1 /* 2 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef UI_FONT_ALLOCATOR_H 17 #define UI_FONT_ALLOCATOR_H 18 19 #include <stdint.h> 20 21 #include "font/ui_font_header.h" 22 #include "gfx_utils/graphic_buffer.h" 23 24 namespace OHOS { 25 class UIFontAllocator { 26 struct UI_STRUCT_ALIGN Chunk { 27 uint32_t next; 28 uint32_t prev; 29 bool used; 30 uint32_t reserve; 31 }; 32 33 public: 34 UIFontAllocator(); 35 36 ~UIFontAllocator(); 37 38 void SetRamAddr(uint8_t* ram, uint32_t size); 39 40 void SetMinChunkSize(uint32_t size); 41 42 uint32_t GetSize(void* addr); 43 44 /** 45 * @brief allocate memory 46 * 47 * @param size 48 * @return memory address 49 */ 50 void* Allocate(uint32_t size); 51 52 void Free(void* addr); 53 54 static BufferInfo 55 GetCacheBuffer(uint16_t fontId, uint32_t unicode, ColorMode mode, GlyphNode& glyphNode, bool hasMetric); 56 57 static void RearrangeBitmap(BufferInfo& bufInfo, uint32_t fileSz, bool hasMetric); 58 59 private: 60 void CombineFree(Chunk* cache); 61 62 uint8_t* ram_; 63 uint32_t ramSize_; 64 uint32_t freeSize_; 65 uint32_t minSize_; 66 struct Chunk* end_; 67 struct Chunk* free_; 68 }; 69 } // namespace OHOS 70 #endif /* UI_FONT_ALLOCATOR_H */ 71