86 lines
2.1 KiB
Java
86 lines
2.1 KiB
Java
package org.thoughtcrime.securesms.video.exo;
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import android.content.Context;
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import android.net.Uri;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import com.google.android.exoplayer2.upstream.DataSource;
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import com.google.android.exoplayer2.upstream.DataSpec;
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import com.google.android.exoplayer2.upstream.TransferListener;
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import org.thoughtcrime.securesms.providers.BlobProvider;
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import java.io.EOFException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.Collections;
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import java.util.List;
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import java.util.Map;
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public class BlobDataSource implements DataSource {
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private final @NonNull Context context;
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private final @Nullable TransferListener listener;
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private Uri uri;
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private InputStream inputStream;
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BlobDataSource(@NonNull Context context, @Nullable TransferListener listener) {
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this.context = context.getApplicationContext();
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this.listener = listener;
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}
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@Override
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public void addTransferListener(TransferListener transferListener) {
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}
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@Override
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public long open(DataSpec dataSpec) throws IOException {
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this.uri = dataSpec.uri;
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this.inputStream = BlobProvider.getInstance().getStream(context, uri, dataSpec.position);
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if (listener != null) {
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listener.onTransferStart(this, dataSpec, false);
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}
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long size = unwrapLong(BlobProvider.getFileSize(uri));
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if (size - dataSpec.position <= 0) throw new EOFException("No more data");
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return size - dataSpec.position;
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}
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private long unwrapLong(@Nullable Long boxed) {
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return boxed == null ? 0L : boxed;
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}
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@Override
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public int read(byte[] buffer, int offset, int readLength) throws IOException {
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int read = inputStream.read(buffer, offset, readLength);
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if (read > 0 && listener != null) {
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listener.onBytesTransferred(this, null, false, read);
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}
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return read;
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}
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@Override
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public Uri getUri() {
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return uri;
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}
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@Override
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public Map<String, List<String>> getResponseHeaders() {
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return Collections.emptyMap();
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}
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@Override
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public void close() throws IOException {
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inputStream.close();
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}
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}
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