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a3a30e39df
When toggling a channel-configs the following happens: 1. TrackExportChannelSelector::update_config 2. ExportProfileManager::clear_channel_configs 3. RouteExportChannel::create_from_route [...] CriticalSelectionChanged 4. ExportDialog::update_warnings_and_example_filename 5. ARDOUR::ExportProfileManager::get_warnings 6. ARDOUR::ExportProfileManager::build_filenames 7. ARDOUR::ExportFilename::set_channel_config [...] Step 3 creates a RouteExportChannel, Step 7 retains a shared-pointer to it in the config's ExportFilenamePtr. When toggling another channel: step 2 release the reference and step 3 creates a new RouteExportChannel. This new channel reuses the existing Route::_capture_processor (!). Now Step 7 releases the first RouteExportChannel in order to get_warnings for the new one. Since ExportFilenamePtr holds the the last reference, the d'tor of RouteExportChannel runs, which removes the capture-processor from the route. The newly created RouteExportChannel now has a reference to a CaptureProcessor that is not in the signal-flow. Note: the order of adding/removing RouteExportChannel matters. With a two track session: * Disable "with track/bus processing * Enable Track 1 * Enable Track 2 * Disable Track 1 * Enable Track 1 // << Track 2 becomes silent |
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