PFCImageFile.h

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#ifndef PFCIMAGEFILE_H
#define PFCIMAGEFILE_H

#ifdef WIN32
#if defined(PFCIMAGEFILEDLL_LIBRARY)
#  define PFCIMAGEFILEDLLSHARED_EXPORT __declspec(dllexport)
#else
#  define PFCIMAGEFILEDLLSHARED_EXPORT __declspec(dllimport)
#endif
#else
#  define PFCIMAGEFILEDLLSHARED_EXPORT
#endif

#include <string>

typedef enum {
    LOAD_OK,                    
    LOAD_ERROR,                 
    LOAD_ERROR_UNSUPPORTED,     
    LOAD_FAILED_CONVERT_SRGB    
} PFC_FILE_LOAD_STATUS;

class PFCIMAGEFILEDLLSHARED_EXPORT PFCImageFile
{

public:
    typedef enum {
        PFC_JPEG = 1, 
        PFC_PNG,      
        PFC_WEBP      
    } PFC_FILETYPE;

    PFCImageFile();
    PFCImageFile(int width, int height, const PFCImageFile &model);
    PFCImageFile(int width, int height, int bytes_per_pixel, int stride);
    ~PFCImageFile();
    PFC_FILE_LOAD_STATUS LoadImageFile(const char *filename, bool bConvertToSRGB, const char *iccFolderPath);

    PFC_FILE_LOAD_STATUS LoadImageFile(const char *filename, PFC_FILETYPE type, bool bConvertToSRGB, const char *iccFolderPath);

    PFC_FILE_LOAD_STATUS ExpandImageBuffer(char *data, long size, PFC_FILETYPE type, bool bConvertToSRGB, const char *iccFolderPath);

    int CompressImageBuffer(unsigned char** destination, PFC_FILETYPE type, int quality, bool bConvertToOriginalColorSpace, bool bEmbedOriginalMetadata);

    bool SaveImageFile(const char *filename, int quality, bool bConvertToOriginalColorSpace, bool bEmbedOriginalMetadata);

    bool SaveImageFile(const char *filename, PFC_FILETYPE type, int quality, bool bConvertToOriginalColorSpace, bool bEmbedOriginalMetadata);

    void AllocBuffer(int width, int height, int bytes_per_pixel, int stride);
    int pfcImageFormat();
    int exifOrientation();

    unsigned char *raw_image;
    int width;
    int height;
    int bytes_per_pixel;
    int stride;
    bool sourceSRGB;

private:
    void init();

    bool ConvertToSRGB();
    bool ConvertFromSRGBToOriginal();
    bool applyColorTransform(void* hTransform);

    unsigned char* allocDataFromFile(const char* filename, long& size);

    PFC_FILE_LOAD_STATUS read_jpeg_file( const char *filename, bool bConvertToSRGB, const char *iccFolderPath );
    int write_jpeg_file( const char *filename, int quality, bool bConvertToOriginalColorSpace, bool bEmbedOriginalMetadata );
    int compress_jpeg_buffer(unsigned char** destination, int quality, bool bConvertToOriginalColorSpace, bool bEmbedOriginalMetadata );
    PFC_FILE_LOAD_STATUS expand_jpeg( unsigned char *data, long size, bool bConvertToSRGB, const char *iccFolderPath );

    PFC_FILE_LOAD_STATUS read_rawdump( const char *filename);
    PFC_FILE_LOAD_STATUS read_png( const char *filename);
    PFC_FILE_LOAD_STATUS expand_png(char* data, long size);

    PFC_FILE_LOAD_STATUS read_webp(const char* filename);
    PFC_FILE_LOAD_STATUS expand_webp(char* data, long size);
    int compress_webp(unsigned char** data, float quality);
    bool write_webp(const char *filename, float quality);

    bool write_rawdump(const char *basename); // adds dump params to the name: basename.hex -> basename-<w>-<h>-<bpp>.hex
    bool write_png(const char *filename, bool bConvertToOriginalColorSpace);
    int compress_png(unsigned char** data, bool bConvertToOriginalColorSpace);

    void read_exif_data(unsigned char *data, long size, unsigned char **buf, unsigned int *bufLen, bool bFillReferencedICC, int *iEXIFOrientation);

    void* hTransformToSRGB;
    void* hTransformSRGBToOriginal;
    unsigned int embeddedICCLen;
    unsigned char* embeddedICCBuf;

    bool bIgnoreNonembeddedIcc; // TODO:

    std::string originalPath;
    void* originalExifData;

    int jpeg_color_space;
    int m_color_space;      //
    int m_iEXIFOrientation;
};

#endif // PFCIMAGEFILE_H