mirror of
https://github.com/ultimatepp/ultimatepp.git
synced 2026-05-17 14:16:10 -06:00
728 lines
22 KiB
C
728 lines
22 KiB
C
/*====================================================================*
|
|
- Copyright (C) 2001 Leptonica. All rights reserved.
|
|
- This software is distributed in the hope that it will be
|
|
- useful, but with NO WARRANTY OF ANY KIND.
|
|
- No author or distributor accepts responsibility to anyone for the
|
|
- consequences of using this software, or for whether it serves any
|
|
- particular purpose or works at all, unless he or she says so in
|
|
- writing. Everyone is granted permission to copy, modify and
|
|
- redistribute this source code, for commercial or non-commercial
|
|
- purposes, with the following restrictions: (1) the origin of this
|
|
- source code must not be misrepresented; (2) modified versions must
|
|
- be plainly marked as such; and (3) this notice may not be removed
|
|
- or altered from any source or modified source distribution.
|
|
*====================================================================*/
|
|
|
|
|
|
/*
|
|
* readfile.c: reads image on file into memory
|
|
*
|
|
* Top-level functions for reading images from file
|
|
* PIXA *pixaReadFiles() [unix only]
|
|
* PIXA *pixaReadFilesSA()
|
|
* PIX *pixRead()
|
|
* PIX *pixReadWithHint()
|
|
* PIX *pixReadStream()
|
|
*
|
|
* Format finders
|
|
* l_int32 findFileFormat()
|
|
* l_int32 findFileFormatBuffer()
|
|
* l_int32 fileFormatIsTiff()
|
|
*
|
|
* Read from memory
|
|
* PIX *pixReadMem()
|
|
*
|
|
* Test function for I/O with different formats
|
|
* l_int32 ioFormatTest()
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "allheaders.h"
|
|
|
|
|
|
/* choose type of PIX to be generated */
|
|
enum {
|
|
READ_24_BIT_COLOR = 0, /* read in as 24 (really 32) bit pix */
|
|
CONVERT_TO_PALETTE = 1, /* convert to 8 bit colormapped pix */
|
|
READ_GRAY = 2 /* read gray only */
|
|
};
|
|
|
|
/* Output files for ioFormatTest().
|
|
* Note that the test for jpeg is not yet implemented */
|
|
static const char *FILE_BMP = "/tmp/junkout.bmp";
|
|
static const char *FILE_PNG = "/tmp/junkout.png";
|
|
static const char *FILE_PNM = "/tmp/junkout.pnm";
|
|
static const char *FILE_G3 = "/tmp/junkout_g3.tif";
|
|
static const char *FILE_G4 = "/tmp/junkout_g4.tif";
|
|
static const char *FILE_RLE = "/tmp/junkout_rle.tif";
|
|
static const char *FILE_PB = "/tmp/junkout_packbits.tif";
|
|
static const char *FILE_LZW = "/tmp/junkout_lzw.tif";
|
|
static const char *FILE_ZIP = "/tmp/junkout_zip.tif";
|
|
static const char *FILE_TIFF = "/tmp/junkout.tif";
|
|
static const char *FILE_JPG = "/tmp/junkout.jpg";
|
|
|
|
|
|
/*---------------------------------------------------------------------*
|
|
* Top-level functions for reading images from file *
|
|
*---------------------------------------------------------------------*/
|
|
/*!
|
|
* pixaReadFiles()
|
|
*
|
|
* Input: dirname
|
|
* substr (<optional> substring filter on filenames; can be NULL)
|
|
* Return: pixa, or NULL on error
|
|
*
|
|
* Notes:
|
|
* (1) 'dirname' is the full path for the directory.
|
|
* (2) 'substr' is the part of the file name (excluding
|
|
* the directory) that is to be matched. All matching
|
|
* filenames are read into the Pixa. If substr is NULL,
|
|
* all filenames are read into the Pixa.
|
|
* (3) This is unix only; it does not work on Windows.
|
|
*/
|
|
PIXA *
|
|
pixaReadFiles(const char *dirname,
|
|
const char *substr)
|
|
{
|
|
PIXA *pixa;
|
|
SARRAY *sa;
|
|
|
|
PROCNAME("pixaReadFiles");
|
|
|
|
if (!dirname)
|
|
return (PIXA *)ERROR_PTR("dirname not defined", procName, NULL);
|
|
|
|
if ((sa = getSortedPathnamesInDirectory(dirname, substr, 0, 0)) == NULL)
|
|
return (PIXA *)ERROR_PTR("sa not made", procName, NULL);
|
|
|
|
pixa = pixaReadFilesSA(sa);
|
|
sarrayDestroy(&sa);
|
|
return pixa;
|
|
}
|
|
|
|
|
|
/*!
|
|
* pixaReadFilesSA()
|
|
*
|
|
* Input: sarray (full pathnames for all files)
|
|
* Return: pixa, or null on error
|
|
*/
|
|
PIXA *
|
|
pixaReadFilesSA(SARRAY *sa)
|
|
{
|
|
char *str;
|
|
l_int32 i, n;
|
|
PIX *pix;
|
|
PIXA *pixa;
|
|
|
|
PROCNAME("pixaReadFilesSA");
|
|
|
|
if (!sa)
|
|
return (PIXA *)ERROR_PTR("sa not defined", procName, NULL);
|
|
|
|
n = sarrayGetCount(sa);
|
|
pixa = pixaCreate(n);
|
|
for (i = 0; i < n; i++) {
|
|
str = sarrayGetString(sa, i, L_NOCOPY);
|
|
if ((pix = pixRead(str)) == NULL) {
|
|
L_WARNING_STRING("pix not read from file %s", procName, str);
|
|
continue;
|
|
}
|
|
pixaAddPix(pixa, pix, L_INSERT);
|
|
}
|
|
|
|
return pixa;
|
|
}
|
|
|
|
|
|
/*!
|
|
* pixRead()
|
|
*
|
|
* Input: filename (with full pathname or in local directory)
|
|
* Return: pix if OK; null on error
|
|
*/
|
|
PIX *
|
|
pixRead(const char *filename)
|
|
{
|
|
FILE *fp;
|
|
PIX *pix;
|
|
|
|
PROCNAME("pixRead");
|
|
|
|
if (!filename)
|
|
return (PIX *)ERROR_PTR("filename not defined", procName, NULL);
|
|
|
|
if ((fp = fopenReadStream(filename)) == NULL)
|
|
return (PIX *)ERROR_PTR("image file not found", procName, NULL);
|
|
pix = pixReadStream(fp, 0);
|
|
fclose(fp);
|
|
|
|
if (!pix)
|
|
return (PIX *)ERROR_PTR("image not returned", procName, NULL);
|
|
return pix;
|
|
}
|
|
|
|
/*!
|
|
* pixReadWithHint()
|
|
*
|
|
* Input: filename (with full pathname or in local directory)
|
|
* hint (bitwise OR of L_HINT_* values for jpeg; use 0 for no hint)
|
|
* Return: pix if OK; null on error
|
|
*
|
|
* Notes:
|
|
* (1) The hint is not binding, but may be used to optimize jpeg decoding.
|
|
* Use 0 for no hinting.
|
|
*/
|
|
PIX *
|
|
pixReadWithHint(const char *filename,
|
|
l_int32 hint)
|
|
{
|
|
FILE *fp;
|
|
PIX *pix;
|
|
|
|
PROCNAME("pixReadWithHint");
|
|
|
|
if (!filename)
|
|
return (PIX *)ERROR_PTR("filename not defined", procName, NULL);
|
|
|
|
if ((fp = fopenReadStream(filename)) == NULL)
|
|
return (PIX *)ERROR_PTR("image file not found", procName, NULL);
|
|
pix = pixReadStream(fp, hint);
|
|
fclose(fp);
|
|
|
|
if (!pix)
|
|
return (PIX *)ERROR_PTR("image not returned", procName, NULL);
|
|
return pix;
|
|
}
|
|
|
|
|
|
/*!
|
|
* pixReadStream()
|
|
*
|
|
* Input: fp (file stream)
|
|
* hint (bitwise OR of L_HINT_* values for jpeg; use 0 for no hint)
|
|
* Return: pix if OK; null on error
|
|
*
|
|
* Notes:
|
|
* (1) The hint only applies to jpeg.
|
|
*/
|
|
PIX *
|
|
pixReadStream(FILE *fp,
|
|
l_int32 hint)
|
|
{
|
|
l_int32 format;
|
|
PIX *pix;
|
|
|
|
PROCNAME("pixReadStream");
|
|
|
|
if (!fp)
|
|
return (PIX *)ERROR_PTR("stream not defined", procName, NULL);
|
|
pix = NULL;
|
|
|
|
format = findFileFormat(fp);
|
|
|
|
switch (format)
|
|
{
|
|
case IFF_BMP:
|
|
if ((pix = pixReadStreamBmp(fp)) == NULL )
|
|
return (PIX *)ERROR_PTR( "bmp: no pix returned", procName, NULL);
|
|
break;
|
|
|
|
case IFF_JFIF_JPEG:
|
|
if ((pix = pixReadStreamJpeg(fp, READ_24_BIT_COLOR, 1, NULL, hint))
|
|
== NULL)
|
|
return (PIX *)ERROR_PTR( "jpeg: no pix returned", procName, NULL);
|
|
break;
|
|
|
|
case IFF_PNG:
|
|
if ((pix = pixReadStreamPng(fp)) == NULL)
|
|
return (PIX *)ERROR_PTR("png: no pix returned", procName, NULL);
|
|
break;
|
|
|
|
case IFF_TIFF:
|
|
case IFF_TIFF_PACKBITS:
|
|
case IFF_TIFF_RLE:
|
|
case IFF_TIFF_G3:
|
|
case IFF_TIFF_G4:
|
|
case IFF_TIFF_LZW:
|
|
case IFF_TIFF_ZIP:
|
|
if ((pix = pixReadStreamTiff(fp, 0)) == NULL) /* page 0 by default */
|
|
return (PIX *)ERROR_PTR("tiff: no pix returned", procName, NULL);
|
|
break;
|
|
|
|
case IFF_PNM:
|
|
if ((pix = pixReadStreamPnm(fp)) == NULL)
|
|
return (PIX *)ERROR_PTR("pnm: no pix returned", procName, NULL);
|
|
break;
|
|
|
|
case IFF_GIF:
|
|
if ((pix = pixReadStreamGif(fp)) == NULL)
|
|
return (PIX *)ERROR_PTR("gif: no pix returned", procName, NULL);
|
|
break;
|
|
|
|
case IFF_UNKNOWN:
|
|
return (PIX *)ERROR_PTR( "Unknown format: no pix returned",
|
|
procName, NULL);
|
|
break;
|
|
}
|
|
|
|
if (pix)
|
|
pixSetInputFormat(pix, format);
|
|
return pix;
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------*
|
|
* Format finders *
|
|
*---------------------------------------------------------------------*/
|
|
/*!
|
|
* findFileFormat()
|
|
*
|
|
* Input: fp (file stream)
|
|
* Return: format integer; 0 on error or if format not recognized
|
|
*
|
|
* N.B.: this resets fp to BOF
|
|
*/
|
|
l_int32
|
|
findFileFormat(FILE *fp)
|
|
{
|
|
l_uint8 firstbytes[8];
|
|
l_int32 format, ret;
|
|
|
|
PROCNAME("findFileFormat");
|
|
|
|
if (!fp)
|
|
return ERROR_INT("stream not defined", procName, 0);
|
|
|
|
rewind(fp);
|
|
if (fnbytesInFile(fp) < 8)
|
|
return ERROR_INT("truncated file", procName, 0);
|
|
|
|
ret = fread((char *)&firstbytes, 1, 8, fp);
|
|
if (ret != 8)
|
|
return ERROR_INT("failed to read first 8 bytes of file", procName, 0);
|
|
rewind(fp);
|
|
|
|
format = findFileFormatBuffer(firstbytes);
|
|
if (format == IFF_TIFF) {
|
|
findTiffCompression(fp, &format);
|
|
rewind(fp);
|
|
}
|
|
return format;
|
|
}
|
|
|
|
|
|
/*!
|
|
* findFileFormatBuffer()
|
|
*
|
|
* Input: byte buffer (at least 8 bytes in size; we can't check)
|
|
* Return: format integer; 0 on error or if format not recognized
|
|
*
|
|
* Notes:
|
|
* (1) This determines the file format from the first 8 bytes in
|
|
* the compressed data stream, which are stored in memory.
|
|
* (2) For tiff files, this returns IFF_TIFF. The specific tiff
|
|
* compression is then determined using findTiffCompression().
|
|
*/
|
|
l_int32
|
|
findFileFormatBuffer(const l_uint8 *buf)
|
|
{
|
|
l_uint16 twobytepw;
|
|
|
|
PROCNAME("findFileFormatBuffer");
|
|
|
|
if (!buf)
|
|
return ERROR_INT("byte buffer not defined", procName, 0);
|
|
|
|
/* Check the bmp and tiff 2-byte header ids */
|
|
((char *)(&twobytepw))[0] = buf[0];
|
|
((char *)(&twobytepw))[1] = buf[1];
|
|
|
|
if (convertOnBigEnd16(twobytepw) == BMP_ID)
|
|
return IFF_BMP;
|
|
|
|
if (twobytepw == TIFF_BIGEND_ID || twobytepw == TIFF_LITTLEEND_ID)
|
|
return IFF_TIFF;
|
|
|
|
/* Check for the p*m 2-byte header ids */
|
|
if ((buf[0] == 'P' && buf[1] == '4') || /* newer packed */
|
|
(buf[0] == 'P' && buf[1] == '1')) /* old format */
|
|
return IFF_PNM;
|
|
|
|
if ((buf[0] == 'P' && buf[1] == '5') || /* newer */
|
|
(buf[0] == 'P' && buf[1] == '2')) /* old */
|
|
return IFF_PNM;
|
|
|
|
if ((buf[0] == 'P' && buf[1] == '6') || /* newer */
|
|
(buf[0] == 'P' && buf[1] == '3')) /* old */
|
|
return IFF_PNM;
|
|
|
|
/* Consider the first 11 bytes of the standard JFIF JPEG header:
|
|
* - The first two bytes are the most important: 0xffd8.
|
|
* - The next two bytes are the jfif marker: 0xffe0.
|
|
* Not all jpeg files have this marker.
|
|
* - The next two bytes are the header length.
|
|
* - The next 5 bytes are a null-terminated string.
|
|
* For JFIF, the string is "JFIF", naturally. For others it
|
|
* can be "Exif" or just about anything else.
|
|
* - Because of all this variability, we only check the first
|
|
* two byte marker. All jpeg files are identified as
|
|
* IFF_JFIF_JPEG. */
|
|
if (buf[0] == 0xff && buf[1] == 0xd8)
|
|
return IFF_JFIF_JPEG;
|
|
|
|
/* Check for the 8 byte PNG signature (png_signature in png.c):
|
|
* {137, 80, 78, 71, 13, 10, 26, 10} */
|
|
if (buf[0] == 137 && buf[1] == 80 && buf[2] == 78 && buf[3] == 71 &&
|
|
buf[4] == 13 && buf[5] == 10 && buf[6] == 26 && buf[7] == 10)
|
|
return IFF_PNG;
|
|
|
|
/* Look for "GIF87a" or "GIF89a" */
|
|
if (buf[0] == 'G' && buf[1] == 'I' && buf[2] == 'F' && buf[3] == '8' &&
|
|
(buf[4] == '7' || buf[4] == '9') && buf[5] == 'a') {
|
|
return IFF_GIF;
|
|
}
|
|
|
|
/* Format header not found */
|
|
return IFF_UNKNOWN;
|
|
}
|
|
|
|
|
|
/*!
|
|
* fileFormatIsTiff()
|
|
*
|
|
* Input: fp (file stream)
|
|
* Return: 1 if file is tiff; 0 otherwise or on error
|
|
*/
|
|
l_int32
|
|
fileFormatIsTiff(FILE *fp)
|
|
{
|
|
l_int32 format;
|
|
|
|
PROCNAME("fileFormatIsTiff");
|
|
|
|
if (!fp)
|
|
return ERROR_INT("stream not defined", procName, 0);
|
|
|
|
format = findFileFormat(fp);
|
|
if (format == IFF_TIFF || format == IFF_TIFF_PACKBITS ||
|
|
format == IFF_TIFF_RLE || format == IFF_TIFF_G3 ||
|
|
format == IFF_TIFF_G4 || format == IFF_TIFF_LZW ||
|
|
format == IFF_TIFF_ZIP)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------*
|
|
* Read from memory *
|
|
*---------------------------------------------------------------------*/
|
|
/*!
|
|
* pixReadMem()
|
|
*
|
|
* Input: data (const; encoded)
|
|
* datasize (size of data)
|
|
* Return: pix, or null on error
|
|
*
|
|
* Notes:
|
|
* (1) This is a variation of pixReadStream(), where the data is read
|
|
* from a memory buffer rather than a file.
|
|
* (2) On windows, this will only read tiff formatted files from
|
|
* memory. For other formats, it requires fmemopen(3).
|
|
* Attempts to read those formats will fail at runtime.
|
|
* (3) findFileFormatBuffer() requires up to 8 bytes to decide on
|
|
* the format. That determines the constraint here.
|
|
*/
|
|
PIX *
|
|
pixReadMem(const l_uint8 *data,
|
|
size_t size)
|
|
{
|
|
l_int32 format;
|
|
PIX *pix;
|
|
|
|
PROCNAME("pixReadMem");
|
|
|
|
if (!data)
|
|
return (PIX *)ERROR_PTR("data not defined", procName, NULL);
|
|
if (size < 8)
|
|
return (PIX *)ERROR_PTR("size < 8", procName, NULL);
|
|
pix = NULL;
|
|
|
|
format = findFileFormatBuffer(data);
|
|
|
|
switch (format)
|
|
{
|
|
case IFF_BMP:
|
|
if ((pix = pixReadMemBmp(data, size)) == NULL )
|
|
return (PIX *)ERROR_PTR( "bmp: no pix returned", procName, NULL);
|
|
break;
|
|
|
|
case IFF_JFIF_JPEG:
|
|
if ((pix = pixReadMemJpeg(data, size, READ_24_BIT_COLOR, 1, NULL, 0))
|
|
== NULL)
|
|
return (PIX *)ERROR_PTR( "jpeg: no pix returned", procName, NULL);
|
|
break;
|
|
|
|
case IFF_PNG:
|
|
if ((pix = pixReadMemPng(data, size)) == NULL)
|
|
return (PIX *)ERROR_PTR("png: no pix returned", procName, NULL);
|
|
break;
|
|
|
|
case IFF_TIFF:
|
|
case IFF_TIFF_PACKBITS:
|
|
case IFF_TIFF_RLE:
|
|
case IFF_TIFF_G3:
|
|
case IFF_TIFF_G4:
|
|
case IFF_TIFF_LZW:
|
|
case IFF_TIFF_ZIP:
|
|
/* Reading page 0 by default */
|
|
if ((pix = pixReadMemTiff(data, size, 0)) == NULL)
|
|
return (PIX *)ERROR_PTR("tiff: no pix returned", procName, NULL);
|
|
break;
|
|
|
|
case IFF_PNM:
|
|
if ((pix = pixReadMemPnm(data, size)) == NULL)
|
|
return (PIX *)ERROR_PTR("pnm: no pix returned", procName, NULL);
|
|
break;
|
|
|
|
case IFF_GIF:
|
|
if ((pix = pixReadMemGif(data, size)) == NULL)
|
|
return (PIX *)ERROR_PTR("gif: no pix returned", procName, NULL);
|
|
break;
|
|
|
|
case IFF_UNKNOWN:
|
|
return (PIX *)ERROR_PTR("Unknown format: no pix returned",
|
|
procName, NULL);
|
|
break;
|
|
}
|
|
|
|
/* Set the input format. For tiff reading from memory we lose
|
|
* the actual input format; for 1 bpp, default to G4. */
|
|
if (pix) {
|
|
if (format == IFF_TIFF && pixGetDepth(pix) == 1)
|
|
format = IFF_TIFF_G4;
|
|
pixSetInputFormat(pix, format);
|
|
}
|
|
|
|
return pix;
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------*
|
|
* Test function for I/O with different formats *
|
|
*---------------------------------------------------------------------*/
|
|
/*!
|
|
* ioFormatTest()
|
|
*
|
|
* Input: filename (input file)
|
|
* Return: 0 if OK; 1 on error or if the test fails
|
|
*
|
|
* Notes:
|
|
* (1) This writes and reads a set of output files losslessly
|
|
* in different formats to /tmp, and tests that the
|
|
* result before and after is unchanged.
|
|
* (2) This should work properly on input images of any depth,
|
|
* with and without colormaps.
|
|
* (3) All supported formats are tested for bmp, png, tiff and
|
|
* non-ascii pnm. Ascii pnm also works (but who'd ever want
|
|
* to use it?) We allow 2 bpp bmp, although it's not
|
|
* supported elsewhere. And we don't support reading
|
|
* 16 bpp png, although this can be turned on in pngio.c.
|
|
*/
|
|
l_int32
|
|
ioFormatTest(const char *filename)
|
|
{
|
|
l_int32 d, equal, problems;
|
|
PIX *pixs, *pixc, *pixt, *pixt2;
|
|
PIXCMAP *cmap;
|
|
|
|
PROCNAME("ioFormatTest");
|
|
|
|
if (!filename)
|
|
return ERROR_INT("filename not defined", procName, 1);
|
|
|
|
if ((pixs = pixRead(filename)) == NULL)
|
|
return ERROR_INT("pixs not made", procName, 1);
|
|
|
|
/* Note that the reader automatically removes colormaps
|
|
* from 1 bpp BMP images, but not from 8 bpp BMP images.
|
|
* Therefore, if our 8 bpp image initially doesn't have a
|
|
* colormap, we are going to need to remove it from any
|
|
* pix read from a BMP file. */
|
|
pixc = pixClone(pixs); /* laziness */
|
|
cmap = pixGetColormap(pixc); /* colormap; can be NULL */
|
|
d = pixGetDepth(pixc);
|
|
|
|
problems = FALSE;
|
|
|
|
/* ----------------------- BMP -------------------------- */
|
|
|
|
/* BMP works for 1, 2, 4, 8 and 32 bpp images.
|
|
* It always writes colormaps for 1 and 8 bpp, so we must
|
|
* remove it after readback if the input image doesn't have
|
|
* a colormap. Although we can write/read 2 bpp BMP, nobody
|
|
* else can read them! */
|
|
if (d == 1 || d == 8) {
|
|
L_INFO("write/read bmp", procName);
|
|
pixWrite(FILE_BMP, pixc, IFF_BMP);
|
|
pixt = pixRead(FILE_BMP);
|
|
if (!cmap)
|
|
pixt2 = pixRemoveColormap(pixt, REMOVE_CMAP_BASED_ON_SRC);
|
|
else
|
|
pixt2 = pixClone(pixt);
|
|
pixEqual(pixc, pixt2, &equal);
|
|
if (!equal) {
|
|
L_INFO(" **** bad bmp image ****", procName);
|
|
problems = TRUE;
|
|
}
|
|
pixDestroy(&pixt);
|
|
pixDestroy(&pixt2);
|
|
}
|
|
|
|
if (d == 2 || d == 4 || d == 32) {
|
|
L_INFO("write/read bmp", procName);
|
|
pixWrite(FILE_BMP, pixc, IFF_BMP);
|
|
pixt = pixRead(FILE_BMP);
|
|
pixEqual(pixc, pixt, &equal);
|
|
if (!equal) {
|
|
L_INFO(" **** bad bmp image ****", procName);
|
|
problems = TRUE;
|
|
}
|
|
pixDestroy(&pixt);
|
|
}
|
|
|
|
/* ----------------------- PNG -------------------------- */
|
|
|
|
/* PNG works for all depths, but here, because we strip
|
|
* 16 --> 8 bpp on reading, we don't test png for 16 bpp. */
|
|
if (d != 16) {
|
|
L_INFO("write/read png", procName);
|
|
pixWrite(FILE_PNG, pixc, IFF_PNG);
|
|
pixt = pixRead(FILE_PNG);
|
|
pixEqual(pixc, pixt, &equal);
|
|
if (!equal) {
|
|
L_INFO(" **** bad png image ****", procName);
|
|
problems = TRUE;
|
|
}
|
|
pixDestroy(&pixt);
|
|
}
|
|
|
|
/* ----------------------- TIFF -------------------------- */
|
|
|
|
/* TIFF works for 1, 2, 4, 8, 16 and 32 bpp images.
|
|
* Because 8 bpp tiff always writes 256 entry colormaps, the
|
|
* colormap sizes may be different for 8 bpp images with
|
|
* colormap; we are testing if the image content is the same.
|
|
* Likewise, the 2 and 4 bpp tiff images with colormaps
|
|
* have colormap sizes 4 and 16, rsp. This test should
|
|
* work properly on the content, regardless of the number
|
|
* of color entries in pixc. */
|
|
|
|
/* tiff uncompressed works for all pixel depths */
|
|
L_INFO("write/read uncompressed tiff", procName);
|
|
pixWrite(FILE_TIFF, pixc, IFF_TIFF);
|
|
pixt = pixRead(FILE_TIFF);
|
|
pixEqual(pixc, pixt, &equal);
|
|
if (!equal) {
|
|
L_INFO(" **** bad tiff uncompressed image ****", procName);
|
|
problems = TRUE;
|
|
}
|
|
pixDestroy(&pixt);
|
|
|
|
/* tiff lzw works for all pixel depths */
|
|
L_INFO("write/read lzw compressed tiff", procName);
|
|
pixWrite(FILE_LZW, pixc, IFF_TIFF_LZW);
|
|
pixt = pixRead(FILE_LZW);
|
|
pixEqual(pixc, pixt, &equal);
|
|
if (!equal) {
|
|
L_INFO(" **** bad tiff lzw compressed image ****", procName);
|
|
problems = TRUE;
|
|
}
|
|
pixDestroy(&pixt);
|
|
|
|
/* tiff adobe deflate (zip) works for all pixel depths */
|
|
L_INFO("write/read zip compressed tiff", procName);
|
|
pixWrite(FILE_ZIP, pixc, IFF_TIFF_ZIP);
|
|
pixt = pixRead(FILE_ZIP);
|
|
pixEqual(pixc, pixt, &equal);
|
|
if (!equal) {
|
|
L_INFO(" **** bad tiff zip compressed image ****", procName);
|
|
problems = TRUE;
|
|
}
|
|
pixDestroy(&pixt);
|
|
|
|
/* tiff g4, g3, rle and packbits work for 1 bpp */
|
|
if (d == 1) {
|
|
L_INFO("write/read g4 compressed tiff", procName);
|
|
pixWrite(FILE_G4, pixc, IFF_TIFF_G4);
|
|
pixt = pixRead(FILE_G4);
|
|
pixEqual(pixc, pixt, &equal);
|
|
if (!equal) {
|
|
L_INFO(" **** bad tiff g4 image ****", procName);
|
|
problems = TRUE;
|
|
}
|
|
pixDestroy(&pixt);
|
|
|
|
L_INFO("write/read g3 compressed tiff", procName);
|
|
pixWrite(FILE_G3, pixc, IFF_TIFF_G3);
|
|
pixt = pixRead(FILE_G3);
|
|
pixEqual(pixc, pixt, &equal);
|
|
if (!equal) {
|
|
L_INFO(" **** bad tiff g3 image ****", procName);
|
|
problems = TRUE;
|
|
}
|
|
pixDestroy(&pixt);
|
|
|
|
L_INFO("write/read rle compressed tiff", procName);
|
|
pixWrite(FILE_RLE, pixc, IFF_TIFF_RLE);
|
|
pixt = pixRead(FILE_RLE);
|
|
pixEqual(pixc, pixt, &equal);
|
|
if (!equal) {
|
|
L_INFO(" **** bad tiff rle image ****", procName);
|
|
problems = TRUE;
|
|
}
|
|
pixDestroy(&pixt);
|
|
|
|
L_INFO("write/read packbits compressed tiff", procName);
|
|
pixWrite(FILE_PB, pixc, IFF_TIFF_PACKBITS);
|
|
pixt = pixRead(FILE_PB);
|
|
pixEqual(pixc, pixt, &equal);
|
|
if (!equal) {
|
|
L_INFO(" **** bad tiff packbits image ****", procName);
|
|
problems = TRUE;
|
|
}
|
|
pixDestroy(&pixt);
|
|
}
|
|
|
|
/* ----------------------- PNM -------------------------- */
|
|
|
|
/* pnm works for 1, 2, 4, 8, 16 and 32 bpp.
|
|
* pnm doesn't have colormaps, so when we write colormapped
|
|
* pix out as pnm, the colormap is removed. Thus for the test,
|
|
* we must remove the colormap from pixc before testing. */
|
|
L_INFO("write/read pnm", procName);
|
|
pixWrite(FILE_PNM, pixc, IFF_PNM);
|
|
pixt = pixRead(FILE_PNM);
|
|
if (cmap)
|
|
pixt2 = pixRemoveColormap(pixc, REMOVE_CMAP_BASED_ON_SRC);
|
|
else
|
|
pixt2 = pixClone(pixc);
|
|
pixEqual(pixt, pixt2, &equal);
|
|
if (!equal) {
|
|
L_INFO(" **** bad pnm image ****", procName);
|
|
problems = TRUE;
|
|
}
|
|
pixDestroy(&pixt);
|
|
pixDestroy(&pixt2);
|
|
|
|
if (problems == FALSE)
|
|
L_INFO("All formats read and written OK!", procName);
|
|
|
|
pixDestroy(&pixc);
|
|
pixDestroy(&pixs);
|
|
return problems;
|
|
}
|
|
|