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
Java_com_android_photoeditor_filters_ImageUtils_nativeSepia(JNIEnv * env,jobject obj,jobject src_bitmap,jobject dst_bitmap)29 extern "C" JNIEXPORT void JNICALL Java_com_android_photoeditor_filters_ImageUtils_nativeSepia(
30 JNIEnv *env, jobject obj, jobject src_bitmap, jobject dst_bitmap) {
31 pSepiaType f = (pSepiaType)JNIFunc[JNI_Sepia].func_ptr;
32 return f(env, obj, src_bitmap, dst_bitmap);
33 }
34
Sepia(JNIEnv * env,jobject obj,jobject src_bitmap,jobject dst_bitmap)35 extern "C" void Sepia(
36 JNIEnv *env, jobject obj, jobject src_bitmap, jobject dst_bitmap) {
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 Sepia failed, error=%d", ret);
46 return;
47 }
48
49 for (uint32_t scan_line = 0; scan_line < dst_info.height; scan_line++) {
50 uint32_t* dst = reinterpret_cast<uint32_t*>(dst_pixels);
51 pixel32_t* src = reinterpret_cast<pixel32_t*>(src_pixels);
52 pixel32_t* src_line_end = src + src_info.width;
53 while (src < src_line_end) {
54 int dst_red = (src->rgba8[0] * 805 + src->rgba8[1] * 1575 + src->rgba8[2] * 387) >> 11;
55 int dst_green = (src->rgba8[0] * 715 + src->rgba8[1] * 1405 + src->rgba8[2] * 344) >> 11;
56 int dst_blue = (src->rgba8[0] * 557 + src->rgba8[1] * 1094 + src->rgba8[2] * 268) >> 11;
57
58 if (dst_red > 255) {
59 dst_red = 255;
60 }
61 if (dst_green > 255) {
62 dst_green = 255;
63 }
64 if (dst_blue > 255) {
65 dst_blue = 255;
66 }
67
68 *dst = (src->rgba8[3] << 24) | (dst_blue << 16) | (dst_green << 8) | dst_red;
69 dst++;
70 src++;
71 }
72 dst_pixels = reinterpret_cast<char*>(dst_pixels) + dst_info.stride;
73 src_pixels = reinterpret_cast<char*>(src_pixels) + src_info.stride;
74 }
75
76 UnlockBitmaps(env, src_bitmap, dst_bitmap);
77 }
78
79 } // namespace
80