Leptonica
1.54
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Функции | |
PIX * | pixReadStreamSpix (FILE *fp) |
l_int32 | readHeaderSpix (const char *filename, l_int32 *pwidth, l_int32 *pheight, l_int32 *pbps, l_int32 *pspp, l_int32 *piscmap) |
l_int32 | freadHeaderSpix (FILE *fp, l_int32 *pwidth, l_int32 *pheight, l_int32 *pbps, l_int32 *pspp, l_int32 *piscmap) |
l_int32 | sreadHeaderSpix (const l_uint32 *data, l_int32 *pwidth, l_int32 *pheight, l_int32 *pbps, l_int32 *pspp, l_int32 *piscmap) |
l_int32 | pixWriteStreamSpix (FILE *fp, PIX *pix) |
PIX * | pixReadMemSpix (const l_uint8 *data, size_t size) |
l_int32 | pixWriteMemSpix (l_uint8 **pdata, size_t *psize, PIX *pix) |
l_int32 | pixSerializeToMemory (PIX *pixs, l_uint32 **pdata, size_t *pnbytes) |
PIX * | pixDeserializeFromMemory (const l_uint32 *data, size_t nbytes) |
l_int32 freadHeaderSpix | ( | FILE * | fp, |
l_int32 * | pwidth, | ||
l_int32 * | pheight, | ||
l_int32 * | pbps, | ||
l_int32 * | pspp, | ||
l_int32 * | piscmap | ||
) |
Input: stream &width (<return>) &height (<return>) &bps (<return>, bits/sample) &spp (<return>, samples/pixel) &iscmap (<optional return>="">; input NULL to ignore) Return: 0 if OK, 1 on error
Notes: (1) If there is a colormap, iscmap is returned as 1; else 0.
PIX* pixDeserializeFromMemory | ( | const l_uint32 * | data, |
size_t | nbytes | ||
) |
Input: data (serialized data in memory) nbytes (number of bytes in data string) Return: pix, or NULL on error
Notes: (1) See pixSerializeToMemory() for the binary format.
PIX* pixReadMemSpix | ( | const l_uint8 * | data, |
size_t | size | ||
) |
Input: data (const; uncompressed) size (of data) Return: pix, or null on error
PIX* pixReadStreamSpix | ( | FILE * | fp | ) |
Input: stream Return: pix, or null on error.
Notes: (1) If called from pixReadStream(), the stream is positioned at the beginning of the file.
l_int32 pixSerializeToMemory | ( | PIX * | pixs, |
l_uint32 ** | pdata, | ||
size_t * | pnbytes | ||
) |
Input: pixs (all depths, colormap OK) &data (<return> serialized data in memory) &nbytes (<return> number of bytes in data string) Return: 0 if OK, 1 on error
Notes: (1) This does a fast serialization of the principal elements of the pix, as follows: "spix" (4 bytes) -- ID for file type w (4 bytes) h (4 bytes) d (4 bytes) wpl (4 bytes) ncolors (4 bytes) -- in colormap; 0 if there is no colormap cdatasize (4 bytes) -- size of serialized colormap = 4 * (num colors) cdata (cdatasize) rdatasize (4 bytes) -- size of serialized raster data = 4 * wpl * h rdata (rdatasize)
l_int32 pixWriteMemSpix | ( | l_uint8 ** | pdata, |
size_t * | psize, | ||
PIX * | pix | ||
) |
Input: &data (<return> data of serialized, uncompressed pix) &size (<return> size of returned data) pix (all depths; colormap OK) Return: 0 if OK, 1 on error
l_int32 pixWriteStreamSpix | ( | FILE * | fp, |
PIX * | pix | ||
) |
Input: stream pix Return: 0 if OK; 1 on error
l_int32 readHeaderSpix | ( | const char * | filename, |
l_int32 * | pwidth, | ||
l_int32 * | pheight, | ||
l_int32 * | pbps, | ||
l_int32 * | pspp, | ||
l_int32 * | piscmap | ||
) |
Input: filename &width (<return>) &height (<return>) &bps (<return>, bits/sample) &spp (<return>, samples/pixel) &iscmap (<optional return>="">; input NULL to ignore) Return: 0 if OK, 1 on error
Notes: (1) If there is a colormap, iscmap is returned as 1; else 0.
l_int32 sreadHeaderSpix | ( | const l_uint32 * | data, |
l_int32 * | pwidth, | ||
l_int32 * | pheight, | ||
l_int32 * | pbps, | ||
l_int32 * | pspp, | ||
l_int32 * | piscmap | ||
) |
Input: data &width (<return>) &height (<return>) &bps (<return>, bits/sample) &spp (<return>, samples/pixel) &iscmap (<optional return>="">; input NULL to ignore) Return: 0 if OK, 1 on error
Notes: (1) If there is a colormap, iscmap is returned as 1; else 0.