Allow changing volume media player entity

src/data/media-player.ts

@@ -360,3 +360,17 @@ export const cleanupMediaTitle = (title?: string): string | undefined => {
   const index = title.indexOf("?authSig=");
   return index > 0 ? title.slice(0, index) : title;
 };
+
+/**
+ * Set volume of a media player entity.
+ * @param hass Home Assistant object
+ * @param entity_id entity ID of media player
+ * @param volume_level number between 0..1
+ * @returns
+ */
+export const setMediaPlayerVolume = (
+  hass: HomeAssistant,
+  entity_id: string,
+  volume_level: number
+) =>
+  hass.callService("media_player", "volume_set", { entity_id, volume_level });

src/panels/media-browser/browser-media-player.ts

@@ -4,6 +4,7 @@ import {
   MediaPlayerItem,
   SUPPORT_PAUSE,
   SUPPORT_PLAY,
+  SUPPORT_VOLUME_SET,
 } from "../../data/media-player";
 import { ResolvedMediaSource } from "../../data/media_source";
 import { HomeAssistant } from "../../types";
@@ -20,9 +21,11 @@ export class BrowserMediaPlayer {
     public hass: HomeAssistant,
     public item: MediaPlayerItem,
     public resolved: ResolvedMediaSource,
+    volume: number,
     private onChange: () => void
   ) {
     const player = new Audio(this.resolved.url);
+    player.volume = volume;
     player.addEventListener("play", this._handleChange);
     player.addEventListener("playing", () => {
       this.buffering = false;
@@ -57,6 +60,11 @@ export class BrowserMediaPlayer {
     this.player.play();
   }
 
+  public setVolume(volume: number) {
+    this.player.volume = volume;
+    this.onChange();
+  }
+
   public remove() {
     this._removed = true;
     // @ts-ignore
@@ -89,8 +97,9 @@ export class BrowserMediaPlayer {
     base.attributes = {
       media_title: this.item.title,
       entity_picture: this.item.thumbnail,
+      volume_level: this.player.volume,
       // eslint-disable-next-line no-bitwise
-      supported_features: SUPPORT_PLAY | SUPPORT_PAUSE,
+      supported_features: SUPPORT_PLAY | SUPPORT_PAUSE | SUPPORT_VOLUME_SET,
     };
 
     if (this.player.duration) {

src/panels/media-browser/ha-bar-media-player.ts

@@ -9,6 +9,7 @@ import {
   mdiPlay,
   mdiPlayPause,
   mdiStop,
+  mdiVolumeHigh,
 } from "@mdi/js";
 import {
   css,
@@ -40,10 +41,12 @@ import {
   getCurrentProgress,
   MediaPlayerEntity,
   MediaPlayerItem,
+  setMediaPlayerVolume,
   SUPPORT_BROWSE_MEDIA,
   SUPPORT_PAUSE,
   SUPPORT_PLAY,
   SUPPORT_STOP,
+  SUPPORT_VOLUME_SET,
 } from "../../data/media-player";
 import { ResolvedMediaSource } from "../../data/media_source";
 import type { HomeAssistant } from "../../types";
@@ -77,6 +80,8 @@ export class BarMediaPlayer extends LitElement {
 
   private _progressInterval?: number;
 
+  private _browserPlayerVolume = 0.8;
+
   public connectedCallback(): void {
     super.connectedCallback();
 
@@ -124,6 +129,7 @@ export class BarMediaPlayer extends LitElement {
       this.hass,
       item,
       resolved,
+      this._browserPlayerVolume,
       () => this.requestUpdate("_browserPlayer")
     );
     this._newMediaExpected = false;
@@ -230,7 +236,7 @@ export class BarMediaPlayer extends LitElement {
                           )}
                           .path=${control.icon}
                           action=${control.action}
-                          @click=${this._handleClick}
+                          @click=${this._handleControlClick}
                         >
                         </ha-icon-button>
                       `
@@ -257,6 +263,27 @@ export class BarMediaPlayer extends LitElement {
     const isBrowser = this.entityId === BROWSER_PLAYER;
     return html`
     <div class="choose-player ${isBrowser ? "browser" : ""}">
+      ${
+        stateObj && supportsFeature(stateObj, SUPPORT_VOLUME_SET)
+          ? html`
+              <ha-button-menu corner="BOTTOM_START">
+                <ha-icon-button
+                  slot="trigger"
+                  .path=${mdiVolumeHigh}
+                ></ha-icon-button>
+                <ha-slider
+                  min="0"
+                  max="100"
+                  step="1"
+                  .value=${stateObj.attributes.volume_level! * 100}
+                  @change=${this._handleVolumeChange}
+                >
+                </ha-slider>
+              </ha-button-menu>
+            `
+          : ""
+      }
+
           <ha-button-menu corner="BOTTOM_START">
             ${
               this.narrow
@@ -441,7 +468,7 @@ export class BarMediaPlayer extends LitElement {
     }
   }
 
-  private _handleClick(e: MouseEvent): void {
+  private _handleControlClick(e: MouseEvent): void {
     const action = (e.currentTarget! as HTMLElement).getAttribute("action")!;
 
     if (!this._browserPlayer) {
@@ -474,6 +501,17 @@ export class BarMediaPlayer extends LitElement {
     fireEvent(this, "player-picked", { entityId });
   }
 
+  private async _handleVolumeChange(ev) {
+    ev.stopPropagation();
+    const value = Number(ev.target.value) / 100;
+    if (this._browserPlayer) {
+      this._browserPlayerVolume = value;
+      this._browserPlayer.setVolume(value);
+    } else {
+      await setMediaPlayerVolume(this.hass, this.entityId, value);
+    }
+  }
+
   static get styles(): CSSResultGroup {
     return css`
       :host {