Scanline decoding for wbmp

src/codec/SkSwizzler.h

Index: src/codec/SkSwizzler.h
diff --git a/src/codec/SkSwizzler.h b/src/codec/SkSwizzler.h
index 76ca74877a391c9670ef8f71d68a8ed8ad131e52..d5981187b75273173732f0de107737f6c960f878 100644
--- a/src/codec/SkSwizzler.h
+++ b/src/codec/SkSwizzler.h
@@ -19,6 +19,7 @@ public:
      */
     enum SrcConfig {
         kUnknown,  // Invalid type.
+        kBit,

[scroggo, 2015/07/29 17:47:12]

Should there be a comment explaining what kBit means? Maybe it's obvious? (A bit
could be used to distinguish between opaque and transparent, which could
actually map to the same values, so maybe that's okay? And it could also map to
any arbitrary colors, but I suppose that would be kIndex1...)

[msarett, 2015/07/29 18:53:57]

Adding a description.

         kGray,
         kIndex1,
         kIndex2,
@@ -76,6 +77,7 @@ public:
      */
     static int BitsPerPixel(SrcConfig sc) {
         switch (sc) {
+            case kBit:
             case kIndex1:
                 return 1;
             case kIndex2: