diff options
Diffstat (limited to 'libs/ardour/panner_shell.cc')
| -rw-r--r-- | libs/ardour/panner_shell.cc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libs/ardour/panner_shell.cc b/libs/ardour/panner_shell.cc index fae60c3458..8c0236bd9f 100644 --- a/libs/ardour/panner_shell.cc +++ b/libs/ardour/panner_shell.cc @@ -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); |