m3u8-parser.js
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(function(window) {
var M3U8 = window.videojs.hls.M3U8;
window.videojs.hls.M3U8Parser = function() {
var self = this;
var tagTypes = window.videojs.hls.m3u8TagType;
var lines = [];
var data;
self.getTagType = function( lineData ) {
for ( var s in tagTypes )
{
if (lineData.indexOf(tagTypes[s]) == 0)
{
return tagTypes[s];
}
}
}
self.getTagValue = function ( lineData ) {
for ( var s in tagTypes )
{
if (lineData.indexOf(tagTypes[s]) == 0)
{
return lineData.substr(tagTypes[s].length);
}
}
}
self.parse = function( rawDataString ) {
data = new M3U8();
if( rawDataString != undefined && rawDataString.toString().length > 0 )
{
lines = rawDataString.split('\n');
lines.forEach(
function(value,index) {
switch( self.getTagType(value) )
{
case tagTypes.EXTM3U:
data.hasValidM3UTag = (index == 0);
if(!data.hasValidM3UTag)
{
data.invalidReasons.push("Invalid EXTM3U Tag");
}
break;
case tagTypes.DISCONTINUITY:
break;
case tagTypes.PLAYLIST_TYPE:
if(self.getTagValue(value) == "VOD" || self.getTagValue(value) == "EVENT")
{
data.playlistType = self.getTagValue(value);
data.isPlaylist = true;
} else {
data.invalidReasons.push("Invalid Playlist Type Value");
}
break;
case tagTypes.EXTINF:
var segment = {url: "unknown", byterange: -1, targetDuration: data.targetDuration };
if( self.getTagType(lines[index+1]) == tagTypes.BYTERANGE )
{
segment.byterange = self.getTagValue(lines[index+1]).split('@');
segment.url = lines[index+2];
} else
{
segment.url = lines[index+1];
}
data.mediaItems.push(segment);
break;
case tagTypes.STREAM_INF:
var rendition = {};
var attributes = value.substr(tagTypes.STREAM_INF.length).split(',');
attributes.forEach(function(attr_value,attr_index) {
if(isNaN(attr_value.split('=')[1])){
rendition[attr_value.split('=')[0].toLowerCase()] = attr_value.split('=')[1];
if(rendition[attr_value.split('=')[0].toLowerCase()].split('x').length = 2)
{
rendition.resolution = {
width: Number(rendition[attr_value.split('=')[0].toLowerCase()].split('x')[0]),
height: Number(rendition[attr_value.split('=')[0].toLowerCase()].split('x')[1])
}
}
} else {
rendition[attr_value.split('=')[0].toLowerCase()] = Number(attr_value.split('=')[1]);
}
});
if( self.getTagType(lines[index+1]) == tagTypes.BYTERANGE )
{
rendition.byterange = self.getTagValue(lines[index+1]).split('@');
rendition.url = lines[index+2];
} else
{
rendition.url = lines[index+1];
}
data.isPlaylist = true;
data.playlistItems.push(rendition);
break;
case tagTypes.TARGETDURATION:
data.targetDuration = Number(self.getTagValue(value).split(',')[0]);
break;
case tagTypes.ZEN_TOTAL_DURATION:
data.totalDuration = self.getTagValue(value);
break;
case tagTypes.VERSION:
data.version = Number(self.getTagValue(value));
break;
case tagTypes.MEDIA_SEQUENCE:
data.mediaSequence = parseInt(self.getTagValue(value));
break;
case tagTypes.ALLOW_CACHE:
if(self.getTagValue(value) == "YES" || self.getTagValue(value) == "NO")
{
data.allowCache = self.getTagValue(value);
} else {
data.invalidReasons.push("Invalid ALLOW_CACHE Value");
}
break;
case tagTypes.ENDLIST:
data.hasEndTag = true;
break;
}
}
)
} else {
data.invalidReasons.push("Empty Manifest");
}
return data;
};
};
})(this);