Speex dev - Jun 2005 - SpeexBits Questions

Thanks, it makes more sense to me now. Does speex_bit_read_from also 
append in that manner?

Jean-Marc Valin wrote:
> speex_bits_reset is before encoding, not decoding. If you don't call
it,
> then everything you encode will be appended so it will grow without end.
> As for the point of the SpeexBits struct, it's there as a sort of
"array
> of bits" to it's easy to pack and unpack bits.
>
>     Jean-Marc
>
> Le lundi 06 juin 2005 ? 13:54 -0500, Matt DeMoss a ?crit :
>  
>
>> The example in the documentation demonstrates using speex_bits_reset 
>> before encoding and decoding each frame.
>>
>> "
>> speex_bits_reset(&bits);
>>
>> speex_encode(enc_state, input_frame, &bits);
>>
>> nbBytes = speex_bits_write(&bits, byte_ptr, MAX_NB_BYTES);
>> "
>>
>> What happens if this is not done? I think I'm missing the point of 
>> having a SpeexBits object.
>>
>>
>> _______________________________________________
>> Speex-dev mailing list
>> Speex-dev@xiph.org
>> http://lists.xiph.org/mailman/listinfo/speex-dev
>>   
>
>
>  
>

Le lundi 06 juin 2005 ? 14:14 -0500, Matt DeMoss a ?crit
:
> Thanks, it makes more sense to me now. Does speex_bit_read_from also 
> append in that manner?
No, speex_bit_read_from() overwrites whatever was there.

	Jean-Marc
> Jean-Marc Valin wrote:
> 
> > speex_bits_reset is before encoding, not decoding. If you don't
call it,
> > then everything you encode will be appended so it will grow without
end.
> > As for the point of the SpeexBits struct, it's there as a sort of
"array
> > of bits" to it's easy to pack and unpack bits.
> >
> >     Jean-Marc
> >
> > Le lundi 06 juin 2005 ? 13:54 -0500, Matt DeMoss a ?crit :
> >  
> >
> >> The example in the documentation demonstrates using
speex_bits_reset
> >> before encoding and decoding each frame.
> >>
> >> "
> >> speex_bits_reset(&bits);
> >>
> >> speex_encode(enc_state, input_frame, &bits);
> >>
> >> nbBytes = speex_bits_write(&bits, byte_ptr, MAX_NB_BYTES);
> >> "
> >>
> >> What happens if this is not done? I think I'm missing the
point of
> >> having a SpeexBits object.
> >>
> >>
> >> _______________________________________________
> >> Speex-dev mailing list
> >> Speex-dev@xiph.org
> >> http://lists.xiph.org/mailman/listinfo/speex-dev
> >>   
> >
> >
> >  
> >
> 
> 
> _______________________________________________
> Speex-dev mailing list
> Speex-dev@xiph.org
> http://lists.xiph.org/mailman/listinfo/speex-dev
-- 
Jean-Marc Valin <Jean-Marc.Valin@USherbrooke.ca>
Universite de Sherbrooke