fwctl(8) - NetBSD Manual Pages

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FWCTL(8)                NetBSD System Manager's Manual                FWCTL(8)


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 out-
     put 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 sup-
                                ported 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 sup-
                                ported 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 result-
                                ing 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 sur-
     prisingly 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 pur-
     poses.  Especially MPEG TS reception support is very rudimental and sup-
     ports only high-bandwidth MPEG-2 streams (fn field in CIP header equals
     3).

NetBSD 7.0                      August 24, 2010                     NetBSD 7.0