#include "avcodec.h"
#include "internal.h"
+#define MIN_ELEMENT ' '
+#define MAX_ELEMENT 0xfe
+#define NB_ELEMENTS (MAX_ELEMENT - MIN_ELEMENT + 1)
+
typedef struct XPMContext {
uint32_t *pixels;
int pixels_size;
int n = 0, m = 1, i;
for (i = 0; i < cpp; i++) {
- if (*p < ' ' || *p > 0xfe)
+ if (*p < MIN_ELEMENT || *p > MAX_ELEMENT)
return AVERROR_INVALIDDATA;
- n += (*p++ - ' ') * m;
- m *= 223;
+ n += (*p++ - MIN_ELEMENT) * m;
+ m *= NB_ELEMENTS;
}
return n;
}
size = 1;
for (i = 0; i < cpp; i++)
- size *= 223;
+ size *= NB_ELEMENTS;
if (ncolors <= 0 || ncolors > size) {
av_log(avctx, AV_LOG_ERROR, "invalid number of colors: %d\n", ncolors);