project64/Source/Project64/Plugins/Audio Plugin.cpp

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#include "stdafx.h"
void FixUPXIssue ( BYTE * ProgramLocation );
CAudioPlugin::CAudioPlugin ( const char * FileName)
{
//Make sure all parts of the class are initialized
m_Initilized = false;
m_RomOpen = false;
hDll = NULL;
m_hAudioThread = NULL;
UnloadPlugin();
//Try to load the DLL library
UINT LastErrorMode = SetErrorMode( SEM_FAILCRITICALERRORS );
hDll = LoadLibrary(FileName);
SetErrorMode(LastErrorMode);
if (hDll == NULL) {
UnloadPlugin();
return;
}
FixUPXIssue((BYTE *)hDll);
//Get DLL information
void (__cdecl *GetDllInfo) ( PLUGIN_INFO * PluginInfo );
GetDllInfo = (void (__cdecl *)(PLUGIN_INFO *))GetProcAddress( (HMODULE)hDll, "GetDllInfo" );
if (GetDllInfo == NULL) { UnloadPlugin(); return; }
GetDllInfo(&m_PluginInfo);
if (!ValidPluginVersion(&m_PluginInfo)) { UnloadPlugin(); return; }
//Find entries for functions in DLL
void (__cdecl *InitFunc) ( void );
m_DacrateChanged = (void (__cdecl *)(SystemType)) GetProcAddress( (HMODULE)hDll, "AiDacrateChanged" );
LenChanged = (void (__cdecl *)(void)) GetProcAddress( (HMODULE)hDll, "AiLenChanged" );
Config = (void (__cdecl *)(DWORD))GetProcAddress( (HMODULE)hDll, "DllConfig" );
ReadLength = (DWORD (__cdecl *)(void))GetProcAddress( (HMODULE)hDll, "AiReadLength" );
InitFunc = (void (__cdecl *)(void)) GetProcAddress( (HMODULE)hDll, "InitiateAudio" );
RomOpen = (void (__cdecl *)(void)) GetProcAddress( (HMODULE)hDll, "RomOpen" );
RomClosed = (void (__cdecl *)(void)) GetProcAddress( (HMODULE)hDll, "RomClosed" );
CloseDLL = (void (__cdecl *)(void)) GetProcAddress( (HMODULE)hDll, "CloseDLL" );
ProcessAList = (void (__cdecl *)(void)) GetProcAddress( (HMODULE)hDll, "ProcessAList" );
Update = (void (__cdecl *)(BOOL))GetProcAddress( (HMODULE)hDll, "AiUpdate" );
//version 102 functions
PluginOpened = (void (__cdecl *)(void))GetProcAddress( (HMODULE)hDll, "PluginLoaded" );
//Make sure dll had all needed functions
if (m_DacrateChanged == NULL) { UnloadPlugin(); return; }
if (LenChanged == NULL) { UnloadPlugin(); return; }
if (ReadLength == NULL) { UnloadPlugin(); return; }
if (InitFunc == NULL) { UnloadPlugin(); return; }
if (RomClosed == NULL) { UnloadPlugin(); return; }
if (ProcessAList == NULL) { UnloadPlugin(); return; }
SetSettingInfo2 = (void (__cdecl *)(PLUGIN_SETTINGS2 *))GetProcAddress( (HMODULE)hDll, "SetSettingInfo2" );
if (SetSettingInfo2)
{
PLUGIN_SETTINGS2 info;
info.FindSystemSettingId = (unsigned int (*)( void * handle, const char * ))CSettings::FindGameSetting;
SetSettingInfo2(&info);
}
SetSettingInfo = (void (__cdecl *)(PLUGIN_SETTINGS *))GetProcAddress( (HMODULE)hDll, "SetSettingInfo" );
if (SetSettingInfo)
{
PLUGIN_SETTINGS info;
info.dwSize = sizeof(PLUGIN_SETTINGS);
info.DefaultStartRange = FirstAudioDefaultSet;
info.SettingStartRange = FirstAudioSettings;
info.MaximumSettings = MaxPluginSetting;
info.NoDefault = Default_None;
info.DefaultLocation = _Settings->LoadDword(Setting_UseFromRegistry) ? SettingType_Registry : SettingType_CfgFile;
info.handle = _Settings;
info.RegisterSetting = (void (*)(void *,int,int,SettingDataType,SettingType,const char *,const char *, DWORD))CSettings::RegisterSetting;
info.GetSetting = (unsigned int (*)( void * handle, int ID ))CSettings::GetSetting;
info.GetSettingSz = (const char * (*)( void *, int, char *, int ))CSettings::GetSettingSz;
info.SetSetting = (void (*)(void *,int,unsigned int))CSettings::SetSetting;
info.SetSettingSz = (void (*)(void *,int,const char *))CSettings::SetSettingSz;
info.UseUnregisteredSetting = NULL;
SetSettingInfo(&info);
//_Settings->UnknownSetting_AUDIO = info.UseUnregisteredSetting;
}
if (m_PluginInfo.Version >= 0x0102)
{
if (PluginOpened == NULL) { UnloadPlugin(); return; }
PluginOpened();
}
}
CAudioPlugin::~CAudioPlugin (void) {
Close();
UnloadPlugin();
}
bool CAudioPlugin::Initiate ( CN64System * System, CMainGui * RenderWindow ) {
typedef struct {
HWND hwnd;
HINSTANCE hinst;
BOOL MemoryBswaped; // If this is set to TRUE, then the memory has been pre
// bswap on a dword (32 bits) boundry
// eg. the first 8 bytes are stored like this:
// 4 3 2 1 8 7 6 5
BYTE * HEADER; // This is the rom header (first 40h bytes of the rom
// This will be in the same memory format as the rest of the memory.
BYTE * RDRAM;
BYTE * DMEM;
BYTE * IMEM;
DWORD * MI__INTR_REG;
DWORD * AI__DRAM_ADDR_REG;
DWORD * AI__LEN_REG;
DWORD * AI__CONTROL_REG;
DWORD * AI__STATUS_REG;
DWORD * AI__DACRATE_REG;
DWORD * AI__BITRATE_REG;
void (__cdecl *CheckInterrupts)( void );
} AUDIO_INFO;
//Get Function from DLL
BOOL (__cdecl *InitiateAudio) ( AUDIO_INFO Audio_Info );
InitiateAudio = (BOOL (__cdecl *)(AUDIO_INFO))GetProcAddress( (HMODULE)hDll, "InitiateAudio" );
if (InitiateAudio == NULL) { return false; }
AUDIO_INFO Info;
memset(&Info,0,sizeof(Info));
//We are initilizing the plugin before any rom is loaded so we do not have any correct
//paramaters here .. just needed to we can config the DLL
if (System == NULL) {
BYTE Buffer[100];
DWORD Value = 0;
Info.hwnd = (HWND)RenderWindow->m_hMainWindow;;
Info.hinst = GetModuleHandle(NULL);
Info.MemoryBswaped = TRUE;
Info.HEADER = Buffer;
Info.RDRAM = Buffer;
Info.DMEM = Buffer;
Info.IMEM = Buffer;
Info.MI__INTR_REG = &Value;
Info.AI__DRAM_ADDR_REG = &Value;
Info.AI__LEN_REG = &Value;
Info.AI__CONTROL_REG = &Value;
Info.AI__STATUS_REG = &Value;
Info.AI__DACRATE_REG = &Value;
Info.AI__BITRATE_REG = &Value;
Info.CheckInterrupts = DummyCheckInterrupts;
m_Initilized = InitiateAudio(Info) != 0;
//jabo had a bug so I call CreateThread so his dllmain gets called again
DWORD ThreadID;
HANDLE hthread = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)DummyFunction,NULL,0, &ThreadID);
CloseHandle(hthread);
Sleep(100);
return m_Initilized;
}
m_StatusReg = 0;
//Send Initilization information to the DLL
Info.hwnd = (HWND)RenderWindow->m_hMainWindow;
Info.hinst = GetModuleHandle(NULL);
Info.MemoryBswaped = TRUE;
Info.HEADER = _Rom->GetRomAddress();
Info.RDRAM = _MMU->Rdram();
Info.DMEM = _MMU->Dmem();
Info.IMEM = _MMU->Imem();
Info.MI__INTR_REG = &_Reg->m_AudioIntrReg;
Info.AI__DRAM_ADDR_REG = &_Reg->AI_DRAM_ADDR_REG;
Info.AI__LEN_REG = &_Reg->AI_LEN_REG;
Info.AI__CONTROL_REG = &_Reg->AI_CONTROL_REG;
Info.AI__STATUS_REG = &m_StatusReg;
Info.AI__DACRATE_REG = &_Reg->AI_DACRATE_REG;
Info.AI__BITRATE_REG = &_Reg->AI_BITRATE_REG;
Info.CheckInterrupts = DummyCheckInterrupts;
m_Initilized = InitiateAudio(Info) != 0;
//jabo had a bug so I call CreateThread so his dllmain gets called again
DWORD ThreadID;
HANDLE hthread = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)DummyFunction,NULL,0, &ThreadID);
CloseHandle(hthread);
if (Update) {
m_hAudioThread = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)AudioThread, (LPVOID)this,0, &ThreadID);
}
if (_Reg->AI_DACRATE_REG != 0) {
DacrateChanged(SYSTEM_NTSC);
}
return m_Initilized;
}
void CAudioPlugin::RomOpened ( void )
{
//Real system ... then make the file as open
if (!m_RomOpen && RomOpen)
{
RomOpen();
m_RomOpen = true;
}
}
void CAudioPlugin::Close(void) {
if (m_RomOpen) {
RomClosed();
m_RomOpen = false;
}
if (m_Initilized) {
CloseDLL();
m_Initilized = false;
}
}
void CAudioPlugin::GameReset(void)
{
if (m_RomOpen)
{
RomClosed();
if (RomOpen)
{
RomOpen();
}
}
}
bool CAudioPlugin::ValidPluginVersion(PLUGIN_INFO * PluginInfo) {
switch (PluginInfo->Type) {
case PLUGIN_TYPE_AUDIO:
if (PluginInfo->MemoryBswaped == FALSE) { return FALSE; }
if (PluginInfo->Version == 0x0101) { return TRUE; }
if (PluginInfo->Version == 0x0102) { return TRUE; }
break;
}
return FALSE;
}
void CAudioPlugin::UnloadPlugin(void) {
if (m_hAudioThread)
{
WriteTraceF(TraceAudio,__FUNCTION__ ": Terminate Audio Thread");
TerminateThread(m_hAudioThread,0);
m_hAudioThread = NULL;
}
memset(&m_PluginInfo,0,sizeof(m_PluginInfo));
if (hDll != NULL ) {
FreeLibrary((HMODULE)hDll);
hDll = NULL;
}
m_DacrateChanged = NULL;
LenChanged = NULL;
Config = NULL;
ReadLength = NULL;
Update = NULL;
ProcessAList = NULL;
RomClosed = NULL;
CloseDLL = NULL;
}
void CAudioPlugin::DacrateChanged (SystemType Type)
{
if (!Initilized()) { return; }
WriteTraceF(TraceAudio,__FUNCTION__ ": SystemType: %s", Type == SYSTEM_NTSC ? "SYSTEM_NTSC" : "SYSTEM_PAL");
DWORD Frequency = _Reg->AI_DACRATE_REG * 30;
DWORD CountsPerSecond = (_Reg->VI_V_SYNC_REG != 0 ? (_Reg->VI_V_SYNC_REG + 1) * _Settings->LoadDword(Game_ViRefreshRate) : 500000) * 60;
m_DacrateChanged(Type);
}
void CAudioPlugin::AudioThread (CAudioPlugin * _this) {
SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL );
for (;;)
{
_this->Update(true);
}
}