0d2ed48098
git-svn-id: https://svn.code.sf.net/p/gphoto/code/trunk/libgphoto2@1879 67ed7778-7388-44ab-90cf-0a291f65f57c
58 lines
2.8 KiB
Plaintext
58 lines
2.8 KiB
Plaintext
This is a fresh driver for the Minolta Dimage V camera, which has since been
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discontinued by Minolta. This driver contains no code form my earlier efforts.
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The assistance of Minolta was very helpful in writing this driver; I was given
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a copy of the specification and told that I could "share it with the Linux
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community". I am interpreting this "sharing" as the GNU GPL. Minolta takes no
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responsibility for the information they provided me, which is perfectly fair.
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Please see the file COPYING for more information.
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Copies of the Dimage V transfer specification are available under the
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aforementioned "share" clause; I will mail them globally, and fax them
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anywhere in the US or Canada. A lot of the information is in the code
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itself, but sometimes the real spec is nice so readers can find my bugs.
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Minolta has made it clear that they do not wish to release further protocols,
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and recommend that users of unsupported systems purchase SmartMedia readers
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to transfer images.
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This library is far from complete. There are plenty of places where better
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sanity checking could be done. I will continue to work on it until I buy a
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newer camera ;>
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Notes on specific functions:
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The capture function takes a picture, downloads it, and then deletes it.
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This image is always named dv00000.jpg, since that holds with the naming
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convention for the rest of the pictures, and simultaneously cannot be a
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valid name for an image retrieved from the camera. Sometimes the deletion
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of an image will fail after it has been retrieved; since reporting this
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error would mean the entire capture process failed, I merely print a
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message indicating which image needs to be deleted. This is, in my
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opinion, preferable to losing the picture entirely.
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The camera_init() function attempts to set the camera clock to the current
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system time. If it fails, the init function can still succeed; I do not
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believe that failing to set the clock should mean failure to initialize.
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The same is true of the camera_exit() function.
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At long last, the preview thumbnails finally work! The strange distortions
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that were occurring previously have been eliminated, and I have been able
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to retrieve accurate thumbnails reliably for the last several hundred
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images. This puts this driver as the first that I know of that handles
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the Dimage V thumbnail format; there were other programs to connect, but
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all (including my earlier attempts) just gave up on the retrieved data.
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More information on the file format can be obtained in the code itself.
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Deleting all images is now implemented correctly. This beats iterating
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accross all of them, hands down.
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Here are the pinouts for the serial cable:
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_____________ /-----\
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\ 5 4 3 2 1 / / X X X \
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\ 9 8 7 6 / | 2 5 3 |
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--------- -| 8 7 |-
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-----
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--Gus Hartmann, <gphoto-dimagev@gus-the-cat.org>
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