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131 lines
3.2 KiB
131 lines
3.2 KiB
#include <jack/jack.h>
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#include <jack/midiport.h>
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#include "cvin.h"
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void CVIn::shutdown()
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{
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}
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int CVIn::process(jack_nframes_t nframes)
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{
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if (!m_ready) return 0;
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void *midi_out = jack_port_get_buffer(m_midi_out, nframes);
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jack_midi_clear_buffer(midi_out);
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for (unsigned i = 0; i < m_mapping_list.size(); i++) {
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m_buffers[i] = static_cast<sample_t *>(jack_port_get_buffer(m_ports[i], nframes));
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}
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for (jack_nframes_t f = 0; f < nframes; f++) {
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int port = 0;
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MappingList::iterator it;
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for (it = m_it_begin; it != m_it_end; ++it, port++) {
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Mapping *m = &(*it);
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jack_midi_data_t buf[3];
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m->cur_mv = m->to_mv(*m_buffers[port]++);
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if (m->tick_cvin()) {
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switch (m->type) {
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case TYPE_PB:
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buf[0] = 0xE0 | m->channel;
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buf[1] = m->last_mv >> 7;
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buf[2] = m->last_mv & 0x7F;
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jack_midi_event_write(midi_out, f, buf, sizeof buf);
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break;
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case TYPE_CC:
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buf[0] = 0xB0 | m->channel;
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buf[1] = m->ccmsb;
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if (m->has_lsb) {
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buf[2] = m->last_mv >> 7;
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jack_midi_event_write(midi_out, f, buf, sizeof buf);
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buf[1] = m->cclsb;
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}
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buf[2] = m->last_mv & 0x7F;
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jack_midi_event_write(midi_out, f, buf, sizeof buf);
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break;
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case TYPE_NRPN:
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buf[0] = 0xB0 | m->channel;
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buf[1] = 99;
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buf[2] = m->ccmsb;
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jack_midi_event_write(midi_out, f, buf, sizeof buf);
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buf[1] = 98;
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buf[2] = m->cclsb;
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jack_midi_event_write(midi_out, f, buf, sizeof buf);
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buf[1] = 6;
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if (m->has_lsb) {
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buf[2] = m->last_mv >> 7;
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jack_midi_event_write(midi_out, f, buf, sizeof buf);
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buf[1] = 38;
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}
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buf[2] = m->last_mv & 0x7F;
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jack_midi_event_write(midi_out, f, buf, sizeof buf);
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break;
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case TYPE_RPN:
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buf[0] = 0xB0 | m->channel;
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buf[1] = 101;
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buf[2] = m->ccmsb;
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jack_midi_event_write(midi_out, f, buf, sizeof buf);
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buf[1] = 100;
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buf[2] = m->cclsb;
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jack_midi_event_write(midi_out, f, buf, sizeof buf);
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buf[1] = 6;
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if (m->has_lsb) {
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buf[2] = m->last_mv >> 7;
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jack_midi_event_write(midi_out, f, buf, sizeof buf);
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buf[1] = 38;
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}
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buf[2] = m->last_mv & 0x7F;
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jack_midi_event_write(midi_out, f, buf, sizeof buf);
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break;
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}
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}
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}
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}
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return 0;
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}
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void CVIn::start()
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{
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m_ready = false;
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m_tick = 0;
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if (m_mapping_list.size() == 0) return;
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m_ports = new jack_port_t *[m_mapping_list.size()];
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m_buffers = new sample_t *[m_mapping_list.size()];
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if (!open(m_config_name.empty() ? "m2cv_in" : m_config_name.c_str())) exit(EXIT_FAILURE);
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m_midi_out = port_register("midi_out", JACK_DEFAULT_MIDI_TYPE, JackPortIsOutput, 0);
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MappingList::iterator it_begin = m_mapping_list.begin();
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MappingList::iterator it_end = m_mapping_list.end();
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int port = 0;
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MappingList::iterator it;
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for (it = it_begin; it != it_end; ++it, port++) {
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Mapping *m = &(*it);
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m_ports[port] = port_register(m->name.c_str(), JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0);
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m->latency_ticks = m_sample_rate * m->latency / 1000.0f;
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}
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m_it_end = it_end;
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m_it_begin = it_begin;
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m_ready = true;
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}
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void CVIn::stop()
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{
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if (m_mapping_list.size() == 0) return;
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close();
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delete [] m_ports;
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delete [] m_buffers;
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}
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