| Dan Albert | 287553d | 2017-02-16 10:47:51 -0800 | [diff] [blame] | 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 |