/** Pulls bitmap from diskcache */
private @Nullable ParcelFileDescriptor createPipe(final ArtInfo artInfo) {
final byte[] bytes = mL2Cache.getBytes(artInfo.cacheKey());
if (bytes == null) {
return null;
}
try {
final ParcelFileDescriptor[] pipe = ParcelFileDescriptor.createPipe();
final OutputStream out = new ParcelFileDescriptor.AutoCloseOutputStream(pipe[1]);
final ParcelFileDescriptor in = pipe[0];
final Scheduler.Worker worker = mScheduler.createWorker();
worker.schedule(
new Action0() {
@Override
public void call() {
try {
IOUtils.write(bytes, out);
out.flush();
} catch (IOException e) {
Timber.w("createPipe(e=%s) for %s", e.getMessage(), artInfo);
} finally {
IOUtils.closeQuietly(out);
worker.unsubscribe();
}
}
});
return in;
} catch (IOException e) {
Timber.e(e, "createPipe() for %s", artInfo);
return null;
}
}
@Override
@DebugLog
public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException {
if (!"r".equals(mode)) {
throw new FileNotFoundException("Provider is read only");
}
switch (mUriMatcher.match(uri)) {
case ArtworkUris.MATCH.ARTINFO:
{
final ArtInfo artInfo = ArtInfo.fromUri(uri);
final ParcelFileDescriptor pfd = getArtwork(artInfo);
if (pfd != null) {
return pfd;
}
break;
}
}
throw new FileNotFoundException("Could not obtain image from cache or network");
}