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Refactored some c99 features

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Fixes #68
This commit is contained in:
Alexandre Perrin 2020-02-27 20:40:23 +01:00
parent 2e8c4ce7bc
commit a0b41121e4
1 changed files with 6 additions and 6 deletions
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12
lib/identify.c
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@ -180,9 +180,8 @@ static uint8_t otsu(const struct quirc *q)
int numPixels = q->w * q->h; int numPixels = q->w * q->h;
// Calculate histogram // Calculate histogram
const int HISTOGRAM_SIZE = 256; unsigned int histogram[UINT8_MAX + 1];
unsigned int histogram[HISTOGRAM_SIZE]; (void)memset(histogram, 0, sizeof(histogram));
memset(histogram, 0, (HISTOGRAM_SIZE) * sizeof(unsigned int));
uint8_t* ptr = q->image; uint8_t* ptr = q->image;
int length = numPixels; int length = numPixels;
while (length--) { while (length--) {
@ -191,8 +190,9 @@ static uint8_t otsu(const struct quirc *q)
} }
// Calculate weighted sum of histogram values // Calculate weighted sum of histogram values
int sum = 0; unsigned int sum = 0;
for (int i = 0; i < HISTOGRAM_SIZE; ++i) { unsigned int i = 0;
for (i = 0; i <= UINT8_MAX; ++i) {
sum += i * histogram[i]; sum += i * histogram[i];
} }
@ -201,7 +201,7 @@ static uint8_t otsu(const struct quirc *q)
int q1 = 0; int q1 = 0;
double max = 0; double max = 0;
uint8_t threshold = 0; uint8_t threshold = 0;
for (int i = 0; i < HISTOGRAM_SIZE; ++i) { for (i = 0; i <= UINT8_MAX; ++i) {
// Weighted background // Weighted background
q1 += histogram[i]; q1 += histogram[i];
if (q1 == 0) if (q1 == 0)