ImgEncoder.h

Go to the documentation of this file.

#pragma once
#ifndef __ImgEncoder_h
#define __ImgEncoder_h
#include <atlbase.h>

enum FLIP
{
    VERTICAL,
    HORIZONTAL,
    BOTH
};

enum TYPE
{
    BMP,
    JPG,
    PNG,
    TIFF,
    GIF
};

#ifdef OPH_EXPORT
#define OPH_DLL __declspec(dllexport)
#else
#define OPH_DLL __declspec(dllimport)
#endif
namespace oph
{
    class OPH_DLL ImgEncoder
    {
    private:
        ImgEncoder();
        ~ImgEncoder();
        static ImgEncoder *instance;
        static void Destroy() {
            delete instance;
        }
    public:
        static ImgEncoder* getInstance() {
            if (instance == nullptr) {
                instance = new ImgEncoder();
                atexit(Destroy);
            }
            return instance;
        }

        bool Save(const char *path, BYTE *pBuf, UINT len, int quality = 100);
        int CalcBitmapSize(int w, int h, int ch) { return (((w * ch) + 3) & ~3) * h; }
        bool GetSize(const char* path, unsigned int *size);
        void Resize(unsigned char* src, unsigned char* dst, int w, int h, int neww, int newh, int ch);
        bool Rotate(double rotate, unsigned char *src, unsigned char *dst, int w, int h, int neww, int newh, int ch);
        bool Flip(FLIP mode, unsigned char *src, unsigned char *dst, int w, int h, int ch);
        bool Crop(unsigned char *src, unsigned char *dst, int w, int h, int ch, int x, int y, int neww, int newh);


    private:
        int GetEncoderClsid(const WCHAR *format, CLSID *pClsid);
        char* GetExtension(const char *path);
    };
}
#endif