Leptonica
1.54
|
Функции | |
static l_int32 | pnmReadNextAsciiValue (FILE *fp, l_int32 *pval) |
static l_int32 | pnmReadNextNumber (FILE *fp, l_int32 *pval) |
static l_int32 | pnmSkipCommentLines (FILE *fp) |
PIX * | pixReadStreamPnm (FILE *fp) |
l_int32 | readHeaderPnm (const char *filename, l_int32 *pw, l_int32 *ph, l_int32 *pd, l_int32 *ptype, l_int32 *pbps, l_int32 *pspp) |
l_int32 | freadHeaderPnm (FILE *fp, l_int32 *pw, l_int32 *ph, l_int32 *pd, l_int32 *ptype, l_int32 *pbps, l_int32 *pspp) |
l_int32 | pixWriteStreamPnm (FILE *fp, PIX *pix) |
l_int32 | pixWriteStreamAsciiPnm (FILE *fp, PIX *pix) |
FILE * | open_memstream (char **data, size_t *size) |
FILE * | fmemopen (void *data, size_t size, const char *mode) |
PIX * | pixReadMemPnm (const l_uint8 *cdata, size_t size) |
l_int32 | readHeaderMemPnm (const l_uint8 *cdata, size_t size, l_int32 *pw, l_int32 *ph, l_int32 *pd, 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 |
FILE* fmemopen | ( | void * | data, |
size_t | size, | ||
const char * | mode | ||
) |
l_int32 freadHeaderPnm | ( | FILE * | fp, |
l_int32 * | pw, | ||
l_int32 * | ph, | ||
l_int32 * | pd, | ||
l_int32 * | ptype, | ||
l_int32 * | pbps, | ||
l_int32 * | pspp | ||
) |
Input: stream opened for read &w (<optional return>="">) &h (<optional return>="">) &d (<optional return>="">) &type (<optional return>=""> pnm type) &bps (<optional return>="">, bits/sample) &spp (<optional return>="">, samples/pixel) Return: 0 if OK, 1 on error
FILE* open_memstream | ( | char ** | data, |
size_t * | size | ||
) |
PIX* pixReadMemPnm | ( | const l_uint8 * | cdata, |
size_t | size | ||
) |
Input: cdata (const; pnm-encoded) size (of data) Return: pix, or null on error
Notes: (1) The byte of must be a null character.
PIX* pixReadStreamPnm | ( | FILE * | fp | ) |
Input: stream opened for read Return: pix, or null on error
l_int32 pixWriteMemPnm | ( | l_uint8 ** | pdata, |
size_t * | psize, | ||
PIX * | pix | ||
) |
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 pixWriteStreamPnm() for usage. This version writes to memory instead of to a file stream.
l_int32 pixWriteStreamAsciiPnm | ( | FILE * | fp, |
PIX * | pix | ||
) |
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 | ||
) |
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] |
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 pnmReadNextNumber | ( | FILE * | fp, |
l_int32 * | pval | ||
) | [static] |
Input: file stream &val (<return> value as an integer) Return: 0 if OK, 1 on error or EOF.
Notes: (1) This reads the next set of numeric chars, returning the value and swallowing the trailing whitespace character. This is needed to read the maxval in the header, which precedes the binary data.
static l_int32 pnmSkipCommentLines | ( | FILE * | fp | ) | [static] |
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 readHeaderMemPnm | ( | const l_uint8 * | cdata, |
size_t | size, | ||
l_int32 * | pw, | ||
l_int32 * | ph, | ||
l_int32 * | pd, | ||
l_int32 * | ptype, | ||
l_int32 * | pbps, | ||
l_int32 * | pspp | ||
) |
Input: cdata (const; pnm-encoded) size (of data) &w (<optional return>="">) &h (<optional return>="">) &d (<optional return>="">) &type (<optional return>=""> pnm type) &bps (<optional return>="">, bits/sample) &spp (<optional return>="">, samples/pixel) Return: 0 if OK, 1 on error
l_int32 readHeaderPnm | ( | const char * | filename, |
l_int32 * | pw, | ||
l_int32 * | ph, | ||
l_int32 * | pd, | ||
l_int32 * | ptype, | ||
l_int32 * | pbps, | ||
l_int32 * | pspp | ||
) |
Input: filename &w (<optional return>="">) &h (<optional return>="">) &d (<optional return>="">) &type (<optional return>=""> pnm type) &bps (<optional return>="">, bits/sample) &spp (<optional return>="">, samples/pixel) Return: 0 if OK, 1 on error
const l_int32 MAX_PNM_HEIGHT = 100000 [static] |
const l_int32 MAX_PNM_WIDTH = 100000 [static] |