[Scilab-users] Unexpected END OF FILE

[Federico Miyara]

Antoine,

Thank you VERY MUCH!

That works. Is there a fundamental reason why not specifying binary 
fails somewhere? Some sort of EOF code that may present itself randomly 
according to file content?

Regards,

Federico


On 30/01/2019 20:07, Antoine ELIAS wrote:
> Hello Frederico,
>
> On Windows, you should open your file in binary mode, with "rb".
> --> fd = mopen("440Hz_0.2s.wav", "rb");
> --> h = mgeti(1000, "uc", fd);
> --> size(h)
>  ans  =
>    1.   1000.
>
> --> dec2hex(h(1:5))
>  ans  =
> !52  49  46  46  84  !
>
> Regards,
> Antoine
> Le 30/01/2019 à 23:02, Federico Miyara a écrit :
>>
>> Dear all,
>>
>> I'm trying to read data from a file (in this case a wave file) with 
>> the following code (Scilab 6.0.1)
>> fid  =  mopen('g:\Mis documentos\Ondas\440Hz_0.2s.wav',  'r')
>> mseek(0,  fid)
>> h  =  mgeti(1000,'uc',fid)
>> I should get a vector with 1000 unsigned 1 byte integer components 
>> but I end with only 164 entries. Viewing the file with an hex viewer, 
>> the last correctly read data are
>>
>> 34 3E 34 3E
>>
>> (decimal 52 62 52 62)
>>
>> Then the following data and further data
>>
>> 1A 3D 1A 3DÂ  ...
>>
>> are not read at all. No warning like having reached EOF. By the way, 
>> the repeated pairs are because it is a stereo file with identical 
>> left and right channels.
>>
>> The same happens changing the way the file data are to be decoded. 
>> Seems to get stuck when 1A or 1A 3D appears.
>>
>> Any idea of what may be going on and how to solve it?
>>
>> Federico Miyara
>>
>>
>> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>>
>> _______________________________________________
>> users mailing list
>> users at lists.scilab.org
>> http://lists.scilab.org/mailman/listinfo/users
>
>
>
> _______________________________________________
> users mailing list
> users at lists.scilab.org
> http://lists.scilab.org/mailman/listinfo/users



---
El software de antivirus Avast ha analizado este correo electrónico en busca de virus.
https://www.avast.com/antivirus
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.scilab.org/pipermail/users/attachments/20190130/c031858e/attachment.htm>