/* Copyright 2016 Jack Humbert * * 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/>. */ /* Author: Wojciech Siewierski < wojciech dot siewierski at onet dot pl > */ #ifndef DYNAMIC_MACROS_H #define DYNAMIC_MACROS_H #include "action_layer.h" #ifndef DYNAMIC_MACRO_SIZE /* May be overridden with a custom value. Be aware that the effective * macro length is half of this value: each keypress is recorded twice * because of the down-event and up-event. This is not a bug, it's the * intended behavior. * * Usually it should be fine to set the macro size to at least 256 but * there have been reports of it being too much in some users' cases, * so 128 is considered a safe default. */ #define DYNAMIC_MACRO_SIZE 128 #endif /* DYNAMIC_MACRO_RANGE must be set as the last element of user's * "planck_keycodes" enum prior to including this header. This allows * us to 'extend' it. */ enum dynamic_macro_keycodes { DYN_REC_START1 = DYNAMIC_MACRO_RANGE, DYN_REC_START2, DYN_REC_STOP, DYN_MACRO_PLAY1, DYN_MACRO_PLAY2, }; /* Blink the LEDs to notify the user about some event. */ void dynamic_macro_led_blink(void) { #ifdef BACKLIGHT_ENABLE backlight_toggle(); _delay_ms(100); backlight_toggle(); #endif } /* Convenience macros used for retrieving the debug info. All of them * need a `direction` variable accessible at the call site. */ #define DYNAMIC_MACRO_CURRENT_SLOT() (direction > 0 ? 1 : 2) #define DYNAMIC_MACRO_CURRENT_LENGTH(BEGIN, POINTER) \ ((int)(direction * ((POINTER) - (BEGIN)))) #define DYNAMIC_MACRO_CURRENT_CAPACITY(BEGIN, END2) \ ((int)(direction * ((END2) - (BEGIN)) + 1)) /** * Start recording of the dynamic macro. * * @param[out] macro_pointer The new macro buffer iterator. * @param[in] macro_buffer The macro buffer used to initialize macro_pointer. */ void dynamic_macro_record_start( keyrecord_t **macro_pointer, keyrecord_t *macro_buffer) { dprintln("dynamic macro recording: started"); dynamic_macro_led_blink(); clear_keyboard(); layer_clear(); *macro_pointer = macro_buffer; } /** * Play the dynamic macro. * * @param macro_buffer[in] The beginning of the macro buffer being played. * @param macro_end[in] The element after the last macro buffer element. * @param direction[in] Either +1 or -1, which way to iterate the buffer. */ void dynamic_macro_play( keyrecord_t *macro_buffer, keyrecord_t *macro_end, int8_t direction) { dprintf("dynamic macro: slot %d playback\n", DYNAMIC_MACRO_CURRENT_SLOT()); uint32_t saved_layer_state = layer_state; clear_keyboard(); layer_clear(); while (macro_buffer != macro_end) { process_record(macro_buffer); macro_buffer += direction; } clear_keyboard(); layer_state = saved_layer_state; } /** * Record a single key in a dynamic macro. * * @param macro_buffer[in] The start of the used macro buffer. * @param macro_pointer[in,out] The current buffer position. * @param macro2_end[in] The end of the other macro. * @param direction[in] Either +1 or -1, which way to iterate the buffer. * @param record[in] The current keypress. */ void dynamic_macro_record_key( keyrecord_t *macro_buffer, keyrecord_t **macro_pointer, keyrecord_t *macro2_end, int8_t direction, keyrecord_t *record) { /* If we've just started recording, ignore all the key releases. */ if (!record->event.pressed && *macro_pointer == macro_buffer) { dprintln("dynamic macro: ignoring a leading key-up event"); return; } /* The other end of the other macro is the last buffer element it * is safe to use before overwriting the other macro. */ if (*macro_pointer - direction != macro2_end) { **macro_pointer = *record; *macro_pointer += direction; } else { dynamic_macro_led_blink(); } 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)); } /** * End recording of the dynamic macro. Essentially just update the * pointer to the end of the macro. */ void dynamic_macro_record_end( keyrecord_t *macro_buffer, keyrecord_t *macro_pointer, int8_t direction, keyrecord_t **macro_end) { dynamic_macro_led_blink(); /* Do not save the keys being held when stopping the recording, * i.e. the keys used to access the layer DYN_REC_STOP is on. */ while (macro_pointer != macro_buffer && (macro_pointer - direction)->event.pressed) { dprintln("dynamic macro: trimming a trailing key-down event"); macro_pointer -= direction; } dprintf( "dynamic macro: slot %d saved, length: %d\n", DYNAMIC_MACRO_CURRENT_SLOT(), DYNAMIC_MACRO_CURRENT_LENGTH(macro_buffer, macro_pointer)); *macro_end = macro_pointer; } /* Handle the key events related to the dynamic macros. Should be * called from process_record_user() like this: * * bool process_record_user(uint16_t keycode, keyrecord_t *record) { * if (!process_record_dynamic_macro(keycode, record)) { * return false; * } * <...THE REST OF THE FUNCTION...> * } */ bool process_record_dynamic_macro(uint16_t keycode, keyrecord_t *record) { /* Both macros use the same buffer but read/write on different * ends of it. * * Macro1 is written left-to-right starting from the beginning of * the buffer. * * Macro2 is written right-to-left starting from the end of the * buffer. * * ¯o_buffer macro_end * v v * +------------------------------------------------------------+ * |>>>>>> MACRO1 >>>>>> <<<<<<<<<<<<< MACRO2 <<<<<<<<<<<<<| * +------------------------------------------------------------+ * ^ ^ * r_macro_end r_macro_buffer * * During the recording when one macro encounters the end of the * other macro, the recording is stopped. Apart from this, there * are no arbitrary limits for the macros' length in relation to * each other: for example one can either have two medium sized * macros or one long macro and one short macro. Or even one empty * and one using the whole buffer. */ static keyrecord_t macro_buffer[DYNAMIC_MACRO_SIZE]; /* Pointer to the first buffer element after the first macro. * Initially points to the very beginning of the buffer since the * macro is empty. */ static keyrecord_t *macro_end = macro_buffer; /* The other end of the macro buffer. Serves as the beginning of * the second macro. */ static keyrecord_t *const r_macro_buffer = macro_buffer + DYNAMIC_MACRO_SIZE - 1; /* Like macro_end but for the second macro. */ static keyrecord_t *r_macro_end = r_macro_buffer; /* A persistent pointer to the current macro position (iterator) * used during the recording. */ static keyrecord_t *macro_pointer = NULL; /* 0 - no macro is being recorded right now * 1,2 - either macro 1 or 2 is being recorded */ static uint8_t macro_id = 0; if (macro_id == 0) { /* No macro recording in progress. */ if (!record->event.pressed) { switch (keycode) { case DYN_REC_START1: dynamic_macro_record_start(¯o_pointer, macro_buffer); macro_id = 1; return false; case DYN_REC_START2: dynamic_macro_record_start(¯o_pointer, r_macro_buffer); macro_id = 2; return false; case DYN_MACRO_PLAY1: dynamic_macro_play(macro_buffer, macro_end, +1); return false; case DYN_MACRO_PLAY2: dynamic_macro_play(r_macro_buffer, r_macro_end, -1); return false; } } } else { /* A macro is being recorded right now. */ switch (keycode) { case DYN_REC_STOP: /* Stop the macro recording. */ if (record->event.pressed) { /* Ignore the initial release * just after the recoding * starts. */ switch (macro_id) { case 1: dynamic_macro_record_end(macro_buffer, macro_pointer, +1, ¯o_end); break; case 2: dynamic_macro_record_end(r_macro_buffer, macro_pointer, -1, &r_macro_end); break; } macro_id = 0; } return false; default: /* Store the key in the macro buffer and process it normally. */ switch (macro_id) { case 1: dynamic_macro_record_key(macro_buffer, ¯o_pointer, r_macro_end, +1, record); break; case 2: dynamic_macro_record_key(r_macro_buffer, ¯o_pointer, macro_end, -1, record); break; } return true; break; } } return true; } #undef DYNAMIC_MACRO_CURRENT_SLOT #undef DYNAMIC_MACRO_CURRENT_LENGTH #undef DYNAMIC_MACRO_CURRENT_CAPACITY #endif