00001 // pngdib.h 00002 00003 #ifndef __PNGDIB_H__ 00004 #define __PNGDIB_H__ 00005 00006 #ifdef __cplusplus 00007 extern "C" { 00008 #endif 00009 00010 #define PNGDIB_HEADER_VERSION 20200 00011 #define PNGDIB_HEADER_VERSION_STRING "2.2.0" 00012 00013 00014 // error codes returned by read_png_to_dib() and/or 00015 // write_dib_to_png() 00016 00017 #define PNGD_E_SUCCESS 0 00018 #define PNGD_E_ERROR 1 // unspecified error 00019 #define PNGD_E_VERSION 2 // struct size problem 00020 #define PNGD_E_NOMEM 3 // could not alloc memory 00021 #define PNGD_E_UNSUPP 4 // unsupported image type 00022 #define PNGD_E_LIBPNG 5 // libpng error (corrupt PNG?) 00023 #define PNGD_E_BADBMP 6 // corrupt or unsupported DIB 00024 #define PNGD_E_BADPNG 7 // corrupt or unsupported PNG 00025 #define PNGD_E_READ 8 // couldn't read PNG file 00026 #define PNGD_E_WRITE 9 // couldn't write PNG file 00027 00028 struct PNGD_COLOR_struct { 00029 unsigned char red, green, blue, reserved; 00030 }; 00031 00032 typedef struct PNGD_D2PINFO_struct { 00033 DWORD structsize; // sizeof(PNGD_D2PINFO) 00034 DWORD flags; 00035 #define PNGD_INTERLACED 0x00000001 00036 #define PNGD_NO_GAMMA_LABEL 0x00000002 00037 00038 const char* pngfn; // PNG filename to write 00039 00040 LPBITMAPINFOHEADER lpdib; 00041 int dibsize; // can be 0 00042 00043 VOID* lpbits; // can be NULL 00044 int bitssize; // can be 0 00045 00046 char* software; // (NULL==don't include) 00047 // added in v2.0 00048 char* errmsg; // user can set to null or 100-char buffer 00049 } PNGD_D2PINFO; 00050 00051 00052 typedef struct PNGD_IMAGEINFO_struct { 00053 DWORD structsize; // sizeof(PNGD_IMAGEINFO) 00054 DWORD flags; 00055 00056 } PNGD_IMAGEINFO; 00057 00058 typedef struct PNGD_P2DINFO_struct { 00059 DWORD structsize; // sizeof(PNGD_P2DINFO) 00060 00061 DWORD flags; // combination of below: 00062 #define PNGD_USE_BKGD 0x00000001 00063 #define PNGD_USE_CUSTOM_BG 0x00000002 00064 #define PNGD_GAMMA_CORRECTION 0x00000004 00065 #define PNGD_USE_HEAPALLOC 0x00000008 00066 00067 #define PNGD_BG_RETURNED 0x00010000 // return value only 00068 #define PNGD_RES_RETURNED 0x00020000 // set if xres,yres,res_units are valid 00069 #define PNGD_GAMMA_RETURNED 0x00040000 // set if file_gamma is valid 00070 00071 const char* pngfn; // PNG filename to read 00072 00073 LPBITMAPINFOHEADER lpdib; // return value only 00074 int dibsize; // return value only 00075 int palette_offs; // return value only 00076 int bits_offs; // return value only 00077 RGBQUAD* palette; // return value only 00078 int palette_colors; // return value only 00079 VOID* lpbits; // return value only 00080 // added in v2.0 (size=48) 00081 struct PNGD_COLOR_struct bgcolor; // IN OUT 00082 char* errmsg; // user can set to null or 100-char buffer 00083 // added in v2.1 (size=88) 00084 int color_type; 00085 int bits_per_sample; 00086 int bits_per_pixel; 00087 int interlace; 00088 int res_x,res_y; 00089 int res_units; 00090 int reserved1; 00091 double file_gamma; 00092 // added in v2.2 (size=96) 00093 HANDLE heap; 00094 int reserved2; 00095 00096 } PNGD_P2DINFO; 00097 00098 00099 00100 int read_png_to_dib(PNGD_P2DINFO *p2dinfo); 00101 00102 int write_dib_to_png(PNGD_D2PINFO *d2pinfo); 00103 00104 char* pngdib_get_version_string(void); 00105 int pngdib_get_version(void); 00106 00107 #ifdef __cplusplus 00108 } 00109 #endif 00110 00111 #endif /* __PNGDIB_H__ */
1.7.1