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/* Copyright 2017 Fred Sundvik
*
* 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
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "report.h"
#include "host.h"
#include "keycode_config.h"
#include "debug.h"
#include "util.h"
#include <string.h>
#ifdef RING_BUFFERED_6KRO_REPORT_ENABLE
# define RO_ADD(a, b) ((a + b) % KEYBOARD_REPORT_KEYS)
# define RO_SUB(a, b) ((a - b + KEYBOARD_REPORT_KEYS) % KEYBOARD_REPORT_KEYS)
# define RO_INC(a) RO_ADD(a, 1)
# define RO_DEC(a) RO_SUB(a, 1)
static int8_t cb_head = 0;
static int8_t cb_tail = 0;
static int8_t cb_count = 0;
#endif
/** \brief has_anykey
*
* FIXME: Needs doc
*/
uint8_t has_anykey(report_keyboard_t* keyboard_report) {
uint8_t cnt = 0;
uint8_t* p = keyboard_report->keys;
uint8_t lp = sizeof(keyboard_report->keys);
#ifdef NKRO_ENABLE
if (keyboard_protocol && keymap_config.nkro) {
p = keyboard_report->nkro.bits;
lp = sizeof(keyboard_report->nkro.bits);
}
#endif
while (lp--) {
if (*p++) cnt++;
}
return cnt;
}
/** \brief get_first_key
*
* FIXME: Needs doc
*/
uint8_t get_first_key(report_keyboard_t* keyboard_report) {
#ifdef NKRO_ENABLE
if (keyboard_protocol && keymap_config.nkro) {
uint8_t i = 0;
for (; i < KEYBOARD_REPORT_BITS && !keyboard_report->nkro.bits[i]; i++)
;
return i << 3 | biton(keyboard_report->nkro.bits[i]);
}
#endif
#ifdef RING_BUFFERED_6KRO_REPORT_ENABLE
uint8_t i = cb_head;
do {
if (keyboard_report->keys[i] != 0) {
break;
}
i = RO_INC(i);
} while (i != cb_tail);
return keyboard_report->keys[i];
#else
return keyboard_report->keys[0];
#endif
}
/** \brief Checks if a key is pressed in the report
*
* Returns true if the keyboard_report reports that the key is pressed, otherwise false
* Note: The function doesn't support modifers currently, and it returns false for KC_NO
*/
bool is_key_pressed(report_keyboard_t* keyboard_report, uint8_t key) {
if (key == KC_NO) {
return false;
}
#ifdef NKRO_ENABLE
if (keyboard_protocol && keymap_config.nkro) {
if ((key >> 3) < KEYBOARD_REPORT_BITS) {
return keyboard_report->nkro.bits[key >> 3] & 1 << (key & 7);
} else {
return false;
}
}
#endif
for (int i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
if (keyboard_report->keys[i] == key) {
return true;
}
}
return false;
}
/** \brief add key byte
*
* FIXME: Needs doc
*/
void add_key_byte(report_keyboard_t* keyboard_report, uint8_t code) {
#ifdef RING_BUFFERED_6KRO_REPORT_ENABLE
int8_t i = cb_head;
int8_t empty = -1;
if (cb_count) {
do {
if (keyboard_report->keys[i] == code) {
return;
}
if (empty == -1 && keyboard_report->keys[i] == 0) {
empty = i;
}
i = RO_INC(i);
} while (i != cb_tail);
if (i == cb_tail) {
if (cb_tail == cb_head) {
// buffer is full
if (empty == -1) {
// pop head when has no empty space
cb_head = RO_INC(cb_head);
cb_count--;
} else {
// left shift when has empty space
uint8_t offset = 1;
i = RO_INC(empty);
do {
if (keyboard_report->keys[i] != 0) {
keyboard_report->keys[empty] = keyboard_report->keys[i];
keyboard_report->keys[i] = 0;
empty = RO_INC(empty);
} else {
offset++;
}
i = RO_INC(i);
} while (i != cb_tail);
cb_tail = RO_SUB(cb_tail, offset);
}
}
}
}
// add to tail
keyboard_report->keys[cb_tail] = code;
cb_tail = RO_INC(cb_tail);
cb_count++;
#else
int8_t i = 0;
int8_t empty = -1;
for (; i < KEYBOARD_REPORT_KEYS; i++) {
if (keyboard_report->keys[i] == code) {
break;
}
if (empty == -1 && keyboard_report->keys[i] == 0) {
empty = i;
}
}
if (i == KEYBOARD_REPORT_KEYS) {
if (empty != -1) {
keyboard_report->keys[empty] = code;
}
}
#endif
}
/** \brief del key byte
*
* FIXME: Needs doc
*/
void del_key_byte(report_keyboard_t* keyboard_report, uint8_t code) {
#ifdef RING_BUFFERED_6KRO_REPORT_ENABLE
uint8_t i = cb_head;
if (cb_count) {
do {
if (keyboard_report->keys[i] == code) {
keyboard_report->keys[i] = 0;
cb_count--;
if (cb_count == 0) {
// reset head and tail
cb_tail = cb_head = 0;
}
if (i == RO_DEC(cb_tail)) {
// left shift when next to tail
do {
cb_tail = RO_DEC(cb_tail);
if (keyboard_report->keys[RO_DEC(cb_tail)] != 0) {
break;
}
} while (cb_tail != cb_head);
}
break;
}
i = RO_INC(i);
} while (i != cb_tail);
}
#else
for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
if (keyboard_report->keys[i] == code) {
keyboard_report->keys[i] = 0;
}
}
#endif
}
#ifdef NKRO_ENABLE
/** \brief add key bit
*
* FIXME: Needs doc
*/
void add_key_bit(report_keyboard_t* keyboard_report, uint8_t code) {
if ((code >> 3) < KEYBOARD_REPORT_BITS) {
keyboard_report->nkro.bits[code >> 3] |= 1 << (code & 7);
} else {
dprintf("add_key_bit: can't add: %02X\n", code);
}
}
/** \brief del key bit
*
* FIXME: Needs doc
*/
void del_key_bit(report_keyboard_t* keyboard_report, uint8_t code) {
if ((code >> 3) < KEYBOARD_REPORT_BITS) {
keyboard_report->nkro.bits[code >> 3] &= ~(1 << (code & 7));
} else {
dprintf("del_key_bit: can't del: %02X\n", code);
}
}
#endif
/** \brief add key to report
*
* FIXME: Needs doc
*/
void add_key_to_report(report_keyboard_t* keyboard_report, uint8_t key) {
#ifdef NKRO_ENABLE
if (keyboard_protocol && keymap_config.nkro) {
add_key_bit(keyboard_report, key);
return;
}
#endif
add_key_byte(keyboard_report, key);
}
/** \brief del key from report
*
* FIXME: Needs doc
*/
void del_key_from_report(report_keyboard_t* keyboard_report, uint8_t key) {
#ifdef NKRO_ENABLE
if (keyboard_protocol && keymap_config.nkro) {
del_key_bit(keyboard_report, key);
return;
}
#endif
del_key_byte(keyboard_report, key);
}
/** \brief clear key from report
*
* FIXME: Needs doc
*/
void clear_keys_from_report(report_keyboard_t* keyboard_report) {
// not clear mods
#ifdef NKRO_ENABLE
if (keyboard_protocol && keymap_config.nkro) {
memset(keyboard_report->nkro.bits, 0, sizeof(keyboard_report->nkro.bits));
return;
}
#endif
memset(keyboard_report->keys, 0, sizeof(keyboard_report->keys));
}
#ifdef MOUSE_ENABLE
/**
* @brief Compares 2 mouse reports for difference and returns result. Empty
* reports always evaluate as unchanged.
*
* @param[in] new_report report_mouse_t
* @param[in] old_report report_mouse_t
* @return bool result
*/
__attribute__((weak)) bool has_mouse_report_changed(report_mouse_t* new_report, report_mouse_t* old_report) {
// memcmp doesn't work here because of the `report_id` field when using
// shared mouse endpoint
bool changed = ((new_report->buttons != old_report->buttons) ||
# ifdef MOUSE_EXTENDED_REPORT
(new_report->boot_x != 0 && new_report->boot_x != old_report->boot_x) || (new_report->boot_y != 0 && new_report->boot_y != old_report->boot_y) ||
# endif
(new_report->x != 0 && new_report->x != old_report->x) || (new_report->y != 0 && new_report->y != old_report->y) || (new_report->h != 0 && new_report->h != old_report->h) || (new_report->v != 0 && new_report->v != old_report->v));
return changed;
}
#endif
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