1.0.0 • Published 7 months ago

google-realtime-embed v1.0.0

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License
MIT
Repository
github
Last release
7 months ago

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src/lib/multimodal-live-client.ts /**

  • Copyright 2024 Google LLC
  • Licensed under the Apache License, Version 2.0 (the "License");
  • you may not use this file except in compliance with the License.
  • You may obtain a copy of the License at
  • http://www.apache.org/licenses/LICENSE-2.0
  • Unless required by applicable law or agreed to in writing, software
  • distributed under the License is distributed on an "AS IS" BASIS,
  • WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  • See the License for the specific language governing permissions and
  • limitations under the License. */

import { Content, GenerativeContentBlob, Part } from "@google/generative-ai"; import { EventEmitter } from "eventemitter3"; import { difference } from "lodash"; import { ClientContentMessage, isInterrupted, isModelTurn, isServerContenteMessage, isSetupCompleteMessage, isToolCallCancellationMessage, isToolCallMessage, isTurnComplete, LiveIncomingMessage, ModelTurn, RealtimeInputMessage, ServerContent, SetupMessage, StreamingLog, ToolCall, ToolCallCancellation, ToolResponseMessage, type LiveConfig, } from "../multimodal-live-types"; import { blobToJSON, base64ToArrayBuffer } from "./utils";

/**

  • the events that this client will emit */ interface MultimodalLiveClientEventTypes { open: () => void; log: (log: StreamingLog) => void; close: (event: CloseEvent) => void; audio: (data: ArrayBuffer) => void; content: (data: ServerContent) => void; interrupted: () => void; setupcomplete: () => void; turncomplete: () => void; toolcall: (toolCall: ToolCall) => void; toolcallcancellation: (toolcallCancellation: ToolCallCancellation) => void; }

export type MultimodalLiveAPIClientConnection = { url?: string; apiKey: string; };

/**

  • A event-emitting class that manages the connection to the websocket and emits
  • events to the rest of the application.
  • If you dont want to use react you can still use this. */ export class MultimodalLiveClient extends EventEmitter { public ws: WebSocket | null = null; protected config: LiveConfig | null = null; public url: string = ""; public getConfig() { return { ...this.config }; }

    constructor({ url, apiKey }: MultimodalLiveAPIClientConnection) { super(); url = url || wss://generativelanguage.googleapis.com/ws/google.ai.generativelanguage.v1alpha.GenerativeService.BidiGenerateContent; url += ?key=${apiKey}; this.url = url; this.send = this.send.bind(this); }

    log(type: string, message: StreamingLog"message") { const log: StreamingLog = { date: new Date(), type, message, }; this.emit("log", log); }

    connect(config: LiveConfig): Promise { this.config = config;

    const ws = new WebSocket(this.url);
    
    ws.addEventListener("message", async (evt: MessageEvent) => {
      if (evt.data instanceof Blob) {
        this.receive(evt.data);
      } else {
        console.log("non blob message", evt);
      }
    });
    return new Promise((resolve, reject) => {
      const onError = (ev: Event) => {
        this.disconnect(ws);
        const message = `Could not connect to "${this.url}"`;
        this.log(`server.${ev.type}`, message);
        reject(new Error(message));
      };
      ws.addEventListener("error", onError);
      ws.addEventListener("open", (ev: Event) => {
        if (!this.config) {
          reject("Invalid config sent to `connect(config)`");
          return;
        }
        this.log(`client.${ev.type}`, `connected to socket`);
        this.emit("open");
    
        this.ws = ws;
    
        const setupMessage: SetupMessage = {
          setup: this.config,
        };
        this._sendDirect(setupMessage);
        this.log("client.send", "setup");
    
        ws.removeEventListener("error", onError);
        ws.addEventListener("close", (ev: CloseEvent) => {
          console.log(ev);
          this.disconnect(ws);
          let reason = ev.reason || "";
          if (reason.toLowerCase().includes("error")) {
            const prelude = "ERROR]";
            const preludeIndex = reason.indexOf(prelude);
            if (preludeIndex > 0) {
              reason = reason.slice(
                preludeIndex + prelude.length + 1,
                Infinity,
              );
            }
          }
          this.log(
            `server.${ev.type}`,
            `disconnected ${reason ? `with reason: ${reason}` : ``}`,
          );
          this.emit("close", ev);
        });
        resolve(true);
      });
    });

    }

    disconnect(ws?: WebSocket) { // could be that this is an old websocket and theres already a new instance // only close it if its still the correct reference if ((!ws || this.ws === ws) && this.ws) { this.ws.close(); this.ws = null; this.log("client.close", Disconnected); return true; } return false; }

    protected async receive(blob: Blob) { const response: LiveIncomingMessage = (await blobToJSON( blob, )) as LiveIncomingMessage; if (isToolCallMessage(response)) { this.log("server.toolCall", response); this.emit("toolcall", response.toolCall); return; } if (isToolCallCancellationMessage(response)) { this.log("receive.toolCallCancellation", response); this.emit("toolcallcancellation", response.toolCallCancellation); return; }

    if (isSetupCompleteMessage(response)) {
      this.log("server.send", "setupComplete");
      this.emit("setupcomplete");
      return;
    }
    
    // this json also might be `contentUpdate { interrupted: true }`
    // or contentUpdate { end_of_turn: true }
    if (isServerContenteMessage(response)) {
      const { serverContent } = response;
      if (isInterrupted(serverContent)) {
        this.log("receive.serverContent", "interrupted");
        this.emit("interrupted");
        return;
      }
      if (isTurnComplete(serverContent)) {
        this.log("server.send", "turnComplete");
        this.emit("turncomplete");
        //plausible theres more to the message, continue
      }
    
      if (isModelTurn(serverContent)) {
        let parts: Part[] = serverContent.modelTurn.parts;
    
        // when its audio that is returned for modelTurn
        const audioParts = parts.filter(
          (p) => p.inlineData && p.inlineData.mimeType.startsWith("audio/pcm"),
        );
        const base64s = audioParts.map((p) => p.inlineData?.data);
    
        // strip the audio parts out of the modelTurn
        const otherParts = difference(parts, audioParts);
        // console.log("otherParts", otherParts);
    
        base64s.forEach((b64) => {
          if (b64) {
            const data = base64ToArrayBuffer(b64);
            this.emit("audio", data);
            this.log(`server.audio`, `buffer (${data.byteLength})`);
          }
        });
        if (!otherParts.length) {
          return;
        }
    
        parts = otherParts;
    
        const content: ModelTurn = { modelTurn: { parts } };
        this.emit("content", content);
        this.log(`server.content`, response);
      }
    } else {
      console.log("received unmatched message", response);
    }

    }

    /**

    • send realtimeInput, this is base64 chunks of "audio/pcm" and/or "image/jpg" */ sendRealtimeInput(chunks: GenerativeContentBlob[]) { let hasAudio = false; let hasVideo = false; for (let i = 0; i < chunks.length; i++) { const ch = chunksi; if (ch.mimeType.includes("audio")) { hasAudio = true; } if (ch.mimeType.includes("image")) { hasVideo = true; } if (hasAudio && hasVideo) { break; } } const message = hasAudio && hasVideo ? "audio + video" : hasAudio ? "audio" : hasVideo ? "video" : "unknown";

      const data: RealtimeInputMessage = { realtimeInput: { mediaChunks: chunks, }, }; this._sendDirect(data); this.log(client.realtimeInput, message); }

      /**

    • send a response to a function call and provide the id of the functions you are responding to */ sendToolResponse(toolResponse: ToolResponseMessage"toolResponse") { const message: ToolResponseMessage = { toolResponse, };

      this._sendDirect(message); this.log(client.toolResponse, message); }

      /**

    • send normal content parts such as { text } */ send(parts: Part | Part[], turnComplete: boolean = true) { parts = Array.isArray(parts) ? parts : parts; const content: Content = { role: "user", parts, };

      const clientContentRequest: ClientContentMessage = { clientContent: { turns: content, turnComplete, }, };

      this._sendDirect(clientContentRequest); this.log(client.send, clientContentRequest); }

      /**

    • used internally to send all messages

    • don't use directly unless trying to send an unsupported message type */ _sendDirect(request: object) { if (!this.ws) { throw new Error("WebSocket is not connected"); } const str = JSON.stringify(request); this.ws.send(str); } }

src/lib/audio-streamer.ts /**

  • Copyright 2024 Google LLC
  • Licensed under the Apache License, Version 2.0 (the "License");
  • you may not use this file except in compliance with the License.
  • You may obtain a copy of the License at
  • http://www.apache.org/licenses/LICENSE-2.0
  • Unless required by applicable law or agreed to in writing, software
  • distributed under the License is distributed on an "AS IS" BASIS,
  • WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  • See the License for the specific language governing permissions and
  • limitations under the License. */

import { createWorketFromSrc, registeredWorklets, } from "./audioworklet-registry";

export class AudioStreamer { public audioQueue: Float32Array[] = []; private isPlaying: boolean = false; private sampleRate: number = 24000; private bufferSize: number = 7680; private processingBuffer: Float32Array = new Float32Array(0); private scheduledTime: number = 0; public gainNode: GainNode; public source: AudioBufferSourceNode; private isStreamComplete: boolean = false; private checkInterval: number | null = null; private initialBufferTime: number = 0.1; //0.1 // 100ms initial buffer private endOfQueueAudioSource: AudioBufferSourceNode | null = null;

public onComplete = () => {};

constructor(public context: AudioContext) { this.gainNode = this.context.createGain(); this.source = this.context.createBufferSource(); this.gainNode.connect(this.context.destination); this.addPCM16 = this.addPCM16.bind(this); }

async addWorklet<T extends (d: any) => void>( workletName: string, workletSrc: string, handler: T, ): Promise { let workletsRecord = registeredWorklets.get(this.context); if (workletsRecord && workletsRecordworkletName) { // the worklet already exists on this context // add the new handler to it workletsRecordworkletName.handlers.push(handler); return Promise.resolve(this); //throw new Error(Worklet ${workletName} already exists on context); }

if (!workletsRecord) {
  registeredWorklets.set(this.context, {});
  workletsRecord = registeredWorklets.get(this.context)!;
}

// create new record to fill in as becomes available
workletsRecord[workletName] = { handlers: [handler] };

const src = createWorketFromSrc(workletName, workletSrc);
await this.context.audioWorklet.addModule(src);
const worklet = new AudioWorkletNode(this.context, workletName);

//add the node into the map
workletsRecord[workletName].node = worklet;

return this;

}

addPCM16(chunk: Uint8Array) { const float32Array = new Float32Array(chunk.length / 2); const dataView = new DataView(chunk.buffer);

for (let i = 0; i < chunk.length / 2; i++) {
  try {
    const int16 = dataView.getInt16(i * 2, true);
    float32Array[i] = int16 / 32768;
  } catch (e) {
    console.error(e);
    // console.log(
    //   `dataView.length: ${dataView.byteLength},  i * 2: ${i * 2}`,
    // );
  }
}

const newBuffer = new Float32Array(
  this.processingBuffer.length + float32Array.length,
);
newBuffer.set(this.processingBuffer);
newBuffer.set(float32Array, this.processingBuffer.length);
this.processingBuffer = newBuffer;

while (this.processingBuffer.length >= this.bufferSize) {
  const buffer = this.processingBuffer.slice(0, this.bufferSize);
  this.audioQueue.push(buffer);
  this.processingBuffer = this.processingBuffer.slice(this.bufferSize);
}

if (!this.isPlaying) {
  this.isPlaying = true;
  // Initialize scheduledTime only when we start playing
  this.scheduledTime = this.context.currentTime + this.initialBufferTime;
  this.scheduleNextBuffer();
}

}

private createAudioBuffer(audioData: Float32Array): AudioBuffer { const audioBuffer = this.context.createBuffer( 1, audioData.length, this.sampleRate, ); audioBuffer.getChannelData(0).set(audioData); return audioBuffer; }

private scheduleNextBuffer() { const SCHEDULE_AHEAD_TIME = 0.2;

while (
  this.audioQueue.length > 0 &&
  this.scheduledTime < this.context.currentTime + SCHEDULE_AHEAD_TIME
) {
  const audioData = this.audioQueue.shift()!;
  const audioBuffer = this.createAudioBuffer(audioData);
  const source = this.context.createBufferSource();

  if (this.audioQueue.length === 0) {
    if (this.endOfQueueAudioSource) {
      this.endOfQueueAudioSource.onended = null;
    }
    this.endOfQueueAudioSource = source;
    source.onended = () => {
      if (
        !this.audioQueue.length &&
        this.endOfQueueAudioSource === source
      ) {
        this.endOfQueueAudioSource = null;
        this.onComplete();
      }
    };
  }

  source.buffer = audioBuffer;
  source.connect(this.gainNode);

  const worklets = registeredWorklets.get(this.context);

  if (worklets) {
    Object.entries(worklets).forEach(([workletName, graph]) => {
      const { node, handlers } = graph;
      if (node) {
        source.connect(node);
        node.port.onmessage = function (ev: MessageEvent) {
          handlers.forEach((handler) => {
            handler.call(node.port, ev);
          });
        };
        node.connect(this.context.destination);
      }
    });
  }

  // i added this trying to fix clicks
  // this.gainNode.gain.setValueAtTime(0, 0);
  // this.gainNode.gain.linearRampToValueAtTime(1, 1);

  // Ensure we never schedule in the past
  const startTime = Math.max(this.scheduledTime, this.context.currentTime);
  source.start(startTime);

  this.scheduledTime = startTime + audioBuffer.duration;
}

if (this.audioQueue.length === 0 && this.processingBuffer.length === 0) {
  if (this.isStreamComplete) {
    this.isPlaying = false;
    if (this.checkInterval) {
      clearInterval(this.checkInterval);
      this.checkInterval = null;
    }
  } else {
    if (!this.checkInterval) {
      this.checkInterval = window.setInterval(() => {
        if (
          this.audioQueue.length > 0 ||
          this.processingBuffer.length >= this.bufferSize
        ) {
          this.scheduleNextBuffer();
        }
      }, 100) as unknown as number;
    }
  }
} else {
  const nextCheckTime =
    (this.scheduledTime - this.context.currentTime) * 1000;
  setTimeout(
    () => this.scheduleNextBuffer(),
    Math.max(0, nextCheckTime - 50),
  );
}

}

stop() { this.isPlaying = false; this.isStreamComplete = true; this.audioQueue = []; this.processingBuffer = new Float32Array(0); this.scheduledTime = this.context.currentTime;

if (this.checkInterval) {
  clearInterval(this.checkInterval);
  this.checkInterval = null;
}

this.gainNode.gain.linearRampToValueAtTime(
  0,
  this.context.currentTime + 0.1,
);

setTimeout(() => {
  this.gainNode.disconnect();
  this.gainNode = this.context.createGain();
  this.gainNode.connect(this.context.destination);
}, 200);

}

async resume() { if (this.context.state === "suspended") { await this.context.resume(); } this.isStreamComplete = false; this.scheduledTime = this.context.currentTime + this.initialBufferTime; this.gainNode.gain.setValueAtTime(1, this.context.currentTime); }

complete() { this.isStreamComplete = true; if (this.processingBuffer.length > 0) { this.audioQueue.push(this.processingBuffer); this.processingBuffer = new Float32Array(0); if (this.isPlaying) { this.scheduleNextBuffer(); } } else { this.onComplete(); } } }

// // Usage example: // const audioStreamer = new AudioStreamer(); // // // In your streaming code: // function handleChunk(chunk: Uint8Array) { // audioStreamer.handleChunk(chunk); // } // // // To start playing (call this in response to a user interaction) // await audioStreamer.resume(); // // // To stop playing // // audioStreamer.stop();


src/components/logger/Logger.tsx /**

  • Copyright 2024 Google LLC
  • Licensed under the Apache License, Version 2.0 (the "License");
  • you may not use this file except in compliance with the License.
  • You may obtain a copy of the License at
  • http://www.apache.org/licenses/LICENSE-2.0
  • Unless required by applicable law or agreed to in writing, software
  • distributed under the License is distributed on an "AS IS" BASIS,
  • WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  • See the License for the specific language governing permissions and
  • limitations under the License. */

import "./logger.scss";

import { Part } from "@google/generative-ai"; import cn from "classnames"; import { ReactNode } from "react"; import { useLoggerStore } from "../../lib/store-logger"; import { ClientContentMessage, isClientContentMessage, isInterrupted, isModelTurn, isServerContenteMessage, isToolCallCancellationMessage, isToolCallMessage, isToolResponseMessage, isTurnComplete, ModelTurn, ServerContentMessage, StreamingLog, ToolCallCancellationMessage, ToolCallMessage, ToolResponseMessage, } from "../../multimodal-live-types";

const formatTime = (d: Date) => d.toLocaleTimeString().slice(0, -3);

const LogEntry = ({ log, MessageComponent, }: { log: StreamingLog; MessageComponent: ({ message, }: { message: StreamingLog"message"; }) => ReactNode; }): JSX.Element => (

const PlainTextMessage = ({ message, }: { message: StreamingLog"message"; }) => {message as string};

type Message = { message: StreamingLog"message" };

const AnyMessage = ({ message }: Message) => (

);

const RenderPart = ({ part }: { part: Part }) => part.text && part.text.length ? (

<p className="part part-text">{part.text}</p>

) : (

<div className="part part-inlinedata">
  <h5>Inline Data: {part.inlineData?.mimeType}</h5>
</div>

);

const ClientContentLog = ({ message }: Message) => { const { turns, turnComplete } = (message as ClientContentMessage) .clientContent; return (

<div className="rich-log client-content user">
  <h4 className="roler-user">User</h4>
  {turns.map((turn, i) => (
    <div key={`message-turn-${i}`}>
      {turn.parts
        .filter((part) => !(part.text && part.text === "\n"))
        .map((part, j) => (
          <RenderPart part={part} key={`message-turh-${i}-part-${j}`} />
        ))}
    </div>
  ))}
  {!turnComplete ? <span>turnComplete: false</span> : ""}
</div>

); };

const ToolCallLog = ({ message }: Message) => { const { toolCall } = message as ToolCallMessage; return (

<div className={cn("rich-log tool-call")}>
  {toolCall.functionCalls.map((fc, i) => (
    <div key={fc.id} className="part part-functioncall">
      <h5>Function call: {fc.name}</h5>
      <pre>{JSON.stringify(fc, null, "  ")}</pre>
    </div>
  ))}
</div>

); };

const ToolCallCancellationLog = ({ message }: Message): JSX.Element => (

const ToolResponseLog = ({ message }: Message): JSX.Element => (

const ModelTurnLog = ({ message }: Message): JSX.Element => { const serverContent = (message as ServerContentMessage).serverContent; const { modelTurn } = serverContent as ModelTurn; const { parts } = modelTurn;

return (

<div className="rich-log model-turn model">
  <h4 className="role-model">Model</h4>
  {parts
    .filter((part) => !(part.text && part.text === "\n"))
    .map((part, j) => (
      <RenderPart part={part} key={`model-turn-part-${j}`} />
    ))}
</div>

); };

const CustomPlainTextLog = (msg: string) => () => ( );

export type LoggerFilterType = "conversations" | "tools" | "none";

export type LoggerProps = { filter: LoggerFilterType; };

const filters: Record<LoggerFilterType, (log: StreamingLog) => boolean> = { tools: (log: StreamingLog) => isToolCallMessage(log.message) || isToolResponseMessage(log.message) || isToolCallCancellationMessage(log.message), conversations: (log: StreamingLog) => isClientContentMessage(log.message) || isServerContenteMessage(log.message), none: () => true, };

const component = (log: StreamingLog) => { if (typeof log.message === "string") { return PlainTextMessage; } if (isClientContentMessage(log.message)) { return ClientContentLog; } if (isToolCallMessage(log.message)) { return ToolCallLog; } if (isToolCallCancellationMessage(log.message)) { return ToolCallCancellationLog; } if (isToolResponseMessage(log.message)) { return ToolResponseLog; } if (isServerContenteMessage(log.message)) { const { serverContent } = log.message; if (isInterrupted(serverContent)) { return CustomPlainTextLog("interrupted"); } if (isTurnComplete(serverContent)) { return CustomPlainTextLog("turnComplete"); } if (isModelTurn(serverContent)) { return ModelTurnLog; } } return AnyMessage; };

export default function Logger({ filter = "none" }: LoggerProps) { const { logs } = useLoggerStore();

const filterFn = filtersfilter;

return (

<div className="logger">
  <ul className="logger-list">
    {logs.filter(filterFn).map((log, key) => {
      return (
        <LogEntry MessageComponent={component(log)} log={log} key={key} />
      );
    })}
  </ul>
</div>

); }


src/components/side-panel/side-panel.scss .side-panel { .react-select { background: var(--Neutral-20); color: var(--Neutral-90); width: 193px; height: 30px;

.react-select__single-value {
  color: var(--Neutral-90);
}

.react-select__menu {
  background: var(--Neutral-20);
  color: var(--Neutral-90);
}

.react-select__option {
}
.react-select__value-container {
}
.react-select__indicators {
}
.react-select__option:hover,
.react-select__option:focus,
.react-select_option:focus-within {
  background: var(--Neutral-30);
}
.react-select__option--is-focused: {
  background: var(--Neutral-30);
}

} background: var(--Neutral-00); width: 40px; / when closed / display: flex; flex-direction: column; height: 100vh; transition: all 0.2s ease-in; font-family: Arial, sans-serif; border-right: 1px solid var(--gray-600); color: var(--Neutral-90, #e1e2e3); font-family: var(--font-family); font-size: 13px; font-style: normal; font-weight: 400; line-height: 160%; / 20.8px /

.hidden { display: none !important; }

&.open { .top { h2 { left: 0%; display: block; opacity: 1; } } }

.top { display: flex; width: calc(100% - 45px); justify-content: space-between; align-items: center; padding: 12px 20px 12px 25px; border-bottom: 1px solid var(--Neutral-20);

h2 {
  position: relative;
  color: var(--Neutral-90, #e1e2e3);
  font-family: "Google Sans";
  font-size: 21px;
  font-style: normal;
  font-weight: 500;
  line-height: 16px; /* 100% */

  opacity: 0;
  display: none;
  left: -100%;
  transition:
    opacity 0.2s ease-in,
    left 0.2s ease-in,
    display 0.2s ease-in;
  transition-behavior: allow-discrete;

  @starting-style {
    left: 0%;
    opacity: 1;
  }
}

}

.opener { height: 30px; transition: transform 0.2s ease-in; }

&:not(.open) { .side-panel-container { opacity: 0; display: none; transition: all 0.2s ease-in allow-discrete; transition-delay: 0.1s; }

.indicators .streaming-indicator {
  width: 30px;
  opacity: 0;
}

.opener {
  transform: translate(-50%, 0);
}

.input-container {
  opacity: 0;
  display: none;
  transition: all 0.2s ease-in allow-discrete;
}

}

.indicators { display: flex; padding: 24px 25px; justify-content: flex-end; gap: 21px; .streaming-indicator { user-select: none; border-radius: 4px; border: 1px solid var(--Neutral-20, #2a2f31); background: var(--Neutral-10, #1c1f21); display: flex; width: 136px; height: 30px; padding-left: 4px; justify-content: center; align-items: center; gap: 6px; flex-shrink: 0; text-align: center; font-family: "Space Mono"; font-size: 14px; font-style: normal; font-weight: 400; line-height: normal; transition: width 0.2s ease-in;

  &.connected {
    color: var(--Blue-500, #0d9c53);
  }
}

}

.side-panel-container { align-self: flex-end; width: 400px; flex-grow: 1; overflow-x: hidden; overflow-y: auto; /scrollbar-gutter: stable both-edges;/ }

.input-container { height: 50px; flex-grow: 0; flex-shrink: 0; border-top: 1px solid var(--Neutral-20); padding: 14px 25px; overflow: hidden;

.input-content {
  position: relative;
  background: var(--Neutral-10);
  border: 1px solid var(--Neutral-15);
  height: 22px;
  border-radius: 10px;
  padding: 11px 18px;

  .send-button {
    position: absolute;
    top: 50%;
    right: 0;
    transform: translate(0, -50%);
    background: none;
    border: 0;
    color: var(--Neutral-20);
    cursor: pointer;
    transition: color 0.1s ease-in;
    z-index: 2;

    &:hover {
      color: var(--Neutral-60);
    }
  }

  .input-area {
    background: none;
    color: var(--Neutral-90);
    field-sizing: content;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    display: inline-block;
    width: calc(100% - 72px);
    max-height: 20px;
    outline: none;
    --webkit-box-flex: 1;
    flex: 1;
    word-break: break-word;
    overflow: auto;
    padding: 14px 18px;
    border: 0;
    resize: none;
  }

  .input-content-placeholder {
    position: absolute;
    left: 0;
    top: 0;
    display: flex;
    align-items: center;
    z-index: 1;
    height: 100%;
    width: 100%;
    pointer-events: none;
    user-select: none;
    padding: 0px 18px;
    white-space: pre-wrap;
  }
}

} } .side-panel.open { width: 400px; height: 100vh; }

.side-panel-responses, .side-panel-requests { flex-grow: 1; flex-shrink: 1; overflow-x: hidden; overflow-y: auto; width: 100%; display: block; margin-left: 8px; }

.top { width: 100%; flex-grow: 0; flex-shrink: 0; height: 30px; display: flex; align-self: flex-end; align-items: center; transition: all 0.2s ease-in; } .top button { background: transparent; border: 0; cursor: pointer; font-size: 1.25rem; line-height: 1.75rem; padding: 4px; }


src/components/control-tray/ControlTray.tsx /**

  • Copyright 2024 Google LLC
  • Licensed under the Apache License, Version 2.0 (the "License");
  • you may not use this file except in compliance with the License.
  • You may obtain a copy of the License at
  • http://www.apache.org/licenses/LICENSE-2.0
  • Unless required by applicable law or agreed to in writing, software
  • distributed under the License is distributed on an "AS IS" BASIS,
  • WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  • See the License for the specific language governing permissions and
  • limitations under the License. */

import cn from "classnames";

import { memo, ReactNode, RefObject, useEffect, useRef, useState } from "react"; import { useLiveAPIContext } from "../../contexts/LiveAPIContext"; import { UseMediaStreamResult } from "../../hooks/use-media-stream-mux"; import { useScreenCapture } from "../../hooks/use-screen-capture"; import { useWebcam } from "../../hooks/use-webcam"; import { AudioRecorder } from "../../lib/audio-recorder"; import AudioPulse from "../audio-pulse/AudioPulse"; import "./control-tray.scss";

export type ControlTrayProps = { videoRef: RefObject; children?: ReactNode; supportsVideo: boolean; onVideoStreamChange?: (stream: MediaStream | null) => void; };

type MediaStreamButtonProps = { isStreaming: boolean; onIcon: string; offIcon: string; start: () => Promise; stop: () => any; };

/**

  • button used for triggering webcam or screen-capture */ const MediaStreamButton = memo( ({ isStreaming, onIcon, offIcon, start, stop }: MediaStreamButtonProps) => isStreaming ? ( {onIcon} ) : ( {offIcon} ), );

function ControlTray({ videoRef, children, onVideoStreamChange = () => {}, supportsVideo, }: ControlTrayProps) { const videoStreams = useWebcam(), useScreenCapture(); const activeVideoStream, setActiveVideoStream = useState<MediaStream | null>(null); const webcam, screenCapture = videoStreams; const inVolume, setInVolume = useState(0); const audioRecorder = useState(() => new AudioRecorder()); const muted, setMuted = useState(false); const renderCanvasRef = useRef(null); const connectButtonRef = useRef(null);

const { client, connected, connect, disconnect, volume } = useLiveAPIContext();

useEffect(() => { if (!connected && connectButtonRef.current) { connectButtonRef.current.focus(); } }, connected); useEffect(() => { document.documentElement.style.setProperty( "--volume", ${Math.max(5, Math.min(inVolume * 200, 8))}px, ); }, inVolume);

useEffect(() => { const onData = (base64: string) => { client.sendRealtimeInput( { mimeType: "audio/pcm;rate=16000", data: base64, }, ); }; if (connected && !muted && audioRecorder) { audioRecorder.on("data", onData).on("volume", setInVolume).start(); } else { audioRecorder.stop(); } return () => { audioRecorder.off("data", onData).off("volume", setInVolume); }; }, connected, client, muted, audioRecorder);

useEffect(() => { if (videoRef.current) { videoRef.current.srcObject = activeVideoStream; }

let timeoutId = -1;

function sendVideoFrame() {
  const video = videoRef.current;
  const canvas = renderCanvasRef.current;

  if (!video || !canvas) {
    return;
  }

  const ctx = canvas.getContext("2d")!;
  canvas.width = video.videoWidth * 0.25;
  canvas.height = video.videoHeight * 0.25;
  if (canvas.width + canvas.height > 0) {
    ctx.drawImage(videoRef.current, 0, 0, canvas.width, canvas.height);
    const base64 = canvas.toDataURL("image/jpeg", 1.0);
    const data = base64.slice(base64.indexOf(",") + 1, Infinity);
    client.sendRealtimeInput([{ mimeType: "image/jpeg", data }]);
  }
  if (connected) {
    timeoutId = window.setTimeout(sendVideoFrame, 1000 / 0.5);
  }
}
if (connected && activeVideoStream !== null) {
  requestAnimationFrame(sendVideoFrame);
}
return () => {
  clearTimeout(timeoutId);
};

}, connected, activeVideoStream, client, videoRef);

//handler for swapping from one video-stream to the next const changeStreams = (next?: UseMediaStreamResult) => async () => { if (next) { const mediaStream = await next.start(); setActiveVideoStream(mediaStream); onVideoStreamChange(mediaStream); } else { setActiveVideoStream(null); onVideoStreamChange(null); }

videoStreams.filter((msr) => msr !== next).forEach((msr) => msr.stop());

};

return (

<section className="control-tray">
  <canvas style={{ display: "none" }} ref={renderCanvasRef} />
  <nav className={cn("actions-nav", { disabled: !connected })}>
    <button
      className={cn("action-button mic-button")}
      onClick={() => setMuted(!muted)}
    >
      {!muted ? (
        <span className="material-symbols-outlined filled">mic</span>
      ) : (
        <span className="material-symbols-outlined filled">mic_off</span>
      )}
    </button>

    <div className="action-button no-action outlined">
      <AudioPulse volume={volume} active={connected} hover={false} />
    </div>

    {supportsVideo && (
      <>
        <MediaStreamButton
          isStreaming={screenCapture.isStreaming}
          start={changeStreams(screenCapture)}
          stop={changeStreams()}
          onIcon="cancel_presentation"
          offIcon="present_to_all"
        />
        <MediaStreamButton
          isStreaming={webcam.isStreaming}
          start={changeStreams(webcam)}
          stop={changeStreams()}
          onIcon="videocam_off"
          offIcon="videocam"
        />
      </>
    )}
    {children}
  </nav>

  <div className={cn("connection-container", { connected })}>
    <div className="connection-button-container">
      <button
        ref={connectButtonRef}
        className={cn("action-button connect-toggle", { connected })}
        onClick={connected ? disconnect : connect}
      >
        <span className="material-symbols-outlined filled">
          {connected ? "pause" : "play_arrow"}
        </span>
      </button>
    </div>
    <span className="text-indicator">Streaming</span>
  </div>
</section>

); }

export default memo(ControlTray);


src/multimodal-live-types.ts /**

  • Copyright 2024 Google LLC
  • Licensed under the Apache License, Version 2.0 (the "License");
  • you may not use this file except in compliance with the License.
  • You may obtain a copy of the License at
  • http://www.apache.org/licenses/LICENSE-2.0
  • Unless required by applicable law or agreed to in writing, software
  • distributed under the License is distributed on an "AS IS" BASIS,
  • WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  • See the License for the specific language governing permissions and
  • limitations under the License. */

import type { Content, FunctionCall, GenerationConfig, GenerativeContentBlob, Part, Tool, } from "@google/generative-ai";

/**

  • this module contains type-definitions and Type-Guards */

// Type-definitions

/ outgoing types /

/**

  • the config to initiate the session */ export type LiveConfig = { model: string; systemInstruction?: { parts: Part[] }; generationConfig?: Partial; tools?: Array<Tool | { googleSearch: {} } | { codeExecution: {} }>; };

export type LiveGenerationConfig = GenerationConfig & { responseModalities: "text" | "audio" | "image"; speechConfig?: { voiceConfig?: { prebuiltVoiceConfig?: { voiceName: "Puck" | "Charon" | "Kore" | "Fenrir" | "Aoede" | string; }; }; }; };

export type LiveOutgoingMessage = | SetupMessage | ClientContentMessage | RealtimeInputMessage | ToolResponseMessage;

export type SetupMessage = { setup: LiveConfig; };

export type ClientContentMessage = { clientContent: { turns: Content[]; turnComplete: boolean; }; };

export type RealtimeInputMessage = { realtimeInput: { mediaChunks: GenerativeContentBlob[]; }; };

export type ToolResponseMessage = { toolResponse: { functionResponses: LiveFunctionResponse[]; }; };

export type ToolResponse = ToolResponseMessage"toolResponse";

export type LiveFunctionResponse = { response: object; id: string; };

/* Incoming types /

export type LiveIncomingMessage = | ToolCallCancellationMessage | ToolCallMessage | ServerContentMessage | SetupCompleteMessage;

export type SetupCompleteMessage = { setupComplete: {} };

export type ServerContentMessage = { serverContent: ServerContent; };

export type ServerContent = ModelTurn | TurnComplete | Interrupted;

export type ModelTurn = { modelTurn: { parts: Part[]; }; };

export type TurnComplete = { turnComplete: boolean };

export type Interrupted = { interrupted: true };

export type ToolCallCancellationMessage = { toolCallCancellation: { ids: string[]; }; };

export type ToolCallCancellation = ToolCallCancellationMessage"toolCallCancellation";

export type ToolCallMessage = { toolCall: ToolCall; };

export type LiveFunctionCall = FunctionCall & { id: string; };

/**

  • A toolCall message */ export type ToolCall = { functionCalls: LiveFunctionCall[]; };

/* log types / export type StreamingLog = { date: Date; type: string; count?: number; message: string | LiveOutgoingMessage | LiveIncomingMessage; };

// Type-Guards

const prop = (a: any, prop: string, kind: string = "object") => typeof a === "object" && typeof aprop === "object";

// outgoing messages export const isSetupMessage = (a: unknown): a is SetupMessage => prop(a, "setup");

export const isClientContentMessage = (a: unknown): a is ClientContentMessage => prop(a, "clientContent");

export const isRealtimeInputMessage = (a: unknown): a is RealtimeInputMessage => prop(a, "realtimeInput");

export const isToolResponseMessage = (a: unknown): a is ToolResponseMessage => prop(a, "toolResponse");

// incoming messages export const isSetupCompleteMessage = (a: unknown): a is SetupCompleteMessage => prop(a, "setupComplete");

export const isServerContenteMessage = (a: any): a is ServerContentMessage => prop(a, "serverContent");

export const isToolCallMessage = (a: any): a is ToolCallMessage => prop(a, "toolCall");

export const isToolCallCancellationMessage = ( a: unknown, ): a is ToolCallCancellationMessage => prop(a, "toolCallCancellation") && isToolCallCancellation((a as any).toolCallCancellation);

export const isModelTurn = (a: any): a is ModelTurn => typeof (a as ModelTurn).modelTurn === "object";

export const isTurnComplete = (a: any): a is TurnComplete => typeof (a as TurnComplete).turnComplete === "boolean";

export const isInterrupted = (a: any): a is Interrupted => (a as Interrupted).interrupted;

export function isToolCall(value: unknown): value is ToolCall { if (!value || typeof value !== "object") return false;

const candidate = value as Record<string, unknown>;

return ( Array.isArray(candidate.functionCalls) && candidate.functionCalls.every((call) => isLiveFunctionCall(call)) ); }

export function isToolResponse(value: unknown): value is ToolResponse { if (!value || typeof value !== "object") return false;

const candidate = value as Record<string, unknown>;

return ( Array.isArray(candidate.functionResponses) && candidate.functionResponses.every((resp) => isLiveFunctionResponse(resp)) ); }

export function isLiveFunctionCall(value: unknown): value is LiveFunctionCall { if (!value || typeof value !== "object") return false;

const candidate = value as Record<string, unknown>;

return ( typeof candidate.name === "string" && typeof candidate.id === "string" && typeof candidate.args === "object" && candidate.args !== null ); }

export function isLiveFunctionResponse( value: unknown, ): value is LiveFunctionResponse { if (!value || typeof value !== "object") return false;

const candidate = value as Record<string, unknown>;

return ( typeof candidate.response === "object" && typeof candidate.id === "string" ); }

export const isToolCallCancellation = ( a: unknown, ): a is ToolCallCancellationMessage"toolCallCancellation" => typeof a === "object" && Array.isArray((a as any).ids);


src/components/side-panel/SidePanel.tsx /**

  • Copyright 2024 Google LLC
  • Licensed under the Apache License, Version 2.0 (the "License");
  • you may not use this file except in compliance with the License.
  • You may obtain a copy of the License at
  • http://www.apache.org/licenses/LICENSE-2.0
  • Unless required by applicable law or agreed to in writing, software
  • distributed under the License is distributed on an "AS IS" BASIS,
  • WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  • See the License for the specific language governing permissions and
  • limitations under the License. */

import cn from "classnames"; import { useEffect, useRef, useState } from "react"; import { RiSidebarFoldLine, RiSidebarUnfoldLine } from "react-icons/ri"; import Select from "react-select"; import { useLiveAPIContext } from "../../contexts/LiveAPIContext"; import { useLoggerStore } from "../../lib/store-logger"; import Logger, { LoggerFilterType } from "../logger/Logger"; import "./side-panel.scss";

const filterOptions = { value: "conversations", label: "Conversations" }, { value: "tools", label: "Tool Use" }, { value: "none", label: "All" }, ;

export default function SidePanel() { const { connected, client } = useLiveAPIContext(); const open, setOpen = useState(true); const loggerRef = useRef(null); const loggerLastHeightRef = useRef(-1); const { log, logs } = useLoggerStore();

const textInput, setTextInput = useState(""); const selectedOption, setSelectedOption = useState<{ value: string; label: string; } | null>(null); const inputRef = useRef(null);

//scroll the log to the bottom when new logs come in useEffect(() => { if (loggerRef.current) { const el = loggerRef.current; const scrollHeight = el.scrollHeight; if (scrollHeight !== loggerLastHeightRef.current) { el.scrollTop = scrollHeight; loggerLastHeightRef.current = scrollHeight; } } }, logs);

// listen for log events and store them useEffect(() => { client.on("log", log); return () => { client.off("log", log); }; }, client, log);

const handleSubmit = () => { client.send({ text: textInput });

setTextInput("");
if (inputRef.current) {
  inputRef.current.innerText = "";
}

};

return (

<div className={`side-panel ${open ? "open" : ""}`}>
  <header className="top">
    <h2>Console</h2>
    {open ? (
      <button className="opener" onClick={() => setOpen(false)}>
        <RiSidebarFoldLine color="#b4b8bb" />
      </button>
    ) : (
      <button className="opener" onClick={() => setOpen(true)}>
        <RiSidebarUnfoldLine color="#b4b8bb" />
      </button>
    )}
  </header>
  <section className="indicators">
    <Select
      className="react-select"
      classNamePrefix="react-select"
      styles={{
        control: (baseStyles) => ({
          ...baseStyles,
          background: "var(--Neutral-15)",
          color: "var(--Neutral-90)",
          minHeight: "33px",
          maxHeight: "33px",
          border: 0,
        }),
        option: (styles, { isFocused, isSelected }) => ({
          ...styles,
          backgroundColor: isFocused
            ? "var(--Neutral-30)"
            : isSelected
              ? "var(--Neutral-20)"
              : undefined,
        }),
      }}
      defaultValue={selectedOption}
      options={filterOptions}
      onChange={(e) => {
        setSelectedOption(e);
      }}
    />
    <div className={cn("streaming-indicator", { connected })}>
      {connected
        ? `🔵${open ? " Streaming" : ""}`
        : `⏸️${open ? " Paused" : ""}`}
    </div>
  </section>
  <div className="side-panel-container" ref={loggerRef}>
    <Logger
      filter={(selectedOption?.value as LoggerFilterType) || "none"}
    />
  </div>
  <div className={cn("input-container", { disabled: !connected })}>
    <div className="input-content">
      <textarea
        className="input-area"
        ref={inputRef}
        onKeyDown={(e) => {
          if (e.key === "Enter" && !e.shiftKey) {
            e.preventDefault();
            e.stopPropagation();
            handleSubmit();
          }
        }}
        onChange={(e) => setTextInput(e.target.value)}
        value={textInput}
      ></textarea>
      <span
        className={cn("input-content-placeholder", {
          hidden: textInput.length,
        })}
      >
        Type&nbsp;something...
      </span>

      <button
        className="send-button material-symbols-outlined filled"
        onClick={handleSubmit}
      >
        send
      </button>
    </div>
  </div>
</div>

); }


src/components/control-tray/control-tray.scss .action-button { display: flex; align-items: center; justify-content: center; background: var(--Neutral-20); color: var(--Neutral-60); font-size: 1.25rem; line-height: 1.75rem; text-transform: lowercase; cursor: pointer; animation: opacity-pulse 3s ease-in infinite; transition: all 0.2s ease-in-out; width: 48px; height: 48px; border-radius: 18px; border: 1px solid rgba(0, 0, 0, 0); user-select: none; cursor: pointer;

&:focus { border: 2px solid var(--Neutral-20); outline: 2px solid var(--Neutral-80); }

&.outlined { background: var(--Neutral-2); border: 1px solid var(--Neutral-20); }

.no-action { pointer-events: none; }

&:hover { background: rgba(0, 0, 0, 0); border: 1px solid var(--Neutral-20); }

&.connected { background: var(--Blue-800); color: var(--Blue-500);

&:hover {
  border: 1px solid var(--Blue-500);
}

} }

@property --volume { syntax: "length"; inherit: false; initial-value: 0px; }

.disabled .mic-button, .mic-button.disabled { &:before { background: rgba(0, 0, 0, 0); } }

.mic-button { position: relative; background-color: var(--accent-red); z-index: 1; color: black; transition: all 0.2s ease-in;

&:focus { border: 2px solid var(--Neutral-20); outline: 2px solid var(--Red-500); }

&:hover { background-color: var(--Red-400); }

&:before { position: absolute; z-index: -1; top: calc(var(--volume) -1); left: calc(var(--volume) -1); display: block; content: ""; opacity: 0.35; background-color: var(--Red-500); width: calc(100% + var(--volume) 2); height: calc(100% + var(--volume) 2); border-radius: 24px; transition: all 0.02s ease-in-out; } }

.connect-toggle { &:focus { border: 2px solid var(--Neutral-20); outline: 2px solid var(--Neutral-80); }

&:not(.connected) { background-color: var(--Blue-500); color: var(--Neutral-5); } }

.control-tray { position: absolute; bottom: 0; left: 50%; transform: translate(-50%, 0); display: inline-flex; justify-content: center; align-items: flex-start; gap: 8px; padding-bottom: 18px;

.disabled .action-button, .action-button.disabled { background: rgba(0, 0, 0, 0); border: 1px solid var(--Neutral-30, #404547); color: var(--Neutral-30); }

.connection-container { display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 4px;

.connection-button-container {
  border-radius: 27px;
  border: 1px solid var(--Neutral-30);
  background: var(--Neutral-5);
  padding: 10px;
}

.text-indicator {
  font-size: 11px;
  color: var(--Blue-500);
  user-select: none;
}

&:not(.connected) {
  .text-indicator {
    opacity: 0;
  }
}

} }

.actions-nav { background: var(--Neutral-5); border: 1px solid var(--Neutral-30); border-radius: 27px; display: inline-flex; gap: 12px; align-items: center; overflow: clip; padding: 10px;

transition: all 0.6s ease-in;

&>* { display: flex; align-items: center; flex-direction: column; gap: 1rem; } }

@keyframes opacity-pulse { 0% { opacity: 0.9; }

50% { opacity: 1; }

100% { opacity: 0.9; } }


src/App.scss :root { --text: white; --gray-200: #b4b8bb; --gray-300: #80868b; --gray-500: #5f6368; --gray-600: #444444; --gray-700: #202020; --gray-800: #171717; --gray-900: #111111; --gray-1000: #0a0a0a; --border-stroke: #444444; --accent-blue: rgb(161, 228, 242); --accent-blue-active-bg: #001233; --accent-blue-active: #98beff; --accent-blue-headers: #448dff; --accent-green: rgb(168, 218, 181);

--midnight-blue: rgb(0, 18, 51); --blue-30: #99beff;

--accent-red: #ff4600;

--background: var(--gray-900); --color: var(--text);

scrollbar-color: var(--gray-600) var(--gray-900); scrollbar-width: thin;

--font-family: "Space Mono", monospace;

/* */ --Neutral-00: #000; --Neutral-5: #181a1b; --Neutral-10: #1c1f21; --Neutral-15: #232729; --Neutral-20: #2a2f31; --Neutral-30: #404547; --Neutral-50: #707577; --Neutral-60: #888d8f; --Neutral-80: #c3c6c7; --Neutral-90: #e1e2e3;

--Green-500: #0d9c53; --Green-700: #025022;

--Blue-500: #1f94ff; --Blue-800: #0f3557;

--Red-400: #ff9c7a; --Red-500: #ff4600; --Red-600: #e03c00; --Red-700: #bd3000; }

body { font-family: "Space Mono", monospace; background: var(--Neutral-30); }

.material-symbols-outlined { &.filled { font-variation-settings: "FILL" 1, "wght" 400, "GRAD" 0, "opsz" 24; } }

.space-mono-regular { font-family: "Space Mono", monospace; font-weight: 400; font-style: normal; }

.space-mono-bold { font-family: "Space Mono", monospace; font-weight: 700; font-style: normal; }

.space-mono-regular-italic { font-family: "Space Mono", monospace; font-weight: 400; font-style: italic; }

.space-mono-bold-italic { font-family: "Space Mono", monospace; font-weight: 700; font-style: italic; }

.hidden { display: none; }

.flex { display: flex; }

.h-screen-full { height: 100vh; }

.w-screen-full { width: 100vw; }

.flex-col { flex-direction: column; }

@media (prefers-reduced-motion: no-preference) {}

.streaming-console { background: var(--Neutral-5); color: var(--gray-300); display: flex; height: 100vh; width: 100vw;

a, a:visited, a:active { color: var(--gray-300); }

.disabled { pointer-events: none;

>* {
  pointer-events: none;
}

}

main { position: relative; display: flex;