Adding direct access to SkMipMap levels.

src/core/SkMipMap.h

Index: src/core/SkMipMap.h
diff --git a/src/core/SkMipMap.h b/src/core/SkMipMap.h
index bc6d154939a44c58cd4f0d3b8aa625f18ccfc5b8..6b2c6c54d5b944f802a03b547017199c3d1ceb25 100644
--- a/src/core/SkMipMap.h
+++ b/src/core/SkMipMap.h
@@ -29,6 +29,8 @@ public:
     };
 
     bool extractLevel(SkScalar scale, Level*) const;
+    int countLevels() const;
+    void getLevel(int index, Level*) const;
 
 protected:
     void onDataChange(void* oldData, void* newData) override {
@@ -48,4 +50,8 @@ private:
     typedef SkCachedData INHERITED;
 };
 
+// This function lets you determine how many levels a mipmap will have without
+// creating that mipmap.
+int SkGetMipMapLevelCount(int baseWidth, int baseHeight);

[reed1, 2016/01/26 14:25:55]

This should be a static method on SkMipMap..

int SkMipMap::ComputeLevelCount(int w, int h);

[cblume, 2016/01/26 17:16:53]

Done.

+
 #endif