1 /* 2 * Copyright (C) 2015 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 #ifndef BITMAP_H_ 17 #define BITMAP_H_ 18 19 #include <jni.h> 20 #include <android/bitmap.h> 21 #include <SkBitmap.h> 22 #include <SkImageInfo.h> 23 24 namespace android { 25 26 class Bitmap; 27 28 namespace bitmap { 29 30 enum BitmapCreateFlags { 31 kBitmapCreateFlag_None = 0x0, 32 kBitmapCreateFlag_Mutable = 0x1, 33 kBitmapCreateFlag_Premultiplied = 0x2, 34 }; 35 36 jobject createBitmap(JNIEnv* env, Bitmap* bitmap, 37 int bitmapCreateFlags, jbyteArray ninePatchChunk = NULL, 38 jobject ninePatchInsets = NULL, int density = -1); 39 40 41 void toSkBitmap(jlong bitmapHandle, SkBitmap* outBitmap); 42 43 Bitmap& toBitmap(JNIEnv* env, jobject bitmap); 44 Bitmap& toBitmap(JNIEnv* env, jlong bitmapHandle); 45 46 // NDK access 47 void imageInfo(JNIEnv* env, jobject bitmap, AndroidBitmapInfo* info); 48 // Returns a pointer to the pixels or nullptr if the bitmap is not valid 49 void* lockPixels(JNIEnv* env, jobject bitmap); 50 // Returns true if unlocked, false if the bitmap is no longer valid (destroyed) 51 bool unlockPixels(JNIEnv* env, jobject bitmap); 52 53 /** Reinitialize a bitmap. bitmap must already have its SkAlphaType set in 54 sync with isPremultiplied 55 */ 56 void reinitBitmap(JNIEnv* env, jobject javaBitmap, const SkImageInfo& info, 57 bool isPremultiplied); 58 59 int getBitmapAllocationByteCount(JNIEnv* env, jobject javaBitmap); 60 61 } // namespace bitmap 62 63 } // namespace android 64 65 #endif /* BITMAP_H_ */ 66
