236 行
8.7 KiB
Crystal
236 行
8.7 KiB
Crystal
module Invidious::Routes::API::Manifest
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# /api/manifest/dash/id/:id
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def self.get_dash_video_id(env)
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env.response.headers.add("Access-Control-Allow-Origin", "*")
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env.response.content_type = "application/dash+xml"
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local = env.params.query["local"]?.try &.== "true"
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id = env.params.url["id"]
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region = env.params.query["region"]?
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# Since some implementations create playlists based on resolution regardless of different codecs,
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# we can opt to only add a source to a representation if it has a unique height within that representation
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unique_res = env.params.query["unique_res"]?.try { |q| (q == "true" || q == "1").to_unsafe }
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begin
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video = get_video(id, region: region)
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rescue ex : NotFoundException
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haltf env, status_code: 404
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rescue ex
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haltf env, status_code: 403
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end
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if dashmpd = video.dash_manifest_url
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manifest = YT_POOL.client &.get(URI.parse(dashmpd).request_target).body
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manifest = manifest.gsub(/<BaseURL>[^<]+<\/BaseURL>/) do |baseurl|
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url = baseurl.lchop("<BaseURL>")
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url = url.rchop("</BaseURL>")
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if local
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uri = URI.parse(url)
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url = "#{uri.request_target}host/#{uri.host}/"
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end
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"<BaseURL>#{url}</BaseURL>"
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end
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return manifest
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end
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adaptive_fmts = video.adaptive_fmts
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if local
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adaptive_fmts.each do |fmt|
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fmt["url"] = JSON::Any.new(URI.parse(fmt["url"].as_s).request_target)
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end
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end
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audio_streams = video.audio_streams.sort_by { |stream| {stream["bitrate"].as_i} }.reverse!
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video_streams = video.video_streams.sort_by { |stream| {stream["width"].as_i, stream["fps"].as_i} }.reverse!
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manifest = XML.build(indent: " ", encoding: "UTF-8") do |xml|
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xml.element("MPD", "xmlns": "urn:mpeg:dash:schema:mpd:2011",
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"profiles": "urn:mpeg:dash:profile:full:2011", minBufferTime: "PT1.5S", type: "static",
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mediaPresentationDuration: "PT#{video.length_seconds}S") do
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xml.element("Period") do
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i = 0
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{"audio/mp4"}.each do |mime_type|
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mime_streams = audio_streams.select { |stream| stream["mimeType"].as_s.starts_with? mime_type }
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next if mime_streams.empty?
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mime_streams.each do |fmt|
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# OTF streams aren't supported yet (See https://github.com/TeamNewPipe/NewPipe/issues/2415)
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next if !(fmt.has_key?("indexRange") && fmt.has_key?("initRange"))
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# Different representations of the same audio should be groupped into one AdaptationSet.
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# However, most players don't support auto quality switching, so we have to trick them
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# into providing a quality selector.
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# See https://github.com/iv-org/invidious/issues/3074 for more details.
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xml.element("AdaptationSet", id: i, mimeType: mime_type, startWithSAP: 1, subsegmentAlignment: true, label: fmt["bitrate"].to_s + "k") do
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codecs = fmt["mimeType"].as_s.split("codecs=")[1].strip('"')
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bandwidth = fmt["bitrate"].as_i
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itag = fmt["itag"].as_i
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url = fmt["url"].as_s
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xml.element("Role", schemeIdUri: "urn:mpeg:dash:role:2011", value: i == 0 ? "main" : "alternate")
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xml.element("Representation", id: fmt["itag"], codecs: codecs, bandwidth: bandwidth) do
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xml.element("AudioChannelConfiguration", schemeIdUri: "urn:mpeg:dash:23003:3:audio_channel_configuration:2011",
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value: "2")
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xml.element("BaseURL") { xml.text url }
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xml.element("SegmentBase", indexRange: "#{fmt["indexRange"]["start"]}-#{fmt["indexRange"]["end"]}") do
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xml.element("Initialization", range: "#{fmt["initRange"]["start"]}-#{fmt["initRange"]["end"]}")
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end
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end
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end
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i += 1
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end
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end
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potential_heights = {4320, 2160, 1440, 1080, 720, 480, 360, 240, 144}
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{"video/mp4"}.each do |mime_type|
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mime_streams = video_streams.select { |stream| stream["mimeType"].as_s.starts_with? mime_type }
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next if mime_streams.empty?
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heights = [] of Int32
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xml.element("AdaptationSet", id: i, mimeType: mime_type, startWithSAP: 1, subsegmentAlignment: true, scanType: "progressive") do
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mime_streams.each do |fmt|
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# OTF streams aren't supported yet (See https://github.com/TeamNewPipe/NewPipe/issues/2415)
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next if !(fmt.has_key?("indexRange") && fmt.has_key?("initRange"))
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codecs = fmt["mimeType"].as_s.split("codecs=")[1].strip('"')
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bandwidth = fmt["bitrate"].as_i
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itag = fmt["itag"].as_i
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url = fmt["url"].as_s
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width = fmt["width"].as_i
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height = fmt["height"].as_i
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# Resolutions reported by YouTube player (may not accurately reflect source)
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height = potential_heights.min_by { |x| (height - x).abs }
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next if unique_res && heights.includes? height
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heights << height
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xml.element("Representation", id: itag, codecs: codecs, width: width, height: height,
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startWithSAP: "1", maxPlayoutRate: "1",
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bandwidth: bandwidth, frameRate: fmt["fps"]) do
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xml.element("BaseURL") { xml.text url }
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xml.element("SegmentBase", indexRange: "#{fmt["indexRange"]["start"]}-#{fmt["indexRange"]["end"]}") do
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xml.element("Initialization", range: "#{fmt["initRange"]["start"]}-#{fmt["initRange"]["end"]}")
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end
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end
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end
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end
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i += 1
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end
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end
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end
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end
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return manifest
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end
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# /api/manifest/dash/id/videoplayback
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def self.get_dash_video_playback(env)
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env.response.headers.delete("Content-Type")
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env.response.headers["Access-Control-Allow-Origin"] = "*"
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env.redirect "/videoplayback?#{env.params.query}"
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end
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# /api/manifest/dash/id/videoplayback/*
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def self.get_dash_video_playback_greedy(env)
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env.response.headers.delete("Content-Type")
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env.response.headers["Access-Control-Allow-Origin"] = "*"
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env.redirect env.request.path.lchop("/api/manifest/dash/id")
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end
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# /api/manifest/dash/id/videoplayback && /api/manifest/dash/id/videoplayback/*
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def self.options_dash_video_playback(env)
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env.response.headers.delete("Content-Type")
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env.response.headers["Access-Control-Allow-Origin"] = "*"
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env.response.headers["Access-Control-Allow-Methods"] = "GET, OPTIONS"
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env.response.headers["Access-Control-Allow-Headers"] = "Content-Type, Range"
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end
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# /api/manifest/hls_playlist/*
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def self.get_hls_playlist(env)
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response = YT_POOL.client &.get(env.request.path)
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if response.status_code != 200
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haltf env, status_code: response.status_code
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end
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local = env.params.query["local"]?.try &.== "true"
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env.response.content_type = "application/x-mpegURL"
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env.response.headers.add("Access-Control-Allow-Origin", "*")
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manifest = response.body
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if local
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manifest = manifest.gsub(/^https:\/\/\w+---.{11}\.c\.youtube\.com[^\n]*/m) do |match|
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path = URI.parse(match).path
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path = path.lchop("/videoplayback/")
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path = path.rchop("/")
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path = path.gsub(/mime\/\w+\/\w+/) do |mimetype|
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mimetype = mimetype.split("/")
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mimetype[0] + "/" + mimetype[1] + "%2F" + mimetype[2]
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end
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path = path.split("/")
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raw_params = {} of String => Array(String)
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path.each_slice(2) do |pair|
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key, value = pair
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value = URI.decode_www_form(value)
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if raw_params[key]?
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raw_params[key] << value
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else
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raw_params[key] = [value]
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end
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end
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raw_params = HTTP::Params.new(raw_params)
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if fvip = raw_params["hls_chunk_host"].match(/r(?<fvip>\d+)---/)
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raw_params["fvip"] = fvip["fvip"]
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end
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raw_params["local"] = "true"
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"#{HOST_URL}/videoplayback?#{raw_params}"
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end
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end
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manifest
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end
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# /api/manifest/hls_variant/*
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def self.get_hls_variant(env)
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response = YT_POOL.client &.get(env.request.path)
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if response.status_code != 200
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haltf env, status_code: response.status_code
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end
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local = env.params.query["local"]?.try &.== "true"
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env.response.content_type = "application/x-mpegURL"
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env.response.headers.add("Access-Control-Allow-Origin", "*")
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manifest = response.body
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if local
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manifest = manifest.gsub("https://www.youtube.com", HOST_URL)
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manifest = manifest.gsub("index.m3u8", "index.m3u8?local=true")
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end
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manifest
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end
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end
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