Support the non-native (RGBA/BGRA) swizzle

src/codec/SkSampler.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCodec.h"
 #include "SkCodecPriv.h"
 #include "SkSampler.h"
 #include "SkUtils.h"
 
 void SkSampler::Fill(const SkImageInfo& info, void* dst, size_t rowBytes,
         uint32_t colorOrIndex, SkCodec::ZeroInitialized zeroInit) {
     SkASSERT(dst != nullptr);
 
     // Calculate bytes to fill.  We use getSafeSize since the last row may not be padded.
     const size_t bytesToFill = info.getSafeSize(rowBytes);
     const int width = info.width();
     const int numRows = info.height();
 
     // Use the proper memset routine to fill the remaining bytes
     switch (info.colorType()) {
-        case kN32_SkColorType: {
+        case kRGBA_8888_SkColorType:
+        case kBGRA_8888_SkColorType: {
             // If memory is zero initialized, we may not need to fill
             uint32_t color = colorOrIndex;
             if (SkCodec::kYes_ZeroInitialized == zeroInit && 0 == color) {
                 return;
             }
 
             // We must fill row by row in the case of unaligned row bytes
             if (SkIsAlign4((size_t) dst) && SkIsAlign4(rowBytes)) {
                 sk_memset32((uint32_t*) dst, color,
                         (uint32_t) bytesToFill / sizeof(SkPMColor));
@@ skipping 58 matching lines @@
             }
 
             memset(dst, (uint8_t) colorOrIndex, bytesToFill);
             break;
         default:
             SkCodecPrintf("Error: Unsupported dst color type for fill().  Doing nothing.\n");
             SkASSERT(false);
             break;
     }
 }