static void
putinit(int const cols,
int const rows) {
pm_writebigshort(stdout, YBM_MAGIC);
pm_writebigshort(stdout, cols);
pm_writebigshort(stdout, rows);
item = 0;
bitsperitem = 0;
bitshift = 0;
}
static void
putitem(void) {
pm_writebigshort(stdout, item);
item = 0;
bitsperitem = 0;
bitshift = 0;
}
static void
save_exif(struct jpeg_decompress_struct const cinfo,
const char * const exif_filespec) {
/*----------------------------------------------------------------------------
Write the contents of the first Exif header in the image into the
file with filespec 'exif_filespec'. Start with the two byte length
field. If 'exif_filespec' is "-", write to standard output.
If there is no Exif header in the image, write just zero, as a two
byte pure binary integer.
-----------------------------------------------------------------------------*/
FILE * exif_file;
struct jpeg_marker_struct * markerP;
exif_file = pm_openw(exif_filespec);
for (markerP = cinfo.marker_list;
markerP && !is_exif(*markerP);
markerP = markerP->next);
if (markerP) {
pm_writebigshort(exif_file, markerP->data_length+2);
if (ferror(exif_file))
pm_error("Write of Exif header to %s failed on first byte.",
exif_filespec);
else {
int rc;
rc = fwrite(markerP->data, 1, markerP->data_length, exif_file);
if (rc != markerP->data_length)
pm_error("Write of Exif header to '%s' failed. Wrote "
"length successfully, but then failed after "
"%d characters of data.", exif_filespec, rc);
}
} else {
/* There is no Exif header in the image */
pm_writebigshort(exif_file, 0);
if (ferror(exif_file))
pm_error("Write of Exif header file '%s' failed.", exif_filespec);
}
pm_close(exif_file);
}
static void
putinit (int const rows, int const cols)
{
if (pm_writebigshort (stdout, (short) 1) == -1 /* Image file version */
|| pm_writebigshort (stdout, (short) 8) == -1 /* Header length */
|| pm_writebigshort (stdout, (short) 1) == -1 /* Number of planes */
|| pm_writebigshort (stdout, (short) 1) == -1 /* Pattern length */
|| pm_writebigshort (stdout, (short) 372) == -1 /* Pixel width */
|| pm_writebigshort (stdout, (short) 372) == -1 /* Pixel height */
|| pm_writebigshort (stdout, (short) cols) == -1
|| pm_writebigshort (stdout, (short) rows) == -1)
pm_error ("write error");
item = 0;
bitsperitem = 0;
bitshift = 7;
outcol = 0;
outmax = (cols + 7) / 8;
outrow = (unsigned char *) pm_allocrow (outmax, sizeof (unsigned char));
lastrow = (unsigned char *) pm_allocrow (outmax, sizeof (unsigned char));
linerepeat = -1;
}
