* `DYN_REC_START1` -> `QK_DYNAMIC_MACRO_RECORD_START_1` * `DYN_REC_START2` -> `QK_DYNAMIC_MACRO_RECORD_START_2` * `DYN_MACRO_PLAY1` -> `QK_DYNAMIC_MACRO_PLAY_1` * `DYN_MACRO_PLAY2` -> `QK_DYNAMIC_MACRO_PLAY_2` * `DYN_REC_STOP` -> `QK_DYNAMIC_MACRO_RECORD_STOP` * Update docs
		
			
				
	
	
		
			265 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			265 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/* Copyright 2016 Jack Humbert
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation, either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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/* Author: Wojciech Siewierski < wojciech dot siewierski at onet dot pl > */
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#pragma once
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/* Warn users that this is now deprecated and they should use the core feature instead. */
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#pragma message "Dynamic Macros is now a core feature. See updated documentation to see how to configure it: https://docs.qmk.fm/#/feature_dynamic_macros"
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#include "action_layer.h"
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#ifndef DYNAMIC_MACRO_SIZE
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/* May be overridden with a custom value. Be aware that the effective
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 * macro length is half of this value: each keypress is recorded twice
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 * because of the down-event and up-event. This is not a bug, it's the
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 * intended behavior.
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 *
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 * Usually it should be fine to set the macro size to at least 256 but
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 * there have been reports of it being too much in some users' cases,
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 * so 128 is considered a safe default.
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 */
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#    define DYNAMIC_MACRO_SIZE 128
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#endif
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/* Blink the LEDs to notify the user about some event. */
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void dynamic_macro_led_blink(void) {
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#ifdef BACKLIGHT_ENABLE
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    backlight_toggle();
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    wait_ms(100);
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    backlight_toggle();
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#endif
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}
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/* Convenience macros used for retrieving the debug info. All of them
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 * need a `direction` variable accessible at the call site.
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 */
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#define DYNAMIC_MACRO_CURRENT_SLOT() (direction > 0 ? 1 : 2)
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#define DYNAMIC_MACRO_CURRENT_LENGTH(BEGIN, POINTER) ((int)(direction * ((POINTER) - (BEGIN))))
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#define DYNAMIC_MACRO_CURRENT_CAPACITY(BEGIN, END2) ((int)(direction * ((END2) - (BEGIN)) + 1))
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/**
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 * Start recording of the dynamic macro.
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 *
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 * @param[out] macro_pointer The new macro buffer iterator.
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 * @param[in]  macro_buffer  The macro buffer used to initialize macro_pointer.
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 */
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void dynamic_macro_record_start(keyrecord_t **macro_pointer, keyrecord_t *macro_buffer) {
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    dprintln("dynamic macro recording: started");
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    dynamic_macro_led_blink();
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    clear_keyboard();
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    layer_clear();
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    *macro_pointer = macro_buffer;
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}
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/**
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 * Play the dynamic macro.
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 *
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 * @param macro_buffer[in] The beginning of the macro buffer being played.
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 * @param macro_end[in]    The element after the last macro buffer element.
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 * @param direction[in]    Either +1 or -1, which way to iterate the buffer.
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 */
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void dynamic_macro_play(keyrecord_t *macro_buffer, keyrecord_t *macro_end, int8_t direction) {
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    dprintf("dynamic macro: slot %d playback\n", DYNAMIC_MACRO_CURRENT_SLOT());
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    uint32_t saved_layer_state = layer_state;
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    clear_keyboard();
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    layer_clear();
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    while (macro_buffer != macro_end) {
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        process_record(macro_buffer);
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        macro_buffer += direction;
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    }
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    clear_keyboard();
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    layer_state = saved_layer_state;
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}
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/**
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 * Record a single key in a dynamic macro.
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 *
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 * @param macro_buffer[in] The start of the used macro buffer.
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 * @param macro_pointer[in,out] The current buffer position.
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 * @param macro2_end[in] The end of the other macro.
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 * @param direction[in]  Either +1 or -1, which way to iterate the buffer.
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 * @param record[in]     The current keypress.
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 */
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void dynamic_macro_record_key(keyrecord_t *macro_buffer, keyrecord_t **macro_pointer, keyrecord_t *macro2_end, int8_t direction, keyrecord_t *record) {
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    /* If we've just started recording, ignore all the key releases. */
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    if (!record->event.pressed && *macro_pointer == macro_buffer) {
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        dprintln("dynamic macro: ignoring a leading key-up event");
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        return;
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    }
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    /* The other end of the other macro is the last buffer element it
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     * is safe to use before overwriting the other macro.
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     */
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    if (*macro_pointer - direction != macro2_end) {
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        **macro_pointer = *record;
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        *macro_pointer += direction;
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    } else {
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        dynamic_macro_led_blink();
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    }
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    dprintf("dynamic macro: slot %d length: %d/%d\n", DYNAMIC_MACRO_CURRENT_SLOT(), DYNAMIC_MACRO_CURRENT_LENGTH(macro_buffer, *macro_pointer), DYNAMIC_MACRO_CURRENT_CAPACITY(macro_buffer, macro2_end));
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}
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/**
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 * End recording of the dynamic macro. Essentially just update the
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 * pointer to the end of the macro.
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 */
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void dynamic_macro_record_end(keyrecord_t *macro_buffer, keyrecord_t *macro_pointer, int8_t direction, keyrecord_t **macro_end) {
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    dynamic_macro_led_blink();
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    /* Do not save the keys being held when stopping the recording,
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     * i.e. the keys used to access the layer DM_RSTP is on.
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     */
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    while (macro_pointer != macro_buffer && (macro_pointer - direction)->event.pressed) {
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        dprintln("dynamic macro: trimming a trailing key-down event");
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        macro_pointer -= direction;
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    }
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    dprintf("dynamic macro: slot %d saved, length: %d\n", DYNAMIC_MACRO_CURRENT_SLOT(), DYNAMIC_MACRO_CURRENT_LENGTH(macro_buffer, macro_pointer));
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    *macro_end = macro_pointer;
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}
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/* Handle the key events related to the dynamic macros. Should be
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 * called from process_record_user() like this:
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 *
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 *   bool process_record_user(uint16_t keycode, keyrecord_t *record) {
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 *       if (!process_record_dynamic_macro(keycode, record)) {
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 *           return false;
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 *       }
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 *       <...THE REST OF THE FUNCTION...>
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 *   }
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 */
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bool process_record_dynamic_macro(uint16_t keycode, keyrecord_t *record) {
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    /* Both macros use the same buffer but read/write on different
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     * ends of it.
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     *
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     * Macro1 is written left-to-right starting from the beginning of
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     * the buffer.
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     *
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     * Macro2 is written right-to-left starting from the end of the
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     * buffer.
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     *
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     * ¯o_buffer   macro_end
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     *  v                   v
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     * +------------------------------------------------------------+
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     * |>>>>>> MACRO1 >>>>>>      <<<<<<<<<<<<< MACRO2 <<<<<<<<<<<<<|
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     * +------------------------------------------------------------+
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     *                           ^                                 ^
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     *                         r_macro_end                  r_macro_buffer
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     *
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     * During the recording when one macro encounters the end of the
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     * other macro, the recording is stopped. Apart from this, there
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     * are no arbitrary limits for the macros' length in relation to
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     * each other: for example one can either have two medium sized
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     * macros or one long macro and one short macro. Or even one empty
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     * and one using the whole buffer.
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     */
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    static keyrecord_t macro_buffer[DYNAMIC_MACRO_SIZE];
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    /* Pointer to the first buffer element after the first macro.
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     * Initially points to the very beginning of the buffer since the
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     * macro is empty. */
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    static keyrecord_t *macro_end = macro_buffer;
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    /* The other end of the macro buffer. Serves as the beginning of
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     * the second macro. */
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    static keyrecord_t *const r_macro_buffer = macro_buffer + DYNAMIC_MACRO_SIZE - 1;
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    /* Like macro_end but for the second macro. */
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    static keyrecord_t *r_macro_end = r_macro_buffer;
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    /* A persistent pointer to the current macro position (iterator)
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     * used during the recording. */
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    static keyrecord_t *macro_pointer = NULL;
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    /* 0   - no macro is being recorded right now
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     * 1,2 - either macro 1 or 2 is being recorded */
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    static uint8_t macro_id = 0;
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    if (macro_id == 0) {
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        /* No macro recording in progress. */
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        if (!record->event.pressed) {
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            switch (keycode) {
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                case QK_DYNAMIC_MACRO_RECORD_START_1:
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                    dynamic_macro_record_start(¯o_pointer, macro_buffer);
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                    macro_id = 1;
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                    return false;
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                case QK_DYNAMIC_MACRO_RECORD_START_2:
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                    dynamic_macro_record_start(¯o_pointer, r_macro_buffer);
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                    macro_id = 2;
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                    return false;
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                case QK_DYNAMIC_MACRO_PLAY_1:
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                    dynamic_macro_play(macro_buffer, macro_end, +1);
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                    return false;
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                case QK_DYNAMIC_MACRO_PLAY_2:
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                    dynamic_macro_play(r_macro_buffer, r_macro_end, -1);
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                    return false;
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            }
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        }
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    } else {
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        /* A macro is being recorded right now. */
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        switch (keycode) {
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            case QK_DYNAMIC_MACRO_RECORD_STOP:
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                /* Stop the macro recording. */
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                if (record->event.pressed) { /* Ignore the initial release
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                                              * just after the recoding
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                                              * starts. */
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                    switch (macro_id) {
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                        case 1:
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                            dynamic_macro_record_end(macro_buffer, macro_pointer, +1, ¯o_end);
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                            break;
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                        case 2:
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                            dynamic_macro_record_end(r_macro_buffer, macro_pointer, -1, &r_macro_end);
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                            break;
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                    }
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                    macro_id = 0;
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                }
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                return false;
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            case QK_DYNAMIC_MACRO_PLAY_1:
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            case QK_DYNAMIC_MACRO_PLAY_2:
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                dprintln("dynamic macro: ignoring macro play key while recording");
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                return false;
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            default:
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                /* Store the key in the macro buffer and process it normally. */
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                switch (macro_id) {
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                    case 1:
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                        dynamic_macro_record_key(macro_buffer, ¯o_pointer, r_macro_end, +1, record);
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                        break;
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                    case 2:
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                        dynamic_macro_record_key(r_macro_buffer, ¯o_pointer, macro_end, -1, record);
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                        break;
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                }
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                return true;
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                break;
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        }
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    }
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    return true;
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}
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#undef DYNAMIC_MACRO_CURRENT_SLOT
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#undef DYNAMIC_MACRO_CURRENT_LENGTH
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#undef DYNAMIC_MACRO_CURRENT_CAPACITY
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