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/* $Id$ */
#ifdef __cplusplus
extern "C" {
#endif
/*
gd_bmp.c
Bitmap format support for libgd
* Written 2007, Scott MacVicar
---------------------------------------------------------------------------
Todo:
RLE4, RLE8 and Bitfield encoding
Add full support for Windows v4 and Windows v5 header formats
----------------------------------------------------------------------------
*/
#ifndef BMP_H
#define BMP_H 1
#define BMP_PALETTE_3 1
#define BMP_PALETTE_4 2
#define BMP_WINDOWS_V3 40
#define BMP_OS2_V1 12
#define BMP_OS2_V2 64
#define BMP_WINDOWS_V4 108
#define BMP_WINDOWS_V5 124
#define BMP_BI_RGB 0
#define BMP_BI_RLE8 1
#define BMP_BI_RLE4 2
#define BMP_BI_BITFIELDS 3
#define BMP_BI_JPEG 4
#define BMP_BI_PNG 5
#define BMP_RLE_COMMAND 0
#define BMP_RLE_ENDOFLINE 0
#define BMP_RLE_ENDOFBITMAP 1
#define BMP_RLE_DELTA 2
#define BMP_RLE_TYPE_RAW 0
#define BMP_RLE_TYPE_RLE 1
/* BMP header. */
typedef struct {
/* 16 bit - header identifying the type */
signed short int magic;
/* 32bit - size of the file */
int size;
/* 16bit - these two are in the spec but "reserved" */
signed short int reserved1;
signed short int reserved2;
/* 32 bit - offset of the bitmap header from data in bytes */
signed int off;
} bmp_hdr_t;
/* BMP info. */
typedef struct {
/* 16bit - Type, ie Windows or OS/2 for the palette info */
signed short int type;
/* 32bit - The length of the bitmap information header in bytes. */
signed int len;
/* 32bit - The width of the bitmap in pixels. */
signed int width;
/* 32bit - The height of the bitmap in pixels. */
signed int height;
/* 8 bit - The bitmap data is specified in top-down order. */
signed char topdown;
/* 16 bit - The number of planes. This must be set to a value of one. */
signed short int numplanes;
/* 16 bit - The number of bits per pixel. */
signed short int depth;
/* 32bit - The type of compression used. */
signed int enctype;
/* 32bit - The size of the image in bytes. */
signed int size;
/* 32bit - The horizontal resolution in pixels/metre. */
signed int hres;
/* 32bit - The vertical resolution in pixels/metre. */
signed int vres;
/* 32bit - The number of color indices used by the bitmap. */
signed int numcolors;
/* 32bit - The number of color indices important for displaying the bitmap. */
signed int mincolors;
} bmp_info_t;
#endif
#ifdef __cplusplus
}
#endif
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