Examples with AudioEncoding com.google.cloud.speech.v1p1beta1.RecognitionConfig.AudioEncoding used on opensource projects

Example 1 with AudioEncoding

use of com.google.cloud.speech.v1p1beta1.RecognitionConfig.AudioEncoding in project java-speech by googleapis.

the class ExportToStorageBeta method exportToStorage.

// Exports the recognized output to specified GCS destination.
public static void exportToStorage(String inputUri, String outputStorageUri, String encoding, int sampleRateHertz, String languageCode, String bucketName, String objectName) throws IOException, ExecutionException, InterruptedException {
    // the "close" method on the client to safely clean up any remaining background resources.
    try (SpeechClient speechClient = SpeechClient.create()) {
        RecognitionAudio audio = RecognitionAudio.newBuilder().setUri(inputUri).build();
        AudioEncoding audioEncoding = AudioEncoding.valueOf(encoding);
        // Instantiates a client
        Storage storage = StorageOptions.getDefaultInstance().getService();
        // Pass in the URI of the Cloud Storage bucket to hold the transcription
        TranscriptOutputConfig outputConfig = TranscriptOutputConfig.newBuilder().setGcsUri(outputStorageUri).build();
        RecognitionConfig config = RecognitionConfig.newBuilder().setEncoding(audioEncoding).setSampleRateHertz(sampleRateHertz).setLanguageCode(languageCode).build();
        LongRunningRecognizeRequest request = LongRunningRecognizeRequest.newBuilder().setConfig(config).setAudio(audio).setOutputConfig(outputConfig).build();
        OperationFuture<LongRunningRecognizeResponse, LongRunningRecognizeMetadata> future = speechClient.longRunningRecognizeAsync(request);
        System.out.println("Waiting for operation to complete...");
        future.get();
        // Get blob given bucket and object name
        Blob blob = storage.get(BlobId.of(bucketName, objectName));
        // Extract byte contents from blob
        byte[] bytes = blob.getContent();
        // Get decoded representation
        String decoded = new String(bytes, "UTF-8");
        // Create json object
        JSONObject jsonObject = new JSONObject(decoded);
        // Get json string
        String json = jsonObject.toString();
        // Specefy the proto type message
        LongRunningRecognizeResponse.Builder builder = LongRunningRecognizeResponse.newBuilder();
        // Construct a parser
        JsonFormat.Parser parser = JsonFormat.parser().ignoringUnknownFields();
        // Parses from JSON into a protobuf message.
        parser.merge(json, builder);
        // Get the converted values
        LongRunningRecognizeResponse storageResponse = builder.build();
        System.out.println("Results saved to specified output Cloud Storage bucket.");
        String output = storageResponse.getResultsList().stream().map(result -> String.valueOf(result.getAlternatives(0).getTranscript())).collect(Collectors.joining("\n"));
        System.out.printf("Transcription: %s", output);
    }
}