|
|
Posted by curious314159 on 11/12/06 20:13
Of course, please let me be more specific to address Richard's
questions:
CMU's firewire device driver (For Windows Operating System) :
"A C++ software library for cameras that comply with the 1394 Digital
Camera Specification as published by the 1394 Trade Association
www.1394ta.org. It is a fast, easy way to gain direct access to camera
imagery and direct control of camera features"
Reference: http://www.cs.cmu.edu/~iwan/1394/
Condition of "sufficiency" in my post refers to the device generating
the firewire signal (i.e. DV Camera or Canopus box) being fully
compatible
with the 1394 Digital Camera Specification specified by the 1394 Trade
Association.
Firewire cameras I use (NOT camcorders) do comply with these specs
as I can assign CMU's device drivers for them and then access them
through my c/c++ program that uses CMU's library calls.
My Sony DV camcorder doesn't act exactly like a firewire camera: if you
force assign CMU's firewire device drivers and try to access it as a
firewire
device the result is a failure, device is not recognized/not responsive
to
device driver's calls.
Not knowing the specifics of the IEEE 1394
camera protocol, I reason the DV devices maybe different than generic
firewire cameras in the way they are accessed by various firewire
device drivers (CMU vs. Windows). So I would like to find out
ultimately:
Is there an Analog to Firewire conversion device that will act exactly
as if it was a firewire camera compliant with the 1394 Digital Camera
specifications on the Windows side (when I try to access the
image content from my program)?
Ben
Richard Crowley wrote:
> <curious314159@yahoo.com> wrote ...
> > Thanks, enormously insightful so far:
> > pass thru via DV camcorders A/V In DV out? Great idea, but
> > I worry however, if that is sufficient
>
> Sufficient for what? You didn't state your requrements
> or application(s)? (Even after we asked you.) Especially
> since you seem to have an unusual application here???
>
> > and if there are restrictions associated with DV?
>
> Restrictions? What kind of "restrictions" are you talking about?
>
> > In particular I use CMU's generic
> > 1394 firewire camera drivers to access the image content
> > in my C/C++ programs, so the firewire output needs to be
> > compatible with standard firewire protocols.
>
> The DV-over-Firewire stream/protocol seems quite
> standardized. Have you seen any issues?
>
> > Does anyone know if Canopus or ADS Pyro converters
> > would work with the CMU's generic Firewire camera drivers?
> > (Can you capture the image stream the are putting out with generic
> > firewire drivers?)
>
> We've never heard anyone complaining that certain drivers
> would or would not work with camcorders vs. the standalone
> converter boxes.
>
> If you want us to understand what *you* mean by "CMU"
> you would do well to define it.
Navigation:
[Reply to this message]
|