1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <android/bitmap.h> 18 #include <jni.h> 19 20 #include "utils.h" 21 #include "_jni.h" 22 23 using android::apps::photoeditor::utils::LockBitmaps; 24 using android::apps::photoeditor::utils::pixel32_t; 25 using android::apps::photoeditor::utils::UnlockBitmaps; 26 27 namespace { 28 29 extern "C" JNIEXPORT void JNICALL Java_com_android_photoeditor_filters_ImageUtils_nativeDuotone( 30 JNIEnv *env, jobject obj, jobject src_bitmap, jobject dst_bitmap, jint color1, jint color2) { 31 pDuotoneType f = (pDuotoneType)JNIFunc[JNI_Duotone].func_ptr; 32 return f(env, obj, src_bitmap, dst_bitmap, color1, color2); 33 } 34 35 extern "C" void Duotone( 36 JNIEnv *env, jobject obj, jobject src_bitmap, jobject dst_bitmap, jint color1, jint color2) { 37 AndroidBitmapInfo src_info; 38 AndroidBitmapInfo dst_info; 39 void* src_pixels; 40 void* dst_pixels; 41 42 int ret = LockBitmaps( 43 env, src_bitmap, dst_bitmap, &src_info, &dst_info, &src_pixels, &dst_pixels); 44 if (ret < 0) { 45 LOGE("LockBitmaps in Duotone failed, error=%d", ret); 46 return; 47 } 48 49 uint8_t red1 = static_cast<uint8_t>(color1 >> 16) & 0xff; 50 uint8_t green1 = static_cast<uint8_t>(color1 >> 8) & 0xff; 51 uint8_t blue1 = static_cast<uint8_t>(color1) & 0xff; 52 53 uint8_t red2 = (uint8_t)(color2 >> 16) & 0xff; 54 uint8_t green2 = (uint8_t)(color2 >> 8) & 0xff; 55 uint8_t blue2 = (uint8_t)color2 & 0xff; 56 57 int r_delta = red2 - red1; 58 int g_delta = green2 - green1; 59 int b_delta = blue2 - blue1; 60 61 const uint32_t kEnergyLevels = 255 * 3 + 1; 62 uint8_t r_table[kEnergyLevels]; 63 uint8_t g_table[kEnergyLevels]; 64 uint8_t b_table[kEnergyLevels]; 65 for (uint32_t energy = 0; energy < kEnergyLevels; energy++) { 66 r_table[energy] = (uint8_t)(red1 + energy * r_delta / kEnergyLevels); 67 g_table[energy] = (uint8_t)(green1 + energy * g_delta / kEnergyLevels); 68 b_table[energy] = (uint8_t)(blue1 + energy * b_delta / kEnergyLevels); 69 } 70 71 for (uint32_t scan_line = 0; scan_line < dst_info.height; scan_line++) { 72 uint32_t* dst = reinterpret_cast<uint32_t*>(dst_pixels); 73 pixel32_t* src = reinterpret_cast<pixel32_t*>(src_pixels); 74 pixel32_t* src_line_end = src + src_info.width; 75 76 while (src < src_line_end) { 77 uint32_t energy = src->rgba8[0] + src->rgba8[1] + src->rgba8[2]; 78 79 int dst_red = r_table[energy]; 80 int dst_green = g_table[energy]; 81 int dst_blue = b_table[energy]; 82 83 *dst = (src->rgba8[3] << 24) | (dst_blue << 16) | (dst_green << 8) | dst_red; 84 dst++; 85 src++; 86 } 87 dst_pixels = reinterpret_cast<char*>(dst_pixels) + dst_info.stride; 88 src_pixels = reinterpret_cast<char*>(src_pixels) + src_info.stride; 89 } 90 91 UnlockBitmaps(env, src_bitmap, dst_bitmap); 92 } 93 94 } // namespace 95
