Файл bmpio.c

#include <string.h>
#include "allheaders.h"
#include "bmp.h"

Макросы
#define	DEBUG   0

Функции
PIX *	pixReadStreamBmp (FILE *fp)
l_int32	pixWriteStreamBmp (FILE *fp, PIX *pix)
FILE *	open_memstream (char **data, size_t *size)
FILE *	fmemopen (void *data, size_t size, const char *mode)
PIX *	pixReadMemBmp (const l_uint8 *cdata, size_t size)
l_int32	pixWriteMemBmp (l_uint8 **pdata, size_t *psize, PIX *pix)

Переменные
RGBA_QUAD	bwmap [2] = { {255,255,255,255}, {0,0,0,255} }
static const l_int32	L_MAX_ALLOWED_NUM_COLORS = 256
static const l_int32	L_MAX_ALLOWED_WIDTH = 1000000
static const l_int32	L_MAX_ALLOWED_HEIGHT = 1000000
static const l_int64	L_MAX_ALLOWED_AREA = 400000000LL

Макросы

DEBUG

#define DEBUG   0

Функции

fmemopen()

FILE* fmemopen	(	void *	data,
		size_t	size,
		const char *	mode
	)

open_memstream()

FILE* open_memstream	(	char **	data,
		size_t *	size
	)

pixReadMemBmp()

PIX* pixReadMemBmp	(	const l_uint8 *	cdata,
		size_t	size
	)

pixReadMemBmp()

Input:  cdata (const; bmp-encoded)
        size (of data)
Return: pix, or null on error

Notes: (1) The @size byte of @data must be a null character.

pixReadStreamBmp()

PIX* pixReadStreamBmp

(

FILE *

fp

)

pixReadStreamBmp()

Input:  stream opened for read
Return: pix, or null on error

Notes: (1) Here are references on the bmp file format: http://en.wikipedia.org/wiki/BMP_file_format http://www.fortunecity.com/skyscraper/windows/364/bmpffrmt.html

pixWriteMemBmp()

l_int32 pixWriteMemBmp	(	l_uint8 **	pdata,
		size_t *	psize,
		PIX *	pix
	)

pixWriteMemBmp()

Input:  &data (<return> data of tiff compressed image)
        &size (<return> size of returned data)
        pix
Return: 0 if OK, 1 on error

Notes: (1) See pixWriteStreamBmp() for usage. This version writes to memory instead of to a file stream.

pixWriteStreamBmp()

l_int32 pixWriteStreamBmp	(	FILE *	fp,
		PIX *	pix
	)

pixWriteStreamBmp()

Input:  stream opened for write
        pix (1, 4, 8, 32 bpp)
Return: 0 if OK, 1 on error

Notes: (1) We position fp at the beginning of the stream, so it truncates any existing data (2) 2 bpp Bmp files are apparently not valid!. We can write and read them, but nobody else can read ours.

Переменные

bwmap

RGBA_QUAD bwmap[2] = { {255,255,255,255}, {0,0,0,255} }

L_MAX_ALLOWED_AREA

const l_int64 L_MAX_ALLOWED_AREA = 400000000LL

static

L_MAX_ALLOWED_HEIGHT

const l_int32 L_MAX_ALLOWED_HEIGHT = 1000000

static

L_MAX_ALLOWED_NUM_COLORS

const l_int32 L_MAX_ALLOWED_NUM_COLORS = 256

static

L_MAX_ALLOWED_WIDTH

const l_int32 L_MAX_ALLOWED_WIDTH = 1000000

static