diff --git a/src/com/android/gallery3d/exif/TiffInputStream.java b/src/com/android/gallery3d/exif/CountedDataInputStream.java
similarity index 91%
rename from src/com/android/gallery3d/exif/TiffInputStream.java
rename to src/com/android/gallery3d/exif/CountedDataInputStream.java
index 2b0054c..dfd4a1a 100644
--- a/src/com/android/gallery3d/exif/TiffInputStream.java
+++ b/src/com/android/gallery3d/exif/CountedDataInputStream.java
@@ -24,7 +24,7 @@
 import java.nio.ByteOrder;
 import java.nio.charset.Charset;
 
-class TiffInputStream extends FilterInputStream {
+class CountedDataInputStream extends FilterInputStream {
 
     private int mCount = 0;
 
@@ -32,7 +32,7 @@
     private final byte mByteArray[] = new byte[8];
     private final ByteBuffer mByteBuffer = ByteBuffer.wrap(mByteArray);
 
-    protected TiffInputStream(InputStream in) {
+    protected CountedDataInputStream(InputStream in) {
         super(in);
     }
 
@@ -42,26 +42,28 @@
 
     @Override
     public int read(byte[] b) throws IOException {
-        return read(b, 0, b.length);
+        int r = in.read(b);
+        mCount += (r >= 0) ? r : 0;
+        return r;
     }
 
     @Override
     public int read(byte[] b, int off, int len) throws IOException {
-        int r = super.read(b, off, len);
+        int r = in.read(b, off, len);
         mCount += (r >= 0) ? r : 0;
         return r;
     }
 
     @Override
     public int read() throws IOException {
-        int r = super.read();
+        int r = in.read();
         mCount += (r >= 0) ? 1 : 0;
         return r;
     }
 
     @Override
     public long skip(long length) throws IOException {
-        long skip = super.skip(length);
+        long skip = in.skip(length);
         mCount += skip;
         return skip;
     }
diff --git a/src/com/android/gallery3d/exif/ExifParser.java b/src/com/android/gallery3d/exif/ExifParser.java
index 4249a72..bd8a97d 100644
--- a/src/com/android/gallery3d/exif/ExifParser.java
+++ b/src/com/android/gallery3d/exif/ExifParser.java
@@ -137,7 +137,7 @@
     private static final int TAG_SIZE = 12;
     private static final int OFFSET_SIZE = 2;
 
-    private final TiffInputStream mTiffStream;
+    private final CountedDataInputStream mTiffStream;
     private final int mOptions;
     private int mIfdStartOffset = 0;
     private int mNumOfTagInIfd = 0;
@@ -174,7 +174,7 @@
     private ExifParser(InputStream inputStream, int options)
             throws IOException, ExifInvalidFormatException {
         seekTiffData(inputStream);
-        mTiffStream = new TiffInputStream(inputStream);
+        mTiffStream = new CountedDataInputStream(inputStream);
         mOptions = options;
         if (mTiffStream.getReadByteCount() == 0) {
             parseTiffHeader();