forked from treehouse/mastodon
394 lines
11 KiB
Ruby
394 lines
11 KiB
Ruby
# frozen_string_literal: true
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# == Schema Information
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#
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# Table name: media_attachments
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#
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# id :bigint(8) not null, primary key
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# status_id :bigint(8)
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# file_file_name :string
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# file_content_type :string
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# file_file_size :integer
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# file_updated_at :datetime
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# remote_url :string default(""), not null
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# created_at :datetime not null
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# updated_at :datetime not null
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# shortcode :string
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# type :integer default("image"), not null
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# file_meta :json
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# account_id :bigint(8)
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# description :text
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# scheduled_status_id :bigint(8)
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# blurhash :string
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# processing :integer
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# file_storage_schema_version :integer
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# thumbnail_file_name :string
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# thumbnail_content_type :string
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# thumbnail_file_size :integer
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# thumbnail_updated_at :datetime
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# thumbnail_remote_url :string
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#
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class MediaAttachment < ApplicationRecord
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self.inheritance_column = nil
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include Attachmentable
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enum type: [:image, :gifv, :video, :unknown, :audio]
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enum processing: [:queued, :in_progress, :complete, :failed], _prefix: true
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MAX_DESCRIPTION_LENGTH = 1_500
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IMAGE_FILE_EXTENSIONS = %w(.jpg .jpeg .png .gif).freeze
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VIDEO_FILE_EXTENSIONS = %w(.webm .mp4 .m4v .mov).freeze
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AUDIO_FILE_EXTENSIONS = %w(.ogg .oga .mp3 .wav .flac .opus .aac .m4a .3gp .wma).freeze
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META_KEYS = %i(
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focus
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colors
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original
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small
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).freeze
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IMAGE_MIME_TYPES = %w(image/jpeg image/png image/gif).freeze
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VIDEO_MIME_TYPES = %w(video/webm video/mp4 video/quicktime video/ogg).freeze
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VIDEO_CONVERTIBLE_MIME_TYPES = %w(video/webm video/quicktime).freeze
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AUDIO_MIME_TYPES = %w(audio/wave audio/wav audio/x-wav audio/x-pn-wave audio/ogg audio/vorbis audio/mpeg audio/mp3 audio/webm audio/flac audio/aac audio/m4a audio/x-m4a audio/mp4 audio/3gpp video/x-ms-asf).freeze
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BLURHASH_OPTIONS = {
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x_comp: 4,
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y_comp: 4,
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}.freeze
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IMAGE_STYLES = {
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original: {
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pixels: 2_073_600, # 1920x1080px
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file_geometry_parser: FastGeometryParser,
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}.freeze,
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small: {
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pixels: 160_000, # 400x400px
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file_geometry_parser: FastGeometryParser,
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blurhash: BLURHASH_OPTIONS,
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}.freeze,
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}.freeze
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VIDEO_FORMAT = {
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format: 'mp4',
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content_type: 'video/mp4',
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convert_options: {
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output: {
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'loglevel' => 'fatal',
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'movflags' => 'faststart',
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'pix_fmt' => 'yuv420p',
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'vf' => 'scale=\'trunc(iw/2)*2:trunc(ih/2)*2\'',
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'vsync' => 'cfr',
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'c:v' => 'h264',
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'maxrate' => '1300K',
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'bufsize' => '1300K',
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'frames:v' => 60 * 60 * 3,
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'crf' => 18,
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'map_metadata' => '-1',
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}.freeze,
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}.freeze,
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}.freeze
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VIDEO_PASSTHROUGH_OPTIONS = {
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video_codecs: ['h264'].freeze,
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audio_codecs: ['aac', nil].freeze,
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colorspaces: ['yuv420p'].freeze,
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options: {
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format: 'mp4',
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convert_options: {
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output: {
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'loglevel' => 'fatal',
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'map_metadata' => '-1',
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'c:v' => 'copy',
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'c:a' => 'copy',
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}.freeze,
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}.freeze,
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}.freeze,
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}.freeze
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VIDEO_STYLES = {
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small: {
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convert_options: {
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output: {
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'loglevel' => 'fatal',
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vf: 'scale=\'min(400\, iw):min(400\, ih)\':force_original_aspect_ratio=decrease',
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}.freeze,
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}.freeze,
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format: 'png',
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time: 0,
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file_geometry_parser: FastGeometryParser,
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blurhash: BLURHASH_OPTIONS,
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}.freeze,
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original: VIDEO_FORMAT.merge(passthrough_options: VIDEO_PASSTHROUGH_OPTIONS).freeze,
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}.freeze
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AUDIO_STYLES = {
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original: {
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format: 'mp3',
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content_type: 'audio/mpeg',
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convert_options: {
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output: {
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'loglevel' => 'fatal',
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'q:a' => 2,
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}.freeze,
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}.freeze,
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}.freeze,
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}.freeze
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VIDEO_CONVERTED_STYLES = {
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small: VIDEO_STYLES[:small].freeze,
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original: VIDEO_FORMAT.freeze,
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}.freeze
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THUMBNAIL_STYLES = {
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original: IMAGE_STYLES[:small].freeze,
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}.freeze
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GLOBAL_CONVERT_OPTIONS = {
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all: '-quality 90 -strip +set modify-date +set create-date',
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}.freeze
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IMAGE_LIMIT = 10.megabytes
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VIDEO_LIMIT = 40.megabytes
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MAX_VIDEO_MATRIX_LIMIT = 2_304_000 # 1920x1200px
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MAX_VIDEO_FRAME_RATE = 60
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belongs_to :account, inverse_of: :media_attachments, optional: true
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belongs_to :status, inverse_of: :media_attachments, optional: true
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belongs_to :scheduled_status, inverse_of: :media_attachments, optional: true
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has_attached_file :file,
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styles: ->(f) { file_styles f },
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processors: ->(f) { file_processors f },
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convert_options: GLOBAL_CONVERT_OPTIONS
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before_file_validate :set_type_and_extension
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before_file_validate :check_video_dimensions
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validates_attachment_content_type :file, content_type: IMAGE_MIME_TYPES + VIDEO_MIME_TYPES + AUDIO_MIME_TYPES
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validates_attachment_size :file, less_than: ->(m) { m.larger_media_format? ? VIDEO_LIMIT : IMAGE_LIMIT }
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remotable_attachment :file, VIDEO_LIMIT, suppress_errors: false, download_on_assign: false, attribute_name: :remote_url
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has_attached_file :thumbnail,
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styles: THUMBNAIL_STYLES,
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processors: [:lazy_thumbnail, :blurhash_transcoder, :color_extractor],
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convert_options: GLOBAL_CONVERT_OPTIONS
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validates_attachment_content_type :thumbnail, content_type: IMAGE_MIME_TYPES
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validates_attachment_size :thumbnail, less_than: IMAGE_LIMIT
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remotable_attachment :thumbnail, IMAGE_LIMIT, suppress_errors: true, download_on_assign: false
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validates :account, presence: true
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validates :description, length: { maximum: MAX_DESCRIPTION_LENGTH }, if: :local?
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validates :file, presence: true, if: :local?
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validates :thumbnail, absence: true, if: -> { local? && !audio_or_video? }
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scope :attached, -> { where.not(status_id: nil).or(where.not(scheduled_status_id: nil)) }
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scope :unattached, -> { where(status_id: nil, scheduled_status_id: nil) }
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scope :local, -> { where(remote_url: '') }
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scope :remote, -> { where.not(remote_url: '') }
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scope :cached, -> { remote.where.not(file_file_name: nil) }
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default_scope { order(id: :asc) }
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def local?
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remote_url.blank?
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end
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def not_processed?
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processing.present? && !processing_complete?
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end
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def needs_redownload?
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file.blank? && remote_url.present?
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end
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def larger_media_format?
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video? || gifv? || audio?
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end
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def audio_or_video?
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audio? || video?
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end
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def to_param
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shortcode.presence || id&.to_s
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end
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def focus=(point)
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return if point.blank?
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x, y = (point.is_a?(Enumerable) ? point : point.split(',')).map(&:to_f)
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meta = (file.instance_read(:meta) || {}).with_indifferent_access.slice(*META_KEYS)
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meta['focus'] = { 'x' => x, 'y' => y }
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file.instance_write(:meta, meta)
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end
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def focus
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x = file.meta&.dig('focus', 'x')
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y = file.meta&.dig('focus', 'y')
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return if x.nil? || y.nil?
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"#{x},#{y}"
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end
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attr_writer :delay_processing
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def delay_processing?
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@delay_processing
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end
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def delay_processing_for_attachment?(attachment_name)
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@delay_processing && attachment_name == :file
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end
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after_commit :enqueue_processing, on: :create
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after_commit :reset_parent_cache, on: :update
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before_create :prepare_description, unless: :local?
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before_create :set_unknown_type
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before_create :set_processing
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after_post_process :set_meta
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class << self
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def supported_mime_types
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IMAGE_MIME_TYPES + VIDEO_MIME_TYPES + AUDIO_MIME_TYPES
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end
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def supported_file_extensions
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IMAGE_FILE_EXTENSIONS + VIDEO_FILE_EXTENSIONS + AUDIO_FILE_EXTENSIONS
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end
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private
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def file_styles(attachment)
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if attachment.instance.file_content_type == 'image/gif' || VIDEO_CONVERTIBLE_MIME_TYPES.include?(attachment.instance.file_content_type)
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VIDEO_CONVERTED_STYLES
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elsif IMAGE_MIME_TYPES.include?(attachment.instance.file_content_type)
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IMAGE_STYLES
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elsif VIDEO_MIME_TYPES.include?(attachment.instance.file_content_type)
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VIDEO_STYLES
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else
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AUDIO_STYLES
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end
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end
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def file_processors(instance)
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if instance.file_content_type == 'image/gif'
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[:gif_transcoder, :blurhash_transcoder]
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elsif VIDEO_MIME_TYPES.include?(instance.file_content_type)
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[:transcoder, :blurhash_transcoder, :type_corrector]
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elsif AUDIO_MIME_TYPES.include?(instance.file_content_type)
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[:image_extractor, :transcoder, :type_corrector]
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else
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[:lazy_thumbnail, :blurhash_transcoder, :type_corrector]
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end
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end
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end
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private
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def set_unknown_type
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self.type = :unknown if file.blank? && !type_changed?
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end
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def prepare_description
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self.description = description.strip[0...MAX_DESCRIPTION_LENGTH] unless description.nil?
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end
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def set_type_and_extension
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self.type = begin
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if VIDEO_MIME_TYPES.include?(file_content_type)
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:video
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elsif AUDIO_MIME_TYPES.include?(file_content_type)
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:audio
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else
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:image
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end
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end
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end
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def set_processing
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self.processing = delay_processing? ? :queued : :complete
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end
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def check_video_dimensions
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return unless (video? || gifv?) && file.queued_for_write[:original].present?
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movie = ffmpeg_data(file.queued_for_write[:original].path)
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return unless movie.valid?
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raise Mastodon::StreamValidationError, 'Video has no video stream' if movie.width.nil? || movie.frame_rate.nil?
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raise Mastodon::DimensionsValidationError, "#{movie.width}x#{movie.height} videos are not supported" if movie.width * movie.height > MAX_VIDEO_MATRIX_LIMIT
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raise Mastodon::DimensionsValidationError, "#{movie.frame_rate.floor}fps videos are not supported" if movie.frame_rate.floor > MAX_VIDEO_FRAME_RATE
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end
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def set_meta
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file.instance_write :meta, populate_meta
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end
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def populate_meta
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meta = (file.instance_read(:meta) || {}).with_indifferent_access.slice(*META_KEYS)
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file.queued_for_write.each do |style, file|
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meta[style] = style == :small || image? ? image_geometry(file) : video_metadata(file)
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end
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meta[:small] = image_geometry(thumbnail.queued_for_write[:original]) if thumbnail.queued_for_write.key?(:original)
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meta
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end
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def image_geometry(file)
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width, height = FastImage.size(file.path)
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return {} if width.nil?
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{
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width: width,
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height: height,
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size: "#{width}x#{height}",
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aspect: width.to_f / height,
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}
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end
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def video_metadata(file)
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movie = ffmpeg_data(file.path)
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return {} unless movie.valid?
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{
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width: movie.width,
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height: movie.height,
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frame_rate: movie.frame_rate,
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duration: movie.duration,
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bitrate: movie.bitrate,
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}.compact
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end
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# We call this method about 3 different times on potentially different
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# paths but ultimately the same file, so it makes sense to memoize the
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# result while disregarding the path
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def ffmpeg_data(path = nil)
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@ffmpeg_data ||= VideoMetadataExtractor.new(path)
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end
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def enqueue_processing
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PostProcessMediaWorker.perform_async(id) if delay_processing?
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end
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def reset_parent_cache
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Rails.cache.delete("statuses/#{status_id}") if status_id.present?
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end
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end
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