Kieran
81d5efd4c1
* [WIP] started on codec parser * Added codec preferences to settings model * [WIP] added basic codec preference fields to settings form * Hooked up the backend portion of the codec preference work * Added codec settings to frontend * Ensured you can remove codec data
83 lines
2.0 KiB
Elixir
83 lines
2.0 KiB
Elixir
defmodule Pinchflat.Downloading.CodecParser do
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@moduledoc """
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Functions for generating yt-dlp codec strings
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"""
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alias Pinchflat.Settings
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@doc """
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Generate a video codec string based on the value of the video_codec_preference setting.
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Returns binary()
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"""
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def generate_vcodec_string_from_settings do
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generate_vcodec_string(Settings.get!(:video_codec_preference))
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end
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@doc """
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Generate an audio codec string based on the value of the audio_codec_preference setting.
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Returns binary()
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"""
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def generate_acodec_string_from_settings do
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generate_acodec_string(Settings.get!(:audio_codec_preference))
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end
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@doc """
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Generate a video codec string from a list of video codecs.
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If the list is nil or empty, the default video codec is AVC.
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Returns binary()
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"""
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def generate_vcodec_string(nil), do: "bestvideo[vcodec~='^avc']/bestvideo"
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def generate_vcodec_string([]), do: generate_vcodec_string(nil)
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def generate_vcodec_string(video_codecs) do
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video_codecs
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|> Enum.map(&video_codec_map()[&1])
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|> Enum.reject(&is_nil/1)
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|> Enum.map(&"bestvideo[vcodec~='^#{&1}']")
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|> Enum.concat(["bestvideo"])
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|> Enum.join("/")
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end
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@doc """
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Generate an audio codec string from a list of audio codecs.
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If the list is nil or empty, the default audio codec is MP4A.
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Returns binary()
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"""
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def generate_acodec_string(nil), do: "bestaudio[acodec~='^mp4a']/bestaudio"
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def generate_acodec_string([]), do: generate_acodec_string(nil)
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def generate_acodec_string(audio_codecs) do
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audio_codecs
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|> Enum.map(&audio_codec_map()[&1])
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|> Enum.reject(&is_nil/1)
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|> Enum.map(&"bestaudio[acodec~='^#{&1}']")
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|> Enum.concat(["bestaudio"])
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|> Enum.join("/")
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end
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@doc false
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def video_codec_map do
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%{
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"av01" => "av01",
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"avc" => "avc",
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"vp9" => "vp0?9"
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}
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end
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@doc false
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def audio_codec_map do
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%{
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"aac" => "aac",
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"mp4a" => "mp4a",
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"mp3" => "mp3",
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"opus" => "opus"
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}
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end
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end
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