diff options
Diffstat (limited to 'libs/ardour/plugin_insert.cc')
| -rw-r--r-- | libs/ardour/plugin_insert.cc | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/libs/ardour/plugin_insert.cc b/libs/ardour/plugin_insert.cc index a03c25ee72..796ec9420c 100644 --- a/libs/ardour/plugin_insert.cc +++ b/libs/ardour/plugin_insert.cc @@ -340,9 +340,12 @@ PluginInsert::connect_and_run (BufferSet& bufs, pframes_t nframes, framecnt_t of /* copy the first stream's buffer contents to the others */ /* XXX: audio only */ - Sample const * mono = bufs.get_audio (in_map.get (DataType::AUDIO, 0, &valid)).data (offset); - for (uint32_t i = in_streams.n_audio(); i < natural_input_streams().n_audio(); ++i) { - memcpy (bufs.get_audio (in_map.get (DataType::AUDIO, i, &valid)).data (offset), mono, sizeof (Sample) * nframes); + uint32_t first_idx = in_map.get (DataType::AUDIO, 0, &valid); + if (valid) { + Sample const * mono = bufs.get_audio (first_idx).data (offset); + for (uint32_t i = in_streams.n_audio(); i < natural_input_streams().n_audio(); ++i) { + memcpy (bufs.get_audio (in_map.get (DataType::AUDIO, i, &valid)).data (offset), mono, sizeof (Sample) * nframes); + } } } |