Optionally run RAW images serially

dm/DMSrcSink.h

Index: dm/DMSrcSink.h
diff --git a/dm/DMSrcSink.h b/dm/DMSrcSink.h
index 3a7d4ee516cfa7ccb87e9a0e9c7cfbe3c7d19634..b251762b9aadd0880e5e52e62e65fa045c24b6e9 100644
--- a/dm/DMSrcSink.h
+++ b/dm/DMSrcSink.h
@@ -20,6 +20,10 @@
 
 namespace DM {
 
+// Return the extension of the provided SkString. Returns a pointer into the SkString's
+// data, so its lifetime is the same as the SkString.
+const char* SkStringExtension(const SkString&);
+
 // This is just convenience.  It lets you use either return "foo" or return SkStringPrintf(...).
 struct ImplicitString : public SkString {
     template <typename T>
@@ -58,6 +62,14 @@ struct SinkFlags {
     enum { kDirect, kIndirect } approach;
 };
 
+enum { kAnyThread_Enclave,
+       kGPU_Enclave,
+#ifdef SK_CODEC_DECODES_RAW
+       kRAW_Enclave,
+#endif
+       kNumEnclaves,
+     };
+
 struct Src {
     // All Srcs must be thread safe.
     virtual ~Src() {}
@@ -66,6 +78,8 @@ struct Src {
     virtual Name name() const = 0;
     virtual void modifyGrContextOptions(GrContextOptions* options) const {}
     virtual bool veto(SinkFlags) const { return false; }
+    // If not kAnyThread_Enclave, overrides the Sink's enclave
+    virtual int enclave() const { return kAnyThread_Enclave; }
 };
 
 struct Sink {
@@ -82,9 +96,6 @@ struct Sink {
     virtual SinkFlags flags() const = 0;
 };
 
-enum { kAnyThread_Enclave, kGPU_Enclave };
-static const int kNumEnclaves = kGPU_Enclave + 1;
-
 /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
 
 class GMSrc : public Src {
@@ -124,12 +135,14 @@ public:
     SkISize size() const override;
     Name name() const override;
     bool veto(SinkFlags) const override;
+    int enclave() const override { return fEnclave; }
 private:
     Path                    fPath;
     Mode                    fMode;
     DstColorType            fDstColorType;
     SkAlphaType             fDstAlphaType;
     float                   fScale;
+    int                     fEnclave;
 };
 
 class AndroidCodecSrc : public Src {
@@ -147,12 +160,14 @@ public:
     SkISize size() const override;
     Name name() const override;
     bool veto(SinkFlags) const override;
+    int enclave() const override { return fEnclave; }
 private:
     Path                    fPath;
     Mode                    fMode;
     CodecSrc::DstColorType  fDstColorType;
     SkAlphaType             fDstAlphaType;
     int                     fSampleSize;
+    int                     fEnclave;
 };
 
 // Allows for testing of various implementations of Android's BitmapRegionDecoder