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- #include <windows.h>
- #include "iasiodrv.h"
- #include "asiolist.h"
-
- #define ASIODRV_DESC "description"
- #define INPROC_SERVER "InprocServer32"
- #define ASIO_PATH "software\\asio"
- #define COM_CLSID "clsid"
-
- // ******************************************************************
- // Local Functions
- // ******************************************************************
- static LONG findDrvPath (char *clsidstr,char *dllpath,int dllpathsize)
- {
- HKEY hkEnum,hksub,hkpath;
- char databuf[512];
- LONG cr,rc = -1;
- DWORD datatype,datasize;
- DWORD index;
- OFSTRUCT ofs;
- HFILE hfile;
- BOOL found = FALSE;
-
- CharLowerBuff(clsidstr,strlen(clsidstr));
- if ((cr = RegOpenKey(HKEY_CLASSES_ROOT,COM_CLSID,&hkEnum)) == ERROR_SUCCESS) {
-
- index = 0;
- while (cr == ERROR_SUCCESS && !found) {
- cr = RegEnumKey(hkEnum,index++,(LPTSTR)databuf,512);
- if (cr == ERROR_SUCCESS) {
- CharLowerBuff(databuf,strlen(databuf));
- if (!(strcmp(databuf,clsidstr))) {
- if ((cr = RegOpenKeyEx(hkEnum,(LPCTSTR)databuf,0,KEY_READ,&hksub)) == ERROR_SUCCESS) {
- if ((cr = RegOpenKeyEx(hksub,(LPCTSTR)INPROC_SERVER,0,KEY_READ,&hkpath)) == ERROR_SUCCESS) {
- datatype = REG_SZ; datasize = (DWORD)dllpathsize;
- cr = RegQueryValueEx(hkpath,0,0,&datatype,(LPBYTE)dllpath,&datasize);
- if (cr == ERROR_SUCCESS) {
- memset(&ofs,0,sizeof(OFSTRUCT));
- ofs.cBytes = sizeof(OFSTRUCT);
- hfile = OpenFile(dllpath,&ofs,OF_EXIST);
- if (hfile) rc = 0;
- }
- RegCloseKey(hkpath);
- }
- RegCloseKey(hksub);
- }
- found = TRUE; // break out
- }
- }
- }
- RegCloseKey(hkEnum);
- }
- return rc;
- }
-
-
- static LPASIODRVSTRUCT newDrvStruct (HKEY hkey,char *keyname,int drvID,LPASIODRVSTRUCT lpdrv)
- {
- HKEY hksub;
- char databuf[256];
- char dllpath[MAXPATHLEN];
- WORD wData[100];
- CLSID clsid;
- DWORD datatype,datasize;
- LONG cr,rc;
-
- if (!lpdrv) {
- if ((cr = RegOpenKeyEx(hkey,(LPCTSTR)keyname,0,KEY_READ,&hksub)) == ERROR_SUCCESS) {
-
- datatype = REG_SZ; datasize = 256;
- cr = RegQueryValueEx(hksub,COM_CLSID,0,&datatype,(LPBYTE)databuf,&datasize);
- if (cr == ERROR_SUCCESS) {
- rc = findDrvPath (databuf,dllpath,MAXPATHLEN);
- if (rc == 0) {
- lpdrv = new ASIODRVSTRUCT[1];
- if (lpdrv) {
- memset(lpdrv,0,sizeof(ASIODRVSTRUCT));
- lpdrv->drvID = drvID;
- MultiByteToWideChar(CP_ACP,0,(LPCSTR)databuf,-1,(LPWSTR)wData,100);
- if ((cr = CLSIDFromString((LPOLESTR)wData,(LPCLSID)&clsid)) == S_OK) {
- memcpy(&lpdrv->clsid,&clsid,sizeof(CLSID));
- }
-
- datatype = REG_SZ; datasize = 256;
- cr = RegQueryValueEx(hksub,ASIODRV_DESC,0,&datatype,(LPBYTE)databuf,&datasize);
- if (cr == ERROR_SUCCESS) {
- strcpy(lpdrv->drvname,databuf);
- }
- else strcpy(lpdrv->drvname,keyname);
- }
- }
- }
- RegCloseKey(hksub);
- }
- }
- else lpdrv->next = newDrvStruct(hkey,keyname,drvID+1,lpdrv->next);
-
- return lpdrv;
- }
-
- static void deleteDrvStruct (LPASIODRVSTRUCT lpdrv)
- {
- IASIO *iasio;
-
- if (lpdrv != 0) {
- deleteDrvStruct(lpdrv->next);
- if (lpdrv->asiodrv) {
- iasio = (IASIO *)lpdrv->asiodrv;
- iasio->Release();
- }
- delete lpdrv;
- }
- }
-
-
- static LPASIODRVSTRUCT getDrvStruct (int drvID,LPASIODRVSTRUCT lpdrv)
- {
- while (lpdrv) {
- if (lpdrv->drvID == drvID) return lpdrv;
- lpdrv = lpdrv->next;
- }
- return 0;
- }
- // ******************************************************************
-
-
- // ******************************************************************
- // AsioDriverList
- // ******************************************************************
- AsioDriverList::AsioDriverList ()
- {
- HKEY hkEnum = 0;
- char keyname[MAXDRVNAMELEN];
- LPASIODRVSTRUCT pdl;
- LONG cr;
- DWORD index = 0;
- BOOL fin = FALSE;
-
- numdrv = 0;
- lpdrvlist = 0;
-
- cr = RegOpenKey(HKEY_LOCAL_MACHINE,ASIO_PATH,&hkEnum);
- while (cr == ERROR_SUCCESS) {
- if ((cr = RegEnumKey(hkEnum,index++,(LPTSTR)keyname,MAXDRVNAMELEN))== ERROR_SUCCESS) {
- lpdrvlist = newDrvStruct (hkEnum,keyname,0,lpdrvlist);
- }
- else fin = TRUE;
- }
- if (hkEnum) RegCloseKey(hkEnum);
-
- pdl = lpdrvlist;
- while (pdl) {
- numdrv++;
- pdl = pdl->next;
- }
-
- if (numdrv) CoInitialize(0); // initialize COM
- }
-
- AsioDriverList::~AsioDriverList ()
- {
- if (numdrv) {
- deleteDrvStruct(lpdrvlist);
- CoUninitialize();
- }
- }
-
-
- LONG AsioDriverList::asioGetNumDev (VOID)
- {
- return (LONG)numdrv;
- }
-
-
- LONG AsioDriverList::asioOpenDriver (int drvID,LPVOID *asiodrv)
- {
- LPASIODRVSTRUCT lpdrv = 0;
- long rc;
-
- if (!asiodrv) return DRVERR_INVALID_PARAM;
-
- if ((lpdrv = getDrvStruct(drvID,lpdrvlist)) != 0) {
- if (!lpdrv->asiodrv) {
- rc = CoCreateInstance(lpdrv->clsid,0,CLSCTX_INPROC_SERVER,lpdrv->clsid,asiodrv);
- if (rc == S_OK) {
- lpdrv->asiodrv = *asiodrv;
- return 0;
- }
- // else if (rc == REGDB_E_CLASSNOTREG)
- // strcpy (info->messageText, "Driver not registered in the Registration Database!");
- }
- else rc = DRVERR_DEVICE_ALREADY_OPEN;
- }
- else rc = DRVERR_DEVICE_NOT_FOUND;
-
- return rc;
- }
-
-
- LONG AsioDriverList::asioCloseDriver (int drvID)
- {
- LPASIODRVSTRUCT lpdrv = 0;
- IASIO *iasio;
-
- if ((lpdrv = getDrvStruct(drvID,lpdrvlist)) != 0) {
- if (lpdrv->asiodrv) {
- iasio = (IASIO *)lpdrv->asiodrv;
- iasio->Release();
- lpdrv->asiodrv = 0;
- }
- }
-
- return 0;
- }
-
- LONG AsioDriverList::asioGetDriverName (int drvID,char *drvname,int drvnamesize)
- {
- LPASIODRVSTRUCT lpdrv = 0;
-
- if (!drvname) return DRVERR_INVALID_PARAM;
-
- if ((lpdrv = getDrvStruct(drvID,lpdrvlist)) != 0) {
- if (strlen(lpdrv->drvname) < (unsigned int)drvnamesize) {
- strcpy(drvname,lpdrv->drvname);
- }
- else {
- memcpy(drvname,lpdrv->drvname,drvnamesize-4);
- drvname[drvnamesize-4] = '.';
- drvname[drvnamesize-3] = '.';
- drvname[drvnamesize-2] = '.';
- drvname[drvnamesize-1] = 0;
- }
- return 0;
- }
- return DRVERR_DEVICE_NOT_FOUND;
- }
-
- LONG AsioDriverList::asioGetDriverPath (int drvID,char *dllpath,int dllpathsize)
- {
- LPASIODRVSTRUCT lpdrv = 0;
-
- if (!dllpath) return DRVERR_INVALID_PARAM;
-
- if ((lpdrv = getDrvStruct(drvID,lpdrvlist)) != 0) {
- if (strlen(lpdrv->dllpath) < (unsigned int)dllpathsize) {
- strcpy(dllpath,lpdrv->dllpath);
- return 0;
- }
- dllpath[0] = 0;
- return DRVERR_INVALID_PARAM;
- }
- return DRVERR_DEVICE_NOT_FOUND;
- }
-
- LONG AsioDriverList::asioGetDriverCLSID (int drvID,CLSID *clsid)
- {
- LPASIODRVSTRUCT lpdrv = 0;
-
- if (!clsid) return DRVERR_INVALID_PARAM;
-
- if ((lpdrv = getDrvStruct(drvID,lpdrvlist)) != 0) {
- memcpy(clsid,&lpdrv->clsid,sizeof(CLSID));
- return 0;
- }
- return DRVERR_DEVICE_NOT_FOUND;
- }
-
-
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