Script này sẽ không được không được cài đặt trực tiếp. Nó là một thư viện cho các script khác để bao gồm các chỉ thị meta
// @require https://update.greasyfork.org/scripts/507157/1442600/subtitles-octopus.js
// # The following lists all copyright notices and licenses for the
// # work contained in JavascriptSubtitlesOctopus per project.
//
// # Project: subtitlesoctopus
// License: Expat
// Copyright: 2017-2021 JavascriptSubtitlesOctopus contributors
//
// # Project: brotli
// License: Expat
// Copyright: 2014 Google Inc.
// 2015 The Chromium Authors.
// 2016 Google Inc.
// 2017 Google Inc.
// 2018 Google Inc.
// 2015 Google Inc.
// 2013 Google Inc.
// 2009, 2010, 2013-2016 by the Brotli Authors
// 2010 Google Inc.
//
// # Project: expat
// License: Expat
// Copyright: 2019 Zhongyuan Zhou <zhouzhongyuan@huawei.com>
// 2017-2022 Rhodri James <rhodri@wildebeest.org.uk>
// 2022 Jeffrey Walton <noloader@gmail.com>
// 2017 Václav Slavík <vaclav@slavik.io>
// 2020 Kleber Tarcísio <klebertarcisio@yahoo.com.br>
// 2022 Samanta Navarro <ferivoz@riseup.net>
// 2020 Joe Orton <jorton@redhat.com>
// 2021 Dong-hee Na <donghee.na@python.org>
// 2016-2019 Sebastian Pipping <sebastian@pipping.org>
// 2017 Joe Orton <jorton@redhat.com>
// 2002 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
// 2004-2006 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
// 2017 Sebastian Pipping <sebastian@pipping.org>
// 2004-2006 Karl Waclawek <karl@waclawek.net>
// 2016 Cristian Rodríguez <crrodriguez@opensuse.org>
// 2003-2006 Karl Waclawek <karl@waclawek.net>
// 2006 Karl Waclawek <karl@waclawek.net>
// 2001-2003 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
// 2000-2004 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
// 2017 Franek Korta <fkorta@gmail.com>
// 2001-2004 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
// 2006-2012 Karl Waclawek <karl@waclawek.net>
// 2017 Benbuck Nason <bnason@netflix.com>
// 2019 David Loffredo <loffredo@steptools.com>
// 2021 Tim Bray <tbray@textuality.com>
// 2018 Benjamin Peterson <benjamin@python.org>
// 2017 Rhodri James <rhodri@wildebeest.org.uk>
// 2017 Chanho Park <chanho61.park@samsung.com>
// 2002-2005 Karl Waclawek <karl@waclawek.net>
// 2016-2020 Sebastian Pipping <sebastian@pipping.org>
// 2016 Gilles Espinasse <g.esp@free.fr>
// 2016-2018 Sebastian Pipping <sebastian@pipping.org>
// 2016 Gustavo Grieco <gustavo.grieco@imag.fr>
// 2007 Karl Waclawek <karl@waclawek.net>
// 2016 Ed Schouten <ed@nuxi.nl>
// 2002-2016 Karl Waclawek <karl@waclawek.net>
// 2001-2006 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
// 2016 Don Lewis <truckman@apache.org>
// 2000-2017 Expat development team
// 2002-2004 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
// 2017 José Gutiérrez de la Concha <jose@zeroc.com>
// 2000 Clark Cooper <coopercc@users.sourceforge.net>
// 2017 Viktor Szakats <commit@vsz.me>
// 2016 Gaurav <g.gupta@samsung.com>
// 2002 Greg Stein <gstein@users.sourceforge.net>
// 2018 Marco Maggi <marco.maggi-ipsu@poste.it>
// 2022 Jann Horn <jannh@google.com>
// 2016 Eric Rahm <erahm@mozilla.com>
// 2005-2012 Karl Waclawek <karl@waclawek.net>
// 2022 Thijs Schreijer <thijs@thijsschreijer.nl>
// 2020 Boris Kolpackov <boris@codesynthesis.com>
// 2017-2019 Sebastian Pipping <sebastian@pipping.org>
// 2005 Karl Waclawek <karl@waclawek.net>
// 1999-2000 Thai Open Source Software Center Ltd
// 2000-2017 Expat development team / 1997-2000 Thai Open Source Software Center Ltd
// 2005-2007 Steven Solie <steven@solie.ca>
// 2016-2021 Sebastian Pipping <sebastian@pipping.org>
// 2005 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
// 2017 Alexander Bluhm <alexander.bluhm@gmx.net>
// 2018 Anton Maklakov <antmak.pub@gmail.com>
// 2017 Rolf Eike Beer <eike@sf-mail.de>
// 2017-2021 Sebastian Pipping <sebastian@pipping.org>
// 2016-2022 Sebastian Pipping <sebastian@pipping.org>
// 1997-2000 Thai Open Source Software Center Ltd
// 2002-2009 Karl Waclawek <karl@waclawek.net>
// 2002 Karl Waclawek <karl@waclawek.net>
// 2020 Tim Gates <tim.gates@iress.com>
// 2004-2009 Karl Waclawek <karl@waclawek.net>
// 2016 Pascal Cuoq <cuoq@trust-in-soft.com>
// 2019-2020 Ben Wagner <bungeman@chromium.org>
// 2001-2002 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
// 2002-2006 Karl Waclawek <karl@waclawek.net>
// 2000-2005 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
// 2018 Yury Gribov <tetra2005@gmail.com>
// 2005-2009 Steven Solie <steven@solie.ca>
// 2003 Greg Stein <gstein@users.sourceforge.net>
// 2022 Martin Ettl <ettl.martin78@googlemail.com>
// 2018 Mariusz Zaborski <oshogbo@vexillium.org>
// 2016-2017 Sebastian Pipping <sebastian@pipping.org>
// 2001-2002 Greg Stein <gstein@users.sourceforge.net>
// 2002-2003 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
// 2005-2006 Karl Waclawek <karl@waclawek.net>
// 2017 Hans Wennborg <hans@chromium.org>
// 2016 Thomas Beutlich <tc@tbeu.de>
// 2000-2006 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
// 2019 Vadim Zeitlin <vadim@zeitlins.org>
//
// # Project: freetype
// License: FTL
// Copyright: 2009-2013 Adobe Systems Incorporated.
// 2016-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2013 Adobe Systems Incorporated.
// 2004-2022 David Turner, Robert Wilhelm, Werner Lemberg, and George Williams.
// 2018-2022 Armin Hasitzka, David Turner, Robert Wilhelm, and Werner Lemberg.
// 2013-2022 Google, Inc.
// 1996-2022 David Turner, Robert Wilhelm, Werner Lemberg and Detlef Würkner.
// 2007-2014 Adobe Systems Incorporated.
// 2008-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2006-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2007-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2004-2022 Masatake YAMATO, Redhat K.K,
// 1996-2022 David Turner, Robert Wilhelm, Werner Lemberg, and Detlef Wuerkner.
// 1996-2022 David Turner, Robert Wilhelm, and Werner Lemberg
// 1995-2016 Jean-loup Gailly, Mark Adler
// 2021-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2004-2022 David Turner, Robert Wilhelm, Werner Lemberg and George Williams.
// 2018-2022 David Turner, Robert Wilhelm, Dominik Röttsches, and Werner Lemberg.
// 2009-2022 Oran Agra and Mickey Gabel.
// 1995-2017 Jean-loup Gailly
// 2010-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2003 Huw D M Davies for Codeweavers
// 2013-2014 Adobe Systems Incorporated.
// 2005-2022 David Turner.
// 1995-2011, 2016 Mark Adler
// 2010-2022 Joel Klinghed.
// 2002-2022 Roberto Alameda.
// 1996-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2011-2013 Adobe Systems Incorporated.
// 2005-2022 Werner Lemberg and Detlef Würkner.
// 2013-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2007 Dmitry Timoshkov for Codeweavers
// 2002-2022 David Turner, Robert Wilhelm, and Werner Lemberg
// 1996-2022 Just van Rossum, David Turner, Robert Wilhelm, and Werner Lemberg.
// 1995-2017 Mark Adler
// 2000-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2022 David Turner, Robert Wilhelm, Werner Lemberg, and Moazin Khatti.
// 2006-2013 Adobe Systems Incorporated.
// 1995-2003, 2010 Mark Adler
// 2012-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2007-2022 Rahul Bhalerao <rahul.bhalerao@redhat.com>, <b.rahul.pm@gmail.com>.
// 2007-2022 David Turner.
// 2017-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2008-2022 David Turner, Robert Wilhelm, Werner Lemberg, and suzuki toshiya.
// 1995-2005, 2010 Mark Adler
// 2018-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2005-2022 suzuki toshiya, Masatake YAMATO, Red Hat K.K.,
// 2020-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2007-2022 Derek Clegg and Michael Toftdal.
// 2004-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2013 Google, Inc.
// 2019-2022 Nikhil Ramakrishnan, David Turner, Robert Wilhelm, and Werner Lemberg.
// 2004-2022 Albert Chin-A-Young.
// 2009-2014 Adobe Systems Incorporated.
// 2003-2022 Masatake YAMATO, Redhat K.K.,
// 2002-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2007-2013 Adobe Systems Incorporated.
// 2007-2022 Dereg Clegg and Michael Toftdal.
// 2003-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2004-2022 Masatake YAMATO and Redhat K.K.
// 2004-2022 Masatake YAMATO, Red Hat K.K.,
// 2001, 2012 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2001-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 1995-2022 Jean-loup Gailly, Mark Adler
// 1995-2022 Mark Adler
// 2004-2019 Mark Adler
// 1990, 1994, 1998 The Open Group
// 1995-2019 Mark Adler
// 2005-2022 David Turner, Robert Wilhelm, and Werner Lemberg.
// 2004-2022 suzuki toshiya, Masatake YAMATO, Red Hat K.K.,
//
// License: public-domain
// Copyright: 2001 Alexander Peslyak and it is hereby released to the
//
// License: Zlib
// Copyright: 1995-2022 Jean-loup Gailly and Mark Adler
//
// License: Expat
// Copyright: 2000-2001, 2004 Francesco Zappa Nardelli
// 2001-2004 Francesco Zappa Nardelli
// 2003 Francesco Zappa Nardelli
// 2001-2015 Francesco Zappa Nardelli
// 2001-2004, 2011 Francesco Zappa Nardelli
// 2000-2002 Francesco Zappa Nardelli
// 2000 Computing Research Labs, New Mexico State University
// 2001-2014 Francesco Zappa Nardelli
// 2001-2002, 2012 Francesco Zappa Nardelli
// 2001-2002 Francesco Zappa Nardelli
// 2001-2008, 2011, 2013-2014 Francesco Zappa Nardelli
// 2000-2003, 2006, 2010 Francesco Zappa Nardelli
// 2000-2001, 2003 Francesco Zappa Nardelli
// 2000-2004, 2006-2011, 2013-2014 Francesco Zappa Nardelli
// 2000-2010, 2012-2014 Francesco Zappa Nardelli
//
// License: BSL-1.0
// Copyright: 2019 nyorain
//
// # Project: fribidi
// License: LGPL-2.1+
// Copyright: 1999-2000, 2017 Dov Grobgeld
// 1999-2000 Dov Grobgeld
// 2004 Behdad Esfahbod
// 2001-2002, 2004 Behdad Esfahbod
// 2009 Behdad Esfahbod
// 2017 Dov Grobgeld
// 2004-2005 Behdad Esfahbod
// 2004 Sharif FarsiWeb, Inc.
// 2015, 2017 Dov Grobgeld
// 2005 Behdad Esfahbod
// 2001 Behdad Esfahbod.
// 2001-2002 Behdad Esfahbod
// 2004 Sharif FarsiWeb, Inc
//
// # Project: fontconfig
// License: NTP~disclaimer
// Copyright: 2002 Keith Packard
// 2009 Roozbeh Pournader
// 2000 Tuomas J. Lukka
// 2006 Keith Packard
// 2008 Red Hat, Inc.
// 2000-2007 Keith Packard / 2005 Patrick Lam / 2009 Roozbeh Pournader / 2008,2009 Red Hat, Inc. / 2008 Danilo Šegan / 2012 Google, Inc.
// 2001 Keith Packard
// 2012 Google, Inc.
// 2012 Red Hat, Inc.
// 2013 Raimund Steger
// 2008,2009 Red Hat, Inc.
// 2000-2007 Keith Packard
// 2005 Patrick Lam
// 2003 Keith Packard
// 息 2006 Keith Packard
// 2020 Zoltan Vandrus
// 2014 Red Hat, Inc.
// 2007 Keith Packard
// 2018 Akira TAGOH
// 2008 Danilo Šegan
// 息 2010 Behdad Esfahbod
// 2015 Akira TAGOH
// 2008-2009 Red Hat, Inc.
// 2016 Akira TAGOH
// 2000 Keith Packard
// 2010 Behdad Esfahbod
// 2013 Google, Inc.
// 2013 Akira TAGOH
//
// License: MIT~old
// Copyright: 2009-2010 Red Hat, Inc.
// 2011-2013 Google, Inc.
// 2007 Chris Wilson
//
// License: public-domain
// Copyright: 2008,2009 Red Hat, Inc.
// 2009 Roozbeh Pournader
// 2012 Google, Inc.
// 2008 Danilo Šegan
// 2005 Patrick Lam
// 2000-2007 Keith Packard
//
// License: Expat
// Copyright: 2002-2003 Juliusz Chroboczek
//
// # Project: harfbuzz
// License: NTP~disclaimer
// Copyright: 2002 Keith Packard
// 2014 Google, Inc.
//
// License: MIT~old
// Copyright: 2012 Mozilla Foundation.
// 2004, 2007, 2009 Red Hat, Inc.
// 2009 Red Hat, Inc.
// 2015 Google, Inc.
// 2014 Google, Inc.
// 2018 Ebrahim Byagowi
// 2016 Igalia S.L.
// 2018 Ebrahim Byagowi.
// 2011 Martin Hosken
// 2019 Ebrahim Byagowi
// 2020 Ebrahim Byagowi
// 1998-2004 David Turner and Werner Lemberg
// 2013 Red Hat, Inc.
// 2011-2012 Google, Inc.
// 2011 SIL International
// 2018 Khaled Hosny
// 2018 Google, Inc.
// 2019-2020 Ebrahim Byagowi
// 2022 Google, Inc.
// 2012 Google, Inc.
// 2017 Google, Inc.
// 2007-2009 Red Hat, Inc.
// 2011 Codethink Limited
// 2013 Google, Inc.
// 2015-2019 Ebrahim Byagowi
// 2016 Google, Inc.
// 2011 Google, Inc.
//
// # Project: libass
// License: public-domain
// Copyright: 2006-2016 libass contributors
//
// License: NTP
// Copyright: 1994 Sun Microsystems, Inc.
// 2016 Oleg Oshmyan <chortos@inbox.lv>
// 1988-1993 The Regents of the University of California.
//
// License: ISC
// Copyright: 2015 Oleg Oshmyan <chortos@inbox.lv>
// 2011-2014 Yu Zhuohuang <yuzhuohuang@qq.com>
// 2013 rcombs <rcombs@rcombs.me>
// 2016 Vabishchevich Nikolay <vabnick@gmail.com>
// 2022 libass contributors
// 2015 Stephan Vedder <stephan.vedder@gmail.com>
// 2015 Vabishchevich Nikolay <vabnick@gmail.com>
// interest in the
// 2006-2016 libass contributors
// 2021 libass contributors
// 2017 Vabishchevich Nikolay <vabnick@gmail.com>
// 2011 Grigori Goronzy <greg@chown.ath.cx>
// 2010 Grigori Goronzy <greg@geekmind.org>
// 2014 Vabishchevich Nikolay <vabnick@gmail.com>
// 2013 Stefano Pigozzi <stefano.pigozzi@gmail.com>
// 2015 Grigori Goronzy <greg@kinoho.net>
// 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
// 2009 Grigori Goronzy <greg@geekmind.org>
//
// # The following section contains the full license text or
// # where permitted a shorter notice for all works contained
// # in JavascriptSubtitlesOctopus listed above
// #
// # Note that the shortnames used here are identical to those used by Debian
// # and will in some cases differ from SPDX identifiers. See below.
// #
// # Debian-name | SPDX-name
// # ---------------+-------------------
// # MIT~old | MIT-Modern-Variant
// # Expat | MIT
// # NTP~disclaimer | (None; it is NTP with a more verbose warranty disclaimer)
//
// License: Expat
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
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// persons to whom the Software is furnished to do so, subject to the
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// .
// The above copyright notice and this permission notice shall be included
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// .
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// 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.
//
// License: FTL
// Portions of this software are copyright © 2021 The FreeType
// Project (www.freetype.org). All rights reserved.
// A copy of the FreeType License can be obtained at
// https://gitlab.freedesktop.org/freetype/freetype/-/blob/master/docs/FTL.TXT
//
// License: ISC
// Permission to use, copy, modify, and/or distribute this software for any
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// Permission to use, copy, modify, and distribute this
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// notice appear in all copies. The University of California
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// Boost Software License - Version 1.0 - August 17th, 2003
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// License: LGPL-2.1
// GNU LESSER GENERAL PUBLIC LICENSE
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// .
// Copyright (C) 1991, 1999 Free Software Foundation, Inc.
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// That's all there is to it!
"use strict";
var SubtitlesOctopus = function (options) {
var supportsWebAssembly = false;
try {
if (typeof WebAssembly === "object"
&& typeof WebAssembly.instantiate === "function") {
const module = new WebAssembly.Module(Uint8Array.of(0x0, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00));
if (module instanceof WebAssembly.Module)
supportsWebAssembly = (new WebAssembly.Instance(module) instanceof WebAssembly.Instance);
}
} catch (e) {
}
console.log("WebAssembly support detected: " + (supportsWebAssembly ? "yes" : "no"));
var self = this;
self.canvas = options.canvas; // HTML canvas element (optional if video specified)
self.renderMode = options.renderMode || (options.lossyRender ? 'lossy' : 'wasm-blend');
self.libassMemoryLimit = options.libassMemoryLimit || 0;
self.libassGlyphLimit = options.libassGlyphLimit || 0;
self.targetFps = options.targetFps || 24;
self.prescaleFactor = options.prescaleFactor || 1.0;
self.prescaleHeightLimit = options.prescaleHeightLimit || 1080;
self.maxRenderHeight = options.maxRenderHeight || 0; // 0 - no limit
self.dropAllAnimations = options.dropAllAnimations || false; // attempt to remove all animations as a last ditch effort for displaying on weak hardware; may severly mangle subtitles if enabled
self.isOurCanvas = false; // (internal) we created canvas and manage it
self.video = options.video; // HTML video element (optional if canvas specified)
self.canvasParent = null; // (internal) HTML canvas parent element
self.fonts = options.fonts || []; // Array with links to fonts used in sub (optional)
self.availableFonts = options.availableFonts || []; // Object with all available fonts (optional). Key is font name in lower case, value is link: {"arial": "/font1.ttf"}
self.fallbackFont = options.fallbackFont || 'default.woff2'; // URL to override fallback font, for example, with a CJK one. Default fallback font is Liberation Sans (Optional)
self.lazyFileLoading = options.lazyFileLoading || false; // Load fonts in a lazy way. Requires Access-Control-Expose-Headers for Accept-Ranges, Content-Length, and Content-Encoding. If Content-Encoding is compressed, file will be fully fetched instead of just a HEAD request.
self.onReadyEvent = options.onReady; // Function called when SubtitlesOctopus is ready (optional)
if (supportsWebAssembly) {
self.workerUrl = options.workerUrl || 'subtitles-octopus-worker.js'; // Link to WebAssembly worker
} else {
self.workerUrl = options.legacyWorkerUrl || 'subtitles-octopus-worker-legacy.js'; // Link to legacy worker
}
self.subUrl = options.subUrl; // Link to sub file (optional if subContent specified)
self.subContent = options.subContent || null; // Sub content (optional if subUrl specified)
self.onErrorEvent = options.onError; // Function called in case of critical error meaning sub wouldn't be shown and you should use alternative method (for instance it occurs if browser doesn't support web workers).
self.debug = options.debug || false; // When debug enabled, some performance info printed in console.
self.lastRenderTime = 0; // (internal) Last time we got some frame from worker
self.pixelRatio = window.devicePixelRatio || 1; // (internal) Device pixel ratio (for high dpi devices)
self.timeOffset = options.timeOffset || 0; // Time offset would be applied to currentTime from video (option)
self.hasAlphaBug = false;
(function() {
if (typeof ImageData.prototype.constructor === 'function') {
try {
// try actually calling ImageData, as on some browsers it's reported
// as existing but calling it errors out as "TypeError: Illegal constructor"
new window.ImageData(new Uint8ClampedArray([0, 0, 0, 0]), 1, 1);
return;
} catch (e) {
console.log("detected that ImageData is not constructable despite browser saying so");
}
}
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
window.ImageData = function () {
var i = 0;
if (arguments[0] instanceof Uint8ClampedArray) {
var data = arguments[i++];
}
var width = arguments[i++];
var height = arguments[i];
var imageData = ctx.createImageData(width, height);
if (data) imageData.data.set(data);
return imageData;
}
})();
self.workerError = function (error) {
console.error('Worker error: ', error);
if (self.onErrorEvent) {
self.onErrorEvent(error);
}
if (!self.debug) {
self.dispose();
throw new Error('Worker error: ' + error);
}
};
// Not tested for repeated usage yet
self.init = function () {
if (!window.Worker) {
self.workerError('worker not supported');
return;
}
// Worker
if (!self.worker) {
self.worker = new Worker(self.workerUrl);
self.worker.addEventListener('message', self.onWorkerMessage);
self.worker.addEventListener('error', self.workerError);
}
self.workerActive = false;
self.createCanvas();
self.setVideo(options.video);
self.setSubUrl(options.subUrl);
self.worker.postMessage({
target: 'worker-init',
width: self.canvas.width,
height: self.canvas.height,
URL: document.URL,
currentScript: self.workerUrl,
preMain: true,
renderMode: self.renderMode,
subUrl: self.subUrl,
subContent: self.subContent,
fonts: self.fonts,
availableFonts: self.availableFonts,
fallbackFont: self.fallbackFont,
lazyFileLoading: self.lazyFileLoading,
debug: self.debug,
targetFps: self.targetFps,
libassMemoryLimit: self.libassMemoryLimit,
libassGlyphLimit: self.libassGlyphLimit,
dropAllAnimations: self.dropAllAnimations
});
};
self.createCanvas = function () {
if (!self.canvas) {
if (self.video) {
self.isOurCanvas = true;
self.canvas = document.createElement('canvas');
self.canvas.className = 'libassjs-canvas';
self.canvas.style.display = 'none';
self.canvasParent = document.createElement('div');
self.canvasParent.className = 'libassjs-canvas-parent';
self.canvasParent.appendChild(self.canvas);
if (self.video.nextSibling) {
self.video.parentNode.insertBefore(self.canvasParent, self.video.nextSibling);
}
else {
self.video.parentNode.appendChild(self.canvasParent);
}
}
else {
if (!self.canvas) {
self.workerError('Don\'t know where to render: you should give video or canvas in options.');
}
}
}
self.ctx = self.canvas.getContext('2d');
self.bufferCanvas = document.createElement('canvas');
self.bufferCanvasCtx = self.bufferCanvas.getContext('2d');
// test for alpha bug, where e.g. WebKit can render a transparent pixel
// (with alpha == 0) as non-black which then leads to visual artifacts
self.bufferCanvas.width = 1;
self.bufferCanvas.height = 1;
var testBuf = new Uint8ClampedArray([0, 255, 0, 0]);
var testImage = new ImageData(testBuf, 1, 1);
self.bufferCanvasCtx.clearRect(0, 0, 1, 1);
self.ctx.clearRect(0, 0, 1, 1);
var prePut = self.ctx.getImageData(0, 0, 1, 1).data;
self.bufferCanvasCtx.putImageData(testImage, 0, 0);
self.ctx.drawImage(self.bufferCanvas, 0, 0);
var postPut = self.ctx.getImageData(0, 0, 1, 1).data;
self.hasAlphaBug = prePut[1] != postPut[1];
if (self.hasAlphaBug) {
console.log("Detected a browser having issue with transparent pixels, applying workaround");
}
};
function onTimeUpdate() {
self.setCurrentTime(self.video.currentTime + self.timeOffset);
};
function onPlaying() {
self.setIsPaused(false, self.video.currentTime + self.timeOffset);
}
function onPause() {
self.setIsPaused(true, self.video.currentTime + self.timeOffset);
}
function onSeeking() {
self.video.removeEventListener('timeupdate', onTimeUpdate, false);
}
function onSeeked() {
self.video.addEventListener('timeupdate', onTimeUpdate, false);
var currentTime = self.video.currentTime + self.timeOffset;
self.setCurrentTime(currentTime);
}
function onRateChange() {
self.setRate(self.video.playbackRate);
}
function onWaiting() {
self.setIsPaused(true, self.video.currentTime + self.timeOffset);
}
function onLoadedMetadata(e) {
e.target.removeEventListener(e.type, onLoadedMetadata, false);
self.resize();
}
self.setVideo = function (video) {
self.video = video;
if (self.video) {
self.video.addEventListener('timeupdate', onTimeUpdate, false);
self.video.addEventListener('playing', onPlaying, false);
self.video.addEventListener('pause', onPause, false);
self.video.addEventListener('seeking', onSeeking, false);
self.video.addEventListener('seeked', onSeeked, false);
self.video.addEventListener('ratechange', onRateChange, false);
self.video.addEventListener('waiting', onWaiting, false);
document.addEventListener("fullscreenchange", self.resizeWithTimeout, false);
document.addEventListener("mozfullscreenchange", self.resizeWithTimeout, false);
document.addEventListener("webkitfullscreenchange", self.resizeWithTimeout, false);
document.addEventListener("msfullscreenchange", self.resizeWithTimeout, false);
window.addEventListener("resize", self.resizeWithTimeout, false);
// Support Element Resize Observer
if (typeof ResizeObserver !== "undefined") {
self.ro = new ResizeObserver(self.resizeWithTimeout);
self.ro.observe(self.video);
}
if (self.video.videoWidth > 0) {
self.resize();
}
else {
self.video.addEventListener('loadedmetadata', onLoadedMetadata, false);
}
}
};
self.getVideoPosition = function () {
var videoRatio = self.video.videoWidth / self.video.videoHeight;
var width = self.video.offsetWidth, height = self.video.offsetHeight;
var elementRatio = width / height;
var realWidth = width, realHeight = height;
if (elementRatio > videoRatio) realWidth = Math.floor(height * videoRatio);
else realHeight = Math.floor(width / videoRatio);
var x = (width - realWidth) / 2;
var y = (height - realHeight) / 2;
return {
width: realWidth,
height: realHeight,
x: x,
y: y
};
};
self.setSubUrl = function (subUrl) {
self.subUrl = subUrl;
};
self.renderFrameData = null;
function renderFrames() {
var data = self.renderFramesData;
var beforeDrawTime = performance.now();
self.ctx.clearRect(0, 0, self.canvas.width, self.canvas.height);
for (var i = 0; i < data.canvases.length; i++) {
var image = data.canvases[i];
self.bufferCanvas.width = image.w;
self.bufferCanvas.height = image.h;
var imageBuffer = new Uint8ClampedArray(image.buffer);
if (self.hasAlphaBug) {
for (var j = 3; j < imageBuffer.length; j = j + 4) {
imageBuffer[j] = (imageBuffer[j] >= 1) ? imageBuffer[j] : 1;
}
}
var imageData = new ImageData(imageBuffer, image.w, image.h);
self.bufferCanvasCtx.putImageData(imageData, 0, 0);
self.ctx.drawImage(self.bufferCanvas, image.x, image.y);
}
if (self.debug) {
var drawTime = Math.round(performance.now() - beforeDrawTime);
var blendTime = data.blendTime;
if (typeof blendTime !== 'undefined') {
console.log('render: ' + Math.round(data.spentTime - blendTime) + ' ms, blend: ' + Math.round(blendTime) + ' ms, draw: ' + drawTime + ' ms; TOTAL=' + Math.round(data.spentTime + drawTime) + ' ms');
} else {
console.log(Math.round(data.spentTime) + ' ms (+ ' + drawTime + ' ms draw)');
}
self.renderStart = performance.now();
}
}
/**
* Lossy Render Mode
*
*/
function renderFastFrames() {
var data = self.renderFramesData;
var beforeDrawTime = performance.now();
self.ctx.clearRect(0, 0, self.canvas.width, self.canvas.height);
for (var i = 0; i < data.bitmaps.length; i++) {
var image = data.bitmaps[i];
self.ctx.drawImage(image.bitmap, image.x, image.y);
}
if (self.debug) {
var drawTime = Math.round(performance.now() - beforeDrawTime);
console.log(data.bitmaps.length + ' bitmaps, libass: ' + Math.round(data.libassTime) + 'ms, decode: ' + Math.round(data.decodeTime) + 'ms, draw: ' + drawTime + 'ms');
self.renderStart = performance.now();
}
}
self.workerActive = false;
self.frameId = 0;
self.onWorkerMessage = function (event) {
//dump('\nclient got ' + JSON.stringify(event.data).substr(0, 150) + '\n');
if (!self.workerActive) {
self.workerActive = true;
if (self.onReadyEvent) {
self.onReadyEvent();
}
}
var data = event.data;
switch (data.target) {
case 'stdout': {
console.log(data.content);
break;
}
case 'console-log': {
console.log.apply(console, JSON.parse(data.content));
break;
}
case 'console-debug': {
console.debug.apply(console, JSON.parse(data.content));
break;
}
case 'console-info': {
console.info.apply(console, JSON.parse(data.content));
break;
}
case 'console-warn': {
console.warn.apply(console, JSON.parse(data.content));
break;
}
case 'console-error': {
console.error.apply(console, JSON.parse(data.content));
break;
}
case 'stderr': {
console.error(data.content);
break;
}
case 'window': {
window[data.method]();
break;
}
case 'canvas': {
switch (data.op) {
case 'getContext': {
self.ctx = self.canvas.getContext(data.type, data.attributes);
break;
}
case 'resize': {
self.resize(data.width, data.height);
break;
}
case 'renderCanvas': {
if (self.lastRenderTime < data.time) {
self.lastRenderTime = data.time;
self.renderFramesData = data;
window.requestAnimationFrame(renderFrames);
}
break;
}
case 'renderFastCanvas': {
if (self.lastRenderTime < data.time) {
self.lastRenderTime = data.time;
self.renderFramesData = data;
window.requestAnimationFrame(renderFastFrames);
}
break;
}
case 'setObjectProperty': {
self.canvas[data.object][data.property] = data.value;
break;
}
default:
throw 'eh?';
}
break;
}
case 'tick': {
self.frameId = data.id;
self.worker.postMessage({
target: 'tock',
id: self.frameId
});
break;
}
case 'custom': {
if (self['onCustomMessage']) {
self['onCustomMessage'](event);
} else {
throw 'Custom message received but client onCustomMessage not implemented.';
}
break;
}
case 'setimmediate': {
self.worker.postMessage({
target: 'setimmediate'
});
break;
}
case 'get-events': {
break;
}
case 'get-styles': {
break;
}
case 'ready': {
break;
}
default:
throw 'what? ' + data.target;
}
};
function _computeCanvasSize(width, height) {
var scalefactor = self.prescaleFactor <= 0 ? 1.0 : self.prescaleFactor;
if (height <= 0 || width <= 0) {
width = 0;
height = 0;
} else {
var sgn = scalefactor < 1 ? -1 : 1;
var newH = height;
if (sgn * newH * scalefactor <= sgn * self.prescaleHeightLimit)
newH *= scalefactor;
else if (sgn * newH < sgn * self.prescaleHeightLimit)
newH = self.prescaleHeightLimit;
if (self.maxRenderHeight > 0 && newH > self.maxRenderHeight)
newH = self.maxRenderHeight;
width *= newH / height;
height = newH;
}
return {'width': width, 'height': height};
}
self.resize = function (width, height, top, left) {
var videoSize = null;
top = top || 0;
left = left || 0;
if ((!width || !height) && self.video) {
videoSize = self.getVideoPosition();
var newSize = _computeCanvasSize(videoSize.width * self.pixelRatio, videoSize.height * self.pixelRatio);
width = newSize.width;
height = newSize.height;
var offset = self.canvasParent.getBoundingClientRect().top - self.video.getBoundingClientRect().top;
top = videoSize.y - offset;
left = videoSize.x;
}
if (!width || !height) {
if (!self.video) {
console.error('width or height is 0. You should specify width & height for resize.');
}
return;
}
if (
self.canvas.width != width ||
self.canvas.height != height ||
self.canvas.style.top != top ||
self.canvas.style.left != left
) {
self.canvas.width = width;
self.canvas.height = height;
if (videoSize != null) {
self.canvasParent.style.position = 'relative';
self.canvas.style.display = 'block';
self.canvas.style.position = 'absolute';
self.canvas.style.width = videoSize.width + 'px';
self.canvas.style.height = videoSize.height + 'px';
self.canvas.style.top = top + 'px';
self.canvas.style.left = left + 'px';
self.canvas.style.pointerEvents = 'none';
}
self.worker.postMessage({
target: 'canvas',
width: self.canvas.width,
height: self.canvas.height
});
}
};
self.resizeWithTimeout = function () {
self.resize();
setTimeout(self.resize, 100);
};
self.runBenchmark = function () {
self.worker.postMessage({
target: 'runBenchmark'
});
};
self.customMessage = function (data, options) {
options = options || {};
self.worker.postMessage({
target: 'custom',
userData: data,
preMain: options.preMain
});
};
self.setCurrentTime = function (currentTime) {
self.worker.postMessage({
target: 'video',
currentTime: currentTime
});
};
self.setTrackByUrl = function (url) {
self.worker.postMessage({
target: 'set-track-by-url',
url: url
});
};
self.setTrack = function (content) {
self.worker.postMessage({
target: 'set-track',
content: content
});
};
self.freeTrack = function (content) {
self.worker.postMessage({
target: 'free-track'
});
};
self.render = self.setCurrentTime;
self.setIsPaused = function (isPaused, currentTime) {
self.worker.postMessage({
target: 'video',
isPaused: isPaused,
currentTime: currentTime
});
};
self.setRate = function (rate) {
self.worker.postMessage({
target: 'video',
rate: rate
});
};
self.dispose = function () {
self.worker.postMessage({
target: 'destroy'
});
self.worker.terminate();
self.worker.removeEventListener('message', self.onWorkerMessage);
self.worker.removeEventListener('error', self.workerError);
self.workerActive = false;
self.worker = null;
// Remove the canvas element to remove residual subtitles rendered on player
if (self.video) {
self.video.removeEventListener('timeupdate', onTimeUpdate, false);
self.video.removeEventListener('playing', onPlaying, false);
self.video.removeEventListener('pause', onPause, false);
self.video.removeEventListener('seeking', onSeeking, false);
self.video.removeEventListener('seeked', onSeeked, false);
self.video.removeEventListener('ratechange', onRateChange, false);
self.video.removeEventListener('waiting', onWaiting, false);
self.video.removeEventListener('loadedmetadata', onLoadedMetadata, false);
document.removeEventListener('fullscreenchange', self.resizeWithTimeout, false);
document.removeEventListener('mozfullscreenchange', self.resizeWithTimeout, false);
document.removeEventListener('webkitfullscreenchange', self.resizeWithTimeout, false);
document.removeEventListener('msfullscreenchange', self.resizeWithTimeout, false);
window.removeEventListener('resize', self.resizeWithTimeout, false);
self.video.parentNode.removeChild(self.canvasParent);
self.video = null;
}
if (self.ro) {
self.ro.disconnect();
self.ro = null;
}
self.onCustomMessage = null;
self.onErrorEvent = null;
self.onReadyEvent = null;
};
self.fetchFromWorker = function (workerOptions, onSuccess, onError) {
try {
var target = workerOptions['target']
var timeout = setTimeout(function() {
reject(Error('Error: Timeout while try to fetch ' + target))
}, 5000)
var resolve = function (event) {
if (event.data.target == target) {
onSuccess(event.data)
self.worker.removeEventListener('message', resolve)
self.worker.removeEventListener('error', reject)
clearTimeout(timeout)
}
}
var reject = function (event) {
onError(event)
self.worker.removeEventListener('message', resolve)
self.worker.removeEventListener('error', reject)
clearTimeout(timeout)
}
self.worker.addEventListener('message', resolve)
self.worker.addEventListener('error', reject)
self.worker.postMessage(workerOptions)
} catch (error) {
onError(error)
}
}
self.createEvent = function (event) {
self.worker.postMessage({
target: 'create-event',
event: event
});
};
self.getEvents = function (onSuccess, onError) {
self.fetchFromWorker({
target: 'get-events'
}, function(data) {
onSuccess(data.events)
}, onError);
};
self.setEvent = function (event, index) {
self.worker.postMessage({
target: 'set-event',
event: event,
index: index
});
};
self.removeEvent = function (index) {
self.worker.postMessage({
target: 'remove-event',
index: index
});
};
self.createStyle = function (style) {
self.worker.postMessage({
target: 'create-style',
style: style
});
};
self.getStyles = function (onSuccess, onError) {
self.fetchFromWorker({
target: 'get-styles'
}, function(data) {
onSuccess(data.styles)
}, onError);
};
self.setStyle = function (style, index) {
self.worker.postMessage({
target: 'set-style',
style: style,
index: index
});
};
self.removeStyle = function (index) {
self.worker.postMessage({
target: 'remove-style',
index: index
});
};
self.init();
};
if (typeof SubtitlesOctopusOnLoad == 'function') {
SubtitlesOctopusOnLoad();
}
if (typeof exports !== 'undefined') {
if (typeof module !== 'undefined' && module.exports) {
exports = module.exports = SubtitlesOctopus
}
}
