[Audacity-devel] Recording Channels

[Martyn S. <mar...@go...>]

Hi

I don't have a device with more than 2 recording channels, but I'm 
offered more in prefs -> Audio I/O ->Recording -> Channels.

Is the following a good idea?

diff -u -r1.55 AudioIOPrefs.cpp
--- AudioIOPrefs.cpp	23 May 2008 16:01:24 -0000	1.55
+++ AudioIOPrefs.cpp	10 Jun 2008 23:24:08 -0000
@@ -76,6 +76,7 @@
     int nDevices = Pa_CountDevices();
  #endif

+   int numChannels = 0; // find max no. of record channels available
     for(j=0; j<nDevices; j++) {
        const PaDeviceInfo* info = Pa_GetDeviceInfo(j);
        Name = DeviceName(info);
@@ -87,11 +88,12 @@
        if (info->maxInputChannels > 0) {
           mmRecordNames.Add( Name );
           mmRecordLabels.Add( Label );
+         if (info->maxInputChannels > numChannels)
+            numChannels = info->maxInputChannels;
        }
     }

     // Channel counts, mono, stereo etc...
-   const int numChannels = 16;
     for(int c=0; c<numChannels; c++)
     {
        mmChannelNames.Add(  wxString::Format(wxT("%d"), c+1));

Not perfect, I know, but better than we have?
Martyn