Messages in this thread | | | From | Marc Gonzalez <> | Subject | DVB abstractions: filters and feeds | Date | Mon, 15 Jul 2019 15:10:56 +0200 |
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Hello,
I'm having a hard time understanding two abstractions in the DVB framework, namely filters and feeds (P.S. I now see there are dvb_demux_filter's and dmxdev_filter's, so it's really 3 abstractions that I'm not grasping.)
Specifically,
struct dvb_demux { ... int filternum; int feednum; struct dvb_demux_filter *filter; struct dvb_demux_feed *feed;
and
struct dmxdev { ... struct dmxdev_filter *filter; int filternum;
Also, I'm not sure about the relationship between dvb_demux and dmxdev. Should they have the same filternum for a given adapter instance?
Basically, could someone shed a bit of light on these topics?
https://linuxtv.org/downloads/v4l-dvb-apis-new/kapi/dtv-demux.html?highlight=dmxdev#c.dmxdev struct dmxdev : "Describes a digital TV demux device." /me puzzled
https://linuxtv.org/downloads/v4l-dvb-apis-new/kapi/dtv-demux.html?highlight=dvb_demux#c.dvb_demux struct dvb_demux : "represents a digital TV demux"
Regards.
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