ae285e790d
The code tried to only write the RGB bytes of FORMAT_RGB24, however, the in-memory layout is different on big-endian which would result in the wrong bytes being written. Fix this by simply also writing the byte we do not care about.
49 lines
1.1 KiB
Python
Executable file
49 lines
1.1 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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d.open_sync()
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img = d.capture_sync(True)
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d.close_sync()
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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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