Skip to contentSkip to conversation

DSM-CC question

linux-dvb Suchita Gupta 3 participants 5 messages Sep 14, 2010 – Oct 5, 2010 Media (V4L/DVB)

lore
Share & tools
lore

Suchita Gupta

author
#0 lore raw

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 [email protected] [email protected]
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

#1 lore raw

Have you had a look at the code for redbutton?

http://redbutton.sourceforge.net/

Si

Quoted 42 lines · 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 [email protected] [email protected]
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 [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html

#2 lore raw

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 ?

Quoted 55 lines · Simon Liddicott

Have you had a look at the code for redbutton?

http://redbutton.sourceforge.net/

Si

Quoted 36 lines · 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 [email protected] [email protected]
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

Quoted 6 lines

--
To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to [email protected]
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 [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html

author
#3 lore raw

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 <[email protected]>
To: Simon Liddicott <[email protected]>
Cc: Suchita Gupta <[email protected]>; [email protected]
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 ?

Quoted 18 lines · Simon Liddicott

Have you had a look at the code for redbutton?

http://redbutton.sourceforge.net/

Si

Quoted 9 lines · 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.

Quoted 11 lines
Quoted 7 lines

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

Quoted 3 lines

the name of top level directory?

Also, as far as I understand it, I can't start writing to the local

filesystem

Quoted 30 lines
Quoted 19 lines

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 [email protected] [email protected]
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

Quoted 6 lines

--
To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to [email protected]
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 [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html

author
#4 lore raw
In reply to Peter Evertz

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 <[email protected]>
To: Simon Liddicott <[email protected]>
Cc: Suchita Gupta <[email protected]>; [email protected]
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 ?

Quoted 18 lines · Simon Liddicott

Have you had a look at the code for redbutton?

http://redbutton.sourceforge.net/

Si

Quoted 9 lines · 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.

Quoted 11 lines
Quoted 7 lines

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

Quoted 3 lines

the name of top level directory?

Also, as far as I understand it, I can't start writing to the local

filesystem

Quoted 30 lines
Quoted 19 lines

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 [email protected] [email protected]
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

Quoted 6 lines

--
To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to [email protected]
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 [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html