1 files changed, 49 insertions, 6 deletions
diff --git a/client-web/source/resource/track.ts b/client-web/source/resource/track.ts
index 7d53522..22af16f 100644
--- a/client-web/source/resource/track.ts
+++ b/client-web/source/resource/track.ts
@@ -5,7 +5,7 @@
 */
 /// <reference lib="dom" />
 import { ProvideInfo } from "../../../common/packets.d.ts";
-import { ebutton, ediv } from "../helper.ts";
+import { ebutton, ediv, elabel } from "../helper.ts";
 import { log } from "../logger.ts";
 import { on_pref_changed, PREFS } from "../preferences/mod.ts";
 import { get_rnnoise_node } from "../rnnoise.ts";
@@ -48,11 +48,12 @@ export const resource_track: ResourceHandlerDecl = {
     }
 }
 
-export function new_local_track(info: ProvideInfo, track: TrackHandle): LocalResource {
+export function new_local_track(info: ProvideInfo, track: TrackHandle, ...extra_controls: HTMLElement[]): LocalResource {
     return {
         info,
         el: ediv({},
-            create_track_display(track)
+            create_track_display(track),
+            ...extra_controls
         ),
         destroy() { track.end() },
         on_request(_user, _create_channel) {
@@ -62,24 +63,55 @@ export function new_local_track(info: ProvideInfo, track: TrackHandle): LocalRes
 }
 
 function create_track_display(track: TrackHandle): HTMLElement {
-    const el = document.createElement("div")
     const is_video = track.kind == "video"
-    const media_el = is_video ? document.createElement("video") : document.createElement("audio")
+    const is_audio = track.kind == "audio"
+
     const stream = new MediaStream([track.track])
+
+    const el = document.createElement("div")
+
+    const media_el = is_video
+        ? document.createElement("video")
+        : document.createElement("audio")
+
     media_el.srcObject = stream
     media_el.classList.add("media")
     media_el.autoplay = true
     media_el.controls = true
     media_el.addEventListener("pause", () => media_el.play())
+
     if (track.local) media_el.muted = true
     el.append(media_el)
     track.addEventListener("ended", () => {
         media_el.srcObject = null // TODO // TODO figure out why i wrote todo here
         el.remove()
     })
+
+    if (is_audio && PREFS.audio_activity_threshold !== undefined) check_volume(stream, vol => {
+        const active = vol > PREFS.audio_activity_threshold
+        if (active != el.classList.contains("audio-active")) {
+            if (active) el.classList.add("audio-active")
+            else el.classList.remove("audio-active")
+        }
+    })
+
     return el
 }
 
+function check_volume(track: MediaStream, cb: (vol: number) => void) {
+    const ctx = new AudioContext();
+    const s = ctx.createMediaStreamSource(track)
+    const a = ctx.createAnalyser()
+    s.connect(a)
+    const samples = new Float32Array(a.fftSize);
+    setInterval(() => {
+        a.getFloatTimeDomainData(samples);
+        let sum = 0.0;
+        for (const amplitude of samples) { sum += amplitude * amplitude; }
+        cb(Math.sqrt(sum / samples.length))
+    }, 1000 / 15)
+}
+
 export async function create_camera_res() {
     log("media", "requesting user media (camera)")
     const user_media = await window.navigator.mediaDevices.getUserMedia({
@@ -141,5 +173,16 @@ export async function create_mic_res() {
         clear_gain_cb()
         destination.disconnect()
     })
-    return new_local_track({ id: t.id, kind: "track", track_kind: "audio", label: "Microphone" }, t)
+
+    const mute = document.createElement("input")
+    mute.type = "checkbox"
+    mute.onchange = () => {
+        log("media", mute.checked ? "muted" : "unmuted")
+        if (mute.checked) gain.gain.value = Number.MIN_VALUE
+        else gain.gain.value = PREFS.microphone_gain
+    }
+    const mute_label = elabel("Mute", { class: "check-button" })
+    mute_label.prepend(mute)
+
+    return new_local_track({ id: t.id, kind: "track", track_kind: "audio", label: "Microphone" }, t, mute_label)
 }