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VST3: query plugin's BusArrangements

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This fix an issue in case a given plugin does not
support zero or less than expected numChannels.
This commit is contained in:
Robin Gareus 2023-03-17 15:12:36 +01:00
parent 6cb90471fe
commit 03263950b7
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
1 changed files with 20 additions and 15 deletions
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35
libs/ardour/vst3_plugin.cc
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@ -2184,26 +2184,31 @@ VST3PI::enable_io (std::vector<bool> const& ins, std::vector<bool> const& outs)
_processor->setBusArrangements (sa_in.size () > 0 ? &sa_in[0] : &null_arrangement, sa_in.size (),
sa_out.size () > 0 ? &sa_out[0] : &null_arrangement, sa_out.size ());
#ifndef NDEBUG
DEBUG_TRACE (DEBUG::VST3Config, string_compose ("VST3PI::enable_io: setBusArrangements ins = %1 outs = %2 | rv = %3\n", sa_in.size (), sa_out.size (), rv));
if (DEBUG_ENABLED (DEBUG::VST3Config)) {
for (int32 i = 0; i < _n_bus_in; ++i) {
Vst::SpeakerArrangement arr;
if (_processor->getBusArrangement (Vst::kInput, i, arr) == kResultOk) {
int cc = Vst::SpeakerArr::getChannelCount (arr);
DEBUG_TRACE (DEBUG::VST3Config, string_compose ("VST3: Input BusArrangements: %1 chan: %2 bits: %3%4\n", i, cc, std::hex, arr));
}
}
for (int32 i = 0; i < _n_bus_out; ++i) {
Vst::SpeakerArrangement arr;
if (_processor->getBusArrangement (Vst::kOutput, i, arr) == kResultOk) {
int cc = Vst::SpeakerArr::getChannelCount (arr);
DEBUG_TRACE (DEBUG::VST3Config, string_compose ("VST3: Output BusArrangements: %1 chan: %2 bits: %3%4\n", i, cc, std::hex, arr));
/* https://steinbergmedia.github.io/vst3_doc/vstinterfaces/classSteinberg_1_1Vst_1_1IAudioProcessor.html#ad3bc7bac3fd3b194122669be2a1ecc42 */
for (int32 i = 0; i < _n_bus_in; ++i) {
Vst::SpeakerArrangement arr;
if (_processor->getBusArrangement (Vst::kInput, i, arr) == kResultOk) {
int cc = Vst::SpeakerArr::getChannelCount (arr);
DEBUG_TRACE (DEBUG::VST3Config, string_compose ("VST3PI: Input BusArrangements: %1 chan: %2 bits: %3%4\n", i, cc, std::hex, arr));
assert (cc <= _bus_info_in[i].n_chn);
if (cc <= _bus_info_in[i].n_used_chn) {
_bus_info_in[i].n_used_chn = cc;
}
}
}
for (int32 i = 0; i < _n_bus_out; ++i) {
Vst::SpeakerArrangement arr;
if (_processor->getBusArrangement (Vst::kOutput, i, arr) == kResultOk) {
int cc = Vst::SpeakerArr::getChannelCount (arr);
DEBUG_TRACE (DEBUG::VST3Config, string_compose ("VST3PI: Output BusArrangements: %1 chan: %2 bits: %3%4\n", i, cc, std::hex, arr));
assert (cc <= _bus_info_out[i].n_chn);
if (cc <= _bus_info_out[i].n_chn) {
_bus_info_out[i].n_used_chn = cc;
}
}
}
#endif
if (was_active) {
activate ();