diff options
Diffstat (limited to 'libs/ardour/audioregion.cc')
| -rw-r--r-- | libs/ardour/audioregion.cc | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/libs/ardour/audioregion.cc b/libs/ardour/audioregion.cc index a1cb58458b..992ae7fab2 100644 --- a/libs/ardour/audioregion.cc +++ b/libs/ardour/audioregion.cc @@ -356,6 +356,10 @@ AudioRegion::_read_at (const SourceList& /*srcs*/, framecnt_t limit, framecnt_t to_read; bool raw = (rops == ReadOpsNone); + if (n_channels() == 0) { + return 0; + } + if (muted() && !raw) { return 0; /* read nothing */ } @@ -407,7 +411,22 @@ AudioRegion::_read_at (const SourceList& /*srcs*/, framecnt_t limit, we don't have. */ - memset (mixdown_buffer, 0, sizeof (Sample) * cnt); + if (Config->get_replicate_missing_region_channels()) { + /* track is N-channel, this region has less channels, so use a relevant channel + */ + + uint32_t channel = n_channels() % chan_n; + boost::shared_ptr<AudioSource> src = audio_source (channel); + + if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) { + return 0; /* "read nothing" */ + } + + /* adjust read data count appropriately since this was a duplicate read */ + src->dec_read_data_count (to_read); + } else { + memset (mixdown_buffer, 0, sizeof (Sample) * cnt); + } } if (rops & ReadOpsFades) { |