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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 "Debug.h"
     23 #include "Patch.h"
     24 
     25 namespace android {
     26 namespace uirenderer {
     27 
     28 ///////////////////////////////////////////////////////////////////////////////
     29 // Defines
     30 ///////////////////////////////////////////////////////////////////////////////
     31 
     32 // Debug
     33 #if DEBUG_PATCHES
     34     #define PATCH_LOGD(...) ALOGD(__VA_ARGS__)
     35 #else
     36     #define PATCH_LOGD(...)
     37 #endif
     38 
     39 ///////////////////////////////////////////////////////////////////////////////
     40 // Cache
     41 ///////////////////////////////////////////////////////////////////////////////
     42 
     43 class PatchCache {
     44 public:
     45     PatchCache();
     46     PatchCache(uint32_t maxCapacity);
     47     ~PatchCache();
     48 
     49     Patch* get(const uint32_t bitmapWidth, const uint32_t bitmapHeight,
     50             const float pixelWidth, const float pixelHeight,
     51             const int32_t* xDivs, const int32_t* yDivs, const uint32_t* colors,
     52             const uint32_t width, const uint32_t height, const int8_t numColors);
     53     void clear();
     54 
     55     uint32_t getSize() const {
     56         return mCache.size();
     57     }
     58 
     59     uint32_t getMaxSize() const {
     60         return mMaxEntries;
     61     }
     62 
     63 private:
     64     /**
     65      * Description of a patch.
     66      */
     67     struct PatchDescription {
     68         PatchDescription(): bitmapWidth(0), bitmapHeight(0), pixelWidth(0), pixelHeight(0),
     69                 xCount(0), yCount(0), emptyCount(0), colorKey(0) {
     70         }
     71 
     72         PatchDescription(const uint32_t bitmapWidth, const uint32_t bitmapHeight,
     73                 const float pixelWidth, const float pixelHeight,
     74                 const uint32_t xCount, const uint32_t yCount,
     75                 const int8_t emptyCount, const uint32_t colorKey):
     76                 bitmapWidth(bitmapWidth), bitmapHeight(bitmapHeight),
     77                 pixelWidth(pixelWidth), pixelHeight(pixelHeight),
     78                 xCount(xCount), yCount(yCount),
     79                 emptyCount(emptyCount), colorKey(colorKey) {
     80         }
     81 
     82         static int compare(const PatchDescription& lhs, const PatchDescription& rhs);
     83 
     84         bool operator==(const PatchDescription& other) const {
     85             return compare(*this, other) == 0;
     86         }
     87 
     88         bool operator!=(const PatchDescription& other) const {
     89             return compare(*this, other) != 0;
     90         }
     91 
     92         friend inline int strictly_order_type(const PatchDescription& lhs,
     93                 const PatchDescription& rhs) {
     94             return PatchDescription::compare(lhs, rhs) < 0;
     95         }
     96 
     97         friend inline int compare_type(const PatchDescription& lhs,
     98                 const PatchDescription& rhs) {
     99             return PatchDescription::compare(lhs, rhs);
    100         }
    101 
    102     private:
    103         uint32_t bitmapWidth;
    104         uint32_t 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