├── .github
    └── README.md
├── LICENSE.md
└── persist-properties.lua


/.github/README.md:
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1 | # persist-properties
2 | 
3 | Lua script for [mpv](https://mpv.io/) to keep selected values like volume between player sessions.
4 | 
5 | An example configuration _(script-opts/persist_properties.conf)_ :
6 | ```
7 | properties=volume,sub-scale
8 | ```


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/LICENSE.md:
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 1 | MIT License
 2 | 
 3 | Copyright (c) 2022 d87
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


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/persist-properties.lua:
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  1 | -- Script home: https://github.com/d87/mpv-persist-properties
  2 | local utils = require "mp.utils"
  3 | local msg = require "mp.msg"
  4 | 
  5 | local opts = {
  6 |     properties = "volume,sub-scale",
  7 | }
  8 | (require 'mp.options').read_options(opts, "persist_properties")
  9 | 
 10 | local CONFIG_ROOT = (os.getenv('APPDATA') or os.getenv('HOME')..'/.config')..'/mpv/'
 11 | if not utils.file_info(CONFIG_ROOT) then
 12 |     -- On Windows if using portable_config dir, APPDATA mpv folder isn't auto-created
 13 |     -- In more recent mpv versions there's a mp.get_script_directory function, but i'm not using it for compatiblity
 14 |     local mpv_conf_path = mp.find_config_file("scripts") -- finds where the scripts folder is located
 15 |     local mpv_conf_dir = utils.split_path(mpv_conf_path)
 16 |     CONFIG_ROOT = mpv_conf_dir
 17 | end
 18 | local PCONFIG = CONFIG_ROOT..'persistent_config.json';
 19 | 
 20 | local function split(input)
 21 |     local ret = {}
 22 |     for str in string.gmatch(input, "([^,]+)") do
 23 |         table.insert(ret, str)
 24 |     end
 25 |     return ret
 26 | end
 27 | local persisted_properties = split(opts.properties)
 28 | 
 29 | local print = function(...)
 30 |     -- return msg.log("info", ...)
 31 | end
 32 | 
 33 | -- print("Config Root is "..CONFIG_ROOT)
 34 | 
 35 | local isInitialized = false
 36 | 
 37 | local properties
 38 | 
 39 | local function load_config(file)
 40 |     local f = io.open(file, "r")
 41 |     if f then
 42 |         local jsonString = f:read()
 43 |         f:close()
 44 | 
 45 |         if jsonString == nil then
 46 |             return {}
 47 |         end
 48 | 
 49 |         local props = utils.parse_json(jsonString)
 50 |         if props then
 51 |             return props
 52 |         end
 53 |     end
 54 |     return {}
 55 | end
 56 | 
 57 | local function save_config(file, properties)
 58 |     local serialized_props = utils.format_json(properties)
 59 | 
 60 |     local f = io.open(file, 'w+')
 61 |     if f then
 62 |         f:write(serialized_props)
 63 |         f:close()
 64 |     else
 65 |         msg.log("error", string.format("Couldn't open file: %s", file))
 66 |     end
 67 | end
 68 | 
 69 | local save_timer = nil
 70 | local got_unsaved_changed = false
 71 | 
 72 | local function onInitialLoad()
 73 |     properties = load_config(PCONFIG)
 74 | 
 75 |     for i, property in ipairs(persisted_properties) do
 76 |         local name = property
 77 |         local value = properties[name]
 78 |         if value ~= nil then
 79 |             mp.set_property_native(name, value)
 80 |         end
 81 |     end
 82 | 
 83 |     for i, property in ipairs(persisted_properties) do
 84 |         local property_type = nil
 85 |         mp.observe_property(property, property_type, function(name)
 86 |             if isInitialized then
 87 |                 local value = mp.get_property_native(name)
 88 |                 -- print(string.format("%s changed to %s at %s", name, value,  os.time()))
 89 | 
 90 |                 properties[name] = value
 91 | 
 92 |                 if save_timer then
 93 |                     save_timer:kill()
 94 |                     save_timer:resume()
 95 |                     got_unsaved_changed = true
 96 |                 else
 97 |                     save_timer = mp.add_timeout(5, function()
 98 |                         save_config(PCONFIG, properties)
 99 |                         got_unsaved_changed = false
100 |                     end)
101 |                 end
102 |             end
103 |         end)
104 |     end
105 | 
106 |     isInitialized = true
107 | end
108 | 
109 | onInitialLoad()
110 | mp.register_event("shutdown", function()
111 |     if got_unsaved_changed then
112 |         save_config(PCONFIG, properties)
113 |     end
114 | end)
115 | 


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