1isodump(5)                      Linux IEEE 1394                     isodump(5)
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NAME

6       isodump - format of IEEE 1394 isochronous packets dump file
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DESCRIPTION

9       The  isodump  format  stores  a  series of IEEE 1394 isochronous stream
10       packets (possibly from multiple  channels),  including  their  headers.
11       Its main use is as the output format of dumpiso(1) and the input format
12       of sendiso(1).
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14       The 32 byte header starts at offset 0 with the string "1394 isodump v1"
15       followed  by  a  zero  byte.  The next 8 bytes form a 64 bit big endian
16       integer, which represents a bit mask of the channels that were  dumped.
17       A  set bit at position (1 << x) signifies that channel x was being lis‐
18       tened on.  The following 8 bytes are set to zero.
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20       The iso packets follow the header and are appended to the  data  stream
21       in  the  order  they  were received.  The packets consist of the header
22       quadlet  as  originally  received  and  the  data  quadlets   following
23       directly.   The  CRC  quadlets  after header and data do not appear and
24       everything is in big endian, as seen on the bus.
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26       There is no further framing of the packets in the format, packet bound‐
27       aries  can  be  found  by  looking at the data size field in the header
28       quadlet of each packet.  The data size field appears in the  most  sig‐
29       nificant  16 bits of the header quadlet, contain the size in bytes (the
30       actual packet is padded to a multiple of four bytes) and do not include
31       the header packet.
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COMPATIBILITY

34       This format was introduced with the iso send and dump tools distributed
35       with libraw1394.  No one else uses it so far.
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SEE ALSO

38       sendiso(1), dumpiso(1)
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AUTHOR

41       Andreas Bombe <aeb@debian.org>
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45libraw1394 2.0.4                  isodump v1                        isodump(5)
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