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VST3: fix bus configuration/connections

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This handles the case where only part of a bus' ports are
connected. This can happen when a given speaker configuration
is not directly accepted, and the plugin provides more I/O than
requested.
This commit is contained in:
Robin Gareus
2025-12-05 23:11:20 +01:00
parent 8943e28931
commit 605de3eef4
1 changed files with 8 additions and 2 deletions
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10
libs/ardour/vst3_plugin.cc
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@@ -351,15 +351,21 @@ VST3Plugin::request_bus_layout (ChanCount const& in, ChanCount const& aux_in, Ch
bool
VST3Plugin::reconfigure_io (ChanCount in, ChanCount aux_in, ChanCount out)
{
DEBUG_TRACE (DEBUG::VST3Config, string_compose ("VST3Plugin::reconfigure_io in: %1 aux: %2 out: %3 ; n_in=%4 n_out=%5\n",
in, aux_in, out, _plug->n_audio_inputs (), _plug->n_audio_outputs ()));
assert (_plug->n_audio_inputs () >= in.n_audio () + aux_in.n_audio ());
assert (_plug->n_audio_outputs () >= out.n_audio ());
_connected_inputs.clear ();
_connected_inputs.resize (in.n_audio () + aux_in.n_audio ());
_connected_inputs.flip ();
_connected_inputs.resize (_plug->n_audio_inputs ());
_connected_outputs.clear ();
_connected_outputs.resize (out.n_audio ());
_connected_outputs.flip ();
DEBUG_TRACE (DEBUG::VST3Config, string_compose ("VST3Plugin::reconfigure_io %1 %2 %3\n", in, aux_in, out));
_connected_outputs.resize (_plug->n_audio_outputs ());
_plug->enable_io (_connected_inputs, _connected_outputs);
return true;