#include <string.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	readHeaderPnm (const char filename, PIX ppix, l_int32 pwidth, l_int32 pheight, l_int32 pdepth, l_int32 ptype, l_int32 pbps, l_int32 *pspp)
l_int32	freadHeaderPnm (FILE fp, PIX ppix, l_int32 pwidth, l_int32 pheight, l_int32 pdepth, l_int32 ptype, l_int32 pbps, l_int32 *pspp)
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	sreadHeaderPnm (const l_uint8 cdata, size_t size, l_int32 pwidth, l_int32 pheight, l_int32 pdepth, l_int32 ptype, l_int32 pbps, l_int32 *pspp)
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

l_int32 freadHeaderPnm	(	FILE *	fp,
		PIX **	ppix,
		l_int32 *	pwidth,
		l_int32 *	pheight,
		l_int32 *	pdepth,
		l_int32 *	ptype,
		l_int32 *	pbps,
		l_int32 *	pspp
	)

freadHeaderPnm()

Input: stream opened for read &pix (<optional return>=""> use null to return only header data) &width (<return>) &height (<return>) &depth (<return>) &type (<return> pnm type) &bps (<optional return>="">, bits/sample) &spp (<optional return>="">, samples/pixel) Return: 0 if OK, 1 on error

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

l_int32 readHeaderPnm	(	const char *	filename,
		PIX **	ppix,
		l_int32 *	pwidth,
		l_int32 *	pheight,
		l_int32 *	pdepth,
		l_int32 *	ptype,
		l_int32 *	pbps,
		l_int32 *	pspp
	)

readHeaderPnm()

Input: filename &pix (<optional return>=""> use null to return only header data) &width (<return>) &height (<return>) &depth (<return>) &type (<return> pnm type) &bps (<optional return>="">, bits/sample) &spp (<optional return>="">, samples/pixel) Return: 0 if OK, 1 on error

l_int32 sreadHeaderPnm	(	const l_uint8 *	cdata,
		size_t	size,
		l_int32 *	pwidth,
		l_int32 *	pheight,
		l_int32 *	pdepth,
		l_int32 *	ptype,
		l_int32 *	pbps,
		l_int32 *	pspp
	)

Переменные

const l_int32 MAX_PNM_HEIGHT = 100000 [static]

const l_int32 MAX_PNM_WIDTH = 100000 [static]