//Description: the start and end function of a DLL
//Input: instance, reason for being called
//Output: nothing important
BOOL APIENTRY CALLBACK DllMain(HINSTANCE hInstance, DWORD fdwReason, PVOID pvReserved) {
//select the proper action to execute based on the reason for being called
switch(fdwReason) {
case DLL_THREAD_ATTACH:
break;
case DLL_THREAD_DETACH:
break;
//when a process attaches to the DLL, create the events and initialize the variables
//for that process
case DLL_PROCESS_ATTACH:
hEventOKToUpdate = CreateEvent(NULL, TRUE, TRUE, NULL);
hEventOKToGrab = CreateEvent(NULL, TRUE, FALSE, NULL);
pImage = NULL;
hWndC = NULL;
dwSize = 0;
break;
//when a process detaches from the DLL, stop any image capturing and destroy the window;
//note that the window must be disconnected from the imaging device before this message
//is passed otherwise a DLL_THREAD_DETACH message is sent and the DLL gets stuck;
//the close function MUST be called before the process is detached or else a crash will
//occur
case DLL_PROCESS_DETACH:
capSetCallbackOnFrame(hWndC, NULL);
capPreview(hWndC, FALSE);
DestroyWindow(hWndC);
hWndC = NULL;
dwSize = 0;
break;
}
return TRUE;
}
void CWinVideoGrabber::StopPreviewing()
{
if (!inited) return;
if (videomode == VIDEOGRABBERMODE_PREVIEWING){
capPreview(videowindow, FALSE);
videomode = VIDEOGRABBERMODE_NONE;
}
}
void CWinVideoGrabber::StartPreviewing()
{
if (!inited) return;
StopPreviewing();
StopRecording();
videomode = VIDEOGRABBERMODE_PREVIEWING;
capPreview(videowindow, True);
}
static int vfw_init (zbar_video_t *vdo,
uint32_t fmt)
{
if(vfw_set_format(vdo, fmt))
return(-1);
HWND hwnd = vdo->state->hwnd;
CAPTUREPARMS cp;
if(!capCaptureGetSetup(hwnd, &cp, sizeof(cp)))
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_WINAPI, __func__,
"retrieving capture parameters"));
cp.dwRequestMicroSecPerFrame = 33333;
cp.fMakeUserHitOKToCapture = 0;
cp.wPercentDropForError = 90;
cp.fYield = 1;
cp.wNumVideoRequested = vdo->num_images;
cp.fCaptureAudio = 0;
cp.vKeyAbort = 0;
cp.fAbortLeftMouse = 0;
cp.fAbortRightMouse = 0;
cp.fLimitEnabled = 0;
if(!capCaptureSetSetup(hwnd, &cp, sizeof(cp)))
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_WINAPI, __func__,
"setting capture parameters"));
if(!capCaptureGetSetup(hwnd, &cp, sizeof(cp)))
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_WINAPI, __func__,
"checking capture parameters"));
/* ignore errors since we skipped checking fHasOverlay */
capOverlay(hwnd, 0);
if(!capPreview(hwnd, 0) ||
!capPreviewScale(hwnd, 0))
err_capture(vdo, SEV_WARNING, ZBAR_ERR_WINAPI, __func__,
"disabling preview");
if(!capSetCallbackOnVideoStream(hwnd, vfw_stream_cb) ||
!capSetCallbackOnError(hwnd, vfw_error_cb))
return(err_capture(vdo, SEV_ERROR, ZBAR_ERR_BUSY, __func__,
"setting capture callbacks"));
vdo->num_images = cp.wNumVideoRequested;
vdo->iomode = VIDEO_MMAP; /* driver provides "locked" buffers */
zprintf(3, "initialized video capture: %d buffers %ldms/frame\n",
vdo->num_images, cp.dwRequestMicroSecPerFrame);
return(0);
}
//
// Standard AVIcap window message
// macro: capPreview
BOOL CAviCap::StartPreview(BOOL offOn)
{
CHECKWIN();
CHECKCNCT();
if(_fPreviewIsOn==offOn) return TRUE;
if(capPreview(GetSafeHwnd(), offOn))
{
_fPreviewIsOn=offOn;
return TRUE;}
return FALSE;
}
/**
* Stop previewing
*/
static javacall_result camera_stop(javacall_handle handle)
{
camera_handle* pHandle = (camera_handle*)handle;
BOOL ret = FALSE;
JAVA_DEBUG_PRINT1("[camera] camera_stop %d %d\n", pHandle->hCapWnd);
if (NULL != pHandle->hCapWnd) {
ret = capPreview(pHandle->hCapWnd, FALSE);
}
return (TRUE == ret ? JAVACALL_OK : JAVACALL_FAIL);
}
//---------------------------------------------------------------------------------------------------------------------------------------------------------------
//카메라 초기화.
bool CWebCam::StartCam(CWnd* wnd, int nWidth, int nHeight, BITMAPINFO& bmpInfo) //wnd :캡처하는 영상이 나타날, 윈도우의 포인터를 넘겨받는다.
// bmpInfo : 영상의 규격을 얻는것 , 크래스 외부에서 작업을 수행할 수 있다.
{
// 캡쳐 영상을 출력할 윈도우의 크기 및 위치 조절
m_hCam = capCreateCaptureWindow("Cam Capture", WS_CHILD | WS_VISIBLE,
0, 0, nWidth, nHeight, wnd->m_hWnd, NULL); // 유니코드 지원 여부에 따라 각각 함수 실행. 촬영하는 영상의 규격과는 상관이 없다.
if (!capDriverConnect(m_hCam, 0)) //캡처 윈도우를 카메라와 연결한다.
{
AfxMessageBox("연결된 카메라를 찾을 수 없습니다.");
return false;
}
// capDlgVideoFormat(m_hCam);
capGetVideoFormat(m_hCam, &bmpInfo, sizeof(BITMAPINFO)); //캡처영상을 사용하려면 영상의 규격정보를 알아야한다.
// 캡쳐 영상의 크기를 희망 값으로 설정
bmpInfo.bmiHeader.biWidth = nWidth;
bmpInfo.bmiHeader.biHeight = nHeight;
bmpInfo.bmiHeader.biSizeImage = nWidth*nHeight*bmpInfo.bmiHeader.biBitCount / 8;
if (!capSetVideoFormat(m_hCam, &bmpInfo, sizeof(BITMAPINFO))) //카메라의 영상 규격(크기와 색 형식 정보등)을 설정한다.
{
// 설정에 실패하면 원래 값으로 되돌림
capGetVideoFormat(m_hCam, &bmpInfo, sizeof(BITMAPINFO));
}
// 캡쳐 영상이 24비트 RGB가 될 수 있도록 설정
bmpInfo.bmiHeader.biBitCount = 24;
bmpInfo.bmiHeader.biCompression = BI_RGB;
if (!capSetVideoFormat(m_hCam, &bmpInfo, sizeof(BITMAPINFO)))
{
// 설정에 실패하면 원래 값으로 되돌림
capGetVideoFormat(m_hCam, &bmpInfo, sizeof(BITMAPINFO));
}
capOverlay(m_hCam, TRUE); //그래픽 하드웨어를 이용할 것인지 결정. *오버레이를 활성화하면 미리보기가 자동으로 비활성화됨.
capPreviewRate(m_hCam,30); //미리보기를 갱신하는 시간 간격을 설정.
capPreview(m_hCam, TRUE); //미리보기를 활성화 할 것인지 결정.
return true;
}
//Description: sets up an imaging device for capture operations
//Input: digitizer ID number and a dummy string
//Output: returns success (non-negative) or failure
EXPORT long SetUp(long driver, long width, long height){
//reset the image and size variables
pImage = NULL;
dwSize = 0;
//make sure we don't already have a window
if(hWndC == NULL) {
//create the capture window, the window is currently being draw in the top left corner
//because the buffer is filled with nothing if it is not being drawn on the screen;
//only a window size of 1x1 is needed to get this to work
hWndC = capCreateCaptureWindow(TEXT("Webcam Capture Window"), WS_CHILD | WS_VISIBLE, 0, 0,
1, 1, GetDesktopWindow(), 0);
}
//connect the selected driver to the window
if(!capDriverConnect(hWndC, driver)) {
DestroyWindow(hWndC);
return -1;
}
//create a frame capture callback function
if(!capSetCallbackOnFrame(hWndC, capFrame)) {
capDriverDisconnect(hWndC);
DestroyWindow(hWndC);
return -1;
}
//begin previewing
capPreviewRate(hWndC, 66);
if(!capPreview(hWndC, TRUE)) {
capDriverDisconnect(hWndC);
DestroyWindow(hWndC);
return -1;
}
return 0;
}
/*初始化VFW设备*/
void CMainFrame::OnVfwInitvfw()
{
// TODO: 在此添加命令处理程序代码
DWORD fsize;
// 创建视频窗口
if(!m_wndSource.CreateEx(WS_EX_TOPMOST,NULL,
_T("Source"),WS_OVERLAPPED|WS_CAPTION,
CRect(0,0,352,288),NULL,0))
return;
m_hWndCap = capCreateCaptureWindow(_T("Capture Window"),WS_CHILD|WS_VISIBLE,
0,0,352,288,
m_wndSource.m_hWnd,0);
//m_wndSource.ShowWindow(SW_SHOW);
// 注册回调函数
capSetCallbackOnError(m_hWndCap,(FARPROC)ErrorCallbackProc);
capSetCallbackOnStatus(m_hWndCap,(FARPROC)StatusCallbackProc);
capSetCallbackOnVideoStream(m_hWndCap,(FARPROC)VideoCallbackProc);
// 连接视频设备
capDriverConnect(m_hWndCap,0); //(HWND m_hWndCap, int index);//index : 0--9
// 获取驱动器的性能参数
capDriverGetCaps(m_hWndCap,&m_caps,sizeof(CAPDRIVERCAPS));
if (m_caps.fHasOverlay)
capOverlay(m_hWndCap,TRUE);
// 设置预览速率开始预览
capPreviewRate(m_hWndCap,1000/25);
capPreview(m_hWndCap,bPreview);
fsize = capGetVideoFormatSize(m_hWndCap);
capGetVideoFormat(m_hWndCap, lpbiIn, fsize);
AfxMessageBox(_T("初始化成功！"));
}
bool fInitCamera (HWND hMainWnd, int iDeviceIndex)
{
// Create a capture window to capture the output from the camera
// The capture window is not actually displayed (in this application)
hgCapWnd = capCreateCaptureWindow(NULL,
WS_CHILD, // window style
0, 0, 0, 0, // position and size
hMainWnd, ID_CAP);
if (!hgCapWnd)
{
Err("Can't open the camera display window");
return 0;
}
if (!capDriverConnect(hgCapWnd, iDeviceIndex))
{
Err("Can't connect to the camera");
return false;
}
if (!capDriverGetCaps(hgCapWnd, &gDriverCaps, sizeof(CAPDRIVERCAPS)))
{
Err("Can't get capabilities of the camera");
return false;
}
if (!capPreview(hgCapWnd, FALSE)) // turn off preview
{
Err("capPreview FALSE failed");
return false;
}
if (!capGetStatus(hgCapWnd, &gCapStatus, sizeof(CAPSTATUS)))
{
Err("Can't get status of the camera");
return false;
}
PrintCapStatus();
return true; // success
}
/**
* Start previewing
*/
static javacall_result camera_start(javacall_handle handle)
{
camera_handle* pHandle = (camera_handle*)handle;
JAVA_DEBUG_PRINT2("[camera] camera_start %d %d\n",
pHandle->hCapWnd, pHandle->visible);
/* Preview start only if there is preview window and visible is TRUE */
if (NULL != pHandle->hCapWnd && JAVACALL_TRUE == pHandle->visible) {
if (TRUE == capPreview(pHandle->hCapWnd, TRUE))
return JAVACALL_OK;
else
return JAVACALL_FAIL;
} else if (NULL == pHandle->hCapWnd) {
/* If there is no camera preview window,
* create it with default position and size */
HWND hCapWnd = camera_set_preview_window(
handle, pHandle->x, pHandle->y, pHandle->w, pHandle->h, FALSE);
if (NULL == hCapWnd)
return JAVACALL_FAIL;
}
return JAVACALL_OK;
}
int
STVideoCapture::Initialize
(
HWND hwndParentWindow, // This must be non-null
STVideoCaptureFormat videoCaptureFormat,
int capturePeriodMilliseconds,
STVideoCaptureClient * pSTVideoCaptureClient
)
{
(*this).Clear();
// Validate capture format
int captureWidth = 0;
int captureHeight = 0;
switch (videoCaptureFormat)
{
case BGR320x240: { captureWidth = 320; captureHeight = 240; } break;
}
if ((0 == captureWidth) || (0 == captureHeight))
{
printf( "Invalid capture format." );
(*this).Clear();
return (FALSE);
}
(*this).mSTVideoCaptureFormat = videoCaptureFormat;
// We create a capture window only because we are required to create
// such a window to use the Video for Windows (VFW32) API. We make
// this window tiny to keep it out of the way of our application.
// For our purposes, this window is simply a necessary interface to
// VFW functionality.
(*this).mHWNDCapture =
capCreateCaptureWindowA
(
"STVideoCapture Window",
(WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS), // style
0, // x
0, // y
4, // width
4, // height
hwndParentWindow, // Parent window : This must be non-null
0 // nID
);
if (((HWND)(0)) == (*this).mHWNDCapture)
{
printf( "Failed to create video capture window." );
DestroyWindow( (*this).mHWNDCapture );
(*this).Clear();
return (FALSE);
}
(*this).mCapDriverConnectStatus = capDriverConnect( (*this).mHWNDCapture, 0 );
if (0 == (*this).mCapDriverConnectStatus)
{
printf( "Failed to connect to video driver." );
DestroyWindow( (*this).mHWNDCapture );
(*this).Clear();
return (FALSE);
}
CAPDRIVERCAPS capdrivercaps;
memset( (&(capdrivercaps)), 0, sizeof(capdrivercaps) );
capDriverGetCaps( (*this).mHWNDCapture, &(capdrivercaps), sizeof(capdrivercaps) );
//capDlgVideoFormat( mHWNDCapture );
//capDlgVideoSource( mHWNDCapture ); // Source; Brightness, Contrast, Saturation, Exposure
// Allocate a local buffer to store capture data
int bytesPerPixel = 3;
switch (videoCaptureFormat)
{
case BGR320x240: { bytesPerPixel = 3; } break;
}
int totalImageBytes = 0;
totalImageBytes = (captureHeight * (captureWidth * bytesPerPixel));
(*this).mBGRData = (unsigned char *) malloc( totalImageBytes );
memset( (*this).mBGRData, 0, totalImageBytes );
// Set the video stream callback function
(*this).mpSTVideoCaptureClient = pSTVideoCaptureClient;
capSetCallbackOnFrame( (*this).mHWNDCapture, STVideoCapture::CommonCaptureCallback );
// Set the preview rate in milliseconds
(*this).mCapturePeriodMilliseconds = capturePeriodMilliseconds;
capPreviewRate( (*this).mHWNDCapture, capturePeriodMilliseconds );
// Disable preview mode
capPreview( (*this).mHWNDCapture, FALSE );
// Setup the data we want returned to us
BITMAPINFO capbitmapinfo;
memset( &(capbitmapinfo), 0, sizeof(BITMAPINFO) );
capbitmapinfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
capbitmapinfo.bmiHeader.biWidth = captureWidth;
capbitmapinfo.bmiHeader.biHeight = captureHeight;
capbitmapinfo.bmiHeader.biPlanes = 1;
capbitmapinfo.bmiHeader.biBitCount = 24;
capbitmapinfo.bmiHeader.biCompression = BI_RGB;
capbitmapinfo.bmiHeader.biSizeImage = totalImageBytes;
capbitmapinfo.bmiHeader.biXPelsPerMeter = 100;
capbitmapinfo.bmiHeader.biYPelsPerMeter = 100;
BOOL setVideoFormatResult = FALSE;
setVideoFormatResult = capSetVideoFormat( (*this).mHWNDCapture, &(capbitmapinfo), sizeof(BITMAPINFO) );
if (FALSE == setVideoFormatResult)
{
printf( "Failed to set the desired video capture format." );
capSetCallbackOnFrame( (*this).mHWNDCapture, NULL ); // disable the callback function
DestroyWindow( (*this).mHWNDCapture );
(*this).Clear( );
return (FALSE);
}
return( TRUE );
}
BOOL CWebCam::StopRecord()
{
capCaptureStop(m_hCam); //캡처동작 정지. 캡처한 영상을 파일에 저장.
return capPreview(m_hCam, TRUE);
}
void CSoCProjectView::OnInitialUpdate()
{
CScrollView::OnInitialUpdate();
CSize sizeTotal;
// TODO: 이 뷰의 전체 크기를 계산합니다.
sizeTotal.cx = 640;
sizeTotal.cy = 480;
SetScrollSizes(MM_TEXT, sizeTotal);
CSoCProjectDoc*pDoc = GetDocument();
// TODO: 여기에 생성 코드를 추가합니다.
RECT r;
GetClientRect(&r);
pDoc->m_hCamWnd = capCreateCaptureWindow(
_T("Capture Window"), WS_CHILD | WS_VISIBLE, 5, 5, r.right-5, r.bottom-5, this->m_hWnd, NULL);
// 설치된 디바이스를 순서로 0 ~ 9까지의 카메라를 지정 할 수 있다.
if(!capDriverConnect(pDoc->m_hCamWnd, 0)) AfxMessageBox(_T("웹캠 인식 실패 ㅠㅠ"));
// 현재 드라이버 정보에 관한 내용 얻어오기
capDriverGetCaps(pDoc->m_hCamWnd, &pDoc->m_psCapsInfo, sizeof(pDoc->m_psCapsInfo));
//비디오 포맷 변환을 지원하는지 확인한다.
if(pDoc->m_psCapsInfo.fHasDlgVideoFormat) {
// 비디오 포맷 변환을 지원하면 아래 함수를 호출한다.
// 호출되는 함수는 새로운 다이얼로그를 호출하고 해상도와 포맷형식, 프레임 버퍼크기등을 지정할 수 있다.
// 이때, 지원되지 않는 비디오포멧을 설정하면 검정 화면을 보게될 것이야...
capDlgVideoFormat(pDoc->m_hCamWnd);
}
// m_psCapsInfo.fHasOverlay에서 overlay가 지원이 되지 않으면(=0) 사용 할 수 없다.
if(pDoc->m_psCapsInfo.fHasOverlay) {
// 하드웨어 오버레이는 시스템 부하를 줄여준다.(optioinal)
capOverlay(pDoc->m_hCamWnd, FALSE);
}
// BITMAPINFO 설정
capGetVideoFormat(pDoc->m_hCamWnd, &pDoc->m_BTMInfo, sizeof(pDoc->m_BTMInfo));
// 1/1000 단위로 영상이 출력된다.
capPreviewRate(pDoc->m_hCamWnd, 1);
// 프리뷰 영상을 재생한다.
capPreview(pDoc->m_hCamWnd, TRUE);
CAPTUREPARMS cp;
capCaptureGetSetup(pDoc->m_hCamWnd, &cp, sizeof(cp) ); // get the current defaults
cp.dwRequestMicroSecPerFrame = 1; // Set desired frame rate
cp.fMakeUserHitOKToCapture = FALSE;
cp.fYield = TRUE; // we want capture on a background thread.
cp.wNumVideoRequested = (WORD) 1; // we may get less than this - no problem
cp.fCaptureAudio = FALSE;
cp.vKeyAbort = 0; // If no key is provided, it won't stop...
cp.fAbortLeftMouse = FALSE;
cp.fAbortRightMouse = FALSE;
cp.fLimitEnabled = FALSE; // we want to stop
cp.fMCIControl = FALSE;
capCaptureSetSetup(pDoc->m_hCamWnd, &cp, sizeof(cp) );
capSetCallbackOnVideoStream(pDoc->m_hCamWnd, VideoCallbackProc);
capSetCallbackOnFrame(pDoc->m_hCamWnd, VideoCallbackProc);
}
long __stdcall DlgProc ( HWND hWnd , unsigned msg , unsigned wParam , long lParam )
{
switch(msg)
{
case WM_INITDIALOG:
//hEdit = GetDlgItem( hWnd , I_EDIT );
//GetClientRect( hEdit , &rect );
hWndCap = capCreateCaptureWindow ( NULL, WS_CHILD | WS_VISIBLE , 0, 0, 320, 240, hWnd, 1235 );
//hWndCap = capCreateCaptureWindow ( NULL, WS_CHILD | WS_VISIBLE , 0, 0, (rect.right-rect.left ), (rect.bottom-rect.top), hEdit, 1235);
// вручную заполняем структуру CapVar
ZeroMemory( &CapVar, sizeof(COMPVARS) );
CapVar.cbSize = sizeof(COMPVARS);
CapVar.dwFlags = ICMF_COMPVARS_VALID;
CapVar.cbState = 0;
CapVar.fccHandler = mmioFOURCC( 'x', '2', '6', '4' );
CapVar.fccType = ICTYPE_VIDEO;
// открываем декомпрессор (долго)
CapVar.hic = ICOpen( ICTYPE_VIDEO, CapVar.fccHandler, ICMODE_COMPRESS );
hThread = CreateThread( NULL, 0, (LPTHREAD_START_ROUTINE)SendThread, NULL, 0, 0 );
return -1 ;
case WM_COMMAND:
switch(LOWORD(wParam))
{
case I_BUTTON_CONN :
if( !capDriverConnect( hWndCap, 0 ) )
{
EndDialog ( hWnd, 0 );
return -1;
}
capCaptureGetSetup( hWndCap, &CapParms, sizeof(CAPTUREPARMS) );
CapParms.dwRequestMicroSecPerFrame = 66000;
CapParms.fLimitEnabled = FALSE;
CapParms.fCaptureAudio = FALSE;
CapParms.fMCIControl = FALSE;
CapParms.fYield = TRUE;
CapParms.vKeyAbort = VK_ESCAPE;
CapParms.fAbortLeftMouse = FALSE;
CapParms.fAbortRightMouse = FALSE;
capCaptureSetSetup( hWndCap, &CapParms, sizeof(CAPTUREPARMS) );
capPreviewScale( hWndCap, 1 );
capPreviewRate( hWndCap, 66 );
capPreviewScale( hWndCap, FALSE );
capPreview( hWndCap, 1 );
//added by jimmy
// OPTIONAL STEP: Setup resolution
capGetVideoFormat( hWndCap, &InputBmpInfo ,sizeof(InputBmpInfo) );
//InputBmpInfo.bmiHeader.biWidth = 320; //(rect.right-rect.left );
//InputBmpInfo.bmiHeader.biHeight = 240; //(rect.bottom-rect.top);
//InputBmpInfo.bmiHeader.biBitCount = 24;
capSetVideoFormat( hWndCap, &InputBmpInfo, sizeof(InputBmpInfo) );
//capDriverDisconnect (hWndCap, 0);//Can we do better?
//capDriverConnect (hWndCap, 0);
capSetCallbackOnFrame( hWndCap, FrameCallBack );
if(CapVar.hic > 0 )
{
OutFormatSize = ICCompressGetFormatSize( CapVar.hic, &InputBmpInfo.bmiHeader ); // BITMAPINFO возвращает размер структуры исходных данных InputBmpInfo
ICCompressGetFormat( CapVar.hic, &InputBmpInfo.bmiHeader, &OutputBmpInfo.bmiHeader ); // заполняет структуру получаемых данных OutputBmpInfo
OutBufferSize = ICCompressGetSize( CapVar.hic, &InputBmpInfo.bmiHeader, &OutputBmpInfo.bmiHeader ); // максимальный размер одного сжатого кадра (полученного)
ICSeqCompressFrameStart( &CapVar, &InputBmpInfo ); // начало сжатия
}
break;
case I_BUTTON_EXIT :
ICSeqCompressFrameEnd(&CapVar); // конец сжатия
ICCompressorFree(&CapVar);
ICClose(CapVar.hic);
capPreview( hWndCap , false );
capDriverDisconnect( hWndCap );
EndDialog ( hWnd , 0 ) ;
break;
}
return -1 ;
case WM_CLOSE :
ICSeqCompressFrameEnd(&CapVar); // конец сжатия
ICCompressorFree(&CapVar);
ICClose(CapVar.hic);
capPreview( hWndCap , false );
capDriverDisconnect( hWndCap );
EndDialog ( hWnd , 0 ) ;
return -1 ;
}
return 0 ;
}
