NAME
fwcontrol —
FireWire control utility
SYNOPSIS
fwcontrol |
[-rt] [-c
node] [-d
node] [-o
node] [-s
node] [-l
file] [-g
gap_count] [-b
pri_req] [-R
filename] [-S
filename] |
DESCRIPTION
Thefwcontrol utility is designed to provide a way for
users to access and control the FireWire subsystem. Without options,
fwcontrol will output a list of devices those are/were
connected to the bus.
-r- Initiate bus reset.
-t- Show the topology map.
-cnode- Show the configuration ROM on the node.
-dnode- Hex dump of the configuration ROM.
-onode- Send a link-on phy packet to the node.
-snode- Write to RESET_START register on the node.
-lfile- Load hex dump file of the configuration ROM and parse it.
-ggap_count- Broadcast gap_count by phy_config packet.
-ipri_req- Set PRIORITY_BUDGET register on all supported nodes.
-Rfilename- Receive DV stream and dump it to a file. Use Ctl-C to stop the receiving.
Some DV cameras seem not to send the stream if a bus manager exits. If you
cannot get the stream, try the following commands.
sysctl hw.firewire.try_bmr=0; fwcontrol -r
The resulting file contains raw DV data excluding isochronous header and CIP header. It can be handled by
libdvin the dports(7) collection. -Sfilename- Send a DV file as isochronous stream.
FILES
- /dev/fw0
EXAMPLES
Each DV frame has fixed size and it is easy to edit those frame order.
fwcontrol -R original.dv
Receive stream.
dd if=original.dv of=first.dv bs=120000 count=30
Get first 30 frames(NTSC).
dd if=original.dv of=second.dv bs=120000 skip=30 count=30
Get second 30 frames(NTSC).
cat second.dv first.dv | fwcontrol -S /dev/stdin
Swap first and second 30 frames and send them to DV recorder.
For PAL, replace 'bs=120000' with 'bs=144000'.
SEE ALSO
HISTORY
The fwcontrol utility first appeared in
FreeBSD 5.0.
AUTHORS
Hidetoshi Shimokawa <simokawa@FreeBSD.org>
BUGS
This utility is still under development and provided for debug purpose.