Re: [mpg123-users] libmpg123 opens non-mp3 files

[Guido J. <Gui...@GM...>]

Dear Martin,

I would like to suggest to use the 'file' command to detect the MIME type of the audio files first.

E.g.

	$ file -bi Renzo\ Arbore\ \&\ Lino\ Banfi\ -\ E\ La\ Candela\ Va\ \(1990\).wav
	audio/x-wav; charset=binary


Guido

On 19.12.23 20:40, Martin Guy wrote:
> Hi!
>     I'm writing a soundfile visualization program that tries to open
> audio files first with libmpg123 then, is it fails, with libsndfile
> then, if that fails, with libav but I'm finding that libmpg123
> "succeeds" in opening some files, wav and ogg, but the returns the file
> length as 0.048 seconds but fails to return any meaningful audio data.
>     I'm doing mpg123_open() and mpg123_getformat() and, if either fail,
> falling back to the other libs. That was enough for one wav which it
> thought it could open but failed to get the format for, but foranother
> two both succeed, giving me garbage.
>     Is this expected behaviour, and is there anything I can do better to
> detect that it's not an mp3 file?
>     In case it's useful, the audio files in question are visible under
> martinwguy.net/test where "Renzo Arbore..." is the one where open()
> succeeds but get_format() fails, but with the other two both succeed.
>
> Thanks!
>
>      M
>
>
>
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