void CMainFrame::InitAVIWriteOpt()
{
CString filename;
CFileDialog FileDlg(FALSE,_T("avi"));
if (FileDlg.DoModal()==IDOK)
{
filename = FileDlg.GetPathName();
//capGetVideoFormat(m_hWndCap,&m_InInfo,sizeof(m_InInfo));
m_Frame = 0 ;
//AVI文件初始化
AVIFileInit() ;
bSaveAVI = TRUE;
//打开文件
AVIFileOpen(&m_pFile,filename,OF_WRITE | OF_CREATE,NULL);
memset(&strhdr, 0, sizeof(strhdr)) ;
strhdr.fccType = streamtypeVIDEO;
strhdr.fccHandler = 0 ;
strhdr.dwScale = 1 ;
strhdr.dwRate = 25 ;
strhdr.dwSuggestedBufferSize = lpbiIn->bmiHeader.biSizeImage;
SetRect(&strhdr.rcFrame, 0, 0, lpbiIn->bmiHeader.biWidth, lpbiIn->bmiHeader.biHeight);
ps = NULL;
//文件文件流
AVIFileCreateStream(m_pFile,&ps,&strhdr);
//开始捕捉
capCaptureSequenceNoFile(m_hWndCap);
}
}
/* 开始捕获预览视频 */
void CMainFrame::OnVfwPreviewvideo()
{
// TODO: 在此添加命令处理程序代码
CAPTUREPARMS CapParms;
bPreview =! bPreview;
if(bPreview){
capCaptureGetSetup(m_hWndCap,&CapParms,sizeof(CAPTUREPARMS));
CapParms.dwIndexSize=324000;
CapParms.fMakeUserHitOKToCapture=!CapParms.fMCIControl;
CapParms.wPercentDropForError=100;
CapParms.wNumVideoRequested=5;
CapParms.wChunkGranularity=0;
CapParms.fYield=TRUE;
CapParms.fCaptureAudio=FALSE;
CapParms.vKeyAbort=0;
CapParms.fAbortLeftMouse=CapParms.fAbortRightMouse=FALSE;
CapParms.dwRequestMicroSecPerFrame=1000000/25;
capSetCallbackOnYield(m_hWndCap,NULL);
capCaptureSetSetup(m_hWndCap,&CapParms,sizeof(CAPTUREPARMS));
capCaptureSequenceNoFile(m_hWndCap);
m_vfwState = PREVIEW;
}else{
capCaptureAbort(m_hWndCap);
}
}
static int vfw_start (zbar_video_t *vdo)
{
ResetEvent(vdo->state->captured);
if(!capCaptureSequenceNoFile(vdo->state->hwnd))
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_INVALID, __func__,
"starting video stream"));
return(0);
}
static void _vfw_engine_configure(VfwEngine *obj){
if (_vfw_engine_setup(obj)==-1){
return;
}
if (_vfw_engine_select_format(obj)==-1){
return ;
}
capSetCallbackOnVideoStream(obj->capvideo, vfw_engine_stream_callback);
if (!capCaptureSequenceNoFile(obj->capvideo)){
ms_error("vfw: fail to start capture !");
}
ms_thread_create(&obj->thread,NULL,vfw_engine_thread,obj);
obj->configured=TRUE;
}
// Standard AVIcap window message
// macro: capCaptureSequenceNoFile && capCaptureStop
BOOL CAviCap::StartSeq(BOOL offOn)
{
CHECKWIN();
CHECKCNCT();
if(offOn)
{
if(_fSeqIsOn) return TRUE;
_getSetup();
_captureParms.fYield = TRUE; // Watch out!
_setSetup();
return capCaptureSequenceNoFile(GetSafeHwnd()) ;
}
if(_fSeqIsOn)
capCaptureStop(GetSafeHwnd());
_fSeqIsOn=offOn;
return TRUE;
}
UINT MMCapture::run() {
for(;;) {
CaptureMessage message = m_messageQueue.get();
switch(message) {
case MESSAGE_STARTCAPTURE:
m_receiver.log(_T("handle MESSAGE_STARTCAPTURE\n"));
if(!isCapturing()) {
m_stopPending = false;
capCaptureSequenceNoFile(m_captureWindow);
}
break;
case MESSAGE_STOPCAPTURE :
m_receiver.log(_T("handle MESSAGE_STOPCAPTURE\n"));
m_stopPending = true;
break;
case MESSAGE_CAPTURESTOPPED:
m_receiver.log(_T("handle MESSAGE_CAPTURESTOPPED\n"));
m_capturing = false;
break;
case MESSAGE_TERMINATE :
m_receiver.log(_T("handle MESSAGE_TERMINATE\n"));
if(isCapturing()) {
m_receiver.log(_T("isCapturing = true. stopPending...\n"));
m_stopPending = true;
for(;;) {
if(m_messageQueue.get() == MESSAGE_CAPTURESTOPPED) {
m_receiver.log(_T("got MESSAGE_CAPTURESTOPPED. Now stop loop\n"));
m_capturing = false;
break;
}
}
}
return 0;
default:
showError(_T("%s:Unknown message in messageQueue:%d"), __TFUNCTION__,message);
exit(-1);
}
}
}
int cap_start(cap_cx *cx, int nointdec, char *err)
{
set_err("Can't start capture");
if((!cx->opened) || (cx->started))
return 0;
if((cx->pfmt = cap_getformat(cx, &(cx->fmtlen), err)))
{
if(cap_decode_start(cx, nointdec, err))
{
if(capCaptureSequenceNoFile(cx->hwnd))
{
cx->started = 1;
set_err("");
return 1;
}
cap_decode_finish(cx);
}
free(cx->pfmt);
}
return 0;
}
