src/apps/mplayerc/pngdib.h

   1 // pngdib.h
   2
   3 #ifndef PNGDIB_H_INCLUDED
   4 #define PNGDIB_H_INCLUDED
   5
   6 #include <tchar.h>
   7
   8 #ifdef __cplusplus
   9 extern "C" {
  10 #endif
  11
  12 #ifdef _UNICODE
  13 // the V2 compatibility layer isn't UNICODE compatible
  14 #define PNGDIB_V2COMPATIBLE  0
  15 #endif
  16
  17 // If you don't need to be compatible with PNGDIB v1.x and v2.x,
  18 // you can define this to 0 and save a few bytes.
  19 #ifndef PNGDIB_V2COMPATIBLE
  20 #define PNGDIB_V2COMPATIBLE  1
  21 #endif
  22
  23 #define PNGDIB_HEADER_VERSION     30001
  24
  25
  26 #define PNGDIB_DEFAULT_SCREEN_GAMMA   2.20000
  27 #define PNGDIB_DEFAULT_FILE_GAMMA     0.45455
  28
  29
  30 #define PNGDIB_DECL  __stdcall
  31
  32 #define PNGDIB_EXT
  33
  34
  35 // error codes returned by pngdib_*_run()
  36
  37 #define PNGD_E_SUCCESS   0
  38 #define PNGD_E_ERROR     1   // unspecified error
  39 #define PNGD_E_VERSION   2   // struct size problem
  40 #define PNGD_E_NOMEM     3   // could not alloc memory
  41 #define PNGD_E_UNSUPP    4   // unsupported image type
  42 #define PNGD_E_LIBPNG    5   // libpng error (corrupt PNG?)
  43 #define PNGD_E_BADBMP    6   // corrupt or unsupported DIB
  44 #define PNGD_E_BADPNG    7   // corrupt or unsupported PNG
  45 #define PNGD_E_READ      8   // couldn't read PNG file
  46 #define PNGD_E_WRITE     9   // couldn't write PNG file
  47
  48 #if (PNGDIB_V2COMPATIBLE) || defined(PNGDIB_INTERNALS)
  49
  50 struct PNGD_COLOR_struct {
  51         unsigned char red, green, blue, reserved;
  52 };
  53
  54 #endif
  55
  56
  57 #if PNGDIB_V2COMPATIBLE
  58
  59 typedef struct PNGD_D2PINFO_struct {
  60         DWORD           structsize;      // sizeof(PNGD_D2PINFO)
  61         DWORD           flags;
  62 #define PNGD_INTERLACED        0x00000001
  63 #define PNGD_NO_GAMMA_LABEL    0x00000002
  64 #define PNGD_DIB_ALPHA32       0x00000010
  65
  66         char*           pngfn;          // PNG filename to write
  67
  68         LPBITMAPINFOHEADER    lpdib;
  69         int             dibsize;        // can be 0
  70
  71         VOID*           lpbits;         // can be NULL
  72         int             bitssize;       // can be 0
  73
  74         char*           software;       // (NULL==don't include)
  75 // added in v2.0
  76         char*           errmsg;          // user can set to null or 100-char buffer
  77 } PNGD_D2PINFO;
  78
  79
  80 typedef struct PNGD_IMAGEINFO_struct {
  81         DWORD           structsize;    // sizeof(PNGD_IMAGEINFO)
  82         DWORD           flags;
  83
  84 } PNGD_IMAGEINFO;
  85
  86 typedef struct PNGD_P2DINFO_struct {
  87         DWORD           structsize;      // sizeof(PNGD_P2DINFO)
  88
  89         DWORD           flags;           // combination of below:
  90 #define PNGD_USE_BKGD          0x00000001
  91 #define PNGD_USE_CUSTOM_BG     0x00000002
  92 #define PNGD_GAMMA_CORRECTION  0x00000004
  93 #define PNGD_USE_HEAPALLOC     0x00000008
  94 //#define PNGD_DIB_ALPHA32     0x00000010  already defined above
  95
  96 #define PNGD_BG_RETURNED     0x00010000 // return value only
  97 #define PNGD_RES_RETURNED    0x00020000 // set if xres,yres,res_units are valid
  98 #define PNGD_GAMMA_RETURNED  0x00040000 // set if file_gamma is valid
  99
 100         char*           pngfn;           // PNG filename to read
 101
 102         LPBITMAPINFOHEADER    lpdib;     // return value only
 103         int             dibsize;         // return value only
 104         int             palette_offs;    // return value only
 105         int             bits_offs;       // return value only
 106         RGBQUAD*        palette;         // return value only
 107         int             palette_colors;  // return value only
 108         VOID*           lpbits;          // return value only
 109 // added in v2.0  (size=48)
 110         struct PNGD_COLOR_struct bgcolor; // IN OUT
 111         char*           errmsg;          // user can set to null or 100-char buffer
 112 // added in v2.1  (size=88)
 113         int             color_type;
 114         int             bits_per_sample;
 115         int             bits_per_pixel;
 116         int             interlace;
 117         int             res_x,res_y;
 118         int             res_units;
 119         int             reserved1;
 120         double          file_gamma;
 121 // added in v2.2   (size=96)
 122         HANDLE          heap;
 123         int             reserved2;
 124
 125 } PNGD_P2DINFO;
 126
 127 int read_png_to_dib(PNGD_P2DINFO *p2dinfo);
 128 int write_dib_to_png(PNGD_D2PINFO *d2pinfo);
 129
 130 #endif  // PNGDIB_V2COMPATIBLE
 131
 132
 133 // public definitions
 134
 135 typedef void* (PNGDIB_DECL *pngdib_malloc_cb_type)(void *userdata, int memblksize);
 136 typedef void  (PNGDIB_DECL *pngdib_free_cb_type)(void *userdata, void *memblk);
 137 typedef void* (PNGDIB_DECL *pngdib_realloc_cb_type)(void *userdata, void *memblk, int memblksize);
 138
 139 struct pngdib_common_struct;
 140 typedef struct pngdib_common_struct PNGDIB;
 141
 142
 143 #define PNGD_ST_D2P 1
 144 #define PNGD_ST_P2D 2
 145
 146
 147 #ifdef PNGDIB_INTERNALS
 148
 149 // definitions for internal library use only
 150
 151 #define PNGDIB_ERRMSG_MAX 200
 152
 153
 154 struct pngdib_common_struct {
 155         int structtype;
 156         void *userdata;
 157         TCHAR *errmsg;
 158         pngdib_malloc_cb_type   malloc_function;
 159         pngdib_free_cb_type     free_function;
 160         pngdib_realloc_cb_type  realloc_function;
 161         int dib_alpha32;
 162 };
 163
 164 struct d2p_struct {
 165         struct pngdib_common_struct common;
 166
 167         const BITMAPINFOHEADER* pdib;
 168         int dibsize;
 169         const void* pbits;
 170         int bitssize;
 171         int interlaced;
 172         TCHAR* output_filename;
 173         char* software_id_string;
 174         int file_gamma_valid;
 175         double file_gamma;
 176 };
 177
 178 struct p2d_struct {
 179         struct pngdib_common_struct common;
 180
 181         int input_method; // 0=filename, 1=memory
 182         TCHAR* input_filename;
 183         unsigned char* input_memblk;
 184         int input_memblk_size;
 185         int input_memblk_curpos;
 186
 187         int use_file_bg_flag;
 188         int use_custom_bg_flag;
 189         struct PNGD_COLOR_struct bgcolor;
 190         int gamma_correction; // should we gamma correct (using screen_gamma)?
 191         double screen_gamma;
 192
 193         BITMAPINFOHEADER*   pdib;
 194         int        dibsize;
 195         int        palette_offs;
 196         int        bits_offs;
 197         int        bitssize;
 198         RGBQUAD*   palette;
 199         int        palette_colors;
 200         void*      pbits;
 201         int        color_type;
 202         int        bits_per_sample;
 203         int        bits_per_pixel;
 204         int        interlace;
 205         int        res_x,res_y;
 206         int        res_units;
 207         int        res_valid;  // are res_x, res_y, res_units valid?
 208         double file_gamma;
 209         int gamma_returned;  // set if we know the file gamma
 210         int bgcolor_returned;
 211 };
 212
 213 #undef _PNGD_DEFINE_COMMON_FIELDS
 214
 215
 216 #endif // PNGDIB_INTERNALS
 217
 218 ///////////// d2p functions
 219
 220 #define pngdib_d2p_init()  _pngdib_init(PNGD_ST_D2P,PNGDIB_HEADER_VERSION)
 221
 222 PNGDIB_EXT int PNGDIB_DECL pngdib_d2p_set_dib(PNGDIB *d2p,
 223         const BITMAPINFOHEADER* pdib, int dibsize,
 224             const void* pbits, int bitssize);
 225
 226 PNGDIB_EXT void PNGDIB_DECL pngdib_d2p_set_interlace(PNGDIB *d2p, int interlaced);
 227 PNGDIB_EXT int  PNGDIB_DECL pngdib_d2p_set_png_filename(PNGDIB *d2p, const TCHAR *fn);
 228 PNGDIB_EXT int  PNGDIB_DECL pngdib_d2p_set_software_id(PNGDIB *d2p, const TCHAR *s);
 229 PNGDIB_EXT void PNGDIB_DECL pngdib_d2p_set_gamma_label(PNGDIB *d2p, int flag, double file_gamma);
 230
 231 PNGDIB_EXT int  PNGDIB_DECL pngdib_d2p_run(PNGDIB *d2p);
 232
 233 ////////////
 234
 235 //////////// p2d functions
 236
 237 #define pngdib_p2d_init()  _pngdib_init(PNGD_ST_P2D,PNGDIB_HEADER_VERSION)
 238
 239 PNGDIB_EXT int  PNGDIB_DECL pngdib_p2d_set_png_filename(PNGDIB *p2d, const TCHAR *fn);
 240 PNGDIB_EXT void PNGDIB_DECL pngdib_p2d_set_png_memblk(PNGDIB *p2d, const void *mem, int memsize);
 241
 242 PNGDIB_EXT void PNGDIB_DECL pngdib_p2d_set_use_file_bg(PNGDIB *p2d, int flag);
 243 PNGDIB_EXT void PNGDIB_DECL pngdib_p2d_set_custom_bg(PNGDIB *p2d, unsigned char r,
 244                                                                   unsigned char g, unsigned char b);
 245 PNGDIB_EXT void PNGDIB_DECL pngdib_p2d_set_gamma_correction(PNGDIB *p2d, int flag, double screen_gamma);
 246
 247 PNGDIB_EXT int  PNGDIB_DECL pngdib_p2d_run(PNGDIB *p2d);
 248
 249 PNGDIB_EXT int  PNGDIB_DECL pngdib_p2d_get_dib(PNGDIB *p2d, BITMAPINFOHEADER **ppdib, int *pdibsize);
 250 PNGDIB_EXT int  PNGDIB_DECL pngdib_p2d_get_dibbits(PNGDIB *p2d, void **ppbits, int *pbitsoffset, int *pbitssize);
 251 PNGDIB_EXT int  PNGDIB_DECL pngdib_p2d_get_palette(PNGDIB *p2d, RGBQUAD **ppal, int *ppaloffset, int *ppalnumcolors);
 252
 253 PNGDIB_EXT int  PNGDIB_DECL pngdib_p2d_get_colortype(PNGDIB *p2d);
 254 PNGDIB_EXT int  PNGDIB_DECL pngdib_p2d_get_bitspersample(PNGDIB *p2d);
 255 PNGDIB_EXT int  PNGDIB_DECL pngdib_p2d_get_bitsperpixel(PNGDIB *p2d);
 256 PNGDIB_EXT int  PNGDIB_DECL pngdib_p2d_get_samplesperpixel(PNGDIB *p2d);
 257 PNGDIB_EXT int  PNGDIB_DECL pngdib_p2d_get_interlace(PNGDIB *p2d);
 258 PNGDIB_EXT int  PNGDIB_DECL pngdib_p2d_get_density(PNGDIB *p2d, int *pres_x, int *pres_y, int *pres_units);
 259 PNGDIB_EXT int  PNGDIB_DECL pngdib_p2d_get_file_gamma(PNGDIB *p2d, double *pgamma);
 260 PNGDIB_EXT int  PNGDIB_DECL pngdib_p2d_get_bgcolor(PNGDIB *p2d, unsigned char *pr, unsigned char *pg, unsigned char *pb);
 261
 262 PNGDIB_EXT void PNGDIB_DECL pngdib_p2d_free_dib(PNGDIB *p2d, BITMAPINFOHEADER *pdib);
 263
 264 //////////// common functions
 265
 266 PNGDIB_EXT PNGDIB* PNGDIB_DECL _pngdib_init(int structtype, int caller_header_vers);
 267
 268 PNGDIB_EXT int   PNGDIB_DECL pngdib_done(PNGDIB *xx);
 269
 270 PNGDIB_EXT void  PNGDIB_DECL pngdib_setcallback_malloc(PNGDIB *xx,
 271         pngdib_malloc_cb_type   mallocfunc,
 272         pngdib_free_cb_type     freefunc,
 273         pngdib_realloc_cb_type  reallocfunc);
 274
 275 PNGDIB_EXT void   PNGDIB_DECL pngdib_set_userdata(PNGDIB *xx, void *userdata);
 276 PNGDIB_EXT void*  PNGDIB_DECL pngdib_get_userdata(PNGDIB *xx);
 277 PNGDIB_EXT TCHAR* PNGDIB_DECL pngdib_get_error_msg(PNGDIB *xx);
 278
 279 PNGDIB_EXT TCHAR* PNGDIB_DECL pngdib_get_version_string(void);
 280 PNGDIB_EXT int    PNGDIB_DECL pngdib_get_version(void);
 281
 282 PNGDIB_EXT void   PNGDIB_DECL pngdib_set_dibalpha32(PNGDIB *xx, int flag);
 283
 284 ////////////
 285
 286
 287 #ifdef __cplusplus
 288 }
 289 #endif
 290
 291 #endif // PNGDIB_H_INCLUDED