/*
- 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
#include <cassert>
#include <iostream>
-#include "ardour/midi_port.h"
+#include "pbd/compose.h"
+#include "pbd/debug.h"
+
+#include "ardour/audioengine.h"
#include "ardour/data_type.h"
+#include "ardour/debug.h"
+#include "ardour/midi_buffer.h"
+#include "ardour/midi_port.h"
+#include "ardour/session.h"
-using namespace ARDOUR;
using namespace std;
+using namespace ARDOUR;
+using namespace PBD;
+
+#define port_engine AudioEngine::instance()->port_engine()
-MidiPort::MidiPort (const std::string& name, Flags flags)
- : Port (name, DataType::MIDI, flags)
- , _has_been_mixed_down (false)
+MidiPort::MidiPort (const std::string& name, PortFlags flags)
+ : Port (name, DataType::MIDI, flags)
+ , _resolve_required (false)
+ , _input_active (true)
+ , _trace_parser (0)
+ , _data_fetched_for_cycle (false)
{
- // FIXME: size kludge (see BufferSet::ensure_buffers)
- // Jack needs to tell us this
- _buffer = new MidiBuffer (1024 * 32);
+ _buffer = new MidiBuffer (AudioEngine::instance()->raw_buffer_size (DataType::MIDI));
}
MidiPort::~MidiPort()
{
+ if (_shadow_port) {
+ AudioEngine::instance()->unregister_port (_shadow_port);
+ _shadow_port.reset ();
+ }
+
delete _buffer;
}
+void
+MidiPort::parse_input (pframes_t nframes, MIDI::Parser& parser)
+{
+}
void
-MidiPort::cycle_start (nframes_t nframes, nframes_t offset)
+MidiPort::cycle_start (pframes_t nframes)
{
+ Port::cycle_start (nframes);
+
_buffer->clear ();
- assert (_buffer->size () == 0);
-
- if (sends_output ()) {
- jack_midi_clear_buffer (jack_port_get_buffer (_jack_port, nframes));
+
+ if (sends_output () && _port_handle) {
+ port_engine.midi_clear (port_engine.get_buffer (_port_handle, nframes));
+ }
+
+ if (receives_input() && _trace_parser) {
+ read_and_parse_entire_midi_buffer_with_no_speed_adjustment (nframes, *_trace_parser, AudioEngine::instance()->sample_time_at_cycle_start());
}
+
+ if (inbound_midi_filter) {
+ MidiBuffer& mb (get_midi_buffer (nframes));
+ inbound_midi_filter (mb, mb);
+ }
+
+ if (_shadow_port) {
+ MidiBuffer& mb (get_midi_buffer (nframes));
+ if (shadow_midi_filter (mb, _shadow_port->get_midi_buffer (nframes))) {
+ _shadow_port->flush_buffers (nframes);
+ }
+ }
+
}
MidiBuffer &
-MidiPort::get_midi_buffer (nframes_t nframes, nframes_t offset)
+MidiPort::get_midi_buffer (pframes_t nframes)
{
- if (_has_been_mixed_down) {
- return *_buffer;
+ if (_data_fetched_for_cycle) {
+ return *_buffer;
}
- if (receives_input ()) {
-
- void* jack_buffer = jack_port_get_buffer (_jack_port, nframes);
- const nframes_t event_count = jack_midi_get_event_count(jack_buffer);
-
- assert (event_count < _buffer->capacity());
-
- jack_midi_event_t ev;
-
- for (nframes_t i = 0; i < event_count; ++i) {
-
- jack_midi_event_get (&ev, jack_buffer, i);
-
- // i guess this should do but i leave it off to test the rest first.
- //if (ev.time > offset && ev.time < offset+nframes)
- _buffer->push_back (ev);
- }
-
- if (nframes) {
- _has_been_mixed_down = true;
+ if (receives_input () && _input_active) {
+
+ void* buffer = port_engine.get_buffer (_port_handle, nframes);
+ const pframes_t event_count = port_engine.get_midi_event_count (buffer);
+
+ /* suck all MIDI events for this cycle of nframes from
+ the MIDI port buffer into our MidiBuffer.
+ */
+
+ for (pframes_t i = 0; i < event_count; ++i) {
+
+ pframes_t timestamp;
+ size_t size;
+ uint8_t const* buf;
+
+ port_engine.midi_event_get (timestamp, size, &buf, buffer, i);
+
+ if (buf[0] == 0xfe) {
+ /* throw away active sensing */
+ continue;
+ }
+
+ timestamp = floor (timestamp * _speed_ratio);
+
+ /* check that the event is in the acceptable time range */
+ if ((timestamp < (_global_port_buffer_offset)) ||
+ (timestamp >= (_global_port_buffer_offset + nframes))) {
+ // XXX this is normal after a split cycles:
+ // The engine buffer contains the data for the complete cycle, but
+ // only the part after _global_port_buffer_offset is needed.
+#ifndef NDEBUG
+ cerr << "Dropping incoming MIDI at time " << timestamp << "; offset="
+ << _global_port_buffer_offset << " limit="
+ << (_global_port_buffer_offset + nframes)
+ << " = (" << _global_port_buffer_offset
+ << " + " << nframes
+ << ")\n";
+#endif
+ continue;
+ }
+
+ if ((buf[0] & 0xF0) == 0x90 && buf[2] == 0) {
+ /* normalize note on with velocity 0 to proper note off */
+ uint8_t ev[3];
+ ev[0] = 0x80 | (buf[0] & 0x0F); /* note off */
+ ev[1] = buf[1];
+ ev[2] = 0x40; /* default velocity */
+ _buffer->push_back (timestamp, size, ev);
+ } else {
+ _buffer->push_back (timestamp, size, buf);
+ }
}
-
+
} else {
- _buffer->silence (nframes, offset);
+ _buffer->silence (nframes);
}
-
+
if (nframes) {
- _has_been_mixed_down = true;
+ _data_fetched_for_cycle = true;
}
return *_buffer;
}
-
void
-MidiPort::cycle_end (nframes_t nframes, nframes_t offset)
+MidiPort::read_and_parse_entire_midi_buffer_with_no_speed_adjustment (pframes_t nframes, MIDI::Parser& parser, samplepos_t now)
{
-#if 0
+ void* buffer = port_engine.get_buffer (_port_handle, nframes);
+ const pframes_t event_count = port_engine.get_midi_event_count (buffer);
- if (sends_output ()) {
- /* FIXME: offset */
-
- // We're an output - copy events from source buffer to Jack buffer
-
- void* jack_buffer = jack_port_get_buffer (_jack_port, nframes);
-
- jack_midi_clear_buffer (jack_buffer);
-
- for (MidiBuffer::iterator i = _buffer->begin(); i != _buffer->end(); ++i) {
- const Evoral::Event& ev = *i;
+ for (pframes_t i = 0; i < event_count; ++i) {
- // event times should be frames, relative to cycle start
- assert(ev.time() >= 0);
- assert(ev.time() < nframes);
- jack_midi_event_write (jack_buffer, (jack_nframes_t) ev.time(), ev.buffer(), ev.size());
+ pframes_t timestamp;
+ size_t size;
+ uint8_t const* buf;
+
+ port_engine.midi_event_get (timestamp, size, &buf, buffer, i);
+
+ if (buf[0] == 0xfe) {
+ /* throw away active sensing */
+ continue;
+ }
+
+ parser.set_timestamp (now + timestamp);
+
+ /* During this parsing stage, signals will be emitted from the
+ * Parser, which will update anything connected to it.
+ *
+ * As of July 2018, this is only used by TransportMasters which
+ * read MIDI before the process() cycle really gets started.
+ */
+
+ if ((buf[0] & 0xF0) == 0x90 && buf[2] == 0) {
+ /* normalize note on with velocity 0 to proper note off */
+ parser.scanner (0x80 | (buf[0] & 0x0F)); /* note off */
+ parser.scanner (buf[1]);
+ parser.scanner (0x40); /* default (off) velocity */
+ } else {
+ for (size_t n = 0; n < size; ++n) {
+ parser.scanner (buf[n]);
+ }
}
}
-#endif
+}
+
+void
+MidiPort::cycle_end (pframes_t /*nframes*/)
+{
+ _data_fetched_for_cycle = false;
+}
+
+void
+MidiPort::cycle_split ()
+{
+ _data_fetched_for_cycle = false;
+}
+
+void
+MidiPort::resolve_notes (void* port_buffer, MidiBuffer::TimeType when)
+{
+ for (uint8_t channel = 0; channel <= 0xF; channel++) {
+
+ uint8_t ev[3] = { ((uint8_t) (MIDI_CMD_CONTROL | channel)), MIDI_CTL_SUSTAIN, 0 };
+ pframes_t tme = floor (when / _speed_ratio);
+
+ /* we need to send all notes off AND turn the
+ * sustain/damper pedal off to handle synths
+ * that prioritize sustain over AllNotesOff
+ */
+
+ if (port_engine.midi_event_put (port_buffer, tme, ev, 3) != 0) {
+ cerr << "failed to deliver sustain-zero on channel " << (int)channel << " on port " << name() << endl;
+ }
- _has_been_mixed_down = false;
+ ev[1] = MIDI_CTL_ALL_NOTES_OFF;
+
+ if (port_engine.midi_event_put (port_buffer, tme, ev, 3) != 0) {
+ cerr << "failed to deliver ALL NOTES OFF on channel " << (int)channel << " on port " << name() << endl;
+ }
+ }
}
void
-MidiPort::flush_buffers (nframes_t nframes, nframes_t offset)
+MidiPort::flush_buffers (pframes_t nframes)
{
- /* FIXME: offset */
-
if (sends_output ()) {
-
- void* jack_buffer = jack_port_get_buffer (_jack_port, nframes);
+
+ void* port_buffer = 0;
+
+ if (_resolve_required) {
+ port_buffer = port_engine.get_buffer (_port_handle, nframes);
+ /* resolve all notes at the start of the buffer */
+ resolve_notes (port_buffer, _global_port_buffer_offset);
+ _resolve_required = false;
+ }
+
+ if (_buffer->empty()) {
+ return;
+ }
+
+ if (!port_buffer) {
+ port_buffer = port_engine.get_buffer (_port_handle, nframes);
+ }
+
for (MidiBuffer::iterator i = _buffer->begin(); i != _buffer->end(); ++i) {
- const Evoral::Event<nframes_t>& ev = *i;
- // event times should be frames, relative to cycle start
- assert(ev.time() >= 0);
- assert(ev.time() < (nframes+offset));
- if (ev.time() >= offset) {
- jack_midi_event_write (jack_buffer, (jack_nframes_t) ev.time(), ev.buffer(), ev.size());
+
+ const Evoral::Event<MidiBuffer::TimeType> ev (*i, false);
+
+
+ if (sends_output() && _trace_parser) {
+ uint8_t const * const buf = ev.buffer();
+ const samplepos_t now = AudioEngine::instance()->sample_time_at_cycle_start();
+
+ _trace_parser->set_timestamp (now + ev.time());
+
+ uint32_t limit = ev.size();
+
+ for (size_t n = 0; n < limit; ++n) {
+ _trace_parser->scanner (buf[n]);
+ }
+ }
+
+
+ // event times are in samples, relative to cycle start
+
+#ifndef NDEBUG
+ if (DEBUG_ENABLED (DEBUG::MidiIO)) {
+ const Session* s = AudioEngine::instance()->session();
+ const samplepos_t now = (s ? s->transport_sample() : 0);
+ DEBUG_STR_DECL(a);
+ DEBUG_STR_APPEND(a, string_compose ("MidiPort %7 %1 pop event @ %2 (global %4, within %5 gpbo %6 sz %3 ", _buffer, ev.time(), ev.size(),
+ now + ev.time(), nframes, _global_port_buffer_offset, name()));
+ for (size_t i=0; i < ev.size(); ++i) {
+ DEBUG_STR_APPEND(a,hex);
+ DEBUG_STR_APPEND(a,"0x");
+ DEBUG_STR_APPEND(a,(int)(ev.buffer()[i]));
+ DEBUG_STR_APPEND(a,' ');
+ }
+ DEBUG_STR_APPEND(a,'\n');
+ DEBUG_TRACE (DEBUG::MidiIO, DEBUG_STR(a).str());
+ }
+#endif
+
+ assert (ev.time() < (nframes + _global_port_buffer_offset));
+
+ if (ev.time() >= _global_port_buffer_offset) {
+ pframes_t tme = floor (ev.time() / _speed_ratio);
+ if (port_engine.midi_event_put (port_buffer, tme, ev.buffer(), ev.size()) != 0) {
+ cerr << "write failed, dropped event, time "
+ << ev.time()
+ << " > " << _global_port_buffer_offset << endl;
+ }
+ } else {
+ cerr << "drop flushed event on the floor, time " << ev.time()
+ << " too early for " << _global_port_buffer_offset;
+ for (size_t xx = 0; xx < ev.size(); ++xx) {
+ cerr << ' ' << hex << (int) ev.buffer()[xx];
+ }
+ cerr << dec << endl;
}
}
+
+ /* done.. the data has moved to the port buffer, mark it so
+ */
+
+ _buffer->clear ();
}
}
+void
+MidiPort::require_resolve ()
+{
+ _resolve_required = true;
+}
+
+void
+MidiPort::transport_stopped ()
+{
+ _resolve_required = true;
+}
+
+void
+MidiPort::realtime_locate ()
+{
+ _resolve_required = true;
+}
+
+void
+MidiPort::reset ()
+{
+ Port::reset ();
+ delete _buffer;
+ cerr << name() << " new MIDI buffer of size " << AudioEngine::instance()->raw_buffer_size (DataType::MIDI) << endl;
+ _buffer = new MidiBuffer (AudioEngine::instance()->raw_buffer_size (DataType::MIDI));
+}
+
+void
+MidiPort::set_input_active (bool yn)
+{
+ _input_active = yn;
+}
+
+void
+MidiPort::set_trace (MIDI::Parser * p)
+{
+ _trace_parser = p;
+}
+
+int
+MidiPort::add_shadow_port (string const & name, MidiFilter mf)
+{
+ if (!ARDOUR::Port::receives_input()) {
+ return -1;
+ }
+
+ if (_shadow_port) {
+ return -2;
+ }
+
+ shadow_midi_filter = mf;
+
+ if (!(_shadow_port = boost::dynamic_pointer_cast<MidiPort> (AudioEngine::instance()->register_output_port (DataType::MIDI, name, false, PortFlags (Shadow|IsTerminal))))) {
+ return -3;
+ }
+
+ /* forward on our port latency to the shadow port.
+
+ XXX: need to capture latency changes and forward them too.
+ */
+
+ LatencyRange latency = private_latency_range (false);
+ _shadow_port->set_private_latency_range (latency, false);
+
+ return 0;
+}
projects / ardour.git / blobdiff