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Bugfix + added M17 decoder to the linux CI

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AlexandreRouma
2021-10-02 17:01:23 +02:00
parent 26fa23c8f5
commit b4213ea049
86 changed files with 6601 additions and 20 deletions
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17
core/libcorrect/src/convolutional/metric.c Normal file
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#include "correct/convolutional/metric.h"
// measure the square of the euclidean distance between x and y
// since euclidean dist is sqrt(a^2 + b^2 + ... + n^2), the square is just
// a^2 + b^2 + ... + n^2
distance_t metric_soft_distance_quadratic(unsigned int hard_x, const uint8_t *soft_y, size_t len) {
distance_t dist = 0;
for (unsigned int i = 0; i < len; i++) {
// first, convert hard_x to a soft measurement (0 -> 0, 1 - > 255)
unsigned int soft_x = (hard_x & 1) ? 255 : 0;
hard_x >>= 1;
int d = soft_y[i] - soft_x;
dist += d*d;
}
return dist >> 3;
}