mirror of
https://github.com/gnif/LookingGlass.git
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137 lines
4.0 KiB
C++
137 lines
4.0 KiB
C++
/**
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* Looking Glass
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* Copyright © 2017-2026 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#pragma once
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#include "CPipeEndpoint.h"
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#include "InputPipeProtocol.h"
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#include "input/IInputSink.h"
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#include <atomic>
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#include <stddef.h>
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#include <stdint.h>
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class CInputPipeServer : public IInputSink, private IPipeEndpointHandler
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{
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private:
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static constexpr size_t QUEUE_LENGTH = 128;
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static constexpr size_t MOTION_COALESCE_THRESHOLD = QUEUE_LENGTH / 2;
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static constexpr DWORD STATISTICS_INTERVAL_MS = 5000;
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struct QueueItem
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{
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KVMFRInputPayload payload;
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uint64_t state;
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LGInputPipeMessageType type;
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bool pureMotion;
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};
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enum class MouseMode
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{
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NONE,
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RELATIVE_INPUT,
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ABSOLUTE_INPUT,
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};
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CPipeEndpoint m_endpoint;
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// Odd states are available. Endpoint changes and resyncs advance the state.
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std::atomic<uint64_t> m_state { 0 };
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SRWLOCK m_queueLock = SRWLOCK_INIT;
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SRWLOCK m_connectionLock = SRWLOCK_INIT;
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HANDLE m_stopEvent = nullptr;
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HANDLE m_queueEvent = nullptr;
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HANDLE m_thread = nullptr;
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QueueItem m_queue[QUEUE_LENGTH] = {};
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size_t m_queueHead = 0;
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size_t m_queueCount = 0;
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uint64_t m_sequence = 0;
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MouseMode m_mouseMode = MouseMode::NONE;
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uint16_t m_absoluteX = 0;
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uint16_t m_absoluteY = 0;
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uint32_t m_relativeButtons = 0;
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uint32_t m_absoluteButtons = 0;
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uint64_t m_statEnqueued = 0;
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uint64_t m_statRelativeCoalesced = 0;
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uint64_t m_statAbsoluteCoalesced = 0;
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uint64_t m_statResyncs = 0;
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uint64_t m_statResyncDiscarded = 0;
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size_t m_statQueueHighWater = 0;
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uint64_t m_statSent = 0;
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uint64_t m_statStale = 0;
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uint64_t m_statWriteFailed = 0;
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uint64_t m_statSlowWrites = 0;
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int64_t m_statWriteTicks = 0;
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int64_t m_statMaxWriteTicks = 0;
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ULONGLONG m_lastStatistics = 0;
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LARGE_INTEGER m_performanceFrequency = {};
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bool QueueLocked(LGInputPipeMessageType type,
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const KVMFRInputPayload& payload, bool pureMotion);
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bool QueueRawLocked(LGInputPipeMessageType type,
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const KVMFRInputPayload& payload, bool pureMotion);
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bool QueueResetLocked();
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void ResyncLocked();
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bool Pop(QueueItem& item);
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bool Send(const QueueItem& item);
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void Invalidate(uint64_t state, bool requireMatch);
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void LogStatistics();
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void Thread();
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static DWORD WINAPI ThreadProc(void * context);
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void OnPipeConnected() override;
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void OnPipeDisconnected() override;
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bool OnPipeMessage(const void * message, size_t size) override;
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public:
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~CInputPipeServer() { DeInit(); }
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bool Init();
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void DeInit();
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uint64_t GetState() const override
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{
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return m_state.load(std::memory_order_acquire);
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}
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bool SendMouseRelative(
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_In_ int32_t deltaX,
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_In_ int32_t deltaY,
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_In_ int32_t wheel,
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_In_ uint32_t buttons) override;
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bool SendMouseAbsolute(
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_In_range_(0, LG_INPUT_MOUSE_ABSOLUTE_MAX) uint16_t x,
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_In_range_(0, LG_INPUT_MOUSE_ABSOLUTE_MAX) uint16_t y,
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_In_ int32_t wheel,
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_In_ uint32_t buttons) override;
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bool SendKeyboard(
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_In_ uint8_t modifiers,
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_In_reads_(LG_INPUT_KEYBOARD_KEY_COUNT) const uint8_t * keys) override;
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bool Reset() override;
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};
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extern CInputPipeServer g_inputPipeServer;
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