I learned how to encode wav into an mp3 using lame_encode_buffer_interleaved
from this question: Is there any LAME c++ wraper\simplifier (working on Linux Mac and Win from pure code)?
Now I want to decode the mp3 back into wav. I know there's lame_decode
but I don't know how to use it since it requires two pcm buffers (pcm_l
and pcm_r
). I don't understand how to put them together into a well-formed wav file, because I don't really know how they works.
Now can someone provide a simple working example on decoding an mp3 into a wav using lame in C/C++?
Thanks.
Take a look into the lame frontend source code. Start at the lame_decoder()
function in the .../frontend/lame_main.c
file, it decodes an MP3 file and writes the wave header.