SkScaledCodec class

src/codec/SkSwizzler.h

Index: src/codec/SkSwizzler.h
diff --git a/src/codec/SkSwizzler.h b/src/codec/SkSwizzler.h
index b00ee14e0699189f9834ccc7624ef8ee8924c0f8..e4ed0a07f95277c84f8e0dafb0f1a6f6f786c80f 100644
--- a/src/codec/SkSwizzler.h
+++ b/src/codec/SkSwizzler.h
@@ -202,6 +202,11 @@ public:
         SkASSERT(kDesignateRow_NextMode != fNextMode);
         return fDstRow;
     }
+    /**
+     *  set the sample size in the x direction
+     *  only support down sampling, sampleX >= 1
+     */
+    void setSampleX(int sampleX);
 
 private:
 
@@ -245,6 +250,8 @@ private:
     void*               fDstRow;
     const size_t        fDstRowBytes;
     int                 fCurrY;
+    int                 fX0;              // first X coord to sample
+    int                 fSampleX;         // step between X samples
 
     SkSwizzler(RowProc proc, const SkPMColor* ctable, int deltaSrc,
                const SkImageInfo& info, void* dst, size_t rowBytes);