/*
* call-seq:
* CvCapture.open(<i>[dev = -1]</i>)
*
* Reading video stream from the specified file or camera device.
* If <i>dev</i> is string (i.e "stream.avi"), reading video stream from file.
* If <i>dev</i> is number or symbol(include CvCapture::INTERFACE),
* reading video stream from camera.
* Currently two camera interfaces can be used on Windows:
* * Video for Windows(VFW)
* * Matrox Imaging Library(MIL)
* and two on Linux
* * V4L
* * FireWire(IEEE1394).
* If there is only one camera or it does not matter what camera to use <i>nil</i> may be passed.
*/
VALUE
rb_open(int argc, VALUE *argv, VALUE self)
{
VALUE device, i;
rb_scan_args(argc, argv, "01", &device);
CvCapture *capture = 0;
switch (TYPE(device)) {
case T_STRING:
capture = cvCaptureFromFile(StringValueCStr(device));
break;
case T_FIXNUM:
capture = cvCaptureFromCAM(FIX2INT(device));
break;
case T_SYMBOL:
i = rb_hash_aref(rb_const_get(rb_class(), rb_intern("INTERFACE")), device);
if (NIL_P(i))
rb_raise(rb_eArgError, "undefined interface.");
capture = cvCaptureFromCAM(NUM2INT(i));
break;
case T_NIL:
capture = cvCaptureFromCAM(CV_CAP_ANY);
break;
}
if (!capture)
rb_raise(rb_eStandardError, "Invalid capture format.");
return Data_Wrap_Struct(rb_klass, 0, free, capture);
}
VALUE
new_object(CvArr *arr, int is_binary = 0)
{
VALUE object = rb_allocate(rb_class());
cvMoments(arr, CVMOMENTS(object), is_binary);
return object;
}
/*
* call-seq:
* CvCapture.open(<i>[dev = -1]</i>)
*
* Reading video stream from the specified file or camera device.
* If <i>dev</i> is string (i.e "stream.avi"), reading video stream from file.
* If <i>dev</i> is number or symbol(include CvCapture::INTERFACE),
* reading video stream from camera.
* Currently two camera interfaces can be used on Windows:
* * Video for Windows(VFW)
* * Matrox Imaging Library(MIL)
* and two on Linux
* * V4L
* * FireWire(IEEE1394).
* If there is only one camera or it does not matter what camera to use <i>nil</i> may be passed.
*/
VALUE
rb_open(int argc, VALUE *argv, VALUE self)
{
VALUE device;
rb_scan_args(argc, argv, "01", &device);
CvCapture *capture = 0;
try {
switch (TYPE(device)) {
case T_STRING:
capture = cvCaptureFromFile(StringValueCStr(device));
break;
case T_FIXNUM:
capture = cvCaptureFromCAM(FIX2INT(device));
break;
case T_SYMBOL: {
VALUE cap_index = rb_hash_lookup(rb_const_get(rb_class(), rb_intern("INTERFACE")), device);
if (NIL_P(cap_index))
rb_raise(rb_eArgError, "undefined interface.");
capture = cvCaptureFromCAM(NUM2INT(cap_index));
break;
}
case T_NIL:
capture = cvCaptureFromCAM(CV_CAP_ANY);
break;
}
}
catch (cv::Exception& e) {
raise_cverror(e);
}
if (!capture)
rb_raise(rb_eStandardError, "Invalid capture format.");
return Data_Wrap_Struct(rb_klass, 0, cvcapture_free, capture);
}
VALUE
new_object(int event, int x, int y, int flags)
{
VALUE object = rb_allocate(rb_class());
MouseEvent *mouseevent = MOUSEEVENT(object);
mouseevent->point.x = x;
mouseevent->point.y = y;
mouseevent->event = event;
mouseevent->flags = flags;
return object;
}
