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Throw correct exception.

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Oliver Woodman 2015-11-25 16:48:45 +00:00
parent 042bd2ff82
commit 4fbe4fc7d5
1 changed files with 37 additions and 37 deletions
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74
library/src/main/java/com/google/android/exoplayer/upstream/cache/CacheDataSource.java vendored
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@ -27,6 +27,7 @@ import android.net.Uri;
import android.util.Log;
import java.io.IOException;
import java.io.InterruptedIOException;
/**
* A {@link DataSource} that reads and writes a {@link Cache}. Requests are fulfilled from the cache
@ -182,46 +183,45 @@ public final class CacheDataSource implements DataSource {
* opened to read from the upstream source and write into the cache.
*/
private void openNextSource() throws IOException {
try {
DataSpec dataSpec;
CacheSpan span;
if (ignoreCache) {
span = null;
} else if (bytesRemaining == C.LENGTH_UNBOUNDED) {
// TODO: Support caching for unbounded requests. This requires storing the source length
// into the cache (the simplest approach is to incorporate it into each cache file's name).
Log.w(TAG, "Cache bypassed due to unbounded length.");
span = null;
} else if (blockOnCache) {
DataSpec dataSpec;
CacheSpan span;
if (ignoreCache) {
span = null;
} else if (bytesRemaining == C.LENGTH_UNBOUNDED) {
// TODO: Support caching for unbounded requests. This requires storing the source length
// into the cache (the simplest approach is to incorporate it into each cache file's name).
Log.w(TAG, "Cache bypassed due to unbounded length.");
span = null;
} else if (blockOnCache) {
try {
span = cache.startReadWrite(key, readPosition);
} else {
span = cache.startReadWriteNonBlocking(key, readPosition);
} catch (InterruptedException e) {
throw new InterruptedIOException();
}
if (span == null) {
// The data is locked in the cache, or we're ignoring the cache. Bypass the cache and read
// from upstream.
currentDataSource = upstreamDataSource;
dataSpec = new DataSpec(uri, readPosition, bytesRemaining, key, flags);
} else if (span.isCached) {
// Data is cached, read from cache.
Uri fileUri = Uri.fromFile(span.file);
long filePosition = readPosition - span.position;
long length = Math.min(span.length - filePosition, bytesRemaining);
dataSpec = new DataSpec(fileUri, readPosition, filePosition, length, key, flags);
currentDataSource = cacheReadDataSource;
} else {
// Data is not cached, and data is not locked, read from upstream with cache backing.
lockedSpan = span;
long length = span.isOpenEnded() ? bytesRemaining : Math.min(span.length, bytesRemaining);
dataSpec = new DataSpec(uri, readPosition, length, key, flags);
currentDataSource = cacheWriteDataSource != null ? cacheWriteDataSource
: upstreamDataSource;
}
currentDataSource.open(dataSpec);
} catch (InterruptedException e) {
// Should never happen.
throw new RuntimeException(e);
} else {
span = cache.startReadWriteNonBlocking(key, readPosition);
}
if (span == null) {
// The data is locked in the cache, or we're ignoring the cache. Bypass the cache and read
// from upstream.
currentDataSource = upstreamDataSource;
dataSpec = new DataSpec(uri, readPosition, bytesRemaining, key, flags);
} else if (span.isCached) {
// Data is cached, read from cache.
Uri fileUri = Uri.fromFile(span.file);
long filePosition = readPosition - span.position;
long length = Math.min(span.length - filePosition, bytesRemaining);
dataSpec = new DataSpec(fileUri, readPosition, filePosition, length, key, flags);
currentDataSource = cacheReadDataSource;
} else {
// Data is not cached, and data is not locked, read from upstream with cache backing.
lockedSpan = span;
long length = span.isOpenEnded() ? bytesRemaining : Math.min(span.length, bytesRemaining);
dataSpec = new DataSpec(uri, readPosition, length, key, flags);
currentDataSource = cacheWriteDataSource != null ? cacheWriteDataSource
: upstreamDataSource;
}
currentDataSource.open(dataSpec);
}
private void closeCurrentSource() throws IOException {