1 files changed, 66 insertions, 0 deletions
diff --git a/src/com/android/camera/support/glrenderer/NinePatchChunk.java b/src/com/android/camera/support/glrenderer/NinePatchChunk.java
new file mode 100644
index 000000000..f7deb1864
--- /dev/null
+++ b/src/com/android/camera/support/glrenderer/NinePatchChunk.java
@@ -0,0 +1,66 @@
+package com.android.camera.support.glrenderer;
+
+import android.graphics.Rect;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+// See "frameworks/base/include/utils/ResourceTypes.h" for the format of
+// NinePatch chunk.
+class NinePatchChunk {
+
+    public static final int NO_COLOR = 0x00000001;
+    public static final int TRANSPARENT_COLOR = 0x00000000;
+
+    public Rect mPaddings = new Rect();
+
+    public int mDivX[];
+    public int mDivY[];
+    public int mColor[];
+
+    private static void readIntArray(int[] data, ByteBuffer buffer) {
+        for (int i = 0, n = data.length; i < n; ++i) {
+            data[i] = buffer.getInt();
+        }
+    }
+
+    private static void checkDivCount(int length) {
+        if (length == 0 || (length & 0x01) != 0) {
+            throw new RuntimeException("invalid nine-patch: " + length);
+        }
+    }
+
+    public static NinePatchChunk deserialize(byte[] data) {
+        ByteBuffer byteBuffer =
+                ByteBuffer.wrap(data).order(ByteOrder.nativeOrder());
+
+        byte wasSerialized = byteBuffer.get();
+        if (wasSerialized == 0) return null;
+
+        NinePatchChunk chunk = new NinePatchChunk();
+        chunk.mDivX = new int[byteBuffer.get()];
+        chunk.mDivY = new int[byteBuffer.get()];
+        chunk.mColor = new int[byteBuffer.get()];
+
+        checkDivCount(chunk.mDivX.length);
+        checkDivCount(chunk.mDivY.length);
+
+        // skip 8 bytes
+        byteBuffer.getInt();
+        byteBuffer.getInt();
+
+        chunk.mPaddings.left = byteBuffer.getInt();
+        chunk.mPaddings.right = byteBuffer.getInt();
+        chunk.mPaddings.top = byteBuffer.getInt();
+        chunk.mPaddings.bottom = byteBuffer.getInt();
+
+        // skip 4 bytes
+        byteBuffer.getInt();
+
+        readIntArray(chunk.mDivX, byteBuffer);
+        readIntArray(chunk.mDivY, byteBuffer);
+        readIntArray(chunk.mColor, byteBuffer);
+
+        return chunk;
+    }
+}
+\ No newline at end of file