initializing an openni::VideoStream object without kinect plugged in - c++

Question

I'm using openNI2 in order to capture kinect depth data.
in order to initialize m_depth, i have to use some methods of the class openni::VideoStream, like this:
openni::VideoStream m_depth;
openni::Device device;
const char* device_uri;
openni::Status ret;
device_uri = openni::ANY_DEVICE;
ret = openni::STATUS_OK;
ret = openni::OpenNI::initialize();
ret = device.open(device_uri);
ret = m_depth.create(device, openni::SENSOR_DEPTH);
The is that i want to initialize the object "m_depth" without the kinect plugged in. of course i can't because the methods of this class, like "m_depth.create" doesn't work.
There is a way to do that?

Answer 1

You can try using an .ONI file (a dummy could work) to init
Quoting the OpenNI2 documentation
Later, this file can be used to initialize a file Device, and used to
play back the same data that was recorded.
Opening a file device is done by passing its path as the uri to the
Device::open() method
So, you can change this line
device_uri = openni::ANY_DEVICE;
to the path of the dummy ONI file...
I don't think in OpenNI2 there is another way to create a depth stream, and actually it doesn't make sense to create a stream without a camera unless you want to use the coordinate converter class...
In openni 1.x you can try using mockdepth (though I didn't managed to make it work correctly)