Exemplos de uleb128_decode_small em C++ (Cpp)

Exemplo n.º 1

Arquivo: xbzrle.c Projeto: 8tab/qemu

int xbzrle_decode_buffer(uint8_t *src, int slen, uint8_t *dst, int dlen)
{
    int i = 0, d = 0;
    int ret;
    uint32_t count = 0;

    while (i < slen) {

        /* zrun */
        if ((slen - i) < 2) {
            return -1;
        }

        ret = uleb128_decode_small(src + i, &count);
        if (ret < 0 || (i && !count)) {
            return -1;
        }
        i += ret;
        d += count;

        /* overflow */
        if (d > dlen) {
            return -1;
        }

        /* nzrun */
        if ((slen - i) < 2) {
            return -1;
        }

        ret = uleb128_decode_small(src + i, &count);
        if (ret < 0 || !count) {
            return -1;
        }
        i += ret;

        /* overflow */
        if (d + count > dlen || i + count > slen) {
            return -1;
        }

        memcpy(dst + d, src + i, count);
        d += count;
        i += count;
    }

    return d;
}

Exemplo n.º 2

Arquivo: test-xbzrle.c Projeto: 32bitmicro/riscv-qemu

static void test_uleb(void)
{
    uint32_t i, val;
    uint8_t buf[2];
    int encode_ret, decode_ret;

    for (i = 0; i <= 0x3fff; i++) {
        encode_ret = uleb128_encode_small(&buf[0], i);
        decode_ret = uleb128_decode_small(&buf[0], &val);
        g_assert(encode_ret == decode_ret);
        g_assert(i == val);
    }

    /* decode invalid value */
    buf[0] = 0x80;
    buf[1] = 0x80;

    decode_ret = uleb128_decode_small(&buf[0], &val);
    g_assert(decode_ret == -1);
    g_assert(val == 0);
}