[Info-vax] proper format for JPEG files

[Arne Vajhøj]

On 8/1/2011 9:39 AM, Richard Maher wrote:
> "Phillip Helbig---undress to reply"<helbig at astro.multiCLOTHESvax.de>  wrote
> in message news:j0f8q6$b1b$1 at online.de...
>> What is the "proper" format for JPEG files on VMS, in particular if they
>> are served by a web server and displayed in a web browser?  I have some
>> which are
>>
>>    Record format:      Fixed length 512 byte records
>>    Record attributes:  None
>>
>> and some which are
>>
>>    Record format:      Stream_LF, maximum 0 bytes, longest 32767 bytes
>>    Record attributes:  Carriage return carriage control
>>
>> and both work.  (The former were transferred via FTP from a Windows
>> system (sorry, I don't have a VMS machine with a DVD reader) and the
>> latter saved from the web via a web browser.)
>>
>
> FWIW, the Tier3 Applet Uploader sets the FAC=BIO and the FOP=UFO and I was
> about to jump up and down and say I/others need STREAM (not STREAM_LF) but
> then I see that Fixed-Length 512 byte records are perfectly acceptable as
> well.
>
> See below for more detail (or ask in
> http://h30499.www3.hp.com/t5/Languages-and-Scripting/bd-p/itrc-291 and I can
> leave a formatted copy :-) but basically I was looking for the absolute
> fastest way to get an Applet/SWF/JS or HTML file down the line. I too am
> limited to a buffer size of 32768 but I think that was more to do with _BG:
> $QIO limitations than new big i/o disk-driver functionality.
>
> Anyway, I still opt for STREAM even though I can't remember why at the
> moment. Maybe because TCP/IP is a stream-oriented protocol and although I
> love DECnet record-boundries there's just not many of them around :-(

>              .title          T3$APP_LDR_DEF - Applet Loader external data
> ;           .author         Richard Maher
>
>              .library        /sys$library:lib.mlb/
> ;+
> ;           $library/create/macro inet.mlb sys$library:ucx$inetdef
> ;-
>              .library        /inet/
>
>              $inetsymdef     GLOBAL
>              $siocdef        GLOBAL

Why Macro-32?

Arne