X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=scripts%2Famp3.lua;h=186ece97312a6fd7d6eebd72140c65956c0d49b4;hb=9ff94edd6eefd441cb3f277c14eaca55ca2b9c1d;hp=2f246a252dd8637c02164c7a7a0694582faea30e;hpb=1473c2d36460707f6484fe5a0f1d913fbb8a77e0;p=ardour.git

diff --git a/scripts/amp3.lua b/scripts/amp3.lua
index 2f246a252d..186ece9731 100644
--- a/scripts/amp3.lua
+++ b/scripts/amp3.lua
@@ -1,6 +1,7 @@
 ardour {
 	["type"]    = "dsp",
 	name        = "Simple Amp III",
+	category    = "Example",
 	license     = "MIT",
 	author      = "Robin Gareus",
 	email       = "robin@gareus.org",
@@ -31,15 +32,15 @@ end
 -- This is as efficient as Ardour doing it itself in C++
 -- Lua function overhead is negligible
 --
--- this also exemplifies the /simpler/ way of letting ardour to
--- the channel and offset mapping.
+-- this also exemplifies the /simpler/ way of delegating the
+-- channel-mapping to ardour.
 
 function dsp_run (ins, outs, n_samples)
 	local ctrl = CtrlPorts:array() -- get control port array (read/write)
 	local gain = ARDOUR.DSP.dB_to_coefficient (ctrl[1])
-	assert (#ins == #outs) -- ensure that we can run in-place
+	assert (#ins == #outs) -- ensure that we can run in-place (channel count matches)
 	for c = 1,#ins do
-	--for c in pairs (ins) do -- also works, slightly less effective
+		assert (ins[c]:sameinstance(outs[c])) -- check in-place
 		ARDOUR.DSP.apply_gain_to_buffer (ins[c], n_samples, gain); -- process in-place
 	end
 end