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.
4
5 #include "ui/gfx/android/java_bitmap.h"
6
7 #include <android/bitmap.h>
8
9 #include "base/android/jni_string.h"
10 #include "base/logging.h"
11 #include "jni/BitmapHelper_jni.h"
12 #include "ui/gfx/size.h"
13
14 using base::android::AttachCurrentThread;
15 using base::android::ConvertUTF8ToJavaString;
16
17 namespace gfx {
18
JavaBitmap(jobject bitmap)19 JavaBitmap::JavaBitmap(jobject bitmap)
20 : bitmap_(bitmap),
21 pixels_(NULL) {
22 int err = AndroidBitmap_lockPixels(AttachCurrentThread(), bitmap_, &pixels_);
23 DCHECK(!err);
24 DCHECK(pixels_);
25
26 AndroidBitmapInfo info;
27 err = AndroidBitmap_getInfo(AttachCurrentThread(), bitmap_, &info);
28 DCHECK(!err);
29 size_ = gfx::Size(info.width, info.height);
30 format_ = info.format;
31 stride_ = info.stride;
32 }
33
~JavaBitmap()34 JavaBitmap::~JavaBitmap() {
35 int err = AndroidBitmap_unlockPixels(AttachCurrentThread(), bitmap_);
36 DCHECK(!err);
37 }
38
39 // static
RegisterJavaBitmap(JNIEnv * env)40 bool JavaBitmap::RegisterJavaBitmap(JNIEnv* env) {
41 return RegisterNativesImpl(env);
42 }
43
SkBitmapConfigToBitmapFormat(SkBitmap::Config bitmap_config)44 static int SkBitmapConfigToBitmapFormat(SkBitmap::Config bitmap_config) {
45 switch (bitmap_config) {
46 case SkBitmap::kA8_Config:
47 return BITMAP_FORMAT_ALPHA_8;
48 case SkBitmap::kARGB_4444_Config:
49 return BITMAP_FORMAT_ARGB_4444;
50 case SkBitmap::kARGB_8888_Config:
51 return BITMAP_FORMAT_ARGB_8888;
52 case SkBitmap::kRGB_565_Config:
53 return BITMAP_FORMAT_RGB_565;
54 case SkBitmap::kNo_Config:
55 default:
56 NOTREACHED();
57 return BITMAP_FORMAT_NO_CONFIG;
58 }
59 }
60
CreateJavaBitmap(int width,int height,SkBitmap::Config bitmap_config)61 ScopedJavaLocalRef<jobject> CreateJavaBitmap(int width,
62 int height,
63 SkBitmap::Config bitmap_config) {
64 DCHECK_GT(width, 0);
65 DCHECK_GT(height, 0);
66 int java_bitmap_config = SkBitmapConfigToBitmapFormat(bitmap_config);
67 return Java_BitmapHelper_createBitmap(
68 AttachCurrentThread(), width, height, java_bitmap_config);
69 }
70
CreateJavaBitmapFromAndroidResource(const char * name,gfx::Size size)71 ScopedJavaLocalRef<jobject> CreateJavaBitmapFromAndroidResource(
72 const char* name,
73 gfx::Size size) {
74 DCHECK(name);
75 DCHECK(!size.IsEmpty());
76 JNIEnv* env = AttachCurrentThread();
77 ScopedJavaLocalRef<jstring> jname(ConvertUTF8ToJavaString(env, name));
78 return Java_BitmapHelper_decodeDrawableResource(
79 env, jname.obj(), size.width(), size.height());
80 }
81
ConvertToJavaBitmap(const SkBitmap * skbitmap)82 ScopedJavaLocalRef<jobject> ConvertToJavaBitmap(const SkBitmap* skbitmap) {
83 DCHECK(skbitmap);
84 DCHECK(!skbitmap->isNull());
85 SkBitmap::Config bitmap_config = skbitmap->config();
86 DCHECK((bitmap_config == SkBitmap::kRGB_565_Config) ||
87 (bitmap_config == SkBitmap::kARGB_8888_Config));
88 ScopedJavaLocalRef<jobject> jbitmap = CreateJavaBitmap(
89 skbitmap->width(), skbitmap->height(), bitmap_config);
90 SkAutoLockPixels src_lock(*skbitmap);
91 JavaBitmap dst_lock(jbitmap.obj());
92 void* src_pixels = skbitmap->getPixels();
93 void* dst_pixels = dst_lock.pixels();
94 memcpy(dst_pixels, src_pixels, skbitmap->getSize());
95
96 return jbitmap;
97 }
98
CreateSkBitmapFromJavaBitmap(const JavaBitmap & jbitmap)99 SkBitmap CreateSkBitmapFromJavaBitmap(const JavaBitmap& jbitmap) {
100 // TODO(jdduke): Convert to DCHECK's when sufficient data has been capture for
101 // crbug.com/341406.
102 CHECK_EQ(jbitmap.format(), ANDROID_BITMAP_FORMAT_RGBA_8888);
103 CHECK(!jbitmap.size().IsEmpty());
104 CHECK_GT(jbitmap.stride(), 0U);
105 CHECK(jbitmap.pixels());
106
107 gfx::Size src_size = jbitmap.size();
108
109 SkBitmap skbitmap;
110 skbitmap.setConfig(SkBitmap::kARGB_8888_Config,
111 src_size.width(),
112 src_size.height(),
113 jbitmap.stride());
114 if (!skbitmap.allocPixels()) {
115 LOG(FATAL) << " Failed to allocate bitmap of size " << src_size.width()
116 << "x" << src_size.height() << " stride=" << jbitmap.stride();
117 }
118 SkAutoLockPixels dst_lock(skbitmap);
119 const void* src_pixels = jbitmap.pixels();
120 void* dst_pixels = skbitmap.getPixels();
121 memcpy(dst_pixels, src_pixels, skbitmap.getSize());
122
123 return skbitmap;
124 }
125
ConvertToSkiaConfig(jobject bitmap_config)126 SkBitmap::Config ConvertToSkiaConfig(jobject bitmap_config) {
127 int jbitmap_config = Java_BitmapHelper_getBitmapFormatForConfig(
128 AttachCurrentThread(), bitmap_config);
129 switch (jbitmap_config) {
130 case BITMAP_FORMAT_ALPHA_8:
131 return SkBitmap::kA8_Config;
132 case BITMAP_FORMAT_ARGB_4444:
133 return SkBitmap::kARGB_4444_Config;
134 case BITMAP_FORMAT_ARGB_8888:
135 return SkBitmap::kARGB_8888_Config;
136 case BITMAP_FORMAT_RGB_565:
137 return SkBitmap::kRGB_565_Config;
138 case BITMAP_FORMAT_NO_CONFIG:
139 default:
140 return SkBitmap::kNo_Config;
141 }
142 }
143
144 } // namespace gfx
145