74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
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#ifndef BWBMP_H
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#define BWBMP_H
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#include <QString>
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#include <QFileInfo>
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#pragma pack(1) //设定为1字节对齐
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// 位图的调色板
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typedef struct
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{
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unsigned char rgbBlue;
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unsigned char rgbGreen;
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unsigned char rgbRed;
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unsigned char rgbReserved;
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}__attribute__ ((packed)) BmpRgbQuad;
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// 位图文件头
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typedef struct
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{
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unsigned short int identifier; // 类型 一般为 "BM"
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unsigned long int fileSize; // 文件大小
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unsigned long int reserved; // 保留
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unsigned long int bitDatOffset; // 位图数据偏移，一般为 0x3E
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unsigned long int biSize; // 位图信息头大小, 一般为 0x28
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unsigned long int biWidth; // 位图宽度,以像素为单位
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unsigned long int biHeight; // 位图高度,以像素为单位
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unsigned short int biPlanes; // 位图的位面数，必须为1
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unsigned short int biBitPerPixel; // 每个像素的位数, =1, 单色位图; =4, 16色; = 8, 256色; = 24 真彩色
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unsigned long int biCompression; // 位图压缩类型, =0, 不压缩（BI_RGB）; =1, BI_RLE8; = 2, BI_RLE4; = 3 BI_BITFIELDS; = 4, BI_JPEG; = 5, BI_PNG
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unsigned long int biBitmapDatSize;// 位图数据区的大小（字节数）, 必须是4的整数倍
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unsigned long int biHResolution; // 水平分辨率, 像素/米
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unsigned long int biVResolution; // 垂直分辨率, 像素/米
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unsigned long int biColors; // 颜色数
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unsigned long int biImpColors; // 重要颜色数
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BmpRgbQuad palette[2]; // 调色板
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}__attribute__ ((packed)) BitmapHead;
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#pragma pack(4)
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class BWBmp
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{
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public:
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BWBmp();
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public:
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int LoadBiBmp(QString filename);
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int SavePrBmp(QString filename);
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int Compress(int dir = 1);
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int LoadPrBmp(QString filename);
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int Unpress();
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int SaveBiBmp(QString filename);
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QByteArray getPrBmpDat();
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private:
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QByteArray m_bwDdat;
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QByteArray m_prDdat;
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QByteArray m_rbwDdat;
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QString m_fileName;
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};
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#endif // BWBMP_H
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