ash
458cb5060f
- Add CMakeLists.txt for project and all components - Add idf_component.yml with TinyUSB dependency - Create switch_stub.cpp implementation - Fix app_task.h to match .cpp implementation (2-param signature) - Fix led_stub.h/cpp class naming (DefaultLedStub) - Fix midi_transport.cpp TinyUSB API usage (tud_midi_*) - Move main.cpp to main/ directory - Add sdkconfig.defaults for ESP32-S3
128 lines
3.8 KiB
C++
128 lines
3.8 KiB
C++
// components/midi/midi_transport.cpp
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#include "midi/midi_transport.h"
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#include "esp_log.h"
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#include "tusb.h"
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static const char* TAG = "midi_transport";
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UsbMidiTransport::UsbMidiTransport() : event_queue(nullptr), initialized(false) {
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}
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UsbMidiTransport::~UsbMidiTransport() {
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if (event_queue != NULL) {
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vQueueDelete(event_queue);
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}
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}
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bool UsbMidiTransport::begin() {
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// Create event queue
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event_queue = xQueueCreate(32, sizeof(MidiEvent));
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if (event_queue == NULL) {
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ESP_LOGE(TAG, "Failed to create event queue");
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return false;
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}
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// Initialize TinyUSB
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tusb_init();
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initialized = true;
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ESP_LOGI(TAG, "USB MIDI transport initialized");
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return true;
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}
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void UsbMidiTransport::task() {
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if (!initialized) return;
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// TinyUSB device task handling
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tuh_task();
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// Check for MIDI data on the USB host interface
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uint8_t cable_num;
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uint8_t midi_packet[4];
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while (tud_midi_available()) {
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if (tud_midi_packet_read(midi_packet)) {
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MidiEvent event;
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parse_midi_packet(midi_packet, 4, event);
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log_incoming("USB", event);
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if (xQueueSend(event_queue, &event, 0) != pdPASS) {
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ESP_LOGW(TAG, "Failed to queue MIDI event (queue full)");
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}
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}
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}
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}
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void UsbMidiTransport::log_incoming(const char* source, const MidiEvent& event) {
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const char* type_str;
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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 = "PITCH_BEND"; break;
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default: type_str = "UNKNOWN"; break;
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}
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ESP_LOGI(TAG, "MIDI IN: %s Ch:%d %s:%d:%d",
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source, event.channel, type_str, event.data1, event.data2);
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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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// USB MIDI packet format: [cable_num | CIN], [status], [data1], [data2]
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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; // Convert to 1-16 range
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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: // Note Off
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event.type = MidiEvent::NOTE_OFF;
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break;
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case 0x9: // Note On
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event.type = MidiEvent::NOTE_ON;
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if (event.data2 == 0) {
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event.type = MidiEvent::NOTE_OFF;
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}
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break;
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case 0xB: // Control Change
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event.type = MidiEvent::CONTROL_CHANGE;
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break;
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case 0xC: // Program Change
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event.type = MidiEvent::PROGRAM_CHANGE;
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break;
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case 0xE: // Pitch Bend
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event.type = MidiEvent::PITCH_BEND;
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break;
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default:
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// Try to infer from status byte
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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 = MidiEvent::NOTE_ON; 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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void usb_midi_task(void* pvParameters) {
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UsbMidiTransport* transport = static_cast<UsbMidiTransport*>(pvParameters);
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ESP_LOGI(TAG, "USB MIDI task started");
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while (true) {
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transport->task();
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vTaskDelay(pdMS_TO_TICKS(1));
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}
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}
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