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Diffstat (limited to 'include/iprt/formats/bmp.h')
| -rw-r--r-- | include/iprt/formats/bmp.h | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/include/iprt/formats/bmp.h b/include/iprt/formats/bmp.h new file mode 100644 index 00000000..1a1625df --- /dev/null +++ b/include/iprt/formats/bmp.h @@ -0,0 +1,192 @@ +/* $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 */ + |