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author | George Mount <mount@google.com> | 2012-10-11 09:51:32 -0700 |
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committer | George Mount <mount@google.com> | 2012-10-11 10:05:08 -0700 |
commit | 1c35ad56a274a8c1b6a60197855c0b838c4e1022 (patch) | |
tree | 141387dd2d4276a722d9c975b5fabe08df8bc636 /gallerycommon | |
parent | 2cb4269ebc665c2f2786a8a81794d15b36e3a38c (diff) | |
download | android_packages_apps_Gallery2-1c35ad56a274a8c1b6a60197855c0b838c4e1022.tar.gz android_packages_apps_Gallery2-1c35ad56a274a8c1b6a60197855c0b838c4e1022.tar.bz2 android_packages_apps_Gallery2-1c35ad56a274a8c1b6a60197855c0b838c4e1022.zip |
Clear cached stitching preview thumbnails.
Bug 7328408
Change-Id: Ifbc469dc9eef95025cd8e828a0df80e76d2ff064
Diffstat (limited to 'gallerycommon')
-rw-r--r-- | gallerycommon/src/com/android/gallery3d/common/BlobCache.java | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gallerycommon/src/com/android/gallery3d/common/BlobCache.java b/gallerycommon/src/com/android/gallery3d/common/BlobCache.java index 7788e61f5..3c131e591 100644 --- a/gallerycommon/src/com/android/gallery3d/common/BlobCache.java +++ b/gallerycommon/src/com/android/gallery3d/common/BlobCache.java @@ -74,6 +74,7 @@ import java.io.RandomAccessFile; import java.nio.ByteOrder; import java.nio.MappedByteBuffer; import java.nio.channels.FileChannel; +import java.util.Arrays; import java.util.zip.Adler32; public class BlobCache implements Closeable { @@ -379,6 +380,16 @@ public class BlobCache implements Closeable { updateIndexHeader(); } + public void clearEntry(long key) throws IOException { + if (!lookupInternal(key, mActiveHashStart)) { + return; // Nothing to clear + } + byte[] header = mBlobHeader; + Arrays.fill(header, (byte) 0); + mActiveDataFile.seek(mFileOffset); + mActiveDataFile.write(header); + } + // Appends the data to the active file. It also updates the hash entry. // The proper hash entry (suitable for insertion or replacement) must be // pointed by mSlotOffset. @@ -485,6 +496,9 @@ public class BlobCache implements Closeable { return false; } long blobKey = readLong(header, BH_KEY); + if (blobKey == 0) { + return false; // This entry has been cleared. + } if (blobKey != req.key) { Log.w(TAG, "blob key does not match: " + blobKey); return false; |