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Call.svelte
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Call.svelte
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<script>
import { onMount, createEventDispatcher, onDestroy } from "svelte";
const dispatch = createEventDispatcher();
import Controls from "../components/Controls.svelte";
export let url;
export let userName;
const noCallFrameError = "Callframe does not exist.";
let interval;
let callFrame;
let meetingState = "idle";
let stats = {
videoSending: 0,
videoReceiving: 0,
packetLossSend: 0,
packetLossReceive: 0,
};
const IFRAME_OPTIONS = {
height: "auto",
width: "100%",
aspectRatio: 16 / 9,
minWidth: "400px",
maxWidth: "920px",
border: "1px solid var(--grey)",
borderRadius: "4px",
};
const logError = (e) => {
console.error("Something is not right. ", e);
};
const updateMeetingState = (e) => {
meetingState = e.action;
};
const handleLeftMeeting = (e) => {
updateMeetingState(e);
if (interval) clearInterval(interval);
dispatch("left");
};
const handleError = (e) => {
updateMeetingState(e);
if (e.errorMsg) {
dispatch("error", { error: e.errorMsg });
}
};
const toggleCamera = () => {
if (!callFrame) {
logError(noCallFrameError);
return;
}
const localVideo = callFrame.localVideo();
callFrame.setLocalVideo(!localVideo);
};
const toggleMic = () => {
if (!callFrame) {
logError(noCallFrameError);
return;
}
const localVideo = callFrame.localAudio();
callFrame.setLocalAudio(!localVideo);
};
const toggleScreenShare = () => {
/**
* Note: Screen sharing on Firefox has a known bug if
* no Daily Prebuilt user interaction has happened yet.
* (e.g. if the user tries to screen share with the custom
* button before clicking anything in the Daily Prebuilt UI.)
* A fix is on its way! :)
*/
if (!callFrame) {
logError(noCallFrameError);
return;
}
const participants = callFrame.participants();
// stop the screen share if they're currently sharing
// otherwise, start the screen share
participants?.local?.screen
? callFrame.stopScreenShare()
: callFrame.startScreenShare();
};
const goFullscreen = () => {
if (!callFrame) {
logError(noCallFrameError);
return;
}
callFrame.requestFullscreen();
};
const toggleLocalVideo = () => {
if (!callFrame) {
logError(noCallFrameError);
return;
}
const shown = callFrame.showLocalVideo();
callFrame.setShowLocalVideo(!shown);
};
const toggleRemoteVideo = () => {
if (!callFrame) {
logError(noCallFrameError);
return;
}
const shown = callFrame.showParticipantsBar();
callFrame.setShowParticipantsBar(!shown);
};
const getNetworkStats = async () => {
console.log("getting network stats");
if (!callFrame) return;
const newStats = await callFrame.getNetworkStats();
const { latest } = newStats?.stats;
if (!latest) return;
stats.videoSending = latest?.videoSendBitsPerSecond;
stats.videoReceiving = latest?.videoRecvBitsPerSecond;
stats.packetLossSend = latest?.videoSendPacketLoss;
stats.packetLossReceive = latest?.videoRecvPacketLoss;
};
const initializeDaily = async () => {
if (callFrame) {
// if it already exists somehow, destroy the old version and reinitialize
callFrame.destroy();
callFrame = null;
initializeDaily();
}
// select container element to embed Daily iframe in
const container = document.getElementById("container");
// create Daily iframe
callFrame = window.DailyIframe.createFrame(container, {
iframeStyle: IFRAME_OPTIONS,
showLeaveButton: true,
url,
userName,
});
callFrame.on("joining-meeting", updateMeetingState);
callFrame.on("joined-meeting", updateMeetingState);
callFrame.on("left-meeting", handleLeftMeeting);
callFrame.on("error", handleError);
// set up interval for retrieving current network stats
interval = setInterval(() => getNetworkStats(), 5000);
// let the local user join the call, which will cause
// the call to be displayed in our app UI
await callFrame.join();
};
/**
* Called when this component first mounts
*/
onMount(async () => {
// assume if the Call component is showing, we should join
await initializeDaily();
});
/**
* Called when this component is destroyed (when we return to the home screen).
*/
onDestroy(() => {
if (callFrame) {
// remove event listeners
callFrame.off("joining-meeting", updateMeetingState);
callFrame.off("joined-meeting", updateMeetingState);
callFrame.off("left-meeting", handleLeftMeeting);
callFrame.off("error", handleError);
// destroy Daily callframe after call ends
callFrame.destroy();
}
});
</script>
<div
class={meetingState === "joined-meeting"
? "call-screen"
: "call-screen prejoin"}
>
<div id="container" />
<Controls
{url}
{meetingState}
{stats}
on:toggle-camera={toggleCamera}
on:toggle-mic={toggleMic}
on:toggle-screen-share={toggleScreenShare}
on:fullscreen={goFullscreen}
on:toggle-local-video={toggleLocalVideo}
on:toggle-remote-video={toggleRemoteVideo}
/>
</div>
<style>
.call-screen {
padding: 1rem;
display: flex;
max-width: 1200px;
margin: auto;
width: 100%;
}
.prejoin {
flex-direction: column;
}
#container {
flex: 1.5;
padding: 1rem 2rem 1rem 1rem;
display: flex;
justify-content: center;
}
@media only screen and (max-width: 1004px) {
.call-screen {
flex-direction: column;
justify-content: center;
}
}
</style>