mirror of https://github.com/OpenTTD/OpenTTD.git
46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/*
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* This file is part of OpenTTD.
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* OpenTTD 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, version 2.
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* OpenTTD 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.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file bmp.h Read and write support for bmps. */
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#ifndef BMP_H
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#define BMP_H
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#include "gfx_type.h"
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struct BmpInfo {
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uint32_t offset; ///< offset of bitmap data from .bmp file beginning
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uint32_t width; ///< bitmap width
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uint32_t height; ///< bitmap height
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bool os2_bmp; ///< true if OS/2 1.x or windows 2.x bitmap
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uint16_t bpp; ///< bits per pixel
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uint32_t compression; ///< compression method (0 = none, 1 = 8-bit RLE, 2 = 4-bit RLE)
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uint32_t palette_size; ///< number of colours in palette
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};
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struct BmpData {
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Colour *palette;
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uint8_t *bitmap;
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};
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#define BMP_BUFFER_SIZE 1024
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struct BmpBuffer {
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uint8_t data[BMP_BUFFER_SIZE];
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int pos;
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int read;
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FILE *file;
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uint real_pos;
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};
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void BmpInitializeBuffer(BmpBuffer *buffer, FILE *file);
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bool BmpReadHeader(BmpBuffer *buffer, BmpInfo *info, BmpData *data);
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bool BmpReadBitmap(BmpBuffer *buffer, BmpInfo *info, BmpData *data);
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void BmpDestroyData(BmpData *data);
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#endif /* BMP_H */
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