| /* |
| * Copyright 2021 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include <jni.h> |
| |
| #include "include/core/SkData.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkM44.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkShader.h" |
| #include "include/core/SkTileMode.h" |
| #include "include/private/base/SkTo.h" |
| #include "modules/jetski/src/Utils.h" |
| |
| namespace { |
| |
| jlong Image_Create(JNIEnv* env, jobject, jbyteArray jdata) { |
| auto size = env->GetArrayLength(jdata); |
| auto* data = env->GetByteArrayElements(jdata, nullptr); |
| auto image = SkImage::MakeFromEncoded(SkData::MakeWithCopy(data, SkToSizeT(size))); |
| |
| env->ReleaseByteArrayElements(jdata, data, 0); |
| |
| return reinterpret_cast<jlong>(image.release()); |
| } |
| |
| void Image_Release(JNIEnv*, jobject, jlong native_instance) { |
| SkSafeUnref(reinterpret_cast<const SkImage*>(native_instance)); |
| } |
| |
| jint Image_GetWidth(JNIEnv*, jobject, jlong native_instance) { |
| const auto* image = reinterpret_cast<const SkImage*>(native_instance); |
| return image ? image->width() : 0; |
| } |
| |
| jint Image_GetHeight(JNIEnv*, jobject, jlong native_instance) { |
| const auto* image = reinterpret_cast<const SkImage*>(native_instance); |
| return image ? image->height() : 0; |
| } |
| |
| jlong Image_MakeShader(JNIEnv*, jobject, jlong native_instance, jint jtmx, jint jtmy, |
| jint sampling_desc, jfloat sampling_b, jfloat sampling_c, |
| jlong native_matrix) { |
| sk_sp<SkShader> shader; |
| |
| if (const auto* image = reinterpret_cast<const SkImage*>(native_instance)) { |
| const auto tmx = jetski::utils::TileMode(jtmx), |
| tmy = jetski::utils::TileMode(jtmy); |
| const auto sampling = jetski::utils::SamplingOptions(sampling_desc, |
| sampling_b, sampling_c); |
| |
| const auto* lm = reinterpret_cast<const SkM44*>(native_matrix); |
| shader = lm |
| ? image->makeShader(tmx, tmy, sampling, lm->asM33()) |
| : image->makeShader(tmx, tmy, sampling); |
| } |
| |
| return reinterpret_cast<jlong>(shader.release()); |
| } |
| |
| } // namespace |
| |
| int register_jetski_Image(JNIEnv* env) { |
| static const JNINativeMethod methods[] = { |
| {"nCreate" , "([B)J" , reinterpret_cast<void*>(Image_Create) }, |
| {"nRelease" , "(J)V" , reinterpret_cast<void*>(Image_Release) }, |
| |
| {"nGetWidth" , "(J)I" , reinterpret_cast<void*>(Image_GetWidth) }, |
| {"nGetHeight" , "(J)I" , reinterpret_cast<void*>(Image_GetHeight)}, |
| |
| {"nMakeShader", "(JIIIFFJ)J" , reinterpret_cast<void*>(Image_MakeShader)}, |
| }; |
| |
| const auto clazz = env->FindClass("org/skia/jetski/Image"); |
| return clazz |
| ? env->RegisterNatives(clazz, methods, std::size(methods)) |
| : JNI_ERR; |
| } |