void CSoCProjectView::OnDraw(CDC* pDC)
{
CSoCProjectDoc*pDoc = GetDocument();
ASSERT_VALID(pDoc);
if (!pDoc)
return;
ClearRect(pDC, RGB(255,255,255));
// TODO: 여기에 원시 데이터에 대한 그리기 코드를 추가합니다.
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) );
}
/* 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);
}
}
int cap_configure(cap_cx *cx, char *err)
{
CAPTUREPARMS params;
if(capCaptureGetSetup(cx->hwnd, ¶ms, sizeof(params)))
{
params.fYield = TRUE;
params.fCaptureAudio = FALSE;
params.wPercentDropForError = 100;
params.fMakeUserHitOKToCapture = FALSE;
params.fAbortLeftMouse = FALSE;
params.fAbortRightMouse = FALSE;
params.vKeyAbort = 0;
if(capCaptureSetSetup(cx->hwnd, ¶ms, sizeof(params)))
{
if(capSetCallbackOnVideoStream(cx->hwnd, cap_stream_cb))
{
return 1;
}
}
}
set_err("Can't set capture settings");
return 0;
}
//
// Setup required capture parameters.
// Do it at once!
BOOL CAviCap::SetCapSetup(CAPTUREPARMS *parms)
{
CHECKWIN();
CHECKCNCT();
if(!parms) return FALSE;
if(!capCaptureSetSetup (GetSafeHwnd(), parms, sizeof CAPTUREPARMS)||
!_getSetup()||!_getFormat())
return FALSE;
return TRUE;
}
void VideoGrabber::Init()
{
mGrabNextFrame = FALSE;
mPreviousFrameExists = FALSE;
// Setup capture window and connect webcam driver
camhwnd = capCreateCaptureWindow (_T("Ahtung!"), 0 , 0, 0, FRAME_WIDTH, FRAME_HEIGHT, 0, 0);
SendMessage(camhwnd, WM_CAP_DRIVER_CONNECT, 0, 0);
capSetCallbackOnFrame(camhwnd, FrameCallbackProc);
capSetCallbackOnVideoStream(camhwnd, FrameCallbackProc); // Use same callback function, consider mGrabNextFrame flag!
capSetUserData(camhwnd, this); // Callback functions may use pointer to this VideoGrabber
if (mPreviousFrame != NULL) {
delete[] mPreviousFrame;
mPreviousFrame = NULL;
}
mMotionDetectedDuringLastSecond = FALSE;
// TODO: Use MPEGLAYER3WAVEFORMAT instead this
// Setup audio params
WAVEFORMATEX wfex;
wfex.wFormatTag = WAVE_FORMAT_PCM;
wfex.nChannels = 1; // Use mono
wfex.nSamplesPerSec = 8000;
wfex.nAvgBytesPerSec = 8000;
wfex.nBlockAlign = 1;
wfex.wBitsPerSample = 8;
wfex.cbSize = 0;
capSetAudioFormat(camhwnd, &wfex, sizeof(WAVEFORMATEX));
// Setup video capturing and streaming
CAPTUREPARMS parms;
capCaptureGetSetup(camhwnd, &parms, sizeof(CAPTUREPARMS));
parms.fAbortLeftMouse = FALSE;
parms.wPercentDropForError = 100; // Never abort capturing in case of dropped frames
parms.fAbortRightMouse = FALSE;
//parms.fLimitEnabled = TRUE;
//parms.wTimeLimit = 0; // TODO!
parms.fYield = TRUE; // TODO!
capCaptureSetSetup(camhwnd, &parms, sizeof(parms));
// !!!
capSetCallbackOnError(camhwnd, capErrorCallback);
// Resume thread for motion detection
mListenerHandle = CreateThread(0, 0, ListeningRoutine, this, CREATE_SUSPENDED, &mThreadID);
SetEnabled(TRUE);
ResumeThread(mListenerHandle);
}
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);
}
void CWinVideoGrabber::SetAudioCapture(Bool p_value)
{
if (!inited)
return;
CAPTUREPARMS t_parameters;
capCaptureGetSetup(videowindow, &t_parameters, sizeof(CAPTUREPARMS));
t_parameters . fCaptureAudio = p_value;
BOOL t_result;
t_result = capCaptureSetSetup(videowindow, &t_parameters, sizeof(CAPTUREPARMS));
}
void CWinVideoGrabber::StartRecording(char *filename)
{
if (!inited) return;
StopRecording();
//StopPreviewing();
CAPTUREPARMS CaptureParms;
capCaptureGetSetup(videowindow, &CaptureParms, sizeof(CAPTUREPARMS));
CaptureParms.fYield = True;
CaptureParms.fAbortLeftMouse = False;
CaptureParms.fAbortRightMouse = False;
capCaptureSetSetup(videowindow, &CaptureParms, sizeof (CAPTUREPARMS));
capFileSetCaptureFile(videowindow, filename);
capCaptureSequence(videowindow);
videomode = VIDEOGRABBERMODE_RECORDING;
}
// Initialize camera input
bool CvCaptureCAM_VFW::open( int wIndex )
{
char szDeviceName[80];
char szDeviceVersion[80];
HWND hWndC = 0;
close();
if( (unsigned)wIndex >= 10 )
wIndex = 0;
for( ; wIndex < 10; wIndex++ )
{
if( capGetDriverDescription( wIndex, szDeviceName,
sizeof (szDeviceName), szDeviceVersion,
sizeof (szDeviceVersion)))
{
hWndC = capCreateCaptureWindow ( "My Own Capture Window",
WS_POPUP | WS_CHILD, 0, 0, 320, 240, 0, 0);
if( capDriverConnect (hWndC, wIndex))
break;
DestroyWindow( hWndC );
hWndC = 0;
}
}
if( hWndC )
{
capWnd = hWndC;
hdr = 0;
hic = 0;
fourcc = (DWORD)-1;
memset( &caps, 0, sizeof(caps));
capDriverGetCaps( hWndC, &caps, sizeof(&caps));
::MoveWindow( hWndC, 0, 0, 320, 240, TRUE );
capSetUserData( hWndC, (size_t)this );
capSetCallbackOnFrame( hWndC, frameCallback );
CAPTUREPARMS p;
capCaptureGetSetup(hWndC,&p,sizeof(CAPTUREPARMS));
p.dwRequestMicroSecPerFrame = 66667/2;
capCaptureSetSetup(hWndC,&p,sizeof(CAPTUREPARMS));
//capPreview( hWndC, 1 );
capPreviewScale(hWndC,FALSE);
capPreviewRate(hWndC,1);
}
return capWnd != 0;
}
void MMCapture::captureInit(UINT framesPerSecond, UINT audioBufferSize) {
DWORD style = WS_CHILD;
m_captureWindow = capCreateCaptureWindow(_T("my capture window"), style,0,0,640,480,m_receiver.getWindow(),1);
if(m_captureWindow == NULL) {
throwException(_T("%s:Cannot create CaptureWindow:%s"),__TFUNCTION__,getLastErrorText().cstr());
}
try {
CHECKRESULT(capSetUserData( m_captureWindow, this));
if(captureVideo()) {
CHECKRESULT(capDriverConnect(m_captureWindow, 0 ));
m_webCamConnected = true;
}
CAPTUREPARMS param;
CHECKRESULT(capCaptureGetSetup(m_captureWindow,¶m,sizeof(param)));
param.dwRequestMicroSecPerFrame = 1000000 / framesPerSecond;
param.fYield = TRUE;
param.AVStreamMaster = AVSTREAMMASTER_AUDIO; // AVSTREAMMASTER_NONE;
param.dwAudioBufferSize = audioBufferSize;
CHECKRESULT(capCaptureSetSetup(m_captureWindow,¶m,sizeof(param)));
if(captureAudio()) {
int audioFormatSize = capGetAudioFormat(m_captureWindow,&m_audioFormat, sizeof(m_audioFormat));
CHECKRESULT(capSetCallbackOnWaveStream( m_captureWindow, captureWaveStreamCallback));
}
if(captureVideo()) {
int videoFormatSize = capGetVideoFormat(m_captureWindow,&m_videoFormat, sizeof(m_videoFormat));
CHECKRESULT(capSetCallbackOnVideoStream(m_captureWindow, captureVideoStreamCallback));
CHECKRESULT(capSetCallbackOnFrame( m_captureWindow, captureFrameCallback));
}
CHECKRESULT(capSetCallbackOnStatus( m_captureWindow, captureStatusCallback));
CHECKRESULT(capSetCallbackOnCapControl( m_captureWindow, captureControlCallback));
CHECKRESULT(capSetCallbackOnError( m_captureWindow, captureErrorCallback));
if(captureAudio() && m_playAudio) {
m_audioThread = new AudioPlayerThread(*this); TRACE_NEW(m_audioThread);
m_audioThread->start();
}
} catch(...) {
captureCleanup();
throw;
}
}
void CWinVideoGrabber::SetFrameRate(int p_rate)
{
if (!inited)
return;
CAPTUREPARMS t_parameters;
capCaptureGetSetup(videowindow, &t_parameters, sizeof(CAPTUREPARMS));
// p_rate is assumed to be in frames per second. We need to convert this to Microseconds per frame for Windows video.
DWORD t_microsecs_per_frame;
t_microsecs_per_frame = 1000000 / p_rate;
t_parameters . dwRequestMicroSecPerFrame = t_microsecs_per_frame;
BOOL t_result;
t_result = capCaptureSetSetup(videowindow, &t_parameters, sizeof(CAPTUREPARMS));
}
static int _vfw_engine_setup(VfwEngine *obj){
CAPTUREPARMS capparam ;
capCaptureGetSetup(obj->capvideo,&capparam,sizeof(capparam)) ;
capparam.dwRequestMicroSecPerFrame = 33000 ; /*makes around 30fps*/
// detach capture from application
capparam.fYield = TRUE ;
capparam.fMakeUserHitOKToCapture = FALSE;
capparam.fAbortLeftMouse = FALSE;
capparam.fAbortRightMouse = FALSE;
capparam.wPercentDropForError = 90 ;
capparam.fCaptureAudio = FALSE ;
capparam.fAbortRightMouse = FALSE;
capparam.fAbortLeftMouse = FALSE;
capparam.AVStreamMaster = AVSTREAMMASTER_NONE ;
if (!capCaptureSetSetup(obj->capvideo,&capparam,sizeof(capparam))){
ms_error("capCaptureSetSetup failed.");
return -1;
}
capSetUserData(obj->capvideo, obj);
return 0;
}
//General connection method
BOOL CAviCap::_connect2Driver(int indx)
{
CHECKWIN();
if(indx<0||indx>_totalDrv())
{
TRACE("CAviCap Window connection failed: illegal driver index\n");
iLastError=CAP_ILLEGAL_DRIVERID;
return FALSE;
}
AfxGetApp( )-> DoWaitCursor( 1 );
//connect via VFW
BOOL ret=capDriverConnect(GetSafeHwnd(), indx);
checkQuit();
if(ret)
{
//starts gathering of driver information
_curDriver=indx;
if(!_getCaps()||
!_getSetup()||
!_getStatus()||
!_getFormat())
{
iLastError=CAP_INIT_FAILED;
ret=FALSE;
}
else
{
//try to make window unvisible befor testing
BOOL vsbl=IsWindowVisible();
if(vsbl) ShowWindow(SW_HIDE);
//Slow or fast connection?
if(!m_DoQuickConnection) {
//OK. We have enough time to test driver :-)
UP_THR();
#ifdef ON_CONNECT_TEST_BIBITSCOUNT
_testBiBitsCount();
#endif
checkQuit();
#ifdef ON_CONNECT_CHECK_VALIDFORMATS
_testValidFormats();
#endif
checkQuit();
#ifdef DEFAULT_FORCE_SINGLE_FRAME
_testInternalBuffers();
#endif
checkQuit();
DN_THR();
}
//else skip testing
// Setup default capture parameters
// OPTIONAL
#ifdef DEFAULT_FORCE_SINGLE_FRAME
capSetCallbackOnFrame(GetSafeHwnd(),(LPVOID)_1FrameCallbackProc);
_1FrameCallBackInstalled = TRUE;
#else
capSetCallbackOnFrame(GetSafeHwnd(), _defaultFrameCallbackProc);
capPreviewRate(GetSafeHwnd(), _previewRate);
#endif
#ifdef DEFAULT_USED_DOSMEMORY
_captureParms.wNumVideoRequested=1;
_captureParms.fUsingDOSMemory=TRUE;
#endif
#ifdef DEFAULT_STEP_CAPTUREAT2X
_captureParms.fStepCaptureAt2x=TRUE;
_captureParms.wStepCaptureAverageFrames=3;
#endif
_captureParms.dwRequestMicroSecPerFrame=20000;
_captureParms.fYield = TRUE;
capCaptureSetSetup (GetSafeHwnd(), &_captureParms, sizeof CAPTUREPARMS);
capCaptureGetSetup (GetSafeHwnd(), &_captureParms, sizeof CAPTUREPARMS);
if(vsbl) ShowWindow(SW_SHOW); //restore
}//end else
}
else
{
AfxGetApp( )-> DoWaitCursor( 0 );
TRACE("Connection to Capure Driver Failed\n");
iLastError=CAP_CONNECTION_FAILED;
return FALSE;
}
if(ret) TRACE("Connected to <%s: %s>\n",GetDriverName(),GetDriverVer());
else TRACE("Connection (phase 2) to Capure Driver Failed\n");
if(!ret) Disconnect();
return ret;
}
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);
}
int
camera_device_start_capturing(CameraDevice* cd,
uint32_t pixel_format,
int frame_width,
int frame_height)
{
WndCameraDevice* wcd;
HBITMAP bm_handle;
BITMAP bitmap;
size_t format_info_size;
CAPTUREPARMS cap_param;
if (cd == NULL || cd->opaque == NULL) {
E("%s: Invalid camera device descriptor", __FUNCTION__);
return -1;
}
wcd = (WndCameraDevice*)cd->opaque;
/* wcd->dc is an indicator of capturing: !NULL - capturing, NULL - not */
if (wcd->dc != NULL) {
W("%s: Capturing is already on on device '%s'",
__FUNCTION__, wcd->window_name);
return 0;
}
/* Connect capture window to the video capture driver. */
if (!capDriverConnect(wcd->cap_window, wcd->input_channel)) {
return -1;
}
/* Get current frame information from the driver. */
format_info_size = capGetVideoFormatSize(wcd->cap_window);
if (format_info_size == 0) {
E("%s: Unable to get video format size: %d",
__FUNCTION__, GetLastError());
_camera_device_reset(wcd);
return -1;
}
wcd->frame_bitmap = (BITMAPINFO*)malloc(format_info_size);
if (wcd->frame_bitmap == NULL) {
E("%s: Unable to allocate frame bitmap info buffer", __FUNCTION__);
_camera_device_reset(wcd);
return -1;
}
if (!capGetVideoFormat(wcd->cap_window, wcd->frame_bitmap,
format_info_size)) {
E("%s: Unable to obtain video format: %d", __FUNCTION__, GetLastError());
_camera_device_reset(wcd);
return -1;
}
/* Lets see if we need to set different frame dimensions */
if (wcd->frame_bitmap->bmiHeader.biWidth != frame_width ||
abs(wcd->frame_bitmap->bmiHeader.biHeight) != frame_height) {
/* Dimensions don't match. Set new frame info. */
wcd->frame_bitmap->bmiHeader.biWidth = frame_width;
wcd->frame_bitmap->bmiHeader.biHeight = frame_height;
/* We need to recalculate image size, since the capture window / driver
* will use image size provided by us. */
if (wcd->frame_bitmap->bmiHeader.biBitCount == 24) {
/* Special case that may require WORD boundary alignment. */
uint32_t bpl = (frame_width * 3 + 1) & ~1;
wcd->frame_bitmap->bmiHeader.biSizeImage = bpl * frame_height;
} else {
wcd->frame_bitmap->bmiHeader.biSizeImage =
(frame_width * frame_height * wcd->frame_bitmap->bmiHeader.biBitCount) / 8;
}
if (!capSetVideoFormat(wcd->cap_window, wcd->frame_bitmap,
format_info_size)) {
E("%s: Unable to set video format: %d", __FUNCTION__, GetLastError());
_camera_device_reset(wcd);
return -1;
}
}
if (wcd->frame_bitmap->bmiHeader.biCompression > BI_PNG) {
D("%s: Video capturing driver has reported pixel format %.4s",
__FUNCTION__, (const char*)&wcd->frame_bitmap->bmiHeader.biCompression);
}
/* Most of the time frame bitmaps come in "bottom-up" form, where its origin
* is the lower-left corner. However, it could be in the normal "top-down"
* form with the origin in the upper-left corner. So, we must adjust the
* biHeight field, since the way "top-down" form is reported here is by
* setting biHeight to a negative value. */
if (wcd->frame_bitmap->bmiHeader.biHeight < 0) {
wcd->frame_bitmap->bmiHeader.biHeight =
-wcd->frame_bitmap->bmiHeader.biHeight;
wcd->is_top_down = 1;
} else {
wcd->is_top_down = 0;
}
/* Get DC for the capturing window that will be used when we deal with
* bitmaps obtained from the camera device during frame capturing. */
wcd->dc = GetDC(wcd->cap_window);
if (wcd->dc == NULL) {
E("%s: Unable to obtain DC for %s: %d",
__FUNCTION__, wcd->window_name, GetLastError());
_camera_device_reset(wcd);
return -1;
}
/* Setup some capture parameters. */
if (capCaptureGetSetup(wcd->cap_window, &cap_param, sizeof(cap_param))) {
/* Use separate thread to capture video stream. */
cap_param.fYield = TRUE;
/* Don't show any dialogs. */
cap_param.fMakeUserHitOKToCapture = FALSE;
capCaptureSetSetup(wcd->cap_window, &cap_param, sizeof(cap_param));
}
/*
* At this point we need to grab a frame to properly setup framebuffer, and
* calculate pixel format. The problem is that bitmap information obtained
* from the driver doesn't necessarily match the actual bitmap we're going to
* obtain via capGrabFrame / capEditCopy / GetClipboardData
*/
/* Grab a frame, and post it to the clipboard. Not very effective, but this
* is how capXxx API is operating. */
if (!capGrabFrameNoStop(wcd->cap_window) ||
!capEditCopy(wcd->cap_window) ||
!OpenClipboard(wcd->cap_window)) {
E("%s: Device '%s' is unable to save frame to the clipboard: %d",
__FUNCTION__, wcd->window_name, GetLastError());
_camera_device_reset(wcd);
return -1;
}
/* Get bitmap handle saved into clipboard. Note that bitmap is still
* owned by the clipboard here! */
bm_handle = (HBITMAP)GetClipboardData(CF_BITMAP);
if (bm_handle == NULL) {
E("%s: Device '%s' is unable to obtain frame from the clipboard: %d",
__FUNCTION__, wcd->window_name, GetLastError());
CloseClipboard();
_camera_device_reset(wcd);
return -1;
}
/* Get bitmap object that is initialized with the actual bitmap info. */
if (!GetObject(bm_handle, sizeof(BITMAP), &bitmap)) {
E("%s: Device '%s' is unable to obtain frame's bitmap: %d",
__FUNCTION__, wcd->window_name, GetLastError());
EmptyClipboard();
CloseClipboard();
_camera_device_reset(wcd);
return -1;
}
/* Now that we have all we need in 'bitmap' */
EmptyClipboard();
CloseClipboard();
/* Make sure that dimensions match. Othewise - fail. */
if (wcd->frame_bitmap->bmiHeader.biWidth != bitmap.bmWidth ||
wcd->frame_bitmap->bmiHeader.biHeight != bitmap.bmHeight ) {
E("%s: Requested dimensions %dx%d do not match the actual %dx%d",
__FUNCTION__, frame_width, frame_height,
wcd->frame_bitmap->bmiHeader.biWidth,
wcd->frame_bitmap->bmiHeader.biHeight);
_camera_device_reset(wcd);
return -1;
}
/* Create bitmap info that will be used with GetDIBits. */
wcd->gdi_bitmap = (BITMAPINFO*)malloc(wcd->frame_bitmap->bmiHeader.biSize);
if (wcd->gdi_bitmap == NULL) {
E("%s: Unable to allocate gdi bitmap info", __FUNCTION__);
_camera_device_reset(wcd);
return -1;
}
memcpy(wcd->gdi_bitmap, wcd->frame_bitmap,
wcd->frame_bitmap->bmiHeader.biSize);
wcd->gdi_bitmap->bmiHeader.biCompression = BI_RGB;
wcd->gdi_bitmap->bmiHeader.biBitCount = bitmap.bmBitsPixel;
wcd->gdi_bitmap->bmiHeader.biSizeImage = bitmap.bmWidthBytes * bitmap.bmWidth;
/* Adjust GDI's bitmap biHeight for proper frame direction ("top-down", or
* "bottom-up") We do this trick in order to simplify pixel format conversion
* routines, where we always assume "top-down" frames. The trick he is to
* have negative biHeight in 'gdi_bitmap' if driver provides "bottom-up"
* frames, and positive biHeight in 'gdi_bitmap' if driver provides "top-down"
* frames. This way GetGDIBits will always return "top-down" frames. */
if (wcd->is_top_down) {
wcd->gdi_bitmap->bmiHeader.biHeight =
wcd->frame_bitmap->bmiHeader.biHeight;
} else {
wcd->gdi_bitmap->bmiHeader.biHeight =
-wcd->frame_bitmap->bmiHeader.biHeight;
}
/* Allocate framebuffer. */
wcd->framebuffer = (uint8_t*)malloc(wcd->gdi_bitmap->bmiHeader.biSizeImage);
if (wcd->framebuffer == NULL) {
E("%s: Unable to allocate %d bytes for framebuffer",
__FUNCTION__, wcd->gdi_bitmap->bmiHeader.biSizeImage);
_camera_device_reset(wcd);
return -1;
}
/* Lets see what pixel format we will use. */
if (wcd->gdi_bitmap->bmiHeader.biBitCount == 16) {
wcd->pixel_format = V4L2_PIX_FMT_RGB565;
} else if (wcd->gdi_bitmap->bmiHeader.biBitCount == 24) {
wcd->pixel_format = V4L2_PIX_FMT_BGR24;
} else if (wcd->gdi_bitmap->bmiHeader.biBitCount == 32) {
wcd->pixel_format = V4L2_PIX_FMT_BGR32;
} else {
E("%s: Unsupported number of bits per pixel %d",
__FUNCTION__, wcd->gdi_bitmap->bmiHeader.biBitCount);
_camera_device_reset(wcd);
return -1;
}
D("%s: Capturing device '%s': %d bits per pixel in %.4s [%dx%d] frame",
__FUNCTION__, wcd->window_name, wcd->gdi_bitmap->bmiHeader.biBitCount,
(const char*)&wcd->pixel_format, wcd->frame_bitmap->bmiHeader.biWidth,
wcd->frame_bitmap->bmiHeader.biHeight);
/* Try to setup capture frame callback. */
wcd->use_clipboard = 1;
if (capSetCallbackOnFrame(wcd->cap_window, _on_captured_frame)) {
/* Callback is set. Don't use clipboard when capturing frames. */
wcd->use_clipboard = 0;
}
return 0;
}
// Initialize camera input
bool CvCaptureCAM_VFW::open( int wIndex )
{
char szDeviceName[80];
char szDeviceVersion[80];
HWND hWndC = 0;
close();
if( (unsigned)wIndex >= 10 )
wIndex = 0;
for( ; wIndex < 10; wIndex++ )
{
if( capGetDriverDescription( wIndex, szDeviceName,
sizeof (szDeviceName), szDeviceVersion,
sizeof (szDeviceVersion)))
{
hWndC = capCreateCaptureWindow ( "My Own Capture Window",
WS_POPUP | WS_CHILD, 0, 0, 320, 240, 0, 0);
if( capDriverConnect (hWndC, wIndex))
break;
DestroyWindow( hWndC );
hWndC = 0;
}
}
if( hWndC )
{
capWnd = hWndC;
hdr = 0;
hic = 0;
fourcc = (DWORD)-1;
memset( &caps, 0, sizeof(caps));
capDriverGetCaps( hWndC, &caps, sizeof(caps));
CAPSTATUS status = {};
capGetStatus(hWndC, &status, sizeof(status));
::SetWindowPos(hWndC, NULL, 0, 0, status.uiImageWidth, status.uiImageHeight, SWP_NOZORDER|SWP_NOMOVE);
capSetUserData( hWndC, (size_t)this );
capSetCallbackOnFrame( hWndC, frameCallback );
CAPTUREPARMS p;
capCaptureGetSetup(hWndC,&p,sizeof(CAPTUREPARMS));
p.dwRequestMicroSecPerFrame = 66667/2; // 30 FPS
capCaptureSetSetup(hWndC,&p,sizeof(CAPTUREPARMS));
//capPreview( hWndC, 1 );
capPreviewScale(hWndC,FALSE);
capPreviewRate(hWndC,1);
// Get frame initial parameters.
const DWORD size = capGetVideoFormatSize(capWnd);
if( size > 0 )
{
unsigned char *pbi = new unsigned char[size];
if( pbi )
{
if( capGetVideoFormat(capWnd, pbi, size) == size )
{
BITMAPINFOHEADER& vfmt = ((BITMAPINFO*)pbi)->bmiHeader;
widthSet = vfmt.biWidth;
heightSet = vfmt.biHeight;
fourcc = vfmt.biCompression;
}
delete []pbi;
}
}
// And alternative way in case of failure.
if( widthSet == 0 || heightSet == 0 )
{
widthSet = status.uiImageWidth;
heightSet = status.uiImageHeight;
}
}
return capWnd != 0;
}
bool CvCaptureCAM_VFW::setProperty(int property_id, double value)
{
bool handledSize = false;
switch( property_id )
{
case CV_CAP_PROP_FRAME_WIDTH:
width = cvRound(value);
handledSize = true;
break;
case CV_CAP_PROP_FRAME_HEIGHT:
height = cvRound(value);
handledSize = true;
break;
case CV_CAP_PROP_FOURCC:
break;
case CV_CAP_PROP_FPS:
if( value > 0 )
{
CAPTUREPARMS params;
if( capCaptureGetSetup(capWnd, ¶ms, sizeof(params)) )
{
params.dwRequestMicroSecPerFrame = cvRound(1e6/value);
return capCaptureSetSetup(capWnd, ¶ms, sizeof(params)) == TRUE;
}
}
break;
default:
break;
}
if ( handledSize )
{
// If both width and height are set then change frame size.
if( width > 0 && height > 0 )
{
const DWORD size = capGetVideoFormatSize(capWnd);
if( size == 0 )
return false;
unsigned char *pbi = new unsigned char[size];
if( !pbi )
return false;
if( capGetVideoFormat(capWnd, pbi, size) != size )
{
delete []pbi;
return false;
}
BITMAPINFOHEADER& vfmt = ((BITMAPINFO*)pbi)->bmiHeader;
bool success = true;
if( width != vfmt.biWidth || height != vfmt.biHeight )
{
// Change frame size.
vfmt.biWidth = width;
vfmt.biHeight = height;
vfmt.biSizeImage = height * ((width * vfmt.biBitCount + 31) / 32) * 4;
vfmt.biCompression = BI_RGB;
success = capSetVideoFormat(capWnd, pbi, size) == TRUE;
}
if( success )
{
// Adjust capture window size.
CAPSTATUS status = {};
capGetStatus(capWnd, &status, sizeof(status));
::SetWindowPos(capWnd, NULL, 0, 0, status.uiImageWidth, status.uiImageHeight, SWP_NOZORDER|SWP_NOMOVE);
// Store frame size.
widthSet = width;
heightSet = height;
}
delete []pbi;
width = height = -1;
return success;
}
return true;
}
return false;
}
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 ;
}