In article 1103_1006970007@peter, firstname.lastname@example.org says…
has anyone tested the wintv pci card under qnx 6.10, l just got told that the DDK kit is a non starter for such a project. l checked thru the DDK and found some
tv / video tuner / capture programms for the voodoo3 cards. my problem is why can l not use the same skeleton for my wintv card. If it really does not work with the help
of the gDDk, which tv / video cards can l try to implement drivers for (that is using the examples given in the ddk), and not yet implemented for qnx without having to
start from scratch.
If none, and l’m really to start from zero, what type of resource manager would be a good starting point. can l use the dev/null type of thing even though l can’t figure out
what type of functions l could override in the connect and I/O tables. throw some light please.
Any help and suggestions will be strongly appreciated.
You can use the capture programs for the voodoo3 cards as starter
skeletons. The problem comes about when you want to use some API for a
program to control the activity of the video capture.
Basically, the voodoo3 code assumes a framework (in the OS) for such
devices that will not exist (apparently) in the future. In the future, a
different framework will be present. So - you can use the DDK code as a
skeleton, you just cannot assume that the API as shown in that code will
exist for very long. There may be other issues, too. Such as the DDK
example may have the capture device and the video display device on the
same physical PCI card, with internal data pathways for the digitized
video signal to go to the graphics card.
If you want to design your own API - which ioctl() calls mean what to the
capture card - then you have designed your own API, and your application
programs - the ones that set the channel, capture resolution, etc., will
have to use your custom API. But they will need re-work before they are
compatible with whatever future video capture API from QSSL is in the
works. If you want the video and sound to go to your video and sound
cards, you also have to find a way to convey the video and sound data to
I (for fun) started to write a capture card program for QNX6 before they
even had a graphics DDK available. I did not get very far - basically I
could read/write the srom (want to be very careful writing it!), change
the tuner frequency, and stalled in the part where I was enabling the
sound on the card - had some documentation/debugging/frustration issues
that shut my interest down.
I never even got close to getting a video stream from the card.
Corman Technologies Inc.