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Fix RawResourceDataSource remaining length

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-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=133120449
This commit is contained in:
olly 2016-09-14 06:29:47 -07:00 committed by Oliver Woodman
parent e4cc2d6acd
commit bf0d398ba8
1 changed files with 15 additions and 13 deletions
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28
library/src/main/java/com/google/android/exoplayer2/upstream/RawResourceDataSource.java
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@ -20,7 +20,6 @@ import android.content.res.AssetFileDescriptor;
import android.content.res.Resources;
import android.net.Uri;
import android.text.TextUtils;
import com.google.android.exoplayer2.C;
import java.io.EOFException;
import java.io.FileInputStream;
@ -30,8 +29,9 @@ import java.io.InputStream;
/**
* A {@link DataSource} for reading a raw resource inside the APK.
* <p>
* URIs supported by this source are of the form {@code rawresource:///resourceId}, where resourceId
* is the integer identifier of a raw resource.
* URIs supported by this source are of the form {@code rawresource:///rawResourceId}, where
* rawResourceId is the integer identifier of a raw resource. {@link #buildRawResourceUri(int)} can
* be used to build {@link Uri}s in this format.
*/
public final class RawResourceDataSource implements DataSource {
@ -49,9 +49,14 @@ public final class RawResourceDataSource implements DataSource {
}
/**
* The URI scheme used to identify raw resources. URIs used with this class must use this scheme.
* Builds a {@link Uri} for the specified raw resource identifier.
*
* @param rawResourceId A raw resource identifier (i.e. a constant defined in {@code R.raw}).
* @return The corresponding {@link Uri}.
*/
public static final String RAW_RESOURCE_SCHEME = "rawresource";
public static final Uri buildRawResourceUri(int rawResourceId) {
return Uri.parse("rawresource:///" + rawResourceId);
}
private final Resources resources;
private final TransferListener<? super RawResourceDataSource> listener;
@ -106,13 +111,10 @@ public final class RawResourceDataSource implements DataSource {
if (dataSpec.length != C.LENGTH_UNSET) {
bytesRemaining = dataSpec.length;
} else {
bytesRemaining = inputStream.available();
if (bytesRemaining == 0) {
// FileInputStream.available() returns 0 if the remaining length cannot be determined, or
// if it's greater than Integer.MAX_VALUE. We don't know the true length in either case,
// so treat as unbounded.
bytesRemaining = C.LENGTH_UNSET;
}
long assetFileDescriptorLength = assetFileDescriptor.getLength();
// If the length is UNKNOWN_LENGTH then the asset extends to the end of the file.
bytesRemaining = assetFileDescriptorLength == AssetFileDescriptor.UNKNOWN_LENGTH
? C.LENGTH_UNSET : (assetFileDescriptorLength - dataSpec.position);
}
} catch (IOException e) {
throw new RawResourceDataSourceException(e);
@ -174,7 +176,7 @@ public final class RawResourceDataSource implements DataSource {
assetFileDescriptor.close();
}
} catch (IOException e) {
throw new RawResourceDataSourceException(e);
throw new RawResourceDataSourceException(e);
} finally {
assetFileDescriptor = null;
if (opened) {