Truyền trực tuyến hai chiều bằng Gemini Live API

Sử dụng bộ sưu tập để sắp xếp ngăn nắp các trang Lưu và phân loại nội dung dựa trên lựa chọn ưu tiên của bạn.

// Initialize the Vertex AI Gemini API backend service
// Create a `LiveModel` instance with the model that supports the Live API
val model = Firebase.vertexAI.liveModel(
    modelName = "gemini-2.0-flash-live-preview-04-09",
    // Configure the model to respond with text
    generationConfig = liveGenerationConfig {
        responseModality = ResponseModality.TEXT 
   }
)

val session = model.connect()

// Provide a text prompt
val audioContent = content("user") { audioData }

session.send(audioContent)

var outputText = ""
session.receive().collect {
    if(it.status == Status.TURN_COMPLETE) {
        // Optional: if you don't require to send more requests.
        session.stopReceiving();
    }
    outputText = outputText + it.text
}

// Output received from the server.
println(outputText)

ExecutorService executor = Executors.newFixedThreadPool(1);
// Initialize the Vertex AI Gemini API backend service
// Create a `LiveModel` instance with the model that supports the Live API
LiveGenerativeModel lm = FirebaseAI.getInstance(GenerativeBackend.vertexAI()).liveModel(
        "gemini-2.0-flash-live-preview-04-09",
        // Configure the model to respond with text
        new LiveGenerationConfig.Builder()
                .setResponseModalities(ResponseModality.TEXT)
                .build()
);
LiveModelFutures model = LiveModelFutures.from(lm);
ListenableFuture<LiveSession> sessionFuture =  model.connect();
class LiveContentResponseSubscriber implements Subscriber<LiveContentResponse> {
    @Override
    public void onSubscribe(Subscription s) {
        s.request(Long.MAX_VALUE); // Request an unlimited number of items
    }
    @Override
    public void onNext(LiveContentResponse liveContentResponse) {
        // Handle the response from the server.
	System.out.println(liveContentResponse.getText());
    }
    @Override
    public void onError(Throwable t) {
        System.err.println("Error: " + t.getMessage());
    }
    @Override
    public void onComplete() {
        System.out.println("Done receiving messages!");
    }
}
Futures.addCallback(sessionFuture, new FutureCallback<LiveSession>() {
    @Override
    public void onSuccess(LiveSession ses) {
	 LiveSessionFutures session = LiveSessionFutures.from(ses);
        // Send Audio data
	 session.send(new Content.Builder().addInlineData(audioData, "audio/pcm").build());

        session.send(text);
        Publisher<LiveContentResponse> publisher = session.receive();
        publisher.subscribe(new LiveContentResponseSubscriber());
    }
    @Override
    public void onFailure(Throwable t) {
        // Handle exceptions
    }
}, executor);

import 'package:firebase_ai/firebase_ai.dart';
import 'package:firebase_core/firebase_core.dart';
import 'firebase_options.dart';
import 'package:your_audio_recorder_package/your_audio_recorder_package.dart';
import 'dart:async';

late LiveModelSession _session;
final _audioRecorder = YourAudioRecorder();

await Firebase.initializeApp(
  options: DefaultFirebaseOptions.currentPlatform,
);

// Initialize the Vertex AI Gemini API backend service
// Create a `LiveModel` instance with the model that supports the Live API
final model = FirebaseAI.vertexAI().liveModel(
  model: 'gemini-2.0-flash-live-preview-04-09',
  // Configure the model to respond with text
  config: LiveGenerationConfig(responseModality: ResponseModality.text),
);

_session = await model.connect();

final audioRecordStream = _audioRecorder.startRecordingStream();
final mediaChunkStream = audioRecordStream.map((data) {
  return InlineDataPart('audio/pcm', data);
});

await _session.startMediaStream(mediaChunkStream);

final responseStream = _session.receive();

return responseStream.asyncMap((response) async {
  if (response.parts.isNotEmpty && response.parts.first.text != null) {
    return response.parts.first.text!;
  } else {
    throw Exception('Text response not found.');
  }
});

Future main() async {
  try {
    final textStream = await audioToText();

    await for (final text in textStream) {
      print('Received text: $text');
      // Handle the text response
    }
  } catch (e) {
    print('Error: $e');
  }
}

using Firebase;
using Firebase.AI;

async Task SendAudioReceiveText() {
  // Initialize the Vertex AI Gemini API backend service
  // Create a `LiveModel` instance with the model that supports the Live API
  var model = FirebaseAI.GetInstance(FirebaseAI.Backend.VertexAI()).GetLiveModel(
    modelName: "gemini-2.0-flash-live-preview-04-09",
    // Configure the model to respond with text
    liveGenerationConfig: new LiveGenerationConfig(
        responseModalities: new[] { ResponseModality.Text })
  );

  LiveSession session = await model.ConnectAsync();

  // Start a coroutine to send audio from the Microphone
  var recordingCoroutine = StartCoroutine(SendAudio(session));

  // Receive the response
  await foreach (var message in session.ReceiveAsync()) {
    // Process the received message
    if (!string.IsNullOrEmpty(message.Text)) {
      UnityEngine.Debug.Log("Received message: " + message.Text);
    }
  }

  StopCoroutine(recordingCoroutine);
}

IEnumerator SendAudio(LiveSession liveSession) {
  string microphoneDeviceName = null;
  int recordingFrequency = 16000;
  int recordingBufferSeconds = 2;

  var recordingClip = Microphone.Start(microphoneDeviceName, true,
                                       recordingBufferSeconds, recordingFrequency);

  int lastSamplePosition = 0;
  while (true) {
    if (!Microphone.IsRecording(microphoneDeviceName)) {
      yield break;
    }

    int currentSamplePosition = Microphone.GetPosition(microphoneDeviceName);

    if (currentSamplePosition != lastSamplePosition) {
      // The Microphone uses a circular buffer, so we need to check if the
      // current position wrapped around to the beginning, and handle it
      // accordingly.
      int sampleCount;
      if (currentSamplePosition > lastSamplePosition) {
        sampleCount = currentSamplePosition - lastSamplePosition;
      } else {
        sampleCount = recordingClip.samples - lastSamplePosition + currentSamplePosition;
      }

      if (sampleCount > 0) {
        // Get the audio chunk
        float[] samples = new float[sampleCount];
        recordingClip.GetData(samples, lastSamplePosition);

        // Send the data, discarding the resulting Task to avoid the warning
        _ = liveSession.SendAudioAsync(samples);

        lastSamplePosition = currentSamplePosition;
      }
    }

    // Wait for a short delay before reading the next sample from the Microphone
    const float MicrophoneReadDelay = 0.5f;
    yield return new WaitForSeconds(MicrophoneReadDelay);
  }
}

// Initialize the Vertex AI Gemini API backend service
// Create a `LiveModel` instance with the model that supports the Live API
val model = Firebase.vertexAI.liveModel(
    modelName = "gemini-2.0-flash-live-preview-04-09",
    // Configure the model to respond with text
    generationConfig = liveGenerationConfig {
        responseModality = ResponseModality.AUDIO
   }
)

val session = model.connect()

// Provide a text prompt
val text = "tell a short story"

session.send(text)

session.receive().collect {
    if(it.status == Status.TURN_COMPLETE) {
        // Optional: if you don't require to send more requests.
        session.stopReceiving();
    }
    // Handle 16bit pcm audio data at 24khz
    playAudio(it.data)
}

ExecutorService executor = Executors.newFixedThreadPool(1);
// Initialize the Vertex AI Gemini API backend service
// Create a `LiveModel` instance with the model that supports the Live API
LiveGenerativeModel lm = FirebaseAI.getInstance(GenerativeBackend.vertexAI()).liveModel(
        "gemini-2.0-flash-live-preview-04-09",
        // Configure the model to respond with text
        new LiveGenerationConfig.Builder()
                .setResponseModalities(ResponseModality.AUDIO)
                .build()
);
LiveModelFutures model = LiveModelFutures.from(lm);
ListenableFuture<LiveSession> sessionFuture =  model.connect();
class LiveContentResponseSubscriber implements Subscriber<LiveContentResponse> {
    @Override
    public void onSubscribe(Subscription s) {
        s.request(Long.MAX_VALUE); // Request an unlimited number of items
    }
    @Override
    public void onNext(LiveContentResponse liveContentResponse) {
        // Handle 16bit pcm audio data at 24khz
	liveContentResponse.getData();
    }
    @Override
    public void onError(Throwable t) {
        System.err.println("Error: " + t.getMessage());
    }
    @Override
    public void onComplete() {
        System.out.println("Done receiving messages!");
    }
}
Futures.addCallback(sessionFuture, new FutureCallback<LiveSession>() {
    @Override
    public void onSuccess(LiveSession ses) {
	 LiveSessionFutures session = LiveSessionFutures.from(ses);
        // Provide a text prompt
        String text = "tell me a short story?";
        session.send(text);
        Publisher<LiveContentResponse> publisher = session.receive();
        publisher.subscribe(new LiveContentResponseSubscriber());
    }
    @Override
    public void onFailure(Throwable t) {
        // Handle exceptions
    }
}, executor);

import 'package:firebase_ai/firebase_ai.dart';
import 'package:firebase_core/firebase_core.dart';
import 'firebase_options.dart';
import 'dart:async';
import 'dart:typed_data';

late LiveModelSession _session;

Future<Stream<Uint8List>> textToAudio(String textPrompt) async {
  WidgetsFlutterBinding.ensureInitialized();

  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );

  // Initialize the Vertex AI Gemini API backend service
  // Create a `LiveModel` instance with the model that supports the Live API
  final model = FirebaseAI.vertexAI().liveModel(
    model: 'gemini-2.0-flash-live-preview-04-09',
    // Configure the model to respond with audio
    config: LiveGenerationConfig(responseModality: ResponseModality.audio),
  );

  _session = await model.connect();

  final prompt = Content.text(textPrompt);

  await _session.send(input: prompt);

  return _session.receive().asyncMap((response) async {
    if (response is LiveServerContent && response.modelTurn?.parts != null) {
       for (final part in response.modelTurn!.parts) {
         if (part is InlineDataPart) {
           return part.bytes;
         }
       }
    }
    throw Exception('Audio data not found');
  });
}

Future<void> main() async {
  try {
    final audioStream = await textToAudio('Convert this text to audio.');

    await for (final audioData in audioStream) {
      // Process the audio data (e.g., play it using an audio player package)
      print('Received audio data: ${audioData.length} bytes');
      // Example using flutter_sound (replace with your chosen package):
      // await _flutterSoundPlayer.startPlayer(fromDataBuffer: audioData);
    }
  } catch (e) {
    print('Error: $e');
  }
}

using Firebase;
using Firebase.AI;

async Task SendTextReceiveAudio() {
  // Initialize the Vertex AI Gemini API backend service
  // Create a `LiveModel` instance with the model that supports the Live API
  var model = FirebaseAI.GetInstance(FirebaseAI.Backend.VertexAI()).GetLiveModel(
    modelName: "gemini-2.0-flash-live-preview-04-09",
    // Configure the model to respond with audio
    liveGenerationConfig: new LiveGenerationConfig(
        responseModalities: new[] { ResponseModality.Audio })
  );

  LiveSession session = await model.ConnectAsync();

  // Provide a text prompt
  var prompt = ModelContent.Text("Convert this text to audio.");
  await session.SendAsync(content: prompt, turnComplete: true);

  // Start receiving the response
  await ReceiveAudio(session);
}

Queue<float> audioBuffer = new();

async Task ReceiveAudio(LiveSession session) {
  int sampleRate = 24000;
  int channelCount = 1;

  // Create a looping AudioClip to fill with the received audio data
  int bufferSamples = (int)(sampleRate * channelCount);
  AudioClip clip = AudioClip.Create("StreamingPCM", bufferSamples, channelCount,
                                    sampleRate, true, OnAudioRead);

  // Attach the clip to an AudioSource and start playing it
  AudioSource audioSource = GetComponent<AudioSource>();
  audioSource.clip = clip;
  audioSource.loop = true;
  audioSource.Play();

  // Start receiving the response
  await foreach (var message in session.ReceiveAsync()) {
    // Process the received message
    foreach (float[] pcmData in message.AudioAsFloat) {
      lock (audioBuffer) {
        foreach (float sample in pcmData) {
          audioBuffer.Enqueue(sample);
        }
      }
    }
  }
}

// This method is called by the AudioClip to load audio data.
private void OnAudioRead(float[] data) {
  int samplesToProvide = data.Length;
  int samplesProvided = 0;

  lock(audioBuffer) {
    while (samplesProvided < samplesToProvide && audioBuffer.Count > 0) {
      data[samplesProvided] = audioBuffer.Dequeue();
      samplesProvided++;
    }
  }

  while (samplesProvided < samplesToProvide) {
    data[samplesProvided] = 0.0f;
    samplesProvided++;
  }
}