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/* $Id: bmp.h $ */
/** @file
* IPRT - Microsoft Bitmap Formats (BMP).
*/
/*
* Copyright (C) 2006-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#ifndef IPRT_INCLUDED_formats_bmp_h
#define IPRT_INCLUDED_formats_bmp_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <iprt/types.h>
#include <iprt/assertcompile.h>
/** @defgroup grp_rt_fmt_bmp Microsoft Bitmaps Formats (BMP)
* @ingroup grp_rt_formats
* @{
*/
/** @name BMP header sizes (in bytes).
* @{ */
#define BMP_HDR_SIZE_FILE 14
#define BMP_HDR_SIZE_OS21 12
#define BMP_HDR_SIZE_OS22 64
#define BMP_HDR_SIZE_WIN3X 40
/** @} */
/** BMP format file header. */
#pragma pack(1)
typedef struct BMPFILEHDR
{
/** File type identifier ("magic"). */
uint16_t uType;
/** Size of file in bytes. */
uint32_t cbFileSize;
/** Reserved (should be 0). */
uint16_t Reserved1;
/** Reserved (should be 0). */
uint16_t Reserved2;
/** Offset (in bytes) to bitmap data. */
uint32_t offBits;
} BMPFILEHDR;
#pragma pack()
AssertCompileSize(BMPFILEHDR, BMP_HDR_SIZE_FILE);
/** Pointer to a BMP format file header. */
typedef BMPFILEHDR *PBMPFILEHDR;
/** BMP file magic number for BMP / DIB. */
#define BMP_HDR_MAGIC (RT_H2LE_U16_C(0x4d42))
/** OS/2 1.x BMP core header,
* also known as BITMAPCOREHEADER. */
typedef struct BMPOS2COREHDR
{
/** Size (in bytes) of remaining header. */
uint32_t cbSize;
/** Width of bitmap in pixels. */
uint16_t uWidth;
/** Height of bitmap in pixels. */
uint16_t uHeight;
/** Number of planes. */
uint16_t cPlanes;
/** Color bits per pixel. */
uint16_t cBits;
} BMPOS2COREHDR;
AssertCompileSize(BMPOS2COREHDR, BMP_HDR_SIZE_OS21);
/** Pointer to a OS/2 1.x BMP core header. */
typedef BMPOS2COREHDR *PBMPOS2COREHDR;
/** OS/2 2.0 BMP core header, version 2,
* also known as BITMAPCOREHEADER2. */
typedef struct BMPOS2COREHDR2
{
/** Size (in bytes) of remaining header. */
uint32_t cbSize;
/** Width of bitmap in pixels. */
uint32_t uWidth;
/** Height of bitmap in pixels. */
uint32_t uHeight;
/** Number of planes. */
uint16_t cPlanes;
/** Color bits per pixel. */
uint16_t cBits;
/** Compression scheme of type BMP_COMPRESSION_TYPE. */
uint32_t enmCompression;
/** Size of bitmap in bytes. */
uint32_t cbSizeImage;
/** Horz. resolution in pixels/meter. */
uint32_t uXPelsPerMeter;
/** Vert. resolution in pixels/meter. */
uint32_t uYPelsPerMeter;
/** Number of colors in color table. */
uint32_t cClrUsed;
/** Number of important colors. */
uint32_t cClrImportant;
/** Resolution measurement Used. */
uint16_t uUnits;
/** Reserved fields (always 0). */
uint16_t Reserved;
/** Orientation of bitmap. */
uint16_t uRecording;
/** Halftone algorithm used on image. */
uint16_t enmHalftone;
/** Halftone algorithm data. */
uint32_t uHalftoneParm1;
/** Halftone algorithm data. */
uint32_t uHalftoneParm2;
/** Color table format (always 0). */
uint32_t uColorEncoding;
/** Misc. field for application use . */
uint32_t uIdentifier;
} BMPOS2COREHDR2;
AssertCompileSize(BMPOS2COREHDR2, BMP_HDR_SIZE_OS22);
/** Pointer to an OS/2 2.0 BMP core header version 2. */
typedef BMPOS2COREHDR2 *PBMPOS2COREHDR2;
/** Windows 3.x BMP information header Format. */
typedef struct BMPWIN3XINFOHDR
{
/** Size (in bytes) of remaining header. */
uint32_t cbSize;
/** Width of bitmap in pixels. */
uint32_t uWidth;
/** Height of bitmap in pixels. */
uint32_t uHeight;
/** Number of planes. */
uint16_t cPlanes;
/** Color bits per pixel. */
uint16_t cBits;
/** Compression scheme of type BMP_COMPRESSION_TYPE. */
uint32_t enmCompression;
/** Size of bitmap in bytes. */
uint32_t cbSizeImage;
/** Horz. resolution in pixels/meter. */
uint32_t uXPelsPerMeter;
/** Vert. resolution in pixels/meter. */
uint32_t uYPelsPerMeter;
/** Number of colors in color table. */
uint32_t cClrUsed;
/** Number of important colors. */
uint32_t cClrImportant;
} BMPWIN3XINFOHDR;
AssertCompileSize(BMPWIN3XINFOHDR, BMP_HDR_SIZE_WIN3X);
/** Pointer to a Windows 3.x BMP information header. */
typedef BMPWIN3XINFOHDR *PBMPWIN3XINFOHDR;
/** @name BMP compression types.
* @{ */
#define BMP_COMPRESSION_TYPE_NONE 0
#define BMP_COMPRESSION_TYPE_RLE8 1
#define BMP_COMPRESSION_TYPE_RLE4 2
/** @} */
/** @} */
#endif /* !IPRT_INCLUDED_formats_bmp_h */
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