Audio device list under Windows

[Myzhar]

Hi all,

is it possible to get a list of available audio devices under windows? 

I need it to populate a combo box and let the user choose between different choices.

Thank you
Walter

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[Tim Müller]

On Fri, 2016-11-18 at 13:45 +0100, Walter Lucetti wrote:

Hi Walter,

> is it possible to get a list of available audio devices under
> windows?  I need it to populate a combo box and let the user choose
> between different choices.

The API to use for that is GstDeviceMonitor, but I don't think the
windows audio plugins implement the stuff for that (GstDeviceProvider).
Patches welcome :)

Cheers
 -Tim

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[Myzhar]

Hi Tim,

thank you for the reply. I was just reading the documentation about GstDeviceMonitor and I tested "gst-device-monitor-1.0.exe", but it enumerates only webcams, no audio devices.

I'm not yet ready to add a patch for Windows GStreamer... I'm a Linux user and I must use GStreamer under Windows only because a client wants an application to be cross-platform.

I need to find an alternative method to enumerate the audio devices with a name that GStreamer can understand as device-name parameter for DirectShow or DirectX audio source.

What a mess ^_^

Thank you

Walter

2016-11-18 15:30 GMT+01:00 Tim Müller <[hidden email]>:

On Fri, 2016-11-18 at 13:45 +0100, Walter Lucetti wrote:

Hi Walter,

> is it possible to get a list of available audio devices under
> windows?  I need it to populate a combo box and let the user choose
> between different choices.

The API to use for that is GstDeviceMonitor, but I don't think the
windows audio plugins implement the stuff for that (GstDeviceProvider).
Patches welcome :)

Cheers
 -Tim

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Tim Müller, Centricular Ltd - http://www.centricular.com
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[Myzhar]

I found an alternative solution using the RtAudio library:
http://www.music.mcgill.ca/~gary/rtaudio/index.html

I compiled it with VisualStudio 2012 without any kind of issue and I can probe the devices installed on the system and get the correct "device-name" to be used with "directsoundsrc" to select the input device.

RtAudio is opensource and the code is available on Github:
https://github.com/thestk/rtaudio

I suggest to GStreamer developers to get the procedure to enumerate devices from here:
https://github.com/thestk/rtaudio/blob/master/RtAudio.cpp

Walter

[Myzhar]

Hi all,

if someone is interested in this issue I discovered another issue related to "device-name" in Windows.

The "device enumeration" made with DirectSound returns the full device description, but GStreamer to enumerate internally the available devices uses a WINAPI that returns only the first 32 bytes of the device description.

You can verify this issue using debug-level=4.

So to be sure to match the correct device-name you need to trim it to the first 32 bytes.

Walter