1 /* 2 * Copyright (C) 2009 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 #ifndef ANDROID_BITMAP_H 18 #define ANDROID_BITMAP_H 19 20 #include <stdint.h> 21 #include <jni.h> 22 23 #ifdef __cplusplus 24 extern "C" { 25 #endif 26 27 #define ANDROID_BITMAP_RESULT_SUCCESS 0 28 #define ANDROID_BITMAP_RESULT_BAD_PARAMETER -1 29 #define ANDROID_BITMAP_RESULT_JNI_EXCEPTION -2 30 #define ANDROID_BITMAP_RESULT_ALLOCATION_FAILED -3 31 32 /* Backward compatibility: this macro used to be misspelled. */ 33 #define ANDROID_BITMAP_RESUT_SUCCESS ANDROID_BITMAP_RESULT_SUCCESS 34 35 enum AndroidBitmapFormat { 36 ANDROID_BITMAP_FORMAT_NONE = 0, 37 ANDROID_BITMAP_FORMAT_RGBA_8888 = 1, 38 ANDROID_BITMAP_FORMAT_RGB_565 = 4, 39 ANDROID_BITMAP_FORMAT_RGBA_4444 = 7, 40 ANDROID_BITMAP_FORMAT_A_8 = 8, 41 }; 42 43 typedef struct { 44 uint32_t width; 45 uint32_t height; 46 uint32_t stride; 47 int32_t format; 48 uint32_t flags; // 0 for now 49 } AndroidBitmapInfo; 50 51 /** 52 * Given a java bitmap object, fill out the AndroidBitmap struct for it. 53 * If the call fails, the info parameter will be ignored 54 */ 55 int AndroidBitmap_getInfo(JNIEnv* env, jobject jbitmap, 56 AndroidBitmapInfo* info); 57 58 /** 59 * Given a java bitmap object, attempt to lock the pixel address. 60 * Locking will ensure that the memory for the pixels will not move 61 * until the unlockPixels call, and ensure that, if the pixels had been 62 * previously purged, they will have been restored. 63 * 64 * If this call succeeds, it must be balanced by a call to 65 * AndroidBitmap_unlockPixels, after which time the address of the pixels should 66 * no longer be used. 67 * 68 * If this succeeds, *addrPtr will be set to the pixel address. If the call 69 * fails, addrPtr will be ignored. 70 */ 71 int AndroidBitmap_lockPixels(JNIEnv* env, jobject jbitmap, void** addrPtr); 72 73 /** 74 * Call this to balanace a successful call to AndroidBitmap_lockPixels 75 */ 76 int AndroidBitmap_unlockPixels(JNIEnv* env, jobject jbitmap); 77 78 #ifdef __cplusplus 79 } 80 #endif 81 82 #endif 83