handle sidechain input changes

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

diff --git a/libs/ardour/export_graph_builder.cc b/libs/ardour/export_graph_builder.cc
index 685db817d495673c1789aa749cf055bd0927c531..d23763a5677fc728b8d31a3b413aad53c71b6b9a 100644 (file)
--- a/libs/ardour/export_graph_builder.cc
+++ b/libs/ardour/export_graph_builder.cc
@@ -305,33 +305,60 @@ ExportGraphBuilder::SFC::SFC (ExportGraphBuilder &parent, FileSpec const & new_c
        config = new_config;
        data_width = sndfile_data_width (Encoder::get_real_format (config));
        unsigned channels = new_config.channel_config->get_n_chans();
-       analyser.reset (new Analyser (config.format->sample_rate(), channels, max_frames,
-                               (framecnt_t) ceil (parent.timespan->get_length () * config.format->sample_rate () / (double) parent.session.nominal_frame_rate ())));
-       parent.add_analyser (config.filename->get_path (config.format), analyser);
+       _analyse = config.format->analyse();
+       if (_analyse) {
+               framecnt_t sample_rate = parent.session.nominal_frame_rate();
+               framecnt_t sb = config.format->silence_beginning_at (parent.timespan->get_start(), sample_rate);
+               framecnt_t se = config.format->silence_end_at (parent.timespan->get_end(), sample_rate);
+               framecnt_t duration = parent.timespan->get_length () + sb + se;
+               max_frames = min ((framecnt_t) 8192 * channels, max ((framecnt_t) 4096 * channels, max_frames));
+               chunker.reset (new Chunker<Sample> (max_frames));
+               analyser.reset (new Analyser (config.format->sample_rate(), channels, max_frames,
+                                       (framecnt_t) ceil (duration * config.format->sample_rate () / (double) sample_rate)));
+               chunker->add_output (analyser);
+               parent.add_analyser (config.filename->get_path (config.format), analyser);
+       }
 
        if (data_width == 8 || data_width == 16) {
                short_converter = ShortConverterPtr (new SampleFormatConverter<short> (channels));
                short_converter->init (max_frames, config.format->dither_type(), data_width);
                add_child (config);
-               analyser->add_output (short_converter);
+               if (_analyse) { analyser->add_output (short_converter); }
+
        } else if (data_width == 24 || data_width == 32) {
                int_converter = IntConverterPtr (new SampleFormatConverter<int> (channels));
                int_converter->init (max_frames, config.format->dither_type(), data_width);
                add_child (config);
-               analyser->add_output (int_converter);
+               if (_analyse) { analyser->add_output (int_converter); }
        } else {
                int actual_data_width = 8 * sizeof(Sample);
                float_converter = FloatConverterPtr (new SampleFormatConverter<Sample> (channels));
                float_converter->init (max_frames, config.format->dither_type(), actual_data_width);
                add_child (config);
-               analyser->add_output (float_converter);
+               if (_analyse) { analyser->add_output (float_converter); }
+       }
+}
+
+void
+ExportGraphBuilder::SFC::set_peak (float gain)
+{
+       if (_analyse) {
+               analyser->set_normalization_gain (gain);
        }
 }
 
 ExportGraphBuilder::FloatSinkPtr
 ExportGraphBuilder::SFC::sink ()
 {
-       return analyser;
+       if (_analyse) {
+               return chunker;
+       } else if (data_width == 8 || data_width == 16) {
+               return short_converter;
+       } else if (data_width == 24 || data_width == 32) {
+               return int_converter;
+       } else {
+               return float_converter;
+       }
 }
 
 void
@@ -464,7 +491,10 @@ ExportGraphBuilder::Normalizer::process()
 void
 ExportGraphBuilder::Normalizer::start_post_processing()
 {
-       normalizer->set_peak (peak_reader->get_peak());
+       const float gain = normalizer->set_peak (peak_reader->get_peak());
+       for (boost::ptr_list<SFC>::iterator i = children.begin(); i != children.end(); ++i) {
+               (*i).set_peak (gain);
+       }
        tmp_file->seek (0, SEEK_SET);
        tmp_file->add_output (normalizer);
        parent.normalizers.push_back (this);
@@ -550,7 +580,8 @@ ExportGraphBuilder::SilenceHandler::SilenceHandler (ExportGraphBuilder & parent,
        max_frames_in = max_frames;
        framecnt_t sample_rate = parent.session.nominal_frame_rate();
 
-       silence_trimmer.reset (new SilenceTrimmer<Sample>(max_frames_in));
+       // TODO silence-threshold should be per export-preset, with Config->get_silence_threshold being the default
+       silence_trimmer.reset (new SilenceTrimmer<Sample>(max_frames_in, Config->get_export_silence_threshold ()));
        silence_trimmer->set_trim_beginning (config.format->trim_beginning());
        silence_trimmer->set_trim_end (config.format->trim_end());