diff --git a/include/input/TouchVideoFrame.h b/include/input/TouchVideoFrame.h
index 640bf1f..a0f4f27 100644
--- a/include/input/TouchVideoFrame.h
+++ b/include/input/TouchVideoFrame.h
@@ -31,37 +31,29 @@
 class TouchVideoFrame {
 public:
     TouchVideoFrame(uint32_t width, uint32_t height, std::vector<int16_t> data,
-            const struct timeval& timestamp) :
-            mWidth(width), mHeight(height), mData(std::move(data)), mTimestamp(timestamp) {
-    }
+            const struct timeval& timestamp);
 
-    bool operator==(const TouchVideoFrame& rhs) const {
-        return mWidth == rhs.mWidth
-                && mHeight == rhs.mHeight
-                && mData == rhs.mData
-                && mTimestamp.tv_sec == rhs.mTimestamp.tv_sec
-                && mTimestamp.tv_usec == rhs.mTimestamp.tv_usec;
-    }
+    bool operator==(const TouchVideoFrame& rhs) const;
 
     /**
      * Width of the frame
      */
-    uint32_t getWidth() const { return mWidth; }
+    uint32_t getWidth() const;
     /**
      * Height of the frame
      */
-    uint32_t getHeight() const { return mHeight; }
+    uint32_t getHeight() const;
     /**
      * The touch strength data.
      * The array is a 2-D row-major matrix, with dimensions (height, width).
      * Total size of the array should equal getHeight() * getWidth().
      * Data is allowed to be negative.
      */
-    const std::vector<int16_t>& getData() const { return mData; }
+    const std::vector<int16_t>& getData() const;
     /**
      * Time at which the heatmap was taken.
      */
-    const struct timeval& getTimestamp() const { return mTimestamp; }
+    const struct timeval& getTimestamp() const;
 
 private:
     uint32_t mWidth;