121 lines
3.9 KiB
C++
121 lines
3.9 KiB
C++
#include "midi_transport.h"
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#include <Arduino.h>
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#include "USB.h"
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#include "USBMIDI.h"
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static USBMIDI usb_midi;
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UsbMidiTransport::UsbMidiTransport() : initialized(false) {
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}
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UsbMidiTransport::~UsbMidiTransport() {
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}
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bool UsbMidiTransport::begin() {
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Serial.println("[MIDI] Setting up USB MIDI device...");
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if (!usb_midi.begin()) {
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Serial.println("[MIDI] ERROR: USB MIDI init failed");
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return false;
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}
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USB.begin();
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initialized = true;
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Serial.println("[MIDI] USB MIDI ready - enumerating...");
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return true;
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}
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void UsbMidiTransport::update() {
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if (!initialized) return;
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static uint32_t last_status = 0;
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uint32_t now = millis();
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if (now - last_status > 5000) {
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last_status = now;
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Serial.printf("[MIDI] USB ready: %s\n", USB.ready() ? "YES" : "NO");
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}
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while (usb_midi.available()) {
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uint8_t packet[4];
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if (usb_midi.readPacket(packet)) {
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MidiEvent event;
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parse_midi_packet(packet, 4, event);
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const char* type_str = "UNK";
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switch (event.type) {
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case MidiEvent::NOTE_ON: type_str = "NOTE_ON"; break;
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case MidiEvent::NOTE_OFF: type_str = "NOTE_OFF"; break;
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case MidiEvent::CONTROL_CHANGE: type_str = "CC"; break;
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case MidiEvent::PROGRAM_CHANGE: type_str = "PC"; break;
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case MidiEvent::PITCH_BEND: type_str = "PB"; break;
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default: break;
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}
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Serial.printf("[MIDI IN] Ch:%d %s:%d:%d\n", event.channel, type_str, event.data1, event.data2);
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if (receive_callback) {
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receive_callback(event);
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}
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}
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}
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}
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void UsbMidiTransport::on_midi_receive(std::function<void(const MidiEvent&)> callback) {
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receive_callback = callback;
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}
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void UsbMidiTransport::send_note_on(uint8_t channel, uint8_t note, uint8_t velocity) {
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if (!initialized) return;
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usb_midi.noteOn(note, velocity, channel);
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Serial.printf("[MIDI OUT] Ch:%d NOTE_ON:%d:%d\n", channel, note, velocity);
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}
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void UsbMidiTransport::send_note_off(uint8_t channel, uint8_t note, uint8_t velocity) {
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if (!initialized) return;
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usb_midi.noteOff(note, velocity, channel);
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Serial.printf("[MIDI OUT] Ch:%d NOTE_OFF:%d:%d\n", channel, note, velocity);
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}
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void UsbMidiTransport::send_cc(uint8_t channel, uint8_t cc, uint8_t value) {
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if (!initialized) return;
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usb_midi.controlChange(cc, value, channel);
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Serial.printf("[MIDI OUT] Ch:%d CC:%d:%d\n", channel, cc, value);
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}
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bool UsbMidiTransport::is_connected() {
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return initialized && USB.ready();
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}
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void UsbMidiTransport::parse_midi_packet(const uint8_t* buffer, uint32_t size, MidiEvent& event) {
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if (size < 4) return;
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uint8_t cin = buffer[0] & 0x0F;
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uint8_t status = buffer[1];
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uint8_t type = status & 0xF0;
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uint8_t channel = (status & 0x0F) + 1;
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event.channel = channel;
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event.data1 = buffer[2];
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event.data2 = buffer[3];
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switch (cin) {
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case 0x8: event.type = MidiEvent::NOTE_OFF; break;
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case 0x9:
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event.type = (event.data2 > 0) ? MidiEvent::NOTE_ON : MidiEvent::NOTE_OFF;
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break;
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case 0xB: event.type = MidiEvent::CONTROL_CHANGE; break;
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case 0xC: event.type = MidiEvent::PROGRAM_CHANGE; break;
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case 0xE: event.type = MidiEvent::PITCH_BEND; break;
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default:
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switch (type) {
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case 0x80: event.type = MidiEvent::NOTE_OFF; break;
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case 0x90: event.type = (event.data2 > 0) ? MidiEvent::NOTE_ON : MidiEvent::NOTE_OFF; break;
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case 0xB0: event.type = MidiEvent::CONTROL_CHANGE; break;
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case 0xC0: event.type = MidiEvent::PROGRAM_CHANGE; break;
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case 0xE0: event.type = MidiEvent::PITCH_BEND; break;
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default: event.type = MidiEvent::NOTE_ON; break;
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}
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break;
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}
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}
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