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..b70a51786d6ff8531781cceb2194d49e42fc43d9 100644
--- a/src/codec/SkSwizzler.h
+++ b/src/codec/SkSwizzler.h
@@ -122,12 +122,13 @@ public:
      *  @param ZeroInitialized Whether dst is zero-initialized. The
                                implementation may choose to skip writing zeroes
      *                         if set to kYes_ZeroInitialized.
+     *  @param sampleX the step between samples in the x direction.
      *  @return A new SkSwizzler or NULL on failure.
      */
     static SkSwizzler* CreateSwizzler(SrcConfig, const SkPMColor* ctable,
                                       const SkImageInfo&, void* dst,
                                       size_t dstRowBytes,
-                                      SkCodec::ZeroInitialized);
+                                      SkCodec::ZeroInitialized, int sampleX);
 
     /**
      * Fill the remainder of the destination with a single color
@@ -245,9 +246,11 @@ private:
     void*               fDstRow;
     const size_t        fDstRowBytes;
     int                 fCurrY;
+    const int           fX0;              // first X coord to sample
+    const int           fSampleX;         // step between X samples
 
     SkSwizzler(RowProc proc, const SkPMColor* ctable, int deltaSrc,
-               const SkImageInfo& info, void* dst, size_t rowBytes);
+               const SkImageInfo& info, void* dst, size_t rowBytes, int sampleX);
 
 };
 #endif // SkSwizzler_DEFINED