#91 How does it work to ​find the tag in a mp​3-file​

[Christian]

Hello,

I tried to understand how the library detects the id3-tag in a mp3-file. If it's at the beginning of the file it shouldn't be a problem cause you see the header at the beginning, but how does it handle it, if its at the end of the file?

I thought you need to get to the beginning of the id3-tag to see the header. Do you get to the end of the file and go through the tag til you get to the beginning of the header or is there a faster way which is used at this library?

I wanted to find it out cause I use it at my project to build a software for looking through some mp3-files to collect metadata about these. I want to know whats the performance under a panda board (mobile system) and want to look for the bottlenecks here and it seems like this is the one which needs much time.

Thanks

Christian Trost