[Vorbis] A faster ogginfo

[John Edwards]

I believe this is what you're looking for:

ov_time_total

declared in "vorbis/vorbisfile.h";

Returns the total time in seconds of the physical bitstream or a 
specified logical bitstream.


double ov_time_total(OggVorbis_File *vf,int i);

Parameters

vf    A pointer to the OggVorbis_File structure--this is used for ALL 
the externally visible libvorbisfile functions.

i    Link to the desired logical bitstream. To retrieve the time total 
for the entire physical bitstream, this parameter should be set to -1.

Return Values

   # OV_EINVAL means that the argument was invalid. In this case, the 
requested bitstream did not exist or the bitstream is nonseekable.
   # n total length in seconds of content if i=-1.
   # n length in seconds of logical bitstream if i=1 to n.

John

Kyle Rose wrote:
>> Programs like gqmpeg shouldn't be using ogginfo if what they're trying
>> to do is extract tags. It's not meant to be used for that purpose.
> 
> 
> Is there a way to get the length (in seconds) from an ogg without 
> reading the entire file?
> 
> Kyle
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