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add scenarios for file and audio transcriptions
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‎.doc_gen/metadata/transcribe-streaming_metadata.yaml‎

Lines changed: 36 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -42,8 +42,8 @@ transcribe-streaming_StartMedicalStreamTranscription:
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- transcribe.java-medical-streaming-demo
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services:
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transcribe-streaming: {StartMedicalStreamTranscription}
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transcribe-streaming_Scenario_StreamEvents:
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title: Generate a transcription of an audio stream using an &AWS; SDK
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transcribe-streaming_Scenario_StreamEvents_File:
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title: Generate a transcription of a file using an &AWS; SDK
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title_abbrev: Transcribe an audio file
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synopsis: generate a transcription of a source audio file using &TSC; streaming.
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category: Scenarios
@@ -58,5 +58,39 @@ transcribe-streaming_Scenario_StreamEvents:
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snippet_tags:
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- swift.transcribe-streaming.all
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- swift.transcribe-streaming.transcribeerror
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Java:
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versions:
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- sdk_version: 2
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github: javav2/example_code/transcribe-streaming
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sdkguide:
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excerpts:
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- description:
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snippet_tags:
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- transcribe.java-streaming-demo-file.main
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C++:
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versions:
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- sdk_version: 1
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github: cpp/example_code/transcribe-streaming
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excerpts:
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- description:
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snippet_tags:
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- transcribe.cpp.stream_transcription_async.code
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services:
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transcribe-streaming: {StartStreamTranscription}
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transcribe-streaming_Scenario_StreamEvents_Microphone:
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title: Generate a transcription from a microphone using an &AWS; SDK
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title_abbrev: Transcribe audio from a microphone
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synopsis: generate a transcription from a microphone using &TSC; streaming.
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category: Scenarios
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languages:
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Java:
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versions:
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- sdk_version: 2
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github: javav2/example_code/transcribe-streaming
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sdkguide:
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excerpts:
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- description:
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snippet_tags:
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- transcribe.java-streaming-demo
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services:
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transcribe-streaming: {StartStreamTranscription}

‎cpp/example_code/transcribe-streaming/README.md‎

Lines changed: 20 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -43,6 +43,13 @@ Code excerpts that show you how to call individual service functions.
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- [StartStreamTranscription](get_transcript.cpp#L28)
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### Scenarios
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Code examples that show you how to accomplish a specific task by calling multiple
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functions within the same service.
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- [Transcribe an audio file](get_transcript.cpp)
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<!--custom.examples.start-->
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<!--custom.examples.end-->
@@ -69,6 +76,18 @@ folder.
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#### Transcribe an audio file
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This example shows you how to generate a transcription of a source audio file using Amazon Transcribe streaming.
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<!--custom.scenario_prereqs.transcribe-streaming_Scenario_StreamEvents_File.start-->
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<!--custom.scenario_prereqs.transcribe-streaming_Scenario_StreamEvents_File.end-->
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<!--custom.scenarios.transcribe-streaming_Scenario_StreamEvents_File.start-->
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<!--custom.scenarios.transcribe-streaming_Scenario_StreamEvents_File.end-->
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### Tests
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⚠ Running tests might result in charges to your AWS account.
@@ -99,4 +118,4 @@ folder.
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Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
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SPDX-License-Identifier: Apache-2.0
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SPDX-License-Identifier: Apache-2.0

‎javav2/example_code/transcribe-streaming/README.md‎

Lines changed: 34 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -34,7 +34,15 @@ For prerequisites, see the [README](../../README.md#Prerequisites) in the `javav
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Code excerpts that show you how to call individual service functions.
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- [StartMedicalStreamTranscription](src/main/java/com/amazonaws/transcribestreaming/TranscribeMedicalStreamingDemoApp.java#L25)
37-
- [StartStreamTranscription](src/main/java/com/amazonaws/transcribestreaming/TranscribeStreamingDemoApp.java#L26)
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- [StartStreamTranscription](src/main/java/com/amazonaws/transcribestreaming/TranscribeStreamingDemoApp.java#L36)
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### Scenarios
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Code examples that show you how to accomplish a specific task by calling multiple
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functions within the same service.
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- [Transcribe an audio file](src/main/java/com/amazonaws/transcribestreaming/TranscribeStreamingDemoFile.java)
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- [Transcribe audio from a microphone](src/main/java/com/amazonaws/transcribestreaming/TranscribeStreamingDemoApp.java)
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<!--custom.examples.start-->
@@ -50,6 +58,30 @@ Code excerpts that show you how to call individual service functions.
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#### Transcribe an audio file
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This example shows you how to generate a transcription of a source audio file using Amazon Transcribe streaming.
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<!--custom.scenario_prereqs.transcribe-streaming_Scenario_StreamEvents_File.start-->
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<!--custom.scenario_prereqs.transcribe-streaming_Scenario_StreamEvents_File.end-->
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<!--custom.scenarios.transcribe-streaming_Scenario_StreamEvents_File.start-->
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<!--custom.scenarios.transcribe-streaming_Scenario_StreamEvents_File.end-->
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#### Transcribe audio from a microphone
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This example shows you how to generate a transcription from a microphone using Amazon Transcribe streaming.
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<!--custom.scenario_prereqs.transcribe-streaming_Scenario_StreamEvents_Microphone.start-->
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<!--custom.scenario_prereqs.transcribe-streaming_Scenario_StreamEvents_Microphone.end-->
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<!--custom.scenarios.transcribe-streaming_Scenario_StreamEvents_Microphone.start-->
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<!--custom.scenarios.transcribe-streaming_Scenario_StreamEvents_Microphone.end-->
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### Tests
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⚠ Running tests might result in charges to your AWS account.
@@ -76,4 +108,4 @@ in the `javav2` folder.
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Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
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SPDX-License-Identifier: Apache-2.0
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SPDX-License-Identifier: Apache-2.0

‎javav2/example_code/transcribe-streaming/src/main/java/com/amazonaws/transcribestreaming/TranscribeStreamingDemoApp.java‎

Lines changed: 23 additions & 22 deletions
Original file line numberDiff line numberDiff line change
@@ -12,8 +12,18 @@
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import software.amazon.awssdk.regions.Region;
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import software.amazon.awssdk.services.transcribestreaming.TranscribeStreamingAsyncClient;
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import software.amazon.awssdk.services.transcribestreaming.model.*;
15-
import javax.sound.sampled.*;
16-
import java.io.*;
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16+
import javax.sound.sampled.AudioFormat;
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import javax.sound.sampled.AudioInputStream;
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import javax.sound.sampled.AudioSystem;
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import javax.sound.sampled.DataLine;
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import javax.sound.sampled.LineUnavailableException;
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import javax.sound.sampled.TargetDataLine;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.PrintWriter;
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import java.io.StringWriter;
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import java.io.UncheckedIOException;
1727
import java.net.URISyntaxException;
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import java.nio.ByteBuffer;
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import java.util.List;
@@ -28,7 +38,7 @@ public class TranscribeStreamingDemoApp {
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private static final Region REGION = Region.US_EAST_1;
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private static TranscribeStreamingAsyncClient client;
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31-
public static void main(String args[])
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public static void main(String[] args)
3242
throws URISyntaxException, ExecutionException, InterruptedException, LineUnavailableException {
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3444
client = TranscribeStreamingAsyncClient.builder()
@@ -85,7 +95,7 @@ private static StartStreamTranscriptionResponseHandler getResponseHandler() {
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System.out.println(e.getMessage());
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StringWriter sw = new StringWriter();
8797
e.printStackTrace(new PrintWriter(sw));
88-
System.out.println("Error Occurred: " + sw.toString());
98+
System.out.println("Error Occurred: " + sw);
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})
90100
.onComplete(() -> {
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System.out.println("=== All records stream successfully ===");
@@ -101,19 +111,10 @@ private static StartStreamTranscriptionResponseHandler getResponseHandler() {
101111
.build();
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}
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104-
private InputStream getStreamFromFile(String audioFileName) {
105-
try {
106-
File inputFile = new File(getClass().getClassLoader().getResource(audioFileName).getFile());
107-
InputStream audioStream = new FileInputStream(inputFile);
108-
return audioStream;
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} catch (FileNotFoundException e) {
110-
throw new RuntimeException(e);
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}
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}
113-
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private static class AudioStreamPublisher implements Publisher<AudioStream> {
115-
private final InputStream inputStream;
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private static Subscription currentSubscription;
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private final InputStream inputStream;
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private AudioStreamPublisher(InputStream inputStream) {
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this.inputStream = inputStream;
@@ -122,22 +123,22 @@ private AudioStreamPublisher(InputStream inputStream) {
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@Override
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public void subscribe(Subscriber<? super AudioStream> s) {
124125

125-
if (this.currentSubscription == null) {
126-
this.currentSubscription = new SubscriptionImpl(s, inputStream);
126+
if (currentSubscription == null) {
127+
currentSubscription = new SubscriptionImpl(s, inputStream);
127128
} else {
128-
this.currentSubscription.cancel();
129-
this.currentSubscription = new SubscriptionImpl(s, inputStream);
129+
currentSubscription.cancel();
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currentSubscription = new SubscriptionImpl(s, inputStream);
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}
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s.onSubscribe(currentSubscription);
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}
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}
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public static class SubscriptionImpl implements Subscription {
136-
private static final int CHUNK_SIZE_IN_BYTES = 1024 * 1;
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private static final int CHUNK_SIZE_IN_BYTES = 1024;
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private final Subscriber<? super AudioStream> subscriber;
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private final InputStream inputStream;
139-
private ExecutorService executor = Executors.newFixedThreadPool(1);
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private AtomicLong demand = new AtomicLong(0);
140+
private final ExecutorService executor = Executors.newFixedThreadPool(1);
141+
private final AtomicLong demand = new AtomicLong(0);
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SubscriptionImpl(Subscriber<? super AudioStream> s, InputStream inputStream) {
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this.subscriber = s;

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