Fw: [linux-dvb] DSM-CC question

Fw: [linux-dvb] DSM-CC question

[Suchita Gupta]

Hi,

First of all, I am new to this list, so I am not sire if this is right place for 

this question.
If not, please forgive me and point me to right list.

I am writing a DSMCC decoding implementation to persist it to local filesystem.
I am unable to understand few thiings related to "srg"

I know, it represents the top level directory. But how do I get the name of this 

directory?
I can extract the names of subdirs and files using name components but where is 
the name of top level directory?

Also, as far as I understand it, I can't start writing to the local filesystem 
until I have acquired the whole carousel.

Can, anyone please provide me some guidance.

Thanks in Advance,
rs


      

_______________________________________________
linux-dvb users mailing list
For V4L/DVB development, please use instead linux-media@vger.kernel.org
linux-dvb@linuxtv.org
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb



      

Re: Fw: [linux-dvb] DSM-CC question

[Simon Liddicott]

Have you had a look at the code for redbutton?

http://redbutton.sourceforge.net/

Si

On 14 September 2010 21:32, Suchita Gupta <suchitagupta@yahoo.com> wrote:
>
> Hi,
>
> First of all, I am new to this list, so I am not sire if this is right place for
>
> this question.
> If not, please forgive me and point me to right list.
>
> I am writing a DSMCC decoding implementation to persist it to local filesystem.
> I am unable to understand few thiings related to "srg"
>
> I know, it represents the top level directory. But how do I get the name of this
>
> directory?
> I can extract the names of subdirs and files using name components but where is
> the name of top level directory?
>
> Also, as far as I understand it, I can't start writing to the local filesystem
> until I have acquired the whole carousel.
>
> Can, anyone please provide me some guidance.
>
> Thanks in Advance,
> rs
>
>
>
>
> _______________________________________________
> linux-dvb users mailing list
> For V4L/DVB development, please use instead linux-media@vger.kernel.org
> linux-dvb@linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
>
>
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

Re: Fw: [linux-dvb] DSM-CC question

[Peter Evertz]

Or take a look at "mhp" or "dsmcc" plugins for vdr. Both not activ 
projects, but both have a dsmcc implementation.

Are you working on a "hbbtv" solution ?

Simon Liddicott schrieb:
> Have you had a look at the code for redbutton?
>
> http://redbutton.sourceforge.net/
>
> Si
>
> On 14 September 2010 21:32, Suchita Gupta <suchitagupta@yahoo.com> wrote:
>   
>> Hi,
>>
>> First of all, I am new to this list, so I am not sire if this is right place for
>>
>> this question.
>> If not, please forgive me and point me to right list.
>>
>> I am writing a DSMCC decoding implementation to persist it to local filesystem.
>> I am unable to understand few thiings related to "srg"
>>
>> I know, it represents the top level directory. But how do I get the name of this
>>
>> directory?
>> I can extract the names of subdirs and files using name components but where is
>> the name of top level directory?
>>
>> Also, as far as I understand it, I can't start writing to the local filesystem
>> until I have acquired the whole carousel.
>>
>> Can, anyone please provide me some guidance.
>>
>> Thanks in Advance,
>> rs
>>
>>
>>
>>
>> _______________________________________________
>> linux-dvb users mailing list
>> For V4L/DVB development, please use instead linux-media@vger.kernel.org
>> linux-dvb@linuxtv.org
>> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
>>
>>
>>
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-media" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
>>     
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>   

Re: Fw: [linux-dvb] DSM-CC question

[Suchita Gupta]

Hi All,

Thanks to everyone for their help.
I am able to build a tree from DSMCC carousel.

I have done only file, dir and srg messages at the time being as I don't 
understand the usage of stream and stream event messages at the moment.
Can anyone please explain these to me and how can they be assembled. 

Thanks,
rs


----- Original Message ----
From: Peter Evertz <leo2@pec.homeip.net>
To: Simon Liddicott <simon@liddicott.com>
Cc: Suchita Gupta <suchitagupta@yahoo.com>; linux-media@vger.kernel.org
Sent: Wed, 15 September, 2010 19:05:43
Subject: Re: Fw: [linux-dvb] DSM-CC question

Or take a look at "mhp" or "dsmcc" plugins for vdr. Both not activ 
projects, but both have a dsmcc implementation.

Are you working on a "hbbtv" solution ?

Simon Liddicott schrieb:
> Have you had a look at the code for redbutton?
>
> http://redbutton.sourceforge.net/
>
> Si
>
> On 14 September 2010 21:32, Suchita Gupta <suchitagupta@yahoo.com> wrote:
>  
>> Hi,
>>
>> First of all, I am new to this list, so I am not sire if this is right place 
>>for
>>
>> this question.
>> If not, please forgive me and point me to right list.
>>
>> I am writing a DSMCC decoding implementation to persist it to local 
>filesystem.
>> I am unable to understand few thiings related to "srg"
>>
>> I know, it represents the top level directory. But how do I get the name of 
>>this
>>
>> directory?
>> I can extract the names of subdirs and files using name components but where 
>is
>> the name of top level directory?
>>
>> Also, as far as I understand it, I can't start writing to the local 
filesystem
>> until I have acquired the whole carousel.
>>
>> Can, anyone please provide me some guidance.
>>
>> Thanks in Advance,
>> rs
>>
>>
>>
>>
>> _______________________________________________
>> linux-dvb users mailing list
>> For V4L/DVB development, please use instead linux-media@vger.kernel.org
>> linux-dvb@linuxtv.org
>> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
>>
>>
>>
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-media" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
>>    
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>



      

Re: Fw: [linux-dvb] DSM-CC question

[Suchita Gupta]

 Hi,

I need help to understand stream and stream event messages.


 Stream Message:
I can read upto message length. But after that what is the use of taps  and if i 
process those taps, what information do i need to store on  filesystem and how 
that information can be used. Also, In what cases in  DVB-S DSMCC we can get 
stream message and what is the use of it. As far  as I understand all the useful 
data is in file messages.(dir and srg are  required to get proper structure but 
actual contents which can be used  are in file).
 
Stream Event Message:
Similarly, with stream event message what is the use of taps and how to  process 
them. Also, what is the use of event ids in this message and  why do we need to 
store it or use it?

Thanks for help.



----- Original Message ----
From: Peter Evertz <leo2@pec.homeip.net>
To: Simon Liddicott <simon@liddicott.com>
Cc: Suchita Gupta <suchitagupta@yahoo.com>; linux-media@vger.kernel.org
Sent: Wed, 15 September, 2010 19:05:43
Subject: Re: Fw: [linux-dvb] DSM-CC question

Or take a look at "mhp" or "dsmcc" plugins for vdr. Both not activ 
projects, but both have a dsmcc implementation.

Are you working on a "hbbtv" solution ?

Simon Liddicott schrieb:
> Have you had a look at the code for redbutton?
>
> http://redbutton.sourceforge.net/
>
> Si
>
> On 14 September 2010 21:32, Suchita Gupta <suchitagupta@yahoo.com> wrote:
>  
>> Hi,
>>
>> First of all, I am new to this list, so I am not sire if this is right place 
>>for
>>
>> this question.
>> If not, please forgive me and point me to right list.
>>
>> I am writing a DSMCC decoding implementation to persist it to local 
>filesystem.
>> I am unable to understand few thiings related to "srg"
>>
>> I know, it represents the top level directory. But how do I get the name of 
>>this
>>
>> directory?
>> I can extract the names of subdirs and files using name components but where 
>is
>> the name of top level directory?
>>
>> Also, as far as I understand it, I can't start writing to the local 
filesystem
>> until I have acquired the whole carousel.
>>
>> Can, anyone please provide me some guidance.
>>
>> Thanks in Advance,
>> rs
>>
>>
>>
>>
>> _______________________________________________
>> linux-dvb users mailing list
>> For V4L/DVB development, please use instead linux-media@vger.kernel.org
>> linux-dvb@linuxtv.org
>> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
>>
>>
>>
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-media" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
>>    
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>