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  • 大小: 360KB
    文件類型: .rar
    金幣: 1
    下載: 0 次
    發(fā)布日期: 2021-01-07
  • 語言: C/C++
  • 標(biāo)簽: linux??jpg??bmp??

資源簡介

centos7下jpg圖像轉(zhuǎn)bmp,調(diào)用的是libjpeg-turbo庫,代碼齊全。解析為bmp時,bmp需要4字節(jié)對齊,這里我的做法是,假如一個jpg的tup寬度是157,我這邊是將圖片擴展為160個像素。代碼語言C++

資源截圖

代碼片段和文件信息

#include?“ParseJpeg.h“
#define?MAX_IMAGE_SIZE??20?*?1024?*?1024?//針對1920*1080的圖像

#pragma?pack(2)
typedef?struct?BITMAPFILEHEADER?{
????u_int16_t?bfType;
????u_int32_t?bfSize;
????u_int16_t?bfReserved1;
????u_int16_t?bfReserved2;
????u_int32_t?bfOffBits;
}?BITMAPFILEHEADER;

typedef?struct?BITMAPINFOHEADER?{
????u_int32_t?biSize;
????u_int32_t?biWidth;
????u_int32_t?biHeight;
????u_int16_t?biPlanes;
????u_int16_t?biBitCount;
????u_int32_t?biCompression;
????u_int32_t?biSizeImage;
????u_int32_t?biXPelsPerMeter;
????u_int32_t?biYPelsPerMeter;
????u_int32_t?biClrUsed;
????u_int32_t?biClrImportant;
}?BITMAPINFODEADER;


ParseJpeg::ParseJpeg()
{//主要是為了防止頻繁分配內(nèi)存
????m_bHasHeader?=?false;
????m_nLenHeader?=?0;

????m_pJpgBuffer?=?NULL;
????while(!m_pJpgBuffer){
??

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????2166??2018-11-22?14:01??libjpeg\include\jconfig.h

?????文件??????15177??2018-11-22?14:02??libjpeg\include\jerror.h

?????文件??????15143??2018-11-22?14:01??libjpeg\include\jmorecfg.h

?????文件??????50281??2018-11-22?14:02??libjpeg\include\jpeglib.h

?????文件??????73889??2018-11-22?14:02??libjpeg\include\turbojpeg.h

?????文件?????841694??2018-11-22?14:02??libjpeg\lib\libjpeg.a

?????文件????????350??2018-11-22?14:01??libjpeg\Makefile

?????文件??????10406??2018-11-22?14:01??libjpeg\ParseJpeg.cpp

?????文件???????1393??2018-11-22?14:01??libjpeg\ParseJpeg.h

?????文件???????9152??2018-11-22?14:01??libjpeg\ParseJpeg.o

?????文件?????668304??2018-11-22?14:01??libjpeg\test

?????文件???????1369??2018-11-22?14:01??libjpeg\test.cpp

?????文件???????3592??2018-11-22?14:01??libjpeg\test.o

?????目錄??????????0??2018-11-22?14:02??libjpeg\include

?????目錄??????????0??2018-11-22?14:02??libjpeg\lib

?????目錄??????????0??2018-11-22?14:02??libjpeg

-----------?---------??----------?-----??----

??????????????1692916????????????????????16


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