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      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 #ifndef ANDROID_HWUI_PATCH_CACHE_H
     18 #define ANDROID_HWUI_PATCH_CACHE_H
     19 
     20 #include <utils/KeyedVector.h>
     21 
     22 #include "utils/Compare.h"
     23 #include "Debug.h"
     24 #include "Patch.h"
     25 
     26 namespace android {
     27 namespace uirenderer {
     28 
     29 ///////////////////////////////////////////////////////////////////////////////
     30 // Defines
     31 ///////////////////////////////////////////////////////////////////////////////
     32 
     33 // Debug
     34 #if DEBUG_PATCHES
     35     #define PATCH_LOGD(...) LOGD(__VA_ARGS__)
     36 #else
     37     #define PATCH_LOGD(...)
     38 #endif
     39 
     40 ///////////////////////////////////////////////////////////////////////////////
     41 // Cache
     42 ///////////////////////////////////////////////////////////////////////////////
     43 
     44 class PatchCache {
     45 public:
     46     PatchCache();
     47     PatchCache(uint32_t maxCapacity);
     48     ~PatchCache();
     49 
     50     Patch* get(const float bitmapWidth, const float bitmapHeight,
     51             const float pixelWidth, const float pixelHeight,
     52             const int32_t* xDivs, const int32_t* yDivs, const uint32_t* colors,
     53             const uint32_t width, const uint32_t height, const int8_t numColors);
     54     void clear();
     55 
     56     uint32_t getSize() const {
     57         return mCache.size();
     58     }
     59 
     60     uint32_t getMaxSize() const {
     61         return mMaxEntries;
     62     }
     63 
     64 private:
     65     /**
     66      * Description of a patch.
     67      */
     68     struct PatchDescription {
     69         PatchDescription(): bitmapWidth(0), bitmapHeight(0), pixelWidth(0), pixelHeight(0),
     70                 xCount(0), yCount(0), emptyCount(0), colorKey(0) {
     71         }
     72 
     73         PatchDescription(const float bitmapWidth, const float bitmapHeight,
     74                 const float pixelWidth, const float pixelHeight,
     75                 const uint32_t xCount, const uint32_t yCount,
     76                 const int8_t emptyCount, const uint32_t colorKey):
     77                 bitmapWidth(bitmapWidth), bitmapHeight(bitmapHeight),
     78                 pixelWidth(pixelWidth), pixelHeight(pixelHeight),
     79                 xCount(xCount), yCount(yCount),
     80                 emptyCount(emptyCount), colorKey(colorKey) {
     81         }
     82 
     83         bool operator<(const PatchDescription& rhs) const {
     84             LTE_FLOAT(bitmapWidth) {
     85                 LTE_FLOAT(bitmapHeight) {
     86                     LTE_FLOAT(pixelWidth) {
     87                         LTE_FLOAT(pixelHeight) {
     88                             LTE_INT(xCount) {
     89                                 LTE_INT(yCount) {
     90                                     LTE_INT(emptyCount) {
     91                                         LTE_INT(colorKey) return false;
     92                                     }
     93                                 }
     94                             }
     95                         }
     96                     }
     97                 }
     98             }
     99             return false;
    100         }
    101 
    102     private:
    103         float bitmapWidth;
    104         float bitmapHeight;
    105         float pixelWidth;
    106         float pixelHeight;
    107         uint32_t xCount;
    108         uint32_t yCount;
    109         int8_t emptyCount;
    110         uint32_t colorKey;
    111 
    112     }; // struct PatchDescription
    113 
    114     uint32_t mMaxEntries;
    115     KeyedVector<PatchDescription, Patch*> mCache;
    116 
    117 }; // class PatchCache
    118 
    119 }; // namespace uirenderer
    120 }; // namespace android
    121 
    122 #endif // ANDROID_HWUI_PATCH_CACHE_H
    123