X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fmidi_port.cc;h=50d4ce64e83f784675136e42db080bd143c018af;hb=6de0f8a8a8348b502344bbd3a50b8c54f4d7afaf;hp=6b097930f1cb89ecc515590baca8c3a7e54e3271;hpb=f360ef94da46a560d667a51988ba66730696e812;p=ardour.git diff --git a/libs/ardour/midi_port.cc b/libs/ardour/midi_port.cc index 6b097930f1..50d4ce64e8 100644 --- a/libs/ardour/midi_port.cc +++ b/libs/ardour/midi_port.cc @@ -1,5 +1,5 @@ /* - Copyright (C) 2006 Paul Davis + Copyright (C) 2006 Paul Davis This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -19,94 +19,202 @@ #include #include -#include -#include -#include +#include "ardour/midi_port.h" +#include "ardour/data_type.h" +#include "ardour/audioengine.h" using namespace ARDOUR; using namespace std; -MidiPort::MidiPort (const std::string& name, Flags flags, bool external, nframes_t capacity) - : Port (name, flags) - , BaseMidiPort (name, flags) - , PortFacade (name, flags) +MidiPort::MidiPort (const std::string& name, Flags flags) + : Port (name, DataType::MIDI, flags) + , _has_been_mixed_down (false) + , _resolve_required (false) + , _input_active (true) { - // FIXME: size kludge (see BufferSet::ensure_buffers) - // Jack needs to tell us this - _buffer = new MidiBuffer (capacity * 4); - - if (external) { - /* external ports use the same buffer for the jack port (_ext_port) - * and internal ports (this) */ - _ext_port = new JackMidiPort (name, flags, _buffer); - Port::set_name (_ext_port->name()); - } else { - /* internal ports just have a single buffer, no jack port */ - _ext_port = 0; - set_name (name); - } - - reset (); + _buffer = new MidiBuffer (AudioEngine::instance()->raw_buffer_size (DataType::MIDI)); } MidiPort::~MidiPort() { - if (_ext_port) { - delete _ext_port; - _ext_port = 0; - } + delete _buffer; } void -MidiPort::reset() +MidiPort::cycle_start (pframes_t nframes) { - BaseMidiPort::reset(); + Port::cycle_start (nframes); + + _buffer->clear (); - if (_ext_port) { - _ext_port->reset (); + assert (_buffer->size () == 0); + + if (sends_output ()) { + jack_midi_clear_buffer (jack_port_get_buffer (_jack_port, nframes)); } } -void -MidiPort::cycle_start (nframes_t nframes, nframes_t offset) +MidiBuffer & +MidiPort::get_midi_buffer (pframes_t nframes) { - if (_ext_port) { - _ext_port->cycle_start (nframes, offset); + if (_has_been_mixed_down) { + return *_buffer; } - - if (_flags & IsInput) { + + if (receives_input ()) { + + if (_input_active) { + + void* jack_buffer = jack_port_get_buffer (_jack_port, nframes); + const pframes_t event_count = jack_midi_get_event_count (jack_buffer); - if (_ext_port) { - - BaseMidiPort* mprt = dynamic_cast(_ext_port); - assert(mprt); - assert(&mprt->get_midi_buffer() == _buffer); - - if (!_connections.empty()) { - (*_mixdown) (_connections, _buffer, nframes, offset, false); - } + assert (event_count < _buffer->capacity()); + + /* suck all relevant MIDI events from the JACK MIDI port buffer + into our MidiBuffer + */ + + for (pframes_t i = 0; i < event_count; ++i) { + + jack_midi_event_t ev; + + jack_midi_event_get (&ev, jack_buffer, i); + + if (ev.buffer[0] == 0xfe) { + /* throw away active sensing */ + continue; + } + + /* check that the event is in the acceptable time range */ + + if ((ev.time >= (_global_port_buffer_offset + _port_buffer_offset)) && + (ev.time < (_global_port_buffer_offset + _port_buffer_offset + nframes))) { + _buffer->push_back (ev); + } else { + cerr << "Dropping incoming MIDI at time " << ev.time << "; offset=" + << _global_port_buffer_offset << " limit=" + << (_global_port_buffer_offset + _port_buffer_offset + nframes) << "\n"; + } + } } else { - - if (_connections.empty()) { - _buffer->silence (nframes, offset); - } else { - (*_mixdown) (_connections, _buffer, nframes, offset, true); - } + _buffer->silence (nframes); } } else { - - _buffer->silence (nframes, offset); + _buffer->silence (nframes); + } + + if (nframes) { + _has_been_mixed_down = true; + } + + return *_buffer; +} + + +void +MidiPort::cycle_end (pframes_t /*nframes*/) +{ + _has_been_mixed_down = false; +} + +void +MidiPort::cycle_split () +{ + _has_been_mixed_down = false; +} + +void +MidiPort::resolve_notes (void* jack_buffer, MidiBuffer::TimeType when) +{ + uint8_t ev[3]; + + ev[2] = 0; + + for (uint8_t channel = 0; channel <= 0xF; channel++) { + ev[0] = (MIDI_CMD_CONTROL | channel); + + /* we need to send all notes off AND turn the + * sustain/damper pedal off to handle synths + * that prioritize sustain over AllNotesOff + */ + + ev[1] = MIDI_CTL_SUSTAIN; + + if (jack_midi_event_write (jack_buffer, when, ev, 3) != 0) { + cerr << "failed to deliver sustain-zero on channel " << channel << " on port " << name() << endl; + } + + ev[1] = MIDI_CTL_ALL_NOTES_OFF; + + if (jack_midi_event_write (jack_buffer, 0, ev, 3) != 0) { + cerr << "failed to deliver ALL NOTES OFF on channel " << channel << " on port " << name() << endl; + } } } - void -MidiPort::cycle_end (nframes_t nframes, nframes_t offset) +MidiPort::flush_buffers (pframes_t nframes, framepos_t /*time*/) { - if (_ext_port) { - _ext_port->cycle_end (nframes, offset); + if (sends_output ()) { + + void* jack_buffer = jack_port_get_buffer (_jack_port, nframes); + + if (_resolve_required) { + /* resolve all notes at the start of the buffer */ + resolve_notes (jack_buffer, 0); + _resolve_required= false; + } + + for (MidiBuffer::iterator i = _buffer->begin(); i != _buffer->end(); ++i) { + + const Evoral::MIDIEvent ev (*i, false); + + // event times are in frames, relative to cycle start + + assert (ev.time() < (nframes + _global_port_buffer_offset + _port_buffer_offset)); + + if (ev.event_type() == LoopEventType) { + resolve_notes (jack_buffer, ev.time()); + continue; + } + + if (ev.time() >= _global_port_buffer_offset + _port_buffer_offset) { + if (jack_midi_event_write (jack_buffer, (jack_nframes_t) ev.time(), ev.buffer(), ev.size()) != 0) { + cerr << "write failed, drop flushed note off on the floor, time " + << ev.time() << " > " << _global_port_buffer_offset + _port_buffer_offset << endl; + } + } else { + cerr << "drop flushed event on the floor, time " << ev.time() + << " < " << _global_port_buffer_offset + _port_buffer_offset << endl; + } + } } } +void +MidiPort::transport_stopped () +{ + _resolve_required = true; +} + +void +MidiPort::realtime_locate () +{ + _resolve_required = true; +} + +void +MidiPort::reset () +{ + Port::reset (); + delete _buffer; + _buffer = new MidiBuffer (AudioEngine::instance()->raw_buffer_size (DataType::MIDI)); +} + +void +MidiPort::set_input_active (bool yn) +{ + _input_active = yn; +}