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projectx/src/lib/PdfShare.vue

324 lines
13 KiB

<template>
<div style="position: absolute;right: 0;bottom:0;width: 400px;border:1px solid #ccc">
<v-row>
<v-col cols="12" md="10">
<v-file-input ref="file" id="myfile" accept="pdf" label="Please select a file"></v-file-input>
</v-col>
<v-col cols="12" md="2">
<v-btn @click="loadFile" icon><v-icon>mdi-chevron-right</v-icon></v-btn>
</v-col>
</v-row>
<canvas style="zoom:0.3" id="mypdfview"></canvas><br />
<v-btn v-if="pdf && !loading" :disabled="pageNumber ==1" @click="prevPage" icon><v-icon>mdi-chevron-left</v-icon></v-btn>
<span v-if="pdf && !loading">{{pageNumber}} / {{pdf.numPages}}</span>
<v-btn v-if="pdf && !loading" :disabled="pdf.numPages == pageNumber" @click="nextPage" icon><v-icon>mdi-chevron-right</v-icon></v-btn>
<v-row>
<v-col cols="12" md="12">
<v-btn v-if="pdf && !loading" @click="stop">stop pdf share</v-btn>
</v-col>
</v-row>
</div>
</template>
<script>
import pdfjsLib from 'pdfjs-dist/webpack';
import WebRTCAdaptor from "@/lib/webrtc_adaptor";
const toBase64 = file => new Promise((resolve, reject) => {
const reader = new FileReader();
reader.readAsDataURL(file);
reader.onload = () => resolve(reader.result);
reader.onerror = error => reject(error);
});
export default {
name: "PdfShare",
props: {
janusInit: Object,
onstop: Function,
username: String,
myrivid: Number,
streamer:Boolean,
room: Number,
opaqueId:String
},
data: () => ({
pdf:null,
pageNumber:1,
loading:true,
pluginHandle: null
}),
mounted () {
pdfjsLib.GlobalWorkerOptions.workerSrc = "/pdf.worker.js"
},
methods: {
streamerScreenShare(stream) {
let websocketURL = "wss://live.ozgurkon.org/LiveApp/websocket"
var mediaConstraints = {
video: { width: 1280, height: 720 },
audio: false
};
var pc_config = null;
var sdpConstraints = {
OfferToReceiveAudio: false,
OfferToReceiveVideo: false
};
if (this.streamer) {
var tt = this
this.antwrtcScreen = new WebRTCAdaptor({
websocket_url: websocketURL,
mediaConstraints: mediaConstraints,
peerconnection_config: pc_config,
sdp_constraints: sdpConstraints,
janusScreen:stream,
localVideoId: "myvideo2",
debug: true,
callback: function (info, obj) {
if (info == "initialized") {
console.log("initialized");
tt.antwrtcScreen.publish(tt.username+"-pdf", "null");
// start_publish_button.disabled = false;
// stop_publish_button.disabled = true;
} else if (info == "publish_started") {
//stream is being published
console.log("publish started");
// start_publish_button.disabled = true;
// stop_publish_button.disabled = false;
// startAnimation();
} else if (info == "publish_finished") {
//stream is being finished
console.log("publish finished");
this.startPublishing(tt.username + "-pdf");
// start_publish_button.disabled = false;
// stop_publish_button.disabled = true;
} else if (info == "screen_share_extension_available") {
// screen_share_checkbox.disabled = false;
// console.log("screen share extension available");
// install_extension_link.style.display = "none";
} else if (info == "screen_share_stopped") {
console.log("screen share stopped");
} else if (info == "closed") {
//console.log("Connection closed");
if (typeof obj != "undefined") {
console.log("Connecton closed: " + JSON.stringify(obj));
}
} else if (info == "pong") {
//ping/pong message are sent to and received from server to make the connection alive all the time
//It's especially useful when load balancer or firewalls close the websocket connection due to inactivity
} else if (info == "refreshConnection") {
this.startPublishing(tt.username + "-pdf");
} else if (info == "updated_stats") {
//obj is the PeerStats which has fields
//averageOutgoingBitrate - kbits/sec
//currentOutgoingBitrate - kbits/sec
console.log("Average outgoing bitrate " + obj.averageOutgoingBitrate + " kbits/sec"
+ " Current outgoing bitrate: " + obj.currentOutgoingBitrate + " kbits/sec");
}
},
callbackError: function (error, message) {
//some of the possible errors, NotFoundError, SecurityError,PermissionDeniedError
console.log("error callback: " + JSON.stringify(error));
var errorMessage = JSON.stringify(error);
if (typeof message != "undefined") {
errorMessage = message;
}
if (error.indexOf("NotFoundError") != -1) {
errorMessage = "Camera or Mic are not found or not allowed in your device";
} else if (error.indexOf("NotReadableError") != -1 || error.indexOf("TrackStartError") != -1) {
errorMessage = "Camera or Mic is being used by some other process that does not let read the devices";
} else if (error.indexOf("OverconstrainedError") != -1 || error.indexOf("ConstraintNotSatisfiedError") != -1) {
errorMessage = "There is no device found that fits your video and audio constraints. You may change video and audio constraints"
} else if (error.indexOf("NotAllowedError") != -1 || error.indexOf("PermissionDeniedError") != -1) {
errorMessage = "You are not allowed to access camera and mic.";
} else if (error.indexOf("TypeError") != -1) {
errorMessage = "Video/Audio is required";
}
alert(errorMessage);
}
});
}
},
renderPage(pageNumber) {
this.pdf.getPage(pageNumber).then(page => {
console.log('Page loaded');
var scale = 1.0;
var viewport = page.getViewport({scale: scale});
// Prepare canvas using PDF page dimensions
var canvas = document.getElementById('mypdfview');
var context = canvas.getContext('2d');
canvas.height = viewport.height;
canvas.width = viewport.width;
// Render PDF page into canvas context
var renderContext = {
canvasContext: context,
viewport: viewport
};
var renderTask = page.render(renderContext);
renderTask.promise.then( () => {
if (!this.pluginHandle) {
this.loading = false
// document.getElementById('pdfvid').srcObject = document.getElementById('mypdfview').captureStream(60)
this.janusInit.attach(
{
plugin: "janus.plugin.videoroom",
opaqueId: this.opaqueId,
success: this.janusPluginSuccess,
consentDialog: this.consentDialog,
error: this.janusPluginError,
mediaState: this.mediaState,
webrtcState: this.webrtcState,
onmessage: this.janusMessage,
onlocalstream: this.onlocalstream
}
)
}
});
});
},
janusPluginSuccess (pluginHandle) {
this.pluginHandle = pluginHandle
var register = { "request": "join", "room": this.room, "ptype": "publisher", "display": this.username + '- PDF' };
pluginHandle.send({"message": register});
},
stop(){
var unpublish = { "request": "unpublish"};
this.pluginHandle.send({"message": unpublish});
this.pluginHandle.detach();
// reset
this.pluginHandle = null;
this.pdf = null;
this.pageNumber = 1;
this.loading = true;
// callback
this.onstop();
},
janusPluginError (error) {
console.log('error', error)
},
consentDialog () {
},
mediaState (medium, on) {
console.log("Janus " + (on ? "started" : "stopped") + " receiving our " + medium);
},
webrtcState (on) {
this.pluginHandle.send({"message": { "request": "configure", "bitrate": 512*1000 }});
console.log(on, "webrt")
},
janusMessage (msg, jsep) {
console.log(msg)
console.log(jsep)
var event = msg["videoroom"];
if(event != undefined && event != null) {
if (event === "joined") {
this.createStream()
}
}
if(jsep !== undefined && jsep !== null) {
this.pluginHandle.handleRemoteJsep({jsep: jsep});
}
},
createStreamSuccess(jsep) {
console.log('createStreamSuccess')
var publish = { "request": "configure", "audio": false, "video": true };
this.pluginHandle.send({"message": publish, "jsep": jsep});
},
createStream() {
console.log('createStream')
this.pluginHandle.createOffer({
media: { audioRecv: false, videoRecv: false, audioSend: false, videoSend: true }, // Publishers are sendonly
stream: document.getElementById('mypdfview').captureStream(),
success: this.createStreamSuccess,
error: error => {
console.log(error)
alert(error)
}
})
},
pdfTimer () {
// pdf canvas update hack
var canvas = document.getElementById('mypdfview');
var context = canvas.getContext('2d');
var text = '.';
context.font = '25px Arial';
context.fillStyle = '0,0,0';
var x = 0;
var y = 0;
context.fillText(text, x, y);
},
nextPage () {
this.pageNumber++
this.renderPage(this.pageNumber)
},
prevPage () {
this.pageNumber--
this.renderPage(this.pageNumber)
},
onlocalstream (stream) {
// Janus.attachMediaStream($('#myvideo').get(0), stream);
console.log('pdf --------- onlocalstream')
console.log('pdf --------- onlocalstream')
console.log('pdf --------- onlocalstream')
console.log('pdf --------- onlocalstream')
console.log('pdf --------- onlocalstream')
this.streamerScreenShare(stream)
console.log(stream)
},
async loadFile() {
console.log(this.$refs.file.files)
var file = document.querySelector('#myfile').files[0]
var pdfdata = await toBase64(file)
console.log(pdfdata.split('data:application/pdf;base64,')[1])
var loadingTask = pdfjsLib.getDocument({data: atob(pdfdata.split('data:application/pdf;base64,')[1])});
loadingTask.promise.then(pdf => {
console.log(pdf)
// var pageNumber = 1;
this.pdf = pdf
this.loading = true
setInterval(this.pdfTimer, 1000/15)
this.renderPage(1)
})
}
}
}
</script>
<style scoped>
</style>