1 #include "GraphicsJNI.h" 2 #include "SkMaskFilter.h" 3 #include "SkBlurMask.h" 4 #include "SkBlurMaskFilter.h" 5 #include "SkTableMaskFilter.h" 6 7 #include "core_jni_helpers.h" 8 9 #include <jni.h> 10 11 static void ThrowIAE_IfNull(JNIEnv* env, void* ptr) { 12 if (NULL == ptr) { 13 doThrowIAE(env); 14 } 15 } 16 17 class SkMaskFilterGlue { 18 public: 19 static void destructor(JNIEnv* env, jobject, jlong filterHandle) { 20 SkMaskFilter* filter = reinterpret_cast<SkMaskFilter *>(filterHandle); 21 SkSafeUnref(filter); 22 } 23 24 static jlong createBlur(JNIEnv* env, jobject, jfloat radius, jint blurStyle) { 25 SkScalar sigma = SkBlurMask::ConvertRadiusToSigma(radius); 26 SkMaskFilter* filter = SkBlurMaskFilter::Create((SkBlurStyle)blurStyle, sigma); 27 ThrowIAE_IfNull(env, filter); 28 return reinterpret_cast<jlong>(filter); 29 } 30 31 static jlong createEmboss(JNIEnv* env, jobject, jfloatArray dirArray, jfloat ambient, jfloat specular, jfloat radius) { 32 SkScalar direction[3]; 33 34 AutoJavaFloatArray autoDir(env, dirArray, 3); 35 float* values = autoDir.ptr(); 36 for (int i = 0; i < 3; i++) { 37 direction[i] = values[i]; 38 } 39 40 SkScalar sigma = SkBlurMask::ConvertRadiusToSigma(radius); 41 SkMaskFilter* filter = SkBlurMaskFilter::CreateEmboss(sigma, 42 direction, ambient, specular); 43 ThrowIAE_IfNull(env, filter); 44 return reinterpret_cast<jlong>(filter); 45 } 46 47 static jlong createTable(JNIEnv* env, jobject, jbyteArray jtable) { 48 AutoJavaByteArray autoTable(env, jtable, 256); 49 SkMaskFilter* filter = SkTableMaskFilter::Create((const uint8_t*)autoTable.ptr()); 50 return reinterpret_cast<jlong>(filter); 51 } 52 53 static jlong createClipTable(JNIEnv* env, jobject, jint min, jint max) { 54 SkMaskFilter* filter = SkTableMaskFilter::CreateClip(min, max); 55 return reinterpret_cast<jlong>(filter); 56 } 57 58 static jlong createGammaTable(JNIEnv* env, jobject, jfloat gamma) { 59 SkMaskFilter* filter = SkTableMaskFilter::CreateGamma(gamma); 60 return reinterpret_cast<jlong>(filter); 61 } 62 }; 63 64 static JNINativeMethod gMaskFilterMethods[] = { 65 { "nativeDestructor", "(J)V", (void*)SkMaskFilterGlue::destructor } 66 }; 67 68 static JNINativeMethod gBlurMaskFilterMethods[] = { 69 { "nativeConstructor", "(FI)J", (void*)SkMaskFilterGlue::createBlur } 70 }; 71 72 static JNINativeMethod gEmbossMaskFilterMethods[] = { 73 { "nativeConstructor", "([FFFF)J", (void*)SkMaskFilterGlue::createEmboss } 74 }; 75 76 static JNINativeMethod gTableMaskFilterMethods[] = { 77 { "nativeNewTable", "([B)J", (void*)SkMaskFilterGlue::createTable }, 78 { "nativeNewClip", "(II)J", (void*)SkMaskFilterGlue::createClipTable }, 79 { "nativeNewGamma", "(F)J", (void*)SkMaskFilterGlue::createGammaTable } 80 }; 81 82 int register_android_graphics_MaskFilter(JNIEnv* env) 83 { 84 android::RegisterMethodsOrDie(env, "android/graphics/MaskFilter", gMaskFilterMethods, 85 NELEM(gMaskFilterMethods)); 86 android::RegisterMethodsOrDie(env, "android/graphics/BlurMaskFilter", gBlurMaskFilterMethods, 87 NELEM(gBlurMaskFilterMethods)); 88 android::RegisterMethodsOrDie(env, "android/graphics/EmbossMaskFilter", 89 gEmbossMaskFilterMethods, NELEM(gEmbossMaskFilterMethods)); 90 android::RegisterMethodsOrDie(env, "android/graphics/TableMaskFilter", gTableMaskFilterMethods, 91 NELEM(gTableMaskFilterMethods)); 92 93 return 0; 94 } 95
