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Merge pull request #249 from GoogleCloudPlatform/gcs-audio-input
added gcs read for audio file
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66 changes: 66 additions & 0 deletions
66
speech/grpc/src/main/java/com/google/cloud/speech/grpc/demos/AudioRequestFactory.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,66 @@ | ||
| /* | ||
| * Copyright 2016 Google Inc. All Rights Reserved. | ||
| * | ||
| * 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. | ||
| */ | ||
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| package com.google.cloud.speech.grpc.demos; | ||
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| import com.google.cloud.speech.v1.AudioRequest; | ||
| import com.google.protobuf.ByteString; | ||
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| import java.io.IOException; | ||
| import java.net.URI; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
| import java.nio.file.Paths; | ||
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| /* | ||
| * AudioRequestFactory takes a URI as an input and creates an AudioRequest. The URI can point to a | ||
| * local file or a file on Google Cloud Storage. | ||
| */ | ||
| public class AudioRequestFactory { | ||
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| private static final String FILE_SCHEME = "file"; | ||
| private static final String GS_SCHEME = "gs"; | ||
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| /** | ||
| * Takes an input URI of form $scheme:// and converts to audio request. | ||
| * | ||
| * @param uri input uri | ||
| * @return AudioRequest audio request | ||
| */ | ||
| public static AudioRequest createRequest(URI uri) | ||
| throws IOException { | ||
| if (uri.getScheme() == null || uri.getScheme().equals(FILE_SCHEME)) { | ||
| Path path = Paths.get(uri); | ||
| return audioFromBytes(Files.readAllBytes(path)); | ||
| } else if (uri.getScheme().equals(GS_SCHEME)) { | ||
| return AudioRequest.newBuilder().setUri(uri.toString()).build(); | ||
| } | ||
| throw new RuntimeException("scheme not supported " + uri.getScheme()); | ||
| } | ||
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| /** | ||
| * Convert bytes to AudioRequest. | ||
| * | ||
| * @param bytes input bytes | ||
| * @return AudioRequest audio request | ||
| */ | ||
| private static AudioRequest audioFromBytes(byte[] bytes) { | ||
| return AudioRequest.newBuilder() | ||
| .setContent(ByteString.copyFrom(bytes)) | ||
| .build(); | ||
| } | ||
| } |
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63 changes: 63 additions & 0 deletions
63
speech/grpc/src/test/java/com/google/cloud/speech/grpc/demos/AudioRequestFactoryTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| /* | ||
| * Copyright 2016 Google Inc. All Rights Reserved. | ||
| * | ||
| * 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. | ||
| */ | ||
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| package com.google.cloud.speech.grpc.demos; | ||
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| import static org.junit.Assert.assertEquals; | ||
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| import com.google.cloud.speech.v1.AudioRequest; | ||
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| import org.junit.Test; | ||
| import org.junit.runner.RunWith; | ||
| import org.junit.runners.JUnit4; | ||
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| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.net.URI; | ||
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| /** | ||
| * Unit tests for {@link AudioRequestFactory}. | ||
| */ | ||
| @RunWith(JUnit4.class) | ||
| public class AudioRequestFactoryTest { | ||
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| @Test | ||
| public void verifyBytesInSizeFromLocalFile() throws IOException { | ||
| URI uri = new File("resources/audio.raw").toURI(); | ||
| AudioRequest audio = AudioRequestFactory.createRequest(uri); | ||
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| int numBytes = audio.getContent().toByteArray().length; | ||
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| //assert the number of bytes in the audio as 57958 | ||
| assertEquals(57958, numBytes); | ||
| } | ||
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| @Test | ||
| public void verifyBytesInSizeFromGoogleStorageFile() throws IOException { | ||
| String audioUri = "gs://cloud-samples-tests/speech/audio.raw"; | ||
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| URI uri = URI.create(audioUri); | ||
| AudioRequest audio = AudioRequestFactory.createRequest(uri); | ||
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| int numBytes = audio.getContent().toByteArray().length; | ||
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| //assert the number of bytes in the audio as 0 | ||
| assertEquals(0, numBytes); | ||
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| //assert the uri | ||
| assertEquals(audioUri, audio.getUri()); | ||
| } | ||
| } |