Provides multiple implementations of Android's SkBitmapRegionDecoder

dm/DMSrcSink.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 DMSrcSink_DEFINED
 #define DMSrcSink_DEFINED
 
 #include "DMGpuSupport.h"
 #include "SkBBHFactory.h"
 #include "SkBBoxHierarchy.h"
 #include "SkBitmap.h"
+#include "SkBitmapRegionDecoder.h"
 #include "SkCanvas.h"
 #include "SkData.h"
 #include "SkGPipe.h"
 #include "SkPicture.h"
 #include "gm.h"
 
 namespace DM {
 
 // This is just convenience.  It lets you use either return "foo" or return SkStringPrintf(...).
 struct ImplicitString : public SkString {
@@ skipping 67 matching lines @@
 
     Error draw(SkCanvas*) const override;
     SkISize size() const override;
     Name name() const override;
     void modifyGrContextOptions(GrContextOptions* options) const override;
 
 private:
     skiagm::GMRegistry::Factory fFactory;
 };
 
+// Allows for testing of various implementations of Android's BitmapRegionDecoder
+class BRDSrc : public Src {
+public:
+    enum Mode {
+        kFullImage_Mode,

[scroggo, 2015/09/01 22:05:28]

Maybe add some comments explaining what these mean?

[msarett, 2015/09/02 18:02:23]

Yes that would be helpful.  Done.

+        kDivisor_Mode,
+    };
+
+    BRDSrc(Path, SkBitmapRegionDecoder::Strategy, Mode, SkColorType, uint32_t);
+
+    Error draw(SkCanvas*) const override;
+    SkISize size() const override;
+    Name name() const override;
+    bool veto(SinkFlags) const override;
+private:
+    Path                            fPath;
+    SkBitmapRegionDecoder::Strategy fStrategy;
+    Mode                            fMode;
+    SkColorType                     fColorType;
+    uint32_t                        fSampleSize;
+};
+
 class CodecSrc : public Src {
 public:
     enum Mode {
         kNormal_Mode,
         kScanline_Mode,
         kScanline_Subset_Mode,
         kStripe_Mode, // Tests the skipping of scanlines
         kSubset_Mode, // For codecs that support subsets directly.
     };
     enum DstColorType {
@@ skipping 196 matching lines @@
 
 class ViaTwice : public Via {
 public:
     explicit ViaTwice(Sink* sink) : Via(sink) {}
     Error draw(const Src&, SkBitmap*, SkWStream*, SkString*) const override;
 };
 
 }  // namespace DM
 
 #endif//DMSrcSink_DEFINED