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Embed: mews: more anti seek loop fixes, more track switching logging

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Cat 2021-09-23 13:22:08 +02:00
parent 33a8e1b846
commit 854315afdd
2 changed files with 31 additions and 11 deletions
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2
embed/min/wrappers/mews.js
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40
embed/wrappers/mews.js
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@ -190,7 +190,6 @@ p.prototype.build = function (MistVideo,callback) {
//save the current source buffer codecs //save the current source buffer codecs
player.sb._codecs = codecs; player.sb._codecs = codecs;
player.sb._duration = 1;
player.sb._size = 0; player.sb._size = 0;
player.sb.queue = []; player.sb.queue = [];
var do_on_updateend = []; var do_on_updateend = [];
@ -468,8 +467,8 @@ p.prototype.build = function (MistVideo,callback) {
break; break;
} }
if (player.sb._duration != msg.data.end*1e-3) { if (lastduration != msg.data.end*1e-3) {
player.sb._duration = msg.data.end*1e-3; lastduration = msg.data.end*1e-3;
MistUtil.event.send("durationchange",null,MistVideo.video); MistUtil.event.send("durationchange",null,MistVideo.video);
} }
MistVideo.info.meta.buffer_window = msg.data.end - msg.data.begin; MistVideo.info.meta.buffer_window = msg.data.end - msg.data.begin;
@ -485,6 +484,11 @@ p.prototype.build = function (MistVideo,callback) {
video.playbackRate *= requested_rate; video.playbackRate *= requested_rate;
MistVideo.log("Our buffer ("+Math.round(buffer)+"ms) is big (>"+Math.round(desiredBufferwithJitter*2)+"ms), so increase the playback speed to "+(Math.round(requested_rate*100)/100)+" to catch up."); MistVideo.log("Our buffer ("+Math.round(buffer)+"ms) is big (>"+Math.round(desiredBufferwithJitter*2)+"ms), so increase the playback speed to "+(Math.round(requested_rate*100)/100)+" to catch up.");
} }
else if (buffer < 0) {
requested_rate = 0.8;
video.playbackRate *= requested_rate;
MistVideo.log("Our buffer ("+Math.round(buffer)+"ms) is negative so decrease the playback speed to "+(Math.round(requested_rate*100)/100)+" to let it catch up.");
}
else if (buffer < desiredBuffer/2) { else if (buffer < desiredBuffer/2) {
requested_rate = 1 + Math.min(1,((buffer-desiredBuffer)/desiredBuffer))*0.08; requested_rate = 1 + Math.min(1,((buffer-desiredBuffer)/desiredBuffer))*0.08;
video.playbackRate *= requested_rate; video.playbackRate *= requested_rate;
@ -621,7 +625,7 @@ p.prototype.build = function (MistVideo,callback) {
//play out buffer, then when we reach the starting timestamp of the new data, reset the source buffers //play out buffer, then when we reach the starting timestamp of the new data, reset the source buffers
var clear = function(){ var clear = function(){
//once the source buffer is done updating the current segment, clear the specified interval from the buffer //once the source buffer is done updating the current segment, clear the specified interval from the buffer
currPos = video.currentTime; currPos = video.currentTime.toFixed(3);
if (player && player.sb) { if (player && player.sb) {
player.sb._do(function(remaining_do_on_updateend){ player.sb._do(function(remaining_do_on_updateend){
if (!player.sb.updating) { if (!player.sb.updating) {
@ -656,7 +660,7 @@ p.prototype.build = function (MistVideo,callback) {
} }
video.currentTime = t; video.currentTime = t;
MistVideo.log("Setting playback position to "+MistUtil.format.time(t,{ms:true})); MistVideo.log("Setting playback position to "+MistUtil.format.time(t,{ms:true}));
if (video.currentTime < t) { if (video.currentTime.toFixed(3) < t) {
player.sb._doNext(f); player.sb._doNext(f);
if (player.debugging) { console.log("Could not set playback position"); } if (player.debugging) { console.log("Could not set playback position"); }
} }
@ -710,6 +714,7 @@ p.prototype.build = function (MistVideo,callback) {
if (player.debugging) { if (player.debugging) {
console.warn("reached switching point",msg.data.current*1e-3,MistUtil.format.time(msg.data.current*1e-3)); console.warn("reached switching point",msg.data.current*1e-3,MistUtil.format.time(msg.data.current*1e-3));
} }
MistVideo.log("Track switch: reached switching point");
clear(); clear();
} }
if (video.currentTime == 0) { if (video.currentTime == 0) {
@ -717,6 +722,8 @@ p.prototype.build = function (MistVideo,callback) {
} }
else { else {
if (msg.data.current >= video.currentTime*1e3) { if (msg.data.current >= video.currentTime*1e3) {
MistVideo.log("Track switch: waiting for playback to reach the switching point ("+MistUtil.format.time(msg.data.current*1e-3,{ms:true})+")");
//wait untill the video has reached the time of the newly received track or the end of our buffer //wait untill the video has reached the time of the newly received track or the end of our buffer
var ontime = MistUtil.event.addListener(video,"timeupdate",function(){ var ontime = MistUtil.event.addListener(video,"timeupdate",function(){
if (msg.data.current < video.currentTime * 1e3) { if (msg.data.current < video.currentTime * 1e3) {
@ -736,6 +743,7 @@ p.prototype.build = function (MistVideo,callback) {
else { else {
//subscribe to on_time, wait until we've received current playback point //subscribe to on_time, wait until we've received current playback point
//if we don't wait, the screen will go black until the buffer is full enough //if we don't wait, the screen will go black until the buffer is full enough
MistVideo.log("Track switch: waiting for the received data to reach the current playback point");
var ontime = function(newmsg){ var ontime = function(newmsg){
if (newmsg.data.current >= video.currentTime*1e3) { if (newmsg.data.current >= video.currentTime*1e3) {
reachedSwitchingPoint(newmsg); reachedSwitchingPoint(newmsg);
@ -958,6 +966,11 @@ p.prototype.build = function (MistVideo,callback) {
return video.currentTime; return video.currentTime;
}, },
set: function(value){ set: function(value){
//console.warn("seek to",value);
if (isNaN(value) || (value < 0)) {
MistVideo.log("Ignoring seek to "+value+" because ewww.");
return;
}
MistUtil.event.send("seeking",value,video); MistUtil.event.send("seeking",value,video);
send({type: "seek", seek_time: Math.round(Math.max(0,value*1e3-(250+player.ws.serverDelay.get())))}); //safety margin for server latency send({type: "seek", seek_time: Math.round(Math.max(0,value*1e3-(250+player.ws.serverDelay.get())))}); //safety margin for server latency
//set listener "seek" //set listener "seek"
@ -966,12 +979,18 @@ p.prototype.build = function (MistVideo,callback) {
var ontime = function(e){ var ontime = function(e){
player.ws.removeListener("on_time",ontime); player.ws.removeListener("on_time",ontime);
//in the first on_time, assume that the data were getting is where we want to be //in the first on_time, assume that the data were getting is where we want to be
value = (e.data.current*1e-3).toFixed(3); value = e.data.current * 1e-3;
value = value.toFixed(3);
//retry a max of 10 times
var retries = 10;
var f = function() { var f = function() {
video.currentTime = value; video.currentTime = value;
if (video.currentTime.toFixed(3) != value) { if (video.currentTime.toFixed(3) < value) {
MistVideo.log("Failed to seek, wanted:",value,"got:",video.currentTime.toFixed(3)); MistVideo.log("Failed to seek, wanted: "+value+" got: "+video.currentTime.toFixed(3));
player.sb._doNext(f); if (retries >= 0) {
retries--;
player.sb._doNext(f);
}
} }
} }
f(); f();
@ -984,9 +1003,10 @@ p.prototype.build = function (MistVideo,callback) {
} }
}); });
//override duration //override duration
var lastduration = 1;
Object.defineProperty(this.api,"duration",{ Object.defineProperty(this.api,"duration",{
get: function(){ get: function(){
return player.sb ? player.sb._duration : 1; return lastduration;
} }
}); });
Object.defineProperty(this.api,"playbackRate",{ Object.defineProperty(this.api,"playbackRate",{