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- #include <keyboard.hpp>
- #include <midi.hpp>
- #include <window.hpp>
- #include <map>
-
-
- namespace rack {
- namespace keyboard {
-
-
- struct Driver;
-
-
- static const int DRIVER = -11;
- static Driver* driver = NULL;
-
- enum {
- CMD_OCTAVE_DOWN = -1,
- CMD_OCTAVE_UP = -2,
- };
-
- static const int deviceCount = 2;
-
- static const std::vector<std::map<int, int>> deviceKeyNote = {
- {
- {GLFW_KEY_GRAVE_ACCENT, CMD_OCTAVE_DOWN},
- {GLFW_KEY_1, CMD_OCTAVE_UP},
-
- {GLFW_KEY_Z, 0},
- {GLFW_KEY_S, 1},
- {GLFW_KEY_X, 2},
- {GLFW_KEY_D, 3},
- {GLFW_KEY_C, 4},
- {GLFW_KEY_V, 5},
- {GLFW_KEY_G, 6},
- {GLFW_KEY_B, 7},
- {GLFW_KEY_H, 8},
- {GLFW_KEY_N, 9},
- {GLFW_KEY_J, 10},
- {GLFW_KEY_M, 11},
- {GLFW_KEY_COMMA, 12},
- {GLFW_KEY_L, 13},
- {GLFW_KEY_PERIOD, 14},
- {GLFW_KEY_SEMICOLON, 15},
- {GLFW_KEY_SLASH, 16},
-
- {GLFW_KEY_Q, 12},
- {GLFW_KEY_2, 13},
- {GLFW_KEY_W, 14},
- {GLFW_KEY_3, 15},
- {GLFW_KEY_E, 16},
- {GLFW_KEY_R, 17},
- {GLFW_KEY_5, 18},
- {GLFW_KEY_T, 19},
- {GLFW_KEY_6, 20},
- {GLFW_KEY_Y, 21},
- {GLFW_KEY_7, 22},
- {GLFW_KEY_U, 23},
- {GLFW_KEY_I, 24},
- {GLFW_KEY_9, 25},
- {GLFW_KEY_O, 26},
- {GLFW_KEY_0, 27},
- {GLFW_KEY_P, 28},
- {GLFW_KEY_LEFT_BRACKET, 29},
- {GLFW_KEY_EQUAL, 30},
- {GLFW_KEY_RIGHT_BRACKET, 31},
- },
- {
- {GLFW_KEY_KP_DIVIDE, CMD_OCTAVE_DOWN},
- {GLFW_KEY_KP_MULTIPLY, CMD_OCTAVE_UP},
-
- {GLFW_KEY_KP_0, 0},
- {GLFW_KEY_KP_DECIMAL, 2},
- {GLFW_KEY_KP_ENTER, 3},
-
- {GLFW_KEY_KP_1, 4},
- {GLFW_KEY_KP_2, 5},
- {GLFW_KEY_KP_3, 6},
-
- {GLFW_KEY_KP_4, 8},
- {GLFW_KEY_KP_5, 9},
- {GLFW_KEY_KP_6, 10},
- {GLFW_KEY_KP_ADD, 11},
-
- {GLFW_KEY_KP_7, 12},
- {GLFW_KEY_KP_8, 13},
- {GLFW_KEY_KP_9, 14},
- },
- };
-
-
- struct InputDevice : midi::InputDevice {
- int deviceId;
- int octave = 5;
- std::map<int, int> pressedNotes;
-
- void onKeyPress(int key) {
- // Do nothing if no ports are subscribed
- if (subscribed.empty())
- return;
- auto keyNote = deviceKeyNote[deviceId];
- auto it = keyNote.find(key);
- if (it == keyNote.end())
- return;
- int note = it->second;
-
- if (note < 0) {
- if (note == CMD_OCTAVE_DOWN)
- octave--;
- else if (note == CMD_OCTAVE_UP)
- octave++;
- octave = math::clamp(octave, 0, 9);
- return;
- }
-
- note += 12 * octave;
- if (note > 127)
- return;
-
- // MIDI note on
- midi::Message msg;
- msg.setStatus(0x9);
- msg.setNote(note);
- msg.setValue(127);
- onMessage(msg);
-
- pressedNotes[key] = note;
- }
-
- void onKeyRelease(int key) {
- // Do nothing if no ports are subscribed
- if (subscribed.empty())
- return;
- auto it = pressedNotes.find(key);
- if (it == pressedNotes.end())
- return;
-
- int note = it->second;
- // MIDI note off
- midi::Message msg;
- msg.setStatus(0x8);
- msg.setNote(note);
- msg.setValue(127);
- onMessage(msg);
-
- pressedNotes.erase(it);
- }
- };
-
-
- struct Driver : midi::Driver {
- InputDevice devices[deviceCount];
-
- Driver() {
- for (int deviceId = 0; deviceId < deviceCount; deviceId++) {
- devices[deviceId].deviceId = deviceId;
- }
- devices[1].octave = 3;
- }
-
- std::string getName() override {
- return "Computer keyboard";
- }
-
- std::vector<int> getInputDeviceIds() override {
- std::vector<int> deviceIds;
- for (int deviceId = 0; deviceId < deviceCount; deviceId++) {
- deviceIds.push_back(deviceId);
- }
- return deviceIds;
- }
-
- std::string getInputDeviceName(int deviceId) override {
- if (deviceId == 0)
- return "QWERTY keyboard (US)";
- else if (deviceId == 1)
- return "Numpad keyboard (US)";
- return "";
- }
-
- midi::InputDevice* subscribeInput(int deviceId, midi::Input* input) override {
- if (!(0 <= deviceId && deviceId < deviceCount))
- return NULL;
- devices[deviceId].subscribe(input);
- return &devices[deviceId];
- }
-
- void unsubscribeInput(int deviceId, midi::Input* input) override {
- if (!(0 <= deviceId && deviceId < deviceCount))
- return;
- devices[deviceId].unsubscribe(input);
- }
-
- void onKeyPress(int key) {
- for (int deviceId = 0; deviceId < deviceCount; deviceId++) {
- devices[deviceId].onKeyPress(key);
- }
- }
-
- void onKeyRelease(int key) {
- for (int deviceId = 0; deviceId < deviceCount; deviceId++) {
- devices[deviceId].onKeyRelease(key);
- }
- }
- };
-
-
- void init() {
- driver = new Driver;
- midi::addDriver(DRIVER, driver);
- }
-
- void press(int key) {
- if (!driver)
- return;
- driver->onKeyPress(key);
- }
-
- void release(int key) {
- if (!driver)
- return;
- driver->onKeyRelease(key);
- }
-
-
- } // namespace keyboard
- } // namespace rack
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