On Thu, Jun 08, 2017 at 03:03:35AM -0500, Damon Lynch wrote:
> On Thu, Jun 8, 2017 at 2:50 AM, Marcus Meissner <
[hidden email]> wrote:
>
> > Hi,
> >
> > On Tue, Jun 06, 2017 at 03:02:40PM -0500, Damon Lynch wrote:
> > > Hi Marcus,
> > >
> > > The venerable Nikon D100 uses the usbscsi interface. Can more than one
> > > process access the camera simultaneously when its connected using
> > usbscsi?
> > > Or does the usbscsi interface present the same limitation as the PTP/MTP
> > > interface, i.e. only one process may access the device at a time?
> >
> > I was not aware of the D100 going over usbscsi... I have it listed here as
> > PTP over USB?
> >
> > Does it speak PTP?
> >
>
> I have no idea. I'll ask the user who uses that camera. I'll also ask him
> if gPhoto2 can access the camera while it is mounted in his file browser
> using the usbscsi interface.
Some more greps later ... it might be talking in "sierra" mode over USBSCSI, yes.
> > In general it will most likely be single program access.
> >
> > > As an aside, I don't know if it's a known characteristic or not, but a
> > > Nikon D800, there are no storage descriptions returned by libgphoto2. At
> > > least that was the case with one user; I don't know if it's a widespread
> > > phenomena with the D800.
> >
> > What storage description specifically? Got with what API / cmdline?
> >
>
> I found this problem of the missing storage description because my
> application (Rapid Photo Downloader, which uses Jim Easterbrook's python
> bindings) collects storage info using the API, and it was getting an empty
> result for storageinfo_description. Here is some gPhoto2 output, from the
> command line:
It is still not clear.
> $ gphoto2 --storage-info
> [Storage 0]
>
> label=NIKON D800 [Slot 1]
> basedir=/store_00010001
> access=2 Nur Lesen und Bilder löschen
> type=4 Entfernbarer RAM
> fstype=4 Kamera Struktur (DCIM)
> totalcapacity=7878464 KB
> free=7393472 KB
> freeimages=1604
> [Storage 1]
> label=NIKON D800 [Slot 2]
> basedir=/store_00020001
> access=2 Nur Lesen und Bilder löschen
> type=4 Entfernbarer RAM
> fstype=4 Kamera Struktur (DCIM)
> totalcapacity=31248384 KB
> free=13976416 KB
> freeimages=179
If the description is empty, it will not get reported... the software should handle it, the GP_STORAGEINFO_DESCRIPTION
will not be set then.
Ciao, Marcus
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