int outPos = 0, previous = 0;
for (int outPos = 0; outPos < n; outPos++) {
    for (int shift = 0; ; shift += 7) {
        int temp = compressed[inPos++];
        previous += ((temp & 127) << shift);
        if (temp < 128) break;
    }
    uncompressed[outPos] = previous;
}