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      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 
     26 namespace android {
     27 
     28 using namespace uirenderer;
     29 
     30 static jlong createAccelerateDecelerateInterpolator(JNIEnv* env, jobject clazz) {
     31     return reinterpret_cast<jlong>(new AccelerateDecelerateInterpolator());
     32 }
     33 
     34 static jlong createAccelerateInterpolator(JNIEnv* env, jobject clazz, jfloat factor) {
     35     return reinterpret_cast<jlong>(new AccelerateInterpolator(factor));
     36 }
     37 
     38 static jlong createAnticipateInterpolator(JNIEnv* env, jobject clazz, jfloat tension) {
     39     return reinterpret_cast<jlong>(new AnticipateInterpolator(tension));
     40 }
     41 
     42 static jlong createAnticipateOvershootInterpolator(JNIEnv* env, jobject clazz, jfloat tension) {
     43     return reinterpret_cast<jlong>(new AnticipateOvershootInterpolator(tension));
     44 }
     45 
     46 static jlong createBounceInterpolator(JNIEnv* env, jobject clazz) {
     47     return reinterpret_cast<jlong>(new BounceInterpolator());
     48 }
     49 
     50 static jlong createCycleInterpolator(JNIEnv* env, jobject clazz, jfloat cycles) {
     51     return reinterpret_cast<jlong>(new CycleInterpolator(cycles));
     52 }
     53 
     54 static jlong createDecelerateInterpolator(JNIEnv* env, jobject clazz, jfloat factor) {
     55     return reinterpret_cast<jlong>(new DecelerateInterpolator(factor));
     56 }
     57 
     58 static jlong createLinearInterpolator(JNIEnv* env, jobject clazz) {
     59     return reinterpret_cast<jlong>(new LinearInterpolator());
     60 }
     61 
     62 static jlong createOvershootInterpolator(JNIEnv* env, jobject clazz, jfloat tension) {
     63     return reinterpret_cast<jlong>(new OvershootInterpolator(tension));
     64 }
     65 
     66 static 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 
     79 static 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 
     93 const char* const kClassPathName = "com/android/internal/view/animation/NativeInterpolatorFactoryHelper";
     94 
     95 static 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 
    109 int register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper(JNIEnv* env) {
    110     return RegisterMethodsOrDie(env, kClassPathName, gMethods, NELEM(gMethods));
    111 }
    112 
    113 
    114 } // namespace android
    115