diff options
Diffstat (limited to 'tools/bb/bb.cc')
-rw-r--r-- | tools/bb/bb.cc | 175 |
1 files changed, 46 insertions, 129 deletions
diff --git a/tools/bb/bb.cc b/tools/bb/bb.cc index 668630c0f9..644538b49c 100644 --- a/tools/bb/bb.cc +++ b/tools/bb/bb.cc @@ -11,6 +11,8 @@ #include "evoral/midi_events.h" +#include "ardour/midi_buffer.h" + #include "bb.h" #include "gui.h" @@ -18,126 +20,6 @@ using std::cerr; using std::endl; -static bool -second_simultaneous_midi_byte_is_first (uint8_t a, uint8_t b) -{ - bool b_first = false; - - /* two events at identical times. we need to determine - the order in which they should occur. - - the rule is: - - Controller messages - Program Change - Note Off - Note On - Note Pressure - Channel Pressure - Pitch Bend - */ - - if ((a) >= 0xf0 || (b) >= 0xf0 || ((a & 0xf) != (b & 0xf))) { - - /* if either message is not a channel message, or if the channels are - * different, we don't care about the type. - */ - - b_first = true; - - } else { - - switch (b & 0xf0) { - case MIDI_CMD_CONTROL: - b_first = true; - break; - - case MIDI_CMD_PGM_CHANGE: - switch (a & 0xf0) { - case MIDI_CMD_CONTROL: - break; - case MIDI_CMD_PGM_CHANGE: - case MIDI_CMD_NOTE_OFF: - case MIDI_CMD_NOTE_ON: - case MIDI_CMD_NOTE_PRESSURE: - case MIDI_CMD_CHANNEL_PRESSURE: - case MIDI_CMD_BENDER: - b_first = true; - } - break; - - case MIDI_CMD_NOTE_OFF: - switch (a & 0xf0) { - case MIDI_CMD_CONTROL: - case MIDI_CMD_PGM_CHANGE: - break; - case MIDI_CMD_NOTE_OFF: - case MIDI_CMD_NOTE_ON: - case MIDI_CMD_NOTE_PRESSURE: - case MIDI_CMD_CHANNEL_PRESSURE: - case MIDI_CMD_BENDER: - b_first = true; - } - break; - - case MIDI_CMD_NOTE_ON: - switch (a & 0xf0) { - case MIDI_CMD_CONTROL: - case MIDI_CMD_PGM_CHANGE: - case MIDI_CMD_NOTE_OFF: - break; - case MIDI_CMD_NOTE_ON: - case MIDI_CMD_NOTE_PRESSURE: - case MIDI_CMD_CHANNEL_PRESSURE: - case MIDI_CMD_BENDER: - b_first = true; - } - break; - case MIDI_CMD_NOTE_PRESSURE: - switch (a & 0xf0) { - case MIDI_CMD_CONTROL: - case MIDI_CMD_PGM_CHANGE: - case MIDI_CMD_NOTE_OFF: - case MIDI_CMD_NOTE_ON: - break; - case MIDI_CMD_NOTE_PRESSURE: - case MIDI_CMD_CHANNEL_PRESSURE: - case MIDI_CMD_BENDER: - b_first = true; - } - break; - - case MIDI_CMD_CHANNEL_PRESSURE: - switch (a & 0xf0) { - case MIDI_CMD_CONTROL: - case MIDI_CMD_PGM_CHANGE: - case MIDI_CMD_NOTE_OFF: - case MIDI_CMD_NOTE_ON: - case MIDI_CMD_NOTE_PRESSURE: - break; - case MIDI_CMD_CHANNEL_PRESSURE: - case MIDI_CMD_BENDER: - b_first = true; - } - break; - case MIDI_CMD_BENDER: - switch (a & 0xf0) { - case MIDI_CMD_CONTROL: - case MIDI_CMD_PGM_CHANGE: - case MIDI_CMD_NOTE_OFF: - case MIDI_CMD_NOTE_ON: - case MIDI_CMD_NOTE_PRESSURE: - case MIDI_CMD_CHANNEL_PRESSURE: - break; - case MIDI_CMD_BENDER: - b_first = true; - } - break; - } - } - - return b_first; -} BeatBox::BeatBox (int sr) : _start_requested (false) @@ -232,11 +114,6 @@ BeatBox::process (int nsamples) superclock_t superclocks = samples_to_superclock (nsamples, _sample_rate); - if (!_running) { - superclock_cnt += superclocks; - return 0; - } - if (_tempo_request) { double ratio = _tempo / _tempo_request; _tempo = _tempo_request; @@ -244,11 +121,20 @@ BeatBox::process (int nsamples) compute_tempo_clocks (); + /* recompute all the event times based on the ratio between the + * new and old tempo. + */ + for (Events::iterator ee = _current_events.begin(); ee != _current_events.end(); ++ee) { (*ee)->time = llrintf ((*ee)->time * ratio); } } + if (!_running) { + superclock_cnt += superclocks; + return 0; + } + superclock_t process_start = superclock_cnt - last_start; superclock_t process_end = process_start + superclocks; const superclock_t loop_length = _measures * measure_superclocks; @@ -273,7 +159,6 @@ BeatBox::process (int nsamples) void* in_buf; jack_midi_event_t in_event; jack_nframes_t event_index; - jack_nframes_t event_count; /* do this on the first pass only */ out_buf = jack_port_get_buffer (_output, nsamples); @@ -298,6 +183,7 @@ BeatBox::process (int nsamples) if (e->size && (e->time >= process_start && e->time < process_end)) { if ((buffer = jack_midi_event_reserve (out_buf, superclock_to_samples (offset + e->time - process_start, _sample_rate), e->size)) != 0) { memcpy (buffer, e->buf, e->size); + outbound_tracker.track (e->buf); } else { cerr << "Could not reserve space for output event @ " << e << " of size " << e->size << " @ " << offset + e->time - process_start << " (samples: " << superclock_to_samples (offset + e->time - process_start, _sample_rate) << ") offset is " << offset @@ -323,8 +209,37 @@ BeatBox::process (int nsamples) superclock_t quantized_time; if (_quantize_divisor != 0) { - const superclock_t time_per_beat = whole_note_superclocks / _quantize_divisor; - quantized_time = (in_loop_time / time_per_beat) * time_per_beat; + const superclock_t time_per_grid_unit = whole_note_superclocks / _quantize_divisor; + + if (in_event.buffer[0] == MIDI_CMD_NOTE_OFF) { + + /* note off is special - it must be quantized + * to at least 1 quantization "spacing" after + * the corresponding note on. + */ + + /* compute nominal time */ + + quantized_time = (in_loop_time / time_per_grid_unit) * time_per_grid_unit; + + /* look for the note on */ + + for (Events::iterator ee = _current_events.begin(); ee != _current_events.end(); ++ee) { + /* is it a note-on? same note? same channel? */ + if ((*ee)->time > quantized_time) { + cerr << "Note off seen without corresponding note on!\n"; + /* leave quantized_time alone ... should probably dump the whole event */ + break; + } + + if (((*ee)->buf[0] == MIDI_CMD_NOTE_ON) && ((*ee)->buf[1] == in_event.buffer[1]) && ((*ee)->buf[0] & 0xf) == (in_event.buffer[0] & 0xf)) { + quantized_time = (*ee)->time + time_per_grid_unit; + } + } + } else { + quantized_time = (in_loop_time / time_per_grid_unit) * time_per_grid_unit; + } + } else { quantized_time = elapsed_time; } @@ -347,6 +262,8 @@ BeatBox::process (int nsamples) e->size = in_event.size; memcpy (e->buf, in_event.buffer, in_event.size); + inbound_tracker.track (e->buf); + _current_events.insert (e); } @@ -383,7 +300,7 @@ BeatBox::EventComparator::operator() (Event const * a, Event const *b) const if (a->buf[0] == b->buf[0]) { return a < b; } - return !second_simultaneous_midi_byte_is_first (a->buf[0], b->buf[0]); + return !ARDOUR::MidiBuffer::second_simultaneous_midi_byte_is_first (a->buf[0], b->buf[0]); } return a->time < b->time; } |