ae2e8b4891
Bug: 18928352 Also fix an issue around re-configure not properly handling mPinnedCount in android::Bitmap Change-Id: I1815b121f1474ad931060771bb1d52ef31d2aac7
112 lines
3.5 KiB
C++
112 lines
3.5 KiB
C++
/*
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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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#include <android/bitmap.h>
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunused-parameter"
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#include <GraphicsJNI.h>
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#pragma GCC diagnostic pop
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int AndroidBitmap_getInfo(JNIEnv* env, jobject jbitmap,
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AndroidBitmapInfo* info) {
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if (NULL == env || NULL == jbitmap) {
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return ANDROID_BITMAP_RESULT_BAD_PARAMETER;
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}
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SkBitmap bm;
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GraphicsJNI::getSkBitmap(env, jbitmap, &bm);
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if (info) {
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info->width = bm.width();
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info->height = bm.height();
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info->stride = bm.rowBytes();
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info->flags = 0;
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switch (bm.colorType()) {
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case kN32_SkColorType:
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info->format = ANDROID_BITMAP_FORMAT_RGBA_8888;
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break;
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case kRGB_565_SkColorType:
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info->format = ANDROID_BITMAP_FORMAT_RGB_565;
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break;
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case kARGB_4444_SkColorType:
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info->format = ANDROID_BITMAP_FORMAT_RGBA_4444;
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break;
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case kAlpha_8_SkColorType:
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info->format = ANDROID_BITMAP_FORMAT_A_8;
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break;
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default:
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info->format = ANDROID_BITMAP_FORMAT_NONE;
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break;
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}
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}
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return ANDROID_BITMAP_RESULT_SUCCESS;
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}
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int AndroidBitmap_lockPixels(JNIEnv* env, jobject jbitmap, void** addrPtr) {
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if (NULL == env || NULL == jbitmap) {
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return ANDROID_BITMAP_RESULT_BAD_PARAMETER;
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}
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SkPixelRef* pixelRef = GraphicsJNI::refSkPixelRef(env, jbitmap);
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if (!pixelRef) {
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return ANDROID_BITMAP_RESULT_JNI_EXCEPTION;
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}
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pixelRef->lockPixels();
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void* addr = pixelRef->pixels();
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if (NULL == addr) {
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pixelRef->unlockPixels();
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pixelRef->unref();
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return ANDROID_BITMAP_RESULT_ALLOCATION_FAILED;
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}
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if (addrPtr) {
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*addrPtr = addr;
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}
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return ANDROID_BITMAP_RESULT_SUCCESS;
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}
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int AndroidBitmap_unlockPixels(JNIEnv* env, jobject jbitmap) {
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if (NULL == env || NULL == jbitmap) {
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return ANDROID_BITMAP_RESULT_BAD_PARAMETER;
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}
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SkPixelRef* pixelRef = GraphicsJNI::refSkPixelRef(env, jbitmap);
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if (!pixelRef) {
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return ANDROID_BITMAP_RESULT_JNI_EXCEPTION;
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}
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// notifyPixelsChanged() needs be called to apply writes to GL-backed
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// bitmaps. Note that this will slow down read-only accesses to the
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// bitmaps, but the NDK methods are primarily intended to be used for
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// writes.
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pixelRef->notifyPixelsChanged();
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pixelRef->unlockPixels();
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// Awkward in that we need to double-unref as the call to get the SkPixelRef
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// did a ref(), so we need to unref() for the local ref and for the previous
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// AndroidBitmap_lockPixels(). However this keeps GraphicsJNI a bit safer
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// if others start using it without knowing about android::Bitmap's "fun"
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// ref counting mechanism(s).
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pixelRef->unref();
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pixelRef->unref();
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return ANDROID_BITMAP_RESULT_SUCCESS;
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}
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