Make SkSwizzler::Fill() support 565

src/codec/SkJpegCodec.cpp

Index: src/codec/SkJpegCodec.cpp
diff --git a/src/codec/SkJpegCodec.cpp b/src/codec/SkJpegCodec.cpp
index 5acc0b396c54d34abb922f80687104b54f85990a..e5cc6e36b1a289cd1376a2c477c414edb9eebe95 100644
--- a/src/codec/SkJpegCodec.cpp
+++ b/src/codec/SkJpegCodec.cpp
@@ -354,6 +354,9 @@ SkCodec::Result SkJpegCodec::onGetPixels(const SkImageInfo& dstInfo,
             // the fill color for opaque images.  If the destination is kGray,
             // the low 8 bits of SK_ColorBLACK will be used.  Conveniently,
             // these are zeros, which is the representation for black in kGray.
+            // If the destination is kRGB_565, the low 16 bits of SK_ColorBLACK
+            // will be used.  Conveniently, these are zeros, which is the

[scroggo, 2015/07/29 17:15:14]

nit: if kYes_ZeroInitialized, we could skip this.

[msarett, 2015/07/29 17:29:39]

Done.

+            // representation for black in kRGB_565.
             SkSwizzler::Fill(dstRow, dstInfo, dstRowBytes, dstHeight - y, SK_ColorBLACK, NULL);
 
             // Prevent libjpeg from failing on incomplete decode