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This commit is contained in:
DanieL 2022-08-24 16:05:41 -03:00
parent 6efee3a800
commit 051401c6fc
803 changed files with 70126 additions and 6014 deletions
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39
node_modules/hls.js/src/utils/webvtt-parser.ts generated vendored
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@ -12,16 +12,18 @@ const startsWith = function (
searchString: string,
position: number = 0
) {
return inputString.substr(position, searchString.length) === searchString;
return (
inputString.slice(position, position + searchString.length) === searchString
);
};
const cueString2millis = function (timeString: string) {
let ts = parseInt(timeString.substr(-3));
const secs = parseInt(timeString.substr(-6, 2));
const mins = parseInt(timeString.substr(-9, 2));
let ts = parseInt(timeString.slice(-3));
const secs = parseInt(timeString.slice(-6, -4));
const mins = parseInt(timeString.slice(-9, -7));
const hours =
timeString.length > 9
? parseInt(timeString.substr(0, timeString.indexOf(':')))
? parseInt(timeString.substring(0, timeString.indexOf(':')))
: 0;
if (
@ -109,7 +111,6 @@ export function parseWebVTT(
let timestampMapLOCAL = 0;
let parsingError: Error;
let inHeader = true;
let timestampMap = false;
parser.oncue = function (cue: VTTCue) {
// Adjust cue timing; clamp cues to start no earlier than - and drop cues that don't end after - 0 on timeline.
@ -134,16 +135,14 @@ export function parseWebVTT(
cueOffset = webVttMpegTsMapOffset - vttCCs.presentationOffset;
}
if (timestampMap) {
const duration = cue.endTime - cue.startTime;
const startTime =
normalizePts(
(cue.startTime + cueOffset - timestampMapLOCAL) * 90000,
timeOffset * 90000
) / 90000;
cue.startTime = startTime;
cue.endTime = startTime + duration;
}
const duration = cue.endTime - cue.startTime;
const startTime =
normalizePts(
(cue.startTime + cueOffset - timestampMapLOCAL) * 90000,
timeOffset * 90000
) / 90000;
cue.startTime = Math.max(startTime, 0);
cue.endTime = Math.max(startTime + duration, 0);
//trim trailing webvtt block whitespaces
const text = cue.text.trim();
@ -180,23 +179,21 @@ export function parseWebVTT(
if (startsWith(line, 'X-TIMESTAMP-MAP=')) {
// Once found, no more are allowed anyway, so stop searching.
inHeader = false;
timestampMap = true;
// Extract LOCAL and MPEGTS.
line
.substr(16)
.slice(16)
.split(',')
.forEach((timestamp) => {
if (startsWith(timestamp, 'LOCAL:')) {
cueTime = timestamp.substr(6);
cueTime = timestamp.slice(6);
} else if (startsWith(timestamp, 'MPEGTS:')) {
timestampMapMPEGTS = parseInt(timestamp.substr(7));
timestampMapMPEGTS = parseInt(timestamp.slice(7));
}
});
try {
// Convert cue time to seconds
timestampMapLOCAL = cueString2millis(cueTime) / 1000;
} catch (error) {
timestampMap = false;
parsingError = error;
}
// Return without parsing X-TIMESTAMP-MAP line.