diff options
| -rw-r--r-- | app/models/concerns/attachmentable.rb | 2 | ||||
| -rw-r--r-- | app/models/media_attachment.rb | 32 | ||||
| -rw-r--r-- | lib/paperclip/gif_transcoder.rb | 101 | ||||
| -rw-r--r-- | lib/paperclip/video_transcoder.rb | 2 |
4 files changed, 127 insertions, 10 deletions
diff --git a/app/models/concerns/attachmentable.rb b/app/models/concerns/attachmentable.rb index c3c7c7a35..9b3ca9e3c 100644 --- a/app/models/concerns/attachmentable.rb +++ b/app/models/concerns/attachmentable.rb @@ -6,6 +6,7 @@ module Attachmentable extend ActiveSupport::Concern MAX_MATRIX_LIMIT = 16_777_216 # 4096x4096px or approx. 16MB + GIF_MATRIX_LIMIT = 921_600 # 1280x720px included do before_post_process :obfuscate_file_name @@ -43,6 +44,7 @@ module Attachmentable next if attachment.blank? || !/image.*/.match?(attachment.content_type) || attachment.queued_for_write[:original].blank? width, height = FastImage.size(attachment.queued_for_write[:original].path) + matrix_limit = attachment.content_type == 'image/gif' ? GIF_MATRIX_LIMIT : MAX_MATRIX_LIMIT raise Mastodon::DimensionsValidationError, "#{width}x#{height} images are not supported" if width.present? && height.present? && (width * height >= MAX_MATRIX_LIMIT) end diff --git a/app/models/media_attachment.rb b/app/models/media_attachment.rb index c23c8b294..d0b513793 100644 --- a/app/models/media_attachment.rb +++ b/app/models/media_attachment.rb @@ -82,6 +82,17 @@ class MediaAttachment < ApplicationRecord file_geometry_parser: FastGeometryParser, blurhash: BLURHASH_OPTIONS, }, + + original: { + keep_same_format: true, + convert_options: { + output: { + 'map_metadata' => '-1', + 'c:v' => 'copy', + 'c:a' => 'copy', + }, + }, + }, }.freeze AUDIO_STYLES = { @@ -103,13 +114,15 @@ class MediaAttachment < ApplicationRecord output: { 'loglevel' => 'fatal', 'movflags' => 'faststart', - 'pix_fmt' => 'yuv420p', - 'vf' => 'scale=\'trunc(iw/2)*2:trunc(ih/2)*2\'', - 'vsync' => 'cfr', - 'c:v' => 'h264', - 'maxrate' => '2M', - 'bufsize' => '2M', - 'crf' => 18, + 'pix_fmt' => 'yuv420p', + 'vf' => 'scale=\'trunc(iw/2)*2:trunc(ih/2)*2\'', + 'vsync' => 'cfr', + 'c:v' => 'h264', + 'maxrate' => '1300K', + 'bufsize' => '1300K', + 'frames:v' => 60 * 60 * 3, + 'crf' => 18, + 'map_metadata' => '-1', }, }, }.freeze @@ -119,7 +132,7 @@ class MediaAttachment < ApplicationRecord original: VIDEO_FORMAT, }.freeze - IMAGE_LIMIT = (ENV['MAX_IMAGE_SIZE'] || 8.megabytes).to_i + IMAGE_LIMIT = (ENV['MAX_IMAGE_SIZE'] || 10.megabytes).to_i VIDEO_LIMIT = (ENV['MAX_VIDEO_SIZE'] || 40.megabytes).to_i belongs_to :account, inverse_of: :media_attachments, optional: true @@ -283,7 +296,9 @@ class MediaAttachment < ApplicationRecord def set_meta meta = populate_meta + return if meta == {} + file.instance_write :meta, meta end @@ -326,6 +341,7 @@ class MediaAttachment < ApplicationRecord def reset_parent_cache return if status_id.nil? + Rails.cache.delete("statuses/#{status_id}") end end diff --git a/lib/paperclip/gif_transcoder.rb b/lib/paperclip/gif_transcoder.rb index cbab6fd99..64f12f963 100644 --- a/lib/paperclip/gif_transcoder.rb +++ b/lib/paperclip/gif_transcoder.rb @@ -1,5 +1,103 @@ # frozen_string_literal: true +class GifReader + attr_reader :animated + + EXTENSION_LABELS = [0xf9, 0x01, 0xff].freeze + GIF_HEADERS = %w(GIF87a GIF89a).freeze + + class GifReaderException; end + + class UnknownImageType < GifReaderException; end + + class CannotParseImage < GifReaderException; end + + def self.animated?(path) + new(path).animated + rescue GifReaderException + false + end + + def initialize(path, max_frames = 2) + @path = path + @nb_frames = 0 + + File.open(path, 'rb') do |s| + raise UnknownImageType unless GIF_HEADERS.include?(s.read(6)) + + # Skip to "packed byte" + s.seek(4, IO::SEEK_CUR) + + # "Packed byte" gives us the size of the GIF color table + packed_byte, = s.read(1).unpack('C') + + # Skip background color and aspect ratio + s.seek(2, IO::SEEK_CUR) + + if packed_byte & 0x80 != 0 + # GIF uses a global color table, skip it + s.seek(3 * (1 << ((packed_byte & 0x07) + 1)), IO::SEEK_CUR) + end + + # Now read data + while @nb_frames < max_frames + separator = s.read(1) + + case separator + when ',' # Image block + @nb_frames += 1 + + # Skip to "packed byte" + s.seek(8, IO::SEEK_CUR) + packed_byte, = s.read(1).unpack('C') + + if packed_byte & 0x80 != 0 + # Image uses a local color table, skip it + s.seek(3 * (1 << ((packed_byte & 0x07) + 1)), IO::SEEK_CUR) + end + + # Skip lzw min code size + raise InvalidValue unless s.read(1).unpack('C')[0] >= 2 + + # Skip image data sub-blocks + skip_sub_blocks!(s) + when '!' # Extension block + skip_extension_block!(s) + when ';' # Trailer + break + else + raise CannotParseImage + end + end + end + + @animated = @nb_frames > 1 + end + + private + + def skip_extension_block!(file) + if EXTENSION_LABELS.include?(file.read(1).unpack('C')[0]) + block_size, = file.read(1).unpack('C') + file.seek(block_size, IO::SEEK_CUR) + end + + # Read until extension block end marker + skip_sub_blocks!(file) + end + + # Skip sub-blocks up until block end marker + def skip_sub_blocks!(file) + loop do + size, = file.read(1).unpack('C') + + break if size.zero? + + file.seek(size, IO::SEEK_CUR) + end + end +end + module Paperclip # This transcoder is only to be used for the MediaAttachment model # to convert animated gifs to webm @@ -19,8 +117,7 @@ module Paperclip private def needs_convert? - num_frames = identify('-format %n :file', file: file.path).to_i - options[:style] == :original && num_frames > 1 + options[:style] == :original && GifReader.animated?(file.path) end end end diff --git a/lib/paperclip/video_transcoder.rb b/lib/paperclip/video_transcoder.rb index c3504c17c..66f7feda5 100644 --- a/lib/paperclip/video_transcoder.rb +++ b/lib/paperclip/video_transcoder.rb @@ -6,7 +6,9 @@ module Paperclip class VideoTranscoder < Paperclip::Processor def make meta = ::Av.cli.identify(@file.path) + attachment.instance.type = MediaAttachment.types[:gifv] unless meta[:audio_encode] + options[:format] = File.extname(attachment.instance.file_file_name)[1..-1] if options[:keep_same_format] Paperclip::Transcoder.make(file, options, attachment) end |