1 files changed, 222 insertions, 0 deletions
diff --git a/tests/src/com/android/gallery3d/ui/PointerInfo.java b/tests/src/com/android/gallery3d/ui/PointerInfo.java
new file mode 100644
index 000000000..6c78556e1
--- /dev/null
+++ b/tests/src/com/android/gallery3d/ui/PointerInfo.java
@@ -0,0 +1,222 @@
+/*
+ * Copyright (C) 2010 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 com.android.gallery3d.ui;
+
+import java.nio.Buffer;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.CharBuffer;
+import java.nio.DoubleBuffer;
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+import java.nio.LongBuffer;
+import java.nio.ShortBuffer;
+
+import javax.microedition.khronos.opengles.GL10;
+
+public class PointerInfo {
+
+    /**
+     * The number of coordinates per vertex. 1..4
+     */
+    public int mSize;
+
+    /**
+     * The type of each coordinate.
+     */
+    public int mType;
+
+    /**
+     * The byte offset between consecutive vertices. 0 means mSize *
+     * sizeof(mType)
+     */
+    public int mStride;
+    public Buffer mPointer;
+    public ByteBuffer mTempByteBuffer;
+
+    public PointerInfo(int size, int type, int stride, Buffer pointer) {
+        mSize = size;
+        mType = type;
+        mStride = stride;
+        mPointer = pointer;
+    }
+
+    private int getStride() {
+        return mStride > 0 ? mStride : sizeof(mType) * mSize;
+    }
+
+    public void bindByteBuffer() {
+        mTempByteBuffer = mPointer == null ? null : toByteBuffer(-1, mPointer);
+    }
+
+    public void unbindByteBuffer() {
+        mTempByteBuffer = null;
+    }
+
+    private static int sizeof(int type) {
+        switch (type) {
+        case GL10.GL_UNSIGNED_BYTE:
+            return 1;
+        case GL10.GL_BYTE:
+            return 1;
+        case GL10.GL_SHORT:
+            return 2;
+        case GL10.GL_FIXED:
+            return 4;
+        case GL10.GL_FLOAT:
+            return 4;
+        default:
+            return 0;
+        }
+    }
+
+    private static ByteBuffer toByteBuffer(int byteCount, Buffer input) {
+        ByteBuffer result = null;
+        boolean convertWholeBuffer = (byteCount < 0);
+        if (input instanceof ByteBuffer) {
+            ByteBuffer input2 = (ByteBuffer) input;
+            int position = input2.position();
+            if (convertWholeBuffer) {
+                byteCount = input2.limit() - position;
+            }
+            result = ByteBuffer.allocate(byteCount).order(input2.order());
+            for (int i = 0; i < byteCount; i++) {
+                result.put(input2.get());
+            }
+            input2.position(position);
+        } else if (input instanceof CharBuffer) {
+            CharBuffer input2 = (CharBuffer) input;
+            int position = input2.position();
+            if (convertWholeBuffer) {
+                byteCount = (input2.limit() - position) * 2;
+            }
+            result = ByteBuffer.allocate(byteCount).order(input2.order());
+            CharBuffer result2 = result.asCharBuffer();
+            for (int i = 0; i < byteCount / 2; i++) {
+                result2.put(input2.get());
+            }
+            input2.position(position);
+        } else if (input instanceof ShortBuffer) {
+            ShortBuffer input2 = (ShortBuffer) input;
+            int position = input2.position();
+            if (convertWholeBuffer) {
+                byteCount = (input2.limit() - position)* 2;
+            }
+            result = ByteBuffer.allocate(byteCount).order(input2.order());
+            ShortBuffer result2 = result.asShortBuffer();
+            for (int i = 0; i < byteCount / 2; i++) {
+                result2.put(input2.get());
+            }
+            input2.position(position);
+        } else if (input instanceof IntBuffer) {
+            IntBuffer input2 = (IntBuffer) input;
+            int position = input2.position();
+            if (convertWholeBuffer) {
+                byteCount = (input2.limit() - position) * 4;
+            }
+            result = ByteBuffer.allocate(byteCount).order(input2.order());
+            IntBuffer result2 = result.asIntBuffer();
+            for (int i = 0; i < byteCount / 4; i++) {
+                result2.put(input2.get());
+            }
+            input2.position(position);
+        } else if (input instanceof FloatBuffer) {
+            FloatBuffer input2 = (FloatBuffer) input;
+            int position = input2.position();
+            if (convertWholeBuffer) {
+                byteCount = (input2.limit() - position) * 4;
+            }
+            result = ByteBuffer.allocate(byteCount).order(input2.order());
+            FloatBuffer result2 = result.asFloatBuffer();
+            for (int i = 0; i < byteCount / 4; i++) {
+                result2.put(input2.get());
+            }
+            input2.position(position);
+        } else if (input instanceof DoubleBuffer) {
+            DoubleBuffer input2 = (DoubleBuffer) input;
+            int position = input2.position();
+            if (convertWholeBuffer) {
+                byteCount = (input2.limit() - position) * 8;
+            }
+            result = ByteBuffer.allocate(byteCount).order(input2.order());
+            DoubleBuffer result2 = result.asDoubleBuffer();
+            for (int i = 0; i < byteCount / 8; i++) {
+                result2.put(input2.get());
+            }
+            input2.position(position);
+        } else if (input instanceof LongBuffer) {
+            LongBuffer input2 = (LongBuffer) input;
+            int position = input2.position();
+            if (convertWholeBuffer) {
+                byteCount = (input2.limit() - position) * 8;
+            }
+            result = ByteBuffer.allocate(byteCount).order(input2.order());
+            LongBuffer result2 = result.asLongBuffer();
+            for (int i = 0; i < byteCount / 8; i++) {
+                result2.put(input2.get());
+            }
+            input2.position(position);
+        } else {
+            throw new RuntimeException("Unimplemented Buffer subclass.");
+        }
+        result.rewind();
+        // The OpenGL API will interpret the result in hardware byte order,
+        // so we better do that as well:
+        result.order(ByteOrder.nativeOrder());
+        return result;
+    }
+
+    public void getArrayElement(int index, double[] result) {
+        if (mTempByteBuffer == null) {
+            throw new IllegalArgumentException("undefined pointer");
+        }
+        if (mStride < 0) {
+            throw new IllegalArgumentException("invalid stride");
+        }
+
+        int stride = getStride();
+        ByteBuffer byteBuffer = mTempByteBuffer;
+        int size = mSize;
+        int type = mType;
+        int sizeofType = sizeof(type);
+        int byteOffset = stride * index;
+
+        for (int i = 0; i < size; i++) {
+            switch (type) {
+            case GL10.GL_BYTE:
+            case GL10.GL_UNSIGNED_BYTE:
+                result[i] = byteBuffer.get(byteOffset);
+                break;
+            case GL10.GL_SHORT:
+                ShortBuffer shortBuffer = byteBuffer.asShortBuffer();
+                result[i] = shortBuffer.get(byteOffset / 2);
+                break;
+            case GL10.GL_FIXED:
+                IntBuffer intBuffer = byteBuffer.asIntBuffer();
+                result[i] = intBuffer.get(byteOffset / 4);
+                break;
+            case GL10.GL_FLOAT:
+                FloatBuffer floatBuffer = byteBuffer.asFloatBuffer();
+                result[i] = floatBuffer.get(byteOffset / 4);
+                break;
+            default:
+                throw new UnsupportedOperationException("unknown type");
+            }
+            byteOffset += sizeofType;
+        }
+    }
+}