1 /*
2  * Copyright 2020 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef ANDROID_GRAPHICS_MATRIX_H
18 #define ANDROID_GRAPHICS_MATRIX_H
19 
20 #include <jni.h>
21 #include <cutils/compiler.h>
22 #include <sys/cdefs.h>
23 
24 __BEGIN_DECLS
25 
26 /**
27  * Returns an array of floats that represents the 3x3 matrix of the java object.
28  * @param values The 9 values of the 3x3 matrix in the following order.
29  *               values[0] = scaleX  values[1] = skewX   values[2] = transX
30  *               values[3] = skewY   values[4] = scaleY  values[5] = transY
31  *               values[6] = persp0  values[7] = persp1  values[8] = persp2
32  * @return true if the values param was populated and false otherwise.
33 
34  */
35 ANDROID_API bool AMatrix_getContents(JNIEnv* env, jobject matrixObj, float values[9]);
36 
37 __END_DECLS
38 
39 #endif // ANDROID_GRAPHICS_MATRIX_H
40