SkScaledCodec class

src/codec/SkCodec_libbmp.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_libbmp.h"
 #include "SkCodecPriv.h"
 #include "SkColorPriv.h"
@@ skipping 1116 matching lines @@
         default:
             SkASSERT(false);
             return kInvalidInput;
     }
 
     // Get a pointer to the color table if it exists
     const SkPMColor* colorPtr = NULL != fColorTable.get() ? fColorTable->readColors() : NULL;
 
     // Create swizzler
     SkAutoTDelete<SkSwizzler> swizzler(SkSwizzler::CreateSwizzler(config,
-            colorPtr, dstInfo, dst, dstRowBytes, kNo_ZeroInitialized));
+            colorPtr, dstInfo, dst, dstRowBytes, kNo_ZeroInitialized, opts.fSampleX));

[scroggo, 2015/07/28 15:58:10]

If we're going to pass zeroInitialized (which is a field on options) and sampleX
(also a field on options), it seems like it would make more sense to just pass
the Options object.

 
     // Allocate space for a row buffer and a source for the swizzler
     SkAutoTDeleteArray<uint8_t> srcBuffer(SkNEW_ARRAY(uint8_t, rowBytes));
 
     // Iterate over rows of the image
     // FIXME: bool transparent = true;
     for (int y = 0; y < height; y++) {
         // Read a row of the input
         if (stream()->read(srcBuffer.get(), rowBytes) != rowBytes) {
             SkCodecPrintf("Warning: incomplete input stream.\n");
@@ skipping 77 matching lines @@
                 uint32_t alphaBit =
                         (srcBuffer.get()[quotient] >> shift) & 0x1;
                 dstRow[x] &= alphaBit - 1;
             }
         }
     }
 
     // Finished decoding the entire image
     return kSuccess;
 }