NMC Internal TV?

**NiN^_^NiN** · 06-03-2005, 05:53 AM

Now this is something i want netsuo to have builtin to NMC but im not just saying give me without any info for him

Now i know you like using windows calls so besides VB dependices thats all you need to run NMC.

Well i've been trying to create a app to embed into NMC for my TV card and i thought id see what you think about doing this.

now from win 2k to XP windows uses a WDM driver for all imaging devices and these can be called from applications to have control over them.

Now win 9x doesn't do this if i remember corectly but it might have im not sure.

Cause you like to do this netsuo you can do this and all the person needs is to have a tv card with its drivers installed to use this.

Now there is a problem of course

I've been trying to change channels in the external program but i can't without a ugly windows box with a crap interface to change channels.

Now xp with sp1 had a new function which lets you set a tv channel to view.

But this doesnt help people with win 2k and xp

I found this that shows u how to manually set the khz of the channels you want
http://www.thecodeproject.com/audio/...neTVTuning.asp

Now its in c# and i've read it and reread it and i have no idea how to use it in VB6

i just can't get the basics of what he's doing but im not that good at VB

but this means tv with the ability to change channels is possible

But there is a downside windows sets what WDM capture device to use and if you using a webcam on the pc then whatever you use to view the cam will be showing the TV

you can select it from a list for the specific program to view that device without changing the windows setting on which device to use as standard

But this isn't a great approach for NMC to have it embedded

If you could even help me with the TV tuning code it would help if you don't want to spend time implamenting it into NMC.

But this is what you wanted if you were to implement it into NMC.

Maybe you could use this code to show a webcam in NMC if thats a feature you would like to have (replacing the viz with webcam image from the front or back of the car perhaps)

But yeah i'v got some VB code on this so if it is handy for you i'll send it to you

**RoyN** · 06-03-2005, 02:44 PM

Yes, TV would be very nice to have builtin... problem of course is supporting many different cards... I suppose if they all had SDKs, then it might be a bit easier...

Nin, have you given any thought to Radio? have you seen anything about it?

**NiN^_^NiN** · 06-03-2005, 11:00 PM

this does support all tv cards it uses WDM which all tv cards use to display video in windows (same with webcams) so if the tv card is installed into windows then you can use WDM to view the tv and tune to what channel you want.

All devices need to use WDM its the standard so this lets any tv card work

only problem is as i mentioned trying to figure out code to change channels

**RoyN** · 06-04-2005, 07:10 PM

NiN, are you sure that all cards comply to the standard tightly?

Why is there so much incomatiblity around with the drivers and software for tv and especially radio? (Radio uses WDM too?)

**NiN^_^NiN** · 06-05-2005, 09:18 AM

radio is totally different WDM is the standard for Video and Audio but for FM most cards have there own software which does different things to use FM from the TV card.

I only know how to get video out of the card

the driver for each card uses WDM (i dont think any cards don't use WDM as its the way windows talks to the cards) and each card lets you select if you want to see the TV turner or the composite in etc.

the drivers set the way the card works so WDM can use it's commands and the driver translates it to what commands the card takes.

Don't quote me on how that works but all cards that conform to WDM standard work and to my knowledge its almost all cards available