| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <android/bitmap.h> |
| #include <jni.h> |
| |
| #include <cmath> |
| #include <cstdlib> |
| |
| #include "utils.h" |
| #include "_jni.h" |
| |
| using android::apps::photoeditor::utils::LockBitmaps; |
| using android::apps::photoeditor::utils::pixel32_t; |
| using android::apps::photoeditor::utils::UnlockBitmaps; |
| |
| namespace { |
| |
| extern "C" JNIEXPORT void JNICALL Java_com_android_photoeditor_filters_ImageUtils_nativeRedEye( |
| JNIEnv *env, jobject obj, jobject src_bitmap, jobject dst_bitmap, |
| jobjectArray redeye_positions, jfloat radius, jfloat intensity) { |
| pRedEyeType f = (pRedEyeType)JNIFunc[JNI_RedEye].func_ptr; |
| return f(env, obj, src_bitmap, dst_bitmap, redeye_positions, radius, intensity); |
| } |
| |
| extern "C" void RedEye( |
| JNIEnv *env, jobject obj, jobject src_bitmap, jobject dst_bitmap, |
| jobjectArray redeye_positions, jfloat radius, jfloat intensity) { |
| AndroidBitmapInfo src_info; |
| AndroidBitmapInfo dst_info; |
| void* src_pixels; |
| void* dst_pixels; |
| |
| int ret = LockBitmaps( |
| env, src_bitmap, dst_bitmap, &src_info, &dst_info, &src_pixels, &dst_pixels); |
| if (ret < 0) { |
| LOGE("LockBitmaps in RedEye failed, error=%d", ret); |
| return; |
| } |
| |
| memcpy(dst_pixels, src_pixels, src_info.stride * src_info.height); |
| |
| // get the class reference. |
| jclass cls = env->FindClass("android/graphics/PointF"); |
| jfieldID xid = env->GetFieldID(cls, "x", "F"); |
| jfieldID yid = env->GetFieldID(cls, "y", "F"); |
| int eye_number = env->GetArrayLength(redeye_positions); |
| for (int eye = 0; eye < eye_number; eye++) { |
| jobject point_f = env->GetObjectArrayElement(redeye_positions, eye); |
| float focus_x = env->GetFloatField(point_f, xid); |
| float focus_y = env->GetFloatField(point_f, yid); |
| if (focus_x < 0.0 || focus_x > 1.0 || focus_y < 0.0 || focus_y > 1.0) { |
| // did not tap on the picture |
| continue; |
| } |
| |
| float x = focus_x * src_info.width; |
| float y = focus_y * src_info.height; |
| uint32_t bound_y = y + radius; |
| if (bound_y > dst_info.height) { |
| bound_y = dst_info.height; |
| } |
| uint32_t start_x = (x > radius) ? x - radius: 0; |
| uint32_t bound_x = x + radius; |
| if (bound_x > dst_info.width) { |
| bound_x = dst_info.width; |
| } |
| uint32_t dst_y = (y > radius) ? y - radius : 0; |
| for (; dst_y < bound_y; dst_y++) { |
| uint32_t *dst = reinterpret_cast<uint32_t*>( |
| reinterpret_cast<char*>(dst_pixels) + dst_info.stride * dst_y) + start_x; |
| pixel32_t *src = reinterpret_cast<pixel32_t*>( |
| reinterpret_cast<char*>(src_pixels) + src_info.stride * dst_y) + start_x; |
| for (uint32_t dst_x = start_x; dst_x < bound_x; dst_x++) { |
| if (hypotf(dst_x - x, dst_y - y) <= radius) { |
| int32_t red = src->rgba8[0]; |
| int32_t green = src->rgba8[1]; |
| int32_t blue = src->rgba8[2]; |
| int32_t alpha = src->rgba8[3]; |
| |
| float redIntensity = static_cast<float>(red) / (green + blue); |
| if (redIntensity > intensity) { |
| red = (green + blue) / 2.0f; |
| *dst = alpha << 24 | (blue << 16) | (green << 8) | red; |
| } |
| } |
| dst++; |
| src++; |
| } // dst_x |
| } // dst_y |
| } |
| |
| UnlockBitmaps(env, src_bitmap, dst_bitmap); |
| } |
| |
| } // namespace |