69 lines
1.4 KiB
C
69 lines
1.4 KiB
C
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "quirc.h"
|
|
|
|
int iqpilot_decode_qr_gray(const uint8_t *gray, int width, int height, char *out, int out_len) {
|
|
if (gray == NULL || out == NULL || out_len <= 0 || width <= 0 || height <= 0) {
|
|
return -1;
|
|
}
|
|
|
|
struct quirc *qr = quirc_new();
|
|
if (qr == NULL) {
|
|
return -2;
|
|
}
|
|
|
|
if (quirc_resize(qr, width, height) < 0) {
|
|
quirc_destroy(qr);
|
|
return -3;
|
|
}
|
|
|
|
int qw = 0, qh = 0;
|
|
uint8_t *image = quirc_begin(qr, &qw, &qh);
|
|
if (image == NULL || qw != width || qh != height) {
|
|
quirc_destroy(qr);
|
|
return -4;
|
|
}
|
|
|
|
memcpy(image, gray, (size_t)(width * height));
|
|
quirc_end(qr);
|
|
|
|
int total = quirc_count(qr);
|
|
int decoded_count = 0;
|
|
int write_pos = 0;
|
|
|
|
for (int i = 0; i < total; ++i) {
|
|
struct quirc_code code;
|
|
struct quirc_data data;
|
|
quirc_extract(qr, i, &code);
|
|
|
|
if (quirc_decode(&code, &data) != QUIRC_SUCCESS || data.payload_len == 0) {
|
|
continue;
|
|
}
|
|
|
|
if (write_pos > 0) {
|
|
if (write_pos + 1 >= out_len) {
|
|
break;
|
|
}
|
|
out[write_pos++] = '\n';
|
|
}
|
|
|
|
int copy_len = data.payload_len;
|
|
if (copy_len > out_len - write_pos - 1) {
|
|
copy_len = out_len - write_pos - 1;
|
|
}
|
|
if (copy_len <= 0) {
|
|
break;
|
|
}
|
|
|
|
memcpy(out + write_pos, data.payload, (size_t)copy_len);
|
|
write_pos += copy_len;
|
|
decoded_count++;
|
|
}
|
|
|
|
out[write_pos] = '\0';
|
|
quirc_destroy(qr);
|
|
return decoded_count;
|
|
}
|