Provides multiple implementations of Android's SkBitmapRegionDecoder

dm/DMSrcSink.h

Index: dm/DMSrcSink.h
diff --git a/dm/DMSrcSink.h b/dm/DMSrcSink.h
index 82a07258a8d785ac3e821e5568f4b55eec0d8581..20bc8450880ce8abe4899356bb4e68da7bd3b661 100644
--- a/dm/DMSrcSink.h
+++ b/dm/DMSrcSink.h
@@ -12,6 +12,7 @@
 #include "SkBBHFactory.h"
 #include "SkBBoxHierarchy.h"
 #include "SkBitmap.h"
+#include "SkBitmapRegionDecoder.h"
 #include "SkCanvas.h"
 #include "SkData.h"
 #include "SkGPipe.h"
@@ -99,6 +100,28 @@ 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 {