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WaveCtrl.cpp
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WaveCtrl.cpp
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/*
*************************************************************************
Win32S/WinNT Wave I/O Handling Routine
Feb 01, 2003
Copyright Reserved to
Chulwoong Jeon (chulwoongjeon@hotmail.com)
Total Solutions.,LTD
Version 1.07
*************************************************************************
*/
// WaveCtrl.cpp : implementation file
//
#include "stdafx.h"
#include "WaveCtrl.h"
#include <stdio.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#pragma comment(lib, "winmm.lib")
#define BUFFERNUM 5;
#define BUFFERLEN 320;
void AppProcessMessages()
{
MSG uMsg;
while (PeekMessage(&uMsg, 0, 0, 0, PM_REMOVE))
{
TranslateMessage(&uMsg);
DispatchMessage(&uMsg);
}
}
/////////////////////////////////////////////////////////////////////////////
// CWaveIn
CWaveIn::CWaveIn()
{
m_DeviceID = 0;
m_DeviceStatus = DEV_CLOSE;
m_Channel = CH_MONO;
m_Sample = SAM_PHONE;
m_Resolution = RES_LOW;
m_HandleType = HANDLE_WINDOW;
m_AttemptClose = false;
m_InitBufferNum = BUFFERNUM;
m_BufferSize = BUFFERLEN;
m_BufferCount = 0;
m_UserSampleRate= SAM_PHONE;
m_UserResolution= RES_LOW;
m_ProcPriority = NORMAL;
OnWaveData = NULL;
OnWaveError = NULL;
OnMemError = NULL;
SetWaveFormat();
}
CWaveIn::~CWaveIn()
{
if (m_DeviceStatus == DEV_OPEN)
{
SetDeviceStatus(DEV_CLOSE);
AppProcessMessages();
}
}
BEGIN_MESSAGE_MAP(CWaveIn, CWnd)
//{{AFX_MSG_MAP(CWaveIn)
// NOTE - the ClassWizard will add and remove mapping macros here.
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CWaveIn message handlers
void CALLBACK CWaveIn::waveInProc(HWAVEIN hwi, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2)
{
((CWaveIn*)dwInstance)->ProcCallBack(uMsg,dwParam1,dwParam2);
}
void CWaveIn::Create(CWnd* pParent)
{
// TODO: Add your specialized code here and/or call the base class
m_pParent = pParent;
CWnd::Create(NULL, NULL, WS_CHILD,CRect(0, 0, 0, 0), pParent, 1234);
}
enum RESOLUTION CWaveIn::GetSampleResolution()
{
return m_Resolution;
}
void CWaveIn::SetSampleResolution(enum RESOLUTION res)
{
m_Resolution = res;
m_UserResolution = (int)res;
SetWaveFormat();
}
void CWaveIn::SetSampleRate(enum SAMPLE sam)
{
m_Sample = sam;
m_UserSampleRate = (int)sam;
SetWaveFormat();
}
enum SAMPLE CWaveIn::GetSampleRate()
{
return m_Sample;
}
void CWaveIn::SetChannel(enum CHANNEL ch)
{
m_Channel = ch;
SetWaveFormat();
}
enum CHANNEL CWaveIn::GetChannel()
{
return m_Channel;
}
void CWaveIn::SetWaveFormat()
{
m_RecWaveFormat.wFormatTag = WAVE_FORMAT_PCM;
m_RecWaveFormat.nChannels = m_Channel;
if (m_Sample != SAM_USER)
m_RecWaveFormat.nSamplesPerSec = m_Sample;
else
m_RecWaveFormat.nSamplesPerSec = m_UserSampleRate;
if (m_Resolution != RES_USER)
m_RecWaveFormat.wBitsPerSample = m_Resolution;
else
m_RecWaveFormat.wBitsPerSample = m_UserResolution;
m_RecWaveFormat.nAvgBytesPerSec = m_RecWaveFormat.nSamplesPerSec *
m_RecWaveFormat.wBitsPerSample *
m_RecWaveFormat.nChannels / 8;
m_RecWaveFormat.nBlockAlign = m_RecWaveFormat.nChannels *
m_RecWaveFormat.wBitsPerSample /8;
m_RecWaveFormat.cbSize = 0;
}
void CWaveIn::SetDeviceID(int DevID)
{
m_DeviceID = DevID;
}
int CWaveIn::GetDeviceID()
{
return m_DeviceID;
}
char * CWaveIn::GetDeviceName(int DevID)
{
WAVEINCAPS WaveCaps;
waveInGetDevCaps(DevID,&WaveCaps,sizeof(WAVEINCAPS));
return WaveCaps.szPname;
}
char* CWaveIn::GetDeviceErrorComment(MMRESULT ErrCode)
{
MMRESULT ExResult;
STRING tmp;
ExResult = waveInGetErrorText(ErrCode,tmp,sizeof(tmp));
if (ExResult != MMSYSERR_NOERROR)
{
switch(ExResult)
{
case MMSYSERR_BADERRNUM:
return "Specified error number is out of range.";
break;
case MMSYSERR_NODRIVER:
return "No device driver is present.";
break;
case MMSYSERR_NOMEM:
return "Unable to allocate or lock memory.";
break;
}
}
return tmp;
}
void CWaveIn::SetHandleType(enum HANDLETYPE proc)
{
m_HandleType = proc;
}
enum HANDLETYPE CWaveIn::GetHandleType()
{
return m_HandleType;
}
void CWaveIn::ProcWaveData(WAVEBUFFER *pBuffer, int Len)
{
if (OnWaveData != NULL)
OnWaveData(pBuffer, Len, m_pParent);
}
void CWaveIn::ProcWaveError(MMRESULT ErrorCode)
{
if (OnWaveError != NULL)
OnWaveError(ErrorCode, m_pParent);
}
void CWaveIn::ProcMemError(enum MEMERROR Err)
{
if (OnMemError != NULL)
OnMemError(Err,m_pParent);
}
void CWaveIn::SetInitBufferNum(int num)
{
m_InitBufferNum = num;
}
int CWaveIn::GetBufferCount()
{
return m_BufferCount;
}
void CWaveIn::SetBufferSize(int size)
{
m_BufferSize = size;
}
int CWaveIn::GetBufferSize()
{
return m_BufferSize;
}
bool CWaveIn::PrepareHDR(MMRESULT *ChkCode)
{
MMRESULT ExResult;
WAVEHDR *pHdr;
WAVEBUFFER *pBuffer;
pHdr = (WAVEHDR*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(*pHdr));
pBuffer = (WAVEBUFFER*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,m_BufferSize);
if ((pHdr == NULL)||(pBuffer == NULL))
{
*ChkCode = MMSYSERR_NOERROR;
return false;
}
pHdr->lpData = (LPSTR)pBuffer;
pHdr->dwBufferLength = m_BufferSize;
pHdr->dwFlags = 0;
ExResult = waveInPrepareHeader(m_hDevice,pHdr,sizeof(*pHdr));
if (ExResult != MMSYSERR_NOERROR)
{
HeapFree(GetProcessHeap(),0,pHdr->lpData);
HeapFree(GetProcessHeap(),0,pHdr);
*ChkCode = ExResult;
return false;
}
ExResult = waveInAddBuffer(m_hDevice,pHdr,sizeof(*pHdr));
if (ExResult != MMSYSERR_NOERROR)
{
HeapFree(GetProcessHeap(),0,pHdr->lpData);
HeapFree(GetProcessHeap(),0,pHdr);
*ChkCode = ExResult;
return false;
}
*ChkCode = ExResult;
m_BufferCount++;
return true;
}
bool CWaveIn::FreeHDR(WAVEHDR *pHdr,MMRESULT *ChkCode)
{
MMRESULT ExResult;
ExResult = waveInUnprepareHeader(m_hDevice,pHdr,sizeof(*pHdr));
if (ExResult != MMSYSERR_NOERROR)
{
HeapFree(GetProcessHeap(),0,pHdr->lpData);
HeapFree(GetProcessHeap(),0,pHdr);
*ChkCode = ExResult;
return false;
}
*ChkCode = ExResult;
HeapFree(GetProcessHeap(),0,pHdr->lpData);
HeapFree(GetProcessHeap(),0,pHdr);
m_BufferCount--;
return true;
}
enum STATUS CWaveIn::GetDeviceStatus()
{
return m_DeviceStatus;
}
void CWaveIn::SetDeviceStatus(enum STATUS DevStatus)
{
MMRESULT ExResult;
int i;
HANDLE ThisProcHandle;
switch (DevStatus){
case DEV_OPEN:
if (m_DeviceStatus == DEV_OPEN)
return;
if (m_AttemptClose == true)
return;
switch(m_HandleType){
case HANDLE_CALLBACK:
ExResult = waveInOpen(&m_hDevice, m_DeviceID, &m_RecWaveFormat, (DWORD)waveInProc,(DWORD)this, CALLBACK_FUNCTION);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
break;
case HANDLE_WINDOW:
ExResult = waveInOpen(&m_hDevice, m_DeviceID, &m_RecWaveFormat, (DWORD)m_hWnd, 0, CALLBACK_WINDOW);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
break;
}
AppProcessMessages();
for ( i= 0 ; i < m_InitBufferNum ; i++)
{
if (PrepareHDR(&ExResult) != true)
ProcWaveError(ExResult);
}
if (m_ProcPriority == REALTIME)
{
ThisProcHandle = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, GetCurrentProcessId());
m_OriginalPriority = GetPriorityClass(ThisProcHandle);
CloseHandle(ThisProcHandle);
ThisProcHandle = OpenProcess(PROCESS_SET_INFORMATION, FALSE, GetCurrentProcessId());
SetPriorityClass(ThisProcHandle,REALTIME_PRIORITY_CLASS);
CloseHandle(ThisProcHandle);
}
ExResult = waveInStart(m_hDevice);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
break;
case DEV_CLOSE:
switch(m_HandleType){
case HANDLE_WINDOW:
if (m_DeviceStatus == DEV_CLOSE)
return;
if (m_AttemptClose == true)
return;
m_AttemptClose = true;
while(m_BufferCount != 0)
{
AppProcessMessages();
}
ExResult = waveInStop(m_hDevice);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
ExResult = waveInReset(m_hDevice);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
while(m_BufferCount != 0)
{
AppProcessMessages();
}
ExResult = waveInClose(m_hDevice);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
break;
case HANDLE_CALLBACK:
if (m_DeviceStatus == DEV_CLOSE)
return;
if (m_AttemptClose == true)
return;
m_AttemptClose = true;
while(m_BufferCount != 0)
{
AppProcessMessages();
}
ExResult = waveInStop(m_hDevice);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
ExResult = waveInReset(m_hDevice);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
while(m_BufferCount != 0)
{
AppProcessMessages();
}
ExResult = waveInClose(m_hDevice);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
break;
}
if (m_ProcPriority == REALTIME)
{
ThisProcHandle = OpenProcess(PROCESS_SET_INFORMATION, FALSE, GetCurrentProcessId());
SetPriorityClass(ThisProcHandle, m_OriginalPriority);
CloseHandle(ThisProcHandle);
}
break;
}
}
LRESULT CWaveIn::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
// TODO: Add your specialized code here and/or call the base class
MMRESULT ExResult;
WAVEBUFFER *pBuffer;
WAVEHDR *pHdr;
int Len = 0;
switch(message){
case MM_WIM_OPEN:
m_DeviceStatus = DEV_OPEN;
break;
case MM_WIM_CLOSE:
m_DeviceStatus = DEV_CLOSE;
m_AttemptClose = false;
break;
case MM_WIM_DATA:
pHdr = (WAVEHDR*)lParam;
pBuffer = (WAVEBUFFER*)pHdr->lpData;
Len = pHdr->dwBufferLength;
if (m_AttemptClose != true)
{
if (PrepareHDR(&ExResult) != true)
{
if (ExResult == MMSYSERR_NOERROR)
ProcMemError(ERROR_PREPARE);
else
ProcWaveError(ExResult);
}
ProcWaveData(pBuffer,Len);
if (FreeHDR(pHdr,&ExResult) !=true)
{
if (ExResult == MMSYSERR_NOERROR)
ProcMemError(ERROR_FREE);
else
ProcWaveError(ExResult);
}
}else{
if (FreeHDR(pHdr,&ExResult) !=true)
{
if (ExResult == MMSYSERR_NOERROR)
ProcMemError(ERROR_FREE);
else
ProcWaveError(ExResult);
}
}
break;
}
return CWnd::WindowProc(message, wParam, lParam);
}
void CWaveIn::ProcCallBack(UINT uMsg, DWORD dwParam1, DWORD dwParam2)
{
MMRESULT ExResult;
WAVEBUFFER *pBuffer;
WAVEHDR *pHdr;
int Len = 0;
switch(uMsg){
case WIM_OPEN:
m_DeviceStatus = DEV_OPEN;
break;
case WIM_CLOSE:
m_DeviceStatus = DEV_CLOSE;
m_AttemptClose = false;
break;
case WIM_DATA:
pHdr = (WAVEHDR*)dwParam1;
pBuffer = (WAVEBUFFER*)pHdr->lpData;
Len = pHdr->dwBufferLength;
if (m_AttemptClose != true)
{
if (PrepareHDR(&ExResult) != true)
{
if (ExResult == MMSYSERR_NOERROR)
ProcMemError(ERROR_PREPARE);
else
ProcWaveError(ExResult);
}
ProcWaveData(pBuffer,Len);
if (FreeHDR(pHdr,&ExResult) !=true)
{
if (ExResult == MMSYSERR_NOERROR)
ProcMemError(ERROR_FREE);
else
ProcWaveError(ExResult);
}
}else{
if (FreeHDR(pHdr,&ExResult) !=true)
{
if (ExResult == MMSYSERR_NOERROR)
ProcMemError(ERROR_FREE);
else
ProcWaveError(ExResult);
}
}
break;
}
}
void CWaveIn::ResetDevice()
{
MMRESULT ExResult;
if (m_DeviceStatus == DEV_CLOSE)
return;
if (m_AttemptClose == true)
return;
m_AttemptClose = true;
while(m_BufferCount != 0)
{
AppProcessMessages();
}
ExResult = waveInStop(m_hDevice);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
ExResult = waveInReset(m_hDevice);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
while(m_BufferCount != 0)
{
AppProcessMessages();
}
ExResult = waveInClose(m_hDevice);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
}
int CWaveIn::GetDeviceCount()
{
return waveInGetNumDevs();
}
void CWaveIn::SetUserSampleRate(int sam)
{
m_UserSampleRate = sam;
SetWaveFormat();
}
void CWaveIn::SetUserResolution(int res)
{
m_UserResolution = res;
SetWaveFormat();
}
int CWaveIn::GetUserSampleRate()
{
return m_UserSampleRate;
}
int CWaveIn::GetUserResolution()
{
return m_UserResolution;
}
void CWaveIn::SetWaveFormat(WAVEFORMATEX fmt)
{
m_RecWaveFormat = fmt;
switch(fmt.nChannels){
case 1: m_Channel = CH_MONO;
break;
case 2: m_Channel = CH_STEREO;
break;
}
m_Resolution = RES_USER;
m_UserResolution = fmt.wBitsPerSample;
m_Sample = SAM_USER;
m_UserSampleRate = fmt.nSamplesPerSec;
}
WAVEFORMATEX CWaveIn::GetWaveFormat()
{
return m_RecWaveFormat;
}
bool CWaveIn::GetCurrentPosition(MMTIME *pMMTime)
{
MMRESULT ExResult;
ExResult = waveInGetPosition(m_hDevice,pMMTime,sizeof(*pMMTime));
if (ExResult != MMSYSERR_NOERROR)
{
ProcWaveError(ExResult);
return false;
}
return true;
}
enum PROCPRIORITY CWaveIn::GetProcPriority()
{
return m_ProcPriority;
}
bool CWaveIn::SetProcPriority(enum PROCPRIORITY priority)
{
if (m_DeviceStatus == DEV_OPEN)
return false;
m_ProcPriority = priority;
return true;
}
/////////////////////////////////////////////////////////////////////////////
// CWaveOut
CWaveOut::CWaveOut()
{
m_DeviceID = 0;
m_DeviceStatus = DEV_CLOSE;
m_Channel = CH_MONO;
m_Sample = SAM_PHONE;
m_Resolution = RES_LOW;
m_HandleType = HANDLE_WINDOW;
m_AttemptClose = false;
m_BufferCount = 0;
m_UserSampleRate= SAM_PHONE;
m_UserResolution= RES_LOW;
m_ProcPriority = NORMAL;
OnWaveDataDone = NULL;
OnWaveError = NULL;
OnMemError = NULL;
SetWaveFormat();
}
CWaveOut::~CWaveOut()
{
if (m_DeviceStatus == DEV_OPEN)
{
SetDeviceStatus(DEV_CLOSE);
AppProcessMessages();
}
}
BEGIN_MESSAGE_MAP(CWaveOut, CWnd)
//{{AFX_MSG_MAP(CWaveOut)
// NOTE - the ClassWizard will add and remove mapping macros here.
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CWaveOut message handlers
void CALLBACK CWaveOut::waveOutProc(HWAVEOUT hwi, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2)
{
((CWaveOut*)dwInstance)->ProcCallBack(uMsg,dwParam1,dwParam2);
}
void CWaveOut::SetWaveFormat()
{
m_PlayWaveFormat.wFormatTag = WAVE_FORMAT_PCM;
m_PlayWaveFormat.nChannels = m_Channel;
if (m_Sample != SAM_USER)
m_PlayWaveFormat.nSamplesPerSec = m_Sample;
else
m_PlayWaveFormat.nSamplesPerSec = m_UserSampleRate;
if (m_Resolution != RES_USER)
m_PlayWaveFormat.wBitsPerSample = m_Resolution;
else
m_PlayWaveFormat.wBitsPerSample = m_UserResolution;
m_PlayWaveFormat.nAvgBytesPerSec= m_PlayWaveFormat.nSamplesPerSec *
m_PlayWaveFormat.wBitsPerSample *
m_PlayWaveFormat.nChannels / 8;
m_PlayWaveFormat.nBlockAlign = m_PlayWaveFormat.nChannels *
m_PlayWaveFormat.wBitsPerSample /8;
m_PlayWaveFormat.cbSize = 0;
}
void CWaveOut::Create(CWnd* pParent)
{
// TODO: Add your specialized code here and/or call the base class
m_pParent = pParent;
CWnd::Create(NULL, NULL, WS_CHILD,CRect(0, 0, 0, 0), pParent, 1234);
}
char* CWaveOut::GetDeviceErrorComment(MMRESULT ErrCode)
{
MMRESULT ExResult;
STRING tmp;
ExResult = waveOutGetErrorText(ErrCode,tmp,sizeof(tmp));
if (ExResult != MMSYSERR_NOERROR)
{
switch(ExResult)
{
case MMSYSERR_BADERRNUM:
return "Specified error number is out of range.";
break;
case MMSYSERR_NODRIVER:
return "No device driver is present.";
break;
case MMSYSERR_NOMEM:
return "Unable to allocate or lock memory.";
break;
}
}
return tmp;
}
char * CWaveOut::GetDeviceName(int DevID)
{
WAVEOUTCAPS WaveCaps;
waveOutGetDevCaps(DevID,&WaveCaps,sizeof(WAVEOUTCAPS));
return WaveCaps.szPname;
}
int CWaveOut::GetBufferCount()
{
return m_BufferCount;
}
enum CHANNEL CWaveOut::GetChannel()
{
return m_Channel;
}
int CWaveOut::GetDeviceCount()
{
return waveInGetNumDevs();
}
int CWaveOut::GetDeviceID()
{
return m_DeviceID;
}
enum STATUS CWaveOut::GetDeviceStatus()
{
return m_DeviceStatus;
}
enum HANDLETYPE CWaveOut::GetHandleType()
{
return m_HandleType;
}
enum SAMPLE CWaveOut::GetSampleRate()
{
return m_Sample;
}
enum RESOLUTION CWaveOut::GetSampleResolution()
{
return m_Resolution;
}
void CWaveOut::ResetDevice()
{
MMRESULT ExResult;
if (m_DeviceStatus == DEV_CLOSE)
return;
if (m_AttemptClose == true)
return;
m_AttemptClose = true;
while(m_BufferCount != 0)
{
AppProcessMessages();
}
ExResult = waveOutReset(m_hDevice);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
while(m_BufferCount != 0)
{
AppProcessMessages();
}
ExResult = waveOutClose(m_hDevice);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
}
void CWaveOut::ProcWaveError(MMRESULT ErrorCode)
{
if (OnWaveError != NULL)
OnWaveError(ErrorCode, m_pParent);
}
void CWaveOut::SetChannel(enum CHANNEL ch)
{
m_Channel = ch;
SetWaveFormat();
}
void CWaveOut::SetDeviceID(int DevID)
{
m_DeviceID = DevID;
}
void CWaveOut::SetHandleType(enum HANDLETYPE proc)
{
m_HandleType = proc;
}
void CWaveOut::SetSampleRate(enum SAMPLE sam)
{
m_Sample = sam;
m_UserSampleRate = (int)sam;
SetWaveFormat();
}
void CWaveOut::SetSampleResolution(enum RESOLUTION res)
{
m_Resolution = res;
m_UserResolution = (int)res;
SetWaveFormat();
}
bool CWaveOut::FreeHDR(WAVEHDR *pHdr,MMRESULT *ChkCode)
{
MMRESULT ExResult;
ExResult = waveOutUnprepareHeader(m_hDevice,pHdr,sizeof(*pHdr));
if (ExResult != MMSYSERR_NOERROR)
{
HeapFree(GetProcessHeap(),0,pHdr->lpData);
HeapFree(GetProcessHeap(),0,pHdr);
*ChkCode = ExResult;
return false;
}
*ChkCode = ExResult;
HeapFree(GetProcessHeap(),0,pHdr->lpData);
HeapFree(GetProcessHeap(),0,pHdr);
m_BufferCount--;
return true;
}
void CWaveOut::SetDeviceStatus(enum STATUS DevStatus)
{
MMRESULT ExResult;
HANDLE ThisProcHandle;
switch (DevStatus){
case DEV_OPEN:
if (m_DeviceStatus == DEV_OPEN)
return;
if (m_AttemptClose == true)
return;
switch(m_HandleType){
case HANDLE_CALLBACK:
ExResult = waveOutOpen(&m_hDevice, m_DeviceID, &m_PlayWaveFormat, (DWORD)waveOutProc,(DWORD)this, CALLBACK_FUNCTION);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
break;
case HANDLE_WINDOW:
ExResult = waveOutOpen(&m_hDevice, m_DeviceID, &m_PlayWaveFormat, (DWORD)m_hWnd, 0, CALLBACK_WINDOW);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
break;
}
if (m_ProcPriority == REALTIME)
{
ThisProcHandle = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, GetCurrentProcessId());
m_OriginalPriority = GetPriorityClass(ThisProcHandle);
CloseHandle(ThisProcHandle);
ThisProcHandle = OpenProcess(PROCESS_SET_INFORMATION, FALSE, GetCurrentProcessId());
SetPriorityClass(ThisProcHandle,REALTIME_PRIORITY_CLASS);
CloseHandle(ThisProcHandle);
}
AppProcessMessages();
break;
case DEV_CLOSE:
switch(m_HandleType){
case HANDLE_WINDOW:
if (m_DeviceStatus == DEV_CLOSE)
return;
if (m_AttemptClose == true)
return;
m_AttemptClose = true;
while(m_BufferCount != 0)
{
AppProcessMessages();
}
ExResult = waveOutReset(m_hDevice);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
AppProcessMessages();
ExResult = waveOutClose(m_hDevice);
if (ExResult != MMSYSERR_NOERROR)
ProcWaveError(ExResult);
break;