Refactor structure of caption.cr
Rename CaptionsMetadata to Metadata Nest Metadata under Captions Unnest LANGUAGES constant from Metadata to main Captions module
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syeopite
parent
3509752b79
commit
1f7592e599
5 changed files with 90 additions and 88 deletions
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@ -7,7 +7,7 @@ module Invidious::Frontend::WatchPage
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getter full_videos : Array(Hash(String, JSON::Any))
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getter video_streams : Array(Hash(String, JSON::Any))
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getter audio_streams : Array(Hash(String, JSON::Any))
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getter captions : Array(Invidious::Videos::CaptionMetadata)
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getter captions : Array(Invidious::Videos::Captions::Metadata)
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def initialize(
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@full_videos,
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@ -24,7 +24,7 @@ struct Video
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property updated : Time
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@[DB::Field(ignore: true)]
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@captions = [] of Invidious::Videos::CaptionMetadata
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@captions = [] of Invidious::Videos::Captions::Metadata
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@[DB::Field(ignore: true)]
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property adaptive_fmts : Array(Hash(String, JSON::Any))?
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@ -215,9 +215,9 @@ struct Video
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keywords.includes? "YouTube Red"
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end
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def captions : Array(Invidious::Videos::CaptionMetadata)
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def captions : Array(Invidious::Videos::Captions::Metadata)
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if @captions.empty? && @info.has_key?("captions")
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@captions = Invidious::Videos::CaptionMetadata.from_yt_json(info["captions"])
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@captions = Invidious::Videos::Captions::Metadata.from_yt_json(info["captions"])
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end
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return @captions
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@ -1,107 +1,109 @@
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require "json"
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module Invidious::Videos
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struct CaptionMetadata
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property name : String
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property language_code : String
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property base_url : String
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module Captions
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struct Metadata
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property name : String
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property language_code : String
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property base_url : String
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property auto_generated : Bool
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property auto_generated : Bool
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def initialize(@name, @language_code, @base_url, @auto_generated)
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end
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# Parse the JSON structure from Youtube
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def self.from_yt_json(container : JSON::Any) : Array(CaptionMetadata)
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caption_tracks = container
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.dig?("playerCaptionsTracklistRenderer", "captionTracks")
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.try &.as_a
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captions_list = [] of CaptionMetadata
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return captions_list if caption_tracks.nil?
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caption_tracks.each do |caption|
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name = caption["name"]["simpleText"]? || caption["name"]["runs"][0]["text"]
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name = name.to_s.split(" - ")[0]
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language_code = caption["languageCode"].to_s
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base_url = caption["baseUrl"].to_s
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auto_generated = false
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if caption["kind"]? && caption["kind"] == "asr"
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auto_generated = true
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end
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captions_list << CaptionMetadata.new(name, language_code, base_url, auto_generated)
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def initialize(@name, @language_code, @base_url, @auto_generated)
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end
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return captions_list
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end
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# Parse the JSON structure from Youtube
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def self.from_yt_json(container : JSON::Any) : Array(Captions::Metadata)
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caption_tracks = container
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.dig?("playerCaptionsTracklistRenderer", "captionTracks")
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.try &.as_a
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def timedtext_to_vtt(timedtext : String, tlang = nil) : String
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# In the future, we could just directly work with the url. This is more of a POC
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cues = [] of XML::Node
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tree = XML.parse(timedtext)
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tree = tree.children.first
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captions_list = [] of Captions::Metadata
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return captions_list if caption_tracks.nil?
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tree.children.each do |item|
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if item.name == "body"
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item.children.each do |cue|
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if cue.name == "p" && !(cue.children.size == 1 && cue.children[0].content == "\n")
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cues << cue
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caption_tracks.each do |caption|
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name = caption["name"]["simpleText"]? || caption["name"]["runs"][0]["text"]
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name = name.to_s.split(" - ")[0]
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language_code = caption["languageCode"].to_s
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base_url = caption["baseUrl"].to_s
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auto_generated = false
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if caption["kind"]? && caption["kind"] == "asr"
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auto_generated = true
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end
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captions_list << Captions::Metadata.new(name, language_code, base_url, auto_generated)
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end
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return captions_list
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end
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def timedtext_to_vtt(timedtext : String, tlang = nil) : String
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# In the future, we could just directly work with the url. This is more of a POC
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cues = [] of XML::Node
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tree = XML.parse(timedtext)
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tree = tree.children.first
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tree.children.each do |item|
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if item.name == "body"
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item.children.each do |cue|
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if cue.name == "p" && !(cue.children.size == 1 && cue.children[0].content == "\n")
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cues << cue
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end
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end
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break
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end
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break
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end
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end
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result = String.build do |result|
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result << <<-END_VTT
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WEBVTT
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Kind: captions
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Language: #{tlang || @language_code}
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result = String.build do |result|
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result << <<-END_VTT
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WEBVTT
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Kind: captions
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Language: #{tlang || @language_code}
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END_VTT
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END_VTT
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result << "\n\n"
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result << "\n\n"
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cues.each_with_index do |node, i|
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start_time = node["t"].to_f.milliseconds
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cues.each_with_index do |node, i|
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start_time = node["t"].to_f.milliseconds
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duration = node["d"]?.try &.to_f.milliseconds
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duration = node["d"]?.try &.to_f.milliseconds
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duration ||= start_time
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duration ||= start_time
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if cues.size > i + 1
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end_time = cues[i + 1]["t"].to_f.milliseconds
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else
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end_time = start_time + duration
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if cues.size > i + 1
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end_time = cues[i + 1]["t"].to_f.milliseconds
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else
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end_time = start_time + duration
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end
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# start_time
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result << start_time.hours.to_s.rjust(2, '0')
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result << ':' << start_time.minutes.to_s.rjust(2, '0')
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result << ':' << start_time.seconds.to_s.rjust(2, '0')
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result << '.' << start_time.milliseconds.to_s.rjust(3, '0')
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result << " --> "
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# end_time
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result << end_time.hours.to_s.rjust(2, '0')
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result << ':' << end_time.minutes.to_s.rjust(2, '0')
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result << ':' << end_time.seconds.to_s.rjust(2, '0')
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result << '.' << end_time.milliseconds.to_s.rjust(3, '0')
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result << "\n"
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node.children.each do |s|
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result << s.content
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end
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result << "\n"
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result << "\n"
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end
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# start_time
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result << start_time.hours.to_s.rjust(2, '0')
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result << ':' << start_time.minutes.to_s.rjust(2, '0')
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result << ':' << start_time.seconds.to_s.rjust(2, '0')
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result << '.' << start_time.milliseconds.to_s.rjust(3, '0')
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result << " --> "
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# end_time
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result << end_time.hours.to_s.rjust(2, '0')
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result << ':' << end_time.minutes.to_s.rjust(2, '0')
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result << ':' << end_time.seconds.to_s.rjust(2, '0')
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result << '.' << end_time.milliseconds.to_s.rjust(3, '0')
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result << "\n"
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node.children.each do |s|
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result << s.content
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end
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result << "\n"
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result << "\n"
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end
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return result
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end
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return result
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end
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# List of all caption languages available on Youtube.
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@ -37,7 +37,7 @@ module Invidious::Videos
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# Convert into array of TranscriptLine
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lines = self.parse(initial_data)
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# Taken from Invidious::Videos::CaptionMetadata.timedtext_to_vtt()
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# Taken from Invidious::Videos::Captions::Metadata.timedtext_to_vtt()
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vtt = String.build do |vtt|
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vtt << <<-END_VTT
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WEBVTT
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@ -89,7 +89,7 @@
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<label for="captions[0]"><%= translate(locale, "preferences_captions_label") %></label>
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<% preferences.captions.each_with_index do |caption, index| %>
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<select class="pure-u-1-6" name="captions[<%= index %>]" id="captions[<%= index %>]">
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<% Invidious::Videos::CaptionMetadata::LANGUAGES.each do |option| %>
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<% Invidious::Videos::Captions::LANGUAGES.each do |option| %>
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<option value="<%= option %>" <% if preferences.captions[index] == option %> selected <% end %>><%= translate(locale, option.blank? ? "none" : option) %></option>
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<% end %>
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</select>
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