1 #include "jni.h"
2 #include <android_runtime/AndroidRuntime.h>
3
4 #include "GraphicsJNI.h"
5 #include "SkInterpolator.h"
6 #include "SkTemplates.h"
7
Interpolator_constructor(JNIEnv * env,jobject clazz,jint valueCount,jint frameCount)8 static jlong Interpolator_constructor(JNIEnv* env, jobject clazz, jint valueCount, jint frameCount)
9 {
10 return reinterpret_cast<jlong>(new SkInterpolator(valueCount, frameCount));
11 }
12
Interpolator_destructor(JNIEnv * env,jobject clazz,jlong interpHandle)13 static void Interpolator_destructor(JNIEnv* env, jobject clazz, jlong interpHandle)
14 {
15 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(interpHandle);
16 delete interp;
17 }
18
Interpolator_reset(JNIEnv * env,jobject clazz,jlong interpHandle,jint valueCount,jint frameCount)19 static void Interpolator_reset(JNIEnv* env, jobject clazz, jlong interpHandle, jint valueCount, jint frameCount)
20 {
21 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(interpHandle);
22 interp->reset(valueCount, frameCount);
23 }
24
Interpolator_setKeyFrame(JNIEnv * env,jobject clazz,jlong interpHandle,jint index,jint msec,jfloatArray valueArray,jfloatArray blendArray)25 static void Interpolator_setKeyFrame(JNIEnv* env, jobject clazz, jlong interpHandle, jint index, jint msec, jfloatArray valueArray, jfloatArray blendArray)
26 {
27 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(interpHandle);
28
29 AutoJavaFloatArray autoValues(env, valueArray);
30 AutoJavaFloatArray autoBlend(env, blendArray, 4);
31 #ifdef SK_SCALAR_IS_FLOAT
32 SkScalar* scalars = autoValues.ptr();
33 SkScalar* blend = autoBlend.ptr();
34 #else
35 #error Need to convert float array to SkScalar array before calling the following function.
36 #endif
37
38 interp->setKeyFrame(index, msec, scalars, blend);
39 }
40
Interpolator_setRepeatMirror(JNIEnv * env,jobject clazz,jlong interpHandle,jfloat repeatCount,jboolean mirror)41 static void Interpolator_setRepeatMirror(JNIEnv* env, jobject clazz, jlong interpHandle, jfloat repeatCount, jboolean mirror)
42 {
43 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(interpHandle);
44 if (repeatCount > 32000)
45 repeatCount = 32000;
46
47 interp->setRepeatCount(repeatCount);
48 interp->setMirror(mirror != 0);
49 }
50
Interpolator_timeToValues(JNIEnv * env,jobject clazz,jlong interpHandle,jint msec,jfloatArray valueArray)51 static jint Interpolator_timeToValues(JNIEnv* env, jobject clazz, jlong interpHandle, jint msec, jfloatArray valueArray)
52 {
53 SkInterpolator* interp = reinterpret_cast<SkInterpolator*>(interpHandle);
54 SkInterpolatorBase::Result result;
55
56 float* values = valueArray ? env->GetFloatArrayElements(valueArray, NULL) : NULL;
57 result = interp->timeToValues(msec, (SkScalar*)values);
58
59 if (valueArray) {
60 int n = env->GetArrayLength(valueArray);
61 for (int i = 0; i < n; i++) {
62 values[i] = SkScalarToFloat(*(SkScalar*)&values[i]);
63 }
64 env->ReleaseFloatArrayElements(valueArray, values, 0);
65 }
66
67 return static_cast<jint>(result);
68 }
69
70 // ----------------------------------------------------------------------------
71
72 /*
73 * JNI registration.
74 */
75 static JNINativeMethod gInterpolatorMethods[] = {
76 { "nativeConstructor", "(II)J", (void*)Interpolator_constructor },
77 { "nativeDestructor", "(J)V", (void*)Interpolator_destructor },
78 { "nativeReset", "(JII)V", (void*)Interpolator_reset },
79 { "nativeSetKeyFrame", "(JII[F[F)V", (void*)Interpolator_setKeyFrame },
80 { "nativeSetRepeatMirror", "(JFZ)V", (void*)Interpolator_setRepeatMirror },
81 { "nativeTimeToValues", "(JI[F)I", (void*)Interpolator_timeToValues }
82 };
83
register_android_graphics_Interpolator(JNIEnv * env)84 int register_android_graphics_Interpolator(JNIEnv* env)
85 {
86 return android::AndroidRuntime::registerNativeMethods(env,
87 "android/graphics/Interpolator",
88 gInterpolatorMethods,
89 SK_ARRAY_COUNT(gInterpolatorMethods));
90 }
91