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Separate animation module

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This commit is contained in:
whowe 2024-06-09 15:34:25 +08:00
parent f40c956af4
commit 9bb26dd50d
2 changed files with 100 additions and 0 deletions
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81
firmware/src/anima.c Normal file
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#include <stdint.h>
#include "st7789.h"
#include "anima.h"
const uint16_t white_pallete[16] = {
st7789_gray(0x00),
st7789_gray(0x10),
st7789_gray(0x20),
st7789_gray(0x30),
st7789_gray(0x40),
st7789_gray(0x50),
st7789_gray(0x60),
st7789_gray(0x70),
st7789_gray(0x80),
st7789_gray(0x90),
st7789_gray(0xa0),
st7789_gray(0xb0),
st7789_gray(0xc0),
st7789_gray(0xd0),
st7789_gray(0xe0),
st7789_gray(0xf0),
};
static const uint8_t *compressed_data;
static int zero_count = 0;
static inline void decode_start(const uint8_t *data)
{
compressed_data = data;
zero_count = 0;
}
static inline uint8_t decode_byte()
{
if (zero_count) {
zero_count--;
return 0;
}
uint8_t value = *compressed_data;
compressed_data++;
if (value == 0) {
zero_count = *compressed_data - 1;
compressed_data++;
return 0;
}
return value;
}
void anima_draw(const anima_t *ani, int x, int y, int frame, const uint16_t pallete[16])
{
uint16_t width = ani->width;
uint16_t height = ani->height;
frame = frame % ani->frames;
decode_start(ani->data + ani->index[frame]);
for (int j = 0; j < height; j++) {
for (int i = 0; i < width / 2; i++) {
uint8_t value = decode_byte();
st7789_pixel_raw(x + i * 2, y + j, pallete[value >> 4]);
st7789_pixel_raw(x + i * 2 + 1, y + j, pallete[value & 0x0f]);
}
}
}
void anima_mix(const anima_t *ani, int x, int y, int frame, uint16_t color)
{
uint16_t width = ani->width;
uint16_t height = ani->height;
frame = frame % ani->frames;
decode_start(ani->data + ani->index[frame]);
for (int j = 0; j < height; j++) {
for (int i = 0; i < width / 2; i++) {
uint8_t value = decode_byte();
st7789_pixel(x + i * 2, y + j, color, value >> 4 << 4);
st7789_pixel(x + i * 2 + 1, y + j, color, (value & 0x0f) << 4);
}
}
}

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firmware/src/anima.h Normal file
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#ifndef ANIMA_H
#define ANIMA_H
#include <stdint.h>
typedef struct {
uint16_t width;
uint16_t height;
uint32_t frames;
const uint32_t *index;
const uint8_t *data;
} anima_t;
extern const uint16_t white_pallete[16];
void anima_draw(const anima_t *ani, int x, int y, int frame, const uint16_t pallete[16]);
void anima_mix(const anima_t *ani, int x, int y, int frame, uint16_t color);
#endif