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vsthost.cpp
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vsthost.cpp
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/*****************************************************************************/
/* vsthost.cpp : Defines the class behaviors for the application. */
/*****************************************************************************/
/******************************************************************************
Copyright (C) 2006 Hermann Seib
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
******************************************************************************/
#include "stdafx.h"
#include "vsthost.h"
#include "MainFrm.h"
#include "ChildFrm.h"
#include "specmidi.h"
#include "mididev.h"
#include "specwave.h"
#include "wavedev.h"
#include "WorkThread.h"
#include "SpecDSound.h"
#include "ShellSelDlg.h"
#include "midikeybdlg.h"
#ifdef __ASIO_H
#include "SpecAsioHost.h"
#include "AsioChannelSelectDialog.h"
#endif
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/*****************************************************************************/
/* CAboutDlg dialog used for App About */
/*****************************************************************************/
class CAboutDlg : public CDialog
{
public:
CAboutDlg();
// Dialog Data
//{{AFX_DATA(CAboutDlg)
enum { IDD = IDD_ABOUTBOX };
//}}AFX_DATA
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CAboutDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL
// Implementation
protected:
//{{AFX_MSG(CAboutDlg)
// No message handlers
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
//{{AFX_DATA_INIT(CAboutDlg)
//}}AFX_DATA_INIT
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAboutDlg)
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg)
// No message handlers
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/*===========================================================================*/
/* CMyCommandLineInfo : command line information class */
/*===========================================================================*/
class CMyCommandLineInfo : public CCommandLineInfo
{
public:
CMyCommandLineInfo()
{
bNoLoad = FALSE;
bNoSave = FALSE;
}
virtual void ParseParam(LPCTSTR lpszParam, BOOL bFlag, BOOL bLast);
BOOL bNoLoad;
BOOL bNoSave;
};
/*****************************************************************************/
/* ParseParam : called to parse parameters */
/*****************************************************************************/
void CMyCommandLineInfo::ParseParam(LPCTSTR lpszParam, BOOL bFlag, BOOL bLast)
{
if (bFlag)
{
CString sParam(lpszParam);
if (!sParam.CompareNoCase("noload"))
bNoLoad = TRUE;
else if (!sParam.CompareNoCase("nosave"))
bNoSave = TRUE;
}
CCommandLineInfo::ParseParam(lpszParam, bFlag, bLast);
}
/*===========================================================================*/
/* CVsthostApp class members */
/*===========================================================================*/
/*****************************************************************************/
/* CVsthostApp message map */
/*****************************************************************************/
BEGIN_MESSAGE_MAP(CVsthostApp, CWinApp)
//{{AFX_MSG_MAP(CVsthostApp)
ON_COMMAND(ID_APP_ABOUT, OnAppAbout)
ON_COMMAND(ID_FILE_NEW, OnFileNew)
ON_COMMAND(IDM_MIDIDEV, OnMididev)
ON_COMMAND(IDM_WAVEDEV, OnWavedev)
ON_COMMAND(IDM_ENG_START, OnEngStart)
ON_UPDATE_COMMAND_UI(IDM_ENG_START, OnUpdateEngStart)
ON_COMMAND(IDM_ENGINE_RESTART, OnEngineRestart)
ON_UPDATE_COMMAND_UI(IDM_ENGINE_RESTART, OnUpdateEngineRestart)
ON_COMMAND(IDM_ASIO_CPL, OnAsioCpl)
ON_UPDATE_COMMAND_UI(IDM_ASIO_CPL, OnUpdateAsioCpl)
ON_COMMAND(IDM_MIDIKEYB, OnMidikeyb)
ON_UPDATE_COMMAND_UI(IDM_MIDIKEYB, OnUpdateMidikeyb)
ON_COMMAND(IDM_MIDIKEYB_PROPERTIES, OnMidikeybProperties)
ON_UPDATE_COMMAND_UI(IDM_MIDIKEYB_PROPERTIES, OnUpdateMidikeybProperties)
ON_COMMAND(IDM_ASIO_CHN, OnAsioChn)
ON_UPDATE_COMMAND_UI(IDM_ASIO_CHN, OnUpdateAsioChn)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/*****************************************************************************/
/* CVsthostApp : constructor */
/*****************************************************************************/
CVsthostApp::CVsthostApp()
{
bEngRunning = FALSE;
nTypeWIn = nTypeWOut = -1;
pMidiKeyb = 0;
}
/*****************************************************************************/
/* The one and only CVsthostApp object */
/*****************************************************************************/
CVsthostApp theApp;
/*****************************************************************************/
/* InitInstance : application initialization */
/*****************************************************************************/
BOOL CVsthostApp::InitInstance()
{
// Allow XP Look & Feel
InitCommonControls();
CWinApp::InitInstance();
if (FAILED(CoInitialize(NULL)))
return FALSE;
AfxEnableControlContainer();
#if 0
SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS);
#endif
// Standard initialization
// If you are not using these features and wish to reduce the size
// of your final executable, you should remove from the following
// the specific initialization routines you do not need.
#ifdef _AFXDLL
Enable3dControls(); // Call this when using MFC in a shared DLL
#else
Enable3dControlsStatic(); // Call this when linking to MFC statically
#endif
// Change the registry key under which our settings are stored.
SetRegistryKey(_T("Seib"));
CMyCommandLineInfo cmdInfo;
ParseCommandLine(cmdInfo);
bNoSave = cmdInfo.bNoSave;
#if 0 /* change for dynamic profiles! */
// dynamic profile based on application name
char szAppName[_MAX_PATH];
::GetModuleFileName(NULL,szAppName,sizeof(szAppName));
char *absl = strrchr(szAppName, '\\');
char *extn = strrchr(szAppName, '.');
if (extn > absl)
*extn = '\0';
free((void *)m_pszProfileName); /* generate profile section */
m_pszProfileName = strdup(absl ? absl + 1 : szAppName);
free((void *)m_pszAppName); /* and application name */
m_pszAppName = strdup(m_pszProfileName);
// from now on, Get/SetProfile can be used
#endif
#ifdef __ASIO_H
pAsioHost = new CSpecAsioHost;
#else
pAsioHost = 0;
#endif
// To create the main window, this code creates a new frame window
// object and then sets it as the application's main window object.
CMDIFrameWnd* pFrame = new CMainFrame;
m_pMainWnd = pFrame;
// create main MDI frame window
if (!pFrame->LoadFrame(IDR_MAINFRAME))
return FALSE;
// try to load shared MDI menus and accelerator table
//TODO: add additional member variables and load calls for
// additional menu types your application may need.
HINSTANCE hInst = AfxGetResourceHandle();
m_hMDIMenu = ::LoadMenu(hInst, MAKEINTRESOURCE(IDR_VSTHOSTYPE));
m_hMDIAccel = ::LoadAccelerators(hInst, MAKEINTRESOURCE(IDR_VSTHOSTYPE));
// The main window has been initialized, so show and update it.
pFrame->ShowWindow(m_nCmdShow);
pFrame->UpdateWindow();
wTID = 0; /* reset HR timer ID */
timeGetDevCaps(&tc, sizeof(tc)); /* get timer capabilities */
for (int i = 0; i < 2; i++) /* prepare empty buffers */
{
emptyBuf[i] = new float[44100];
if (emptyBuf[i])
for (int j = 0; j < 44100; j++)
emptyBuf[i][j] = 0.f;
}
CWaveOutDeviceList ol;
sWaveMapper = CString("MME: ") + ol[0];
/* create work thread */
pWorkThread = new CWorkThread(&vstHost);
int nBufSz = GetProfileInt("Settings", "WaveOutBufSize", 4410);
/* open outputs device */
MidiOut.Open(GetProfileString("Settings", "MidiOut"));
LoadWaveOutDevice(GetProfileString("Settings", "WaveOut", sWaveMapper),
nBufSz);
#ifdef __ASIO_H
if (pAsioHost) /* if ASIO host there, pass thread */
{
pAsioHost->SetWorkThread(pWorkThread);
if (pAsioHost->IsLoaded())
SetAsioChannels(GetProfileString("Settings", "AsioChnIn"),
GetProfileString("Settings", "AsioChnOut"));
}
#endif
/* open input devices */
MidiIn.Open(GetProfileString("Settings", "MidiIn"),
OPENDEFAULT,
OPENDEFAULT,
CALLBACK_FUNCTION);
MidiIn.SetMidiThru(GetProfileInt("Settings", "MidiThru", FALSE));
if (GetProfileString("Settings", "WaveOut", sWaveMapper).
Left(6).CompareNoCase("ASIO: "))
LoadWaveInDevice(GetProfileString("Settings", "WaveIn", sWaveMapper),
nBufSz);
if (!cmdInfo.bNoLoad) /* if not disabled, */
LoadSetup(); /* load setup */
/* if called with effect name, open */
if (cmdInfo.m_nShellCommand == CCommandLineInfo::FileOpen)
LoadEffect(cmdInfo.m_strFileName);
if (GetProfileInt("Settings", "Engine", 0))
EngineStart();
return TRUE;
}
/*****************************************************************************/
/* ExitInstance : called when the application terminates */
/*****************************************************************************/
int CVsthostApp::ExitInstance()
{
FullStop(); /* stop engine and close devices */
if (!bNoSave) /* if not disabled, */
SaveSetup(); /* save current setup */
vstHost.RemoveAll(); /* remove all loaded effects */
if (pMidiKeyb) /* if MIDI keyboard there */
delete pMidiKeyb; /* delete it */
for (int i = 0; i < 2; i++) /* delete empty buffers */
if (emptyBuf[i])
delete[] emptyBuf[i];
#ifdef __ASIO_H
if (pAsioHost) /* remove ASIO Host */
delete pAsioHost;
#endif
if (pWorkThread) /* remove work thread */
delete pWorkThread;
if (m_hMDIMenu != NULL) /* free resources */
FreeResource(m_hMDIMenu);
if (m_hMDIAccel != NULL)
FreeResource(m_hMDIAccel);
TRACE0("VSTHost ended.\n");
return CWinApp::ExitInstance();
}
/*****************************************************************************/
/* OnFileNew : called when File / New is selected */
/*****************************************************************************/
void CVsthostApp::OnFileNew()
{
CMainFrame* pFrame = STATIC_DOWNCAST(CMainFrame, m_pMainWnd);
CString sStartAt;
sStartAt = GetProfileString("Load", "Path");
if (sStartAt.GetLength())
sStartAt += "\\*.*";
CFileDialog dlg(TRUE, NULL, sStartAt);
if (dlg.DoModal() == IDOK)
{
sStartAt = dlg.GetPathName();
sStartAt = sStartAt.Left(sStartAt.ReverseFind('\\'));
WriteProfileString("Load", "Path", sStartAt);
LoadEffect(dlg.GetPathName());
}
}
/*****************************************************************************/
/* OnAppAbout : called to display the About... dialog */
/*****************************************************************************/
void CVsthostApp::OnAppAbout()
{
CAboutDlg aboutDlg;
aboutDlg.DoModal();
}
/*****************************************************************************/
/* FillPopup : fills a popup menu with an effect's programs */
/*****************************************************************************/
void CVsthostApp::FillPopup(CMenu* pPopupMenu, int nEffect)
{
int i, j;
CEffect *pEffect = vstHost.GetAt(nEffect);
/* remove all old items */
for (i = pPopupMenu->GetMenuItemCount() - 1; i >= 2; i--)
{
if ((pPopupMenu->GetSubMenu(i)) ||
(pPopupMenu->GetMenuItemID(i) ==
IDM_EFF_PROGRAM_0))
pPopupMenu->RemoveMenu(i, MF_BYPOSITION);
}
if ((pEffect) &&
(pEffect->pEffect->numPrograms > 1))
{
long lProg = pEffect->EffGetProgram();
bool bProgSet = false;
int nClass = (pEffect->pEffect->flags & effFlagsIsSynth) ?
kPlugCategSynth :
kPlugCategUnknown;
for (i = 0; i < pEffect->pEffect->numPrograms; i += 16)
{
CMenu popup;
popup.CreatePopupMenu();
for (j = i; (j < i + 16) && (j < pEffect->pEffect->numPrograms); j++)
{
CString sProg;
char szPgName[256] = "";
if (!pEffect->EffGetProgramNameIndexed(nClass, j, szPgName))
{
bProgSet = true;
pEffect->EffSetProgram(j);
pEffect->EffGetProgramName(szPgName);
if (!*szPgName)
sprintf(szPgName, "Program %d", j);
}
sProg.Format("%d. %s", j, szPgName);
popup.AppendMenu(MF_STRING, IDM_EFF_PROGRAM_0 + j, sProg);
}
CString sSub;
sSub.Format("Programs %d-%d", i, j-1);
pPopupMenu->AppendMenu(MF_POPUP | MF_STRING,
(UINT)popup.Detach(),
sSub);
}
if (bProgSet)
pEffect->EffSetProgram(lProg);
pPopupMenu->CheckMenuItem(IDM_EFF_PROGRAM_0 + lProg,
MF_CHECKED | MF_BYCOMMAND);
}
}
/*****************************************************************************/
/* LoadEffect : loads a new effect */
/*****************************************************************************/
BOOL CVsthostApp::LoadEffect(LPCSTR lpszFileName, int *pnEffect, int nUniqueId)
{
BOOL bWasRunning = bEngRunning; /* get current engine state */
EngineStop(); /* stop engine */
if (pnEffect) /* initialize effect ID if necessary */
*pnEffect = -1;
int nEffect = vstHost.LoadPlugin(lpszFileName, nUniqueId);
if (nEffect >= 0) /* look whether shell category */
{
CSmpEffect *pEffect = (CSmpEffect *)vstHost.GetAt(nEffect);
/* if that's a shell plugin */
if ((pEffect->EffGetPlugCategory() == kPlugCategShell) &&
(!nUniqueId)) /* and not yet specified */
{ /* enumerate the contained effects */
CStringArray saNames;
CDWordArray dwaIDs;
char szName[_MAX_PATH];
unsigned long ulID;
while ((ulID = pEffect->EffGetNextShellPlugin(szName)))
{
if (saNames.Add(szName) < 0)
break;
if (dwaIDs.Add(ulID) < 0)
{
saNames.RemoveAt(saNames.GetUpperBound());
break;
}
}
vstHost.RemoveAt(nEffect); /* delete shell effect */
nEffect = -1;
CShellSelDlg dlg; /* get plugin ID to use */
dlg.saNames.Append(saNames);
if (dlg.DoModal() == IDOK) /* and eventually re-load for that */
nEffect = vstHost.LoadPlugin(lpszFileName, dwaIDs[dlg.nSelID]);
}
}
if (bWasRunning) /* if it was running before, */
EngineStart(); /* restart engine */
if (nEffect >= 0)
{
// create a new MDI child window
CChildFrame *pChild = (CChildFrame *)CreateChild(RUNTIME_CLASS(CChildFrame),
IDR_VSTHOSTYPE);
if (pChild)
{
pChild->SetEffect(nEffect);
ERect *pRect = NULL;
vstHost.GetAt(nEffect)->EffEditGetRect(&pRect);
if (pnEffect)
*pnEffect = nEffect;
return TRUE;
}
}
return FALSE;
}
/*****************************************************************************/
/* CreateChild : creats a new MDI child window */
/*****************************************************************************/
CMDIChildWnd * CVsthostApp::CreateChild
(
CRuntimeClass *pClass,
UINT nResource,
HMENU hMenu,
HACCEL hAccel
)
{
if (!hMenu)
hMenu = m_hMDIMenu;
if (!hAccel)
hAccel = m_hMDIAccel;
CMDIFrameWnd *pMain = (CMDIFrameWnd*)m_pMainWnd;
CMDIChildWnd *pChild = pMain->CreateNewChild(pClass,
nResource,
hMenu,
hAccel);
if (pChild)
pMain->MDIActivate(pChild);
return pChild;
}
/*****************************************************************************/
/* OnMididev : called to determine the used MIDI devices */
/*****************************************************************************/
void CVsthostApp::OnMididev()
{
CMidiDeviceDialog dlg(AfxGetMainWnd());
dlg.InName = GetProfileString("Settings", "MidiIn");
dlg.OutName = GetProfileString("Settings", "MidiOut");
dlg.bPassThru = GetProfileInt("Settings", "MidiThru", FALSE);
if (dlg.DoModal() == IDOK)
{
CWaitCursor wc; /* display wait cursor */
BOOL bWasRunning = bEngRunning; /* remember old setting */
EngineStop(); /* stop input engine */
if (!MidiIn.Open(dlg.InName, /* open input device */
OPENDEFAULT,
OPENDEFAULT,
CALLBACK_FUNCTION))
dlg.InName = "";
if (!MidiOut.Open(dlg.OutName)) /* open output device */
dlg.OutName = "";
MidiIn.SetMidiThru(dlg.bPassThru); /* set midi thru */
WriteProfileString("Settings", "MidiIn", dlg.InName);
WriteProfileString("Settings", "MidiOut", dlg.OutName);
WriteProfileInt("Settings", "MidiThru", dlg.bPassThru);
if (bWasRunning) /* if it was running before, */
EngineStart(); /* start input engine */
}
}
/*****************************************************************************/
/* TimerCallback : high-resolution timer entry point */
/*****************************************************************************/
void CALLBACK CVsthostApp::TimerCallback
(
UINT uID,
UINT uMsg,
DWORD dwUser,
DWORD dw1,
DWORD dw2
)
{
if (dwUser) /* pass it on to real app. object */
((CVsthostApp *)dwUser)->HRTimer();
}
/*****************************************************************************/
/* SetTimer : starts / stops a high-resolution timer if no Wave In device */
/*****************************************************************************/
BOOL CVsthostApp::SetTimer(UINT nMSecs)
{
if ((!nMSecs) && (wTID)) /* if killing a running timer */
{
timeKillEvent(wTID);
wTID = 0;
timeEndPeriod(tc.wPeriodMin);
nTimerMSecs = 0;
return TRUE;
}
else /* if starting a HR timer */
{
if (nMSecs < tc.wPeriodMin) /* look whether possible */
return FALSE;
nTimerMSecs = nMSecs; /* remember requested period */
nMSecs /= 10; /* set HR timer to 1/10 of that */
if (nMSecs < tc.wPeriodMin) /* prohibit going TOO low */
nMSecs = tc.wPeriodMin;
timeBeginPeriod(nMSecs); /* start using timer services */
dwLastTime = timeGetTime(); /* setup for correct start */
dwRest = 0;
wTID = timeSetEvent( /* start the timer procedure */
nMSecs,
(nMSecs > 1) ? nMSecs / 2 : 1,
TimerCallback,
(DWORD)this,
TIME_PERIODIC);
return !!wTID; /* return whether started */
}
}
/*****************************************************************************/
/* HRTimer : called when the high-res timer ticks */
/*****************************************************************************/
void CVsthostApp::HRTimer()
{
static DWORD dwCurTime; /* current time */
static DWORD dwOffset; /* time offset */
static WORD wClocks; /* # clock ticks to send */
static WORD i; /* clock tick counter */
dwCurTime = timeGetTime(); /* get current time */
dwOffset = dwCurTime - /* calculate #msecs since last msg */
dwLastTime;
if (dwOffset > dwCurTime) /* if overflow */
{
dwLastTime = 0; /* reset start tick */
dwOffset = dwCurTime; /* this may cause one hiccup every */
} /* 49 days... horrible... */
dwOffset += dwRest; /* add eventual rest */
if (dwOffset > nTimerMSecs) /* if another timer tick's due */
{
dwLastTime = dwCurTime; /* remember this tick */
dwRest = dwOffset - nTimerMSecs; /* calculate new rest */
pWorkThread->Process(emptyBuf, /* process empty samples */
(44100 * nTimerMSecs / 1000),
2,
dwCurTime - dwStartStamp);
}
}
/*****************************************************************************/
/* LoadWaveInDevice : loads a Wave In device */
/*****************************************************************************/
BOOL CVsthostApp::LoadWaveInDevice(CString sDevice, int nBufSz)
{
BOOL bRC = FALSE;
int nDevType = 0;
TRACE2("LoadWaveInDevice(\"%s\",%d)\n", (LPCSTR)sDevice, nBufSz);
/* either run with Wave In */
if (!sDevice.Left(5).CompareNoCase("MME: "))
sDevice = sDevice.Mid(5);
else if (!sDevice.Left(4).CompareNoCase("DS: "))
{
nDevType = 1;
sDevice = sDevice.Mid(4);
}
else if (!sDevice.Left(6).CompareNoCase("ASIO: "))
{
nDevType = 2;
sDevice = sDevice.Mid(6);
}
nTypeWIn = nDevType;
switch (nDevType)
{
case 0 : /* MME ? */
WaveIn.SetupAllocSize(44100 / nBufSz, nBufSz);
bRC = WaveIn.Open(sDevice,
NULL,
WAVEOPENDEFAULT,
WAVEOPENDEFAULT,
CALLBACK_EVENT);
WaveIn.SetWorkThread(pWorkThread);
break;
case 1 : /* DirectSound ? */
#pragma message("DirectSound Input Device not fully coded!")
bRC = DSoundIn.Open((LPCSTR)sDevice, DSCBCAPS_WAVEMAPPED, nBufSz, NULL);
DSoundIn.SetWorkThread(pWorkThread);
break;
case 2 : /* ASIO ? */
// done in LoadWaveOutDevice()
break;
}
TRACE1(" -> %sOK\n", bRC?"":"NOT ");
return bRC;
}
/*****************************************************************************/
/* LoadWaveOutDevice : loads a Wave Out device */
/*****************************************************************************/
BOOL CVsthostApp::LoadWaveOutDevice
(
CString sDevice,
int &nBufSz
)
{
BOOL bRC = FALSE;
int nDevType = 0;
TRACE2("LoadWaveOutDevice(\"%s\",%d)\n", (LPCSTR)sDevice, nBufSz);
if (!sDevice.Left(5).CompareNoCase("MME: "))
sDevice = sDevice.Mid(5);
else if (!sDevice.Left(4).CompareNoCase("DS: "))
{
nDevType = 1;
sDevice = sDevice.Mid(4);
}
else if (!sDevice.Left(6).CompareNoCase("ASIO: "))
{
nDevType = 2;
sDevice = sDevice.Mid(6);
}
nTypeWOut = nDevType;
switch (nDevType)
{
case 0 : /* MME ? */
DSoundOut.Close();
#ifdef __ASIO_H
if ((pAsioHost) && (pAsioHost->IsLoaded()))
pAsioHost->UnloadDriver();
#endif
bRC = WaveOut.Open(sDevice,
NULL,
WAVEOPENDEFAULT,
WAVEOPENDEFAULT,
CALLBACK_EVENT);
WaveOut.AllocateBuffers(44100 / nBufSz);
break;
case 1 : /* DirectSound ? */
WaveOut.Close();
#ifdef __ASIO_H
if ((pAsioHost) && (pAsioHost->IsLoaded()))
pAsioHost->UnloadDriver();
#endif
bRC = DSoundOut.Open(sDevice,
// DSBCAPS_CTRLDEFAULT |
DSBCAPS_CTRLFREQUENCY |
DSBCAPS_CTRLPAN |
DSBCAPS_CTRLVOLUME |
DSBCAPS_CTRLPOSITIONNOTIFY |
DSBCAPS_GETCURRENTPOSITION2 |
DSBCAPS_GLOBALFOCUS,
nBufSz, NULL);
break;
case 2 : /* ASIO ? */
WaveOut.Close();
DSoundOut.Close();
#ifdef __ASIO_H
if (pAsioHost)
bRC = pAsioHost->LoadDriver((char *)(LPCSTR)sDevice, nBufSz);
if (bRC) /* if load went OK, */
{ /* make sure to use the correct */
ASIOSampleRate cRate; /* sample rate... */
pAsioHost->GetSampleRate(&cRate);
vstHost.SetSampleRate((float)cRate);
}
#endif
break;
}
TRACE2(" -> %sOK, buffer size=%d\n", bRC?"":"NOT ", nBufSz);
vstHost.SetBlockSize(nBufSz);
return bRC;
}
/*****************************************************************************/
/* SetAsioChannels : sets stereo channels */
/*****************************************************************************/
bool CVsthostApp::SetAsioChannels(LPCSTR lpszChnIn, LPCSTR lpszChnOut)
{
#ifdef __ASIO_H
if ((pAsioHost) && (pAsioHost->IsLoaded()))
{
CString sIn(lpszChnIn), sOut(lpszChnOut);
long i, lIn = 0, lOut = 0, lCur = -1;
pAsioHost->GetChannels(&lIn, &lOut);
ASIOChannelInfo info = {0};
long lCurIn = -1, lCurOut = -1;
info.isInput = ASIOTrue;
for (i = 0; i < lIn; i++)
{
info.channel = i;
pAsioHost->GetChannelInfo(&info);
if (lCurIn < 0) /* if not started yet */
{
if (sIn.IsEmpty()) /* if simply going for default */
pAsioHost->SetActiveChannel(i, true);
else if (!sIn.CompareNoCase(info.name))
{
pAsioHost->SetActiveChannel(i, true);
lCurIn++;
}
else
pAsioHost->SetActiveChannel(i, false);
}
else if (lCurIn >= 1) /* if already found all */
pAsioHost->SetActiveChannel(i, false);
else /* if one of the selected channels */
{
pAsioHost->SetActiveChannel(i, true);
lCurIn++;
}
}
info.isInput = ASIOFalse;
for (i = 0; i < lOut; i++)
{
info.channel = i;
pAsioHost->GetChannelInfo(&info);
if (lCurOut < 0) /* if not started yet */
{
if (sOut.IsEmpty()) /* if simply going for default */
pAsioHost->SetActiveChannel(lIn + i, true);
else if (!sOut.CompareNoCase(info.name))
{
pAsioHost->SetActiveChannel(lIn + i, true);
lCurOut++;
}
else
pAsioHost->SetActiveChannel(lIn + i, false);
}
else if (lCurOut >= 1) /* if already found all */
pAsioHost->SetActiveChannel(lIn + i, false);
else /* if one of the selected channels */
{
pAsioHost->SetActiveChannel(lIn + i, true);
lCurOut++;
}
}
return true;
}
return false;
#endif
}
/*****************************************************************************/
/* OnWavedev : called to configure the wave devices */
/*****************************************************************************/
void CVsthostApp::OnWavedev()
{
CWaveDeviceDialog dlg(AfxGetMainWnd());
dlg.InName = GetProfileString("Settings", "WaveIn", sWaveMapper);
dlg.OutName = GetProfileString("Settings", "WaveOut", sWaveMapper);
dlg.nBufSize = GetProfileInt("Settings", "WaveOutBufSize", 4410);
if (dlg.DoModal() == IDOK)
{
CWaitCursor wc; /* display wait cursor */
BOOL bWasRunning = bEngRunning; /* remember old setting */
EngineStop(); /* stop input engine */
if (dlg.OutName.Left(6).CompareNoCase("ASIO: "))
{
TRACE0("#(re-)Open Wave Input Device\n");
/* open input device */
if (!LoadWaveInDevice(dlg.InName, dlg.nBufSize))
dlg.InName = ""; /* upon error reset name */
}
else
{
WaveIn.Close();
DSoundIn.Close();
}
WriteProfileString("Settings", "WaveIn", dlg.InName);
TRACE0("#(re-)Open Wave Output Device\n");
/* open output device */
if (!LoadWaveOutDevice(dlg.OutName, dlg.nBufSize))
dlg.OutName = "";
WriteProfileString("Settings", "WaveOut", dlg.OutName);
WriteProfileInt("Settings", "WaveOutBufSize", dlg.nBufSize);
if (bWasRunning) /* if it was running before, */
EngineStart(); /* start input engine */
}
}
/*****************************************************************************/
/* SetupLatency : we need some latency to make the system work without hiccup*/
/*****************************************************************************/
void CVsthostApp::SetupLatency()
{
if (!WaveOut.IsOpen()) /* only do if output open */
return;
#if 0
// works without that as well.
for (int i = 0; i < 2; i++) /* prepare a bit */
pWorkThread->Process(emptyBuf, 2205); /* of empty samples */
#endif
}
/*****************************************************************************/
/* EngineStop : stops eventual running input engine */
/*****************************************************************************/
void CVsthostApp::EngineStop()
{
if (!bEngRunning)
return;
TRACE0("Stopping VSTHost engine\n");
SetTimer(0); /* close eventually opened HR timer */
WaveIn.Stop(); /* stop eventual record mode */
DSoundIn.Stop();
MidiIn.Stop();
TRACE0("# Resetting Wave input device\n");
WaveIn.Reset(); /* and make sure it doesn't pump on */
TRACE0("# Resetting MIDI input device\n");
MidiIn.Reset();
TRACE0("# Both devices reset.\n");
#ifdef __ASIO_H
if (pAsioHost)
{
TRACE0("# Stopping ASIO Host\n");
pAsioHost->Stop();
}
#endif
int nSleeps = 0;
int nWaitIn = WaveIn.WaitingBuffers();
int nWaitOut = WaveOut.WaitingBuffers();
while (nWaitIn || nWaitOut) /* wait until all work done */
{
TRACE2("# Waiting for buffer completion (%d in, %d out)\n",
WaveIn.WaitingBuffers(),
WaveOut.WaitingBuffers());
Sleep (50);
nWaitIn = WaveIn.WaitingBuffers();
nWaitOut = WaveOut.WaitingBuffers();
if (++nSleeps > 20)
{
TRACE("# Waited over a second; wait aborted.\n");
break;
}
}
TRACE0("#VSTHost Engine stopped.\n");
bEngRunning = FALSE;
}
/*****************************************************************************/
/* EngineStart : restarts input engine */
/*****************************************************************************/
void CVsthostApp::EngineStart()
{
if (bEngRunning)
return;
TRACE0("Starting VSTHost engine\n");
int nTimer = WaveOut.AllocatedBuffers();
if (nTimer)
nTimer = 1000 / nTimer;
else
nTimer = 44100 / GetProfileInt("Settings", "WaveOutBufSize", 4410);
#ifdef __ASIO_H
if ((nTypeWOut == 2) && /* if ASIO Host Output */
pAsioHost &&
pAsioHost->IsLoaded())
{
TRACE0(" Starting ASIO Host\n");
pAsioHost->Start();
dwStartStamp = timeGetTime(); /* put common timestamp reference */
}
else
{
#endif
SetupLatency(); /* setup latency */