
var hidDescriptor = new HID.HIDDeviceDescriptor
{
usage = (int)HID.GenericDesktop.Joystick,
usagePage = HID.UsagePage.GenericDesktop,
vendorId = 0x1234,
productId = 0x5678,
inputReportSize = 4,
elements = new[]
{
// 16bit X and Y axes.
new HID.HIDElementDescriptor { usage = (int)HID.GenericDesktop.X, usagePage = HID.UsagePage.GenericDesktop, reportType = HID.HIDReportType.Input, reportId = 1, reportOffsetInBits = 0, reportSizeInBits = 16 },
new HID.HIDElementDescriptor { usage = (int)HID.GenericDesktop.Y, usagePage = HID.UsagePage.GenericDesktop, reportType = HID.HIDReportType.Input, reportId = 1, reportOffsetInBits = 16, reportSizeInBits = 16 },
}
};
runtime.ReportNewInputDevice(
new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
capabilities = hidDescriptor.ToJson()
}.ToJson());
InputSystem.Update();
Assert.That(InputSystem.devices, Has.Count.EqualTo(1));
var device = InputSystem.devices[0];
Assert.That(device, Is.TypeOf<Joystick>());
}
// Based on the HID spec, we can't make *any* guarantees on where a HID-only gamepad puts its axes
// and buttons. Generic buttons in HID are simply numbered with no specific meaning and axes equally
// carry no guarantees about how they are arranged on a device.
//
// This means we cannot turn a HID-only gamepad into a `Gamepad` instance and make any guarantees
// about buttonSouth etc or leftStick etc. So, we opt to not turn HID-only gamepads into gamepads at
// all but rather turn them into joysticks instead.
[Test]
[Category("Devices")]
public void Devices_GenericHIDGamepadIsTurnedIntoJoystick()
{
var hidDescriptor = new HID.HIDDeviceDescriptor
{
usage = (int)HID.GenericDesktop.Gamepad,
usagePage = HID.UsagePage.GenericDesktop,
vendorId = 0x1234,
productId = 0x5678,
inputReportSize = 4,
elements = new[]
{
// 16bit X and Y axes.
new HID.HIDElementDescriptor { usage = (int)HID.GenericDesktop.X, usagePage = HID.UsagePage.GenericDesktop, reportType = HID.HIDReportType.Input, reportId = 1, reportOffsetInBits = 0, reportSizeInBits = 16 },
new HID.HIDElementDescriptor { usage = (int)HID.GenericDesktop.Y, usagePage = HID.UsagePage.GenericDesktop, reportType = HID.HIDReportType.Input, reportId = 1, reportOffsetInBits = 16, reportSizeInBits = 16 },
}
};
runtime.ReportNewInputDevice(
new InputDeviceDescription
{
interfaceName = HID.kHIDInterface,
capabilities = hidDescriptor.ToJson()
}.ToJson());
InputSystem.Update();
Assert.That(InputSystem.devices, Has.Count.EqualTo(1));
var device = InputSystem.devices[0];
Assert.That(device, Is.TypeOf<Joystick>());
}
[Test]
[Category("Devices")]
public void Devices_GenericHIDConvertsXAndYUsagesToStickControl()
{
var hidDescriptor = new HID.HIDDeviceDescriptor
{
usage = (int)HID.GenericDesktop.Joystick,
usagePage = HID.UsagePage.GenericDesktop,