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Make panner tolerate 0 audio inputs (fix #4353).

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git-svn-id: svn://localhost/ardour2/branches/3.0@10194 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
David Robillard
2011-10-07 16:30:27 +00:00
parent 2f169b181f
commit 212de13d42
1 changed files with 8 additions and 0 deletions
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8
libs/ardour/panner_shell.cc
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@@ -271,6 +271,14 @@ PannerShell::distribute_no_automation (BufferSet& inbufs, BufferSet& outbufs, pf
void
PannerShell::run (BufferSet& inbufs, BufferSet& outbufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes)
{
if (inbufs.count().n_audio() == 0) {
/* Input has no audio buffers (e.g. Aux Send in a MIDI track at a
point with no audio because there is no preceding instrument
*/
outbufs.silence(nframes, 0);
return;
}
if (outbufs.count().n_audio() == 0) {
// Failing to deliver audio we were asked to deliver is a bug
assert(inbufs.count().n_audio() == 0);