prepare strict-i/o configuration.

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

diff --git a/libs/ardour/plugin_insert.cc b/libs/ardour/plugin_insert.cc
index 19571c6b5faff5d53b8352547def2b52dd013491..ac3ef46155f16565b4f2306b0dbef422c6a002c3 100644 (file)
--- a/libs/ardour/plugin_insert.cc
+++ b/libs/ardour/plugin_insert.cc
@@ -68,6 +68,8 @@ PluginInsert::PluginInsert (Session& s, boost::shared_ptr<Plugin> plug)
        : Processor (s, (plug ? plug->name() : string ("toBeRenamed")))
        , _signal_analysis_collected_nframes(0)
        , _signal_analysis_collect_nframes_max(0)
+       , _strict_io (false)
+       , _strict_io_configured (false)
 {
        /* the first is the master */
 
@@ -138,7 +140,10 @@ PluginInsert::output_streams() const
 
        PluginInfoPtr info = _plugins.front()->get_info();
 
-       if (info->reconfigurable_io()) {
+       if (_strict_io_configured) {
+               return _configured_in; // XXX, check initial configuration
+       }
+       else if (info->reconfigurable_io()) {
                ChanCount out = _plugins.front()->output_streams ();
                // DEBUG_TRACE (DEBUG::Processors, string_compose ("Plugin insert, reconfigur(able) output streams = %1\n", out));
                return out;
@@ -807,6 +812,7 @@ PluginInsert::can_support_io_configuration (const ChanCount& in, ChanCount& out)
 PluginInsert::Match
 PluginInsert::private_can_support_io_configuration (ChanCount const & inx, ChanCount& out)
 {
+       _strict_io_configured = false;
        if (_plugins.empty()) {
                return Match();
        }
@@ -822,6 +828,11 @@ PluginInsert::private_can_support_io_configuration (ChanCount const & inx, ChanC
                        return Match (Impossible, 0);
                }
 
+               if (_strict_io && in.n_audio() < out.n_audio()) {
+                       DEBUG_TRACE (DEBUG::Processors, string_compose ("hiding output ports of reconfigurable %1\n", name()));
+                       out.set (DataType::AUDIO, in.get (DataType::AUDIO));
+               }
+
                return Match (Delegate, 1);
        }
 
@@ -852,7 +863,7 @@ PluginInsert::private_can_support_io_configuration (ChanCount const & inx, ChanC
        }
 
        /* Plugin inputs match requested inputs exactly */
-       if (inputs == in) {
+       if (inputs == in  && (!_strict_io || outputs.n_audio() == inputs.n_audio())) {
                out = outputs + midi_bypass;
                return Match (ExactMatch, 1);
        }
@@ -907,7 +918,7 @@ PluginInsert::private_can_support_io_configuration (ChanCount const & inx, ChanC
           plugin inputs?  Let me count the ways ...
        */
 
-       bool can_split = true;
+       bool can_split = !_strict_io;
        for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
 
                bool const can_split_type = (in.get (*t) == 1 && inputs.get (*t) > 1);
@@ -943,7 +954,12 @@ PluginInsert::private_can_support_io_configuration (ChanCount const & inx, ChanC
        }
 
        if (could_hide && !cannot_hide) {
-               out = outputs + midi_bypass;
+               if (_strict_io && inputs.get (DataType::AUDIO) == outputs.get (DataType::AUDIO)) {
+                       _strict_io_configured = true;
+                       outputs = inputs;
+               } else {
+                       out = outputs + midi_bypass;
+               }
                return Match (Hide, 1, hide_channels);
        }