1 #include "GraphicsJNI.h"
2 #include "SkInterpolator.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 SkInterpolator(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 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(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 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(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 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(interpHandle);
24
25 AutoJavaFloatArray autoValues(env, valueArray);
26 AutoJavaFloatArray autoBlend(env, blendArray, 4);
27 #ifdef SK_SCALAR_IS_FLOAT
28 SkScalar* scalars = autoValues.ptr();
29 SkScalar* blend = autoBlend.ptr();
30 #else
31 #error Need to convert float array to SkScalar array before calling the following function.
32 #endif
33
34 interp->setKeyFrame(index, msec, scalars, blend);
35 }
36
Interpolator_setRepeatMirror(JNIEnv * env,jobject clazz,jlong interpHandle,jfloat repeatCount,jboolean mirror)37 static void Interpolator_setRepeatMirror(JNIEnv* env, jobject clazz, jlong interpHandle, jfloat repeatCount, jboolean mirror)
38 {
39 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(interpHandle);
40 if (repeatCount > 32000)
41 repeatCount = 32000;
42
43 interp->setRepeatCount(repeatCount);
44 interp->setMirror(mirror != 0);
45 }
46
Interpolator_timeToValues(JNIEnv * env,jobject clazz,jlong interpHandle,jint msec,jfloatArray valueArray)47 static jint Interpolator_timeToValues(JNIEnv* env, jobject clazz, jlong interpHandle, jint msec, jfloatArray valueArray)
48 {
49 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(interpHandle);
50 SkInterpolatorBase::Result result;
51
52 float* values = valueArray ? env->GetFloatArrayElements(valueArray, NULL) : NULL;
53 result = interp->timeToValues(msec, (SkScalar*)values);
54
55 if (valueArray) {
56 int n = env->GetArrayLength(valueArray);
57 for (int i = 0; i < n; i++) {
58 values[i] = SkScalarToFloat(*(SkScalar*)&values[i]);
59 }
60 env->ReleaseFloatArrayElements(valueArray, values, 0);
61 }
62
63 return static_cast<jint>(result);
64 }
65
66 // ----------------------------------------------------------------------------
67
68 /*
69 * JNI registration.
70 */
71 static const JNINativeMethod gInterpolatorMethods[] = {
72 { "nativeConstructor", "(II)J", (void*)Interpolator_constructor },
73 { "nativeDestructor", "(J)V", (void*)Interpolator_destructor },
74 { "nativeReset", "(JII)V", (void*)Interpolator_reset },
75 { "nativeSetKeyFrame", "(JII[F[F)V", (void*)Interpolator_setKeyFrame },
76 { "nativeSetRepeatMirror", "(JFZ)V", (void*)Interpolator_setRepeatMirror },
77 { "nativeTimeToValues", "(JI[F)I", (void*)Interpolator_timeToValues }
78 };
79
register_android_graphics_Interpolator(JNIEnv * env)80 int register_android_graphics_Interpolator(JNIEnv* env)
81 {
82 return android::RegisterMethodsOrDie(env, "android/graphics/Interpolator",
83 gInterpolatorMethods, NELEM(gInterpolatorMethods));
84 }
85