43 lines
824 B
C++
43 lines
824 B
C++
/* $Id$ */
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#include <string.h>
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#include <jack/midiport.h>
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#include "notecache.h"
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NoteCache::NoteCache()
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{
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memset(m_notes, 0, sizeof m_notes);
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}
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NoteCache::~NoteCache()
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{
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}
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void NoteCache::Reset()
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{
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memset(m_notes, 0, sizeof m_notes);
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}
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void NoteCache::HandleEvent(jack_midi_event_t &event)
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{
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uint8_t *buffer = event.buffer;
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uint8_t cmd = buffer[0];
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/* Note on or off event */
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if ((cmd & 0xE0) == 0x80) {
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int8_t channel = cmd & 0x0F;
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for (uint i = 1; i < event.size; i += 2) {
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int8_t note = buffer[i] & 0x7F;
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int8_t velocity = buffer[i] & 0x7F;
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if ((cmd & 0xF0) == 0x80) velocity = 0;
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m_notes[channel][note] = velocity;
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}
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} else if ((cmd & 0xF0) == 0xB0 && buffer[1] == 0x7B) {
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/* All notes off */
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int8_t channel = cmd & 0x0F;
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memset(m_notes[channel], 0, sizeof m_notes[channel]);
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}
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}
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