class Vips::ForeignFlags
Some hints about the image loader.
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‘:partial` means that the image can be read directly from the file without needing to be unpacked to a temporary image first.
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‘:sequential` means that the loader supports lazy reading, but only top-to-bottom (sequential) access. Formats like PNG can read sets of scanlines, for example, but only in order.
If neither partial` or sequential` is set, the loader only supports whole image read. Setting both partial` and sequential` is an error.
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‘:bigendian` means that image pixels are most-significant byte first. Depending on the native byte order of the host machine, you may need to swap bytes. See vips_copy().