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Update the img convertion tool

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This commit is contained in:
whowe 2024-06-09 10:46:38 +08:00
parent fd680391c4
commit 88ed4a0da2
2 changed files with 129 additions and 95 deletions
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95
firmware/src/tools/conv.c
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@ -1,95 +0,0 @@
/*
* Image compression tool (zero-run-length encoding)
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include "bg_anima_8b.h"
static int col = 0;
static void line_begin()
{
col = 0;
}
static void out_byte(uint8_t byte)
{
if (col == 0) {
printf("\n ");
col == 0;
}
printf(" 0x%02x,", byte);
col = (col + 1) % 16;
}
static int zero_count = 0;
static int out_zero()
{
if (!zero_count) {
return 0;
}
out_byte(0);
out_byte(zero_count);
zero_count = 0;
return 2;
}
static int encode_byte(uint8_t byte, bool end)
{
if (byte == 0) {
zero_count++;
}
int written = 0;
if ((byte != 0) || (zero_count == 255) || end) {
written += out_zero();
}
if (byte != 0) {
out_byte(byte);
written++;
}
return written;
}
static int out_frame(int frame, int frame_size)
{
const uint8_t *frame_data = stars_gif.data + frame * frame_size;
printf("\n // frame %d", frame);
line_begin();
int written = 0;
for (int i = 0; i < frame_size - 1; i++) {
written += encode_byte(frame_data[i], false);
}
written += encode_byte(frame_data[frame_size - 1], true);
return written;
}
int main()
{
int frame_index[stars_gif.frames];
printf("const uint8_t data[] = {");
int sum = 0;
for (int frame = 0; frame < stars_gif.frames; frame++) {
frame_index[frame] = sum;
sum += out_frame(frame, stars_gif.width * stars_gif.height);
}
printf("\n};\n");
printf("const uint32_t index[] = {\n ");
for (int frame = 0; frame < stars_gif.frames; frame++) {
printf(" %d,", frame_index[frame]);
}
printf("\n};\n");
printf("Total: %d\n", sum);
}

129
firmware/tools/conv.c Normal file
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@ -0,0 +1,129 @@
/*
* Image compression tool
* From 8bit grayscale to 4bit grayscale and zero-run-length encoding
* Input: img_data[], img_width, img_height
* Frame count is calculated from img_data size and frame size (img_width * img_height)
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include "../src/bg2.h"
static int col = 0;
static void line_begin()
{
col = 0;
}
static void out_byte(uint8_t byte)
{
if (col == 0) {
printf("\n ");
}
printf(" 0x%02x,", byte);
col = (col + 1) % 16;
}
static int zero_count = 0;
static int out_zero()
{
if (!zero_count) {
return 0;
}
out_byte(0);
out_byte(zero_count);
zero_count = 0;
return 2;
}
static int encode_byte(uint8_t byte)
{
if (byte == 0) {
zero_count++;
}
int written = 0;
if ((byte != 0) || (zero_count == 255)) {
written += out_zero();
}
if (byte != 0) {
out_byte(byte);
written++;
}
return written;
}
static int encode_finish()
{
return out_zero();
}
static inline uint8_t gs8bto4b(const uint8_t bytes[2])
{
return (bytes[0] & 0xf0) | (bytes[1] >> 4);
}
static int out_frame(int frame, int frame_size)
{
const uint8_t *frame_data = img_data + frame * frame_size;
printf("\n // frame %d", frame);
line_begin();
int written = 0;
for (int i = 0; i < frame_size / 2; i++) {
written += encode_byte(gs8bto4b(frame_data + i * 2));
}
written += encode_finish();
return written;
}
const char *headlines =
"#include <stdint.h>\n\n"
"typedef struct {\n"
" uint16_t width;\n"
" uint16_t height;\n"
" uint32_t frames;\n"
" const uint32_t *index;\n"
" const uint8_t *data;\n"
"} img_frames_t;\n\n";
static const int frame_size = img_width * img_height;
static const int frame_count = sizeof(img_data) / frame_size;
int main()
{
int frame_index[frame_count];
printf("%s", headlines);
printf("const uint8_t img_data[] = {");
int sum = 0;
for (int frame = 0; frame < frame_count; frame++) {
frame_index[frame] = sum;
sum += out_frame(frame, frame_size);
}
printf("\n};\n\n");
printf("const uint32_t img_index[] = {\n ");
for (int frame = 0; frame < frame_count; frame++) {
printf(" %d,", frame_index[frame]);
}
printf("\n};\n\n");
printf("const img_frames_t images = {\n");
printf(" .width = %d,\n", img_width);
printf(" .height = %d,\n", img_height);
printf(" .frames = %d,\n", frame_count);
printf(" .index = img_index,\n");
printf(" .data = img_data,\n");
printf("};\n");
fprintf(stderr, "Frame count: %d\n", frame_count);
fprintf(stderr, "Total: %d\n", sum);
}