Sound Card

Deliverance · 02-17-2006, 03:13 PM

I don't know if this is classified as C++, but is there a way with C++ code to change the line in function to the recording jack and vice-versa on a laptop/PC? Any help would be appreciated, thanks

DJMaze · 02-17-2006, 03:18 PM

"line in function to the recording jack" ehm isn't that the same blue colored connector?

Deliverance · 02-19-2006, 09:35 AM

Let me rephrase, what I want to attempt is to switch the function between the recording jack and input jack on a sound card. There are only two inputs on the jack, an input and recording. On a laptop i picked up recently, I've noticed that the input doesn't seem to work, I believe there is a bent wire which is grounding the connection, disabling both the internal speakers and any other speakers I try to plug into it. I know the sound card isn't completely malfunctioning since if I fiddle with a 1/8'' jack, if I plug it in partially and move it around, I can re-enable the internal speakers, but only for the period of time that I am holding the cable in place. If I were to switch the function of the recording line with the input line, wouldn't the short on the input just bypass as the recording jack wouldn't be active, and allow me to at least use the internal speakers?

Deliverance · 02-19-2006, 09:37 AM

I only ask this in the C++ forum as I believe that within the driver information there must be a way to distinguish which connection is made, and as such which action to initiate by the sound card. I'm wondering if there would be a way to reverse the function that the sound card is doing (making it think that the jacks are as they were, but their actions reversed)?

DJMaze · 02-20-2006, 04:07 AM

ah you mean the pink (microphone) and blue (line-in). They are both recording options.
Most integrated soundcards have both 5.1 and stereo sound options.
In your bios or soundcard software you can switch and when its set to 5.1 it has no recording. Did you check that?

And yes it is possible to write in any language a driver that changes the behavior.

Deliverance · 02-27-2006, 01:45 PM

I've checked the bios, doesn't allow me to switch it from there, basically what I'm trying to do is:

The input for which I plug in speakers, headphones, etc i want reversed with the recording jack.

The sound card itself only has these two inputs, I want them switched because the piece of metal making a connection is bent and I believe it's shorting my internal speakers.

Can anyone help me write a driver update to reverse the role of the two jacks?

teknomage1 · 02-27-2006, 02:42 PM

If you're on windows, that's probably beyond the scope of most people on this forum, since the windows drivers are generally written by the manufacturers, who don't generally disclose all of the information about the device.
If you were on something like linux or bsd where the drivers were open source and you might only have to make some slight changes it would probably be much more feasible.

DJMaze · 02-27-2006, 04:52 PM

Quote:

Originally Posted by Deliverance

The input for which I plug in speakers, headphones, etc i want reversed with the recording jack.

The sound card itself only has these two inputs, I want them switched because the piece of metal making a connection is bent and I believe it's shorting my internal speakers.

Wow that's very chip dependant since most chips have a design with explicit input and output pins which you can't reverse.
For example see the sheet of the ICEnsemble/VIA Envy24 chip http://icensemble.com/products/pdf/envy24pb.pdf

I'd sugest you replace the connector or the whole card

Deliverance · 02-28-2006, 08:54 PM

Gotcha, that's all the info I needed...*sigh*, I guess I'll go do some shopping.

Thanks for the info though, it's much appreciated.