NAME
fwctl —
IEEE1394 control utility
SYNOPSIS
fwctl |
[-prt]
[-b
pri_req]
[-c node]
[-d node]
[-g
gap_count]
[-l file]
[-M mode]
[-m EUI64 |
hostname]
[-o node]
[-R
filename]
[-S
filename]
[-s node]
[-u
bus_num] |
DESCRIPTION
The
fwctl utility is designed to provide a way for users to
access and control the
NetBSD IEEE1394 subsystem.
Without options,
fwctl will output a list of devices that
are/were connected to the bus.
The following options are available:
-
-
- -b
pri_req
- Set the
PRIORITY_BUDGET
register on
all supported nodes.
-
-
- -c
node
- Show the configuration ROM on the node.
-
-
- -d
node
- Hex dump of the configuration ROM.
-
-
- -f
node
- Force specified node to be the root
node on the next bus reset by sending a PHY config packet. Valid values
are 0 - 63.
-
-
- -g
gap_count
- Broadcast new gap_count by phy_config
packet. By default this value is 63 on all nodes. Valid values are 0 -
63.
-
-
- -i
pri_req
- Set the
PRIORITY_BUDGET
register on
all supported nodes.
-
-
- -l
file
- Load hex dump file of the configuration ROM and parse
it.
-
-
- -M
mode
- Explicitly specify either dv or
mpeg mode for the incoming stream. Only meaningful
in case of and must precede the -R option. If not
specified, the program will try to guess. In case of “format
0x20” error, try to force the mpeg mode.
-
-
- -m
EUI64 | hostname
- Set default fwmem target. Hostname will be converted to
EUI64.
-
-
- -o
node
- Send a link-on PHY packet to the node.
-
-
- -p
- Dump PHY registers.
-
-
- -R
filename
- Receive DV or MPEG TS stream and dump it to a file. Use
Ctrl-C to stop 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.ieee1394if.try_bmr=0
fwctl -r
The resulting file contains raw DV data excluding isochronous header and CIP
header. It can be handled by the pkgsrc/multimedia/libdv
package. The resulting MPEG TS stream can be played and sent over a
network using the VideoLAN tool (pkgsrc/multimedia/vlc).
The stream can be piped directly to vlc, see
EXAMPLES.
-
-
- -r
- Initiate bus reset.
-
-
- -S
filename
- Send a DV file as isochronous stream.
-
-
- -s
node
- Write to the
RESET_START
register
on the node.
-
-
- -t
- Show the topology map.
-
-
- -u
bus_num
- Specify the IEEE1394 bus number to be operated on. The
default is bus 0.
FILES
-
-
- /dev/fw0.0
-
EXAMPLES
Each DV frame has a fixed size and it is easy to edit the frame order.
fwctl -R original.dv
Receive a DV stream with DV camera attached.
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 | fwctl -S
/dev/stdin
Swap first and second 30 frames and send them to DV recorder.
For PAL, replace “
bs=120000
” with
“
bs=144000
”.
fwctl -R file.m2t
Receive an MPEG TS stream from a camera producing MPEG transport stream. This
has been tested with SONY HDR-FX1E camera that produces HD MPEG-2 stream at 25
Mbps bandwidth.
To send the stream from the camera over the network using TCP (which
surprisingly works better with vlc), you can use
fwctl -R - | nc 192.168.10.11 9000
with
pkgsrc/net/netcat and to receive the stream, use
nc -l -p 9000 | vlc -
To netcast via UDP, you need to use
pkgsrc/misc/buffer, since
vlc is not fast enough to read UDP packets from buffers and thus it
experiences dropouts when run directly. The sending side can use
fwctl -R - | nc 192.168.10.11 9000
and to receive the stream, use
nc -l -u -p 9000 | buffer -s 10k -b 1000 -m 20m
-p 5 | vlc -
For more information on how to work with
vlc see its
documentation.
SEE ALSO
mplayer(1),
vlc(1),
fwip(4),
fwohci(4),
ieee1394if(4),
sbp(4)
HISTORY
The
fwctl command first appeared in
FreeBSD
5.0, as
fwcontrol. It was added to
NetBSD 4.0 under its present name.
AUTHORS
Hidetoshi Shimokawa
<
simokawa@FreeBSD.org>
Petr Holub
<
hopet@ics.muni.cz> -
MPEG TS mode.
KIYOHARA Takashi
<
kiyohara@NetBSD.org>
BUGS
This utility is still under development and provided for debugging purposes.
Especially MPEG TS reception support is very rudimental and supports only
high-bandwidth MPEG-2 streams (fn field in CIP header equals 3).