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/*
* Copyright (C) 2016 The Android Open Source Project
*
* 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.
*/
package org.mozilla.thirdparty.com.google.android.exoplayer2.upstream;
import static org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util.castNonNull;
import androidx.annotation.Nullable;
import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
/**
* A {@link DataSink} for writing to a byte array.
*/
public final class ByteArrayDataSink implements DataSink {
private @MonotonicNonNull ByteArrayOutputStream stream;
@Override
public void open(DataSpec dataSpec) {
if (dataSpec.length == C.LENGTH_UNSET) {
stream = new ByteArrayOutputStream();
} else {
Assertions.checkArgument(dataSpec.length <= Integer.MAX_VALUE);
stream = new ByteArrayOutputStream((int) dataSpec.length);
}
}
@Override
public void close() throws IOException {
castNonNull(stream).close();
}
@Override
public void write(byte[] buffer, int offset, int length) {
castNonNull(stream).write(buffer, offset, length);
}
/**
* Returns the data written to the sink since the last call to {@link #open(DataSpec)}, or null if
* {@link #open(DataSpec)} has never been called.
*/
@Nullable
public byte[] getData() {
return stream == null ? null : stream.toByteArray();
}
}
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