Speex dev - Oct 2007 - Speex DSPic

Hi I was wondering if someone may help. We are currently using a DSPic to
store speex data on a Smart Card.

We have now decided to use a PC to playback the speex data. The only problem
is our data does not have the

Correct header. Do you know if there is an example in C++ that can take a
string of speex frames and construct the correct 

Header so that it can be played back using a pc based speex decoder. I have
read the documentation on 

The Oggs header and speex header but am very confused regarding the pages
and checksum.

Also can I write a header to memory and then sequentially write the frames.
Once I have finished encoding can I 

Update the checksum and expect the file to play.

Currently I am writing a filename in FAT32 to a smart card. I then start to
decode and write each 12byte frame to the card.

Once I have finished encoding I update the FA table and have the speex
frames written to a card. All I need to do now

Is attach a header to this data so that it can be played back.

I would greatly appreciate any help you can offer with this problem.

 

Regards

Bobby Sohal

 

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Hi Bobby,

Sounds like you want to start from the speexenc code. It's really messy,
but it's easy to spot where the Speex frames are encoded and change that
to whatever you like.

	Jean-Marc

Bobby Sohal wrote:
> Hi I was wondering if someone may help. We are currently using a DSPic to
> store speex data on a Smart Card.
> 
> We have now decided to use a PC to playback the speex data. The only
problem
> is our data does not have the
> 
> Correct header. Do you know if there is an example in C++ that can take a
> string of speex frames and construct the correct 
> 
> Header so that it can be played back using a pc based speex decoder. I have
> read the documentation on 
> 
> The Oggs header and speex header but am very confused regarding the pages
> and checksum.
> 
> Also can I write a header to memory and then sequentially write the frames.
> Once I have finished encoding can I 
> 
> Update the checksum and expect the file to play.
> 
> Currently I am writing a filename in FAT32 to a smart card. I then start to
> decode and write each 12byte frame to the card.
> 
> Once I have finished encoding I update the FA table and have the speex
> frames written to a card. All I need to do now
> 
> Is attach a header to this data so that it can be played back.
> 
> I would greatly appreciate any help you can offer with this problem.
> 
>  
> 
> Regards
> 
> Bobby Sohal
> 
>  
> 
> 
> 
> 
> ------------------------------------------------------------------------
> 
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