diff options
author | Robin Gareus <robin@gareus.org> | 2016-05-29 20:36:16 +0200 |
---|---|---|
committer | Robin Gareus <robin@gareus.org> | 2016-05-29 20:36:32 +0200 |
commit | 39e818a03afdf76a123bb802f020008276646708 (patch) | |
tree | 79e73fd6399cd415cc11c1540b5a53e10c864d46 /libs/ardour/luaproc.cc | |
parent | 60200bf92300388d2b0d002559a3db1b544d9705 (diff) |
prototype lua midi generators & filters and port event-rewrite
Diffstat (limited to 'libs/ardour/luaproc.cc')
-rw-r--r-- | libs/ardour/luaproc.cc | 83 |
1 files changed, 71 insertions, 12 deletions
diff --git a/libs/ardour/luaproc.cc b/libs/ardour/luaproc.cc index eb67d5c384..fc899ba4ad 100644 --- a/libs/ardour/luaproc.cc +++ b/libs/ardour/luaproc.cc @@ -212,15 +212,24 @@ LuaProc::load_script () } } - luabridge::LuaRef lua_dsp_midi_in = luabridge::getGlobal (L, "dsp_midi_input"); - if (lua_dsp_midi_in.type () == LUA_TFUNCTION) { + // query midi i/o + luabridge::LuaRef lua_dsp_has_midi_in = luabridge::getGlobal (L, "dsp_has_midi_input"); + if (lua_dsp_has_midi_in.type () == LUA_TFUNCTION) { try { - _has_midi_input = lua_dsp_midi_in (); + _has_midi_input = lua_dsp_has_midi_in (); + } catch (luabridge::LuaException const& e) { + ; + } + } + + luabridge::LuaRef lua_dsp_has_midi_out = luabridge::getGlobal (L, "dsp_has_midi_output"); + if (lua_dsp_has_midi_out.type () == LUA_TFUNCTION) { + try { + _has_midi_output = lua_dsp_has_midi_out (); } catch (luabridge::LuaException const& e) { ; } } - lpi->_is_instrument = _has_midi_input; _ctrl_params.clear (); @@ -352,10 +361,10 @@ LuaProc::can_support_io_configuration (const ChanCount& in, ChanCount& out, Chan bool found = false; bool exact_match = false; const int32_t audio_in = in.n_audio (); - int32_t midi_out = 0; // TODO handle _has_midi_output + int32_t midi_out = _has_midi_output ? 1 : 0; // preferred setting (provided by plugin_insert) - assert (out.n_audio () > 0); + assert (out.n_audio () > 0 || midi_out > 0); const int preferred_out = out.n_audio (); for (luabridge::Iterator i (iotable); !i.isNil (); ++i) { @@ -406,8 +415,17 @@ LuaProc::can_support_io_configuration (const ChanCount& in, ChanCount& out, Chan int possible_out = io["audio_out"]; if (possible_out == 0) { + if (possible_in == 0) { + if (_has_midi_output && audio_in == 0) { + // special case midi filters & generators + audio_out = 0; + found = true; + break; + } + } continue; } + if (possible_in == 0) { /* no inputs, generators & instruments */ if (possible_out == -1) { @@ -527,6 +545,15 @@ LuaProc::can_support_io_configuration (const ChanCount& in, ChanCount& out, Chan int possible_in = io["audio_in"]; int possible_out = io["audio_out"]; + if (possible_out == 0 && possible_in == 0 && _has_midi_output) { + assert (audio_in > 0); // no input is handled above + // TODO hide audio input from plugin + imprecise->set (DataType::AUDIO, 0); + audio_out = 0; + found = true; + continue; + } + assert (possible_in > 0); // all other cases will have been matched above assert (possible_out !=0 || possible_in !=0); // already handled above @@ -550,10 +577,10 @@ LuaProc::can_support_io_configuration (const ChanCount& in, ChanCount& out, Chan } if (exact_match) { - out.set (DataType::MIDI, midi_out); // currently always zero + out.set (DataType::MIDI, midi_out); out.set (DataType::AUDIO, preferred_out); } else { - out.set (DataType::MIDI, midi_out); // currently always zero + out.set (DataType::MIDI, midi_out); out.set (DataType::AUDIO, audio_out); } return true; @@ -651,7 +678,7 @@ LuaProc::connect_and_run (BufferSet& bufs, } } - luabridge::LuaRef lua_midi_tbl (luabridge::newTable (L)); + luabridge::LuaRef lua_midi_src_tbl (luabridge::newTable (L)); int e = 1; // > 1 port, we merge events (unsorted) for (uint32_t mp = 0; mp < midi_in; ++mp) { bool valid; @@ -668,20 +695,52 @@ LuaProc::connect_and_run (BufferSet& bufs, luabridge::LuaRef lua_midi_event (luabridge::newTable (L)); lua_midi_event["time"] = 1 + (*m).time(); lua_midi_event["data"] = lua_midi_data; - lua_midi_tbl[e] = lua_midi_event; + lua_midi_src_tbl[e] = lua_midi_event; } } } if (_has_midi_input) { // XXX TODO This needs a better solution than global namespace - luabridge::push (L, lua_midi_tbl); - lua_setglobal (L, "mididata"); + luabridge::push (L, lua_midi_src_tbl); + lua_setglobal (L, "midiin"); } + luabridge::LuaRef lua_midi_sink_tbl (luabridge::newTable (L)); + if (_has_midi_output) { + luabridge::push (L, lua_midi_sink_tbl); + lua_setglobal (L, "midiout"); + } // run the DSP function (*_lua_dsp)(in_map, out_map, nframes); + + // copy back midi events + if (_has_midi_output && lua_midi_sink_tbl.isTable ()) { + bool valid; + const uint32_t idx = out.get(DataType::MIDI, 0, &valid); + if (valid && bufs.count().n_midi() > idx) { + MidiBuffer& mbuf = bufs.get_midi(idx); + mbuf.silence(0, 0); + for (luabridge::Iterator i (lua_midi_sink_tbl); !i.isNil (); ++i) { + if (!i.key ().isNumber ()) { continue; } + if (!i.value ()["time"].isNumber ()) { continue; } + if (!i.value ()["data"].isTable ()) { continue; } + luabridge::LuaRef data_tbl (i.value ()["data"]); + framepos_t tme = i.value ()["time"]; + if (tme < 1 || tme > nframes) { continue; } + uint8_t data[64]; + size_t size = 0; + for (luabridge::Iterator di (data_tbl); !di.isNil () && size < sizeof(data); ++di, ++size) { + data[size] = di.value (); + } + if (size > 0 && size < 64) { + mbuf.push_back(tme - 1, size, data); + } + } + + } + } } } catch (luabridge::LuaException const& e) { PBD::error << "LuaException: " << e.what () << "\n"; |