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wubloader/thrimbletrimmer/scripts/common.js

735 lines
24 KiB
JavaScript

var DateTime = luxon.DateTime;
var Interval = luxon.Interval;
luxon.Settings.defaultZone = "utc";
var globalBusStartTime = DateTime.fromISO("1970-01-01T00:00:00");
var globalStreamName = "";
var globalStartTimeString = "";
var globalEndTimeString = "";
var globalPlayer = null;
var globalSetUpControls = false;
var globalSeekTimer = null;
var globalChatData = [];
var globalLoadChatWorker = null;
Hls.DefaultConfig.maxBufferHole = 600;
const VIDEO_FRAMES_PER_SECOND = 30;
const PLAYBACK_RATES = [0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2];
function commonPageSetup() {
if (!Hls.isSupported()) {
addError(
"Your browser doesn't support MediaSource extensions. Video playback and editing won't work."
);
}
globalLoadChatWorker = new Worker("scripts/chat-load.js");
}
function addError(errorText) {
const errorElement = document.createElement("div");
errorElement.innerText = errorText;
const dismissElement = document.createElement("a");
dismissElement.classList.add("error-dismiss");
dismissElement.innerText = "[X]";
errorElement.appendChild(dismissElement);
dismissElement.addEventListener("click", (event) => {
const errorHost = document.getElementById("errors");
errorHost.removeChild(errorElement);
});
const errorHost = document.getElementById("errors");
errorHost.appendChild(errorElement);
}
async function loadVideoPlayer(playlistURL) {
let rangedPlaylistURL = assembleVideoPlaylistURL(playlistURL);
const videoElement = document.getElementById("video");
videoElement.addEventListener("loadedmetadata", (_event) => {
setUpVideoControls();
sendChatLogLoadData();
});
videoElement.addEventListener("loadeddata", (_event) => {
const qualitySelector = document.getElementById("video-controls-quality");
globalPlayer.currentLevel = +qualitySelector.value;
});
globalPlayer = new Hls();
globalPlayer.attachMedia(video);
return new Promise((resolve, _reject) => {
globalPlayer.on(Hls.Events.MEDIA_ATTACHED, () => {
const startTime = getStartTime();
const endTime = getEndTime();
if (endTime && endTime.diff(startTime).milliseconds < 0) {
addError(
"End time is before the start time. This will prevent video loading and cause other problems."
);
}
globalPlayer.loadSource(rangedPlaylistURL);
globalPlayer.on(Hls.Events.ERROR, (_event, data) => {
if (data.fatal) {
switch (data.type) {
case Hls.ErrorTypes.NETWORK_ERROR:
if (data.reason === "no level found in manifest") {
addError(
"There is no video data between the specified start and end times. Change the times so that there is video content to play."
);
} else {
console.log("A fatal network error occurred; retrying", data);
globalPlayer.startLoad();
}
break;
case Hls.ErrorTypes.MEDIA_ERROR:
console.log("A fatal media error occurred; retrying", data);
globalPlayer.recoverMediaError();
break;
default:
console.log("A fatal error occurred; resetting video player", data);
addError(
"Some sort of video player error occurred. Thrimbletrimmer is resetting the video player."
);
resetVideoPlayer();
}
} else {
console.log("A non-fatal video player error occurred; HLS.js will retry", data);
}
});
resolve();
});
});
}
async function loadVideoPlayerFromDefaultPlaylist() {
const playlistURL = `/playlist/${globalStreamName}.m3u8`;
await loadVideoPlayer(playlistURL);
}
function resetVideoPlayer() {
updateSegmentPlaylist();
}
function updateSegmentPlaylist() {
const videoElement = document.getElementById("video");
const currentPlaybackRate = videoElement.playbackRate;
globalPlayer.destroy();
loadVideoPlayerFromDefaultPlaylist();
// The playback rate isn't maintained when destroying and reattaching hls.js
videoElement.playbackRate = currentPlaybackRate;
}
function setUpVideoControls() {
// Setting this up so it's removed from the event doesn't work; loadedmetadata fires twice anyway.
// We still need to prevent double-setup, so here we are.
if (globalSetUpControls) {
return;
}
globalSetUpControls = true;
const videoElement = document.getElementById("video");
const playPauseButton = document.getElementById("video-controls-play-pause");
if (videoElement.paused) {
playPauseButton.src = "images/video-controls/play.png";
} else {
playPauseButton.src = "images/video-controls/pause.png";
}
const togglePlayState = (_event) => {
if (videoElement.paused) {
videoElement.play();
} else {
videoElement.pause();
}
};
playPauseButton.addEventListener("click", togglePlayState);
videoElement.addEventListener("click", (event) => {
if (!videoElement.controls) {
togglePlayState(event);
}
});
videoElement.addEventListener("play", (_event) => {
playPauseButton.src = "images/video-controls/pause.png";
});
videoElement.addEventListener("pause", (_event) => {
playPauseButton.src = "images/video-controls/play.png";
});
const currentTime = document.getElementById("video-controls-current-time");
currentTime.innerText = videoHumanTimeFromVideoPlayerTime(videoElement.currentTime);
videoElement.addEventListener("timeupdate", (_event) => {
currentTime.innerText = videoHumanTimeFromVideoPlayerTime(videoElement.currentTime);
});
const duration = document.getElementById("video-controls-duration");
duration.innerText = videoHumanTimeFromVideoPlayerTime(videoElement.duration);
videoElement.addEventListener("durationchange", (_event) => {
duration.innerText = videoHumanTimeFromVideoPlayerTime(videoElement.duration);
});
const volumeMuted = document.getElementById("video-controls-volume-mute");
if (videoElement.muted) {
volumeMuted.src = "images/video-controls/volume-mute.png";
} else {
volumeMuted.src = "images/video-controls/volume.png";
}
const volumeLevel = document.getElementById("video-controls-volume-level");
const defaultVolume = +(localStorage.getItem("volume") ?? 0.5);
if (isNaN(defaultVolume)) {
defaultVolume = 0.5;
} else if (defaultVolume < 0) {
defaultVolume = 0;
} else if (defaultVolume > 1) {
defaultVolume = 1;
}
videoElement.volume = defaultVolume;
volumeLevel.value = videoElement.volume;
volumeMuted.addEventListener("click", (_event) => {
videoElement.muted = !videoElement.muted;
});
volumeLevel.addEventListener("click", (event) => {
videoElement.volume = event.offsetX / event.target.offsetWidth;
videoElement.muted = false;
});
videoElement.addEventListener("volumechange", (_event) => {
if (videoElement.muted) {
volumeMuted.src = "images/video-controls/volume-mute.png";
} else {
volumeMuted.src = "images/video-controls/volume.png";
}
volumeLevel.value = videoElement.volume;
localStorage.setItem("volume", videoElement.volume);
});
const playbackSpeed = document.getElementById("video-controls-playback-speed");
for (const speed of PLAYBACK_RATES) {
const speedOption = document.createElement("option");
speedOption.value = speed;
speedOption.innerText = `${speed}x`;
if (speed === 1) {
speedOption.selected = true;
}
playbackSpeed.appendChild(speedOption);
}
playbackSpeed.addEventListener("change", (_event) => {
const speed = +playbackSpeed.value;
videoElement.playbackRate = speed;
});
const quality = document.getElementById("video-controls-quality");
const defaultQuality = localStorage.getItem("quality");
for (const [qualityIndex, qualityLevel] of globalPlayer.levels.entries()) {
const qualityOption = document.createElement("option");
qualityOption.value = qualityIndex;
qualityOption.innerText = qualityLevel.name;
if (qualityLevel.name === defaultQuality) {
qualityOption.selected = true;
}
quality.appendChild(qualityOption);
}
localStorage.setItem("quality", quality.options[quality.options.selectedIndex].innerText);
quality.addEventListener("change", (_event) => {
globalPlayer.currentLevel = +quality.value;
localStorage.setItem("quality", quality.options[quality.options.selectedIndex].innerText);
});
const fullscreen = document.getElementById("video-controls-fullscreen");
fullscreen.addEventListener("click", (_event) => {
if (document.fullscreenElement) {
document.exitFullscreen();
} else {
videoElement.requestFullscreen();
}
});
videoElement.addEventListener("fullscreenchange", (_event) => {
if (document.fullscreenElement) {
videoElement.controls = true;
} else {
videoElement.controls = false;
}
});
const playbackPosition = document.getElementById("video-controls-playback-position");
playbackPosition.max = videoElement.duration;
playbackPosition.value = videoElement.currentTime;
videoElement.addEventListener("durationchange", (_event) => {
playbackPosition.max = videoElement.duration;
});
videoElement.addEventListener("timeupdate", (_event) => {
playbackPosition.value = videoElement.currentTime;
});
playbackPosition.addEventListener("click", (event) => {
const newPosition = (event.offsetX / event.target.offsetWidth) * videoElement.duration;
videoElement.currentTime = newPosition;
playbackPosition.value = newPosition;
});
/* Sometimes a mysterious issue occurs loading segments of the video when seeking.
* When this happens, twiddling the qualities tends to fix it. Here, we attempt to
* detect this situation and fix it automatically.
*/
videoElement.addEventListener("seeking", (_event) => {
// If we don't get a "seeked" event soon after the "seeking" event, we assume there's
// a loading error.
// To handle this, we set up a timed handler to pick this up.
if (globalSeekTimer !== null) {
clearTimeout(globalSeekTimer);
globalSeekTimer = null;
}
globalSeekTimer = setTimeout(() => {
const currentLevel = globalPlayer.currentLevel;
globalPlayer.currentLevel = -1;
globalPlayer.currentLevel = currentLevel;
}, 500);
});
videoElement.addEventListener("seeked", (_event) => {
// Since we got the seek, cancel the timed twiddling of qualities
if (globalSeekTimer !== null) {
clearTimeout(globalSeekTimer);
globalSeekTimer = null;
}
});
}
function dateTimeMathObjectFromBusTime(busTime) {
// We need to handle inputs like "-0:10:15" in a way that consistently makes the time negative.
// Since we can't assign the negative sign to any particular part, we'll check for the whole thing here.
let direction = 1;
if (busTime.startsWith("-")) {
busTime = busTime.slice(1);
direction = -1;
}
const parts = busTime.split(":", 3);
const hours = parseInt(parts[0]) * direction;
const minutes = (parts[1] || 0) * direction;
const seconds = (parts[2] || 0) * direction;
return { hours: hours, minutes: minutes, seconds: seconds };
}
function dateTimeFromBusTime(busTime) {
return globalBusStartTime.plus(dateTimeMathObjectFromBusTime(busTime));
}
function busTimeFromDateTime(dateTime) {
const diff = dateTime.diff(globalBusStartTime);
return formatIntervalForDisplay(diff);
}
function formatIntervalForDisplay(interval) {
if (interval.milliseconds < 0) {
const negativeInterval = interval.negate();
return `-${negativeInterval.toFormat("hh:mm:ss.SSS")}`;
}
return interval.toFormat("hh:mm:ss.SSS");
}
function dateTimeFromWubloaderTime(wubloaderTime) {
return DateTime.fromISO(wubloaderTime);
}
function wubloaderTimeFromDateTime(dateTime) {
if (!dateTime) {
return null;
}
// Not using ISO here because Luxon doesn't give us a quick way to print an ISO8601 string with no offset.
return dateTime.toFormat("yyyy-LL-dd'T'HH:mm:ss.SSS");
}
function busTimeFromWubloaderTime(wubloaderTime) {
if (wubloaderTime === "") {
return "";
}
const dt = dateTimeFromWubloaderTime(wubloaderTime);
return busTimeFromDateTime(dt);
}
function videoHumanTimeFromVideoPlayerTime(videoPlayerTime) {
const hours = Math.floor(videoPlayerTime / 3600);
let minutes = Math.floor((videoPlayerTime % 3600) / 60);
let seconds = Math.floor(videoPlayerTime % 60);
let milliseconds = Math.floor((videoPlayerTime * 1000) % 1000);
while (minutes.toString().length < 2) {
minutes = `0${minutes}`;
}
while (seconds.toString().length < 2) {
seconds = `0${seconds}`;
}
while (milliseconds.toString().length < 3) {
milliseconds = `0${milliseconds}`;
}
if (hours > 0) {
return `${hours}:${minutes}:${seconds}.${milliseconds}`;
}
return `${minutes}:${seconds}.${milliseconds}`;
}
function videoPlayerTimeFromVideoHumanTime(videoHumanTime) {
let timeParts = videoHumanTime.split(":", 3);
let hours;
let minutes;
let seconds;
if (timeParts.length < 2) {
hours = 0;
minutes = 0;
seconds = +timeParts[0];
} else if (timeParts.length < 3) {
hours = 0;
minutes = parseInt(timeParts[0]);
seconds = +timeParts[1];
} else {
hours = parseInt(timeParts[0]);
minutes = parseInt(timeParts[1]);
seconds = +timeParts[2];
}
if (isNaN(hours) || isNaN(minutes) || isNaN(seconds)) {
return null;
}
return hours * 3600 + minutes * 60 + seconds;
}
function dateTimeFromVideoPlayerTime(videoPlayerTime) {
const segmentList = getSegmentList();
let segmentStartTime;
let segmentStartISOTime;
for (const segment of segmentList) {
const segmentEndTime = segment.start + segment.duration;
if (videoPlayerTime >= segment.start && videoPlayerTime < segmentEndTime) {
segmentStartTime = segment.start;
segmentStartISOTime = segment.rawProgramDateTime;
break;
}
}
if (segmentStartISOTime === undefined) {
return null;
}
const wubloaderDateTime = DateTime.fromISO(segmentStartISOTime);
const offset = videoPlayerTime - segmentStartTime;
return wubloaderDateTime.plus({ seconds: offset });
}
function videoPlayerTimeFromDateTime(dateTime) {
const segmentTimes = getSegmentTimes();
for (const segmentData of segmentTimes) {
const segmentStart = segmentData.rawStart;
const segmentEnd = segmentData.rawEnd;
if (dateTime >= segmentStart && dateTime <= segmentEnd) {
return segmentData.playerStart + dateTime.diff(segmentStart).as("seconds");
}
}
return null;
}
function videoHumanTimeFromDateTime(dateTime) {
const videoPlayerTime = videoPlayerTimeFromDateTime(dateTime);
if (videoPlayerTime === null) {
return null;
}
return videoHumanTimeFromVideoPlayerTime(videoPlayerTime);
}
function assembleVideoPlaylistURL(basePlaylistURL) {
let playlistURL = basePlaylistURL;
const queryStringParts = startAndEndTimeQueryStringParts();
if (queryStringParts) {
playlistURL += "?" + queryStringParts.join("&");
}
return playlistURL;
}
function startAndEndTimeQueryStringParts() {
const startTime = getStartTime();
const endTime = getEndTime();
let queryStringParts = [];
if (startTime) {
queryStringParts.push(`start=${wubloaderTimeFromDateTime(startTime)}`);
}
if (endTime) {
queryStringParts.push(`end=${wubloaderTimeFromDateTime(endTime)}`);
}
return queryStringParts;
}
function getSegmentList() {
return globalPlayer.latencyController.levelDetails.fragments;
}
function hasSegmentList() {
if (
globalPlayer &&
globalPlayer.latencyController &&
globalPlayer.latencyController.levelDetails &&
globalPlayer.latencyController.levelDetails.fragments
) {
return true;
}
return false;
}
function getSegmentTimes() {
const segmentList = getSegmentList();
const segmentTimes = [];
for (const segment of segmentList) {
const segmentStart = DateTime.fromISO(segment.rawProgramDateTime);
const segmentEnd = segmentStart.plus({ seconds: segment.duration });
segmentTimes.push({ rawStart: segmentStart, rawEnd: segmentEnd, playerStart: segment.start });
}
return segmentTimes;
}
function downloadFrame() {
const videoElement = document.getElementById("video");
const dateTime = dateTimeFromVideoPlayerTime(videoElement.currentTime);
const url = `/frame/${globalStreamName}/source.png?timestamp=${wubloaderTimeFromDateTime(
dateTime
)}`;
// Avoid : as it causes problems on Windows
const filename = `${dateTime.toFormat("yyyy-LL-dd'T'HH-mm-ss.SSS")}.png`;
triggerDownload(url, filename);
}
function triggerDownload(url, filename) {
// URL must be same-origin.
const link = document.createElement("a");
link.setAttribute("download", filename);
link.href = url;
link.setAttribute("target", "_blank");
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}
function sendChatLogLoadData() {
const startTime = globalStartTimeString;
const endTime = globalEndTimeString;
if (!startTime || !endTime) {
return;
}
const segmentMetadata = getSegmentTimes();
for (const segmentData of segmentMetadata) {
segmentData.rawStart = segmentData.rawStart.toMillis();
segmentData.rawEnd = segmentData.rawEnd.toMillis();
}
const message = {
stream: globalStreamName,
start: startTime,
end: endTime,
segmentMetadata: segmentMetadata,
};
globalLoadChatWorker.postMessage(message);
}
function updateChatDataFromWorkerResponse(chatData) {
for (const chatLine of chatData) {
chatLine.when = DateTime.fromMillis(chatLine.when);
}
globalChatData = chatData;
}
function renderChatMessage(chatMessageData) {
const chatMessage = chatMessageData.message;
if (chatMessage.command !== "PRIVMSG" || chatMessage.params[0] !== `#${globalStreamName}`) {
return null;
}
const sendTimeElement = document.createElement("div");
sendTimeElement.classList.add("chat-replay-message-time");
sendTimeElement.innerText = chatMessageData.displayWhen;
const senderNameElement = createMessageSenderElement(chatMessageData);
const messageTextElement = document.createElement("div");
messageTextElement.classList.add("chat-replay-message-text");
if (chatMessage.tags.hasOwnProperty("reply-parent-msg-id")) {
const replyParentID = chatMessage.tags["reply-parent-msg-id"];
const replyParentSender = chatMessage.tags["reply-parent-display-name"];
let replyParentMessageText = chatMessage.tags["reply-parent-msg-body"];
const replyContainer = document.createElement("div");
const replyTextContainer = document.createElement("a");
if (replyParentMessageText.startsWith("\u0001ACTION")) {
replyContainer.classList.add("chat-replay-message-text-action");
const substringEnd = replyParentMessageText.endsWith("\u0001")
? replyParentMessageText.length - 1
: replyParentMessageText;
replyParentMessageText = replyParentMessageText.substring(7, substringEnd);
}
replyTextContainer.href = `#chat-replay-message-${replyParentID}`;
replyTextContainer.innerText = `Replying to ${replyParentSender}: ${replyParentMessageText}`;
replyContainer.appendChild(replyTextContainer);
replyContainer.classList.add("chat-replay-message-reply");
messageTextElement.appendChild(replyContainer);
}
addChatMessageTextToElement(chatMessageData, messageTextElement);
const messageContainer = createMessageContainer(chatMessageData, false);
messageContainer.appendChild(sendTimeElement);
messageContainer.appendChild(senderNameElement);
messageContainer.appendChild(messageTextElement);
return messageContainer;
}
function renderSystemMessages(chatMessageData) {
const chatMessage = chatMessageData.message;
if (chatMessage.command !== "USERNOTICE" || chatMessage.params[0] != `#${globalStreamName}`) {
return [];
}
const messages = [];
const sendTimeElement = document.createElement("div");
sendTimeElement.classList.add("chat-replay-message-time");
sendTimeElement.innerText = chatMessageData.displayWhen;
const systemTextElement = document.createElement("div");
systemTextElement.classList.add("chat-replay-message-text");
systemTextElement.classList.add("chat-replay-message-system");
let systemMsg = chatMessage.tags["system-msg"];
if (!systemMsg && chatMessage.tags["msg-id"] === "announcement") {
systemMsg = "Announcement";
}
systemTextElement.appendChild(document.createTextNode(systemMsg));
const firstMessageContainer = createMessageContainer(chatMessageData, true);
firstMessageContainer.appendChild(sendTimeElement);
firstMessageContainer.appendChild(systemTextElement);
messages.push(firstMessageContainer);
if (chatMessage.params.length === 1) {
return messages;
}
const emptySendTimeElement = document.createElement("div");
emptySendTimeElement.classList.add("chat-replay-message-time");
const senderNameElement = createMessageSenderElement(chatMessageData);
const messageTextElement = document.createElement("div");
messageTextElement.classList.add("chat-replay-message-text");
addChatMessageTextToElement(chatMessageData, messageTextElement);
const secondMessageContainer = createMessageContainer(chatMessageData, false);
secondMessageContainer.appendChild(emptySendTimeElement);
secondMessageContainer.appendChild(senderNameElement);
secondMessageContainer.appendChild(messageTextElement);
messages.push(secondMessageContainer);
return messages;
}
function createMessageContainer(chatMessageData, isSystemMessage) {
const chatMessage = chatMessageData.message;
const messageContainer = document.createElement("div");
messageContainer.classList.add("chat-replay-message");
if (chatMessage.tags.hasOwnProperty("id")) {
if (isSystemMessage) {
messageContainer.id = `chat-replay-message-system-${chatMessage.tags.id}`;
} else {
messageContainer.id = `chat-replay-message-${chatMessage.tags.id}`;
}
}
messageContainer.dataset.sender = chatMessage.sender;
return messageContainer;
}
function getMessageDisplayName(chatMessageData) {
const chatMessage = chatMessageData.message;
if (chatMessage.tags.hasOwnProperty("display-name")) {
return chatMessage.tags["display-name"];
}
return chatMessage.sender;
}
function createMessageSenderElement(chatMessageData) {
const chatMessage = chatMessageData.message;
const senderNameElement = document.createElement("div");
senderNameElement.classList.add("chat-replay-message-sender");
if (chatMessage.tags.hasOwnProperty("color")) {
senderNameElement.style.color = chatMessage.tags.color;
}
senderNameElement.innerText = getMessageDisplayName(chatMessageData);
return senderNameElement;
}
function addChatMessageTextToElement(chatMessageData, messageTextElement) {
const chatMessage = chatMessageData.message;
let chatMessageText = chatMessage.params[1];
if (chatMessageText.startsWith("\u0001ACTION")) {
messageTextElement.classList.add("chat-replay-message-text-action");
const substringEnd = chatMessageText.endsWith("\u0001")
? chatMessageText.length - 1
: chatMessageText.length;
chatMessageText = chatMessageText.substring(7, substringEnd);
}
if (chatMessage.tags.emotes) {
const emoteDataStrings = chatMessage.tags.emotes.split("/");
let emotePositions = [];
for (const emoteDataString of emoteDataStrings) {
const emoteData = emoteDataString.split(":", 2);
const emoteID = emoteData[0];
const emotePositionList = emoteData[1].split(",").map((val) => {
const positions = val.split("-");
return { emote: emoteID, start: +positions[0], end: +positions[1] };
});
emotePositions = emotePositions.concat(emotePositionList);
}
emotePositions.sort((a, b) => a.start - b.start);
let messageText = [chatMessageText];
while (emotePositions.length > 0) {
const emoteData = emotePositions.pop(); // Pop the highest-index element from the array
let text = messageText.shift();
const textAndEmote = [text.substring(0, emoteData.start)];
const emoteImg = document.createElement("img");
emoteImg.src = `https://static-cdn.jtvnw.net/emoticons/v2/${emoteData.emote}/default/dark/1.0`;
const emoteText = text.substring(emoteData.start, emoteData.end + 1);
emoteImg.alt = emoteText;
emoteImg.title = emoteText;
const emoteContainer = document.createElement("span");
emoteContainer.classList.add("chat-replay-message-emote");
emoteContainer.appendChild(emoteImg);
textAndEmote.push(emoteContainer);
const remainingText = text.substring(emoteData.end + 1);
if (remainingText !== "") {
textAndEmote.push(remainingText);
}
messageText = textAndEmote.concat(messageText);
}
for (const messagePart of messageText) {
if (typeof messagePart === "string") {
const node = document.createTextNode(messagePart);
messageTextElement.appendChild(node);
} else {
messageTextElement.appendChild(messagePart);
}
}
} else {
messageTextElement.appendChild(document.createTextNode(chatMessageText));
}
}