Differential D58122

fwdv: add AV/C DV capture driver for FireWire camcorders
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Authored by seuros on Jul 9 2026, 9:30 AM.

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rG23a6997e3071: fwdv: add AV/C DV capture driver for FireWire camcorders

Summary

Add fwdv(4) driver for DV video capture from FireWire camcorders
using AV/C protocol and isochronous streaming.

Supports AV/C tape transport commands (play, stop, ff, rewind, pause,
record, eject) with NTSC/PAL auto-detection and read(2) interface
for frame capture.

Test Plan

This requires a camcorder, not a webcam. Panasonic, Sony, Canon, JVC DV
camcorders with a 6-pin DV or full S400 FireWire port. Tested with a
Panasonic AG-HPX171 and others.

Diff Detail

Repository

rG FreeBSD src repository

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Tests Not Applicable

Event Timeline

seuros created this revision.Jul 9 2026, 9:30 AM

Herald added subscribers: ziaee, imp. · View Herald TranscriptJul 9 2026, 9:30 AM

seuros requested review of this revision.Jul 9 2026, 9:30 AM

Harbormaster completed remote builds in B74649: Diff 181594.Jul 9 2026, 9:30 AM

seuros added a reviewer: firewire.Jul 9 2026, 9:31 AM

seuros added projects: firewire, drivers.

The Datasheet reference are marked in the driver. No new revision will ever be made, so it safe to hardcode the section.

Once this land, i will rework all the drivers to mirror USB behavior (the dev/ show up only if a device is connected).

Firewire device currently support 1 device per driver (This was here, before fwcam)

adrian accepted this revision.Jul 12 2026, 3:23 PM

This revision is now accepted and ready to land.Jul 12 2026, 3:23 PM

Closed by commit rG23a6997e3071: fwdv: add AV/C DV capture driver for FireWire camcorders (authored by seuros, committed by adrian). · Explain WhyJul 12 2026, 3:36 PM

This revision was automatically updated to reflect the committed changes.

adrian added a commit: rG23a6997e3071: fwdv: add AV/C DV capture driver for FireWire camcorders.

Revision Contents
Changeset List

Path

Size

share/

man/

man4/

1 line

80 lines

sys/

conf/

1 line

1 line

dev/

firewire/

195 lines

1101 lines

modules/

firewire/

1 line

fwdv/

11 lines

Diff 181837

share/man/man4/Makefile

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share/man/man4/fwdv.4

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sys/conf/NOTES

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sys/conf/files

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sys/dev/firewire/fwdv.h

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sys/dev/firewire/fwdv.c

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sys/modules/firewire/Makefile

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sys/modules/firewire/fwdv/Makefile

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