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Diffstat (limited to 'src/bmp.h')
| -rw-r--r-- | src/bmp.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/bmp.h b/src/bmp.h new file mode 100644 index 0000000..212dce5 --- /dev/null +++ b/src/bmp.h @@ -0,0 +1,85 @@ +/*====================================================================* + - Copyright (C) 2001 Leptonica. All rights reserved. + - + - Redistribution and use in source and binary forms, with or without + - modification, are permitted provided that the following conditions + - are met: + - 1. Redistributions of source code must retain the above copyright + - notice, this list of conditions and the following disclaimer. + - 2. Redistributions in binary form must reproduce the above + - copyright notice, this list of conditions and the following + - disclaimer in the documentation and/or other materials + - provided with the distribution. + - + - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + - ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY + - CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + - EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + - PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + - PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + - OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + - NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + *====================================================================*/ + +#ifndef LEPTONICA_BMP_H +#define LEPTONICA_BMP_H + +/* + * This file is here to describe the fields in the header of + * the BMP file. These fields are not used directly in Leptonica. + * The only thing we use are the sizes of these two headers. + * Furthermore, because of potential namespace conflicts with + * the typedefs and defined sizes, we have changed the names + * to protect anyone who may also need to use the original definitions. + * Thanks to J. D. Bryan for pointing out the potential problems when + * developing on Win32 compatible systems. + */ + +/*-------------------------------------------------------------* + * BMP file header * + *-------------------------------------------------------------*/ +struct BMP_FileHeader +{ + l_int16 bfType; /* file type; must be "BM" */ + l_int16 bfSize; /* length of the file; + sizeof(BMP_FileHeader) + + sizeof(BMP_InfoHeader) + + size of color table + + size of DIB bits */ + l_int16 bfFill1; /* remainder of the bfSize field */ + l_int16 bfReserved1; /* don't care (set to 0)*/ + l_int16 bfReserved2; /* don't care (set to 0)*/ + l_int16 bfOffBits; /* offset from beginning of file */ + l_int16 bfFill2; /* remainder of the bfOffBits field */ +}; +typedef struct BMP_FileHeader BMP_FH; + +#define BMP_FHBYTES sizeof(BMP_FH) + + +/*-------------------------------------------------------------* + * BMP info header * + *-------------------------------------------------------------*/ +struct BMP_InfoHeader +{ + l_int32 biSize; /* size of the BMP_InfoHeader struct */ + l_int32 biWidth; /* bitmap width in pixels */ + l_int32 biHeight; /* bitmap height in pixels */ + l_int16 biPlanes; /* number of bitmap planes */ + l_int16 biBitCount; /* number of bits per pixel */ + l_int32 biCompression; /* compression format (0 == uncompressed) */ + l_int32 biSizeImage; /* size of image in bytes */ + l_int32 biXPelsPerMeter; /* pixels per meter in x direction */ + l_int32 biYPelsPerMeter; /* pixels per meter in y direction */ + l_int32 biClrUsed; /* number of colors used */ + l_int32 biClrImportant; /* number of important colors used */ +}; +typedef struct BMP_InfoHeader BMP_IH; + +#define BMP_IHBYTES sizeof(BMP_IH) + + +#endif /* LEPTONICA_BMP_H */ |