Implementing filling for SkBmpCodec

src/codec/SkSwizzler.h

Index: src/codec/SkSwizzler.h
diff --git a/src/codec/SkSwizzler.h b/src/codec/SkSwizzler.h
index 6044c869d2362224960e3cad72e7a88f83f792a9..00aeb7a3793ba87e7d8ab9adfec77ff1afa391e0 100644
--- a/src/codec/SkSwizzler.h
+++ b/src/codec/SkSwizzler.h
@@ -154,9 +154,13 @@ public:
      *
      * Other SkColorTypes are not supported.
      *
+     * @param bottomUp
+     * If true, this indicates that stream contains rows of the image starting from the
+     * bottom.  The rows that need to be filled will be the top rows.
+     *
      */
     static void Fill(void* dst, const SkImageInfo& dstInfo, size_t dstRowBytes, uint32_t y,
-            uint32_t colorOrIndex, SkPMColor* colorTable);
+            uint32_t colorOrIndex, const SkPMColor* colorTable, bool bottomUp = false);

[scroggo, 2015/04/10 18:12:43]

I think it would be better to use RowOrder (which may need to move somewhere
common).

[msarett, 2015/04/10 20:52:56]

A new design will take care of this.  We will now pass in the dstStartRow and
the number of rows to fill.

 
     /**
      *  Swizzle the next line. Call height times, once for each row of source.