[softwarelist] Ovation Pro RISC OS 2.77 6th March
- From: David Pilling <flist@xxxxxxxxxxxxxxxxxxx>
- To: David Pilling <davidpilling@xxxxxxxxxxxxx>
- Date: Sun, 6 Mar 2011 21:19:43 +0000
Hi,
I've uploaded a new version of Ovation Pro for RISC OS to:
http://www.davidpilling.com/ovationpro/upgrade/op277.zip
This fixes the problems with rotated/image processed JPEGs on Beagle
board [1].
I have also set the code up so that if transformed JPEG plotting is
supported, OP uses it. This should be a big win if you are printing
large JPEG files to the PostScript level 3 driver, not only will the
memory requirement be smaller [2], final PostScript should be more
compact and probably higher quality.
I would like someone to confirm if this works, I've not tested it.
[1] Thanks to the ROOL forum I believe I have resolved this problem. It
seems new version of RISC OS (SpriteExtend 1.36 or later) correctly
follow the documentation, bit 0 of R0 must be set to get the JPEG size,
and OP was not setting this bit. Older versions of RISC OS provide the x
and y dimensions of the JPEG regardless of the bit being set or not. I
got the code correct in other places, I guess I copied this one piece of
code from somewhere where I did not require the dimensions.
[2] If you're wondering how the Ross McGuiness thread ended, Ross sent
me a JPEG, and I worked out it would need 45MB of free memory to print
it rotated, that's a lot of memory.
--
David Pilling
email: david@xxxxxxxxxxxxxxxxxxx
web: http://www.davidpilling.net
post: David Pilling, P.O. Box 22, Thornton-Cleveleys, Blackpool. FY5 1LR. UK
fax: +44(0)870-0520-941
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