Speex dev - Jan 2011 - stream encoded in big-endian machine and then decoded in little-endian machine

Hi, all,

I have a question about encoding/decoding in big/little endian
machines. I have a client running in an old PowerBook G4 with
big-endian CPU, the audio stream is encoded then transmitted to a Mac
Mini with little-endian CPU, and decoded in this Mac Mini. I am
wondering the decoded stream is in big-endian or little-endian? What
kind of necessary steps I need to process when I build the speex
library for this purpose?

Any comments are welcome, thanks in advance.

-Allen

It's a stream of binary data, no endianness issue. At least not withing 
Speex itself.

On 11-01-19 12:50 AM, Allen Guan wrote:
> Hi, all,
>
> I have a question about encoding/decoding in big/little endian
> machines. I have a client running in an old PowerBook G4 with
> big-endian CPU, the audio stream is encoded then transmitted to a Mac
> Mini with little-endian CPU, and decoded in this Mac Mini. I am
> wondering the decoded stream is in big-endian or little-endian? What
> kind of necessary steps I need to process when I build the speex
> library for this purpose?
>
> Any comments are welcome, thanks in advance.
>
> -Allen
> _______________________________________________
> Speex-dev mailing list
> Speex-dev at xiph.org
> http://lists.xiph.org/mailman/listinfo/speex-dev
>
>

Thanks a lot for your prompt reply.

So at the receiver/decoder side, the decoded stream (I use
16bit/sample) is the same endian as the CPU of that machine?

I noticed the speex library has a compile switch to change the endian
of header information to make it always little-endian. When I encode
my stream, I just call the encoding function directly with the
correctly compiled speex library, right?

Thanks!

-Allen

On Tue, Jan 18, 2011 at 10:17 PM, Jean-Marc Valin <jmvalin at jmvalin.ca>
wrote:
> It's a stream of binary data, no endianness issue. At least not withing
> Speex itself.
>
> On 11-01-19 12:50 AM, Allen Guan wrote:
>>
>> Hi, all,
>>
>> I have a question about encoding/decoding in big/little endian
>> machines. I have a client running in an old PowerBook G4 with
>> big-endian CPU, the audio stream is encoded then transmitted to a Mac
>> Mini with little-endian CPU, and decoded in this Mac Mini. I am
>> wondering the decoded stream is in big-endian or little-endian? What
>> kind of necessary steps I need to process when I build the speex
>> library for this purpose?
>>
>> Any comments are welcome, thanks in advance.
>>
>> -Allen
>> _______________________________________________
>> Speex-dev mailing list
>> Speex-dev at xiph.org
>> http://lists.xiph.org/mailman/listinfo/speex-dev
>>
>>
>