mirror of
https://github.com/gnif/LookingGlass.git
synced 2026-08-09 08:41:31 +00:00
ced2fb531e
Move named pipe writes off the LGMP input worker so a stalled LGInput endpoint cannot block queue draining or lease maintenance. Coalesce motion only under queue pressure while preserving mode, button, wheel, and keyboard transitions. Reset HID state after discontinuities and carry all 32 mouse button bits through the pipe and HID reports.
120 lines
3.4 KiB
C++
120 lines
3.4 KiB
C++
/**
|
|
* Looking Glass
|
|
* Copyright © 2017-2026 The Looking Glass Authors
|
|
* https://looking-glass.io
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the Free
|
|
* Software Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc., 59
|
|
* Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "CPipeEndpoint.h"
|
|
#include "InputPipeProtocol.h"
|
|
#include "input/IInputSink.h"
|
|
|
|
#include <atomic>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
class CInputPipeServer : public IInputSink, private IPipeEndpointHandler
|
|
{
|
|
private:
|
|
static constexpr size_t QUEUE_LENGTH = 128;
|
|
static constexpr size_t MOTION_COALESCE_THRESHOLD = QUEUE_LENGTH / 2;
|
|
|
|
struct QueueItem
|
|
{
|
|
KVMFRInputPayload payload;
|
|
uint64_t state;
|
|
LGInputPipeMessageType type;
|
|
bool pureMotion;
|
|
};
|
|
|
|
enum class MouseMode
|
|
{
|
|
NONE,
|
|
RELATIVE_INPUT,
|
|
ABSOLUTE_INPUT,
|
|
};
|
|
|
|
CPipeEndpoint m_endpoint;
|
|
|
|
// Odd states are available. Endpoint changes and resyncs advance the state.
|
|
std::atomic<uint64_t> m_state { 0 };
|
|
|
|
SRWLOCK m_queueLock = SRWLOCK_INIT;
|
|
SRWLOCK m_connectionLock = SRWLOCK_INIT;
|
|
HANDLE m_stopEvent = nullptr;
|
|
HANDLE m_queueEvent = nullptr;
|
|
HANDLE m_thread = nullptr;
|
|
|
|
QueueItem m_queue[QUEUE_LENGTH] = {};
|
|
size_t m_queueHead = 0;
|
|
size_t m_queueCount = 0;
|
|
uint64_t m_sequence = 0;
|
|
|
|
MouseMode m_mouseMode = MouseMode::NONE;
|
|
bool m_absoluteValid = false;
|
|
uint16_t m_absoluteX = 0;
|
|
uint16_t m_absoluteY = 0;
|
|
uint32_t m_relativeButtons = 0;
|
|
uint32_t m_absoluteButtons = 0;
|
|
|
|
bool QueueLocked(LGInputPipeMessageType type,
|
|
const KVMFRInputPayload& payload, bool pureMotion);
|
|
bool QueueRawLocked(LGInputPipeMessageType type,
|
|
const KVMFRInputPayload& payload, bool pureMotion);
|
|
bool QueueResetLocked();
|
|
void ResyncLocked();
|
|
bool Pop(QueueItem& item);
|
|
bool Send(const QueueItem& item);
|
|
void Invalidate(uint64_t state, bool requireMatch);
|
|
void Thread();
|
|
|
|
static DWORD WINAPI ThreadProc(void * context);
|
|
|
|
void OnPipeConnected() override;
|
|
void OnPipeDisconnected() override;
|
|
bool OnPipeMessage(const void * message, size_t size) override;
|
|
|
|
public:
|
|
~CInputPipeServer() { DeInit(); }
|
|
|
|
bool Init();
|
|
void DeInit();
|
|
|
|
uint64_t GetState() const override
|
|
{
|
|
return m_state.load(std::memory_order_acquire);
|
|
}
|
|
|
|
bool SendMouseRelative(
|
|
_In_ int32_t deltaX,
|
|
_In_ int32_t deltaY,
|
|
_In_ int32_t wheel,
|
|
_In_ uint32_t buttons) override;
|
|
bool SendMouseAbsolute(
|
|
_In_range_(0, LG_INPUT_MOUSE_ABSOLUTE_MAX) uint16_t x,
|
|
_In_range_(0, LG_INPUT_MOUSE_ABSOLUTE_MAX) uint16_t y,
|
|
_In_ int32_t wheel,
|
|
_In_ uint32_t buttons) override;
|
|
bool SendKeyboard(
|
|
_In_ uint8_t modifiers,
|
|
_In_reads_(LG_INPUT_KEYBOARD_KEY_COUNT) const uint8_t * keys) override;
|
|
bool Reset() override;
|
|
};
|
|
|
|
extern CInputPipeServer g_inputPipeServer;
|