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Code Issues Releases Wiki Activity

https://github.com/WWBN/AVideo/issues/8137

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This commit is contained in:
Daniel Neto 2023-06-30 08:55:17 -03:00
parent 746e163d01
commit 1c7ea28b46
808 changed files with 316395 additions and 381162 deletions
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30
node_modules/mux.js/lib/mp4/probe.js generated vendored
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@ -12,13 +12,15 @@ var toUnsigned = require('../utils/bin').toUnsigned;
var toHexString = require('../utils/bin').toHexString;
var findBox = require('../mp4/find-box.js');
var parseType = require('../mp4/parse-type.js');
var emsg = require('../mp4/emsg.js');
var parseTfhd = require('../tools/parse-tfhd.js');
var parseTrun = require('../tools/parse-trun.js');
var parseTfdt = require('../tools/parse-tfdt.js');
var getUint64 = require('../utils/numbers.js').getUint64;
var timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks,
getTimescaleFromMediaHeader;
getTimescaleFromMediaHeader, getEmsgID3;
var window = require('global/window');
var parseId3Frames = require('../tools/parse-id3.js').parseId3Frames;
/**
@ -370,6 +372,29 @@ getTracks = function(init) {
return tracks;
};
/**
* Returns an array of emsg ID3 data from the provided segmentData.
* An offset can also be provided as the Latest Arrival Time to calculate
* the Event Start Time of v0 EMSG boxes.
* See: https://dashif-documents.azurewebsites.net/Events/master/event.html#Inband-event-timing
*
* @param {Uint8Array} segmentData the segment byte array.
* @param {number} offset the segment start time or Latest Arrival Time,
* @return {Object[]} an array of ID3 parsed from EMSG boxes
*/
getEmsgID3 = function(segmentData, offset = 0) {
var emsgBoxes = findBox(segmentData, ['emsg']);
return emsgBoxes.map((data) => {
var parsedBox = emsg.parseEmsgBox(new Uint8Array(data));
var parsedId3Frames = parseId3Frames(parsedBox.message_data);
return {
cueTime: emsg.scaleTime(parsedBox.presentation_time, parsedBox.timescale, parsedBox.presentation_time_delta, offset),
duration: emsg.scaleTime(parsedBox.event_duration, parsedBox.timescale),
frames: parsedId3Frames
};
});
};
module.exports = {
// export mp4 inspector's findBox and parseType for backwards compatibility
findBox: findBox,
@ -379,5 +404,6 @@ module.exports = {
compositionStartTime: compositionStartTime,
videoTrackIds: getVideoTrackIds,
tracks: getTracks,
getTimescaleFromMediaHeader: getTimescaleFromMediaHeader
getTimescaleFromMediaHeader: getTimescaleFromMediaHeader,
getEmsgID3: getEmsgID3,
};