catstodon/app/models/media_attachment.rb
Lady Lumb f9514b08f2 Added env variables for max image and video size.
I changed the IMAGE_LIMIT and VIDEO_LIMIT variables to read from the env, or use default if not set in the env, to make it easier to change this on an instance by instance basis and make it persistent across updates.
2019-06-02 14:38:13 +02:00

277 lines
7.4 KiB
Ruby

# frozen_string_literal: true
# == Schema Information
#
# Table name: media_attachments
#
# id :bigint(8) not null, primary key
# status_id :bigint(8)
# file_file_name :string
# file_content_type :string
# file_file_size :integer
# file_updated_at :datetime
# remote_url :string default(""), not null
# created_at :datetime not null
# updated_at :datetime not null
# shortcode :string
# type :integer default("image"), not null
# file_meta :json
# account_id :bigint(8)
# description :text
# scheduled_status_id :bigint(8)
# blurhash :string
#
class MediaAttachment < ApplicationRecord
self.inheritance_column = nil
enum type: [:image, :gifv, :video, :audio, :unknown]
IMAGE_FILE_EXTENSIONS = ['.jpg', '.jpeg', '.png', '.gif', '.webp'].freeze
VIDEO_FILE_EXTENSIONS = ['.webm', '.mp4', '.m4v', '.mov'].freeze
AUDIO_FILE_EXTENSIONS = ['.mp3', '.m4a', '.wav', '.ogg'].freeze
IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif', 'image/webp'].freeze
VIDEO_MIME_TYPES = ['video/webm', 'video/mp4', 'video/quicktime'].freeze
VIDEO_CONVERTIBLE_MIME_TYPES = ['video/webm', 'video/quicktime'].freeze
AUDIO_MIME_TYPES = ['audio/mpeg', 'audio/mp4', 'audio/vnd.wav', 'audio/wav', 'audio/x-wav', 'audio/x-wave', 'audio/ogg',].freeze
BLURHASH_OPTIONS = {
x_comp: 4,
y_comp: 4,
}.freeze
IMAGE_STYLES = {
original: {
pixels: 1_638_400, # 1280x1280px
file_geometry_parser: FastGeometryParser,
},
small: {
pixels: 160_000, # 400x400px
file_geometry_parser: FastGeometryParser,
blurhash: BLURHASH_OPTIONS,
},
}.freeze
AUDIO_STYLES = {
original: {
format: 'mp4',
convert_options: {
output: {
filter_complex: '"[0:a]compand,showwaves=s=640x360:mode=line,format=yuv420p[v]"',
map: '"[v]" -map 0:a',
threads: 2,
vcodec: 'libx264',
acodec: 'aac',
movflags: '+faststart',
},
},
},
}.freeze
VIDEO_STYLES = {
small: {
convert_options: {
output: {
vf: 'scale=\'min(400\, iw):min(400\, ih)\':force_original_aspect_ratio=decrease',
},
},
format: 'png',
time: 0,
file_geometry_parser: FastGeometryParser,
blurhash: BLURHASH_OPTIONS,
},
}.freeze
VIDEO_FORMAT = {
format: 'mp4',
convert_options: {
output: {
'loglevel' => 'fatal',
'movflags' => 'faststart',
'pix_fmt' => 'yuv420p',
'vf' => 'scale=\'trunc(iw/2)*2:trunc(ih/2)*2\'',
'vsync' => 'cfr',
'c:v' => 'h264',
'b:v' => '500K',
'maxrate' => '1300K',
'bufsize' => '1300K',
'crf' => 18,
},
},
}.freeze
IMAGE_LIMIT = (ENV['MAX_IMAGE_SIZE'] || 8.megabytes).to_i
VIDEO_LIMIT = (ENV['MAX_VIDEO_SIZE'] || 40.megabytes).to_i
belongs_to :account, inverse_of: :media_attachments, optional: true
belongs_to :status, inverse_of: :media_attachments, optional: true
belongs_to :scheduled_status, inverse_of: :media_attachments, optional: true
has_attached_file :file,
styles: ->(f) { file_styles f },
processors: ->(f) { file_processors f },
convert_options: { all: '-quality 90 -strip' }
validates_attachment_content_type :file, content_type: IMAGE_MIME_TYPES + VIDEO_MIME_TYPES + AUDIO_MIME_TYPES
validates_attachment_size :file, less_than: IMAGE_LIMIT, unless: :video_or_gifv?
validates_attachment_size :file, less_than: VIDEO_LIMIT, if: :video_or_gifv?
remotable_attachment :file, VIDEO_LIMIT
include Attachmentable
validates :account, presence: true
validates :description, length: { maximum: 420 }, if: :local?
scope :attached, -> { where.not(status_id: nil).or(where.not(scheduled_status_id: nil)) }
scope :unattached, -> { where(status_id: nil, scheduled_status_id: nil) }
scope :local, -> { where(remote_url: '') }
scope :remote, -> { where.not(remote_url: '') }
default_scope { order(id: :asc) }
def local?
remote_url.blank?
end
def needs_redownload?
file.blank? && remote_url.present?
end
def video_or_gifv?
video? || gifv?
end
def to_param
shortcode
end
def focus=(point)
return if point.blank?
x, y = (point.is_a?(Enumerable) ? point : point.split(',')).map(&:to_f)
meta = file.instance_read(:meta) || {}
meta['focus'] = { 'x' => x, 'y' => y }
file.instance_write(:meta, meta)
end
def focus
x = file.meta['focus']['x']
y = file.meta['focus']['y']
"#{x},#{y}"
end
after_commit :reset_parent_cache, on: :update
before_create :prepare_description, unless: :local?
before_create :set_shortcode
before_post_process :set_type_and_extension
before_save :set_meta
class << self
private
def file_styles(f)
if f.instance.file_content_type == 'image/gif'
{
small: IMAGE_STYLES[:small],
original: VIDEO_FORMAT,
}
elsif IMAGE_MIME_TYPES.include? f.instance.file_content_type
IMAGE_STYLES
elsif AUDIO_MIME_TYPES.include? f.instance.file_content_type
AUDIO_STYLES
elsif VIDEO_CONVERTIBLE_MIME_TYPES.include?(f.instance.file_content_type)
{
small: VIDEO_STYLES[:small],
original: VIDEO_FORMAT,
}
else
VIDEO_STYLES
end
end
def file_processors(f)
if f.file_content_type == 'image/gif'
[:gif_transcoder, :blurhash_transcoder]
elsif VIDEO_MIME_TYPES.include? f.file_content_type
[:video_transcoder, :blurhash_transcoder]
elsif AUDIO_MIME_TYPES.include? f.file_content_type
[:audio_transcoder]
else
[:lazy_thumbnail, :blurhash_transcoder]
end
end
end
private
def set_shortcode
self.type = :unknown if file.blank? && !type_changed?
return unless local?
loop do
self.shortcode = SecureRandom.urlsafe_base64(14)
break if MediaAttachment.find_by(shortcode: shortcode).nil?
end
end
def prepare_description
self.description = description.strip[0...420] unless description.nil?
end
def set_type_and_extension
self.type = VIDEO_MIME_TYPES.include?(file_content_type) ? :video : AUDIO_MIME_TYPES.include?(file_content_type) ? :audio : :image
end
def set_meta
meta = populate_meta
return if meta == {}
file.instance_write :meta, meta
end
def populate_meta
meta = file.instance_read(:meta) || {}
file.queued_for_write.each do |style, file|
meta[style] = style == :small || image? ? image_geometry(file) : video_metadata(file)
end
meta
end
def image_geometry(file)
width, height = FastImage.size(file.path)
return {} if width.nil?
{
width: width,
height: height,
size: "#{width}x#{height}",
aspect: width.to_f / height.to_f,
}
end
def video_metadata(file)
movie = FFMPEG::Movie.new(file.path)
return {} unless movie.valid?
{
width: movie.width,
height: movie.height,
frame_rate: movie.frame_rate,
duration: movie.duration,
bitrate: movie.bitrate,
}
end
def reset_parent_cache
return if status_id.nil?
Rails.cache.delete("statuses/#{status_id}")
end
end