use ForGroup to flag and detect route-group based control changes

[ardour.git] / libs / ardour / export_channel.cc

diff --git a/libs/ardour/export_channel.cc b/libs/ardour/export_channel.cc
index fc71d8536f049cfe413642bb1efd8b9d4b810506..2ccaf1ae33cd3f208c83f3e2c74c2c8f0a3b19cf 100644 (file)
--- a/libs/ardour/export_channel.cc
+++ b/libs/ardour/export_channel.cc
@@ -113,7 +113,7 @@ PortExportChannel::set_state (XMLNode * node, Session & session)
        }
 }
 
-RegionExportChannelFactory::RegionExportChannelFactory (Session * session, AudioRegion const & region, AudioTrack & track, Type type) 
+RegionExportChannelFactory::RegionExportChannelFactory (Session * session, AudioRegion const & region, AudioTrack & track, Type type)
        : region (region)
        , track (track)
        , type (type)
@@ -187,11 +187,12 @@ RegionExportChannelFactory::update_buffers (framecnt_t frames)
                assert (mixdown_buffer && gain_buffer);
                for (size_t channel = 0; channel < n_channels; ++channel) {
                        memset (mixdown_buffer.get(), 0, sizeof (Sample) * frames);
+                       buffers.get_audio (channel).silence(frames);
                        region.read_at (buffers.get_audio (channel).data(), mixdown_buffer.get(), gain_buffer.get(), position, frames, channel);
                }
                break;
        case Processed:
-               track.export_stuff (buffers, position, frames, track.main_outs(), true, true);
+               track.export_stuff (buffers, position, frames, track.main_outs(), true, true, false);
                break;
        default:
                throw ExportFailed ("Unhandled type in ExportChannelFactory::update_buffers");