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media assets: fix error when thumbnailing 16-bit images.

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Fix an error caused when trying to generate thumbnails for 16-bit
PNG images.
This commit is contained in:
evazion
2021-12-05 21:36:20 -06:00
parent d47154a9a6
commit 853569701b
1 changed files with 3 additions and 3 deletions
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6
app/logical/media_file/image.rb
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@@ -47,15 +47,15 @@ class MediaFile::Image < MediaFile
def resize(max_width, max_height, format: :jpeg, quality: 85, **options)
# @see https://www.libvips.org/API/current/Using-vipsthumbnail.md.html
# @see https://www.libvips.org/API/current/libvips-resample.html#vips-thumbnail
if colorspace == :srgb
if colorspace.in?(%i[srgb rgb16])
resized_image = preview_frame.image.thumbnail_image(max_width, height: max_height, import_profile: "srgb", export_profile: "srgb", **options)
elsif colorspace == :cmyk
# Leave CMYK as CMYK for better color accuracy than sRGB.
resized_image = preview_frame.image.thumbnail_image(max_width, height: max_height, import_profile: "cmyk", export_profile: "cmyk", intent: :relative, **options)
elsif colorspace == :"b-w" && has_embedded_profile?
elsif colorspace.in?(%i[b-w grey16]) && has_embedded_profile?
# Convert greyscale to sRGB so that the color profile is properly applied before we strip it.
resized_image = preview_frame.image.thumbnail_image(max_width, height: max_height, export_profile: "srgb", **options)
elsif colorspace == :"b-w"
elsif colorspace.in?(%i[b-w grey16])
# Otherwise, leave greyscale without a profile as greyscale because
# converting it to sRGB would change it from 1 channel to 3 channels.
resized_image = preview_frame.image.thumbnail_image(max_width, height: max_height, **options)