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�OptionaN Class representing a SANE option.
Attributes:
index -- number from 0 to n, giving the option number
name -- a string uniquely identifying the option
title -- single-line string containing a title for the option
desc -- a long string describing the option; useful as a help message
type -- type of this option. Possible values: TYPE_BOOL,
TYPE_INT, TYPE_STRING, and so forth.
unit -- units of this option. Possible values: UNIT_NONE,
UNIT_PIXEL, etc.
size -- size of the value in bytes
cap -- capabilities available; CAP_EMULATED, CAP_SOFT_SELECT, etc.
constraint -- constraint on values. Possible values:
None : No constraint
(min,max,step) Integer values, from min to max, stepping by
list of integers or strings: only the listed values are allowed
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ScanDevicea Class representing a SANE device.
Methods:
startScan() -- initiate a scan, using the current settings
cancelScan() -- cancel an in-progress scanning operation
Also available, but rather low-level:
getParameters() -- get the current parameter settings of the device
getOptions() -- return a list of tuples describing all the options.
Attributes:
optlist -- list of option names
You can also access an option name to retrieve its value, and to
set it. For example, if one option has a .name attribute of
imagemode, and scanner is a ScanDevice object, you can do:
print scanner.imagemode
scanner.imagemode = 'Full frame'
scanner.['imagemode'] returns the corresponding Option object.
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| j �� S )a? Return a 6-tuple holding all the current device settings:
(format, format_name, last_frame, (pixels_per_line, lines), depth, bytes_per_line)
- format is the SANE frame type
- format is one of 'grey', 'color' (RGB), 'red', 'green', 'blue'.
- last_frame [bool] indicates if this is the last frame of a multi frame image
- (pixels_per_line, lines) specifies the size of the scanned image (x,y)
- lines denotes the number of scanlines per frame
- depth gives number of pixels per sample
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Perform a scan with the current device.
Calls sane_start().
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