OJODIGITAL

function(PARAMS *structGlobalAppState, char **arrayGlobalAppStrings, ...);

// Image info struct
// DNG version and camera white balance coef. still missing
typedef struct DCRAW_ImageInfo
{
       char  *timestamp;
       char  *camera_make;
       char  *camera_model;
       char  *artist;
       int   iso_speed;
       float shutter;
       float aperture;
       float focal_length;
       float aspect_ratio;
       int   raw_width;
       int   raw_height;
       int   in_width;
       int   in_height;
       int   out_width;
       int   out_height;
       int   raw_colors;
       char  *filter_pattern;
}IMAGE_INFO;
            
// Struct for passing parameters to the development process
// * implemented in perfectRAW
typedef struct DCRAW_Parameters
{       
       float    threshold;         // -n -> buffer 2
       double   aber[4];           // -r -> buffer 2
       int      use_auto_wb;       // -a -> buffer 2 
       int      use_camera_wb;     // -w -> buffer 2
       unsigned greybox[4];        // -A -> buffer 2      
       int      user_black;        // -K -> buffer 2 *
       int      user_sat;          // -S -> buffer 2 *
       int      test_pattern;      //    -> buffer 2       
       int      level_greens;      // -l -> buffer 2       
       int      user_qual;         // -q -> buffer 3
       int      four_color_rgb;    // -f -> buffer 3
       int      med_passes;        // -m -> buffer 4
       int      highlight;         // -H -> buffer 4 *
       int      output_color;      // -o -> buffer 5                   
       int      use_fuji_rotate;   // -J -> buffer 5
       float    user_gamma;        // -g -> buffer 5       
       float    exposure;          //    -> buffer 4 *
       float    preserve;          //    -> buffer 4 *
}DLL_PARAMETERS;

// Struct for saving and restoring DLL state
typedef struct DCRAW_State
{
       int    valid;       
       int    filters;
       int    colors;
       int    shrink;
       int    half_size;
       int    mix_green;
       int    width;
       int    height;
       int    iwidth;
       int    iheight;
       int    top_margin;
       int    left_margin;     
       int    raw_color;  
       int    maximum;
       int    black;
       float  cam_mul[4];
       float  pre_mul[4];
       float  cmatrix[3][4];
       float  rgb_cam[3][4];
       unsigned short (*buffer)[4];
}DLL_STATE;

publicvoid GetInfo()
{
info.timestamp = newStringBuilder(200);
info.camera_make = newStringBuilder(200);
info.camera_model = newStringBuilder(200);
info.artist = newStringBuilder(200);
info.filter_pattern = newStringBuilder(200);
DCRAW_GetInfo(ref info);
}

No se controló TypeLoadException:
 
No se puede calcular la referencia del campo 'timestamp' del tipo 'IMAGE_INFO': El campo de clase o el campo de estructura no puede ser del tipo StringBuilder. Normalmente se puede conseguir el mismo efecto utilizando un campo String y realizando una inicialización previa de éste en una cadena con una longitud que coincida con la longitud del búfer apropiado.

publicvoid GetInfo()
{
info.timestamp = newstring(' ',200);
info.camera_make = newstring(' ', 200);
info.camera_model = newstring(' ', 200);
info.artist = newstring(' ', 200);
info.filter_pattern = newstring(' ', 200);
DCRAW_GetInfo(ref info);
}

No se controló una excepción del tipo AccessViolationException:
 
Intento de leer o escribir en la memoria protegida. A menudo, esto indica que hay otra memoria dañada.

        [StructLayout(LayoutKind.Sequential)]
        public struct IMAGE_INFO
        {
            public StringBuilder timestamp;
            public StringBuilder camera_make;
            public StringBuilder camera_model;
            public StringBuilder artist;
            public int iso_speed;
            public float shutter;
            public float aperture;
            public float focal_length;
            public float aspect_ratio;
            public int raw_width;
            public int raw_height;
            public int in_width;
            public int in_height;
            public int out_width;
            public int out_height;
            public int raw_colors;
            public StringBuilder filter_pattern;
        }

[StructLayout(LayoutKind.Sequential,CharSet=CharSet.Ansi)]
publicstructIMAGE_INFO
{
[MarshalAs(UnmanagedType.ByValTStr,SizeConst = 26)]
publicstring timestamp;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
publicstring camera_make;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
publicstring camera_model;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
publicstring artist;
publicint iso_speed;
publicfloat shutter;
publicfloat aperture;
publicfloat focal_length;
publicfloat aspect_ratio;
publicint raw_width;
publicint raw_height;
publicint in_width;
publicint in_height;
publicint out_width;
publicint out_height;
publicint raw_colors;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
publicstring filter_pattern;
}

typedef struct DCRAW_ImageInfo
{
char timestamp[26];
char camera_make[64];
char camera_model[64];
char artist[64];
int iso_speed;
float shutter;
float aperture;
float focal_length;
float aspect_ratio;
int raw_width;
int raw_height;
int in_width;
int in_height;
int out_width;
int out_height;
int raw_colors;
char filter_pattern[64];
}IMAGE_INFO;

[StructLayout(LayoutKind.Sequential,CharSet=CharSet.Ansi)]
publicstructIMAGE_INFO
{
[MarshalAs(UnmanagedType.ByValTStr,SizeConst = 26)]
publicstring timestamp;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
publicstring camera_make;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
publicstring camera_model;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
publicstring artist;
publicint iso_speed;
publicfloat shutter;
publicfloat aperture;
publicfloat focal_length;
publicfloat aspect_ratio;
publicint raw_width;
publicint raw_height;
publicint in_width;
publicint in_height;
publicint out_width;
publicint out_height;
publicint raw_colors;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
publicstring filter_pattern;
}