ardour/ardour
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Fix DSP::process_map edge-case (unconnected inputs)

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previously this could result in signals being passed though
(in-place) when inputs were disconnected.
This commit is contained in:
Robin Gareus 2020-02-06 21:40:02 +01:00
parent f2980e5f05
commit 5fb38c7c53
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
1 changed files with 12 additions and 0 deletions
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12
libs/ardour/dsp_filter.cc
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@ -78,6 +78,7 @@ void
ARDOUR::DSP::process_map (BufferSet* bufs, const ChanMapping& in, const ChanMapping& out, pframes_t nframes, samplecnt_t offset, const DataType& dt)
{
const ChanMapping::Mappings& im (in.mappings());
const ChanMapping::Mappings& om (out.mappings());
for (ChanMapping::Mappings::const_iterator tm = im.begin(); tm != im.end(); ++tm) {
if (tm->first != dt) { continue; }
@ -100,6 +101,17 @@ ARDOUR::DSP::process_map (BufferSet* bufs, const ChanMapping& in, const ChanMapp
}
}
/* reverse lookup (in case input map is empty */
for (ChanMapping::Mappings::const_iterator tm = om.begin(); tm != om.end(); ++tm) {
if (tm->first != dt) { continue; }
for (ChanMapping::TypeMapping::const_iterator i = tm->second.begin(); i != tm->second.end(); ++i) {
bool valid;
in.get_src (dt, i->first, &valid);
if (!valid) {
bufs->get_available (dt, i->second).silence (nframes, offset);
}
}
}
}
LowPass::LowPass (double samplerate, float freq)