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require 'mini_magick'
module Hydra::Derivatives::Processors
class RawImage < Image
class_attribute :timeout
protected
def create_image(destination_name, format, quality = nil)
xfrm = load_image_transformer
# Transpose format and scaling due to the fact that ImageMagick can
# read but not write RAW files and this will otherwise cause many
# cryptic segmentation faults
xfrm.format(format)
yield(xfrm) if block_given?
xfrm.quality(quality.to_s) if quality
write_image(destination_name, format, xfrm)
remove_temp_files(xfrm)
end
# Delete any temp files that might clutter up the disk if
# you are doing a batch or don't touch your temporary storage
# for a long time
def remove_temp_files(xfrm)
xfrm.destroy!
end
# Override this method if you want a different transformer, or # need to load the raw image from a different source (e.g.
# external file).
#
# In this case always add an extension to help out MiniMagick
# with RAW files
def load_image_transformer
MiniMagick::Image.open(source_path)
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems