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-- This function formats the current timestamp in the [mm:ss.ms] format
function format_timestamp(seconds)
local minutes = math.floor(seconds / 60)
local seconds = seconds % 60
return string.format("[%02d:%05.2f]", minutes, seconds)
end
-- Get the user’s cache directory
local cache_dir = os.getenv("XDG_CACHE_HOME") or os.getenv("HOME") .. "/.cache"
-- This function writes the timestamp to the LRC file
function write_timestamp_to_lrc()
local filename = mp.get_property("path")
if not filename then
mp.msg.warn("No file currently playing.")
return
end
-- Extract metadata for artist, title, and album
local artist = mp.get_property("metadata/by-key/ARTIST", "Unknown Artist")
local title = mp.get_property("metadata/by-key/TITLE", "Unknown Title")
local album = mp.get_property("metadata/by-key/ALBUM", "Unknown Album")
-- Construct the lrc dir
local dir = cache_dir .. "/lyric/timed"
local lrc_filename = string.format("%s/%s - %s - %s.lrc", dir, artist, album, title)
-- Get current playback time
local current_time = mp.get_property_number("time-pos", 0)
local formatted_time = format_timestamp(current_time)
-- If the file does not exist, or is empty, create it and add metadata in the following format:
-- [ar: Chubby Checker oppure Beatles, The]
-- [al: Hits Of The 60's - Vol. 2 – Oldies]
-- [ti: Let's Twist Again]
-- [au: Written by Kal Mann / Dave Appell, 1961]
-- [length: 2:23]
local file = io.open(lrc_filename, "r+")
if not file then
file = io.open(lrc_filename, "w+")
end
-- read the file and check whether it only contains whitespace
local content = file:read("*all")
if content:match("^%s*$") then
file:write("[ar: " .. artist .. "]\n")
file:write("[al: " .. album .. "]\n")
file:write("[ti: " .. title .. "]\n")
local duration = mp.get_property_number("duration", 0)
local formatted_duration = string.format("%02d:%02d", math.floor(duration / 60), duration % 60)
file:write("[length: " .. formatted_duration .. "]\n")
file:write("\n")
end
file:close()
-- Append the timestamp to the LRC file
local file = io.open(lrc_filename, "a")
if file then
file:write(formatted_time .. "\n")
file:close()
mp.msg.info("Timestamp " .. formatted_time .. " added to " .. lrc_filename)
else
mp.msg.error("Failed to open " .. lrc_filename)
end
end
-- Bind Ctrl+l to the function that writes the timestamp
mp.add_key_binding("Ctrl+l", "insert_timestamp", write_timestamp_to_lrc)
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