Hi, There is another bug in the epson backend. With certain values for the scanarea, get_parameters() will return more lines than the backend actually sets in set_scan_area(). The frontend (scanimage) uses the lines returned by get_parameters() to write the PNM/TIFF header, but gets fewer lines than expected due to the scan area specification.
I don't understand why the backend calculates the line count at each call of get_parameters() instead of returning the lines already there - the get_parameters() comment states: "Once a scan was started, this routine has to report the correct values ...". A reproduceable case for an 1650 Photo with SANE_DEBUG_EPSON=1 follows. Regards, Thomas + scanimage -d epson:/dev/usb/scanner0 -v --format pnm --mode Color --depth 8 --brightness 0 --sharpness 0 --gamma-correction 'High density printing' --color-correction 'CRT monitors' --resolution 2400 -l 7.8 -t 73.2 -x 34.8 -y 22.8 --source 'Transparency Unit' --film-type 'Positive Film' --focus-position 'Focus on glass' [sanei_debug] Setting debug level of epson to 1. [epson] SANE Epson Backend v0.2.19 - 2002-01-18 [epson] type B 0x42 [epson] level 8 0x38 [epson] option equipment is installed [epson] resolution (dpi): 50 [epson] resolution (dpi): 60 [epson] resolution (dpi): 72 [epson] resolution (dpi): 75 [epson] resolution (dpi): 80 [epson] resolution (dpi): 90 [epson] resolution (dpi): 100 [epson] resolution (dpi): 120 [epson] resolution (dpi): 133 [epson] resolution (dpi): 144 [epson] resolution (dpi): 150 [epson] resolution (dpi): 160 [epson] resolution (dpi): 175 [epson] resolution (dpi): 180 [epson] resolution (dpi): 200 [epson] resolution (dpi): 216 [epson] resolution (dpi): 240 [epson] resolution (dpi): 266 [epson] resolution (dpi): 300 [epson] resolution (dpi): 320 [epson] resolution (dpi): 350 [epson] resolution (dpi): 360 [epson] resolution (dpi): 400 [epson] resolution (dpi): 480 [epson] resolution (dpi): 600 [epson] resolution (dpi): 720 [epson] resolution (dpi): 800 [epson] resolution (dpi): 900 [epson] resolution (dpi): 1200 [epson] resolution (dpi): 1600 [epson] resolution (dpi): 1800 [epson] resolution (dpi): 2400 [epson] resolution (dpi): 3200 [epson] maximum scan area: x 27200 y 37440 [epson] Max. supported color depth = 16 [epson] Focus position = 0x40 [epson] Enabling 'Set Focus' support [epson] TPU detected [epson] set = 7.800003 [epson] set = 73.199997 [epson] set = 42.599991 [epson] set = 95.999985 [epson] use extension = 1 [epson] Setting focus to glass surface [epson] sane_start: Setting data format to 8 bits [epson] sane_start: set_gamma( s, 0x0 ). [epson] sane_start: set_color_correction( s, 0x80 ) [epson] get para 0x8051288 0x8051930 tlx 7.800003 tly 73.199997 brx 42.599991 bry 95.999985 [mm] [epson] set_scan_area: 0x8051288 737 6917 3288 2059 [epson] get para 0x8051288 0x8051930 tlx 7.800003 tly 73.199997 brx 42.599991 bry 95.999985 [mm] scanimage: scanning image of size 3288x2154 pixels at 24 bits/pixel scanimage: acquiring RGB frame scanimage: min/max graylevel value = 6/237 scanimage: read 20309976 bytes in total -- Firewall Beispiel: http://wet.port5.com Bergbilder: http://www.timeware.at/wet
