Add code for server to client case

frontend/Index.svelte

@@ -5,11 +5,12 @@
 	import Video from "./shared/InteractiveVideo.svelte";
 	import { StatusTracker } from "@gradio/statustracker";
 	import type { LoadingStatus } from "@gradio/statustracker";
+	import StaticVideo from "./shared/StaticVideo.svelte";
 
 	export let elem_id = "";
 	export let elem_classes: string[] = [];
 	export let visible = true;
-	export let value: string;
+	export let value: string = "__webrtc_value__";
 
 	export let label: string;
 	export let root: string;
@@ -27,22 +28,7 @@
 	export let gradio;
 	export let rtc_configuration: Object;
 	export let time_limit: number | null = null;
-	// export let gradio: Gradio<{
-	// 	change: never;
-	// 	clear: never;
-	// 	play: never;
-	// 	pause: never;
-	// 	upload: never;
-	// 	stop: never;
-	// 	end: never;
-	// 	start_recording: never;
-	// 	stop_recording: never;
-	// 	share: ShareData;
-	// 	error: string;
-	// 	warning: string;
-	// 	clear_status: LoadingStatus;
-	// 	tick: never;
-	// }>;
+	export let mode: "video-in-out" | "video-out" = "video-in-out";
 
 	let dragging = false;
 
@@ -71,30 +57,40 @@
 		on:clear_status={() => gradio.dispatch("clear_status", loading_status)}
 	/>
 
-	<Video
-		bind:value={value}
-		{label}
-		{show_label}
-		active_source={"webcam"}
-		include_audio={false}
-		{root}
-		{server}
-		{rtc_configuration}
-		{time_limit}
-		on:clear={() => gradio.dispatch("clear")}
-		on:play={() => gradio.dispatch("play")}
-		on:pause={() => gradio.dispatch("pause")}
-		on:upload={() => gradio.dispatch("upload")}
-		on:stop={() => gradio.dispatch("stop")}
-		on:end={() => gradio.dispatch("end")}
-		on:start_recording={() => gradio.dispatch("start_recording")}
-		on:stop_recording={() => gradio.dispatch("stop_recording")}
-		on:tick={() => gradio.dispatch("tick")}
-		on:error={({ detail }) => gradio.dispatch("error", detail)}
-		i18n={gradio.i18n}
-		stream_handler={(...args) => gradio.client.stream(...args)}
-	>
-		<UploadText i18n={gradio.i18n} type="video" />
-	</Video>
+	{#if mode === "video-out"}
+		<StaticVideo
+			bind:value={value}
+			{label}
+			{show_label}
+			{server}
+			{rtc_configuration}
+			on:tick={() => gradio.dispatch("tick")}
+			on:error={({ detail }) => gradio.dispatch("error", detail)}
+		/>
+	{:else}
+		<Video
+			bind:value={value}
+			{label}
+			{show_label}
+			active_source={"webcam"}
+			include_audio={false}
+			{server}
+			{rtc_configuration}
+			{time_limit}
+			on:clear={() => gradio.dispatch("clear")}
+			on:play={() => gradio.dispatch("play")}
+			on:pause={() => gradio.dispatch("pause")}
+			on:upload={() => gradio.dispatch("upload")}
+			on:stop={() => gradio.dispatch("stop")}
+			on:end={() => gradio.dispatch("end")}
+			on:start_recording={() => gradio.dispatch("start_recording")}
+			on:stop_recording={() => gradio.dispatch("stop_recording")}
+			on:tick={() => gradio.dispatch("tick")}
+			on:error={({ detail }) => gradio.dispatch("error", detail)}
+			i18n={gradio.i18n}
+			stream_handler={(...args) => gradio.client.stream(...args)}
+		>
+			<UploadText i18n={gradio.i18n} type="video" />
+		</Video>
+	{/if}
 </Block>
-<!-- {/if} -->

frontend/shared/StaticVideo.svelte

@@ -0,0 +1,124 @@
+<script lang="ts">
+	import { createEventDispatcher, afterUpdate, tick } from "svelte";
+	import {
+		BlockLabel,
+		Empty
+	} from "@gradio/atoms";
+	import { Video } from "@gradio/icons";
+
+	import { start, stop } from "./webrtc_utils";
+
+
+	export let value: string | null = null;
+	export let label: string | undefined = undefined;
+	export let show_label = true;
+	export let rtc_configuration: Object | null = null;
+	export let server: {
+		offer: (body: any) => Promise<any>;
+	};
+
+    let video_element: HTMLVideoElement;
+
+	let _webrtc_id = Math.random().toString(36).substring(2);
+
+	let pc: RTCPeerConnection;
+	
+	const dispatch = createEventDispatcher<{
+		error: string;
+		tick: undefined;
+	}>();
+	
+	let stream_state = "closed";
+	window.setInterval(() => {
+        if (stream_state == "open") {
+            dispatch("tick");
+        }
+    }, 1000);
+
+
+
+	$: console.log("static video value", value);
+	$: if( value === "start_webrtc_stream") {
+		value = _webrtc_id;
+		const fallback_config = {
+                iceServers: [
+                    {
+                        urls: 'stun:stun.l.google.com:19302'
+                    }
+                ]
+            };
+            const configuration = rtc_configuration || fallback_config;
+            console.log("config", configuration);
+            pc = new RTCPeerConnection(configuration);
+            pc.addEventListener("connectionstatechange",
+                async (event) => {
+                   switch(pc.connectionState) {
+                        case "connected":
+                            console.log("connected");
+							stream_state = "open";
+                            break;
+                        case "disconnected":
+                            console.log("closed");
+							stop(pc);
+                            break;
+                        default:
+                            break;
+                   }
+                }
+            )
+		start(null, pc, video_element, server.offer, _webrtc_id).then((connection) => {
+				pc = connection;
+			}).catch(() => {
+                console.log("catching")
+                dispatch("error", "Too many concurrent users. Come back later!");
+            });
+	}
+
+
+</script>
+
+<div class="wrap">
+	<BlockLabel {show_label} Icon={Video} label={label || "Video"} />
+	{#if value === "__webrtc_value__"}
+		<Empty unpadded_box={true} size="large"><Video /></Empty>
+	{/if}
+		<video
+		class:hidden={value === "__webrtc_value__"}
+		bind:this={video_element}
+		autoplay={true}
+		on:loadeddata={dispatch.bind(null, "loadeddata")}
+		on:click={dispatch.bind(null, "click")}
+		on:play={dispatch.bind(null, "play")}
+		on:pause={dispatch.bind(null, "pause")}
+		on:ended={dispatch.bind(null, "ended")}
+		on:mouseover={dispatch.bind(null, "mouseover")}
+		on:mouseout={dispatch.bind(null, "mouseout")}
+		on:focus={dispatch.bind(null, "focus")}
+		on:blur={dispatch.bind(null, "blur")}
+		on:load
+		data-testid={$$props["data-testid"]}
+		crossorigin="anonymous"
+	>
+		<track kind="captions" />
+	</video>
+</div>
+
+
+
+<style>
+	.hidden {
+		display: none;
+	}
+
+	.wrap {
+		position: relative;
+		background-color: var(--background-fill-secondary);
+		height: var(--size-full);
+		width: var(--size-full);
+		border-radius: var(--radius-xl);
+	}
+	.wrap :global(video) {
+		height: var(--size-full);
+		width: var(--size-full);
+	}
+</style>

frontend/shared/Webcam.svelte

@@ -161,7 +161,6 @@
 	
     window.setInterval(() => {
         if (stream_state == "open") {
-            console.log("dispatching tick");
             dispatch("tick");
         }
     }, stream_every * 1000);