Get duration of MP3 file in C ... libid3tag?

[MicahCarrick]

I'm using libid3tag in my application. I have everything I need except I'm not sure how to calculate the length... (or if I can get it using libid3tag). Can anybody point me in the right direction?

[Bichromat]

Can libid3tag do anything else than reading id3 tags ? Because I don't think the duration of a file is encoded in these tags. Maybe libmpeg3 could do what you want ?

[sq377]

read /usr/include/taglib/tag_c.h

/*!
* Returns the lenght of the file in seconds.
*/
int taglib_audioproperties_length(const TagLib_AudioProperties *audioProperties);

/*!
* Returns the bitrate of the file in kb/s.
*/
int taglib_audioproperties_bitrate(const TagLib_AudioProperties *audioProperties);

/*!
* Returns the sample rate of the file in Hz.
*/
int taglib_audioproperties_samplerate(const TagLib_AudioProperties *audioProperties);

/*!
* Returns the number of channels in the audio stream.
*/
int taglib_audioproperties_channels(const TagLib_AudioProperties *audioProperties);


Get the TagLib_AudioProperties context like this:
const TagLib_AudioProperties *taglib_file_audioproperties(const TagLib_File *file);


Though I've found this library to be very lacking in c support (it's mainly c++). Check out libid3.