1/*
2 * Copyright (C) 2014 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#define LOG_TAG "OpenGLRenderer"
18
19#include "jni.h"
20#include <nativehelper/JNIHelp.h>
21#include <cutils/log.h>
22#include "core_jni_helpers.h"
23
24#include <Interpolator.h>
25
26namespace android {
27
28using namespace uirenderer;
29
30static jlong createAccelerateDecelerateInterpolator(JNIEnv* env, jobject clazz) {
31    return reinterpret_cast<jlong>(new AccelerateDecelerateInterpolator());
32}
33
34static jlong createAccelerateInterpolator(JNIEnv* env, jobject clazz, jfloat factor) {
35    return reinterpret_cast<jlong>(new AccelerateInterpolator(factor));
36}
37
38static jlong createAnticipateInterpolator(JNIEnv* env, jobject clazz, jfloat tension) {
39    return reinterpret_cast<jlong>(new AnticipateInterpolator(tension));
40}
41
42static jlong createAnticipateOvershootInterpolator(JNIEnv* env, jobject clazz, jfloat tension) {
43    return reinterpret_cast<jlong>(new AnticipateOvershootInterpolator(tension));
44}
45
46static jlong createBounceInterpolator(JNIEnv* env, jobject clazz) {
47    return reinterpret_cast<jlong>(new BounceInterpolator());
48}
49
50static jlong createCycleInterpolator(JNIEnv* env, jobject clazz, jfloat cycles) {
51    return reinterpret_cast<jlong>(new CycleInterpolator(cycles));
52}
53
54static jlong createDecelerateInterpolator(JNIEnv* env, jobject clazz, jfloat factor) {
55    return reinterpret_cast<jlong>(new DecelerateInterpolator(factor));
56}
57
58static jlong createLinearInterpolator(JNIEnv* env, jobject clazz) {
59    return reinterpret_cast<jlong>(new LinearInterpolator());
60}
61
62static jlong createOvershootInterpolator(JNIEnv* env, jobject clazz, jfloat tension) {
63    return reinterpret_cast<jlong>(new OvershootInterpolator(tension));
64}
65
66static jlong createPathInterpolator(JNIEnv* env, jobject clazz, jfloatArray jX, jfloatArray jY) {
67    jsize lenX = env->GetArrayLength(jX);
68    jsize lenY = env->GetArrayLength(jY);
69    LOG_ALWAYS_FATAL_IF(lenX != lenY || lenX <= 0, "Invalid path interpolator, x size: %d,"
70            " y size: %d", lenX, lenY);
71    std::vector<float> x(lenX);
72    std::vector<float> y(lenY);
73    env->GetFloatArrayRegion(jX, 0, lenX, x.data());
74    env->GetFloatArrayRegion(jY, 0, lenX, y.data());
75
76    return reinterpret_cast<jlong>(new PathInterpolator(std::move(x), std::move(y)));
77}
78
79static jlong createLutInterpolator(JNIEnv* env, jobject clazz, jfloatArray jlut) {
80    jsize len = env->GetArrayLength(jlut);
81    if (len <= 0) {
82        return 0;
83    }
84    float* lut = new float[len];
85    env->GetFloatArrayRegion(jlut, 0, len, lut);
86    return reinterpret_cast<jlong>(new LUTInterpolator(lut, len));
87}
88
89// ----------------------------------------------------------------------------
90// JNI Glue
91// ----------------------------------------------------------------------------
92
93const char* const kClassPathName = "com/android/internal/view/animation/NativeInterpolatorFactoryHelper";
94
95static const JNINativeMethod gMethods[] = {
96    { "createAccelerateDecelerateInterpolator", "()J", (void*) createAccelerateDecelerateInterpolator },
97    { "createAccelerateInterpolator", "(F)J", (void*) createAccelerateInterpolator },
98    { "createAnticipateInterpolator", "(F)J", (void*) createAnticipateInterpolator },
99    { "createAnticipateOvershootInterpolator", "(F)J", (void*) createAnticipateOvershootInterpolator },
100    { "createBounceInterpolator", "()J", (void*) createBounceInterpolator },
101    { "createCycleInterpolator", "(F)J", (void*) createCycleInterpolator },
102    { "createDecelerateInterpolator", "(F)J", (void*) createDecelerateInterpolator },
103    { "createLinearInterpolator", "()J", (void*) createLinearInterpolator },
104    { "createOvershootInterpolator", "(F)J", (void*) createOvershootInterpolator },
105    { "createPathInterpolator", "([F[F)J", (void*) createPathInterpolator },
106    { "createLutInterpolator", "([F)J", (void*) createLutInterpolator },
107};
108
109int register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper(JNIEnv* env) {
110    return RegisterMethodsOrDie(env, kClassPathName, gMethods, NELEM(gMethods));
111}
112
113
114} // namespace android
115