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75 lines
3.6 KiB
C
75 lines
3.6 KiB
C
/*====================================================================*
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- Copyright (C) 2001 Leptonica. All rights reserved.
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- This software is distributed in the hope that it will be
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- useful, but with NO WARRANTY OF ANY KIND.
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- No author or distributor accepts responsibility to anyone for the
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- consequences of using this software, or for whether it serves any
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- particular purpose or works at all, unless he or she says so in
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- writing. Everyone is granted permission to copy, modify and
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- redistribute this source code, for commercial or non-commercial
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- purposes, with the following restrictions: (1) the origin of this
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- source code must not be misrepresented; (2) modified versions must
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- be plainly marked as such; and (3) this notice may not be removed
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- or altered from any source or modified source distribution.
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*====================================================================*/
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#ifndef LEPTONICA_BMP_H
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#define LEPTONICA_BMP_H
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/*
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* This file is here to describe the fields in the header of
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* the BMP file. These fields are not used directly in Leptonica.
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* The only thing we use are the sizes of these two headers.
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* Furthermore, because of potential namespace conflicts with
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* the typedefs and defined sizes, we have changed the names
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* to protect anyone who may also need to use the original definitions.
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* Thanks to J. D. Bryan for pointing out the potential problems when
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* developing on Win32 compatible systems.
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*/
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/*-------------------------------------------------------------*
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* BMP file header *
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*-------------------------------------------------------------*/
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struct BMP_FileHeader
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{
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l_int16 bfType; /* file type; must be "BM" */
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l_int16 bfSize; /* length of the file;
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sizeof(BMP_FileHeader) +
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sizeof(BMP_InfoHeader) +
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size of color table +
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size of DIB bits */
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l_int16 bfFill1; /* remainder of the bfSize field */
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l_int16 bfReserved1; /* don't care (set to 0)*/
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l_int16 bfReserved2; /* don't care (set to 0)*/
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l_int16 bfOffBits; /* offset from beginning of file */
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l_int16 bfFill2; /* remainder of the bfOffBits field */
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};
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typedef struct BMP_FileHeader BMP_FH;
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#define BMP_FHBYTES sizeof(BMP_FH)
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/*-------------------------------------------------------------*
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* BMP info header *
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*-------------------------------------------------------------*/
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struct BMP_InfoHeader
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{
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l_int32 biSize; /* size of the BMP_InfoHeader struct */
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l_int32 biWidth; /* bitmap width in pixels */
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l_int32 biHeight; /* bitmap height in pixels */
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l_int16 biPlanes; /* number of bitmap planes */
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l_int16 biBitCount; /* number of bits per pixel */
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l_int32 biCompression; /* compression format (0 == uncompressed) */
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l_int32 biSizeImage; /* size of image in bytes */
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l_int32 biXPelsPerMeter; /* pixels per meter in x direction */
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l_int32 biYPelsPerMeter; /* pixels per meter in y direction */
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l_int32 biClrUsed; /* number of colors used */
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l_int32 biClrImportant; /* number of important colors used */
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};
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typedef struct BMP_InfoHeader BMP_IH;
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#define BMP_IHBYTES sizeof(BMP_IH)
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#endif /* LEPTONICA_BMP_H */
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