This is libptp2!
This library is under developement yet.
Attached example program allows downloading pictures from camera.
To build download and instal libusb (libusb.sf.net), then type:
make
After proper building you can use example program as follows:
./dx3500 vendorID ProductID
To obtain vendorID and ProductID read your dmesg.
For example:
# dmesg
(...)
Product: KODAK DX3500 Digital Camera
usb.c: unhandled interfaces on device
usb.c: USB device 65 (vend/prod 0x40a/0x500) is not claimed by any active driver
vendorID=0x40a, productID=0x500;
Enjoy!