Файл src/pnmio.c

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "allheaders.h"


Функции
static l_int32	pnmReadNextAsciiValue (FILE fp, l_int32 pval)
static l_int32	pnmSkipCommentLines (FILE *fp)
PIX *	pixReadStreamPnm (FILE *fp)
l_int32	pixWriteStreamPnm (FILE fp, PIX pix)
l_int32	pixWriteStreamAsciiPnm (FILE fp, PIX pix)
PIX *	pixReadMemPnm (const l_uint8 *cdata, size_t size)
l_int32	pixWriteMemPnm (l_uint8 *pdata, size_t psize, PIX *pix)
Переменные
static const l_int32	MAX_PNM_WIDTH = 100000
static const l_int32	MAX_PNM_HEIGHT = 100000

Функции

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

PIX* pixReadStreamPnm ( FILE * fp )

pixReadStreamPnm()

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

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

l_int32 pixWriteStreamAsciiPnm	(	FILE *	fp,
		PIX *	pix
	)

pixWriteStreamAsciiPnm()

Input: stream opened for write pix Return: 0 if OK; 1 on error

Writes "ascii" format only: 1 bpp --> pbm (P1) 2, 4, 8, 16 bpp, no colormap or grayscale colormap --> pgm (P2) 2, 4, 8 bpp with color-valued colormap, or rgb --> rgb ppm (P3)

l_int32 pixWriteStreamPnm	(	FILE *	fp,
		PIX *	pix
	)

pixWriteStreamPnm()

Input: stream opened for write pix Return: 0 if OK; 1 on error

Notes: (1) This writes "raw" packed format only: 1 bpp --> pbm (P4) 2, 4, 8, 16 bpp, no colormap or grayscale colormap --> pgm (P5) 2, 4, 8 bpp with color-valued colormap, or rgb --> rgb ppm (P6) (2) 24 bpp rgb are not supported in leptonica, but this will write them out as a packed array of bytes (3 to a pixel).

static l_int32 pnmReadNextAsciiValue	(	FILE *	fp,
		l_int32 *	pval
	)			`[static]`

pnmReadNextAsciiValue()

Return: 0 if OK, 1 on error or EOF.

Notes: (1) This reads the next sample value in ascii from the the file.

static l_int32 pnmSkipCommentLines ( FILE * fp ) [static]

pnmSkipCommentLines()

Return: 0 if OK, 1 on error or EOF

Notes: (1) Comment lines begin with '#' (2) Usage: caller should check return value for EOF

Переменные

const l_int32 MAX_PNM_HEIGHT = 100000 [static]

const l_int32 MAX_PNM_WIDTH = 100000 [static]