1 #include "GraphicsJNI.h"
2 #include "SkiaInterpolator.h"
3
Interpolator_constructor(JNIEnv * env,jobject clazz,jint valueCount,jint frameCount)4 static jlong Interpolator_constructor(JNIEnv* env, jobject clazz, jint valueCount, jint frameCount)
5 {
6 return reinterpret_cast<jlong>(new SkiaInterpolator(valueCount, frameCount));
7 }
8
Interpolator_destructor(JNIEnv * env,jobject clazz,jlong interpHandle)9 static void Interpolator_destructor(JNIEnv* env, jobject clazz, jlong interpHandle)
10 {
11 SkiaInterpolator* interp = reinterpret_cast<SkiaInterpolator*>(interpHandle);
12 delete interp;
13 }
14
Interpolator_reset(JNIEnv * env,jobject clazz,jlong interpHandle,jint valueCount,jint frameCount)15 static void Interpolator_reset(JNIEnv* env, jobject clazz, jlong interpHandle, jint valueCount, jint frameCount)
16 {
17 SkiaInterpolator* interp = reinterpret_cast<SkiaInterpolator*>(interpHandle);
18 interp->reset(valueCount, frameCount);
19 }
20
Interpolator_setKeyFrame(JNIEnv * env,jobject clazz,jlong interpHandle,jint index,jint msec,jfloatArray valueArray,jfloatArray blendArray)21 static void Interpolator_setKeyFrame(JNIEnv* env, jobject clazz, jlong interpHandle, jint index, jint msec, jfloatArray valueArray, jfloatArray blendArray)
22 {
23 SkiaInterpolator* interp = reinterpret_cast<SkiaInterpolator*>(interpHandle);
24
25 AutoJavaFloatArray autoValues(env, valueArray);
26 AutoJavaFloatArray autoBlend(env, blendArray, 4);
27 SkScalar* scalars = autoValues.ptr();
28 SkScalar* blend = autoBlend.ptr();
29
30 interp->setKeyFrame(index, msec, scalars, blend);
31 }
32
Interpolator_setRepeatMirror(JNIEnv * env,jobject clazz,jlong interpHandle,jfloat repeatCount,jboolean mirror)33 static void Interpolator_setRepeatMirror(JNIEnv* env, jobject clazz, jlong interpHandle, jfloat repeatCount, jboolean mirror)
34 {
35 SkiaInterpolator* interp = reinterpret_cast<SkiaInterpolator*>(interpHandle);
36 if (repeatCount > 32000)
37 repeatCount = 32000;
38
39 interp->setRepeatCount(repeatCount);
40 interp->setMirror(mirror != 0);
41 }
42
Interpolator_timeToValues(JNIEnv * env,jobject clazz,jlong interpHandle,jint msec,jfloatArray valueArray)43 static jint Interpolator_timeToValues(JNIEnv* env, jobject clazz, jlong interpHandle, jint msec, jfloatArray valueArray)
44 {
45 SkiaInterpolator* interp = reinterpret_cast<SkiaInterpolator*>(interpHandle);
46 SkiaInterpolator::Result result;
47
48 float* values = valueArray ? env->GetFloatArrayElements(valueArray, NULL) : NULL;
49 result = interp->timeToValues(msec, (SkScalar*)values);
50
51 if (valueArray) {
52 int n = env->GetArrayLength(valueArray);
53 for (int i = 0; i < n; i++) {
54 values[i] = SkScalarToFloat(*(SkScalar*)&values[i]);
55 }
56 env->ReleaseFloatArrayElements(valueArray, values, 0);
57 }
58
59 return static_cast<jint>(result);
60 }
61
62 // ----------------------------------------------------------------------------
63
64 /*
65 * JNI registration.
66 */
67 static const JNINativeMethod gInterpolatorMethods[] = {
68 { "nativeConstructor", "(II)J", (void*)Interpolator_constructor },
69 { "nativeDestructor", "(J)V", (void*)Interpolator_destructor },
70 { "nativeReset", "(JII)V", (void*)Interpolator_reset },
71 { "nativeSetKeyFrame", "(JII[F[F)V", (void*)Interpolator_setKeyFrame },
72 { "nativeSetRepeatMirror", "(JFZ)V", (void*)Interpolator_setRepeatMirror },
73 { "nativeTimeToValues", "(JI[F)I", (void*)Interpolator_timeToValues }
74 };
75
register_android_graphics_Interpolator(JNIEnv * env)76 int register_android_graphics_Interpolator(JNIEnv* env)
77 {
78 return android::RegisterMethodsOrDie(env, "android/graphics/Interpolator",
79 gInterpolatorMethods, NELEM(gInterpolatorMethods));
80 }
81