1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "ui/gfx/android/java_bitmap.h"
7 #include <android/bitmap.h>
9 #include "base/android/jni_string.h"
10 #include "base/logging.h"
11 #include "jni/BitmapHelper_jni.h"
12 #include "skia/ext/image_operations.h"
13 #include "third_party/skia/include/core/SkBitmap.h"
14 #include "ui/gfx/size.h"
16 using base::android::AttachCurrentThread;
20 JavaBitmap::JavaBitmap(jobject bitmap)
23 int err = AndroidBitmap_lockPixels(AttachCurrentThread(), bitmap_, &pixels_);
27 AndroidBitmapInfo info;
28 err = AndroidBitmap_getInfo(AttachCurrentThread(), bitmap_, &info);
30 size_ = gfx::Size(info.width, info.height);
31 format_ = info.format;
32 stride_ = info.stride;
35 JavaBitmap::~JavaBitmap() {
36 int err = AndroidBitmap_unlockPixels(AttachCurrentThread(), bitmap_);
41 bool JavaBitmap::RegisterJavaBitmap(JNIEnv* env) {
42 return RegisterNativesImpl(env);
45 static ScopedJavaLocalRef<jobject> CreateJavaBitmap(int width, int height,
47 return Java_BitmapHelper_createBitmap(AttachCurrentThread(),
48 width, height, is565_config);
51 ScopedJavaLocalRef<jobject> ConvertToJavaBitmap(const SkBitmap* skbitmap) {
53 SkBitmap::Config config = skbitmap->getConfig();
54 DCHECK((config == SkBitmap::kRGB_565_Config) ||
55 (config == SkBitmap::kARGB_8888_Config));
56 // If the Config is not RGB565 it is default i.e ARGB8888
57 ScopedJavaLocalRef<jobject> jbitmap =
58 CreateJavaBitmap(skbitmap->width(), skbitmap->height(),
59 (config == SkBitmap::kRGB_565_Config));
60 SkAutoLockPixels src_lock(*skbitmap);
61 JavaBitmap dst_lock(jbitmap.obj());
62 void* src_pixels = skbitmap->getPixels();
63 void* dst_pixels = dst_lock.pixels();
64 memcpy(dst_pixels, src_pixels, skbitmap->getSize());
69 SkBitmap CreateSkBitmapFromJavaBitmap(JavaBitmap& jbitmap) {
70 DCHECK_EQ(jbitmap.format(), ANDROID_BITMAP_FORMAT_RGBA_8888);
72 gfx::Size src_size = jbitmap.size();
75 skbitmap.setConfig(SkBitmap::kARGB_8888_Config,
79 skbitmap.allocPixels();
80 SkAutoLockPixels dst_lock(skbitmap);
82 void* src_pixels = jbitmap.pixels();
83 void* dst_pixels = skbitmap.getPixels();
85 memcpy(dst_pixels, src_pixels, skbitmap.getSize());
90 SkBitmap CreateSkBitmapFromResource(const char* name, gfx::Size size) {
91 DCHECK(!size.IsEmpty());
92 JNIEnv* env = AttachCurrentThread();
93 ScopedJavaLocalRef<jstring> jname(env, env->NewStringUTF(name));
94 ScopedJavaLocalRef<jobject> jobj(Java_BitmapHelper_decodeDrawableResource(
95 env, jname.obj(), size.width(), size.height()));
99 JavaBitmap jbitmap(jobj.obj());
100 SkBitmap bitmap = CreateSkBitmapFromJavaBitmap(jbitmap);
101 return skia::ImageOperations::Resize(
102 bitmap, skia::ImageOperations::RESIZE_BOX, size.width(), size.height());