[ome-users] Small C++ client

[Bernhard Holländer]

Hi Mario,

I know this is a little bit too late but maybe you're still working on
your client. What I do to get the raw pixel data looks similar to
this:

// session from client::createSession
omero::api::RawPixelStorePrx store = session->createRawPixelStore();
// assuming you have retrieved the PixelIPtr using the Gateway
store->setPixelsId(pixels_->getId()->getValue(), false);
// get a x-y plane, z,t,c boundaries from PixelsI::getSizeC/T/Z
Ice::ByteSeq data = store->getPlane(0, 0, 0); // z,c,t
// data is acutally a std::vector<unsigned char>

Now you would need to reinterprete this raw data:
1. get byte width, is signed, is float from the PixelsI object
 -> this tells you how to interpret the bytes
e.g byte width = 2, unsigned, not flaot -> unsigned short

2. cast items to target type e.g unsigned short: cast every two items
to unsigned short
2a. depending on your platform you need to swap the endianess of the
raw bytes, because they are always returned as big-endian (how to swap
depends on the byte width)

3. turn 1-d vector in 2-d plane, with the the information from
PixelsI::getSizeX/Y

Even if it comes late, I hope that it helps!

Best wishes! Bernhard


On Tue, Apr 21, 2009 at 3:00 PM, Mario Valle <mvalle at cscs.ch> wrote:
> Dear all,
> here is my first, small C++ client.
> It is still missing the true image data retrieval, but I hope this is not
> complex.
> Suggestions, corrections and comments are welcome.
> Ciao!
>                        mario
>
> --
> Ing. Mario Valle
> Data Analysis and Visualization Group            |
> http://www.cscs.ch/~mvalle
> Swiss National Supercomputing Centre (CSCS)      | Tel:  +41 (91) 610.82.60
> v. Cantonale Galleria 2, 6928 Manno, Switzerland | Fax:  +41 (91) 610.82.82
>
>
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