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<!-- received="Tue Aug 3 10:21:52 1999 PDT" -->
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<!-- sent="Tue, 3 Aug 1999 18:23:06 +0100 (GMT)" -->
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<!-- name="Nick Lamb" -->
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<!-- email="njl98r@ecs.soton.ac.uk" -->
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<!-- subject="RGBI (was Re: xsane-0.31 available)" -->
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<!-- inreplyto="37A7042E.154F9D8D@wolfsburg.de" -->
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<title>sane-devel: RGBI (was Re: xsane-0.31 available)</title>
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<h1>RGBI (was Re: xsane-0.31 available)</h1>
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<b>Nick Lamb</b> (<a href="mailto:njl98r@ecs.soton.ac.uk"><i>njl98r@ecs.soton.ac.uk</i></a>)<br>
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<i>Tue, 3 Aug 1999 18:23:06 +0100 (GMT)</i>
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<p>
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<ul>
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<li> <b>Messages sorted by:</b> <a href="date.html#25">[ date ]</a><a href="index.html#25">[ thread ]</a><a href="subject.html#25">[ subject ]</a><a href="author.html#25">[ author ]</a>
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<li> <b>Next message:</b> <a href="0026.html">Nick Lamb: "Re: SANE_FRAME Formats (was Re: xsane-0.31 available)"</a>
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<li> <b>Previous message:</b> <a href="0024.html">Oliver Rauch: "Re: Sane + FreeBSD 3.2"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0029.html">Oliver Rauch: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<li> <b>Reply:</b> <a href="0029.html">Oliver Rauch: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<li> <b>Reply:</b> <a href="0030.html">Oliver Rauch: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<li> <b>Reply:</b> <a href="0034.html">Oliver Rauch: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<li> <b>Reply:</b> <a href="0041.html">Steve Gunnell: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<li> <b>Reply:</b> <a href="0069.html">Oliver Rauch: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<li> <b>Reply:</b> <a href="0073.html">Steve Gunnell: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<li> <b>Reply:</b> <a href="0075.html">Oliver Rauch: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<!-- reply="end" -->
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</ul>
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<!-- body="start" -->
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On Tue, 3 Aug 1999, Oliver Rauch wrote:<br>
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<i>> it does not make any sense to define thousands of frame formats if the</i><br>
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<i>> frontends are not able to handle them.</i><br>
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<i>> So the right way is to make available the formats the frontends are able to</i><br>
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<i>> save,</i><br>
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<i>> that is 1 bit, gray, RGB and RGBA. We could also add CMYK and such things,</i><br>
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<i>> also JPEG could be interisting, and I think one day we will add this.</i><br>
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<i>> A second thing is to define a frame like SANE_FRAME_RAW</i><br>
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<i>> where the frontend simply dumps the data into a file. But that is one file</i><br>
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<i>> format and</i><br>
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<i>> there is no need to define thousands of SANE_FRAME_WHATEVER</i><br>
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<i>> because the fronends will not be able to handle it.</i><br>
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<p>
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It is not the purpose of SANE to define a nice format for saving images<br>
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as JPEG files on your harddisk. That job was done by JPEG/JFIF. <br>
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<p>
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If you don't have any technical reasons (and "I think Infrared is a lot<br>
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like Alpha" isn't a technical reason) for removing this frame format,<br>
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which IS ALREADY IN USE then please put it back. The fact that saving<br>
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RGBI->RGBA might not be faithful is not helped by renaming RGBI.<br>
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<p>
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I see no sign of "thousands of SANE_FRAME_WHATEVER" -- Come back with<br>
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this doom-laden message when we have even TEN such frame types.<br>
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<p>
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I can't see a use for SANE_FRAME_RAW -- If I receive a SANE_FRAME_RAW I<br>
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am now the proud owner of some random bytes. The contents are totally<br>
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undefined, so why use SANE at all?<br>
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<p>
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SANE_FRAME_CMYK would be useful only if someone made a device which<br>
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exports such data. I'm not aware of any such devices.<br>
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<p>
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SANE_FRAME_JPEG is useful, and was proposed (in some form) for SANE 2.0<br>
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Since we now have someone on the list who wants to export this kind of<br>
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frame, we should try to see what can be done to accomodate it ASAP.<br>
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<p>
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Nick.<br>
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<p>
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<p>
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<pre>
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--
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Source code, list archive, and docs: <a href="http://www.mostang.com/sane/">http://www.mostang.com/sane/</a>
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To unsubscribe: echo unsubscribe sane-devel | mail <a href="mailto:majordomo@mostang.com">majordomo@mostang.com</a>
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</pre>
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<!-- body="end" -->
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<p>
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<ul>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0026.html">Nick Lamb: "Re: SANE_FRAME Formats (was Re: xsane-0.31 available)"</a>
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<li> <b>Previous message:</b> <a href="0024.html">Oliver Rauch: "Re: Sane + FreeBSD 3.2"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0029.html">Oliver Rauch: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<li> <b>Reply:</b> <a href="0029.html">Oliver Rauch: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<li> <b>Reply:</b> <a href="0030.html">Oliver Rauch: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<li> <b>Reply:</b> <a href="0034.html">Oliver Rauch: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<li> <b>Reply:</b> <a href="0041.html">Steve Gunnell: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<li> <b>Reply:</b> <a href="0069.html">Oliver Rauch: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<li> <b>Reply:</b> <a href="0073.html">Steve Gunnell: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<li> <b>Reply:</b> <a href="0075.html">Oliver Rauch: "Re: RGBI (was Re: xsane-0.31 available)"</a>
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<!-- reply="end" -->
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</ul>
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