/*******************************************************************************
* bmp.h
*	Microsoft Windows bitmap (BMP) file definitions.
*
* 1.0 1992-01-27 drt.	First cut.
* 1.1 1992-04-13 drt.	Added bmp_file struct.
* 1.2 1992-08-25 drt.	Renamed bmp_header members.
* 1.3 1994-09-29 drt.	Added OS/2 os2_bmp_header struct.
* 1.4 1994-11-03 drt.	Added bmp_read_rgbtab() et al.
* 1.5 1997-03-29 drt.	Reformatted 4-space tabs into 8-space tabs.
* 1.6 2001-09-30 drt.	Converted int types for Win32.
*
* Copyright ©1992-2001 by David R. Tribble, all rights reserved.
*/


#ifndef drt_bmp_h
#define drt_bmp_h	106

#ifdef __cplusplus
extern "C"
{
#endif


/* Identification */

#ifndef NO_H_IDENT
static const char	drt_bmp_h_id[] =
    "@(#)drt/gr/bmp/bmp.h 1.6 2001-09-30";
#endif


/* System includes */

#include <limits.h>
#include <stdio.h>


/* Porting definitions */

#ifndef int16
 #if INT_MAX == 32767
  #define int16		int		/* 16-bit integer type		*/
 #else
  #define int16		short		/* 16-bit integer type		*/
 #endif
#endif

#ifndef int32
 #if INT_MAX == 2147483647
  #define int32		int		/* 32-bit integer type		*/
 #else
  #define int32		long		/* 32-bit integer type		*/
 #endif
#endif


/*******************************************************************************
* Microsoft Windows bitmap (BMP) file format
*
* Uncompressed 256-color BMP
*
*	00000	42 4D		magic, `BM'			\
*	00002	36 B4 04 00	file size, 0x04B436 308278	|
*	00006	00 00 00 00	(reserved)			|
*	0000A	36 04 00 00	header + color map size, 1078	|
*								|
*	0000E	28 00 00 00	this subheader size, 40		|
*	00012	80 02 00 00	image width, 640 pixels		|
*	00016	E0 01 00 00	image depth, 480 pixels		|
*	0001A	01 00		number of bit planes, 1		|
*	0001C	08 00		bits per pixel, 8 (256 colors)	|
*	0001E	00 00 00 00	compression type, 0 (none)	|
*	00022	00 00 00 00	image size, bytes (or zero)	|
*	00026	00 00 00 00	X pels per meter, 0		|
*	0002A	00 00 00 00	Y pels per meter, 0		|
*	0002E	00 00 00 00	colors used (or zero)		|
*	00032	00 00 00 00	important colors (or zero)	/
*
*	00036	21 21 21 00	RGB for color 00 (b,g,r,a)	\
*	0003A	F2 21 21 00	RGB for color 01		|
*	0003E	21 F2 21 00	RGB for color 02		+- RGB map
*	  :	 :		 :	:			|
*	00432	F2 F3 F2 00	RGB for color FF		/
*
*	00436	08 08 08 08	pixel data bytes (one byte per pixel)
*	  :	 :		 :	(left to right, bottom to top)
*	006B6	00		 :	(end of line padding, even byte)
*	  :	 :		 :
*	4B430	08 08 08 08	 :
*	4B434	08 08		 :
*	4B436	<eof>		end of file
*
*	0000.0000  42 4D 36 04 00 00 00 00  00 00 36 04 00 00 28 00
*	0000.0010  00 00 80 02 00 00 E0 01  00 00 01 00 08 00 00 00
*	0000.0020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
*	0000.0030  00 00 00 00 00 00|21 21  21 00 F2 21 21 00 21 F2
*	0000.0040  21 00 F2 F2 21 00 21 21  F2 00 F2 21 F2 00 21 80
*	0000.0050  F2 00 F2 F2 F2 00 80 80  80 00 F2 80 80 00 80 F2
*	0000.0060  80 00 F2 F2 80 00 80 80  F2 00 F2 80 F2 00 80 F2
*	0000.0070  F2 00 F2 F2 F2 00 21 21  21 00 2E 21 29 00 44 21
*	0000.0080  21 00 55 21 21 00 4E 21  2E 00 4E 44 21 00 55 21
*	    :
*	    :
*	0000.0400  F1 00 DC EA F1 00 D4 F2  F1 00 F2 F2 F1 00 EA F2
*	0000.0410  F1 00 EA F2 F1 00 DC F2  F1 00 F2 F2 F1 00 EA F2
*	0000.0420  F1 00 F2 F1 F1 00 F2 F1  F2 00 F1 F2 F1 00 F2 F2
*	0000.0430  F2 00 F2 F3 F2 00|08 08  08 08 08 08 08 08 08 08
*	0000.0440  08 08 08 08 08 08 08 08  08 08 08 08 08 08 08 08
*	    :
*	    :
*	0000.06B0  08 08 08 08 08 08|08 08  08 08 08 08 08 08 08 08
*	0000.06C0  08 08 08 08 08 08 08 08  08 08 08 08 08 08 08 08
*	    :
*	    :
*	0004.B400  08 08 08 08 08 08 08 08  08 08 08 08 08 08 08 08
*	0004.B410  08 08 08 08 08 08 08 08  08 08 08 08 08 08 08 08
*	0004.B420  08 08 08 08 08 08 08 08  08 08 08 08 08 08 08 08
*	0004.B430  08 08 08 08 08 08|
*/


/*******************************************************************************
* Compressed 256-color BMP
*
*	00000	42 4D		magic, `BM'			\
*	00002	D7 DF 01 00	file size, 0x01DFD7 122839	|
*	00006	00 00 00 00	(reserved)			|
*	0000A	36 04 00 00	header + color map size, 1078	|
*								|
*	0000E	28 00 00 00	this subheader size, 40		|
*	00012	80 02 00 00	image width, 640 pixels		|
*	00016	E0 01 00 00	image depth, 480 pixels		|
*	0001A	01 00		number of bit planes, 1		|
*	0001C	08 00		bits per pixel, 8 (256 colors)	|
*	0001E	01 00 00 00	compression type, 1 (RLE)	|
*	00022	00 00 00 00	image size, bytes (or zero)	|
*	00026	00 00 00 00	X pels per meter, 0		|
*	0002A	00 00 00 00	Y pels per meter, 0		|
*	0002E	00 00 00 00	colors used (or zero)		|
*	00032	00 00 00 00	important colors (or zero)	/
*
*	00036	21 21 21 00	RGB for color 00 (b,g,r,a)	\
*	0003A	F2 21 21 00	RGB for color 01		|
*	0003E	21 F2 21 00	RGB for color 02		+- RGB map
*	  :	 :		 :				|
*	00432	F2 F3 F2 00	RGB for color FF		/
*
*	00436	FF 08		RLE pixel data
*	00438	FF 08		 :	(left to right, bottom to top)
*	  :	 :		 :
*	1DFCF	FF 08		 :	(count + value)
*	1DFD1	82 08		 :	(count + value)
*	1DFD3	00 00		 :	(end of line padding)
*	1DFD5	00 01		 :	(end of file padding?)
*	1DFD7	<eof>		end of file
*
*	0000.0000  42 4D D7 DF 01 00 00 00  00 00 36 04 00 00 28 00
*	0000.0010  00 00 80 02 00 00 E0 01  00 00 01 00 08 00 01 00
*	0000.0020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
*	0000.0030  00 00 00 00 00 00|21 21  21 00 F2 21 21 00 21 F2
*	0000.0040  21 00 F2 F2 21 00 21 21  F2 00 F2 21 F2 00 21 80
*	    :
*	    :
*	0000.0400  F1 00 DC EA F1 00 D4 F2  F1 00 F2 F2 F1 00 EA F2
*	0000.0410  F1 00 EA F2 F1 00 DC F2  F1 00 F2 F2 F1 00 EA F2
*	0000.0420  F1 00 F2 F1 F1 00 F2 F1  F2 00 F1 F2 F1 00 F2 F2
*	0000.0430  F2 00 F2 F2 F2 00 FF 08  FF 08 82 08 00 00 FF 08
*	0000.0440  FF 08 82 08 00 00|FF 08  FF 08 82 08 00 00 FF 08
*	0000.0450  FF 08 82 08 00 00 FF 08  FF 08 82 08 00 00 FF 08
*	0000.0460  FF 08 82 08 00 00 FF 08  FF 08 82 08 00 00 FF 08
*	0000.0470  FF 08 82 08 00 00 FF 08  FF 08 82 08 00 00 FF 08  ÿ
*	0000.0480  FF 08 82 08 00 00 FF 08  FF 08 82 08 00 00 FF 08
*	    :
*	    :
*	0001.DE80  58 5A 4F 64 00 05 64 58  58 4A 4D 03 4D 00 0E 4B
*	0001.DE90  60 67 41 4D 5B 63 5B 67  5A 4F 58 67 59 00 15 59
*	0001.DEA0  4A 51 68 60 4C 64 4B 64  5A 5B 4D 4A 4F 4A 58 4A
*	0001.DEB0  67 5A 19 00 02 00 00 03  FF 08 08 D4 08 00 00 BA
*	0001.DEC0  08 00 03 FF 00 00 EC 00  00 03 FF 08 08 D4 08 00
*	0001.DED0  00 BA 08 00 03 FF 00 00  EC 00 00 03 FF 08 08 D4
*	0001.DEE0  08 00 00 BA 08 00 03 FF  00 00 EC 00 00 03 FF 08
*	0001.DEF0  08 D4 08 00 00 BA 08 F0  FF D6 08 00 00 FF 08 FF
*	0001.DF00  08 82 08 00 00 FF 08 FF  08 82 08 00 00 FF 08 FF
*	0001.DF10  08 82 08 00 00 FF 08 FF  08 82 08 00 00 FF 08 FF
*	0001.DF20  08 82 08 00 00 FF 08 FF  08 82 08 00 00 FF 08 FF
*	0001.DF30  08 82 08 00 00 FF 08 FF  08 82 08 00 00 FF 08 FF
*	0001.DF40  08 82 08 00 00 FF 08 FF  08 82 08 00 00 FF 08 FF
*	0001.DF50  08 82 08 00 00 FF 08 FF  08 82 08 00 00 FF 08 FF
*	0001.DF60  08 82 08 00 00 FF 08 FF  08 82 08 00 00 FF 08 FF
*	0001.DF70  08 82 08 00 00 FF 08 FF  08 82 08 00 00 FF 08 FF
*	0001.DF80  08 82 08 00 00 FF 08 FF  08 82 08 00 00 FF 08 FF
*	0001.DF90  08 82 08 00 00 FF 08 FF  08 82 08 00 00 FF 08 FF
*	0001.DFA0  08 82 08 00 00 FF 08 FF  08 82 08 00 00 FF 08 FF
*	0001.DFB0  08 82 08 00 00 FF 08 FF  08 82 08 00 00 FF 08 FF
*	0001.DFC0  08 82 08 00 00 FF 08 FF  08 82 08 00 00 FF 08 FF
*	0001.DFD0  08 82 08 00 00 00 01|
*/


/*******************************************************************************
* Uncompressed 16-color BMP
*
*	00000	42 4D		id		`BM'		\
*	00002	66 01 00 00	filesize	358		|
*	00006	00 00 00 00	reserved			|
*	0000A	76 00 00 00	headersize	118		|
*								|
*	0000E	28 00 00 00	infoSize	40		|
*	00012	17 00 00 00	width		23		|
*	00016	14 00 00 00	depth		20		|
*	0001A	01 00		biPlanes	1		+- header
*	0001C	04 00		bits		4, 16 colors	|
*	0001E	00 00 00 00	biCompression	0		|
*	00022	00 00 00 00	biSizeImage	0		|
*	00026	00 00 00 00	biXPelsPerMeter	0, 0 dpi	|
*	0002A	00 00 00 00	biYPelsPerMeter	0, 0 dpi	|
*	0002E	00 00 00 00	biClrUsed	0		|
*	00032	00 00 00 00	biClrImportant	0		/
*
*	00036	00 00 00 00	RGB for color 0 (b,g,r,a)	\
*	0003A	00 00 00 00	RGB for color 1			|
*	0003E	00 00 00 00	RGB for color 2			|
*	00042	00 00 00 00	RGB for color 3			|
*	00046	00 00 00 00	RGB for color 4			|
*	0004A	00 00 00 00	RGB for color 5			|
*	0004E	00 00 00 00	RGB for color 6			|
*	00052	00 00 00 00	RGB for color 7			|
*	00056	00 00 00 00	RGB for color 8			+- RBG map
*	0005A	00 00 00 00	RGB for color 9			|
*	0005E	00 00 00 00	RGB for color A			|
*	00062	00 00 00 00	RGB for color B			|
*	00066	00 00 00 00	RGB for color C			|
*	0006A	00 00 00 00	RGB for color D			|
*	0006E	00 00 00 00	RGB for color E			|
*	00072	FF FF FF 00	RGB for color F			/
*
*	00076	FF FF FF FF	pixel data, line 19		\
*		FF FF FF FF					|
*		FF FF FF 00	plus padding bytes		|
*	00082	FF FF FF FF	pixel data, line 18		|
*		FF FF FF FF					+- pixels
*		FF FF FF 00	plus padding bytes		|
*	  :	 :		:				|
*	0015A	FF FF FF FF	pixel data, line 0		|
*		FF FF FF FF					|
*		FF FF FF 00	plus padding bytes		/
*	00166	<eof>
*
*
*	00000|42 4D 66 01 00 00 00 00 00 00 76 00 00 00 28 00
*	00010 00 00 17 00 00 00 14 00 00 00 01 00 04 00 00 00
*	00020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
*	00030 00 00 00 00 00 00|00 00 00 00,00 00 00 00,00 00
*	00040 00 00,00 00 00 00,00 00 00 00,00 00 00 00,00 00
*	00050 00 00,00 00 00 00,00 00 00 00,00 00 00 00,00 00
*	00060 00 00,00 00 00 00,00 00 00 00,00 00 00 00,00 00
*	00070 00 00,FF FF FF 00|FF FF FF FF FF FF FF FF FF FF
*	00080 FF F0,FF FF FF FF FF FF FF FF FF FF FF F0,FF FF
*	00090 FF FF FF FF FF FF FF FF FF F0,FF FF FF FF FF FF
*	000A0 FF FF FF FF FF F0,FF FF FF FF FF FF FF FF FF FF
*	000B0 FF F0,FF FF FF FF FF FF FF FF FF FF FF F0,FF FF
*	000C0 FF FF FF FF FF FF FF FF FF F0,FF FF FF FF FF FF
*	000D0 FF FF FF FF FF F0,FF FF FF FF FF FF FF FF FF FF
*	000E0 FF F0,FF FF FF FF FF FF FF FF FF FF FF F0,FF FF
*	000F0 FF FF FF FF FF FF FF FF FF F0,FF FF FF FF FF FF
*	00100 FF FF FF FF FF F0,FF FF FF FF FF FF FF FF FF FF
*	00110 FF F0,FF FF FF FF FF FF FF FF FF FF FF F0,FF FF
*	00120 FF FF FF FF FF FF FF FF FF F0,FF FF FF FF FF FF
*	00130 FF FF FF FF FF F0,FF FF FF FF FF FF FF FF FF FF
*	00140 FF F0,FF FF FF FF FF FF FF FF FF FF FF F0,FF FF
*	00150 FF FF FF FF FF FF FF FF FF F0,FF FF FF FF FF FF
*	00160 FF FF FF FF FF F0|
*/


/*******************************************************************************
* Uncompressed 2-color BMP
*
*	00000	42 4D		magic, `BM'			\
*	00002	3E 18 00 00	file size, 0x00183E 6206	|
*	00006	00 00 00 00	(reserved)			|
*	0000A	3E 00 00 00	header + color map size, 62	|
*								|
*	0000E	28 00 00 00	this subheader size, 40		|
*	00012	C0 00 00 00	image width, 192 pixels		|
*	00016	00 01 00 00	image depth, 256 pixels		|
*	0001A	01 00		number of bit planes, 1		+- header
*	0001C	01 00		bits per pixel, 1 (2 colors)	|
*								|
*	0001E	00 00 00 00	compression type, 0 (none)	|
*	00022	00 00 00 00	image size, bytes (or zero)	|
*	00026	61 0F 00 00	X pels per meter, 3937		|
*	0002A	61 0F 00 00	Y pels per meter, 3937		|
*	0002E	00 00 00 00	colors used (or zero)		|
*	00032	00 00 00 00	important colors (or zero)	/
*
*	00036	00 00 00 00	RGB for color 00 (b,g,r,a)	\
*	0003A	FF FF FF 00	RGB for color 01		/-- RGB map
*
*	0003E	28 90 25 AF	pixel data bytes (8 pixels per byte)
*	  :	 :		 :	(left to right, bottom to top)
*	00056	55 55 55 54	 :
*	  :	 :		 :
*	0006E	91 46 1A 55	 :
*	  :	 :		 :
*	0183A	82 04 0A 45	 :
*	0183E	<eof>		end of file
*
*	0000.0000  42 4D 3E 18 00 00 00 00  00 00 3E 00 00 00 28 00
*	0000.0010  00 00 C0 00 00 00 00 01  00 00 01 00 01 00 00 00
*	0000.0020  00 00 00 00 00 00 61 0F  00 00 61 0F 00 00 00 00
*	0000.0030  00 00 00 00 00 00|00 00  00 00 FF FF FF 00|28 90
*	0000.0040  25 AF 3D 59 0A 98 0A 92  34 F5 7D 80 00 62 28 89
*	0000.0050  75 5C AD 40 14 00|55 55  54 00 80 A2 54 A7 58 16
*	0000.0060  00 33 A5 60 02 90 2F 30  8E A5 EB 02 01 18|91 46
*	0000.0070  1A 55 24 85 4A 48 62 21  00 AF 5D 50 00 0D 06 85
*	0000.0080  35 10 3C 85 12 05 72 8C  65 54 CA 78 92 A6 91 A9
*	0000.0090  80 B5 EB 48 00 E0 01 AA  E8 09 E9 20 83 42 09 92
*	0000.00A0  89 95 21 85 68 34 13 80  01 A6 57 3A 02 50 25 41
*	0000.00B0  45 04 63 01 44 90 62 58  28 29 53 1A 15 85 CF 00
*	0000.00C0  03 0E BE F4 00 00 01 B1  B6 69 90 80 91 49 55 22
*	0000.00D0  AD 48 AE E0 B3 22 2A 00  00 50 C9 53 00 4A 01 44
*	0000.00E0  4A 91 2F 90 82 A8 49 CA  91 51 20 05 04 54 92 00
*	0000.00F0  00 19 2C A4 80 00 02 94  F0 65 6A 8F 28 51 52 11
*	0000.0100  24 96 9A 9A 69 4A A5 D0  00 04 A9 55 00 02 40 C6
*	 :
*	 :
*	0000.1800  A4 49 81 42 8A 0A 45 22  85 4B 94 8A 82 AD 58 94
*	0000.1810  00 C5 B9 56 4E 59 26 57  48 92 28 B5 22 C8 92 CA
*	0000.1820  39 90 5A F3 D5 50 42 49  55 14 02 48 90 82 50 90
*	0000.1830  15 24 95 44 54 95 54 94  A2 2A 82 04 0A 45|
*/


/*******************************************************************************
* Uncompressed 24-bit color BMP
*
*	00000	42 4D		id		`BM'
*	00002	EB 02 00 00	filesize	747
*	00006	00 00 00 00	r		00 00 00 00
*	0000A	36 00 00 00	headersize	54
*
*	0000E	28 00 00 00	infosize	40	\
*	00012	17 00 00 00	width		23	|
*	00016	14 00 00 00	depth		20	|
*	0001A	01 00		biplanes	1	|
*	0001C	18 00		bits		24	|
*							|
*	0001E	00 00 00 00	compression	0=none	+- info
*	00022	A0 05 00 00	sizeimage	1440	|
*	00026	61 0F 00 00	Xpels		3937	|
*	0002A	61 0F 00 00	Ypels		3937	|
*	0002E	00 00 00 00	clrused		0	|
*	00032	00 00 00 00	clrimportant	0	/
*
*	(no color map)
*
*	00036			line 19, RGB pixel data (b,g,r)
*		FF FE FF  FF FF FF  FF FF FF  FF FF FF  FF FF FF
*		FF FE FF  FF FF FF  FF FF FF  FF FF FE  FF FF FE
*		FF FE FF  FF FE FF  FF FF FF  FF FD FF  FF FE FE
*		FF FF FF  FF FF FF  FF FF FF  FF FF FF  FF FF FF
*		FF FF FF  FF FF FF  FF FF FF
*		00 14 01
*	0007E			line 18
*		FF FE FF  FF FF FF  FF FF FF  FF FF FF  FF FF FF
*		FF FE FF  FF FF FF  FF FF FF  FF FF FF  FF FF FF
*		FF FF FF  FF FF FF  FF FF FF  FF FF FF  FF FF FF
*		FF FF FF  FF FF FF  FF FF FF  FF FF FF  FF FF FF
*		FF FF FF  FF FF FF  FF FF FF
*		00 14 01
*	000C6			line 17
*	  :
*	  :
*	0058E			line 0
*	  	FF FE FF  FF FF FF  FF FE FF  FE FE FF  FF FF FF
*		FF FF FF  FF FF FF  FF FF FF  FF FF FF  FF FF FF
*		FF FE FF  FF FE FF  FF FF FF  FF FF FF  FF FF FF
*		FF FF FF  FF FF FF  FF FF FF  FF FF FF  FF FF FF
*		FF FF FF  FF FF FF  FF FF FF
*		00 14 01
*	005D6	<eof>
*/


/*******************************************************************************
* Uncompressed OS/2 4-bit color BMP
*
*	00000	42 4D		id		`BM'
*	00002	B2 06 00 00	filesize	1714
*	00006	00 00 00 00	r		00 00 00 00
*	0000A	4A 00 00 00	headersize	74 (incl map)
*
*	0000E	0C 00 00 00	infosize	12		\
*	00012	50 00		width		80		|
*	00014	29 00		depth		41		+- info
*	00016	01 00		biplanes	1		|
*	00018	04 00		bits		4		/
*
*	0001A	00 00 00	RGB for color 0, (b,g,r)?	\
*	0001D	00 00 BF	:				|
*	00020	00 BF 00	:				|
*	00023	00 BF BF	:				|
*	00026	BF 00 00	:				|
*	00029	BF 00 BF	:				|
*	0002C	BF BF 00	:				|
*	0002F	C0 C0 C0	:				+- RGB map
*	00032	80 80 80	:				|
*	00035	00 00 FF	:				|
*	00038	00 FF 00	:				|
*	0003B	00 FF FF	:				|
*	0003E	FF 00 00	:				|
*	00041	FF 00 FF	:				|
*	00044	FF FF 00	:				|
*	00047	FF FF FF	RGB for color F			/
*
*	0004A	FF FF FF FF	pixel data, two per byte, 1640 bytes
*	 :	 :
*	 :	 :
*	006AE	FF FF FF FF
*	006B2	<eof>
*
*	0000.0000	42 4D,B2 06 00 00,00 00  00 00,4A 00 00 00,0C 00
*	0000.0010	00 00,50 00,29 00,01 00, 04 00|00 00 00 00,00 BF
*	0000.0020	00 BF,00 00 BF BF,BF 00  00 BF,00 BF BF BF,00 C0
*	0000.0030	C0 C0,80 80 80 00,00 FF  00 FF,00 00 FF FF,FF 00
*	0000.0040	00 FF 00 FF FF FF 00 FF  FF FF|FF FF FF FF FF FF
*	0000.0050	FF FF FF FF FF FF FF FF  FF FF FF FF FF FF FF FF
*	 :
*	 :
*	0000.0670	00 00 00 0F 0F FF FF FF  FF F8 0F FF FF FF FF FF
*	0000.0680	FF FF FF FF FF FF FF FF  FF F0 FF FF FF FF FF FF
*	0000.0690	FF FF FF FF FF FF FF 87  F0 00 07 0F 0F FF FF FF
*	0000.06A0	FF F8 0F FF FF FF FF FF  FF FF FF FF FF FF FF FF
*	0000.06B0	FF FF .. .. .. .. .. ..  .. .. .. .. .. .. .. ..
*/


/* Name aliases for each memory model (ain't DOS a bitch?) */

#if defined(__SMALL__)

#define bmp_file		Sbmp_file
#define BMP_FILE		sBMP_FILE

#define bmp_palette16		Sbmp_palette16
#define bmp_pow2		Sbmp_pow2

#define bmp_close		Sbmp_close
#define bmp_dump_hdr		Sbmp_dump_hdr
#define bmp_dump_rgbtab		Sbmp_dump_rgbtab
#define bmp_open		Sbmp_open
#define bmp_read_byte		Sbmp_read_byte
#define bmp_read_eoln		Sbmp_read_eoln
#define bmp_read_hdr		Sbmp_read_hdr
#define bmp_read_pixel		Sbmp_read_pixel
#define bmp_read_rgb		Sbmp_read_rgb
#define bmp_read_rgbtab		Sbmp_read_rgbtab
#define bmp_write_eof		Sbmp_read_eof
#define bmp_write_eoln		Sbmp_write_eoln
#define bmp_write_hdr		Sbmp_write_hdr
#define bmp_write_pixel		Sbmp_write_pixel
#define bmp_write_rgb		Sbmp_write_rgb
#define bmp_write_rgbtab	Sbmp_write_rgbtab

#elif defined(__COMPACT__)

#define bmp_file		Cbmp_file
#define BMP_FILE		cBMP_FILE

#define bmp_palette16		Cbmp_palette16
#define bmp_pow2		Cbmp_pow2

#define bmp_close		Cbmp_close
#define bmp_dump_hdr		Cbmp_dump_hdr
#define bmp_dump_rgbtab		Cbmp_dump_rgbtab
#define bmp_open		Cbmp_open
#define bmp_read_byte		Cbmp_read_byte
#define bmp_read_eoln		Cbmp_read_eoln
#define bmp_read_hdr		Cbmp_read_hdr
#define bmp_read_pixel		Cbmp_read_pixel
#define bmp_read_rgb		Cbmp_read_rgb
#define bmp_read_rgbtab		Cbmp_read_rgbtab
#define bmp_write_eof		Cbmp_read_eof
#define bmp_write_eoln		Cbmp_write_eoln
#define bmp_write_hdr		Cbmp_write_hdr
#define bmp_write_pixel		Cbmp_write_pixel
#define bmp_write_rgb		Cbmp_write_rgb
#define bmp_write_rgbtab	Cbmp_write_rgbtab

#elif defined(__MEDIUM__)

#define bmp_file		Mbmp_file
#define BMP_FILE		mBMP_FILE

#define bmp_palette16		Mbmp_palette16
#define bmp_pow2		Mbmp_pow2

#define bmp_close		Mbmp_close
#define bmp_dump_hdr		Mbmp_dump_hdr
#define bmp_dump_rgbtab		Mbmp_dump_rgbtab
#define bmp_open		Mbmp_open
#define bmp_read_byte		Mbmp_read_byte
#define bmp_read_eoln		Mbmp_read_eoln
#define bmp_read_hdr		Mbmp_read_hdr
#define bmp_read_pixel		Mbmp_read_pixel
#define bmp_read_rgb		Mbmp_read_rgb
#define bmp_read_rgbtab		Mbmp_read_rgbtab
#define bmp_write_eof		Mbmp_read_eof
#define bmp_write_eoln		Mbmp_write_eoln
#define bmp_write_hdr		Mbmp_write_hdr
#define bmp_write_pixel		Mbmp_write_pixel
#define bmp_write_rgb		Mbmp_write_rgb
#define bmp_write_rgbtab	Mbmp_write_rgbtab

#elif defined(__LARGE__)

#define bmp_file		Lbmp_file
#define BMP_FILE		lBMP_FILE

#define bmp_palette16		Lbmp_palette16
#define bmp_pow2		Lbmp_pow2

#define bmp_close		Lbmp_close
#define bmp_dump_hdr		Lbmp_dump_hdr
#define bmp_dump_rgbtab		Lbmp_dump_rgbtab
#define bmp_open		Lbmp_open
#define bmp_read_byte		Lbmp_read_byte
#define bmp_read_eoln		Lbmp_read_eoln
#define bmp_read_hdr		Lbmp_read_hdr
#define bmp_read_pixel		Lbmp_read_pixel
#define bmp_read_rgb		Lbmp_read_rgb
#define bmp_read_rgbtab		Lbmp_read_rgbtab
#define bmp_write_eof		Lbmp_read_eof
#define bmp_write_eoln		Lbmp_write_eoln
#define bmp_write_hdr		Lbmp_write_hdr
#define bmp_write_pixel		Lbmp_write_pixel
#define bmp_write_rgb		Lbmp_write_rgb
#define bmp_write_rgbtab	Lbmp_write_rgbtab

#elif defined(__HUGE__)

#define bmp_file		Hbmp_file
#define BMP_FILE		hBMP_FILE

#define bmp_palette16		Hbmp_palette16
#define bmp_pow2		Hbmp_pow2

#define bmp_close		Hbmp_close
#define bmp_dump_hdr		Hbmp_dump_hdr
#define bmp_dump_rgbtab		Hbmp_dump_rgbtab
#define bmp_open		Hbmp_open
#define bmp_read_byte		Hbmp_read_byte
#define bmp_read_eoln		Hbmp_read_eoln
#define bmp_read_hdr		Hbmp_read_hdr
#define bmp_read_pixel		Hbmp_read_pixel
#define bmp_read_rgb		Hbmp_read_rgb
#define bmp_read_rgbtab		Hbmp_read_rgbtab
#define bmp_write_eof		Hbmp_read_eof
#define bmp_write_eoln		Hbmp_write_eoln
#define bmp_write_hdr		Hbmp_write_hdr
#define bmp_write_pixel		Hbmp_write_pixel
#define bmp_write_rgb		Hbmp_write_rgb
#define bmp_write_rgbtab	Hbmp_write_rgbtab

#else

/* No memory model defined (e.g., Win32), aliases are not necessary */

#endif


/*******************************************************************************
* struct os2_bmp_header
*	OS/2 bitmap (BMP) file header.
*/

struct os2_bmp_header
{
    unsigned int16	id;		/* identification magic number	*/
    unsigned int32	filesize;	/* file length			*/
    unsigned char	r[4];		/* (reserved, zeros)		*/
    unsigned int32	headersize;	/* header size			*/

    unsigned int32	infoSize;	/* subheader size (12)		*/
    unsigned int16	width;		/* image width, pixels		*/
    unsigned int16	depth;		/* image height, pixels		*/
    unsigned int16	biPlanes;	/* number of bit planes		*/
    unsigned int16	bits;		/* bits per pixel		*/
};

#define OS2_BMP_HEADER_VS	1


/*******************************************************************************
* struct bmp_header
*	Bitmap (BMP) file header.
*/

struct bmp_header
{
    unsigned int16	id;		/* identification magic number	*/
    unsigned int32	filesize;	/* file length			*/
    unsigned char	r[4];		/* (reserved, zeros)		*/
    unsigned int32	headersize;	/* header size			*/

    unsigned int32	infoSize;	/* subheader size (40)		*/
    unsigned int32	width;		/* image width, pixels		*/
    unsigned int32	depth;		/* image height, pixels		*/
    unsigned int16	biPlanes;	/* number of bit planes		*/
    unsigned int16	bits;		/* bits per pixel		*/

    unsigned int32	biCompression;	/* compression type		*/
    unsigned int32	biSizeImage;	/* image size, bytes (or zero)	*/
    unsigned int32	biXPelsPerMeter;/* horiz image resolution	*/
    unsigned int32	biYPelsPerMeter;/* vert  image resolution	*/
    unsigned int32	biClrUsed;	/* colors used (or zero)	*/
    unsigned int32	biClrImportant;	/* important colors (or zero)	*/
};

#define BMP_HEADER_VS	1
#define BMP_HDR_MAGIC	0x4D42		/* file magic number		*/

#define BMP_CMP_NONE	0L		/* no compression		*/
#define BMP_CMP_RLE8	1L		/* 8-bit run-length encoding	*/
#define BMP_CMP_RLE4	2L		/* 4-bit run-length encoding	*/


/*******************************************************************************
* struct bmp_rgb
*	BMP RGB palette entry.
*/

struct bmp_rgb
{
    unsigned char	b;		/* blue  value			*/
    unsigned char	g;		/* green value			*/
    unsigned char	r;		/* red   value			*/
    unsigned char	a;		/* alpha value			*/
};


/*******************************************************************************
* struct os2_bmp_rgb
*	OS/2 BMP RGB palette entry.
*/

struct os2_bmp_rgb
{
    unsigned char	b;		/* blue  value			*/
    unsigned char	g;		/* green value			*/
    unsigned char	r;		/* red   value			*/
};


/*******************************************************************************
* struct bmp_rgbpix
*	BMP 24-bit RGB pixel.
*/

struct bmp_rgbpix
{
    unsigned char	b;		/* blue  component		*/
    unsigned char	g;		/* green component		*/
    unsigned char	r;		/* red   component		*/
};


/*******************************************************************************
* struct bmp_file
*	BMP file control info.
*/

struct bmp_file
{
    struct bmp_header	h;		/* header info			*/
    FILE *		fp;		/* file stream			*/
    struct bmp_rgb *	map;		/* RGB color table		*/
    unsigned int	flags;		/* bitflags			*/
    int			mode;		/* open mode			*/
    unsigned int	ncols;		/* colors in palette		*/
    unsigned int	linesz;		/* bytes per line (4j)		*/
    unsigned int	byteno;		/* current byte number of line	*/
    unsigned char	rep;		/* repeat count			*/
    unsigned char	pix;		/* repeated pixel value		*/
    unsigned char	byte;		/* current pixels byte		*/
    unsigned char	bitno;		/* current pixel bit number	*/
};

typedef struct bmp_file	BMP_FILE;

#define BMP_FILE_VS	1
#define BMP_FILE_F_OS2	0x0001		/* OS/2 BMP file		*/
#define BMP_FILE_F_RGB3	0x0002		/* RGB map entries are <b,g,r>	*/


/* Public variables */

extern struct bmp_rgb	bmp_palette16[0x10];
extern unsigned int	bmp_pow2[];


/* Public functions */

extern int		bmp_close(BMP_FILE *fp);
extern int		bmp_dump_hdr(FILE *out, const struct bmp_header *h);
extern int		bmp_dump_rgbtab(FILE *out, const struct bmp_rgb tab[],
			    unsigned num);
extern BMP_FILE *	bmp_open(const char *name, int mode);
extern int		bmp_read_byte(BMP_FILE *fp);
extern int		bmp_read_eoln(BMP_FILE *fp);
extern int		bmp_read_hdr(BMP_FILE *fp);
extern int32		bmp_read_pixel(BMP_FILE *fp);
extern int		bmp_read_rgb(BMP_FILE *fp, struct bmp_rgbpix *color);
extern int		bmp_read_rgbtab(BMP_FILE *fp, struct bmp_rgb tab[]);
extern int		bmp_write_eof(BMP_FILE *fp);
extern int		bmp_write_eoln(BMP_FILE *fp);
extern int		bmp_write_hdr(BMP_FILE *fp);
extern int		bmp_write_pixel(BMP_FILE *fp, int32 pix);
extern int		bmp_write_rgb(BMP_FILE *fp, struct bmp_rgbpix *color);
extern int		bmp_write_rgbtab(BMP_FILE *fp,
			    const struct bmp_rgb tab[], unsigned num);


#ifdef __cplusplus
}
#endif

#endif /* drt_bmp_h */

/* End bmp.h */