From 6090a26f174a0380450884496a5463171600d25a Mon Sep 17 00:00:00 2001
From: dvs1
Date: Thu, 31 Oct 2024 16:03:33 +1000
Subject: Filter out non audio devices and Loopback type things.

---
 aataaj.lua | 48 ++++++++++++++++++++++++++----------------------
 1 file changed, 26 insertions(+), 22 deletions(-)

(limited to 'aataaj.lua')

diff --git a/aataaj.lua b/aataaj.lua
index 99cf9ff..5f043a7 100755
--- a/aataaj.lua
+++ b/aataaj.lua
@@ -147,29 +147,33 @@ print('Scanning for audio devices.')
 local cards = __'ls -d1 /proc/asound/card[0-9]*':noErr():Do()
 for  i,l in ipairs(cards.lines) do
     local f, e = io.open(l .. '/id', 'r')
+    local g, h = io.open(l .. '/codec#0', 'r')	-- Test to see if it's a real audio device.  I think this is a real test.  lol
+    local a, b = io.open(l .. '/stream0', 'r')	-- Test to see if it's a real audio device.  I think this is a real test.  lol
     if nil == f then print('Could not open ' .. l .. '/id - ' .. e) else
-	local n = f:read('*a'):sub(1, -2)
-	Cards[n] = {path = l, name = n, devs = {}, captureDevs = {}, playbackDevs = {}, card=i}
-	cnt = cnt + 1
-	if 'Loopback' ~= Cards[n]['name'] then
-	    Cards[n]['capture'] = __('ls -d1 ' .. l .. '/pcm[0-9]*c*'):noErr():Do()
-	    for  j,c in ipairs(Cards[n]['capture'].lines) do
-		local m = c:match('.*pcm(%d+).*')
-		Cards[n]['captureDevs'][j] = m
-		Cards[n]['devs'][m] = m
-		print('\tFound capture device: ' .. Cards[n]['name'] .. '\tDEVICE: ' .. Cards[n]['captureDevs'][j] .. ' ' .. m)
-		io.flush()
-	    end
-	    Cards[n]['playback'] = __('ls -d1 ' .. l .. '/pcm[0-9]*p*'):noErr():Do()
-	    for  j,p in ipairs(Cards[n]['playback'].lines) do
-		local m = p:match('.*pcm(%d+).*')
-		Cards[n]['playbackDevs'][j] = m
-		Cards[n]['devs'][m] = m
-		print('\tFound playback device ' .. Cards[n].card - 1 .. ' : ' .. Cards[n]['name'] .. '\tDEVICE: ' .. Cards[n]['playbackDevs'][j] .. ' ' .. m)
-		io.flush()
-		if 'JACK' ~= arg[1] then
-		    print('\t\tALSA_CARD=' .. Cards[n].card - 1 .. ' ' .. speaker .. ' "Found playback device ' .. Cards[n].card - 1 .. ' : ' .. Cards[n]['name'] .. ' DEVICE: ' .. Cards[n]['playbackDevs'][j] .. ' ' .. m .. '"')
-		    io.flush()
+	if (nil ~= g) or (nil ~= a) then
+	    local n = f:read('*a'):sub(1, -2)
+	    Cards[n] = {path = l, name = n, devs = {}, captureDevs = {}, playbackDevs = {}, card=i}
+	    cnt = cnt + 1
+	    if 'Loopback' ~= Cards[n]['name'] then
+		Cards[n]['capture'] = __('ls -d1 ' .. l .. '/pcm[0-9]*c*'):noErr():Do()
+		for  j,c in ipairs(Cards[n]['capture'].lines) do
+		    local m = c:match('.*pcm(%d+).*')
+		    Cards[n]['captureDevs'][j] = m
+		    Cards[n]['devs'][m] = m
+		    print('\tFound capture device: ' .. Cards[n]['name'] .. '\tDEVICE: ' .. Cards[n]['captureDevs'][j] .. ' ' .. m)
+--		    io.flush()
+		end
+		Cards[n]['playback'] = __('ls -d1 ' .. l .. '/pcm[0-9]*p*'):noErr():Do()
+		for  j,p in ipairs(Cards[n]['playback'].lines) do
+		    local m = p:match('.*pcm(%d+).*')
+		    Cards[n]['playbackDevs'][j] = m
+		    Cards[n]['devs'][m] = m
+		    print('\tFound playback device ' .. Cards[n].card - 1 .. ' : ' .. Cards[n]['name'] .. '\tDEVICE: ' .. Cards[n]['playbackDevs'][j] .. ' ' .. m)
+--		    io.flush()
+		    if 'JACK' ~= arg[1] then
+--			print('\t\tALSA_CARD=' .. Cards[n].card - 1 .. ' ' .. speaker .. ' "Found playback device ' .. Cards[n].card - 1 .. ' : ' .. Cards[n]['name'] .. ' DEVICE: ' .. Cards[n]['playbackDevs'][j] .. ' ' .. m .. '"')
+--			io.flush()
+		    end
 		end
 	    end
 	end
-- 
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