PatchCache.cpp revision 2728f961614a385df1f056fc24803a9f65c90fab
1/* 2 * Copyright (C) 2010 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#define LOG_TAG "OpenGLRenderer" 18 19#include <utils/Log.h> 20#include <utils/ResourceTypes.h> 21 22#include "PatchCache.h" 23#include "Properties.h" 24 25namespace android { 26namespace uirenderer { 27 28/////////////////////////////////////////////////////////////////////////////// 29// Constructors/destructor 30/////////////////////////////////////////////////////////////////////////////// 31 32PatchCache::PatchCache(): mMaxEntries(DEFAULT_PATCH_CACHE_SIZE) { 33} 34 35PatchCache::PatchCache(uint32_t maxEntries): mMaxEntries(maxEntries) { 36} 37 38PatchCache::~PatchCache() { 39 clear(); 40} 41 42/////////////////////////////////////////////////////////////////////////////// 43// Caching 44/////////////////////////////////////////////////////////////////////////////// 45 46void PatchCache::clear() { 47 size_t count = mCache.size(); 48 for (int i = 0; i < count; i++) { 49 delete mCache.valueAt(i); 50 } 51 mCache.clear(); 52} 53 54Patch* PatchCache::get(const float bitmapWidth, const float bitmapHeight, 55 const float pixelWidth, const float pixelHeight, 56 const int32_t* xDivs, const int32_t* yDivs, 57 const uint32_t width, const uint32_t height) { 58 59 const PatchDescription description(bitmapWidth, bitmapHeight, 60 pixelWidth, pixelHeight, width, height); 61 62 ssize_t index = mCache.indexOfKey(description); 63 Patch* mesh = NULL; 64 if (index >= 0) { 65 mesh = mCache.valueAt(index); 66 } 67 68 if (!mesh) { 69 PATCH_LOGD("Creating new patch mesh, w=%d h=%d", width, height); 70 71 mesh = new Patch(width, height); 72 mesh->updateVertices(bitmapWidth, bitmapHeight, 0.0f, 0.0f, 73 pixelWidth, pixelHeight, xDivs, yDivs, width, height); 74 75 if (mCache.size() >= mMaxEntries) { 76 delete mCache.valueAt(0); 77 mCache.removeItemsAt(0, 1); 78 } 79 80 mCache.add(description, mesh); 81 } 82 83 return mesh; 84} 85 86}; // namespace uirenderer 87}; // namespace android 88