Scanline decoding for wbmp

src/codec/SkSwizzler.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkSwizzler_DEFINED
 #define SkSwizzler_DEFINED
 
 #include "SkCodec.h"
 #include "SkColor.h"
 #include "SkImageInfo.h"
 
 class SkSwizzler : public SkNoncopyable {
 public:
     /**
      *  Enum describing the config of the source data.
      */
     enum SrcConfig {
         kUnknown,  // Invalid type.
+        kBit,      // A single bit to distinguish between white and black
         kGray,
         kIndex1,
         kIndex2,
         kIndex4,
         kIndex,
         kRGB,
         kBGR,
         kRGBX,
         kBGRX,
         kRGBA,
@@ skipping 37 matching lines @@
      */
     static ResultAlpha GetResult(uint8_t zeroAlpha, uint8_t maxAlpha);
 
     /*
      *
      * Returns bits per pixel for source config
      *
      */
     static int BitsPerPixel(SrcConfig sc) {
         switch (sc) {
+            case kBit:
             case kIndex1:
                 return 1;
             case kIndex2:
                 return 2;
             case kIndex4:
                 return 4;
             case kGray:
             case kIndex:
                 return 8;
             case kRGB_565:
@@ skipping 107 matching lines @@
                                           // else
                                           //     deltaSrc is bitsPerPixel
     const SkImageInfo   fDstInfo;
     int                 fCurrY;
 
     SkSwizzler(RowProc proc, const SkPMColor* ctable, int deltaSrc,
                const SkImageInfo& info);
 
 };
 #endif // SkSwizzler_DEFINED