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55e85a0d62
This plugin adds support for the GT-S650, Perfection V19 and Perfection V39 scanners. I've tested it personally with an Epson Perfection V39. This plugin uses the ISCAN_FIRMWARE_DIR environment variable, not ISCAN_FW_DIR. A quick grep didn't find any use of ISCAN_FW_DIR in the currently packaged plugins, but a quick Google suggests that this variable does (or at least used to) exist, so I'm not touching it.
22 lines
879 B
Diff
22 lines
879 B
Diff
Explanation:
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in libesci-interpreter-gt-f720.so in
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libesci_interpreter_gt_f720_342::libesci_interpreter_gt_f720_348 at 0xdf74: the
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binary blob esfw8b.bin is searched either in /usr/share/esci/ or in
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$ESCI_FIRMWARE_DIR. But since this library is to be used wia libsane.so in
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every binary in the system, we can't wrapProgram the relevant executables to
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set this environment variable. Instead, we patch iscan to set this variable
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before loading libesci-interpreter-gt-f720.so.
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--- backend/channel-usb.c.orig 2017-08-14 11:24:27.669582456 +0200
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+++ backend/channel-usb.c 2017-08-14 11:31:40.509010897 +0200
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@@ -169,6 +169,10 @@
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{
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SANE_Status s;
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+ setenv("ESCI_FIRMWARE_DIR", NIX_ESCI_PREFIX, 1);
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+ setenv("ISCAN_FW_DIR", NIX_ESCI_PREFIX, 1);
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+ setenv("ISCAN_FIRMWARE_DIR", NIX_ESCI_PREFIX, 1);
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+
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s = sanei_usb_open (self->name, &self->fd);
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if (SANE_STATUS_GOOD == s)
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