80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
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/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_BITMAP_H
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#define ANDROID_BITMAP_H
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#include <stdint.h>
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#include <jni.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define ANDROID_BITMAP_RESUT_SUCCESS 0
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#define ANDROID_BITMAP_RESULT_BAD_PARAMETER -1
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#define ANDROID_BITMAP_RESULT_JNI_EXCEPTION -2
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#define ANDROID_BITMAP_RESULT_ALLOCATION_FAILED -3
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enum AndroidBitmapFormat {
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ANDROID_BITMAP_FORMAT_NONE = 0,
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ANDROID_BITMAP_FORMAT_RGBA_8888 = 1,
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ANDROID_BITMAP_FORMAT_RGB_565 = 4,
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ANDROID_BITMAP_FORMAT_RGBA_4444 = 7,
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ANDROID_BITMAP_FORMAT_A_8 = 8,
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};
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typedef struct {
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uint32_t width;
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uint32_t height;
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uint32_t stride;
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int32_t format;
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uint32_t flags; // 0 for now
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} AndroidBitmapInfo;
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/**
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* Given a java bitmap object, fill out the AndroidBitmap struct for it.
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* If the call fails, the info parameter will be ignored
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*/
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int AndroidBitmap_getInfo(JNIEnv* env, jobject jbitmap,
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AndroidBitmapInfo* info);
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/**
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* Given a java bitmap object, attempt to lock the pixel address.
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* Locking will ensure that the memory for the pixels will not move
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* until the unlockPixels call, and ensure that, if the pixels had been
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* previously purged, they will have been restored.
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*
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* If this call succeeds, it must be balanced by a call to
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* AndroidBitmap_unlockPixels, after which time the address of the pixels should
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* no longer be used.
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*
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* If this succeeds, *addrPtr will be set to the pixel address. If the call
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* fails, addrPtr will be ignored.
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*/
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int AndroidBitmap_lockPixels(JNIEnv* env, jobject jbitmap, void** addrPtr);
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/**
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* Call this to balanace a successful call to AndroidBitmap_lockPixels
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*/
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int AndroidBitmap_unlockPixels(JNIEnv* env, jobject jbitmap);
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#ifdef __cplusplus
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}
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#endif
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#endif
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