[opus] encode/decode with Opus

[Didier Nkalla]

 Hi to everybody.
I have data in a buffer. when i encode it and decode it i does not obtain the same data. i think encode(decode(data)) = decode(encode(data)) = data. 
I also try it with trivial example in opus boundle downloded on the official website. My probleme is that how can i write two function myencode and mydecode such as myencode(mydecode(data)) = mydecode(myencode(data)) = data? 
Thank 
Best regards

Dott. Didier J. Nkalla Ehawe
Tel: 3287016325
Master student in software engineering 
Polytechnic University of Turin, Italy
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