Swizzling, except for premultiplying, done using libpng transforms

src/core/SkMallocPixelRef.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkMallocPixelRef.h"
 #include "SkBitmap.h"
 #include "SkReadBuffer.h"
@@ skipping 35 matching lines @@
     }
     return SkNEW_ARGS(SkMallocPixelRef,
                       (info, addr, rowBytes, ctable, NULL, NULL));
 }
 
 
 SkMallocPixelRef* SkMallocPixelRef::NewAllocate(const SkImageInfo& info,
                                                 size_t requestedRowBytes,
                                                 SkColorTable* ctable) {
     if (!is_valid(info, ctable)) {
+        SkDebugf("failing 1\n");

[scroggo, 2015/06/30 20:50:04]

I think you didn't mean to include the changes to SkMallocPixelRef?

         return NULL;
     }
 
     // only want to permit 31bits of rowBytes
     int64_t minRB = (int64_t)info.minRowBytes64();
     if (minRB < 0 || !sk_64_isS32(minRB)) {
+        SkDebugf("failing 2\n");
         return NULL;    // allocation will be too large
     }
     if (requestedRowBytes > 0 && (int32_t)requestedRowBytes < minRB) {
+        SkDebugf("failing 3\n");
         return NULL;    // cannot meet requested rowbytes
     }
 
     int32_t rowBytes;
     if (requestedRowBytes) {
         rowBytes = SkToS32(requestedRowBytes);
     } else {
         rowBytes = minRB;
     }
 
     int64_t bigSize = (int64_t)info.height() * rowBytes;
     if (!sk_64_isS32(bigSize)) {
+        SkDebugf("failing 4\n");
         return NULL;
     }
 
     size_t size = sk_64_asS32(bigSize);
     SkASSERT(size >= info.getSafeSize(rowBytes));
     void* addr = sk_malloc_flags(size, 0);
     if (NULL == addr) {
+        SkDebugf("failing 5\n");
         return NULL;
     }
 
     return SkNEW_ARGS(SkMallocPixelRef,
                       (info, addr, rowBytes, ctable,
                        sk_free_releaseproc, NULL));
 }
 
 SkMallocPixelRef* SkMallocPixelRef::NewWithProc(const SkImageInfo& info,
                                                 size_t rowBytes,
@@ skipping 105 matching lines @@
 size_t SkMallocPixelRef::getAllocatedSizeInBytes() const {
     return this->info().getSafeSize(fRB);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 SkPixelRef* SkMallocPixelRef::PRFactory::create(const SkImageInfo& info, size_t rowBytes,
                                                 SkColorTable* ctable) {
     return SkMallocPixelRef::NewAllocate(info, rowBytes, ctable);
 }