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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>
/** \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 USB_6KRO_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 add key byte
*
* FIXME: Needs doc
*/
void add_key_byte(report_keyboard_t* keyboard_report, uint8_t code)
{
#ifdef USB_6KRO_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 USB_6KRO_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));
}
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