Function simplicity_read_buffer8

src/simplicity/frame.c:104–116

 *               0 <= n < 16
 */
void simplicity_read_buffer8(unsigned char* buf, size_t* len, frameItem* src, int n) {
  simplicity_debug_assert(0 <= n && n < 16);
  *len = 0;

  for (size_t i = (size_t)1 << n; 0 < i; i /= 2) {
    if (readBit(src)) {
      read8s(buf, i, src);
      buf += i; *len += i;
    } else {
      forwardBits(src, i*8);
    }
  }
}

/* Write 'len' bytes to a Simplicity buffer of type (TWO^8)^<2^(n+1) from 'buf'.
 * Advance the 'dst' frame to the end of the buffer type.