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..., ofs, n); with n > 1, and that's wrong. You cannot look ahead in a stream, and so your code is already doing things in a way that is not to spec. You then use array indexes and bit shift operators to build multi-byte values. What's worse, I see that your code is looking at (contentOffset - 1), which is really bad. What you need to do is write a bitStream function. It should only read each byte from the stream once and completely deal with all 8 bits before dealing with the next byte. You should never look ahead beyond the current byte. Instead, you need a long long accumu...

Thank you very much! But how to deal with endianness in the case of bit stream? Some blocks (for example MinBlockSize) require 16bits (simply swap first and second), some block (e.g.MinFrameSize) require 3 byte-array to be reverted. Finally totalSamples is stored in 5 bytes ( only last 4 bits from first one byte are used). It was a real issue to make it little-endian (here is how I did it: