donphan/app/models/media_attachment.rb

292 lines
7.6 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, :unknown, :audio]
IMAGE_FILE_EXTENSIONS = ['.jpg', '.jpeg', '.png', '.gif', '.webp'].freeze
VIDEO_FILE_EXTENSIONS = ['.webm', '.mp4', '.m4v', '.mov'].freeze
AUDIO_FILE_EXTENSIONS = ['.ogg', '.oga', '.mp3', '.wav', '.flac', '.opus'].freeze
IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif', 'image/webp'].freeze
VIDEO_MIME_TYPES = ['video/webm', 'video/mp4', 'video/quicktime', 'video/ogg'].freeze
VIDEO_CONVERTIBLE_MIME_TYPES = ['video/webm', 'video/quicktime'].freeze
AUDIO_MIME_TYPES = ['audio/wave', 'audio/wav', 'audio/x-wav', 'audio/x-pn-wave', 'audio/ogg', 'audio/mpeg', 'audio/mp3', 'audio/webm', 'audio/flac'].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
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
AUDIO_STYLES = {
original: {
format: 'mp3',
content_type: 'audio/mpeg',
convert_options: {
output: {
'q:a' => 2,
},
},
},
}.freeze
VIDEO_FORMAT = {
format: 'mp4',
content_type: 'video/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
VIDEO_CONVERTED_STYLES = {
small: VIDEO_STYLES[:small],
original: VIDEO_FORMAT,
}.freeze
IMAGE_LIMIT = 8.megabytes
VIDEO_LIMIT = 40.megabytes
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: :larger_media_format?
validates_attachment_size :file, less_than: VIDEO_LIMIT, if: :larger_media_format?
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 larger_media_format?
video? || gifv? || audio?
end
def audio_or_video?
audio? || video?
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
def supported_mime_types
IMAGE_MIME_TYPES + VIDEO_MIME_TYPES + AUDIO_MIME_TYPES
end
def supported_file_extensions
IMAGE_FILE_EXTENSIONS + VIDEO_FILE_EXTENSIONS + AUDIO_FILE_EXTENSIONS
end
private
def file_styles(f)
if f.instance.file_content_type == 'image/gif' || VIDEO_CONVERTIBLE_MIME_TYPES.include?(f.instance.file_content_type)
VIDEO_CONVERTED_STYLES
elsif IMAGE_MIME_TYPES.include?(f.instance.file_content_type)
IMAGE_STYLES
elsif VIDEO_MIME_TYPES.include?(f.instance.file_content_type)
VIDEO_STYLES
else
AUDIO_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, :type_corrector]
elsif AUDIO_MIME_TYPES.include?(f.file_content_type)
[:transcoder, :type_corrector]
else
[:lazy_thumbnail, :blurhash_transcoder, :type_corrector]
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 = begin
if VIDEO_MIME_TYPES.include?(file_content_type)
:video
elsif AUDIO_MIME_TYPES.include?(file_content_type)
:audio
else
:image
end
end
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,
}.compact
end
def reset_parent_cache
return if status_id.nil?
Rails.cache.delete("statuses/#{status_id}")
end
end