[skotty] Add Json DM source

Generates a filmstrip with evenly distributed frames for a Skotty animation.

TBR=
Change-Id: Ia89e0d65d59fd5ab4ef221a231e9b3e0c033828a
Reviewed-on: https://skia-review.googlesource.com/90025
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/dm/DMSrcSink.h b/dm/DMSrcSink.h
index 3f3c8b2892..67128ead06 100644
--- a/dm/DMSrcSink.h
+++ b/dm/DMSrcSink.h
@@ -21,6 +21,8 @@
 
 //#define TEST_VIA_SVG
 
+namespace skotty { class Animation; }
+
 namespace DM {
 
 // This is just convenience.  It lets you use either return "foo" or return SkStringPrintf(...).
@@ -260,6 +262,24 @@ private:
     Path fPath;
 };
 
+class SkottySrc final : public Src {
+public:
+    explicit SkottySrc(Path path);
+
+    Error draw(SkCanvas*) const override;
+    SkISize size() const override;
+    Name name() const override;
+    bool veto(SinkFlags) const override;
+
+private:
+    // Generates a kTileCount x kTileCount filmstrip with evenly distributed frames.
+    static constexpr int               kTileCount = 5;
+
+    Name                               fName;
+    SkISize                            fTileSize = SkISize::MakeEmpty();
+    std::unique_ptr<skotty::Animation> fAnimation;
+};
+
 #if defined(SK_XML)
 } // namespace DM