Implement holders for Matrix and Vector data.

graphics/java/android/renderscript/FieldPacker.java

@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.renderscript;
+
+
+public class FieldPacker {
+    public FieldPacker(int len) {
+        mPos = 0;
+        mData = new byte[len];
+    }
+
+    public void align(int v) {
+        while ((mPos & (v - 1)) != 0) {
+            mData[mPos++] = 0;
+        }
+    }
+
+    void reset() {
+        mPos = 0;
+    }
+
+    void addI8(byte v) {
+        mData[mPos++] = v;
+    }
+
+    void addI16(short v) {
+        align(2);
+        mData[mPos++] = (byte)(v & 0xff);
+        mData[mPos++] = (byte)(v >> 8);
+    }
+
+    void addI32(int v) {
+        align(4);
+        mData[mPos++] = (byte)(v & 0xff);
+        mData[mPos++] = (byte)((v >> 8) & 0xff);
+        mData[mPos++] = (byte)((v >> 16) & 0xff);
+        mData[mPos++] = (byte)((v >> 24) & 0xff);
+    }
+
+    void addI64(long v) {
+        align(8);
+        mData[mPos++] = (byte)(v & 0xff);
+        mData[mPos++] = (byte)((v >> 8) & 0xff);
+        mData[mPos++] = (byte)((v >> 16) & 0xff);
+        mData[mPos++] = (byte)((v >> 24) & 0xff);
+        mData[mPos++] = (byte)((v >> 32) & 0xff);
+        mData[mPos++] = (byte)((v >> 40) & 0xff);
+        mData[mPos++] = (byte)((v >> 48) & 0xff);
+        mData[mPos++] = (byte)((v >> 56) & 0xff);
+    }
+
+    void addU8(short v) {
+        if ((v < 0) || (v > 0xff)) {
+            throw new IllegalArgumentException("Saving value out of range for type");
+        }
+        mData[mPos++] = (byte)v;
+    }
+
+    void addU16(int v) {
+        if ((v < 0) || (v > 0xffff)) {
+            throw new IllegalArgumentException("Saving value out of range for type");
+        }
+        align(2);
+        mData[mPos++] = (byte)(v & 0xff);
+        mData[mPos++] = (byte)(v >> 8);
+    }
+
+    void addU32(long v) {
+        if ((v < 0) || (v > 0xffffffff)) {
+            throw new IllegalArgumentException("Saving value out of range for type");
+        }
+        align(4);
+        mData[mPos++] = (byte)(v & 0xff);
+        mData[mPos++] = (byte)((v >> 8) & 0xff);
+        mData[mPos++] = (byte)((v >> 16) & 0xff);
+        mData[mPos++] = (byte)((v >> 24) & 0xff);
+    }
+
+    void addU64(long v) {
+        if (v < 0) {
+            throw new IllegalArgumentException("Saving value out of range for type");
+        }
+        align(8);
+        mData[mPos++] = (byte)(v & 0xff);
+        mData[mPos++] = (byte)((v >> 8) & 0xff);
+        mData[mPos++] = (byte)((v >> 16) & 0xff);
+        mData[mPos++] = (byte)((v >> 24) & 0xff);
+        mData[mPos++] = (byte)((v >> 32) & 0xff);
+        mData[mPos++] = (byte)((v >> 40) & 0xff);
+        mData[mPos++] = (byte)((v >> 48) & 0xff);
+        mData[mPos++] = (byte)((v >> 56) & 0xff);
+    }
+
+    void addF32(float v) {
+        addI32(Float.floatToRawIntBits(v));
+    }
+
+    void addF64(float v) {
+        addI64(Double.doubleToRawLongBits(v));
+    }
+
+    final byte[] getData() {
+        return mData;
+    }
+
+    private final byte mData[];
+    private int mPos;
+
+}
+
+