Sha256: 444b15d67d3b9a7617a9294b733ba75fc2c09da370b78cb28c696f1809c194eb
Contents?: true
Size: 1.44 KB
Versions: 39
Compression:
Stored size: 1.44 KB
Contents
# frozen_string_literal: true
module ActiveStorage
# This analyzer relies on the third-party {ruby-vips}[https://github.com/libvips/ruby-vips] gem. Ruby-vips requires
# the {libvips}[https://libvips.github.io/libvips/] system library.
class Analyzer::ImageAnalyzer::Vips < Analyzer::ImageAnalyzer
def self.accept?(blob)
super && ActiveStorage.variant_processor == :vips
end
private
def read_image
begin
require "ruby-vips"
rescue LoadError
logger.info "Skipping image analysis because the ruby-vips gem isn't installed"
return {}
end
download_blob_to_tempfile do |file|
image = instrument("vips") do
::Vips::Image.new_from_file(file.path, access: :sequential)
end
if valid_image?(image)
yield image
else
logger.info "Skipping image analysis because Vips doesn't support the file"
{}
end
rescue ::Vips::Error => error
logger.error "Skipping image analysis due to an Vips error: #{error.message}"
{}
end
end
ROTATIONS = /Right-top|Left-bottom|Top-right|Bottom-left/
def rotated_image?(image)
ROTATIONS === image.get("exif-ifd0-Orientation")
rescue ::Vips::Error
false
end
def valid_image?(image)
image.avg
true
rescue ::Vips::Error
false
end
end
end
Version data entries
39 entries across 38 versions & 6 rubygems