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[idd] input: add mouse and keyboard IPC messages

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Replace raw HID report forwarding with typed absolute mouse, relative
mouse, and keyboard messages.

Expose absolute and relative modes as separate Mouse collections because
Windows MouHID requires one X/Y motion mode per mouse device.
This commit is contained in:
Geoffrey McRae
2026-08-08 19:39:17 +10:00
parent 241ab3fad2
commit 04fd31219c
7 changed files with 288 additions and 29 deletions
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64
idd/LGCommon/InputPipeProtocol.h
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@@ -27,15 +27,65 @@ static constexpr wchar_t LG_INPUT_PIPE_NAME[] =
L"\\\\.\\pipe\\LookingGlassIDDInput";
static constexpr uint32_t LG_INPUT_PIPE_MAGIC = 0x5049474c;
static constexpr uint16_t LG_INPUT_PIPE_VERSION = 1;
static constexpr size_t LG_INPUT_PIPE_MAX_REPORT_SIZE = 64;
static constexpr uint16_t LG_INPUT_PIPE_VERSION = 2;
static constexpr size_t LG_INPUT_PIPE_MAX_PAYLOAD_SIZE = 64;
static constexpr uint8_t LG_INPUT_MOUSE_BUTTON_MASK = 0x1f;
static constexpr uint16_t LG_INPUT_MOUSE_ABSOLUTE_MAX = 32767;
static constexpr int8_t LG_INPUT_MOUSE_WHEEL_MIN = -127;
static constexpr size_t LG_INPUT_KEYBOARD_KEY_COUNT = 6;
static constexpr uint8_t LG_INPUT_KEYBOARD_USAGE_MAX = 0xe7;
enum LGInputMouseButton : uint8_t
{
LG_INPUT_MOUSE_BUTTON_LEFT = 1 << 0,
LG_INPUT_MOUSE_BUTTON_RIGHT = 1 << 1,
LG_INPUT_MOUSE_BUTTON_MIDDLE = 1 << 2,
LG_INPUT_MOUSE_BUTTON_BACK = 1 << 3,
LG_INPUT_MOUSE_BUTTON_FORWARD = 1 << 4,
};
enum LGInputKeyboardModifier : uint8_t
{
LG_INPUT_KEYBOARD_MODIFIER_LEFT_CONTROL = 1 << 0,
LG_INPUT_KEYBOARD_MODIFIER_LEFT_SHIFT = 1 << 1,
LG_INPUT_KEYBOARD_MODIFIER_LEFT_ALT = 1 << 2,
LG_INPUT_KEYBOARD_MODIFIER_LEFT_GUI = 1 << 3,
LG_INPUT_KEYBOARD_MODIFIER_RIGHT_CONTROL = 1 << 4,
LG_INPUT_KEYBOARD_MODIFIER_RIGHT_SHIFT = 1 << 5,
LG_INPUT_KEYBOARD_MODIFIER_RIGHT_ALT = 1 << 6,
LG_INPUT_KEYBOARD_MODIFIER_RIGHT_GUI = 1 << 7,
};
enum LGInputPipeMessageType : uint16_t
{
LG_INPUT_PIPE_MESSAGE_REPORT = 1,
LG_INPUT_PIPE_MESSAGE_MOUSE_ABSOLUTE = 1,
LG_INPUT_PIPE_MESSAGE_MOUSE_RELATIVE = 2,
LG_INPUT_PIPE_MESSAGE_KEYBOARD = 3,
};
#pragma pack(push, 1)
struct LGInputPipeMouseRelative
{
uint8_t buttons;
int16_t deltaX;
int16_t deltaY;
int8_t wheel;
};
struct LGInputPipeMouseAbsolute
{
uint8_t buttons;
uint16_t x;
uint16_t y;
int8_t wheel;
};
struct LGInputPipeKeyboard
{
uint8_t modifiers;
uint8_t keys[LG_INPUT_KEYBOARD_KEY_COUNT];
};
struct LGInputPipeMessage
{
uint32_t magic;
@@ -43,9 +93,15 @@ struct LGInputPipeMessage
uint16_t type;
uint32_t payloadSize;
uint64_t sequence;
uint8_t payload[LG_INPUT_PIPE_MAX_REPORT_SIZE];
uint8_t payload[LG_INPUT_PIPE_MAX_PAYLOAD_SIZE];
};
#pragma pack(pop)
static_assert(sizeof(LGInputPipeMouseRelative) == 6,
"LGInputPipeMouseRelative wire layout changed");
static_assert(sizeof(LGInputPipeMouseAbsolute) == 6,
"LGInputPipeMouseAbsolute wire layout changed");
static_assert(sizeof(LGInputPipeKeyboard) == 7,
"LGInputPipeKeyboard wire layout changed");
static_assert(sizeof(LGInputPipeMessage) == 84,
"LGInputPipeMessage wire layout changed");