ef805f2341
It can be convenient for device users to check what it supports, without having multiple functions to check each single feature. So expose this and add tests.
61 lines
1.5 KiB
Python
Executable file
61 lines
1.5 KiB
Python
Executable file
#!/usr/bin/python3
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import gi
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gi.require_version('FPrint', '2.0')
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from gi.repository import FPrint, GLib
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import cairo
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import sys
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if len(sys.argv) != 2:
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print("Please specify exactly one argument, the output location for the capture image")
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sys.exit(1)
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ctx = GLib.main_context_default()
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c = FPrint.Context()
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c.enumerate()
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devices = c.get_devices()
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d = devices[0]
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assert d.has_feature(FPrint.DeviceFeature.CAPTURE)
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assert d.has_feature(FPrint.DeviceFeature.IDENTIFY)
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assert d.has_feature(FPrint.DeviceFeature.VERIFY)
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assert not d.has_feature(FPrint.DeviceFeature.DUPLICATES_CHECK)
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assert not d.has_feature(FPrint.DeviceFeature.STORAGE)
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assert not d.has_feature(FPrint.DeviceFeature.STORAGE_LIST)
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assert not d.has_feature(FPrint.DeviceFeature.STORAGE_DELETE)
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assert not d.has_feature(FPrint.DeviceFeature.STORAGE_CLEAR)
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del devices
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d.open_sync()
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img = d.capture_sync(True)
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d.close_sync()
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del d
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del c
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width = img.get_width()
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height = img.get_height()
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c_img = cairo.ImageSurface(cairo.FORMAT_RGB24, width, height)
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c_rowstride = c_img.get_stride()
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buf = img.get_data()
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c_buf = c_img.get_data()
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for x in range(width):
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for y in range(height):
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# The upper byte is don't care, but the location depends on endianness,
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# so just set all of them.
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c_buf[y * c_rowstride + x * 4 + 0] = buf[y * width + x]
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c_buf[y * c_rowstride + x * 4 + 1] = buf[y * width + x]
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c_buf[y * c_rowstride + x * 4 + 2] = buf[y * width + x]
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c_buf[y * c_rowstride + x * 4 + 3] = buf[y * width + x]
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c_img.mark_dirty()
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c_img.write_to_png(sys.argv[1])
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