<div dir="auto"><div>Hi Lee</div><div dir="auto"><br></div><div dir="auto">I just copied the aislib to /usr/lib and also tried to use pointer at sixbit, but wasnt better.<br><br><div class="gmail_quote" dir="auto"><div dir="ltr">Em qua, 28 de nov de 2018 14:57, T Lee Davidson <<a href="mailto:t.lee.davidson@gmail.com">t.lee.davidson@gmail.com</a> escreveu:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
On 11/28/18 11:49 AM, T Lee Davidson wrote:<br>
> When I try to run your code, I get:<br>
> Cannot find dynamic library '<a href="http://libais.so.1.9.so" rel="noreferrer noreferrer" target="_blank">libais.so.1.9.so</a>': <a href="http://libais.so.1.9.so" rel="noreferrer noreferrer" target="_blank">libais.so.1.9.so</a>: cannot open shared object file: No such file or directory in<br>
> Main:61.<br>
> <br>
> In addition to your:<br>
> Library "libais.so.1.9"<br>
> <br>
> I tried:<br>
> Library "./libais.so.1.9"<br>
> Library "../libais.so.1.9"<br>
> <br>
> No love. I don't know why Gambas is changing the name I specified.<br>
> <br>
> <br>
> ___<br>
> Lee<br>
<br>
I forgot to mention. In the sixbit structure, there is "char *p; //!< pointer to current character in bits". You have p defined<br>
as a string instead of as a pointer. Maybe it needs to be the way you have it. I couldn't test it.<br>
<br>
<br>
> <br>
> On 11/28/18 7:39 AM, gen braga wrote:<br>
>> Hi there,<br>
>><br>
>> I'm trying to use a method from an external library whose signature is as follow<br>
>><br>
>> int __stdcall assemble_vdm( ais_state *state, char *str )<br>
>><br>
>> ais_state is:<br>
>><br>
>> #define SIXBIT_LEN 255<br>
>><br>
>> typedef struct {<br>
>> unsigned char msgid; //!< Message ID 0-31<br>
>> unsigned int sequence; //!< VDM message sequence number<br>
>> unsigned int total; //!< Total # of parts for the message<br>
>> unsigned int num; //!< Number of the last part stored<br>
>> char channel; //!< AIS Channel character<br>
>> sixbit six_state; //!< sixbit parser state<br>
>> } ais_state;<br>
>><br>
>> six_state is:<br>
>><br>
>> typedef struct {<br>
>> char bits[SIXBIT_LEN]; //!< raw 6-bit ASCII data string<br>
>> char *p; //!< pointer to current character in bits<br>
>> unsigned char remainder; //!< Remainder bits<br>
>> unsigned char remainder_bits; //!< Number of remainder bits<br>
>> } sixbit;<br>
>><br>
>> I declared them all as follow:<br>
>><br>
>> Public Struct sixbit<br>
>> bits[255] As Byte 'raw 6 - bit ASCII data string --> era [SIXBIT_LEN - 1]<br>
>> p As String 'pointer To current character In bits<br>
>> remainder As Byte 'Remainder bits<br>
>> remainder_bits As Byte 'Number Of remainder bits<br>
>> End Struct<br>
>><br>
>> Public Struct AIS_State<br>
>> msgid As Byte 'Message ID 0 - 31<br>
>> sequence As Short 'era DWORD; / / ! < VDM message sequence number<br>
>> total As Short 'era DWORD; / / ! < Total # Of parts For the message<br>
>> num As Short 'era DWORD; / / ! < Number Of the Last part stored<br>
>> channel As Byte ': Char; / / ! < AIS Channel character<br>
>> six_state As SixBit '; / / ! < sixbit parser state<br>
>> End Struct<br>
>><br>
>> Private Extern assemble_vdm(state As AIS_State, str1 As String) As Integer<br>
>><br>
>> Ok....<br>
>> In my Main method I call the assemble_vdm function and the result is as expected, returning an integer between 0 and 5 meaning<br>
>> what's going on, I can confirm it by changing the second parameter's contents. But that method, modifies the first parameter<br>
>> (state) internally, and I should use it afterwards to decide what do to, reading state.msgid<br>
>><br>
>> The fact is, when I read it, its empty and rises segfault.... Does anyone knows how to deal with it?<br>
>><br>
>> The library's sources are at <a href="https://github.com/bcl/aisparser/tree/master/c" rel="noreferrer noreferrer" target="_blank">https://github.com/bcl/aisparser/tree/master/c</a><br>
>><br>
>> Attached are my sources.<br>
>><br>
>> Greetings,<br>
>><br>
>><br>
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>><br>
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</blockquote></div></div></div>