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--[[
* chapter-make-read.lua v.2025-03-01
*
* AUTHORS: dyphire
* License: MIT
* link: https://github.com/dyphire/mpv-scripts
--]]
--[[
Copyright (c) 2023 dyphire <qimoge@gmail.com>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
--]]
-- Implementation read and automatically load the namesake external chapter file.
-- The external chapter files should conform to the following formats.
-- Note: The Timestamps should use the 12-bit format of 'hh:mm:ss.sss'.
-- Note: The file encoding should be UTF-8 and the linebreak should be Unix(LF).
-- Note: The script also supports reading OGM format and MediaInfo format in addition to the following formats.
--[[
00:00:00.000 A part
00:00:40.312 OP
00:02:00.873 B part
00:10:44.269 C part
00:22:40.146 ED
--]]
-- This script also supports manually load/refresh,marks,edits,remove and creates external chapter files, usage:
-- Note: It can also be used to export the existing chapter information of the playback file.
-- add bindings to input.conf:
-- key script-message-to chapter_make_read load_chapter
-- key script-message-to chapter_make_read create_chapter
-- key script-message-to chapter_make_read edit_chapter
-- key script-message-to chapter_make_read remove_chapter
-- key script-message-to chapter_make_read write_chapter chp
-- key script-message-to chapter_make_read write_chapter ogm
local msg = require 'mp.msg'
local utils = require 'mp.utils'
local options = require "mp.options"
local o = {
autoload = true,
autosave = false,
force_overwrite = false,
-- Specifies the extension of the external chapter file.
chapter_file_ext = ".chp",
-- Select whether the external chapter file needs to match the extension of the source file.
basename_with_ext = true,
-- Specifies the subpath of the same directory as the playback file as the external chapter file path.
-- Note: The external chapter file is read from the subdirectory first.
-- If the file does not exist, it will next be read from the same directory as the playback file.
external_chapter_subpath = "chapters",
-- save all chapter files in a single global directory
global_chapters = false,
global_chapters_dir = "~~/chapters",
-- hash works only in global_chapters_dir
hash = false,
-- ask for title or leave it empty
ask_for_title = true,
-- placeholder when asking for title of a new chapter
placeholder_title = "Chapter ",
-- pause the playback when asking for chapter title
pause_on_input = true,
}
options.read_options(o)
local input_loaded, input = pcall(require, "mp.input")
-- Requires: https://github.com/CogentRedTester/mpv-user-input
local user_input_loaded, user_input = pcall(require, "user-input-module")
local path = nil
local dir = nil
local fname = nil
local chapter_fullpath = nil
local all_chapters = {}
local chapter_count = 0
local chapters_modified = false
local paused = false
local protocol = false
local function is_protocol(path)
return type(path) == 'string' and (path:find('^%a[%w.+-]-://') ~= nil or path:find('^%a[%w.+-]-:%?') ~= nil)
end
function url_decode(str)
local function hex_to_char(x)
return string.char(tonumber(x, 16))
end
if str ~= nil then
str = str:gsub('^%a[%a%d-_]+://', '')
:gsub('^%a[%a%d-_]+:\\?', '')
:gsub('%%(%x%x)', hex_to_char)
if str:find('://localhost:?') then
str = str:gsub('^.*/', '')
end
str = str:gsub('[\\/:%?]*', '')
return str
end
end
--create global_chapters_dir if it doesn't exist
local global_chapters_dir = mp.command_native({ "expand-path", o.global_chapters_dir })
if global_chapters_dir and global_chapters_dir ~= '' then
local meta = utils.file_info(global_chapters_dir)
if not meta or not meta.is_dir then
local is_windows = package.config:sub(1, 1) == "\\"
local windows_args = { 'powershell', '-NoProfile', '-Command', 'mkdir', string.format("\"%s\"", global_chapters_dir) }
local unix_args = { 'mkdir', '-p', global_chapters_dir }
local args = is_windows and windows_args or unix_args
local res = mp.command_native({ name = "subprocess", capture_stdout = true, playback_only = false, args = args })
if res.status ~= 0 then
msg.error("Failed to create global_chapters_dir save directory " .. global_chapters_dir ..
". Error: " .. (res.error or "unknown"))
return
end
end
end
local function read_chapter(func)
local meta = utils.file_info(chapter_fullpath)
if not meta or not meta.is_file then return end
local f = io.open(chapter_fullpath, "r")
if not f then return end
local contents = {}
for line in f:lines() do
table.insert(contents, (func(line)))
end
f:close()
return contents
end
local function read_chapter_table()
local line_pos = 0
return read_chapter(function(line)
local h, m, s, t, n, l
local thin_space = string.char(0xE2, 0x80, 0x89)
local line = line:gsub(thin_space, " ")
if line:match("^%d+:%d+:%d+") ~= nil then
h, m, s = line:match("^(%d+):(%d+):(%d+[,%.]?%d+)")
s = s:gsub(',', '.')
t = h * 3600 + m * 60 + s
if line:match("^%d+:%d+:%d+[,%.]?%d+[,%s].*") ~= nil then
n = line:match("^%d+:%d+:%d+[,%.]?%d+[,%s](.*)")
n = n:gsub(":%s%a?%a?:", "")
:gsub("^%s*(.-)%s*$", "%1")
end
l = line
line_pos = line_pos + 1
elseif line:match("^%d+:%d+[,%.]?%d+[,%s].*") ~= nil then
m, s = line:match("^(%d+):(%d+[,%.]?%d+)")
s = s:gsub(',', '.')
t = m * 60 + s
if line:match("^%d+:%d+[,%.]?%d+[,%s].*") ~= nil then
n = line:match("^%d+:%d+[,%.]?%d+[,%s](.*)")
n = n:gsub(":%s%a?%a?:", "")
:gsub("^%s*(.-)%s*$", "%1")
end
l = line
line_pos = line_pos + 1
elseif line:match("^CHAPTER%d+=%d+:%d+:%d+") ~= nil then
h, m, s = line:match("^CHAPTER%d+=(%d+):(%d+):(%d+[,%.]?%d+)")
s = s:gsub(',', '.')
t = h * 3600 + m * 60 + s
l = line
line_pos = line_pos + 1
elseif line:match("^CHAPTER%d+NAME=.*") ~= nil then
n = line:gsub("^CHAPTER%d+NAME=", "")
n = n:gsub("^%s*(.-)%s*$", "%1")
l = line
line_pos = line_pos + 1
else
return
end
return { found_title = n, found_time = t, found_line = l }
end)
end
local function refresh_globals()
path = mp.get_property("path")
if path then
protocol = is_protocol(path)
dir = utils.split_path(path)
end
if protocol then
fname = url_decode(mp.get_property("media-title"))
elseif o.basename_with_ext then
fname = mp.get_property("filename")
else
fname = mp.get_property("filename/no-ext")
end
all_chapters = mp.get_property_native("chapter-list")
chapter_count = mp.get_property_number("chapter-list/count")
end
local function format_time(seconds)
local result = ""
local hours, mins, secs, msecs
if seconds <= 0 then
return "00:00:00.000";
else
hours = string.format("%02.f", math.floor(seconds / 3600))
mins = string.format("%02.f", math.floor(seconds / 60 - (hours * 60)))
secs = string.format("%02.f", math.floor(seconds - hours * 60 * 60 - mins * 60))
msecs = string.format("%03.f", seconds * 1000 - hours * 60 * 60 * 1000 - mins * 60 * 1000 - secs * 1000)
result = hours .. ":" .. mins .. ":" .. secs .. "." .. msecs
end
return result
end
-- for unix use only
-- returns a table of command path and varargs, or nil if command was not found
local function command_exists(command, ...)
msg.debug("looking for command:", command)
-- msg.debug("args:", )
local process = mp.command_native({
name = "subprocess",
capture_stdout = true,
capture_stderr = true,
playback_only = false,
args = {"sh", "-c", "command -v -- " .. command}
})
if process.status == 0 then
local command_path = process.stdout:gsub("\n", "")
msg.debug("command found:", command_path)
return {command_path, ...}
else
msg.debug("command not found:", command)
return nil
end
end
-- returns md5 hash of the full path of the current media file
local function hash(path)
if path == nil then
msg.debug("something is wrong with the path, can't get full_path, can't hash it")
return
end
msg.debug("hashing:", path)
local cmd = {
name = 'subprocess',
capture_stdout = true,
playback_only = false,
}
local args = nil
local is_unix = package.config:sub(1,1) == "/"
if is_unix then
local md5 = command_exists("md5sum") or command_exists("md5") or command_exists("openssl", "md5 | cut -d ' ' -f 2")
if md5 == nil then
msg.warn("no md5 command found, can't generate hash")
return
end
md5 = table.concat(md5, " ")
cmd["stdin_data"] = path
args = {"sh", "-c", md5 .. " | cut -d ' ' -f 1 | tr '[:lower:]' '[:upper:]'" }
else --windows
-- https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/get-filehash?view=powershell-7.3
local hash_command = [[
$s = [System.IO.MemoryStream]::new();
$w = [System.IO.StreamWriter]::new($s);
$w.write(']] .. path .. [[');
$w.Flush();
$s.Position = 0;
Get-FileHash -Algorithm MD5 -InputStream $s | Select-Object -ExpandProperty Hash
]]
args = {"powershell", "-NoProfile", "-Command", hash_command}
end
cmd["args"] = args
msg.debug("hash cmd:", utils.to_string(cmd))
local process = mp.command_native(cmd)
if process.status == 0 then
local hash = process.stdout:gsub("%s+", "")
msg.debug("hash:", hash)
return hash
else
msg.warn("hash function failed")
return
end
end
local function get_chapter_filename(path)
name = hash(path)
if name == nil then
msg.warn("hash function failed, fallback to filename")
name = fname
end
return name
end
local function mark_chapter(force_overwrite)
refresh_globals()
if not path then return end
local chapter_index = 0
local chapters_time = {}
local chapters_title = {}
local fpath = dir
if protocol then
fpath = global_chapters_dir
if o.hash then fname = get_chapter_filename(path) end
elseif o.external_chapter_subpath ~= '' then
fpath = utils.join_path(dir, o.external_chapter_subpath)
local meta = utils.file_info(fpath)
if not meta or not meta.is_dir then
fpath = dir
end
end
if o.global_chapters and global_chapters_dir and global_chapters_dir ~= '' and not protocol then
fpath = global_chapters_dir
local meta = utils.file_info(fpath)
if meta and meta.is_dir then
if o.hash then
fname = get_chapter_filename(path)
end
end
end
local chapter_filename = fname .. o.chapter_file_ext
chapter_fullpath = utils.join_path(fpath, chapter_filename)
local fmeta = utils.file_info(chapter_fullpath)
if (not fmeta or not fmeta.is_file) and fpath ~= dir and not protocol then
if o.basename_with_ext then
fname = mp.get_property("filename")
else
fname = mp.get_property("filename/no-ext")
end
chapter_filename = fname .. o.chapter_file_ext
chapter_fullpath = utils.join_path(dir, chapter_filename)
end
local list_contents = read_chapter_table()
if not list_contents then return end
for i = 1, #list_contents do
local chapter_time = tonumber(list_contents[i].found_time)
if chapter_time ~= nil and chapter_time >= 0 then
table.insert(chapters_time, chapter_time)
end
if list_contents[i].found_title ~= nil then
table.insert(chapters_title, list_contents[i].found_title)
end
end
if not chapters_time[1] then return end
table.sort(chapters_time, function(a, b) return a < b end)
if force_overwrite then all_chapters = {} end
for i = 1, #chapters_time do
chapter_index = chapter_index + 1
all_chapters[chapter_index] = {
title = chapters_title[i] or ("Chapter " .. string.format("%02.f", chapter_index)),
time = chapters_time[i]
}
end
table.sort(all_chapters, function(a, b) return a['time'] < b['time'] end)
mp.set_property_native("chapter-list", all_chapters)
msg.info("load external chapter file successful: " .. chapter_filename)
end
local function change_chapter_list(chapter_tltle, chapter_index)
local chapter_list = mp.get_property_native("chapter-list")
if chapter_index > mp.get_property_number("chapter-list/count") then
msg.warn("can't set chapter title")
return
end
chapter_list[chapter_index].title = chapter_tltle
mp.set_property_native("chapter-list", chapter_list)
end
local function change_title_callback(user_input, err, chapter_index)
if user_input == nil or err ~= nil then
if paused then return elseif o.pause_on_input then mp.set_property_native("pause", false) end
msg.warn("no chapter title provided:", err)
return
end
change_chapter_list(user_input, chapter_index)
if paused then return elseif o.pause_on_input then mp.set_property_native("pause", false) end
chapters_modified = true
end
local function input_title(default_input, cursor_pos, chapter_index)
input.get({
prompt = 'Chapter title:',
default_text = default_input,
cursor_position = cursor_pos,
submit = function(text)
input.terminate()
change_chapter_list(text, chapter_index)
end,
closed = function()
if paused then return elseif o.pause_on_input then mp.set_property_native("pause", false) end
end
})
end
local function input_choice(title, chapter_index)
if not input_loaded and not user_input_loaded then
msg.error("no mpv-user-input, can't get user input, install: https://github.com/CogentRedTester/mpv-user-input")
return
end
if input_loaded then
input_title(title, #title + 1, chapter_index)
elseif user_input_loaded then
-- ask user for chapter title
-- (+1 because mpv indexes from 0, lua from 1)
user_input.get_user_input(change_title_callback, {
request_text = "Chapter title:",
default_input = title,
cursor_pos = #title + 1,
}, chapter_index)
end
end
local function create_chapter()
refresh_globals()
if not path then return end
local time_pos = mp.get_property_number("time-pos")
local time_pos_osd = mp.get_property_osd("time-pos/full")
local current_chapter = mp.get_property_number("chapter")
mp.osd_message(time_pos_osd, 1)
if chapter_count == 0 then
all_chapters[1] = {
title = o.placeholder_title .. "01",
time = time_pos
}
-- We just set it to zero here so when we add 1 later it ends up as 1
-- otherwise it's probably "nil"
current_chapter = 0
-- note that mpv will treat the beginning of the file as all_chapters[0] when using pageup/pagedown
-- so we don't actually have to worry if the file doesn't start with a chapter
else
-- to insert a chapter we have to increase the index on all subsequent chapters
-- otherwise we'll end up with duplicate chapter IDs which will confuse mpv
-- +2 looks weird, but remember mpv indexes at 0 and lua indexes at 1
-- adding two will turn "current chapter" from mpv notation into "next chapter" from lua's notation
-- count down because these areas of memory overlap
for i = chapter_count, current_chapter + 2, -1 do
all_chapters[i + 1] = all_chapters[i]
end
all_chapters[current_chapter + 2] = {
title = o.placeholder_title .. string.format("%02.f", current_chapter + 2),
time = time_pos
}
end
mp.set_property_native("chapter-list", all_chapters)
mp.set_property_number("chapter", current_chapter + 1)
chapters_modified = true
if o.ask_for_title then
local chapter_index = mp.get_property_number("chapter") + 1
local title = o.placeholder_title .. string.format("%02.f", chapter_index)
input_choice(title, chapter_index)
if o.pause_on_input then
paused = mp.get_property_native("pause")
mp.set_property_bool("pause", true)
-- FIXME: for whatever reason osd gets hidden when we pause the
-- playback like that, workaround to make input prompt appear
-- right away without requiring mouse or keyboard action
mp.osd_message(" ", 0.1)
end
end
end
local function edit_chapter()
local chapter_index = mp.get_property_number("chapter") + 1
local chapter_list = mp.get_property_native("chapter-list")
local title = chapter_list[chapter_index + 1].title
if chapter_index == nil or chapter_index == -1 then
msg.verbose("no chapter selected, nothing to edit")
return
end
input_choice(title, chapter_index)
if o.pause_on_input then
paused = mp.get_property_native("pause")
mp.set_property_bool("pause", true)
-- FIXME: for whatever reason osd gets hidden when we pause the
-- playback like that, workaround to make input prompt appear
-- right away without requiring mouse or keyboard action
mp.osd_message(" ", 0.1)
end
end
local function remove_chapter()
local chapter_count = mp.get_property_number("chapter-list/count")
if chapter_count < 1 then
msg.verbose("no chapters to remove")
return
end
local chapter_list = mp.get_property_native("chapter-list")
-- +1 because mpv indexes from 0, lua from 1
local current_chapter = mp.get_property_number("chapter") + 1
table.remove(chapter_list, current_chapter)
msg.debug("removing chapter", current_chapter)
mp.set_property_native("chapter-list", chapter_list)
chapters_modified = true
end
local function write_chapter(format, force_write)
refresh_globals()
if not path or chapter_count == 0 or (not chapters_modified and not force_write) then
msg.debug("nothing to write")
return
end
if o.global_chapters then dir = global_chapters_dir end
if o.hash and o.global_chapters then fname = get_chapter_filename(path) end
local out_path = utils.join_path(dir, fname .. o.chapter_file_ext)
local chapters = ""
local next_chapter = nil
for i = 1, chapter_count, 1 do
local current_chapter = all_chapters[i]
local time_pos = format_time(current_chapter.time)
if format == "ogm" then
next_chapter = "CHAPTER" .. string.format("%02.f", i) .. "=" .. time_pos .. "\n" ..
"CHAPTER" .. string.format("%02.f", i) .. "NAME=" .. current_chapter.title .. "\n"
elseif format == "chp" then
next_chapter = time_pos .. " " .. current_chapter.title .. "\n"
else
msg.warn("please specify the correct chapter format: chp/ogm.")
return
end
if i == 1 and (o.global_chapters or protocol) then
chapters = "# " .. path .. "\n\n" .. next_chapter
else
chapters = chapters .. next_chapter
end
end
local file = io.open(out_path, "w")
if file == nil then
dir = global_chapters_dir
fname = url_decode(mp.get_property("media-title"))
if o.hash then fname = get_chapter_filename(path) end
out_path = utils.join_path(dir, fname .. o.chapter_file_ext)
file = io.open(out_path, "w")
end
if file == nil then
mp.error("Could not open chapter file for writing.")
return
end
file:write(chapters)
file:close()
if not o.autosave then
mp.osd_message("Export chapter file to: " .. out_path, 3)
end
msg.info("Export chapter file to: " .. out_path)
end
-- HOOKS -----------------------------------------------------------------------
if o.autoload then
mp.add_hook("on_preloaded", 50, function()
if o.force_overwrite then
mark_chapter(true)
else
mark_chapter(false)
end
end)
end
if o.autosave then
mp.add_hook("on_unload", 50, function()
write_chapter("chp", false)
end)
end
if user_input_loaded and not input_loaded then
mp.add_hook("on_unload", 50, function() user_input.cancel_user_input() end)
end
mp.register_script_message("load_chapter", function() mark_chapter(true) end)
mp.register_script_message("create_chapter", create_chapter, { repeatable = true })
mp.register_script_message("remove_chapter", remove_chapter)
mp.register_script_message("edit_chapter", edit_chapter)
mp.register_script_message("write_chapter", function(format)
write_chapter(format, true)
end)