summaryrefslogtreecommitdiff
path: root/quantum/process_keycode
diff options
context:
space:
mode:
Diffstat (limited to 'quantum/process_keycode')
-rw-r--r--quantum/process_keycode/process_steno.c312
-rw-r--r--quantum/process_keycode/process_steno.h24
2 files changed, 188 insertions, 148 deletions
diff --git a/quantum/process_keycode/process_steno.c b/quantum/process_keycode/process_steno.c
index 12ee898212..20b8b9db4b 100644
--- a/quantum/process_keycode/process_steno.c
+++ b/quantum/process_keycode/process_steno.c
@@ -1,4 +1,4 @@
-/* Copyright 2017 Joseph Wasson
+/* Copyright 2017, 2022 Joseph Wasson, Vladislav Kucheriavykh
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -15,77 +15,118 @@
*/
#include "process_steno.h"
#include "quantum_keycodes.h"
-#include "eeprom.h"
#include "keymap_steno.h"
-#include "virtser.h"
#include <string.h>
+#ifdef VIRTSER_ENABLE
+# include "virtser.h"
+#endif
+#ifdef STENO_ENABLE_ALL
+# include "eeprom.h"
+#endif
-// TxBolt Codes
-#define TXB_NUL 0
-#define TXB_S_L 0b00000001
-#define TXB_T_L 0b00000010
-#define TXB_K_L 0b00000100
-#define TXB_P_L 0b00001000
-#define TXB_W_L 0b00010000
-#define TXB_H_L 0b00100000
-#define TXB_R_L 0b01000001
-#define TXB_A_L 0b01000010
-#define TXB_O_L 0b01000100
-#define TXB_STR 0b01001000
-#define TXB_E_R 0b01010000
-#define TXB_U_R 0b01100000
-#define TXB_F_R 0b10000001
-#define TXB_R_R 0b10000010
-#define TXB_P_R 0b10000100
-#define TXB_B_R 0b10001000
-#define TXB_L_R 0b10010000
-#define TXB_G_R 0b10100000
-#define TXB_T_R 0b11000001
-#define TXB_S_R 0b11000010
-#define TXB_D_R 0b11000100
-#define TXB_Z_R 0b11001000
-#define TXB_NUM 0b11010000
-
-#define TXB_GRP0 0b00000000
-#define TXB_GRP1 0b01000000
-#define TXB_GRP2 0b10000000
-#define TXB_GRP3 0b11000000
-#define TXB_GRPMASK 0b11000000
-
-#define TXB_GET_GROUP(code) ((code & TXB_GRPMASK) >> 6)
-
-#define BOLT_STATE_SIZE 4
-#define GEMINI_STATE_SIZE 6
-#define MAX_STATE_SIZE GEMINI_STATE_SIZE
-
-static uint8_t state[MAX_STATE_SIZE] = {0};
-static uint8_t chord[MAX_STATE_SIZE] = {0};
-static int8_t pressed = 0;
+// All steno keys that have been pressed to form this chord,
+// stored in MAX_STROKE_SIZE groups of 8-bit arrays.
+static uint8_t chord[MAX_STROKE_SIZE] = {0};
+// The number of physical keys actually being held down.
+// This is not always equal to the number of 1 bits in `chord` because it is possible to
+// simultaneously press down four keys, then release three of those four keys and then press yet
+// another key while the fourth finger is still holding down its key.
+// At the end of this scenario given as an example, `chord` would have five bits set to 1 but
+// `n_pressed_keys` would be set to 2 because there are only two keys currently being pressed down.
+static int8_t n_pressed_keys = 0;
+
+#ifdef STENO_ENABLE_ALL
static steno_mode_t mode;
-
-static const uint8_t boltmap[64] PROGMEM = {TXB_NUL, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_S_L, TXB_S_L, TXB_T_L, TXB_K_L, TXB_P_L, TXB_W_L, TXB_H_L, TXB_R_L, TXB_A_L, TXB_O_L, TXB_STR, TXB_STR, TXB_NUL, TXB_NUL, TXB_NUL, TXB_STR, TXB_STR, TXB_E_R, TXB_U_R, TXB_F_R, TXB_R_R, TXB_P_R, TXB_B_R, TXB_L_R, TXB_G_R, TXB_T_R, TXB_S_R, TXB_D_R, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_Z_R};
-
-#ifdef STENO_COMBINEDMAP
-/* Used to look up when pressing the middle row key to combine two consonant or vowel keys */
-static const uint16_t combinedmap_first[] PROGMEM = {STN_S1, STN_TL, STN_PL, STN_HL, STN_FR, STN_PR, STN_LR, STN_TR, STN_DR, STN_A, STN_E};
-static const uint16_t combinedmap_second[] PROGMEM = {STN_S2, STN_KL, STN_WL, STN_RL, STN_RR, STN_BR, STN_GR, STN_SR, STN_ZR, STN_O, STN_U};
+#elif defined(STENO_ENABLE_GEMINI)
+static const steno_mode_t mode = STENO_MODE_GEMINI;
+#elif defined(STENO_ENABLE_BOLT)
+static const steno_mode_t mode = STENO_MODE_BOLT;
#endif
-static void steno_clear_state(void) {
- memset(state, 0, sizeof(state));
+static inline void steno_clear_chord(void) {
memset(chord, 0, sizeof(chord));
}
-static void send_steno_state(uint8_t size, bool send_empty) {
- for (uint8_t i = 0; i < size; ++i) {
- if (chord[i] || send_empty) {
-#ifdef VIRTSER_ENABLE
+#ifdef STENO_ENABLE_GEMINI
+
+# ifdef VIRTSER_ENABLE
+void send_steno_chord_gemini(void) {
+ // Set MSB to 1 to indicate the start of packet
+ chord[0] |= 0x80;
+ for (uint8_t i = 0; i < GEMINI_STROKE_SIZE; ++i) {
+ virtser_send(chord[i]);
+ }
+}
+# else
+# pragma message "VIRTSER_ENABLE = yes is required for Gemini PR to work properly out of the box!"
+# endif // VIRTSER_ENABLE
+
+/**
+ * @precondition: `key` is pressed
+ */
+bool add_gemini_key_to_chord(uint8_t key) {
+ // Although each group of the packet is 8 bits long, the MSB is reserved
+ // to indicate whether that byte is the first byte of the packet (MSB=1)
+ // or one of the remaining five bytes of the packet (MSB=0).
+ // As a consequence, only 7 out of the 8 bits are left to be used as a bit array
+ // for the steno keys of that group.
+ const int group_idx = key / 7;
+ const int intra_group_idx = key - group_idx * 7;
+ // The 0th steno key of the group has bit=0b01000000, the 1st has bit=0b00100000, etc.
+ const uint8_t bit = 1 << (6 - intra_group_idx);
+ chord[group_idx] |= bit;
+ return false;
+}
+#endif // STENO_ENABLE_GEMINI
+
+#ifdef STENO_ENABLE_BOLT
+
+# define TXB_GRP0 0b00000000
+# define TXB_GRP1 0b01000000
+# define TXB_GRP2 0b10000000
+# define TXB_GRP3 0b11000000
+# define TXB_GRPMASK 0b11000000
+
+# define TXB_GET_GROUP(code) ((code & TXB_GRPMASK) >> 6)
+
+static const uint8_t boltmap[64] PROGMEM = {TXB_NUL, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_S_L, TXB_S_L, TXB_T_L, TXB_K_L, TXB_P_L, TXB_W_L, TXB_H_L, TXB_R_L, TXB_A_L, TXB_O_L, TXB_STR, TXB_STR, TXB_NUL, TXB_NUL, TXB_NUL, TXB_STR, TXB_STR, TXB_E_R, TXB_U_R, TXB_F_R, TXB_R_R, TXB_P_R, TXB_B_R, TXB_L_R, TXB_G_R, TXB_T_R, TXB_S_R, TXB_D_R, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_NUM, TXB_Z_R};
+
+# ifdef VIRTSER_ENABLE
+static void send_steno_chord_bolt(void) {
+ for (uint8_t i = 0; i < BOLT_STROKE_SIZE; ++i) {
+ // TX Bolt uses variable length packets where each byte corresponds to a bit array of certain keys.
+ // If a user chorded the keys of the first group with keys of the last group, for example, there
+ // would be bytes of 0x00 in `chord` for the middle groups which we mustn't send.
+ if (chord[i]) {
virtser_send(chord[i]);
-#endif
}
}
+ // Sending a null packet is not always necessary, but it is simpler and more reliable
+ // to unconditionally send it every time instead of keeping track of more states and
+ // creating more branches in the execution of the program.
+ virtser_send(0);
}
+# else
+# pragma message "VIRTSER_ENABLE = yes is required for TX Bolt to work properly out of the box!"
+# endif // VIRTSER_ENABLE
+
+/**
+ * @precondition: `key` is pressed
+ */
+static bool add_bolt_key_to_chord(uint8_t key) {
+ uint8_t boltcode = pgm_read_byte(boltmap + key);
+ chord[TXB_GET_GROUP(boltcode)] |= boltcode;
+ return false;
+}
+#endif // STENO_ENABLE_BOLT
+
+#ifdef STENO_COMBINEDMAP
+/* Used to look up when pressing the middle row key to combine two consonant or vowel keys */
+static const uint16_t combinedmap_first[] PROGMEM = {STN_S1, STN_TL, STN_PL, STN_HL, STN_FR, STN_PR, STN_LR, STN_TR, STN_DR, STN_A, STN_E};
+static const uint16_t combinedmap_second[] PROGMEM = {STN_S2, STN_KL, STN_WL, STN_RL, STN_RR, STN_BR, STN_GR, STN_SR, STN_ZR, STN_O, STN_U};
+#endif
+#ifdef STENO_ENABLE_ALL
void steno_init() {
if (!eeconfig_is_enabled()) {
eeconfig_init();
@@ -94,19 +135,20 @@ void steno_init() {
}
void steno_set_mode(steno_mode_t new_mode) {
- steno_clear_state();
+ steno_clear_chord();
mode = new_mode;
eeprom_update_byte(EECONFIG_STENOMODE, mode);
}
+#endif // STENO_ENABLE_ALL
/* override to intercept chords right before they get sent.
* return zero to suppress normal sending behavior.
*/
-__attribute__((weak)) bool send_steno_chord_user(steno_mode_t mode, uint8_t chord[6]) {
+__attribute__((weak)) bool send_steno_chord_user(steno_mode_t mode, uint8_t chord[MAX_STROKE_SIZE]) {
return true;
}
-__attribute__((weak)) bool postprocess_steno_user(uint16_t keycode, keyrecord_t *record, steno_mode_t mode, uint8_t chord[6], int8_t pressed) {
+__attribute__((weak)) bool postprocess_steno_user(uint16_t keycode, keyrecord_t *record, steno_mode_t mode, uint8_t chord[MAX_STROKE_SIZE], int8_t n_pressed_keys) {
return true;
}
@@ -114,108 +156,94 @@ __attribute__((weak)) bool process_steno_user(uint16_t keycode, keyrecord_t *rec
return true;
}
-static void send_steno_chord(void) {
- if (send_steno_chord_user(mode, chord)) {
- switch (mode) {
- case STENO_MODE_BOLT:
- send_steno_state(BOLT_STATE_SIZE, false);
-#ifdef VIRTSER_ENABLE
- virtser_send(0); // terminating byte
-#endif
- break;
- case STENO_MODE_GEMINI:
- chord[0] |= 0x80; // Indicate start of packet
- send_steno_state(GEMINI_STATE_SIZE, true);
- break;
- }
+bool process_steno(uint16_t keycode, keyrecord_t *record) {
+ if (keycode < QK_STENO || keycode > QK_STENO_MAX) {
+ return true; // Not a steno key, pass it further along the chain
+ /*
+ * Clearing or sending the chord state is not necessary as we intentionally ignore whatever
+ * normal keyboard keys the user may have tapped while chording steno keys.
+ */
}
- steno_clear_state();
-}
-
-uint8_t *steno_get_state(void) {
- return &state[0];
-}
-
-uint8_t *steno_get_chord(void) {
- return &chord[0];
-}
-
-static bool update_state_bolt(uint8_t key, bool press) {
- uint8_t boltcode = pgm_read_byte(boltmap + key);
- if (press) {
- state[TXB_GET_GROUP(boltcode)] |= boltcode;
- chord[TXB_GET_GROUP(boltcode)] |= boltcode;
- } else {
- state[TXB_GET_GROUP(boltcode)] &= ~boltcode;
+ if (IS_NOEVENT(record->event)) {
+ return true;
}
- return false;
-}
-
-static bool update_state_gemini(uint8_t key, bool press) {
- int idx = key / 7;
- uint8_t bit = 1 << (6 - (key % 7));
- if (press) {
- state[idx] |= bit;
- chord[idx] |= bit;
- } else {
- state[idx] &= ~bit;
+ if (!process_steno_user(keycode, record)) {
+ return false; // User fully processed the steno key themselves
}
- return false;
-}
-
-bool process_steno(uint16_t keycode, keyrecord_t *record) {
switch (keycode) {
+#ifdef STENO_ENABLE_ALL
case QK_STENO_BOLT:
- if (!process_steno_user(keycode, record)) {
- return false;
- }
if (IS_PRESSED(record->event)) {
steno_set_mode(STENO_MODE_BOLT);
}
return false;
case QK_STENO_GEMINI:
- if (!process_steno_user(keycode, record)) {
- return false;
- }
if (IS_PRESSED(record->event)) {
steno_set_mode(STENO_MODE_GEMINI);
}
return false;
+#endif // STENO_ENABLE_ALL
#ifdef STENO_COMBINEDMAP
case QK_STENO_COMB ... QK_STENO_COMB_MAX: {
- uint8_t result;
- result = process_steno(combinedmap_first[keycode - QK_STENO_COMB], record);
- result &= process_steno(combinedmap_second[keycode - QK_STENO_COMB], record);
- return result;
+ bool first_result = process_steno(combinedmap_first[keycode - QK_STENO_COMB], record);
+ bool second_result = process_steno(combinedmap_second[keycode - QK_STENO_COMB], record);
+ return first_result && second_result;
}
-#endif
+#endif // STENO_COMBINEDMAP
case STN__MIN ... STN__MAX:
- if (!process_steno_user(keycode, record)) {
- return false;
- }
- switch (mode) {
- case STENO_MODE_BOLT:
- update_state_bolt(keycode - QK_STENO, IS_PRESSED(record->event));
- break;
- case STENO_MODE_GEMINI:
- update_state_gemini(keycode - QK_STENO, IS_PRESSED(record->event));
- break;
- }
- // allow postprocessing hooks
- if (postprocess_steno_user(keycode, record, mode, chord, pressed)) {
- if (IS_PRESSED(record->event)) {
- ++pressed;
- } else {
- --pressed;
- if (pressed <= 0) {
- pressed = 0;
- send_steno_chord();
- }
+ if (IS_PRESSED(record->event)) {
+ n_pressed_keys++;
+ switch (mode) {
+#ifdef STENO_ENABLE_BOLT
+ case STENO_MODE_BOLT:
+ add_bolt_key_to_chord(keycode - QK_STENO);
+ break;
+#endif // STENO_ENABLE_BOLT
+#ifdef STENO_ENABLE_GEMINI
+ case STENO_MODE_GEMINI:
+ add_gemini_key_to_chord(keycode - QK_STENO);
+ break;
+#endif // STENO_ENABLE_GEMINI
+ default:
+ return false;
}
+ if (!postprocess_steno_user(keycode, record, mode, chord, n_pressed_keys)) {
+ return false;
+ }
+ } else { // is released
+ n_pressed_keys--;
+ if (!postprocess_steno_user(keycode, record, mode, chord, n_pressed_keys)) {
+ return false;
+ }
+ if (n_pressed_keys > 0) {
+ // User hasn't released all keys yet,
+ // so the chord cannot be sent
+ return false;
+ }
+ n_pressed_keys = 0;
+ if (!send_steno_chord_user(mode, chord)) {
+ steno_clear_chord();
+ return false;
+ }
+ switch (mode) {
+#if defined(STENO_ENABLE_BOLT) && defined(VIRTSER_ENABLE)
+ case STENO_MODE_BOLT:
+ send_steno_chord_bolt();
+ break;
+#endif // STENO_ENABLE_BOLT && VIRTSER_ENABLE
+#if defined(STENO_ENABLE_GEMINI) && defined(VIRTSER_ENABLE)
+ case STENO_MODE_GEMINI:
+ send_steno_chord_gemini();
+ break;
+#endif // STENO_ENABLE_GEMINI && VIRTSER_ENABLE
+ default:
+ break;
+ }
+ steno_clear_chord();
}
- return false;
+ break;
}
- return true;
+ return false;
}
diff --git a/quantum/process_keycode/process_steno.h b/quantum/process_keycode/process_steno.h
index d11fd40af0..68d6097b9b 100644
--- a/quantum/process_keycode/process_steno.h
+++ b/quantum/process_keycode/process_steno.h
@@ -18,10 +18,22 @@
#include "quantum.h"
-typedef enum { STENO_MODE_BOLT, STENO_MODE_GEMINI } steno_mode_t;
+#define BOLT_STROKE_SIZE 4
+#define GEMINI_STROKE_SIZE 6
-bool process_steno(uint16_t keycode, keyrecord_t *record);
-void steno_init(void);
-void steno_set_mode(steno_mode_t mode);
-uint8_t *steno_get_state(void);
-uint8_t *steno_get_chord(void);
+#ifdef STENO_ENABLE_GEMINI
+# define MAX_STROKE_SIZE GEMINI_STROKE_SIZE
+#else
+# define MAX_STROKE_SIZE BOLT_STROKE_SIZE
+#endif
+
+typedef enum {
+ STENO_MODE_GEMINI,
+ STENO_MODE_BOLT,
+} steno_mode_t;
+
+bool process_steno(uint16_t keycode, keyrecord_t *record);
+#ifdef STENO_ENABLE_ALL
+void steno_init(void);
+void steno_set_mode(steno_mode_t mode);
+#endif // STENO_ENABLE_ALL
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 21:31:30 +0000