qmk/features/oled_bongocat.c

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// Copyright 2021 @filterpaper
// SPDX-License-Identifier: GPL-2.0+
/* Graphical bongocat animation
It has left and right aligned cats optimized for both OLEDs.
This code uses run-length encoded frames that saves space by
encoding frames into repeated or unique byte count.
RLE code is modified from @vectorstorm's Bongocat:
(https://github.com/vectorstorm/qmk_firmware/tree/bongo_rle/keyboards/crkbd/keymaps/vectorstorm)
Inspired by @j-inc's bongocat animation code
(keyboards/kyria/keymaps/j-inc)
Cat images courtesy of @plandevida
Usage guide
1 Place this file next to keymap.c or in userspace.
2 Add the following lines into rules.mk:
OLED_ENABLE = yes
SRC += oled-bongocat.c
3 The 'oled_task_user()' calls 'render_mod_status()' from "oled-icons.c"
for secondary OLED. Review that file for usage guide or replace
'render_mod_status()' with your own function.
*/
#include QMK_KEYBOARD_H
#define IDLE_FRAMES 5
#define TAP_FRAMES 2
#define FRAME_DURATION 200 // milliseconds
#define TAP_INTERVAL FRAME_DURATION*2
#define PAWS_INTERVAL FRAME_DURATION*8
// Run-length encoded animation frames
// Right frames
static unsigned char const idle0[] PROGMEM = {144,
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0x03,0x02,0x02,0x06,0x01,0x02,0x02,0x02,0x04,0x05,0x08,0x01,0x07,0x3d,0x00};
static unsigned char const idle1[] PROGMEM = {147,
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0x3d,0x00};
static unsigned char const idle2[] PROGMEM = {154,
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0x02,0x02,0x04,0x05,0x08,0x01,0x07,0x3d,0x00};
static unsigned char const idle3[] PROGMEM = {140,
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0x01,0x02,0x02,0x02,0x04,0x05,0x08,0x01,0x07,0x3d,0x00};
static unsigned char const *idle[IDLE_FRAMES] = {
idle0, idle0, idle1, idle2, idle3 };
static unsigned char const paws[] PROGMEM = {150,
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0x02,0x06,0x01,0x47,0x00};
static unsigned char const tap0[] PROGMEM = {180,
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0x03,0x20,0x00};
static unsigned char const tap1[] PROGMEM = {153,
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0x08,0x02,0x88,0x82,0x87,0x80,0x3c,0x00};
static unsigned char const *tap[TAP_FRAMES] = {
tap0, tap1 };
// Left frames
static unsigned char const left_idle0[] PROGMEM = {142,
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0x04,0x05,0x08,0x05,0x10,0x05,0x20,0x05,0x40,0x05,0x80,0x11,0x00};
static unsigned char const left_idle1[] PROGMEM = {145,
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0x12,0x22,0x21,0xa0,0x40,0x00,0x01,0x0d,0x03,0x0c,0x07,0x00,0x84,0x03,0x0c,0x70,
0x80,0x6d,0x00,0x01,0x07,0x05,0x08,0x02,0x04,0x02,0x02,0x06,0x01,0x02,0x02,0x82,
0x03,0x02,0x05,0x04,0x05,0x08,0x05,0x10,0x05,0x20,0x05,0x40,0x05,0x80,0x11,0x00};
static unsigned char const left_idle2[] PROGMEM = {152,
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0x04,0x02,0x05,0x04,0x05,0x08,0x04,0x10,0x04,0x20,0x04,0x40,0x04,0x80,0x03,0x00,
0x87,0x80,0x40,0x20,0x10,0x08,0x04,0xc2,0x02,0xc1,0x82,0xc0,0x00,0x02,0x30,0x82,
0x00,0x80,0x09,0x00,0x02,0x80,0x04,0x00,0x01,0x01,0x02,0x02,0x02,0x01,0x02,0x00,
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0x04,0x08,0x01,0x09,0x03,0x11,0x88,0x12,0x22,0x21,0xa0,0x40,0x00,0x01,0x0d,0x03,
0x0c,0x07,0x00,0x84,0x03,0x0c,0x70,0x80,0x6d,0x00,0x01,0x07,0x05,0x08,0x02,0x04,
0x02,0x02,0x06,0x01,0x02,0x02,0x82,0x03,0x02,0x05,0x04,0x05,0x08,0x05,0x10,0x05,
0x20,0x05,0x40,0x05,0x80,0x11,0x00};
static unsigned char const left_idle3[] PROGMEM = {138,
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0x02,0x82,0x82,0x81,0x00,0x02,0x60,0x10,0x00,0x82,0x01,0x02,0x02,0x04,0x02,0x02,
0x02,0x01,0x82,0xc2,0x3c,0x56,0x00,0x02,0x01,0x82,0x0f,0x11,0x05,0x10,0x02,0x09,
0x02,0x05,0x04,0x08,0x01,0x0b,0x03,0x12,0x88,0x14,0x24,0x22,0xa0,0x40,0x00,0x03,
0x1b,0x03,0x18,0x07,0x00,0x84,0x06,0x19,0x70,0x80,0x6d,0x00,0x01,0x07,0x05,0x08,
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0x10,0x05,0x20,0x05,0x40,0x05,0x80,0x11,0x00};
static unsigned char const *left_idle[IDLE_FRAMES] = {
left_idle0, left_idle0, left_idle1, left_idle2, left_idle3 };
static unsigned char const left_paws[] PROGMEM = {148,
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0x09,0x03,0x11,0x84,0x12,0x22,0x21,0x20,0x02,0x40,0x02,0x41,0x88,0x7c,0xc3,0x84,
0x99,0x98,0x05,0x06,0x18,0x02,0x00,0x84,0x03,0x0c,0x70,0x80,0x77,0x00,0x06,0x01,
0x02,0x02,0x82,0x03,0x02,0x05,0x04,0x05,0x08,0x05,0x10,0x05,0x20,0x05,0x40,0x05,
0x80,0x11,0x00};
static unsigned char const left_tap0[] PROGMEM = {178,
0x03,0x80,0x1c,0x00,0x02,0x80,0x05,0x00,0x04,0xf8,0x07,0x00,0x85,0x80,0x40,0x30,
0x0c,0x02,0x02,0x01,0x83,0x02,0x04,0x08,0x04,0x10,0x04,0x20,0x02,0x40,0x01,0x80,
0x05,0x00,0x02,0x80,0x36,0x00,0x04,0x01,0x04,0x02,0x05,0x04,0x05,0x08,0x04,0x10,
0x04,0x20,0x82,0x4c,0x4f,0x02,0x5f,0x8e,0x9f,0xbe,0xbc,0xb8,0x00,0x01,0x07,0x87,
0x43,0x20,0x10,0x08,0x04,0x02,0x02,0x01,0x02,0x00,0x02,0x30,0x82,0x00,0x80,0x09,
0x00,0x02,0x80,0x02,0x00,0x02,0x80,0x01,0x81,0x02,0x02,0x02,0x01,0x02,0x00,0x82,
0xe1,0x1e,0x4e,0x00,0x82,0x0c,0x3c,0x05,0xfc,0x85,0x7c,0x3d,0x01,0x0f,0x11,0x05,
0x10,0x02,0x08,0x02,0x04,0x04,0x08,0x01,0x09,0x03,0x11,0x84,0x12,0x22,0x21,0x20,
0x02,0x40,0x02,0x41,0x88,0x7c,0x43,0x84,0x99,0x98,0x05,0x06,0x18,0x02,0x00,0x84,
0x03,0x0c,0x70,0x80,0x50,0x00,0x02,0x03,0x01,0x01,0x24,0x00,0x06,0x01,0x02,0x02,
0x82,0x03,0x02,0x05,0x04,0x05,0x08,0x05,0x10,0x05,0x20,0x05,0x40,0x05,0x80,0x11,
0x00};
static unsigned char const left_tap1[] PROGMEM = {151,
0x03,0x80,0x2e,0x00,0x85,0x80,0x40,0x30,0x0c,0x02,0x02,0x01,0x83,0x02,0x04,0x08,
0x04,0x10,0x04,0x20,0x02,0x40,0x01,0x80,0x05,0x00,0x02,0x80,0x36,0x00,0x04,0x01,
0x04,0x02,0x05,0x04,0x05,0x08,0x04,0x10,0x04,0x20,0x04,0x40,0x04,0x80,0x02,0x00,
0x8a,0x7c,0x8a,0x01,0x35,0x31,0x09,0x06,0x1a,0xe1,0x01,0x02,0x00,0x02,0x30,0x82,
0x00,0x80,0x09,0x00,0x02,0x80,0x04,0x00,0x01,0x01,0x02,0x02,0x02,0x01,0x02,0x00,
0x82,0xe1,0x1e,0x56,0x00,0x04,0x01,0x03,0x02,0x06,0x04,0x04,0x08,0x01,0x09,0x03,
0x11,0x86,0x12,0x22,0x21,0xa0,0x40,0x00,0x02,0x01,0x0a,0x00,0x84,0x03,0x0c,0x70,
0x80,0x6c,0x00,0x82,0x80,0x87,0x02,0x88,0x03,0x08,0x02,0x04,0x02,0x02,0x82,0x31,
0x39,0x04,0x79,0x02,0x7a,0x82,0x03,0x02,0x05,0x04,0x05,0x08,0x05,0x10,0x05,0x20,
0x05,0x40,0x05,0x80,0x11,0x00};
static unsigned char const *left_tap[TAP_FRAMES] = {
left_tap0, left_tap1 };
// RLE decoding loop that reads count from frame index
// If count >= 0x80, next (count - 128) bytes are unique
// If count < 0x80, next byte is repeated by count
static void decode_frame(unsigned char const *frame) {
uint16_t cursor = 0;
uint8_t i = 1, size = pgm_read_byte(frame);
oled_set_cursor(0,0);
while (i < size) {
uint8_t count = pgm_read_byte(frame + i); i++;
if (count & 0x80) {
// Next count-128 bytes are unique
count &= ~(0x80);
for (uint8_t uniqs = 0; uniqs < count; ++uniqs) {
uint8_t byte = pgm_read_byte(frame + i); i++;
oled_write_raw_byte(byte, cursor++);
}
} else {
// Next byte is repeated by count
uint8_t byte = pgm_read_byte(frame + i); i++;
for (uint8_t reps = 0; reps < count; ++reps) {
oled_write_raw_byte(byte, cursor++);
}
}
}
}
static void animate_cat(uint32_t interval) {
static uint8_t tap_index = 0, idle_index = 0;
if (interval < TAP_INTERVAL) {
tap_index = (tap_index + 1) & 1;
decode_frame(is_keyboard_left() ? left_tap[tap_index] : tap[tap_index]);
} else if (interval < PAWS_INTERVAL) {
decode_frame(is_keyboard_left() ? left_paws : paws);
} else {
idle_index = idle_index < IDLE_FRAMES - 1 ? idle_index + 1 : 0;
decode_frame(is_keyboard_left() ? left_idle[idle_index] : idle[idle_index]);
}
}
void render_bongocat(void) {
static uint16_t frame_timer = 0;
uint32_t const input_timer = last_matrix_activity_time();
if (timer_elapsed32(input_timer) > OLED_TIMEOUT) {
oled_off();
} else if (timer_elapsed(frame_timer) > FRAME_DURATION) {
frame_timer = timer_read();
animate_cat(timer_elapsed32(input_timer));
}
}