Function avpriv_find_start_code

libavcodec/utils.c:935–966

#endif

const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
                                      const uint8_t *end,
                                      uint32_t *restrict state)
{
    int i;

    av_assert0(p <= end);
    if (p >= end)
        return end;

    for (i = 0; i < 3; i++) {
        uint32_t tmp = *state << 8;
        *state = tmp + *(p++);
        if (tmp == 0x100 || p == end)
            return p;
    }

    while (p < end) {
        if      (p[-1] > 1      ) p += 3;
        else if (p[-2]          ) p += 2;
        else if (p[-3]|(p[-1]-1)) p++;
        else {
            p++;
            break;
        }
    }

    p = FFMIN(p, end) - 4;
    *state = AV_RB32(p);

    return p + 4;
}

AVCPBProperties *av_cpb_properties_alloc(size_t *size)
{