Re: Decoding small blocks of data

This one time, at band camp, [email protected] wrote:
>I am trying to decode a mp3-file 100kB at a time.

The core of the problem is that your mpeg frames may not be an integer
divisor of 100kB.

>I'm not familiar with the mp3-format structure but i guess that the data in the file should be sent to the decoder in complete blocks.
>I was hoping that the decoder would save incomplete data from the end of the previous buffer sent and join them with the next buffer sent. But it isn't ?

Nah, you should do that yourself.

>So if I want to decode small blocks of the file.
>If I look through the file and only send complete blocks of data to the decoder.

It's been a while since I wrote any code against libmad, but I'm pretty
sure you get back a count of how much data was eaten.

So, feed the decoder data until you've done 100kB and then finish the
frame.  You get back a count of how much data was eaten and how much is
left in the buffer, and you can then feed that remaining data to the
decoder the next time around.

-- 
[email protected]                           http://spacepants.org/jaq.gpg