mirror of
https://github.com/openharmony/graphic_surface.git
synced 2026-07-01 22:44:00 -04:00
wenjun
82 lines
2.2 KiB
C++
Executable File
82 lines
2.2 KiB
C++
Executable File
/*
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* Copyright (c) 2020 Huawei Device Co., Ltd.
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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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#ifndef GRAPHIC_LITE_FILE_IMG_DECODER_H
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#define GRAPHIC_LITE_FILE_IMG_DECODER_H
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#include "draw/draw_image.h"
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#include "draw/draw_utils.h"
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namespace OHOS {
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constexpr uint8_t BYTE_TO_BIT_SHIFT = 3;
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constexpr uint8_t ONE_BIT_LEN_IN_BIT = 1;
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constexpr uint8_t TWO_BIT_LEN_IN_BIT = 2;
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constexpr uint8_t FOUR_BIT_LEN_IN_BIT = 4;
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constexpr uint8_t BYTE_LEN_IN_BIT = 8;
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enum class RetCode {
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OK,
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FAIL,
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};
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class FileImgDecoder : public HeapBase {
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public:
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static FileImgDecoder& GetInstance()
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{
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static FileImgDecoder instance;
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return instance;
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}
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struct ImgResDsc {
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FileImgDecoder* decoder;
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const char* path;
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ImageInfo imgInfo;
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uint32_t timeToOpen;
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int32_t fd;
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ImageSrcType srcType;
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bool inCache_;
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};
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RetCode Open(ImgResDsc& dsc);
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RetCode Close(ImgResDsc& dsc);
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RetCode GetHeader(ImgResDsc& dsc);
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RetCode ReadLine(ImgResDsc& dsc, const Point& start, int16_t len, uint8_t* buf);
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RetCode ReadToCache(ImgResDsc& dsc);
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private:
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FileImgDecoder() {};
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~FileImgDecoder() {};
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bool IsImgValidMode(uint8_t colorMode)
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{
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if (colorMode == RGB565 || colorMode == RGB888 || colorMode == ARGB8888) {
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return true;
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} else {
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return false;
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}
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}
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RetCode ReadLineTrueColor(ImgResDsc& dsc, const Point& start, int16_t len, uint8_t* buf);
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FileImgDecoder(const FileImgDecoder&) = delete;
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FileImgDecoder& operator=(const FileImgDecoder&) = delete;
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FileImgDecoder(FileImgDecoder&&) = delete;
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FileImgDecoder& operator=(FileImgDecoder&&) = delete;
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};
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}
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#endif |