AWS Transcribe S3 .wav 文件到文本
AWS Transcribe S3 .wav file to text
我正在尝试使用 aws Transcribe 将 wav 文件转换为文本。我已将一个 wav 文件上传到 S3，它位于此处，它具有 public read/write 权限：https://s3.us-east-1.amazonaws.com/csld8xmsdksdf8s9sk3mmdjsdifkjksdijsldk/Transcribe2.wav。 wav 文件有效。我可以在我的浏览器中下载它并重播它（它听起来像原始录音），所以我认为我们可以排除无效的输入文件、文件权限等。
我正在使用 java 版本：1.8.0_275 for mac.
我希望我的程序返回转录文本：“你好亚马逊订阅，这是什么？”
这是实际的程序输出，包括异常：
/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/bin/java "-javaagent:/Applications/IntelliJ IDEA CE.app/Contents/lib/idea_rt.jar=60898:/Applications/IntelliJ IDEA CE.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath /Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/jaccess.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/lib/tools.jar:/Users/cdornin/work/transcribe/target/classes:/Users/cdornin/.m2/repository/org/apiguardian/apiguardian-api/1.0.0/apiguardian-api-1.0.0.jar:/Users/cdornin/.m2/repository/org/junit/platform/junit-platform-commons/1.4.0/junit-platform-commons-1.4.0.jar:/Users/cdornin/.m2/repository/org/slf4j/slf4j-log4j12/1.7.25/slf4j-log4j12-1.7.25.jar:/Users/cdornin/.m2/repository/org/slf4j/slf4j-api/1.7.25/slf4j-api-1.7.25.jar:/Users/cdornin/.m2/repository/log4j/log4j/1.2.17/log4j-1.2.17.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/transcribe/2.15.65/transcribe-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/protocol-core/2.15.65/protocol-core-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/aws-json-protocol/2.15.65/aws-json-protocol-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/sdk-core/2.15.65/sdk-core-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/profiles/2.15.65/profiles-2.15.65.jar:/Users/cdornin/.m2/repository/org/reactivestreams/reactive-streams/1.0.2/reactive-streams-1.0.2.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/auth/2.15.65/auth-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/eventstream/eventstream/1.0.1/eventstream-1.0.1.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/http-client-spi/2.15.65/http-client-spi-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/regions/2.15.65/regions-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/annotations/2.15.65/annotations-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/utils/2.15.65/utils-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/aws-core/2.15.65/aws-core-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/metrics-spi/2.15.65/metrics-spi-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/apache-client/2.15.65/apache-client-2.15.65.jar:/Users/cdornin/.m2/repository/org/apache/httpcomponents/httpclient/4.5.13/httpclient-4.5.13.jar:/Users/cdornin/.m2/repository/commons-codec/commons-codec/1.11/commons-codec-1.11.jar:/Users/cdornin/.m2/repository/org/apache/httpcomponents/httpcore/4.4.11/httpcore-4.4.11.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/netty-nio-client/2.15.65/netty-nio-client-2.15.65.jar:/Users/cdornin/.m2/repository/io/netty/netty-codec-http/4.1.53.Final/netty-codec-http-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-codec-http2/4.1.53.Final/netty-codec-http2-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-codec/4.1.53.Final/netty-codec-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-transport/4.1.53.Final/netty-transport-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-resolver/4.1.53.Final/netty-resolver-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-common/4.1.53.Final/netty-common-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-buffer/4.1.53.Final/netty-buffer-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-handler/4.1.53.Final/netty-handler-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-transport-native-epoll/4.1.53.Final/netty-transport-native-epoll-4.1.53.Final-linux-x86_64.jar:/Users/cdornin/.m2/repository/io/netty/netty-transport-native-unix-common/4.1.53.Final/netty-transport-native-unix-common-4.1.53.Final.jar:/Users/cdornin/.m2/repository/com/typesafe/netty/netty-reactive-streams-http/2.0.4/netty-reactive-streams-http-2.0.4.jar:/Users/cdornin/.m2/repository/com/typesafe/netty/netty-reactive-streams/2.0.4/netty-reactive-streams-2.0.4.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/transcribestreaming/2.15.65/transcribestreaming-2.15.65.jar:/Users/cdornin/.m2/repository/com/amazonaws/aws-java-sdk-s3/1.11.939/aws-java-sdk-s3-1.11.939.jar:/Users/cdornin/.m2/repository/com/amazonaws/aws-java-sdk-kms/1.11.939/aws-java-sdk-kms-1.11.939.jar:/Users/cdornin/.m2/repository/com/amazonaws/aws-java-sdk-core/1.11.939/aws-java-sdk-core-1.11.939.jar:/Users/cdornin/.m2/repository/commons-logging/commons-logging/1.1.3/commons-logging-1.1.3.jar:/Users/cdornin/.m2/repository/software/amazon/ion/ion-java/1.0.2/ion-java-1.0.2.jar:/Users/cdornin/.m2/repository/com/fasterxml/jackson/dataformat/jackson-dataformat-cbor/2.6.7/jackson-dataformat-cbor-2.6.7.jar:/Users/cdornin/.m2/repository/joda-time/joda-time/2.8.1/joda-time-2.8.1.jar:/Users/cdornin/.m2/repository/com/amazonaws/jmespath-java/1.11.939/jmespath-java-1.11.939.jar:/Users/cdornin/.m2/repository/com/amazonaws/aws-java-sdk-transcribe/1.11.939/aws-java-sdk-transcribe-1.11.939.jar:/Users/cdornin/.m2/repository/io/minio/minio/8.0.3/minio-8.0.3.jar:/Users/cdornin/.m2/repository/com/carrotsearch/thirdparty/simple-xml-safe/2.7.1/simple-xml-safe-2.7.1.jar:/Users/cdornin/.m2/repository/com/google/guava/guava/29.0-jre/guava-29.0-jre.jar:/Users/cdornin/.m2/repository/com/google/guava/failureaccess/1.0.1/failureaccess-1.0.1.jar:/Users/cdornin/.m2/repository/com/google/guava/listenablefuture/9999.0-empty-to-avoid-conflict-with-guava/listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar:/Users/cdornin/.m2/repository/com/google/code/findbugs/jsr305/3.0.2/jsr305-3.0.2.jar:/Users/cdornin/.m2/repository/org/checkerframework/checker-qual/2.11.1/checker-qual-2.11.1.jar:/Users/cdornin/.m2/repository/com/google/errorprone/error_prone_annotations/2.3.4/error_prone_annotations-2.3.4.jar:/Users/cdornin/.m2/repository/com/google/j2objc/j2objc-annotations/1.3/j2objc-annotations-1.3.jar:/Users/cdornin/.m2/repository/com/squareup/okhttp3/okhttp/4.8.1/okhttp-4.8.1.jar:/Users/cdornin/.m2/repository/com/squareup/okio/okio/2.7.0/okio-2.7.0.jar:/Users/cdornin/.m2/repository/org/jetbrains/kotlin/kotlin-stdlib-common/1.3.70/kotlin-stdlib-common-1.3.70.jar:/Users/cdornin/.m2/repository/org/jetbrains/kotlin/kotlin-stdlib/1.3.72/kotlin-stdlib-1.3.72.jar:/Users/cdornin/.m2/repository/org/jetbrains/annotations/13.0/annotations-13.0.jar:/Users/cdornin/.m2/repository/com/fasterxml/jackson/core/jackson-annotations/2.11.2/jackson-annotations-2.11.2.jar:/Users/cdornin/.m2/repository/com/fasterxml/jackson/core/jackson-core/2.11.2/jackson-core-2.11.2.jar:/Users/cdornin/.m2/repository/com/fasterxml/jackson/core/jackson-databind/2.11.2/jackson-databind-2.11.2.jar com.amazonaws.transcribe.AmazonTranscribeServiceImpl
log4j:WARN Continuable parsing error 2 and column 30
log4j:WARN Document root element "Configuration", must match DOCTYPE root "null".
log4j:WARN Continuable parsing error 2 and column 30
log4j:WARN Document is invalid: no grammar found.
log4j:ERROR DOM element is - not a <log4j:configuration> element.
log4j:WARN No appenders could be found for logger (com.amazonaws.AmazonWebServiceClient).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Exception in thread "main" com.amazonaws.services.transcribe.model.AmazonTranscribeException: null (Service: AmazonTranscribe; Status Code: 400; Error Code: null; Request ID: 6BBE51FDC2CA981B; Proxy: null)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1819)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleServiceErrorResponse(AmazonHttpClient.java:1403)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1372)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1145)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:802)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:770)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:744)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access0(AmazonHttpClient.java:704)
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:686)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:550)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:530)
at com.amazonaws.services.transcribe.AmazonTranscribeClient.doInvoke(AmazonTranscribeClient.java:1995)
at com.amazonaws.services.transcribe.AmazonTranscribeClient.invoke(AmazonTranscribeClient.java:1962)
at com.amazonaws.services.transcribe.AmazonTranscribeClient.invoke(AmazonTranscribeClient.java:1951)
at com.amazonaws.services.transcribe.AmazonTranscribeClient.executeStartTranscriptionJob(AmazonTranscribeClient.java:1712)
at com.amazonaws.services.transcribe.AmazonTranscribeClient.startTranscriptionJob(AmazonTranscribeClient.java:1681)
at com.amazonaws.transcribe.AmazonTranscribeServiceImpl.callTranscribeService(AmazonTranscribeServiceImpl.java:34)
at com.amazonaws.transcribe.AmazonTranscribeServiceImpl.main(AmazonTranscribeServiceImpl.java:20)
这是我的 java 代码（添加您的 aws 密钥和密码）
package com.amazonaws.transcribe;
import com.amazonaws.ClientConfiguration;
import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
import com.amazonaws.client.builder.AwsClientBuilder;
import com.amazonaws.services.transcribe.AmazonTranscribe;
import com.amazonaws.services.transcribe.AmazonTranscribeClientBuilder;
import com.amazonaws.services.transcribe.model.Media;
import com.amazonaws.services.transcribe.model.StartTranscriptionJobRequest;
import com.amazonaws.services.transcribe.model.StartTranscriptionJobResult;
/**
* @author ravindu.s
*/
public class AmazonTranscribeServiceImpl {
public static void main(String[] args) throws Exception {
System.setProperty("aws.accessKeyId", "myKey");
System.setProperty("aws.secretAccessKey", "mySecret");
callTranscribeService("https://s3.us-east-1.amazonaws.com/csld8xmsdksdf8s9sk3mmdjsdifkjksdijsldk/Transcribe2.wav");
}
public static void callTranscribeService(String mediaFile) {
ClientConfiguration clientConfig = new ClientConfiguration();
clientConfig.setConnectionTimeout(60000);
clientConfig.setMaxConnections(100);
clientConfig.setSocketTimeout(60000);
AmazonTranscribe transcribeClient = AmazonTranscribeClientBuilder.standard().withCredentials(
DefaultAWSCredentialsProviderChain.getInstance()).withEndpointConfiguration(
new AwsClientBuilder.EndpointConfiguration(mediaFile, "us-east-1")).withClientConfiguration(clientConfig).build();
StartTranscriptionJobRequest request = buildRequest(mediaFile);
StartTranscriptionJobResult response = transcribeClient.startTranscriptionJob(request);
System.out.println(response.getTranscriptionJob().getTranscriptionJobStatus());
}
private static StartTranscriptionJobRequest buildRequest(String mediaFile) {
StartTranscriptionJobRequest request = new StartTranscriptionJobRequest();
request.setMediaSampleRateHertz(16000);
request.setMediaFormat("wav");
request.setLanguageCode("en-US");
request.setTranscriptionJobName("JOB-001");
Media media = new Media();
media.setMediaFileUri(mediaFile);
request.setMedia(media);
return request;
}
}
这是我的 pom.xml 文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>play</groupId>
<artifactId>transcribeTest</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>8</source>
<target>8</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<!--<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>5.4.2</version>
<scope>test</scope>
</dependency>-->
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>5.4.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-commons</artifactId>
<version>1.4.0</version>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-launcher</artifactId>
<version>1.4.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.25</version>
</dependency>
<dependency>
<groupId>software.amazon.awssdk</groupId>
<artifactId>transcribe</artifactId>
<version>2.15.65</version>
</dependency>
<!-- https://mvnrepository.com/artifact/software.amazon.awssdk/transcribestreaming -->
<dependency>
<groupId>software.amazon.awssdk</groupId>
<artifactId>transcribestreaming</artifactId>
<version>2.15.65</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.amazonaws/aws-java-sdk-s3 -->
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-s3</artifactId>
<version>1.11.939</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.amazonaws/aws-java-sdk-transcribe -->
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-transcribe</artifactId>
<version>1.11.939</version>
</dependency>
<dependency>
<groupId>io.minio</groupId>
<artifactId>minio</artifactId>
<version>8.0.3</version>
</dependency>
</dependencies>
</project>
这是一个 Java 代码示例，用于转录位于 C: 中的音频文件。这是V2.
import org.reactivestreams.Publisher;
import org.reactivestreams.Subscriber;
import org.reactivestreams.Subscription;
import software.amazon.awssdk.core.SdkBytes;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.transcribestreaming.TranscribeStreamingAsyncClient;
import software.amazon.awssdk.services.transcribestreaming.model.*;
import javax.sound.sampled.*;
import java.io.*;
import java.net.URISyntaxException;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicLong;
public class TranscribeStreamingDemoFile {
private static final Region REGION = Region.US_EAST_1;
private static TranscribeStreamingAsyncClient client;
public static void main(String args[]) throws URISyntaxException, ExecutionException, InterruptedException, LineUnavailableException {
client = TranscribeStreamingAsyncClient.builder()
.region(REGION)
.build();
CompletableFuture<Void> result = client.startStreamTranscription(getRequest(16000),
new AudioStreamPublisher(getStreamFromFile()),
getResponseHandler());
result.get();
client.close();
}
private static InputStream getStreamFromFile() {
try {
File inputFile = new File("C:\test.wav");
InputStream audioStream = new FileInputStream(inputFile);
return audioStream;
} catch (FileNotFoundException e) {
throw new RuntimeException(e);
}
}
private static StartStreamTranscriptionRequest getRequest(Integer mediaSampleRateHertz) {
return StartStreamTranscriptionRequest.builder()
.languageCode(LanguageCode.EN_US)
.mediaEncoding(MediaEncoding.PCM)
.mediaSampleRateHertz(mediaSampleRateHertz)
.build();
}
private static StartStreamTranscriptionResponseHandler getResponseHandler() {
return StartStreamTranscriptionResponseHandler.builder()
.onResponse(r -> {
System.out.println("Received Initial response");
})
.onError(e -> {
System.out.println(e.getMessage());
StringWriter sw = new StringWriter();
e.printStackTrace(new PrintWriter(sw));
System.out.println("Error Occurred: " + sw.toString());
})
.onComplete(() -> {
System.out.println("=== All records stream successfully ===");
})
.subscriber(event -> {
List<Result> results = ((TranscriptEvent) event).transcript().results();
if (results.size() > 0) {
if (!results.get(0).alternatives().get(0).transcript().isEmpty()) {
System.out.println(results.get(0).alternatives().get(0).transcript());
}
}
})
.build();
}
private static class AudioStreamPublisher implements Publisher<AudioStream> {
private final InputStream inputStream;
private static Subscription currentSubscription;
private AudioStreamPublisher(InputStream inputStream) {
this.inputStream = inputStream;
}
@Override
public void subscribe(Subscriber<? super AudioStream> s) {
if (this.currentSubscription == null) {
this.currentSubscription = new SubscriptionImpl(s, inputStream);
} else {
this.currentSubscription.cancel();
this.currentSubscription = new SubscriptionImpl(s, inputStream);
}
s.onSubscribe(currentSubscription);
}
}
public static class SubscriptionImpl implements Subscription {
private static final int CHUNK_SIZE_IN_BYTES = 1024 * 1;
private final Subscriber<? super AudioStream> subscriber;
private final InputStream inputStream;
private ExecutorService executor = Executors.newFixedThreadPool(1);
private AtomicLong demand = new AtomicLong(0);
SubscriptionImpl(Subscriber<? super AudioStream> s, InputStream inputStream) {
this.subscriber = s;
this.inputStream = inputStream;
}
@Override
public void request(long n) {
if (n <= 0) {
subscriber.onError(new IllegalArgumentException("Demand must be positive"));
}
demand.getAndAdd(n);
executor.submit(() -> {
try {
do {
ByteBuffer audioBuffer = getNextEvent();
if (audioBuffer.remaining() > 0) {
AudioEvent audioEvent = audioEventFromBuffer(audioBuffer);
subscriber.onNext(audioEvent);
} else {
subscriber.onComplete();
break;
}
} while (demand.decrementAndGet() > 0);
} catch (Exception e) {
subscriber.onError(e);
}
});
}
@Override
public void cancel() {
executor.shutdown();
}
private ByteBuffer getNextEvent() {
ByteBuffer audioBuffer = null;
byte[] audioBytes = new byte[CHUNK_SIZE_IN_BYTES];
int len = 0;
try {
len = inputStream.read(audioBytes);
if (len <= 0) {
audioBuffer = ByteBuffer.allocate(0);
} else {
audioBuffer = ByteBuffer.wrap(audioBytes, 0, len);
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
return audioBuffer;
}
private AudioEvent audioEventFromBuffer(ByteBuffer bb) {
return AudioEvent.builder()
.audioChunk(SdkBytes.fromByteBuffer(bb))
.build();
}
}
}
我的代码有一个小错误。这条线不是必需的，当我删除时，它起作用了：
withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration(mediaFile, "us-east-1"))
我正在尝试使用 aws Transcribe 将 wav 文件转换为文本。我已将一个 wav 文件上传到 S3，它位于此处，它具有 public read/write 权限：https://s3.us-east-1.amazonaws.com/csld8xmsdksdf8s9sk3mmdjsdifkjksdijsldk/Transcribe2.wav。 wav 文件有效。我可以在我的浏览器中下载它并重播它（它听起来像原始录音），所以我认为我们可以排除无效的输入文件、文件权限等。
我正在使用 java 版本：1.8.0_275 for mac.
我希望我的程序返回转录文本：“你好亚马逊订阅，这是什么？”
这是实际的程序输出，包括异常：
/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/bin/java "-javaagent:/Applications/IntelliJ IDEA CE.app/Contents/lib/idea_rt.jar=60898:/Applications/IntelliJ IDEA CE.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath /Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/jaccess.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/lib/tools.jar:/Users/cdornin/work/transcribe/target/classes:/Users/cdornin/.m2/repository/org/apiguardian/apiguardian-api/1.0.0/apiguardian-api-1.0.0.jar:/Users/cdornin/.m2/repository/org/junit/platform/junit-platform-commons/1.4.0/junit-platform-commons-1.4.0.jar:/Users/cdornin/.m2/repository/org/slf4j/slf4j-log4j12/1.7.25/slf4j-log4j12-1.7.25.jar:/Users/cdornin/.m2/repository/org/slf4j/slf4j-api/1.7.25/slf4j-api-1.7.25.jar:/Users/cdornin/.m2/repository/log4j/log4j/1.2.17/log4j-1.2.17.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/transcribe/2.15.65/transcribe-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/protocol-core/2.15.65/protocol-core-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/aws-json-protocol/2.15.65/aws-json-protocol-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/sdk-core/2.15.65/sdk-core-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/profiles/2.15.65/profiles-2.15.65.jar:/Users/cdornin/.m2/repository/org/reactivestreams/reactive-streams/1.0.2/reactive-streams-1.0.2.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/auth/2.15.65/auth-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/eventstream/eventstream/1.0.1/eventstream-1.0.1.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/http-client-spi/2.15.65/http-client-spi-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/regions/2.15.65/regions-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/annotations/2.15.65/annotations-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/utils/2.15.65/utils-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/aws-core/2.15.65/aws-core-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/metrics-spi/2.15.65/metrics-spi-2.15.65.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/apache-client/2.15.65/apache-client-2.15.65.jar:/Users/cdornin/.m2/repository/org/apache/httpcomponents/httpclient/4.5.13/httpclient-4.5.13.jar:/Users/cdornin/.m2/repository/commons-codec/commons-codec/1.11/commons-codec-1.11.jar:/Users/cdornin/.m2/repository/org/apache/httpcomponents/httpcore/4.4.11/httpcore-4.4.11.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/netty-nio-client/2.15.65/netty-nio-client-2.15.65.jar:/Users/cdornin/.m2/repository/io/netty/netty-codec-http/4.1.53.Final/netty-codec-http-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-codec-http2/4.1.53.Final/netty-codec-http2-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-codec/4.1.53.Final/netty-codec-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-transport/4.1.53.Final/netty-transport-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-resolver/4.1.53.Final/netty-resolver-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-common/4.1.53.Final/netty-common-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-buffer/4.1.53.Final/netty-buffer-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-handler/4.1.53.Final/netty-handler-4.1.53.Final.jar:/Users/cdornin/.m2/repository/io/netty/netty-transport-native-epoll/4.1.53.Final/netty-transport-native-epoll-4.1.53.Final-linux-x86_64.jar:/Users/cdornin/.m2/repository/io/netty/netty-transport-native-unix-common/4.1.53.Final/netty-transport-native-unix-common-4.1.53.Final.jar:/Users/cdornin/.m2/repository/com/typesafe/netty/netty-reactive-streams-http/2.0.4/netty-reactive-streams-http-2.0.4.jar:/Users/cdornin/.m2/repository/com/typesafe/netty/netty-reactive-streams/2.0.4/netty-reactive-streams-2.0.4.jar:/Users/cdornin/.m2/repository/software/amazon/awssdk/transcribestreaming/2.15.65/transcribestreaming-2.15.65.jar:/Users/cdornin/.m2/repository/com/amazonaws/aws-java-sdk-s3/1.11.939/aws-java-sdk-s3-1.11.939.jar:/Users/cdornin/.m2/repository/com/amazonaws/aws-java-sdk-kms/1.11.939/aws-java-sdk-kms-1.11.939.jar:/Users/cdornin/.m2/repository/com/amazonaws/aws-java-sdk-core/1.11.939/aws-java-sdk-core-1.11.939.jar:/Users/cdornin/.m2/repository/commons-logging/commons-logging/1.1.3/commons-logging-1.1.3.jar:/Users/cdornin/.m2/repository/software/amazon/ion/ion-java/1.0.2/ion-java-1.0.2.jar:/Users/cdornin/.m2/repository/com/fasterxml/jackson/dataformat/jackson-dataformat-cbor/2.6.7/jackson-dataformat-cbor-2.6.7.jar:/Users/cdornin/.m2/repository/joda-time/joda-time/2.8.1/joda-time-2.8.1.jar:/Users/cdornin/.m2/repository/com/amazonaws/jmespath-java/1.11.939/jmespath-java-1.11.939.jar:/Users/cdornin/.m2/repository/com/amazonaws/aws-java-sdk-transcribe/1.11.939/aws-java-sdk-transcribe-1.11.939.jar:/Users/cdornin/.m2/repository/io/minio/minio/8.0.3/minio-8.0.3.jar:/Users/cdornin/.m2/repository/com/carrotsearch/thirdparty/simple-xml-safe/2.7.1/simple-xml-safe-2.7.1.jar:/Users/cdornin/.m2/repository/com/google/guava/guava/29.0-jre/guava-29.0-jre.jar:/Users/cdornin/.m2/repository/com/google/guava/failureaccess/1.0.1/failureaccess-1.0.1.jar:/Users/cdornin/.m2/repository/com/google/guava/listenablefuture/9999.0-empty-to-avoid-conflict-with-guava/listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar:/Users/cdornin/.m2/repository/com/google/code/findbugs/jsr305/3.0.2/jsr305-3.0.2.jar:/Users/cdornin/.m2/repository/org/checkerframework/checker-qual/2.11.1/checker-qual-2.11.1.jar:/Users/cdornin/.m2/repository/com/google/errorprone/error_prone_annotations/2.3.4/error_prone_annotations-2.3.4.jar:/Users/cdornin/.m2/repository/com/google/j2objc/j2objc-annotations/1.3/j2objc-annotations-1.3.jar:/Users/cdornin/.m2/repository/com/squareup/okhttp3/okhttp/4.8.1/okhttp-4.8.1.jar:/Users/cdornin/.m2/repository/com/squareup/okio/okio/2.7.0/okio-2.7.0.jar:/Users/cdornin/.m2/repository/org/jetbrains/kotlin/kotlin-stdlib-common/1.3.70/kotlin-stdlib-common-1.3.70.jar:/Users/cdornin/.m2/repository/org/jetbrains/kotlin/kotlin-stdlib/1.3.72/kotlin-stdlib-1.3.72.jar:/Users/cdornin/.m2/repository/org/jetbrains/annotations/13.0/annotations-13.0.jar:/Users/cdornin/.m2/repository/com/fasterxml/jackson/core/jackson-annotations/2.11.2/jackson-annotations-2.11.2.jar:/Users/cdornin/.m2/repository/com/fasterxml/jackson/core/jackson-core/2.11.2/jackson-core-2.11.2.jar:/Users/cdornin/.m2/repository/com/fasterxml/jackson/core/jackson-databind/2.11.2/jackson-databind-2.11.2.jar com.amazonaws.transcribe.AmazonTranscribeServiceImpl
log4j:WARN Continuable parsing error 2 and column 30
log4j:WARN Document root element "Configuration", must match DOCTYPE root "null".
log4j:WARN Continuable parsing error 2 and column 30
log4j:WARN Document is invalid: no grammar found.
log4j:ERROR DOM element is - not a <log4j:configuration> element.
log4j:WARN No appenders could be found for logger (com.amazonaws.AmazonWebServiceClient).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Exception in thread "main" com.amazonaws.services.transcribe.model.AmazonTranscribeException: null (Service: AmazonTranscribe; Status Code: 400; Error Code: null; Request ID: 6BBE51FDC2CA981B; Proxy: null)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1819)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleServiceErrorResponse(AmazonHttpClient.java:1403)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1372)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1145)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:802)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:770)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:744)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access0(AmazonHttpClient.java:704)
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:686)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:550)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:530)
at com.amazonaws.services.transcribe.AmazonTranscribeClient.doInvoke(AmazonTranscribeClient.java:1995)
at com.amazonaws.services.transcribe.AmazonTranscribeClient.invoke(AmazonTranscribeClient.java:1962)
at com.amazonaws.services.transcribe.AmazonTranscribeClient.invoke(AmazonTranscribeClient.java:1951)
at com.amazonaws.services.transcribe.AmazonTranscribeClient.executeStartTranscriptionJob(AmazonTranscribeClient.java:1712)
at com.amazonaws.services.transcribe.AmazonTranscribeClient.startTranscriptionJob(AmazonTranscribeClient.java:1681)
at com.amazonaws.transcribe.AmazonTranscribeServiceImpl.callTranscribeService(AmazonTranscribeServiceImpl.java:34)
at com.amazonaws.transcribe.AmazonTranscribeServiceImpl.main(AmazonTranscribeServiceImpl.java:20)
这是我的 java 代码（添加您的 aws 密钥和密码）
package com.amazonaws.transcribe;
import com.amazonaws.ClientConfiguration;
import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
import com.amazonaws.client.builder.AwsClientBuilder;
import com.amazonaws.services.transcribe.AmazonTranscribe;
import com.amazonaws.services.transcribe.AmazonTranscribeClientBuilder;
import com.amazonaws.services.transcribe.model.Media;
import com.amazonaws.services.transcribe.model.StartTranscriptionJobRequest;
import com.amazonaws.services.transcribe.model.StartTranscriptionJobResult;
/**
* @author ravindu.s
*/
public class AmazonTranscribeServiceImpl {
public static void main(String[] args) throws Exception {
System.setProperty("aws.accessKeyId", "myKey");
System.setProperty("aws.secretAccessKey", "mySecret");
callTranscribeService("https://s3.us-east-1.amazonaws.com/csld8xmsdksdf8s9sk3mmdjsdifkjksdijsldk/Transcribe2.wav");
}
public static void callTranscribeService(String mediaFile) {
ClientConfiguration clientConfig = new ClientConfiguration();
clientConfig.setConnectionTimeout(60000);
clientConfig.setMaxConnections(100);
clientConfig.setSocketTimeout(60000);
AmazonTranscribe transcribeClient = AmazonTranscribeClientBuilder.standard().withCredentials(
DefaultAWSCredentialsProviderChain.getInstance()).withEndpointConfiguration(
new AwsClientBuilder.EndpointConfiguration(mediaFile, "us-east-1")).withClientConfiguration(clientConfig).build();
StartTranscriptionJobRequest request = buildRequest(mediaFile);
StartTranscriptionJobResult response = transcribeClient.startTranscriptionJob(request);
System.out.println(response.getTranscriptionJob().getTranscriptionJobStatus());
}
private static StartTranscriptionJobRequest buildRequest(String mediaFile) {
StartTranscriptionJobRequest request = new StartTranscriptionJobRequest();
request.setMediaSampleRateHertz(16000);
request.setMediaFormat("wav");
request.setLanguageCode("en-US");
request.setTranscriptionJobName("JOB-001");
Media media = new Media();
media.setMediaFileUri(mediaFile);
request.setMedia(media);
return request;
}
}
这是我的 pom.xml 文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>play</groupId>
<artifactId>transcribeTest</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>8</source>
<target>8</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<!--<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>5.4.2</version>
<scope>test</scope>
</dependency>-->
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>5.4.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-commons</artifactId>
<version>1.4.0</version>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-launcher</artifactId>
<version>1.4.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.25</version>
</dependency>
<dependency>
<groupId>software.amazon.awssdk</groupId>
<artifactId>transcribe</artifactId>
<version>2.15.65</version>
</dependency>
<!-- https://mvnrepository.com/artifact/software.amazon.awssdk/transcribestreaming -->
<dependency>
<groupId>software.amazon.awssdk</groupId>
<artifactId>transcribestreaming</artifactId>
<version>2.15.65</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.amazonaws/aws-java-sdk-s3 -->
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-s3</artifactId>
<version>1.11.939</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.amazonaws/aws-java-sdk-transcribe -->
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-transcribe</artifactId>
<version>1.11.939</version>
</dependency>
<dependency>
<groupId>io.minio</groupId>
<artifactId>minio</artifactId>
<version>8.0.3</version>
</dependency>
</dependencies>
</project>
这是一个 Java 代码示例，用于转录位于 C: 中的音频文件。这是V2.
import org.reactivestreams.Publisher;
import org.reactivestreams.Subscriber;
import org.reactivestreams.Subscription;
import software.amazon.awssdk.core.SdkBytes;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.transcribestreaming.TranscribeStreamingAsyncClient;
import software.amazon.awssdk.services.transcribestreaming.model.*;
import javax.sound.sampled.*;
import java.io.*;
import java.net.URISyntaxException;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicLong;
public class TranscribeStreamingDemoFile {
private static final Region REGION = Region.US_EAST_1;
private static TranscribeStreamingAsyncClient client;
public static void main(String args[]) throws URISyntaxException, ExecutionException, InterruptedException, LineUnavailableException {
client = TranscribeStreamingAsyncClient.builder()
.region(REGION)
.build();
CompletableFuture<Void> result = client.startStreamTranscription(getRequest(16000),
new AudioStreamPublisher(getStreamFromFile()),
getResponseHandler());
result.get();
client.close();
}
private static InputStream getStreamFromFile() {
try {
File inputFile = new File("C:\test.wav");
InputStream audioStream = new FileInputStream(inputFile);
return audioStream;
} catch (FileNotFoundException e) {
throw new RuntimeException(e);
}
}
private static StartStreamTranscriptionRequest getRequest(Integer mediaSampleRateHertz) {
return StartStreamTranscriptionRequest.builder()
.languageCode(LanguageCode.EN_US)
.mediaEncoding(MediaEncoding.PCM)
.mediaSampleRateHertz(mediaSampleRateHertz)
.build();
}
private static StartStreamTranscriptionResponseHandler getResponseHandler() {
return StartStreamTranscriptionResponseHandler.builder()
.onResponse(r -> {
System.out.println("Received Initial response");
})
.onError(e -> {
System.out.println(e.getMessage());
StringWriter sw = new StringWriter();
e.printStackTrace(new PrintWriter(sw));
System.out.println("Error Occurred: " + sw.toString());
})
.onComplete(() -> {
System.out.println("=== All records stream successfully ===");
})
.subscriber(event -> {
List<Result> results = ((TranscriptEvent) event).transcript().results();
if (results.size() > 0) {
if (!results.get(0).alternatives().get(0).transcript().isEmpty()) {
System.out.println(results.get(0).alternatives().get(0).transcript());
}
}
})
.build();
}
private static class AudioStreamPublisher implements Publisher<AudioStream> {
private final InputStream inputStream;
private static Subscription currentSubscription;
private AudioStreamPublisher(InputStream inputStream) {
this.inputStream = inputStream;
}
@Override
public void subscribe(Subscriber<? super AudioStream> s) {
if (this.currentSubscription == null) {
this.currentSubscription = new SubscriptionImpl(s, inputStream);
} else {
this.currentSubscription.cancel();
this.currentSubscription = new SubscriptionImpl(s, inputStream);
}
s.onSubscribe(currentSubscription);
}
}
public static class SubscriptionImpl implements Subscription {
private static final int CHUNK_SIZE_IN_BYTES = 1024 * 1;
private final Subscriber<? super AudioStream> subscriber;
private final InputStream inputStream;
private ExecutorService executor = Executors.newFixedThreadPool(1);
private AtomicLong demand = new AtomicLong(0);
SubscriptionImpl(Subscriber<? super AudioStream> s, InputStream inputStream) {
this.subscriber = s;
this.inputStream = inputStream;
}
@Override
public void request(long n) {
if (n <= 0) {
subscriber.onError(new IllegalArgumentException("Demand must be positive"));
}
demand.getAndAdd(n);
executor.submit(() -> {
try {
do {
ByteBuffer audioBuffer = getNextEvent();
if (audioBuffer.remaining() > 0) {
AudioEvent audioEvent = audioEventFromBuffer(audioBuffer);
subscriber.onNext(audioEvent);
} else {
subscriber.onComplete();
break;
}
} while (demand.decrementAndGet() > 0);
} catch (Exception e) {
subscriber.onError(e);
}
});
}
@Override
public void cancel() {
executor.shutdown();
}
private ByteBuffer getNextEvent() {
ByteBuffer audioBuffer = null;
byte[] audioBytes = new byte[CHUNK_SIZE_IN_BYTES];
int len = 0;
try {
len = inputStream.read(audioBytes);
if (len <= 0) {
audioBuffer = ByteBuffer.allocate(0);
} else {
audioBuffer = ByteBuffer.wrap(audioBytes, 0, len);
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
return audioBuffer;
}
private AudioEvent audioEventFromBuffer(ByteBuffer bb) {
return AudioEvent.builder()
.audioChunk(SdkBytes.fromByteBuffer(bb))
.build();
}
}
}
我的代码有一个小错误。这条线不是必需的，当我删除时，它起作用了：
withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration(mediaFile, "us-east-1"))