I'm trying to understand cSdtFilter in order to write a channel scanner.

will it the plugin for vdr with possibility to scan dvb-s2 channels ?

Goga

I see that when it finds a SI::NVODReferenceDescriptorTag it will add it to the previously found channel with channel->SetLinkChannels, but it only does if it is in the current section (channel is a local variable) while the sdt could span several sections.

From the specifications here

http://neuron2.net/library/mpeg2/iso13818-1.pdf

and here

http://www.dvb.org/technology/standards/a005r5.tm1324r13.tr101211.v1.10.1.pd...

I don't understand if this mechanism is correct, shouldn't the "time_shifted_services" link to the "NVOD_reference"? Besides, I don't see that the relation between a channels and its linkchannels is preserved in channels.conf (though I don't really care).

I also see that cSdtFilter starts processing with the first section, and that shouldn't really be necessary as long as one processes all sections.

On 29.09.2010 15:22, Luca Olivetti wrote:

Hello,

I'm trying to understand cSdtFilter in order to write a channel scanner.

I see that when it finds a SI::NVODReferenceDescriptorTag it will add it to the previously found channel with channel->SetLinkChannels, but it only does if it is in the current section (channel is a local variable) while the sdt could span several sections.

From the specifications here

http://neuron2.net/library/mpeg2/iso13818-1.pdf

and here

http://www.dvb.org/technology/standards/a005r5.tm1324r13.tr101211.v1.10.1.pd...

I don't understand if this mechanism is correct, shouldn't the "time_shifted_services" link to the "NVOD_reference"? Besides, I don't see that the relation between a channels and its linkchannels is preserved in channels.conf (though I don't really care).

You're right, the link channel information is not stored in channels.conf.

I also see that cSdtFilter starts processing with the first section, and that shouldn't really be necessary as long as one processes all sections.

Personally I'm not interested in that whole NVOD stuff, therefore I'm afraid I can't be of much help there. If you can suggest any improvements in that area, please post a patch.

Klaus