int CHikVision::CaptureJpeg( HANDLE hChannel, QString& strFile )
{
int nRet = 0;
ULONG lSize = 1024 * 1024 * 1;
PUCHAR pImgBuff = new UCHAR[ lSize ];
nRet = GetJpegImage( hChannel, pImgBuff, &lSize, 65 );
if ( 0 != nRet ) {
delete [ ] pImgBuff;
qDebug( ) << "GetJpegImage : Failed " << endl;
return nRet;
}
// DS-40xxHC/HC+/HF/HCS JPEG4CIF(QCIF)
// 4CIF 704¡Á576 QCIF 176¡Á144 CIF 352¡Á288
// Save File
QFile imgFile( strFile );
if ( imgFile.open( QIODevice::WriteOnly ) ) {
const char* pData = ( const char* ) pImgBuff;
imgFile.write( pData, lSize );
imgFile.close( );
}
delete [ ] pImgBuff;
return nRet;
}
LRESULT CMainDlg::OnCapturePicture(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM lParam, BOOL& /*bHandled*/)
{
unsigned long dwSize = 1920*1080*2;
UCHAR* pJpegBuf = new UCHAR[dwSize];
if(pJpegBuf == NULL)
{
return FALSE;
}
int iRet = GetJpegImage(m_channelHandle[(int)lParam], pJpegBuf, &dwSize, 100);
if(iRet != 0)
{
delete pJpegBuf;
MessageBox("fail to capture a Jpeg image!");
return FALSE;
}
HANDLE hJpgFile = CreateFile("test.jpeg", GENERIC_READ | GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if(hJpgFile == INVALID_HANDLE_VALUE)
{
delete pJpegBuf;
MessageBox("fail to capture a Jpeg image!");
return FALSE;
}
if(!WriteFile(hJpgFile, pJpegBuf, dwSize, NULL, NULL))
{
delete pJpegBuf;
CloseHandle(hJpgFile);
MessageBox("fail to capture a Jpeg image!");
return FALSE;
}
delete pJpegBuf;
CloseHandle(hJpgFile);
return TRUE;
}