I want to draw a wave representation of an m4a or a MP3 file.
I want to draw the wave in few seconds.
The method i am using is taking value of sound from a callback function during playtime. But it takes the same time as needed for playing the file.
Is there any other method of reading audio file directly and get the audio values in seconds.
can i take audio values like this
ExtAudioFileRead( tExtAudioFileRef, &numberOfFrames, &tABL);
if so how can i retreive values from the buffer using an ordinary for loop till the end of the file?
Thanks in Advance
Sandeep A.C
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