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737 lines
22 KiB
737 lines
22 KiB
--[[
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Copyright (C) 2017 AMM
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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]]--
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--[[
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mpv_thumbnail_script.lua 0.4.2 - commit 682becf (branch master)
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https://github.com/TheAMM/mpv_thumbnail_script
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Built on 2024-04-06 15:30:02
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]]--
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local assdraw = require 'mp.assdraw'
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local msg = require 'mp.msg'
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local opt = require 'mp.options'
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local utils = require 'mp.utils'
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-- Determine platform --
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ON_WINDOWS = (package.config:sub(1,1) ~= '/')
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-- Some helper functions needed to parse the options --
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function isempty(v) return (v == false) or (v == nil) or (v == "") or (v == 0) or (type(v) == "table" and next(v) == nil) end
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function divmod (a, b)
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return math.floor(a / b), a % b
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end
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-- Better modulo
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function bmod( i, N )
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return (i % N + N) % N
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end
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function join_paths(...)
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local sep = ON_WINDOWS and "\\" or "/"
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local result = "";
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for i, p in pairs({...}) do
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if p ~= "" then
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if is_absolute_path(p) then
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result = p
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else
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result = (result ~= "") and (result:gsub("[\\"..sep.."]*$", "") .. sep .. p) or p
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end
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end
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end
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return result:gsub("[\\"..sep.."]*$", "")
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end
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-- /some/path/file.ext -> /some/path, file.ext
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function split_path( path )
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local sep = ON_WINDOWS and "\\" or "/"
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local first_index, last_index = path:find('^.*' .. sep)
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if last_index == nil then
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return "", path
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else
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local dir = path:sub(0, last_index-1)
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local file = path:sub(last_index+1, -1)
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return dir, file
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end
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end
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function is_absolute_path( path )
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local tmp, is_win = path:gsub("^[A-Z]:\\", "")
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local tmp, is_unix = path:gsub("^/", "")
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return (is_win > 0) or (is_unix > 0)
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end
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function Set(source)
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local set = {}
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for _, l in ipairs(source) do set[l] = true end
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return set
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end
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---------------------------
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-- More helper functions --
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---------------------------
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-- Removes all keys from a table, without destroying the reference to it
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function clear_table(target)
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for key, value in pairs(target) do
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target[key] = nil
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end
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end
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function shallow_copy(target)
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local copy = {}
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for k, v in pairs(target) do
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copy[k] = v
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end
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return copy
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end
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-- Rounds to given decimals. eg. round_dec(3.145, 0) => 3
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function round_dec(num, idp)
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local mult = 10^(idp or 0)
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return math.floor(num * mult + 0.5) / mult
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end
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function file_exists(name)
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local f = io.open(name, "rb")
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if f ~= nil then
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local ok, err, code = f:read(1)
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io.close(f)
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return code == nil
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else
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return false
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end
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end
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function path_exists(name)
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local f = io.open(name, "rb")
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if f ~= nil then
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io.close(f)
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return true
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else
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return false
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end
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end
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function create_directories(path)
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local cmd
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if ON_WINDOWS then
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cmd = { args = {"cmd", "/c", "mkdir", path} }
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else
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cmd = { args = {"mkdir", "-p", path} }
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end
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utils.subprocess(cmd)
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end
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-- Find an executable in PATH or CWD with the given name
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function find_executable(name)
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local delim = ON_WINDOWS and ";" or ":"
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local pwd = os.getenv("PWD") or utils.getcwd()
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local path = os.getenv("PATH")
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local env_path = pwd .. delim .. path -- Check CWD first
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local result, filename
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for path_dir in env_path:gmatch("[^"..delim.."]+") do
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filename = join_paths(path_dir, name)
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if file_exists(filename) then
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result = filename
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break
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end
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end
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return result
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end
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local ExecutableFinder = { path_cache = {} }
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-- Searches for an executable and caches the result if any
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function ExecutableFinder:get_executable_path( name, raw_name )
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name = ON_WINDOWS and not raw_name and (name .. ".exe") or name
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if self.path_cache[name] == nil then
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self.path_cache[name] = find_executable(name) or false
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end
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return self.path_cache[name]
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end
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-- Format seconds to HH.MM.SS.sss
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function format_time(seconds, sep, decimals)
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decimals = decimals == nil and 3 or decimals
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sep = sep and sep or "."
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local s = seconds
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local h, s = divmod(s, 60*60)
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local m, s = divmod(s, 60)
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local second_format = string.format("%%0%d.%df", 2+(decimals > 0 and decimals+1 or 0), decimals)
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return string.format("%02d"..sep.."%02d"..sep..second_format, h, m, s)
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end
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-- Format seconds to 1h 2m 3.4s
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function format_time_hms(seconds, sep, decimals, force_full)
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decimals = decimals == nil and 1 or decimals
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sep = sep ~= nil and sep or " "
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local s = seconds
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local h, s = divmod(s, 60*60)
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local m, s = divmod(s, 60)
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if force_full or h > 0 then
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return string.format("%dh"..sep.."%dm"..sep.."%." .. tostring(decimals) .. "fs", h, m, s)
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elseif m > 0 then
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return string.format("%dm"..sep.."%." .. tostring(decimals) .. "fs", m, s)
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else
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return string.format("%." .. tostring(decimals) .. "fs", s)
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end
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end
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-- Writes text on OSD and console
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function log_info(txt, timeout)
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timeout = timeout or 1.5
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msg.info(txt)
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mp.osd_message(txt, timeout)
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end
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-- Join table items, ala ({"a", "b", "c"}, "=", "-", ", ") => "=a-, =b-, =c-"
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function join_table(source, before, after, sep)
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before = before or ""
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after = after or ""
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sep = sep or ", "
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local result = ""
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for i, v in pairs(source) do
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if not isempty(v) then
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local part = before .. v .. after
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if i == 1 then
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result = part
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else
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result = result .. sep .. part
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end
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end
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end
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return result
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end
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function wrap(s, char)
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char = char or "'"
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return char .. s .. char
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end
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-- Wraps given string into 'string' and escapes any 's in it
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function escape_and_wrap(s, char, replacement)
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char = char or "'"
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replacement = replacement or "\\" .. char
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return wrap(string.gsub(s, char, replacement), char)
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end
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-- Escapes single quotes in a string and wraps the input in single quotes
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function escape_single_bash(s)
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return escape_and_wrap(s, "'", "'\\''")
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end
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-- Returns (a .. b) if b is not empty or nil
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function joined_or_nil(a, b)
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return not isempty(b) and (a .. b) or nil
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end
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-- Put items from one table into another
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function extend_table(target, source)
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for i, v in pairs(source) do
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table.insert(target, v)
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end
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end
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-- Creates a handle and filename for a temporary random file (in current directory)
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function create_temporary_file(base, mode, suffix)
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local handle, filename
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suffix = suffix or ""
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while true do
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filename = base .. tostring(math.random(1, 5000)) .. suffix
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handle = io.open(filename, "r")
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if not handle then
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handle = io.open(filename, mode)
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break
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end
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io.close(handle)
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end
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return handle, filename
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end
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function get_processor_count()
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local proc_count
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if ON_WINDOWS then
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proc_count = tonumber(os.getenv("NUMBER_OF_PROCESSORS"))
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else
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local cpuinfo_handle = io.open("/proc/cpuinfo")
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if cpuinfo_handle ~= nil then
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local cpuinfo_contents = cpuinfo_handle:read("*a")
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local _, replace_count = cpuinfo_contents:gsub('processor', '')
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proc_count = replace_count
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end
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end
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if proc_count and proc_count > 0 then
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return proc_count
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else
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return nil
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end
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end
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function substitute_values(string, values)
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local substitutor = function(match)
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if match == "%" then
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return "%"
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else
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-- nil is discarded by gsub
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return values[match]
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end
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end
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local substituted = string:gsub('%%(.)', substitutor)
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return substituted
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end
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-- ASS HELPERS --
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function round_rect_top( ass, x0, y0, x1, y1, r )
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local c = 0.551915024494 * r -- circle approximation
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ass:move_to(x0 + r, y0)
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ass:line_to(x1 - r, y0) -- top line
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if r > 0 then
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ass:bezier_curve(x1 - r + c, y0, x1, y0 + r - c, x1, y0 + r) -- top right corner
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end
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ass:line_to(x1, y1) -- right line
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ass:line_to(x0, y1) -- bottom line
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ass:line_to(x0, y0 + r) -- left line
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if r > 0 then
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ass:bezier_curve(x0, y0 + r - c, x0 + r - c, y0, x0 + r, y0) -- top left corner
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end
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end
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function round_rect(ass, x0, y0, x1, y1, rtl, rtr, rbr, rbl)
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local c = 0.551915024494
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ass:move_to(x0 + rtl, y0)
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ass:line_to(x1 - rtr, y0) -- top line
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if rtr > 0 then
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ass:bezier_curve(x1 - rtr + rtr*c, y0, x1, y0 + rtr - rtr*c, x1, y0 + rtr) -- top right corner
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end
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ass:line_to(x1, y1 - rbr) -- right line
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if rbr > 0 then
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ass:bezier_curve(x1, y1 - rbr + rbr*c, x1 - rbr + rbr*c, y1, x1 - rbr, y1) -- bottom right corner
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end
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ass:line_to(x0 + rbl, y1) -- bottom line
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if rbl > 0 then
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ass:bezier_curve(x0 + rbl - rbl*c, y1, x0, y1 - rbl + rbl*c, x0, y1 - rbl) -- bottom left corner
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end
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ass:line_to(x0, y0 + rtl) -- left line
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if rtl > 0 then
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ass:bezier_curve(x0, y0 + rtl - rtl*c, x0 + rtl - rtl*c, y0, x0 + rtl, y0) -- top left corner
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end
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end
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local SCRIPT_NAME = "mpv_thumbnail_script"
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local default_cache_base = ON_WINDOWS and os.getenv("TEMP") or "/tmp/"
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local thumbnailer_options = {
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-- The thumbnail directory
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cache_directory = join_paths(default_cache_base, "mpv_thumbs_cache"),
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------------------------
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-- Generation options --
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------------------------
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-- Automatically generate the thumbnails on video load, without a keypress
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autogenerate = true,
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-- Only automatically thumbnail videos shorter than this (seconds)
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autogenerate_max_duration = 3600, -- 1 hour
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-- SHA1-sum filenames over this length
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-- It's nice to know what files the thumbnails are (hence directory names)
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-- but long URLs may approach filesystem limits.
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hash_filename_length = 128,
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-- Use mpv to generate thumbnail even if ffmpeg is found in PATH
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-- ffmpeg does not handle ordered chapters (MKVs which rely on other MKVs)!
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-- mpv is a bit slower, but has better support overall (eg. subtitles in the previews)
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prefer_mpv = true,
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-- Explicitly disable subtitles on the mpv sub-calls
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mpv_no_sub = false,
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-- Add a "--no-config" to the mpv sub-call arguments
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mpv_no_config = false,
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-- Add a "--profile=<mpv_profile>" to the mpv sub-call arguments
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-- Use "" to disable
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mpv_profile = "",
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-- Output debug logs to <thumbnail_path>.log, ala <cache_directory>/<video_filename>/000000.bgra.log
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-- The logs are removed after successful encodes, unless you set mpv_keep_logs below
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mpv_logs = true,
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-- Keep all mpv logs, even the succesfull ones
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mpv_keep_logs = false,
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-- Disable the built-in keybind ("T") to add your own
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disable_keybinds = false,
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---------------------
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-- Display options --
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---------------------
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-- Move the thumbnail up or down
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-- For example:
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-- topbar/bottombar: 24
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-- rest: 0
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vertical_offset = 24,
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-- Adjust background padding
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-- Examples:
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-- topbar: 0, 10, 10, 10
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-- bottombar: 10, 0, 10, 10
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-- slimbox/box: 10, 10, 10, 10
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pad_top = 10,
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pad_bot = 0,
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pad_left = 10,
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pad_right = 10,
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-- If true, pad values are screen-pixels. If false, video-pixels.
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pad_in_screenspace = true,
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-- Calculate pad into the offset
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offset_by_pad = true,
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-- Background color in BBGGRR
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background_color = "000000",
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-- Alpha: 0 - fully opaque, 255 - transparent
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background_alpha = 80,
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-- Keep thumbnail on the screen near left or right side
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constrain_to_screen = true,
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-- Do not display the thumbnailing progress
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hide_progress = false,
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-----------------------
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-- Thumbnail options --
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-----------------------
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-- The maximum dimensions of the thumbnails (pixels)
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thumbnail_width = 200,
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thumbnail_height = 200,
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-- The thumbnail count target
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-- (This will result in a thumbnail every ~10 seconds for a 25 minute video)
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thumbnail_count = 150,
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-- The above target count will be adjusted by the minimum and
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-- maximum time difference between thumbnails.
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-- The thumbnail_count will be used to calculate a target separation,
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-- and min/max_delta will be used to constrict it.
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-- In other words, thumbnails will be:
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-- at least min_delta seconds apart (limiting the amount)
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-- at most max_delta seconds apart (raising the amount if needed)
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min_delta = 5,
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-- 120 seconds aka 2 minutes will add more thumbnails when the video is over 5 hours!
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max_delta = 90,
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-- Overrides for remote urls (you generally want less thumbnails!)
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-- Thumbnailing network paths will be done with mpv
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-- Allow thumbnailing network paths (naive check for "://")
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thumbnail_network = false,
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-- Override thumbnail count, min/max delta
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remote_thumbnail_count = 60,
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remote_min_delta = 15,
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remote_max_delta = 120,
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-- Try to grab the raw stream and disable ytdl for the mpv subcalls
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-- Much faster than passing the url to ytdl again, but may cause problems with some sites
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remote_direct_stream = true,
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}
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read_options(thumbnailer_options, SCRIPT_NAME)
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function skip_nil(tbl)
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local n = {}
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for k, v in pairs(tbl) do
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table.insert(n, v)
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end
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return n
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end
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function create_thumbnail_mpv(file_path, timestamp, size, output_path, options)
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options = options or {}
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local ytdl_disabled = not options.enable_ytdl and (mp.get_property_native("ytdl") == false
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or thumbnailer_options.remote_direct_stream)
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local header_fields_arg = nil
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local header_fields = mp.get_property_native("http-header-fields")
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if #header_fields > 0 then
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-- We can't escape the headers, mpv won't parse "--http-header-fields='Name: value'" properly
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header_fields_arg = "--http-header-fields=" .. table.concat(header_fields, ",")
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end
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local profile_arg = nil
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if thumbnailer_options.mpv_profile ~= "" then
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profile_arg = "--profile=" .. thumbnailer_options.mpv_profile
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end
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local log_arg = "--log-file=" .. output_path .. ".log"
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local mpv_command = skip_nil({
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"mpv",
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-- Hide console output
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"--msg-level=all=no",
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-- Disable ytdl
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(ytdl_disabled and "--no-ytdl" or nil),
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-- Pass HTTP headers from current instance
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header_fields_arg,
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-- Pass User-Agent and Referer - should do no harm even with ytdl active
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"--user-agent=" .. mp.get_property_native("user-agent"),
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"--referrer=" .. mp.get_property_native("referrer"),
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-- Disable hardware decoding
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"--hwdec=no",
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-- Insert --no-config, --profile=... and --log-file if enabled
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|
(thumbnailer_options.mpv_no_config and "--no-config" or nil),
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profile_arg,
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(thumbnailer_options.mpv_logs and log_arg or nil),
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file_path,
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"--start=" .. tostring(timestamp),
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"--frames=1",
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"--hr-seek=yes",
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"--no-audio",
|
|
-- Optionally disable subtitles
|
|
(thumbnailer_options.mpv_no_sub and "--no-sub" or nil),
|
|
|
|
("--vf=scale=%d:%d"):format(size.w, size.h),
|
|
"--vf-add=format=bgra",
|
|
"--of=rawvideo",
|
|
"--ovc=rawvideo",
|
|
"--o=" .. output_path
|
|
})
|
|
return utils.subprocess({args=mpv_command})
|
|
end
|
|
|
|
|
|
function create_thumbnail_ffmpeg(file_path, timestamp, size, output_path)
|
|
local ffmpeg_command = {
|
|
"ffmpeg",
|
|
"-loglevel", "quiet",
|
|
"-noaccurate_seek",
|
|
"-ss", format_time(timestamp, ":"),
|
|
"-i", file_path,
|
|
|
|
"-frames:v", "1",
|
|
"-an",
|
|
|
|
"-vf", ("scale=%d:%d"):format(size.w, size.h),
|
|
"-c:v", "rawvideo",
|
|
"-pix_fmt", "bgra",
|
|
"-f", "rawvideo",
|
|
|
|
"-y", output_path
|
|
}
|
|
return utils.subprocess({args=ffmpeg_command})
|
|
end
|
|
|
|
|
|
function check_output(ret, output_path, is_mpv)
|
|
local log_path = output_path .. ".log"
|
|
local success = true
|
|
|
|
if ret.killed_by_us then
|
|
return nil
|
|
else
|
|
if ret.error or ret.status ~= 0 then
|
|
msg.error("Thumbnailing command failed!")
|
|
msg.error("mpv process error:", ret.error)
|
|
msg.error("Process stdout:", ret.stdout)
|
|
if is_mpv then
|
|
msg.error("Debug log:", log_path)
|
|
end
|
|
|
|
success = false
|
|
end
|
|
|
|
if not file_exists(output_path) then
|
|
msg.error("Output file missing!", output_path)
|
|
success = false
|
|
end
|
|
end
|
|
|
|
if is_mpv and not thumbnailer_options.mpv_keep_logs then
|
|
-- Remove successful debug logs
|
|
if success and file_exists(log_path) then
|
|
os.remove(log_path)
|
|
end
|
|
end
|
|
|
|
return success
|
|
end
|
|
|
|
|
|
function do_worker_job(state_json_string, frames_json_string)
|
|
msg.debug("Handling given job")
|
|
local thumb_state, err = utils.parse_json(state_json_string)
|
|
if err then
|
|
msg.error("Failed to parse state JSON")
|
|
return
|
|
end
|
|
|
|
local thumbnail_indexes, err = utils.parse_json(frames_json_string)
|
|
if err then
|
|
msg.error("Failed to parse thumbnail frame indexes")
|
|
return
|
|
end
|
|
|
|
local thumbnail_func = create_thumbnail_mpv
|
|
if not thumbnailer_options.prefer_mpv then
|
|
if ExecutableFinder:get_executable_path("ffmpeg") then
|
|
thumbnail_func = create_thumbnail_ffmpeg
|
|
else
|
|
msg.warn("Could not find ffmpeg in PATH! Falling back on mpv.")
|
|
end
|
|
end
|
|
|
|
local file_duration = mp.get_property_native("duration")
|
|
local file_path = thumb_state.worker_input_path
|
|
|
|
if thumb_state.is_remote then
|
|
if (thumbnail_func == create_thumbnail_ffmpeg) then
|
|
msg.warn("Thumbnailing remote path, falling back on mpv.")
|
|
end
|
|
thumbnail_func = create_thumbnail_mpv
|
|
end
|
|
|
|
local generate_thumbnail_for_index = function(thumbnail_index)
|
|
-- Given a 1-based thumbnail index, generate a thumbnail for it based on the thumbnailer state
|
|
local thumb_idx = thumbnail_index - 1
|
|
msg.debug("Starting work on thumbnail", thumb_idx)
|
|
|
|
local thumbnail_path = thumb_state.thumbnail_template:format(thumb_idx)
|
|
-- Grab the "middle" of the thumbnail duration instead of the very start, and leave some margin in the end
|
|
local timestamp = math.min(file_duration - 0.25, (thumb_idx + 0.5) * thumb_state.thumbnail_delta)
|
|
|
|
mp.commandv("script-message", "mpv_thumbnail_script-progress", tostring(thumbnail_index))
|
|
|
|
-- The expected size (raw BGRA image)
|
|
local thumbnail_raw_size = (thumb_state.thumbnail_size.w * thumb_state.thumbnail_size.h * 4)
|
|
|
|
local need_thumbnail_generation = false
|
|
|
|
-- Check if the thumbnail already exists and is the correct size
|
|
local thumbnail_file = io.open(thumbnail_path, "rb")
|
|
if thumbnail_file == nil then
|
|
need_thumbnail_generation = true
|
|
else
|
|
local existing_thumbnail_filesize = thumbnail_file:seek("end")
|
|
if existing_thumbnail_filesize ~= thumbnail_raw_size then
|
|
-- Size doesn't match, so (re)generate
|
|
msg.warn("Thumbnail", thumb_idx, "did not match expected size, regenerating")
|
|
need_thumbnail_generation = true
|
|
end
|
|
thumbnail_file:close()
|
|
end
|
|
|
|
if need_thumbnail_generation then
|
|
local ret = thumbnail_func(file_path, timestamp, thumb_state.thumbnail_size, thumbnail_path, thumb_state.worker_extra)
|
|
local success = check_output(ret, thumbnail_path, thumbnail_func == create_thumbnail_mpv)
|
|
|
|
if success == nil then
|
|
-- Killed by us, changing files, ignore
|
|
msg.debug("Changing files, subprocess killed")
|
|
return true
|
|
elseif not success then
|
|
-- Real failure
|
|
mp.osd_message("Thumbnailing failed, check console for details", 3.5)
|
|
return true
|
|
end
|
|
else
|
|
msg.debug("Thumbnail", thumb_idx, "already done!")
|
|
end
|
|
|
|
-- Verify thumbnail size
|
|
-- Sometimes ffmpeg will output an empty file when seeking to a "bad" section (usually the end)
|
|
thumbnail_file = io.open(thumbnail_path, "rb")
|
|
|
|
-- Bail if we can't read the file (it should really exist by now, we checked this in check_output!)
|
|
if thumbnail_file == nil then
|
|
msg.error("Thumbnail suddenly disappeared!")
|
|
return true
|
|
end
|
|
|
|
-- Check the size of the generated file
|
|
local thumbnail_file_size = thumbnail_file:seek("end")
|
|
thumbnail_file:close()
|
|
|
|
-- Check if the file is big enough
|
|
local missing_bytes = math.max(0, thumbnail_raw_size - thumbnail_file_size)
|
|
if missing_bytes > 0 then
|
|
msg.warn(("Thumbnail missing %d bytes (expected %d, had %d), padding %s"):format(
|
|
missing_bytes, thumbnail_raw_size, thumbnail_file_size, thumbnail_path
|
|
))
|
|
-- Pad the file if it's missing content (eg. ffmpeg seek to file end)
|
|
thumbnail_file = io.open(thumbnail_path, "ab")
|
|
thumbnail_file:write(string.rep(string.char(0), missing_bytes))
|
|
thumbnail_file:close()
|
|
end
|
|
|
|
msg.debug("Finished work on thumbnail", thumb_idx)
|
|
mp.commandv("script-message", "mpv_thumbnail_script-ready", tostring(thumbnail_index), thumbnail_path)
|
|
end
|
|
|
|
msg.debug(("Generating %d thumbnails @ %dx%d for %q"):format(
|
|
#thumbnail_indexes,
|
|
thumb_state.thumbnail_size.w,
|
|
thumb_state.thumbnail_size.h,
|
|
file_path))
|
|
|
|
for i, thumbnail_index in ipairs(thumbnail_indexes) do
|
|
local bail = generate_thumbnail_for_index(thumbnail_index)
|
|
if bail then return end
|
|
end
|
|
|
|
end
|
|
|
|
-- Set up listeners and keybinds
|
|
|
|
-- Job listener
|
|
mp.register_script_message("mpv_thumbnail_script-job", do_worker_job)
|
|
|
|
|
|
-- Register this worker with the master script
|
|
local register_timer = nil
|
|
local register_timeout = mp.get_time() + 1.5
|
|
|
|
local register_function = function()
|
|
if mp.get_time() > register_timeout and register_timer then
|
|
msg.error("Thumbnail worker registering timed out")
|
|
register_timer:stop()
|
|
else
|
|
msg.debug("Announcing self to master...")
|
|
mp.commandv("script-message", "mpv_thumbnail_script-worker", mp.get_script_name())
|
|
end
|
|
end
|
|
|
|
register_timer = mp.add_periodic_timer(0.1, register_function)
|
|
|
|
mp.register_script_message("mpv_thumbnail_script-slaved", function()
|
|
msg.debug("Successfully registered with master")
|
|
register_timer:stop()
|
|
end)
|