Add API 31 sources
Test: None
Change-Id: Ie45894f7a232b2a15e2439b2527ca1813f334cc5
diff --git a/android/renderscript/Matrix2f.java b/android/renderscript/Matrix2f.java
new file mode 100644
index 0000000..5f5e709
--- /dev/null
+++ b/android/renderscript/Matrix2f.java
@@ -0,0 +1,197 @@
+/*
+ * Copyright (C) 2009-2012 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;
+
+
+/**
+ * Class for exposing the native RenderScript rs_matrix2x2 type back to the Android system.
+ *
+ * @deprecated Renderscript has been deprecated in API level 31. Please refer to the <a
+ * href="https://developer.android.com/guide/topics/renderscript/migration-guide">migration
+ * guide</a> for the proposed alternatives.
+ **/
+@Deprecated
+public class Matrix2f {
+
+ /**
+ * Creates a new identity 2x2 matrix
+ */
+ public Matrix2f() {
+ mMat = new float[4];
+ loadIdentity();
+ }
+
+ /**
+ * Creates a new matrix and sets its values from the given
+ * parameter
+ *
+ * @param dataArray values to set the matrix to, must be 4
+ * floats long
+ */
+ public Matrix2f(float[] dataArray) {
+ mMat = new float[4];
+ System.arraycopy(dataArray, 0, mMat, 0, mMat.length);
+ }
+
+ /**
+ * Return a reference to the internal array representing matrix
+ * values. Modifying this array will also change the matrix
+ *
+ * @return internal array representing the matrix
+ */
+ public float[] getArray() {
+ return mMat;
+ }
+
+ /**
+ * Returns the value for a given row and column
+ *
+ * @param x column of the value to return
+ * @param y row of the value to return
+ *
+ * @return value in the yth row and xth column
+ */
+ public float get(int x, int y) {
+ return mMat[x*2 + y];
+ }
+
+ /**
+ * Sets the value for a given row and column
+ *
+ * @param x column of the value to set
+ * @param y row of the value to set
+ */
+ public void set(int x, int y, float v) {
+ mMat[x*2 + y] = v;
+ }
+
+ /**
+ * Sets the matrix values to identity
+ */
+ public void loadIdentity() {
+ mMat[0] = 1;
+ mMat[1] = 0;
+
+ mMat[2] = 0;
+ mMat[3] = 1;
+ }
+
+ /**
+ * Sets the values of the matrix to those of the parameter
+ *
+ * @param src matrix to load the values from
+ */
+ public void load(Matrix2f src) {
+ System.arraycopy(src.getArray(), 0, mMat, 0, mMat.length);
+ }
+
+ /**
+ * Sets current values to be a rotation matrix of given angle
+ *
+ * @param rot rotation angle
+ */
+ public void loadRotate(float rot) {
+ float c, s;
+ rot *= (float)(java.lang.Math.PI / 180.0f);
+ c = (float)java.lang.Math.cos(rot);
+ s = (float)java.lang.Math.sin(rot);
+ mMat[0] = c;
+ mMat[1] = -s;
+ mMat[2] = s;
+ mMat[3] = c;
+ }
+
+ /**
+ * Sets current values to be a scale matrix of given dimensions
+ *
+ * @param x scale component x
+ * @param y scale component y
+ */
+ public void loadScale(float x, float y) {
+ loadIdentity();
+ mMat[0] = x;
+ mMat[3] = y;
+ }
+
+ /**
+ * Sets current values to be the result of multiplying two given
+ * matrices
+ *
+ * @param lhs left hand side matrix
+ * @param rhs right hand side matrix
+ */
+ public void loadMultiply(Matrix2f lhs, Matrix2f rhs) {
+ for (int i=0 ; i<2 ; i++) {
+ float ri0 = 0;
+ float ri1 = 0;
+ for (int j=0 ; j<2 ; j++) {
+ float rhs_ij = rhs.get(i,j);
+ ri0 += lhs.get(j,0) * rhs_ij;
+ ri1 += lhs.get(j,1) * rhs_ij;
+ }
+ set(i,0, ri0);
+ set(i,1, ri1);
+ }
+ }
+
+ /**
+ * Post-multiplies the current matrix by a given parameter
+ *
+ * @param rhs right hand side to multiply by
+ */
+ public void multiply(Matrix2f rhs) {
+ Matrix2f tmp = new Matrix2f();
+ tmp.loadMultiply(this, rhs);
+ load(tmp);
+ }
+ /**
+ * Modifies the current matrix by post-multiplying it with a
+ * rotation matrix of given angle
+ *
+ * @param rot angle of rotation
+ */
+ public void rotate(float rot) {
+ Matrix2f tmp = new Matrix2f();
+ tmp.loadRotate(rot);
+ multiply(tmp);
+ }
+ /**
+ * Modifies the current matrix by post-multiplying it with a
+ * scale matrix of given dimensions
+ *
+ * @param x scale component x
+ * @param y scale component y
+ */
+ public void scale(float x, float y) {
+ Matrix2f tmp = new Matrix2f();
+ tmp.loadScale(x, y);
+ multiply(tmp);
+ }
+ /**
+ * Sets the current matrix to its transpose
+ */
+ public void transpose() {
+ float temp = mMat[1];
+ mMat[1] = mMat[2];
+ mMat[2] = temp;
+ }
+
+ final float[] mMat;
+}
+
+
+
