static int JBIGDecode(TIFF* tif, uint8* buffer, tmsize_t size, uint16 s)
{
struct jbg_dec_state decoder;
int decodeStatus = 0;
unsigned char* pImage = NULL;
(void) size, (void) s;
if (isFillOrder(tif, tif->tif_dir.td_fillorder))
{
TIFFReverseBits(tif->tif_rawdata, tif->tif_rawdatasize);
}
jbg_dec_init(&decoder);
#if defined(HAVE_JBG_NEWLEN)
jbg_newlen(tif->tif_rawdata, (size_t)tif->tif_rawdatasize);
/*
* I do not check the return status of jbg_newlen because even if this
* function fails it does not necessarily mean that decoding the image
* will fail. It is generally only needed for received fax images
* that do not contain the actual length of the image in the BIE
* header. I do not log when an error occurs because that will cause
* problems when converting JBIG encoded TIFF's to
* PostScript. As long as the actual image length is contained in the
* BIE header jbg_dec_in should succeed.
*/
#endif /* HAVE_JBG_NEWLEN */
decodeStatus = jbg_dec_in(&decoder, (unsigned char*)tif->tif_rawdata,
(size_t)tif->tif_rawdatasize, NULL);
if (JBG_EOK != decodeStatus)
{
/*
* XXX: JBG_EN constant was defined in pre-2.0 releases of the
* JBIG-KIT. Since the 2.0 the error reporting functions were
* changed. We will handle both cases here.
*/
TIFFErrorExt(tif->tif_clientdata,
"JBIG", "Error (%d) decoding: %s",
decodeStatus,
#if defined(JBG_EN)
jbg_strerror(decodeStatus, JBG_EN)
#else
jbg_strerror(decodeStatus)
#endif
);
return 0;
}
pImage = jbg_dec_getimage(&decoder, 0);
_TIFFmemcpy(buffer, pImage, jbg_dec_getsize(&decoder));
jbg_dec_free(&decoder);
return 1;
}
static int JBIGDecode(TIFF* tif, tidata_t buffer, tsize_t size, tsample_t s)
{
struct jbg_dec_state decoder;
int decodeStatus = 0;
unsigned char* pImage = NULL;
(void) size, (void) s;
if (isFillOrder(tif, tif->tif_dir.td_fillorder))
{
TIFFReverseBits(tif->tif_rawdata, tif->tif_rawdatasize);
}
jbg_dec_init(&decoder);
#if defined(HAVE_JBG_NEWLEN)
jbg_newlen(tif->tif_rawdata, tif->tif_rawdatasize);
/*
* I do not check the return status of jbg_newlen because even if this
* function fails it does not necessarily mean that decoding the image
* will fail. It is generally only needed for received fax images
* that do not contain the actual length of the image in the BIE
* header. I do not log when an error occurs because that will cause
* problems when converting JBIG encoded TIFF's to
* PostScript. As long as the actual image length is contained in the
* BIE header jbg_dec_in should succeed.
*/
#endif /* HAVE_JBG_NEWLEN */
decodeStatus = jbg_dec_in(&decoder, tif->tif_rawdata,
tif->tif_rawdatasize, NULL);
if (JBG_EOK != decodeStatus)
{
TIFFError("JBIG", "Error (%d) decoding: %s",
decodeStatus, jbg_strerror(decodeStatus, JBG_EN));
return 0;
}
pImage = jbg_dec_getimage(&decoder, 0);
_TIFFmemcpy(buffer, pImage, jbg_dec_getsize(&decoder));
jbg_dec_free(&decoder);
return 1;
}
int main(int argc, char** argv)
{
QTextCodec::setCodecForLocale(QTextCodec::codecForName("latin1"));
AppliArgs args(QStringList() << "~help,h" << "~version,v" << "output=1,o");
QTextStream out(stdout), err(stderr);
unsigned long int length;
struct jbg_dec_state sd;
unsigned char *buffer;
QString hw("%1 %2\n");
QByteArray data;
bool argsErr;
QFile input;
// Parse arguments
argsErr = !args.parse(argc, argv, 1);
if (argsErr || args.isOptionSet("help")) {
args.printErrors(err);
out << QString(_("Usage: %1 [options] <JBIG file>")).arg(args.
applicationName()) << endl;
out << _("Available options:") << endl;
out << _(" --help, -h Print this help message") << endl;
out << _(" --output, -o Select the output file") << endl;
out << _(" --version, -v Print the version information") <<
endl;
return argsErr ? 1 : 0;
} else if (args.isOptionSet("version")) {
out << _("(C) jbgtopbm, 2007 by Aurélien Croc") << endl;
out << _("This project is under the GNU General Public Licence "
"version 2") << endl;
out << _("More information => http://splix.ap2c.org") << endl << endl;
return 0;
}
// Open the input and the output file
input.setFileName(args.parameter(0));
if (!input.open(QIODevice::ReadOnly)) {
err << _("Error: cannot open file ") << args.parameter(0) << endl;
return -1;
}
data = input.readAll();
buffer = (unsigned char *)data.data();
length = data.length();
if (args.isOptionSet("output"))
output.setFileName(args.optionArg("output", 0));
else
output.setFileName("/dev/stdout");
if (!output.open(QIODevice::WriteOnly)) {
err << _("Error: cannot open file ") << output.fileName() << endl;
return -1;
}
// Decompress the image
jbg_dec_init(&sd);
while (length) {
unsigned long size;
int res;
size = *(unsigned long*)buffer;
printf("Taille=%lu\n", size);
buffer += sizeof(size);
length -= sizeof(size);
res = jbg_dec_in(&sd, buffer, size, NULL);
if (res == JBG_EOK) {
out << _("Processed.") << endl;
break;
} else if (res != JBG_EAGAIN) {
err << _("JBG not ok ") << res << endl;
break;
}
length -= size;
buffer += size;
}
// Store the image
output.write("P4\n");
output.write("# Image created by jbgtopbm, (C) 2007 by Aurélien Croc "
"(AP²C)\n");
hw = hw.arg(jbg_dec_getwidth(&sd)).arg(jbg_dec_getheight(&sd));
output.write(hw.toAscii());
output.write((const char *)jbg_dec_getimage(&sd, 0), jbg_dec_getsize(&sd));
output.close();
return 0;
}
