static uint32_t parse_peak(const uint8_t *peak)
{
int64_t val = 0;
int64_t scale = 1;
if (!peak)
return 0;
peak += strspn(peak, " \t");
if (peak[0] == '1' && peak[1] == '.')
return UINT32_MAX;
else if (!(peak[0] == '0' && peak[1] == '.'))
return 0;
peak += 2;
while (av_isdigit(*peak)) {
int digit = *peak - '0';
if (scale > INT64_MAX / 10)
break;
val = 10 * val + digit;
scale *= 10;
peak++;
}
return av_rescale(val, UINT32_MAX, scale);
}
static int32_t parse_gain(const char *gain)
{
char *fraction;
int scale = 10000;
int32_t mb = 0;
int db;
if (!gain)
return INT32_MIN;
gain += strspn(gain, " \t");
db = strtol(gain, &fraction, 0);
if (*fraction++ == '.') {
while (av_isdigit(*fraction) && scale) {
mb += scale * (*fraction - '0');
scale /= 10;
fraction++;
}
}
if (abs(db) > (INT32_MAX - mb) / 100000)
return INT32_MIN;
return db * 100000 + FFSIGN(db) * mb;
}
static int32_t parse_value(const char *value, int32_t min)
{
char *fraction;
int scale = 10000;
int32_t mb = 0;
int sign = 1;
int db;
if (!value)
return min;
value += strspn(value, " \t");
if (*value == '-')
sign = -1;
db = strtol(value, &fraction, 0);
if (*fraction++ == '.') {
while (av_isdigit(*fraction) && scale) {
mb += scale * (*fraction - '0');
scale /= 10;
fraction++;
}
}
if (abs(db) > (INT32_MAX - mb) / 100000)
return min;
return db * 100000 + sign * mb;
}
int av_isxdigit(int c)
{
c = av_tolower(c);
return av_isdigit(c) || (c >= 'a' && c <= 'f');
}
