How can I get Media Source Channel information from an audio clip in ExtendScript

[MARK3662717834h1]

Where can I find the information displayed in the following view from within ExtendScript:

I've looked at projectItem.getAudioChannelMapping but that just gives me the total number of channels (audioClipsNumber) and a channel type (audioChannelsType:0) which I read as "mono". This was originally a single media item with 6 internal channels and I unlinked them to get to the view above. 

I've found other posts coming close to this topic but I don't need to "revert" anything to any kind of original setup. I just want to programatically see what the dialog window above is presenting. 

[Bruce Bullis · Accepted solution]

You're right, while you can set mappings for channels, there is no ExtendScript API that allows you to get the current channel's mapping. 

No further changes to PPro's ExtendScript API are planned or scheduled; such improvements would need to wait until we move to UXP extensibility; no dates available. 

[MARK3662717834h1]

Ok thanks for the clarity on that.