[Scilab-users] Unexpected END OF FILE

[Antoine ELIAS]

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>
>
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