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New parameters "obs_pad" and "bdr_obs_exempt" for -dvd_obs

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Thomas Schmitt
2021-09-12 11:27:54 +02:00
parent 555048a0a1
commit 58e7eb0877
9 changed files with 150 additions and 67 deletions
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xorriso/xorriso.texi
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@ -50,7 +50,7 @@
@c man .\" First parameter, NAME, should be all caps
@c man .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
@c man .\" other parameters are allowed: see man(7), man(1)
@c man .TH XORRISO 1 "Version 1.5.5, Jun 04, 2021"
@c man .TH XORRISO 1 "Version 1.5.5, Sep 12, 2021"
@c man .\" Please adjust this date whenever revising the manpage.
@c man .\"
@c man .\" Some roff macros, for reference:
@ -3754,14 +3754,30 @@ in order to set an own address limit.
"data" causes full speed to start when superblock and directory entries are
written and writing of file content blocks begins.
@c man .TP
@item -dvd_obs "default"|"32k"|"64k"
@kindex -dvd_obs set write block size
@cindex Write, block size, -dvd_obs
@item -dvd_obs "default"|"32k"|"64k"|"obs_pad"|"bdr_obs_exempt"
@kindex -dvd_obs set write block size and end alignment
@cindex Write, block size and end alignment, -dvd_obs
GNU/Linux specific:
Set the number of bytes to be transmitted with each write operation to DVD
or BD media. A number of 64 KB may improve throughput with bus systems which
show latency problems. The default depends on media type, on command
-stream_recording , and on compile time options.
@*
On all systems:
"obs_pad" pads the data of the last write operation of a DVD-R[W] DAO session
or BD-R session up to the full size of an output chunk.
This padding has to be applied automatically to the other DVD and BD media
types, where it causes e.g. ISO images to have trailing unclaimed blocks.
Whether it is applied automatically to BD-R depends on "bdr_obs_exempt".
"obs_pad" can be disabled by "no_obs_pad".
@*
"bdr_obs_exempt" exempts BD-R media from automatic unconditional transaction
end padding, provided that this padding is not requested by "obs_pad" and that
no stream_recording is requested. "bdr_obs_exempt" can be disabled by
"no_obs_exempt".
@*
This is a new feature introduced with version 1.5.6. It might become default
in later versions.
@c man .TP
@item -modesty_on_drive parameter[:parameters]
@kindex -modesty_on_drive keep drive buffer hungry