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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GFX_ANDROID_JAVA_BITMAP_H_
#define UI_GFX_ANDROID_JAVA_BITMAP_H_
#include <jni.h>
#include <stdint.h>
#include "base/android/scoped_java_ref.h"
#include "base/component_export.h"
#include "base/memory/raw_ptr.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/geometry/size.h"
namespace gfx {
// A Java counterpart will be generated for this enum.
// GENERATED_JAVA_ENUM_PACKAGE: org.chromium.ui.gfx
// The order and values here match AndroidBitmapFormat, as verified
// by static_asserts in java_bitmap.cc.
enum BitmapFormat {
BITMAP_FORMAT_NO_CONFIG = 0,
BITMAP_FORMAT_ARGB_8888 = 1,
BITMAP_FORMAT_RGB_565 = 4,
BITMAP_FORMAT_ARGB_4444 = 7,
BITMAP_FORMAT_ALPHA_8 = 8,
};
// This class wraps a JNI AndroidBitmap object to make it easier to use. It
// handles locking and unlocking of the underlying pixels, along with wrapping
// various JNI methods.
class COMPONENT_EXPORT(GFX) JavaBitmap {
public:
explicit JavaBitmap(const base::android::JavaRef<jobject>& bitmap);
JavaBitmap(const JavaBitmap&) = delete;
JavaBitmap& operator=(const JavaBitmap&) = delete;
~JavaBitmap();
inline void* pixels() { return pixels_; }
inline const void* pixels() const { return pixels_; }
inline const gfx::Size& size() const { return size_; }
inline BitmapFormat format() const { return format_; }
inline uint32_t bytes_per_row() const { return bytes_per_row_; }
inline int byte_count() const { return byte_count_; }
private:
base::android::ScopedJavaGlobalRef<jobject> bitmap_;
raw_ptr<void> pixels_ = nullptr;
gfx::Size size_;
BitmapFormat format_;
uint32_t bytes_per_row_;
int byte_count_;
};
enum class OomBehavior {
kCrashOnOom,
kReturnNullOnOom,
};
// Converts |skbitmap| to a Java-backed bitmap (android.graphics.Bitmap).
// Note: |skbitmap| is assumed to be non-null, non-empty and one of RGBA_8888 or
// RGB_565 formats.
COMPONENT_EXPORT(GFX)
base::android::ScopedJavaLocalRef<jobject> ConvertToJavaBitmap(
const SkBitmap& skbitmap,
OomBehavior reaction = OomBehavior::kCrashOnOom);
// Converts |bitmap| to an SkBitmap of the same size and format.
// Note: |jbitmap| is assumed to be non-null, non-empty and of format RGBA_8888.
COMPONENT_EXPORT(GFX)
SkBitmap CreateSkBitmapFromJavaBitmap(const JavaBitmap& jbitmap);
// Returns a Skia color type value for the requested input java Bitmap.Config.
COMPONENT_EXPORT(GFX)
SkColorType ConvertToSkiaColorType(
const base::android::JavaRef<jobject>& jbitmap_config);
} // namespace gfx
namespace jni_zero {
// Converts |bitmap| to an SkBitmap of the same size and format.
// Note: |j_bitmap| is assumed to be non-null, non-empty and of format
// RGBA_8888.
template <>
COMPONENT_EXPORT(GFX)
SkBitmap FromJniType<SkBitmap>(JNIEnv* env, const JavaRef<jobject>& j_bitmap);
// Converts |skbitmap| to a Java-backed bitmap (android.graphics.Bitmap).
// Note: return nullptr jobject if |skbitmap| is null or empty.
template <>
COMPONENT_EXPORT(GFX)
ScopedJavaLocalRef<jobject> ToJniType<SkBitmap>(JNIEnv* env,
const SkBitmap& skbitmap);
} // namespace jni_zero
#endif // UI_GFX_ANDROID_JAVA_BITMAP_H_
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