[Speex-dev] Determine number of 20ms frames in packet - without decoding

[Alexander Chemeris]

Follow up - patch to make this new function available
on Windows from DLL.

On Mon, Jul 13, 2009 at 12:41 AM, Alexander
Chemeris<Alexander.Chemeris at sipez.com> wrote:
> Hi,
>
> Bringing up this unfinished old thread. Here are my patches:
>
> wb_skip_table-fix-and-move.diff - fixes the issue with wb_skip_table and
> makes it available for use outside of nb_celp.c (we need it for the second
> patch).
>
> speex_bits_get_num_frames.diff - adds speex_bits_get_num_frames()
> method as we discussed.
>
> Hope to see this incorporated into trunk ;)
>
> On Thu, Feb 21, 2008 at 12:10 PM, Jean-Marc
> Valin<jean-marc.valin at usherbrooke.ca> wrote:
>>>> Oh, your table looked fine. I think it's mine that was wrong for the
>>>> "null mode" (which nobody ever uses I guess!).
>>>
>>> I'm not sure, but I guess it may be used in VBR or DTX mode?
>>> At least that's why I kept it.
>>
>> Of course it *can* be used (and needs fixing). It just seems few people
>> did :-)
>>
>>> So, what's the next step towards intergartion? I guess it should
>>> be somehow made available from Speex API level, e.g. with
>>> new speex_decoder_ctl() or speex_lib_ctl() request? I have
>>> no idea about the best way here, and would appreciate your
>>> advices.
>>
>> I don't think it should be a _ctl() call because there's too much
>> potential for confusion. I would just keep it as a separate API call
>> like you have. I'd tend to put it in speex_bits.h, so I guess it should
>> be called speex_bits_get_number_of_frames() or something like that.
>>
>>>>> Sure. But in SDP you specify mode and not bitrate. ;) So I want
>>>>> to operate with the same things as in SDP.
>>>> I see. BTW, you can ask the full bit-rate to the encoder or decoder.
>>>> It's only the mode that give you the layer's bit-rate (which we might
>>>> want to change).
>>>
>>> Sorry, not sure I follow you. What do you mean by "you can ask the full
>>> bit-rate to the encoder or decoder"?
>>
>> I mean that SPEEX_GET_BITRATE will actually return the total bit-rate in
>> bits per second.
>>
>> Cheers,
>>
>>        Jean-Marc
>>
>
>
>
> --
> Regards,
> Alexander Chemeris.
>
> SIPez LLC.
> SIP VoIP, IM and Presence Consulting
> http://www.SIPez.com
> tel: +1 (617) 273-4000
>



-- 
Regards,
Alexander Chemeris.

SIPez LLC.
SIP VoIP, IM and Presence Consulting
http://www.SIPez.com
tel: +1 (617) 273-4000
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