#include <cassert>
#include <iostream>
-#include "ardour/midi_port.h"
-#include "ardour/data_type.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, PortFlags flags)
: Port (name, DataType::MIDI, flags)
- , _has_been_mixed_down (false)
, _resolve_required (false)
, _input_active (true)
- , _always_parse (false)
+ , _trace_parser (0)
+ , _data_fetched_for_cycle (false)
{
_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::cycle_start (pframes_t nframes)
+MidiPort::parse_input (pframes_t nframes, MIDI::Parser& parser)
{
- framepos_t now = AudioEngine::instance()->sample_time_at_cycle_start();
+}
+void
+MidiPort::cycle_start (pframes_t nframes)
+{
Port::cycle_start (nframes);
_buffer->clear ();
- if (sends_output ()) {
+ if (sends_output () && _port_handle) {
port_engine.midi_clear (port_engine.get_buffer (_port_handle, nframes));
}
- if (_always_parse) {
+ 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);
+ }
- /* dump incoming MIDI to parser */
-
- for (MidiBuffer::iterator b = mb.begin(); b != mb.end(); ++b) {
- uint8_t* buf = (*b).buffer();
-
- _self_parser.set_timestamp (now + (*b).time());
-
- uint32_t limit = (*b).size();
-
- for (size_t n = 0; n < limit; ++n) {
- _self_parser.scanner (buf[n]);
- }
+ 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 (pframes_t nframes)
{
- if (_has_been_mixed_down) {
+ if (_data_fetched_for_cycle) {
return *_buffer;
}
- if (receives_input ()) {
+ if (receives_input () && _input_active) {
- if (_input_active) {
+ void* buffer = port_engine.get_buffer (_port_handle, nframes);
+ const pframes_t event_count = port_engine.get_midi_event_count (buffer);
- 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.
+ */
- /* suck all relevant MIDI events from the MIDI port buffer
- into our MidiBuffer
- */
+ for (pframes_t i = 0; i < event_count; ++i) {
- for (pframes_t i = 0; i < event_count; ++i) {
-
- pframes_t timestamp;
- size_t size;
- uint8_t* buf;
-
- port_engine.midi_event_get (timestamp, size, &buf, buffer, i);
-
- if (buf[0] == 0xfe) {
- /* throw away active sensing */
- continue;
- }
-
- /* check that the event is in the acceptable time range */
-
- if ((timestamp >= (_global_port_buffer_offset + _port_buffer_offset)) &&
- (timestamp < (_global_port_buffer_offset + _port_buffer_offset + nframes))) {
- _buffer->push_back (timestamp, size, buf);
- } else {
- cerr << "Dropping incoming MIDI at time " << timestamp << "; offset="
- << _global_port_buffer_offset << " limit="
- << (_global_port_buffer_offset + _port_buffer_offset + nframes) << "\n";
- }
- }
+ pframes_t timestamp;
+ size_t size;
+ uint8_t const* buf;
- } else {
- _buffer->silence (nframes);
+ 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 {
}
if (nframes) {
- _has_been_mixed_down = true;
+ _data_fetched_for_cycle = true;
}
return *_buffer;
}
+void
+MidiPort::read_and_parse_entire_midi_buffer_with_no_speed_adjustment (pframes_t nframes, MIDI::Parser& parser, samplepos_t now)
+{
+ void* buffer = port_engine.get_buffer (_port_handle, nframes);
+ const pframes_t event_count = port_engine.get_midi_event_count (buffer);
+
+ 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;
+ }
+
+ 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]);
+ }
+ }
+ }
+}
+
void
MidiPort::cycle_end (pframes_t /*nframes*/)
{
- _has_been_mixed_down = false;
+ _data_fetched_for_cycle = false;
}
void
MidiPort::cycle_split ()
{
- _has_been_mixed_down = false;
+ _data_fetched_for_cycle = false;
}
void
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, when, ev, 3) != 0) {
+ 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;
}
ev[1] = MIDI_CTL_ALL_NOTES_OFF;
- if (port_engine.midi_event_put (port_buffer, 0, ev, 3) != 0) {
+ 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;
}
}
if (sends_output ()) {
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, 0);
+ resolve_notes (port_buffer, _global_port_buffer_offset);
_resolve_required = false;
- }
-
+ }
+
if (_buffer->empty()) {
return;
}
port_buffer = port_engine.get_buffer (_port_handle, nframes);
}
+
for (MidiBuffer::iterator i = _buffer->begin(); i != _buffer->end(); ++i) {
- const Evoral::MIDIEvent<MidiBuffer::TimeType> ev (*i, false);
+ 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 frames, relative to cycle start
+ // 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 + _port_buffer_offset));
+ assert (ev.time() < (nframes + _global_port_buffer_offset));
- if (ev.time() >= _global_port_buffer_offset + _port_buffer_offset) {
- if (port_engine.midi_event_put (port_buffer, (pframes_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;
+ 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
- << " + " << _port_buffer_offset << endl;
+ << " 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
+ /* done.. the data has moved to the port buffer, mark it so
*/
_buffer->clear ();
}
void
-MidiPort::set_always_parse (bool yn)
+MidiPort::set_trace (MIDI::Parser * p)
{
- _always_parse = yn;
+ _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