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); }