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_on (false)
+ , _trace_parser (0)
+ , _data_fetched_for_cycle (false)
{
_buffer = new MidiBuffer (AudioEngine::instance()->raw_buffer_size (DataType::MIDI));
}
}
void
-MidiPort::cycle_start (pframes_t nframes)
+MidiPort::parse_input (pframes_t nframes, MIDI::Parser& parser)
{
- samplepos_t now = AudioEngine::instance()->sample_time_at_cycle_start();
+}
+void
+MidiPort::cycle_start (pframes_t nframes)
+{
Port::cycle_start (nframes);
_buffer->clear ();
port_engine.midi_clear (port_engine.get_buffer (_port_handle, nframes));
}
- if (_always_parse || (receives_input() && _trace_on)) {
- MidiBuffer& mb (get_midi_buffer (nframes));
-
- /* 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 (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) {
}
-Buffer&
-MidiPort::get_buffer (pframes_t nframes)
-{
- return get_midi_buffer (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 (_input_active) {
+ 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);
+ void* buffer = port_engine.get_buffer (_port_handle, nframes);
+ const pframes_t event_count = port_engine.get_midi_event_count (buffer);
- /* suck all relevant MIDI events from the MIDI port buffer
- into our MidiBuffer
- */
+ /* 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) {
+ for (pframes_t i = 0; i < event_count; ++i) {
- pframes_t timestamp;
- size_t size;
- uint8_t const* buf;
+ pframes_t timestamp;
+ size_t size;
+ uint8_t const* buf;
- port_engine.midi_event_get (timestamp, size, &buf, buffer, i);
+ port_engine.midi_event_get (timestamp, size, &buf, buffer, i);
- if (buf[0] == 0xfe) {
- /* throw away active sensing */
- continue;
- }
+ if (buf[0] == 0xfe) {
+ /* throw away active sensing */
+ continue;
+ }
- timestamp = floor (timestamp * _speed_ratio);
+ 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.
+ /* 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";
+ 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;
- }
-
- /* adjust timestamp to match current cycle */
- timestamp -= _global_port_buffer_offset;
- assert (timestamp < nframes);
-
- 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);
- }
+ continue;
}
- } else {
- _buffer->silence (nframes);
+ 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
const Evoral::Event<MidiBuffer::TimeType> ev (*i, false);
- if (sends_output() && _trace_on) {
+ if (sends_output() && _trace_parser) {
uint8_t const * const buf = ev.buffer();
const samplepos_t now = AudioEngine::instance()->sample_time_at_cycle_start();
- _self_parser.set_timestamp (now + ev.time());
+ _trace_parser->set_timestamp (now + ev.time());
uint32_t limit = ev.size();
for (size_t n = 0; n < limit; ++n) {
- _self_parser.scanner (buf[n]);
+ _trace_parser->scanner (buf[n]);
}
}
}
void
-MidiPort::set_always_parse (bool yn)
-{
- _always_parse = yn;
-}
-
-void
-MidiPort::set_trace_on (bool yn)
+MidiPort::set_trace (MIDI::Parser * p)
{
- _trace_on = yn;
+ _trace_parser = p;
}
int
projects / ardour.git / blobdiff