Class: Vips::ForeignFlags

Some hints about the image loader.

• :partial means that the image can be read directly from the file without needing to be unpacked to a temporary image first.

• :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 partialor sequential is set, the loader only supports whole image read. Setting both partialand sequential is an error.

• :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().