Me and Nakeee created a null DSP device, supported in both Windows and linux (tested). Framerate boost and less DSound/LibAO errors. Pending work: Clean up UCodes and create something more...null. We could also hack into the HW Audio Interface (would be actual null device). Also screws up a bit of Wind Waker RTC (awesome day/night transition in save selection menu. 80FPS in save selection menu, 120FPS in logos.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@694 8ced0084-cf51-0410-be5f-012b33b47a6e
2025-07-21 05:09:34 -06:00 · 2008-09-25 18:45:53 +00:00
parent c31cba8f0b
commit 53b4dda6c7
26 changed files with 3121 additions and 15 deletions
--- a/Source/Plugins/Plugin_DSP_NULL/Src/main.cpp
+++ b/Source/Plugins/Plugin_DSP_NULL/Src/main.cpp
@ -0,0 +1,203 @@
+// Copyright (C) 2003-2008 Dolphin Project.
+
+// 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, version 2.0.
+
+// 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 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official SVN repository and contact information can be found at
+// http://code.google.com/p/dolphin-emu/
+
+//#include "Common.h"
+#include "ChunkFile.h"
+#include "pluginspecs_dsp.h"
+
+#include "DSPHandler.h"
+
+DSPInitialize g_dspInitialize;
+u8* g_pMemory;
+
+struct DSPState
+{
+	u32 CPUMailbox;
+	bool CPUMailbox_Written[2];
+
+	u32 DSPMailbox;
+	bool DSPMailbox_Read[2];
+
+	DSPState()
+	{
+		CPUMailbox = 0x00000000;
+		CPUMailbox_Written[0] = false;
+		CPUMailbox_Written[1] = false;
+
+		DSPMailbox = 0x00000000;
+		DSPMailbox_Read[0] = true;
+		DSPMailbox_Read[1] = true;
+	}
+};
+
+DSPState g_dspState;
+
+#ifdef _WIN32
+HINSTANCE g_hInstance = NULL;
+
+BOOL APIENTRY DllMain(HINSTANCE hinstDLL, // DLL module handle
+		DWORD dwReason, // reason called
+		LPVOID lpvReserved) // reserved
+{
+	switch (dwReason)
+	{
+	    case DLL_PROCESS_ATTACH:
+		    break;
+
+	    case DLL_PROCESS_DETACH:
+		    break;
+
+	    default:
+		    break;
+	}
+
+	g_hInstance = hinstDLL;
+	return(TRUE);
+}
+
+#endif
+
+void DllDebugger(HWND _hParent)
+{
+    // TODO: implement
+}
+
+void GetDllInfo(PLUGIN_INFO* _PluginInfo)
+{
+	_PluginInfo->Version = 0x0100;
+	_PluginInfo->Type = PLUGIN_TYPE_DSP;
+#ifdef DEBUGFAST 
+	sprintf(_PluginInfo->Name, "Dolphin DSP-NULL Plugin (DebugFast) ");
+#else
+#ifndef _DEBUG
+	sprintf(_PluginInfo->Name, "Dolphin DSP-NULL Plugin ");
+#else
+	sprintf(_PluginInfo->Name, "Dolphin DSP-NULL Plugin (Debug) ");
+#endif
+#endif
+}
+
+void DllAbout(HWND _hParent)
+{
+}
+
+void DllConfig(HWND _hParent)
+{
+}
+
+void DSP_Initialize(DSPInitialize _dspInitialize)
+{
+    g_dspInitialize = _dspInitialize;
+
+    g_pMemory = g_dspInitialize.pGetMemoryPointer(0);
+
+    CDSPHandler::CreateInstance();
+}
+
+void DSP_Shutdown()
+{
+
+	CDSPHandler::Destroy();
+}
+
+void DSP_DoState(unsigned char **ptr, int mode) {
+	PointerWrap p(ptr, mode);
+}
+
+unsigned short DSP_ReadMailboxHigh(bool _CPUMailbox)
+{
+	if (_CPUMailbox)
+	{
+		return (g_dspState.CPUMailbox >> 16) & 0xFFFF;
+	}
+	else
+	{
+		return CDSPHandler::GetInstance().AccessMailHandler().ReadDSPMailboxHigh();
+	}
+}
+
+unsigned short DSP_ReadMailboxLow(bool _CPUMailbox)
+{
+	if (_CPUMailbox)
+	{
+		return g_dspState.CPUMailbox & 0xFFFF;
+	}
+	else
+	{
+		return CDSPHandler::GetInstance().AccessMailHandler().ReadDSPMailboxLow();
+	}
+}
+
+void Update_DSP_WriteRegister()
+{
+	// check if the whole message is complete and if we can send it
+	if (g_dspState.CPUMailbox_Written[0] && g_dspState.CPUMailbox_Written[1])
+	{
+		CDSPHandler::GetInstance().SendMailToDSP(g_dspState.CPUMailbox);
+		g_dspState.CPUMailbox_Written[0] = g_dspState.CPUMailbox_Written[1] = false;
+		g_dspState.CPUMailbox = 0; // Mail sent so clear it to show that it is progressed
+	}
+}
+
+void DSP_WriteMailboxHigh(bool _CPUMailbox, unsigned short _Value)
+{
+	if (_CPUMailbox)
+	{
+		g_dspState.CPUMailbox = (g_dspState.CPUMailbox & 0xFFFF) | (_Value << 16);
+		g_dspState.CPUMailbox_Written[0] = true;
+
+		Update_DSP_WriteRegister();
+	}
+	else
+	{
+		PanicAlert("CPU can't write %08x to DSP mailbox", _Value);
+	}
+}
+
+void DSP_WriteMailboxLow(bool _CPUMailbox, unsigned short _Value)
+{
+	if (_CPUMailbox)
+	{
+		g_dspState.CPUMailbox = (g_dspState.CPUMailbox & 0xFFFF0000) | _Value;
+		g_dspState.CPUMailbox_Written[1] = true;
+
+		Update_DSP_WriteRegister();
+	}
+	else
+	{
+		PanicAlert("CPU can't write %08x to DSP mailbox", _Value);
+	}
+}
+
+unsigned short DSP_WriteControlRegister(unsigned short _Value)
+{
+	return CDSPHandler::GetInstance().WriteControlRegister(_Value);
+}
+
+unsigned short DSP_ReadControlRegister()
+{
+	return CDSPHandler::GetInstance().ReadControlRegister();
+}
+
+void DSP_Update(int cycles)
+{
+	CDSPHandler::GetInstance().Update();
+}
+
+void DSP_SendAIBuffer(unsigned int address, int sample_rate)
+{
+}