@Test public void streamingRecognize() throws Exception { byte[] audioBytes = Resources.toByteArray(new URL("https://storage.googleapis.com/gapic-toolkit/hello.flac")); StreamingRecognitionConfig streamingConfig = StreamingRecognitionConfig.newBuilder().setConfig(config()).build(); ResponseApiStreamingObserver<StreamingRecognizeResponse> responseObserver = new ResponseApiStreamingObserver<>(); ApiStreamObserver<StreamingRecognizeRequest> requestObserver = speechClient.streamingRecognizeCallable().bidiStreamingCall(responseObserver); // The first request must **only** contain the audio configuration: requestObserver.onNext( StreamingRecognizeRequest.newBuilder().setStreamingConfig(streamingConfig).build()); // Subsequent requests must **only** contain the audio data. requestObserver.onNext( StreamingRecognizeRequest.newBuilder() .setAudioContent(ByteString.copyFrom(audioBytes)) .build()); // Mark transmission as completed after sending the data. requestObserver.onCompleted(); List<StreamingRecognizeResponse> responses = responseObserver.future().get(); Truth.assertThat(responses.size()).isGreaterThan(0); Truth.assertThat(responses.get(0).getResultsCount()).isGreaterThan(0); Truth.assertThat(responses.get(0).getResults(0).getAlternativesCount()).isGreaterThan(0); String text = responses.get(0).getResults(0).getAlternatives(0).getTranscript(); Truth.assertThat(text).isEqualTo("hello"); }
@Override public void onNext(StreamingRecognizeResponse response) { String text = null; boolean isFinal = false; if (response.getResultsCount() > 0) { final StreamingRecognitionResult result = response.getResults(0); isFinal = result.getIsFinal(); if (result.getAlternativesCount() > 0) { final SpeechRecognitionAlternative alternative = result.getAlternatives(0); text = alternative.getTranscript(); } } if (text != null) { for (Listener listener : mListeners) { listener.onSpeechRecognized(text, isFinal); } } }