Initial community commit

Src/external_dependencies/openmpt-trunk/pluginBridge/Bridge.h

@@ -0,0 +1,104 @@
+/*
+ * Bridge.h
+ * --------
+ * Purpose: VST plugin bridge (plugin side)
+ * Notes  : (currently none)
+ * Authors: OpenMPT Devs
+ * The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
+ */
+
+
+#pragma once
+
+#include "openmpt/all/BuildSettings.hpp"
+#include <atomic>
+
+#include "BridgeCommon.h"
+
+
+OPENMPT_NAMESPACE_BEGIN
+
+class PluginBridge : private BridgeCommon
+{
+public:
+	static bool m_fullMemDump;
+
+protected:
+	enum TimerID : UINT
+	{
+		TIMER_IDLE = 1,
+	};
+
+	static PluginBridge *m_latestInstance;
+	static ATOM m_editorClassAtom;
+
+	// Plugin
+	Vst::AEffect *m_nativeEffect = nullptr;
+	HMODULE m_library = nullptr;
+	HWND m_window = nullptr;
+	int m_windowWidth = 0, m_windowHeight = 0;
+	std::atomic<bool> m_isProcessing = false;
+
+	// Static memory for host-to-plugin pointers
+	union
+	{
+		Vst::VstSpeakerArrangement speakerArrangement;
+		char name[256];
+	} m_host2PlugMem;
+	std::vector<char> m_eventCache;       // Cached VST (MIDI) events
+	std::vector<char> m_fileSelectCache;  // Cached VstFileSelect data
+
+	// Pointers to sample data
+	std::vector<void *> m_sampleBuffers;
+	uint32 m_mixBufSize = 0;
+
+	HANDLE m_audioThread = nullptr;
+	Event m_sigThreadExit;  // Signal to kill audio thread
+
+	bool m_needIdle = false;  // Plugin needs idle time
+
+public:
+	PluginBridge(const wchar_t *memName, HANDLE otherProcess);
+	~PluginBridge();
+	
+	PluginBridge(const PluginBridge&) = delete;
+	PluginBridge &operator=(const PluginBridge&) = delete;
+
+	static void MainLoop(TCHAR *argv[]);
+
+protected:
+	void RequestDelete();
+
+	bool SendToHost(BridgeMessage &sendMsg);
+
+	void UpdateEffectStruct();
+	void CreateProcessingFile(std::vector<char> &dispatchData);
+
+	void ParseNextMessage(int msgID);
+	void NewInstance(NewInstanceMsg &msg);
+	void InitBridge(InitMsg &msg);
+	void DispatchToPlugin(DispatchMsg &msg);
+	void SetParameter(ParameterMsg &msg);
+	void GetParameter(ParameterMsg &msg);
+	void AutomateParameters();
+	void Process();
+	void ProcessReplacing();
+	void ProcessDoubleReplacing();
+	intptr_t DispatchToHost(Vst::VstOpcodeToHost opcode, int32 index, intptr_t value, void *ptr, float opt);
+	void SendErrorMessage(const wchar_t *str);
+	intptr_t Dispatch(Vst::VstOpcodeToPlugin opcode, int32 index, intptr_t value, void *ptr, float opt);
+
+	template<typename buf_t>
+	int32 BuildProcessPointers(buf_t **(&inPointers), buf_t **(&outPointers));
+
+	static DWORD WINAPI AudioThread(LPVOID param);
+	void AudioThread();
+
+	static LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
+	static void CALLBACK IdleTimerProc(HWND hwnd, UINT message, UINT_PTR idTimer, DWORD dwTime);
+
+	static intptr_t VSTCALLBACK MasterCallback(Vst::AEffect *effect, Vst::VstOpcodeToHost, int32 index, intptr_t value, void *ptr, float opt);
+};
+
+
+OPENMPT_NAMESPACE_END