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/* $Id$ */

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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 offset;       ///< offset of bitmap data from .bmp file begining

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	uint32 width;        ///< bitmap width

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	uint32 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 bpp;          ///< bits per pixel

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	uint32 compression;  ///< compression method (0 = none, 1 = 8-bit RLE, 2 = 4-bit RLE)

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	uint32 palette_size; ///< number of colors in palette

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};

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struct BmpData {

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	Colour *palette;

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	byte   *bitmap;

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};

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#define BMP_BUFFER_SIZE 1024

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struct BmpBuffer {

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	byte 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 */