1 #include "GraphicsJNI.h"
2 #include "SkInterpolator.h"
3 #include "core_jni_helpers.h"
4
5 #include <jni.h>
6
Interpolator_constructor(JNIEnv * env,jobject clazz,jint valueCount,jint frameCount)7 static jlong Interpolator_constructor(JNIEnv* env, jobject clazz, jint valueCount, jint frameCount)
8 {
9 return reinterpret_cast<jlong>(new SkInterpolator(valueCount, frameCount));
10 }
11
Interpolator_destructor(JNIEnv * env,jobject clazz,jlong interpHandle)12 static void Interpolator_destructor(JNIEnv* env, jobject clazz, jlong interpHandle)
13 {
14 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(interpHandle);
15 delete interp;
16 }
17
Interpolator_reset(JNIEnv * env,jobject clazz,jlong interpHandle,jint valueCount,jint frameCount)18 static void Interpolator_reset(JNIEnv* env, jobject clazz, jlong interpHandle, jint valueCount, jint frameCount)
19 {
20 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(interpHandle);
21 interp->reset(valueCount, frameCount);
22 }
23
Interpolator_setKeyFrame(JNIEnv * env,jobject clazz,jlong interpHandle,jint index,jint msec,jfloatArray valueArray,jfloatArray blendArray)24 static void Interpolator_setKeyFrame(JNIEnv* env, jobject clazz, jlong interpHandle, jint index, jint msec, jfloatArray valueArray, jfloatArray blendArray)
25 {
26 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(interpHandle);
27
28 AutoJavaFloatArray autoValues(env, valueArray);
29 AutoJavaFloatArray autoBlend(env, blendArray, 4);
30 #ifdef SK_SCALAR_IS_FLOAT
31 SkScalar* scalars = autoValues.ptr();
32 SkScalar* blend = autoBlend.ptr();
33 #else
34 #error Need to convert float array to SkScalar array before calling the following function.
35 #endif
36
37 interp->setKeyFrame(index, msec, scalars, blend);
38 }
39
Interpolator_setRepeatMirror(JNIEnv * env,jobject clazz,jlong interpHandle,jfloat repeatCount,jboolean mirror)40 static void Interpolator_setRepeatMirror(JNIEnv* env, jobject clazz, jlong interpHandle, jfloat repeatCount, jboolean mirror)
41 {
42 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(interpHandle);
43 if (repeatCount > 32000)
44 repeatCount = 32000;
45
46 interp->setRepeatCount(repeatCount);
47 interp->setMirror(mirror != 0);
48 }
49
Interpolator_timeToValues(JNIEnv * env,jobject clazz,jlong interpHandle,jint msec,jfloatArray valueArray)50 static jint Interpolator_timeToValues(JNIEnv* env, jobject clazz, jlong interpHandle, jint msec, jfloatArray valueArray)
51 {
52 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(interpHandle);
53 SkInterpolatorBase::Result result;
54
55 float* values = valueArray ? env->GetFloatArrayElements(valueArray, NULL) : NULL;
56 result = interp->timeToValues(msec, (SkScalar*)values);
57
58 if (valueArray) {
59 int n = env->GetArrayLength(valueArray);
60 for (int i = 0; i < n; i++) {
61 values[i] = SkScalarToFloat(*(SkScalar*)&values[i]);
62 }
63 env->ReleaseFloatArrayElements(valueArray, values, 0);
64 }
65
66 return static_cast<jint>(result);
67 }
68
69 // ----------------------------------------------------------------------------
70
71 /*
72 * JNI registration.
73 */
74 static const JNINativeMethod gInterpolatorMethods[] = {
75 { "nativeConstructor", "(II)J", (void*)Interpolator_constructor },
76 { "nativeDestructor", "(J)V", (void*)Interpolator_destructor },
77 { "nativeReset", "(JII)V", (void*)Interpolator_reset },
78 { "nativeSetKeyFrame", "(JII[F[F)V", (void*)Interpolator_setKeyFrame },
79 { "nativeSetRepeatMirror", "(JFZ)V", (void*)Interpolator_setRepeatMirror },
80 { "nativeTimeToValues", "(JI[F)I", (void*)Interpolator_timeToValues }
81 };
82
register_android_graphics_Interpolator(JNIEnv * env)83 int register_android_graphics_Interpolator(JNIEnv* env)
84 {
85 return android::RegisterMethodsOrDie(env, "android/graphics/Interpolator",
86 gInterpolatorMethods, NELEM(gInterpolatorMethods));
87 }
88