gBoards Common (#8921)
Co-Authored-By: Drashna Jaelre <drashna@live.com>
This commit is contained in:
Jeremy Bernhardt
GitHub
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458
keyboards/gboards/engine/engine.c
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458
keyboards/gboards/engine/engine.c
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/* This is a stripped down version of the Georgi engine meant for use with
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* Ginni. As such serial-Steno features are disabled, chords are 16bits and
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* crap is removed where possible
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*
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* Do not use this on anything other then Ginny if you want to be sane
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*/
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#include "engine.h"
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// Chord state
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C_SIZE cChord = 0; // Current Chord
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int chordIndex = 0; // Keys in previousachord
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C_SIZE pressed = 0; // number of held keys
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C_SIZE chordState[32]; // Full Chord history
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#define QWERBUF 24 // Size of chords to buffer for output
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bool repeatFlag = false; // Should we repeat?
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C_SIZE pChord = 0; // Previous Chord
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C_SIZE stickyBits = 0; // Or'd with every incoming press
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int pChordIndex = 0; // Keys in previousachord
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C_SIZE pChordState[32]; // Previous chord sate
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// Key Dicts
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extern const struct keyEntry keyDict[];
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extern const struct comboEntry cmbDict[];
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extern const struct funcEntry funDict[];
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extern const struct stringEntry strDict[];
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extern const struct specialEntry spcDict[];
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extern size_t specialLen;
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extern size_t stringLen;
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extern size_t funcsLen;
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extern size_t keyLen;
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extern size_t comboLen;
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// Mode state
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enum MODE { STENO = 0, QWERTY, COMMAND };
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enum MODE pMode;
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enum MODE cMode = QWERTY;
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// Command State
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#define MAX_CMD_BUF 20
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uint8_t CMDLEN = 0;
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uint8_t CMDBUF[MAX_CMD_BUF];
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// Key Repeat state
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bool inChord = false;
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bool repEngaged = false;
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uint16_t repTimer = 0;
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#define REP_INIT_DELAY 750
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#define REP_DELAY 25
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// Mousekeys state
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bool inMouse = false;
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int8_t mousePress;
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// All processing done at chordUp goes through here
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void processKeysUp() {
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// Check for mousekeys, this is release
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#ifdef MOUSEKEY_ENABLE
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if (inMouse) {
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inMouse = false;
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mousekey_off(mousePress);
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mousekey_send();
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}
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#endif
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// handle command mode
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if (cChord == COMMAND_MODE) {
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#ifndef NO_DEBUG
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uprintf("COMMAND Toggle\n");
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#endif
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if (cMode != COMMAND) { // Entering Command Mode
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CMDLEN = 0;
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pMode = cMode;
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cMode = COMMAND;
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} else { // Exiting Command Mode
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cMode = pMode;
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// Press all and release all
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for (int i = 0; i < CMDLEN; i++) {
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register_code(CMDBUF[i]);
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}
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clear_keyboard();
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}
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}
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// Process and reset state
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processChord();
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cChord = pressed;
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inChord = false;
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chordIndex = 0;
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clear_keyboard();
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repEngaged = false;
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for (int i = 0; i < 32; i++) chordState[i] = 0xFFFF;
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}
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// Update Chord State
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bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
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// Everything happens in here when steno keys come in.
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// Bail on keyup
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// Update key repeat timers
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repTimer = timer_read();
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bool pr = record->event.pressed;
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// Switch on the press adding to chord
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switch (keycode) {
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ENGINE_CONFIG
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default:
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return true;
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}
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// Handle any postprocessing
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// All keys up, send it!
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if (inChord && !pr && (pressed & IN_CHORD_MASK) == 0) {
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processKeysUp();
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return false;
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}
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if (pressed == 0 && !pr) {
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processKeysUp();
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return false;
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}
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cChord |= pressed;
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cChord = process_engine_post(cChord, keycode, record);
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inChord = (cChord & IN_CHORD_MASK) != 0;
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// Store previous state for fastQWER
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if (pr) {
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chordState[chordIndex] = cChord;
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chordIndex++;
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}
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#ifndef NO_DEBUG
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uprintf("Chord: %u\n", cChord);
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#endif
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return false;
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}
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void matrix_scan_user(void) {
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// We abuse this for early sending of key
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// Key repeat only on QWER/SYMB layers
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if (cMode != QWERTY || !inChord) return;
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// Check timers
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#ifndef NO_HOLD
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if (!repEngaged && timer_elapsed(repTimer) > REP_INIT_DELAY) {
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// Process Key for report
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processChord();
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// Send report to host
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send_keyboard_report();
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repEngaged = true;
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}
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#endif
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};
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// Try and match cChord
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C_SIZE mapKeys(C_SIZE chord, bool lookup) {
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lookup = lookup || repEngaged;
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#ifndef NO_DEBUG
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if (!lookup) uprint("SENT!\n");
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#endif
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// Single key chords
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for (int i = 0; i < keyLen; i++) {
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if (keyDict[i].chord == chord) {
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if (!lookup) SEND(keyDict[i].key);
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return chord;
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}
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}
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// strings
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for (int i = 0; i < stringLen; i++) {
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struct stringEntry fromPgm;
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memcpy_P(&fromPgm, &strDict[i], sizeof(stringEntry_t));
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if (fromPgm.chord == chord) {
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if (!lookup) {
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if (get_mods() & (MOD_LSFT | MOD_RSFT)) {
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set_mods(get_mods() & ~(MOD_LSFT | MOD_RSFT));
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set_oneshot_mods(MOD_LSFT);
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}
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send_string_P((PGM_P)(fromPgm.str));
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}
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return chord;
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}
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}
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// combos
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for (int i = 0; i < comboLen; i++) {
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struct comboEntry fromPgm;
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memcpy_P(&fromPgm, &cmbDict[i], sizeof(comboEntry_t));
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if (fromPgm.chord == chord) {
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#ifndef NO_DEBUG
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uprintf("%d found combo\n", i);
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#endif
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if (!lookup) {
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uint8_t comboKeys[COMBO_MAX];
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memcpy_P(&comboKeys, fromPgm.keys, sizeof(uint8_t) * COMBO_MAX);
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for (int j = 0; j < COMBO_MAX; j++)
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#ifndef NO_DEBUG
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uprintf("Combo [%u]: %u\n", j, comboKeys[j]);
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#endif
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for (int j = 0; (j < COMBO_MAX) && (comboKeys[j] != COMBO_END); j++) {
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#ifndef NO_DEBUG
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uprintf("Combo [%u]: %u\n", j, comboKeys[j]);
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#endif
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SEND(comboKeys[j]);
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}
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}
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return chord;
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}
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}
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// functions
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for (int i = 0; i < funcsLen; i++) {
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if (funDict[i].chord == chord) {
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if (!lookup) funDict[i].act();
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return chord;
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}
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}
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// Special handling
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for (int i = 0; i < specialLen; i++) {
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if (spcDict[i].chord == chord) {
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if (!lookup) {
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uint16_t arg = spcDict[i].arg;
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switch (spcDict[i].action) {
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case SPEC_STICKY:
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SET_STICKY(arg);
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break;
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case SPEC_REPEAT:
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REPEAT();
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break;
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case SPEC_CLICK:
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CLICK_MOUSE((uint8_t)arg);
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break;
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case SPEC_SWITCH:
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SWITCH_LAYER(arg);
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break;
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default:
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SEND_STRING("Invalid Special in Keymap");
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}
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}
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return chord;
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}
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}
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if ((chord & IN_CHORD_MASK) && (chord & IN_CHORD_MASK) != chord && mapKeys((chord & IN_CHORD_MASK), true) == (chord & IN_CHORD_MASK)) {
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#ifndef NO_DEBUG
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uprintf("Try with ignore mask:%u\n", (chord & IN_CHORD_MASK));
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#endif
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mapKeys((chord & ~IN_CHORD_MASK), lookup);
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mapKeys((chord & IN_CHORD_MASK), lookup);
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return chord;
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}
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#ifndef NO_DEBUG
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uprintf("Reached end\n");
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#endif
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return 0;
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}
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// Traverse the chord history to a given point
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// Returns the mask to use
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void processChord(void) {
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// Save the clean chord state
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C_SIZE savedChord = cChord;
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// Apply Stick Bits if needed
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if (stickyBits != 0) {
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cChord |= stickyBits;
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for (int i = 0; i <= chordIndex; i++) chordState[i] |= stickyBits;
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}
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// First we test if a whole chord was passsed
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// If so we just run it handling repeat logic
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if (mapKeys(cChord, true) == cChord) {
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mapKeys(cChord, false);
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// Repeat logic
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if (repeatFlag) {
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#ifndef NO_DEBUG
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uprintf("repeating?\n");
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#endif
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restoreState();
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repeatFlag = false;
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processChord();
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} else {
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saveState(cChord);
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}
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return;
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}
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C_SIZE next = process_chord_getnext(cChord);
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if (next && next != cChord) {
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#ifndef NO_DEBUG
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uprintf("Trying next candidate: %u\n", next);
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#endif
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if (mapKeys(next, true) == next) {
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mapKeys(next, false);
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// Repeat logic
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if (repeatFlag) {
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#ifndef NO_DEBUG
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uprintf("repeating?\n");
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#endif
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restoreState();
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repeatFlag = false;
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processChord();
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} else {
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saveState(cChord);
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}
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return;
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}
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}
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#ifndef NO_DEBUG
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uprintf("made it past the maw\n");
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#endif
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// Iterate through chord picking out the individual
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// and longest chords
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C_SIZE bufChords[QWERBUF];
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int bufLen = 0;
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C_SIZE mask = 0;
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// We iterate over it multiple times to catch the longest
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// chord. Then that gets addded to the mask and re run.
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while (savedChord != mask) {
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C_SIZE test = 0;
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C_SIZE longestChord = 0;
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for (int i = 0; i <= chordIndex; i++) {
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cChord = chordState[i] & ~mask;
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if (cChord == 0) continue;
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test = mapKeys(cChord, true);
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if (test != 0) {
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longestChord = test;
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}
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}
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mask |= longestChord;
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bufChords[bufLen] = longestChord;
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bufLen++;
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// That's a loop of sorts, halt processing
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if (bufLen >= QWERBUF) {
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#ifndef NO_DEBUG
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uprintf("looped. exiting");
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#endif
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return;
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}
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}
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// Now that the buffer is populated, we run it
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for (int i = 0; i < bufLen; i++) {
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cChord = bufChords[i];
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#ifndef NO_DEBUG
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uprintf("sending: %u\n", cChord);
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#endif
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mapKeys(cChord, false);
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}
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// Save state in case of repeat
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if (!repeatFlag) {
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saveState(savedChord);
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}
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// Restore cChord for held repeat
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cChord = savedChord;
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return;
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}
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void saveState(C_SIZE cleanChord) {
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pChord = cleanChord;
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pChordIndex = chordIndex;
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for (int i = 0; i < 32; i++) pChordState[i] = chordState[i];
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}
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void restoreState() {
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cChord = pChord;
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chordIndex = pChordIndex;
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for (int i = 0; i < 32; i++) chordState[i] = pChordState[i];
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}
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// Macros for calling from keymap.c
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void SEND(uint8_t kc) {
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// Send Keycode, Does not work for Quantum Codes
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if (cMode == COMMAND && CMDLEN < MAX_CMD_BUF) {
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#ifndef NO_DEBUG
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uprintf("CMD LEN: %d BUF: %d\n", CMDLEN, MAX_CMD_BUF);
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#endif
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CMDBUF[CMDLEN] = kc;
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CMDLEN++;
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}
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if (cMode != COMMAND) register_code(kc);
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return;
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}
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void REPEAT(void) {
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if (cMode != QWERTY) return;
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repeatFlag = true;
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return;
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}
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void SET_STICKY(C_SIZE stick) {
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stickyBits ^= stick;
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return;
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}
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void CLICK_MOUSE(uint8_t kc) {
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#ifdef MOUSEKEY_ENABLE
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mousekey_on(kc);
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mousekey_send();
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// Store state for later use
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inMouse = true;
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mousePress = kc;
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#endif
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}
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void SWITCH_LAYER(int layer) {
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#ifndef NO_ACTION_LAYER
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if (keymapsCount >= layer) layer_on(layer);
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#endif
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}
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uint8_t bitpop_v(C_SIZE val) {
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#if C_SIZE == uint8_t
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return bitpop(val);
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#elif C_SIZE == uint16_t
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return bitpop16(val);
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#elif C_SIZE == uint32_t
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return bitpop32(val);
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#elif C_SIZE == uint64_t
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uint8_t n = 0;
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if (bits >> 32) {
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bits >>= 32;
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n += 32;
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}
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if (bits >> 16) {
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bits >>= 16;
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n += 16;
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}
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if (bits >> 8) {
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bits >>= 8;
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n += 8;
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}
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if (bits >> 4) {
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bits >>= 4;
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n += 4;
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}
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if (bits >> 2) {
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bits >>= 2;
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n += 2;
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}
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if (bits >> 1) {
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bits >>= 1;
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n += 1;
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}
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return n;
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#else
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# error unsupported C_SIZE
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#endif
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}
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__attribute__((weak)) C_SIZE process_engine_post(C_SIZE cur_chord, uint16_t keycode, keyrecord_t *record) { return cur_chord; }
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