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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;
}
}
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