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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 <android_runtime/AndroidRuntime.h>
     22 
     23 #include <Interpolator.h>
     24 
     25 namespace android {
     26 
     27 using namespace uirenderer;
     28 
     29 #ifdef USE_OPENGL_RENDERER
     30 
     31 static jlong createAccelerateDecelerateInterpolator(JNIEnv* env, jobject clazz) {
     32     return reinterpret_cast<jlong>(new AccelerateDecelerateInterpolator());
     33 }
     34 
     35 static jlong createAccelerateInterpolator(JNIEnv* env, jobject clazz, jfloat factor) {
     36     return reinterpret_cast<jlong>(new AccelerateInterpolator(factor));
     37 }
     38 
     39 static jlong createAnticipateInterpolator(JNIEnv* env, jobject clazz, jfloat tension) {
     40     return reinterpret_cast<jlong>(new AnticipateInterpolator(tension));
     41 }
     42 
     43 static jlong createAnticipateOvershootInterpolator(JNIEnv* env, jobject clazz, jfloat tension) {
     44     return reinterpret_cast<jlong>(new AnticipateOvershootInterpolator(tension));
     45 }
     46 
     47 static jlong createBounceInterpolator(JNIEnv* env, jobject clazz) {
     48     return reinterpret_cast<jlong>(new BounceInterpolator());
     49 }
     50 
     51 static jlong createCycleInterpolator(JNIEnv* env, jobject clazz, jfloat cycles) {
     52     return reinterpret_cast<jlong>(new CycleInterpolator(cycles));
     53 }
     54 
     55 static jlong createDecelerateInterpolator(JNIEnv* env, jobject clazz, jfloat factor) {
     56     return reinterpret_cast<jlong>(new DecelerateInterpolator(factor));
     57 }
     58 
     59 static jlong createLinearInterpolator(JNIEnv* env, jobject clazz) {
     60     return reinterpret_cast<jlong>(new LinearInterpolator());
     61 }
     62 
     63 static jlong createOvershootInterpolator(JNIEnv* env, jobject clazz, jfloat tension) {
     64     return reinterpret_cast<jlong>(new OvershootInterpolator(tension));
     65 }
     66 
     67 static jlong createLutInterpolator(JNIEnv* env, jobject clazz, jfloatArray jlut) {
     68     jsize len = env->GetArrayLength(jlut);
     69     if (len <= 0) {
     70         return 0;
     71     }
     72     float* lut = new float[len];
     73     env->GetFloatArrayRegion(jlut, 0, len, lut);
     74     return reinterpret_cast<jlong>(new LUTInterpolator(lut, len));
     75 }
     76 
     77 #endif
     78 
     79 // ----------------------------------------------------------------------------
     80 // JNI Glue
     81 // ----------------------------------------------------------------------------
     82 
     83 const char* const kClassPathName = "com/android/internal/view/animation/NativeInterpolatorFactoryHelper";
     84 
     85 static JNINativeMethod gMethods[] = {
     86 #ifdef USE_OPENGL_RENDERER
     87     { "createAccelerateDecelerateInterpolator", "()J", (void*) createAccelerateDecelerateInterpolator },
     88     { "createAccelerateInterpolator", "(F)J", (void*) createAccelerateInterpolator },
     89     { "createAnticipateInterpolator", "(F)J", (void*) createAnticipateInterpolator },
     90     { "createAnticipateOvershootInterpolator", "(F)J", (void*) createAnticipateOvershootInterpolator },
     91     { "createBounceInterpolator", "()J", (void*) createBounceInterpolator },
     92     { "createCycleInterpolator", "(F)J", (void*) createCycleInterpolator },
     93     { "createDecelerateInterpolator", "(F)J", (void*) createDecelerateInterpolator },
     94     { "createLinearInterpolator", "()J", (void*) createLinearInterpolator },
     95     { "createOvershootInterpolator", "(F)J", (void*) createOvershootInterpolator },
     96     { "createLutInterpolator", "([F)J", (void*) createLutInterpolator },
     97 #endif
     98 };
     99 
    100 int register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper(JNIEnv* env) {
    101     return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
    102 }
    103 
    104 
    105 } // namespace android
    106