dvb_dmx_init(9)

✨ dvb_dmx_init ✨

ok so bestie, welcome to the dvb_dmx_init(9) page from the Kernel API Manual 💅 this one's short but it's lowkey the moment everything starts, so pay attention 🎀

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🌸 NAME 🌸

dvb_dmx_init — initialize a digital TV demux struct 🦋

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⭐ SYNOPSIS ⭐

int dvb_dmx_init (struct dvb_demux *demux );

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💖 ARGUMENTS 💖

• demux — the struct dvb_demux you want to be initialized ✨ that's the one, that's the whole parameter, slay.

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👑 DESCRIPTION 👑

ok so here's the tea 🫖 before you can even think about registering a digital TV demux struct, drivers should call this routine. No skipping, no shortcuts — it's giving prerequisite, iykyk 💀

And on its typical usage, some fields should be initialized at the driver before calling it. So like, the driver does its little pre-game and then hands it over 🌈

A typical usecase is:

     dvb->demux.dmx.capabilities =
             DMX_TS_FILTERING | DMX_SECTION_FILTERING |
             DMX_MEMORY_BASED_FILTERING;
     dvb->demux.priv       = dvb;
     dvb->demux.filternum  = 256;
     dvb->demux.feednum    = 256;
     dvb->demux.start_feed = driver_start_feed;
     dvb->demux.stop_feed  = driver_stop_feed;
     ret = dvb_dmx_init(dvb->demux);
     if (ret < 0)
             return ret;

look at that. capabilities set, priv pointed at dvb, filternum and feednum both at 256 (twinsies 💕), start_feed and stop_feed wired up to driver_start_feed and driver_stop_feed, and then dvb_dmx_init(dvb->demux) gets called — with a ret < 0 check right after so you bail out with return ret if things went sideways 😭 periodt.

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🔥 SEE ALSO 🔥

• Kernel file ./include/media/dvb_demux.h
• enum dvb_dmx_filter_type(9)
• enum dvb_dmx_state(9)
• struct dvb_demux_filter(9)
• struct dvb_demux_feed(9)
• struct dvb_demux(9)
• dvb_dmx_release(9)
• dvb_dmx_swfilter_packets(9)
• dvb_dmx_swfilter(9)
• dvb_dmx_swfilter_204(9)
• dvb_dmx_swfilter_raw(9)

like, go read them all bestie, they're literally right there 🧚

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ngl this is a kernel API page, so the usual "don't break your system" energy applies — read the fields you need to set before you call, fr fr 🙈

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🎀 that's the whole page, no cap 🎀 this one lives in ./include/media, dated October 2026 — mwah, go init that demux queen 👑💜