void
epsilon_exif_info_free (Epsilon_Exif_Info * eei)
{
if (eei)
{
exiffree (eei);
}
}
/*
* Scan the JPEG file for Exif data and parse it.
*/
static int
doit(FILE *fp, int n)
{
int mark, gotapp1, first, rc;
unsigned int len, rlen;
unsigned char *exifbuf;
struct exiftags *t;
long app1;
gotapp1 = FALSE;
first = 0;
exifbuf = NULL;
rc = 0;
while (jpegscan(fp, &mark, &len, !(first++))) {
if (mark != JPEG_M_APP1) {
if (fseek(fp, len, SEEK_CUR))
exifdie((const char *)strerror(errno));
continue;
}
exifbuf = (unsigned char *)malloc(len);
if (!exifbuf)
exifdie((const char *)strerror(errno));
app1 = ftell(fp);
rlen = fread(exifbuf, 1, len, fp);
if (rlen != len) {
fprintf(stderr, "%s: error reading JPEG (length "
"mismatch)\n", fname);
free(exifbuf);
return (1);
}
t = exifscan(exifbuf, len, FALSE);
if (t && t->props) {
gotapp1 = TRUE;
if (lflag)
rc = listts(t, &lorder[n]);
else
rc = procall(fp, app1, t, exifbuf);
}
exiffree(t);
free(exifbuf);
}
if (!gotapp1) {
fprintf(stderr, "%s: couldn't find Exif data\n", fname);
return (1);
}
return (rc);
}
static Epsilon_Exif_Info *
epsilon_read_exif_data (FILE * fp, int dumplvl, int pas)
{
int mark, gotapp1, first;
unsigned int len, rlen;
unsigned char *exifbuf;
struct exiftags *t = NULL;
gotapp1 = FALSE;
first = 0;
exifbuf = NULL;
while (jpegscan (fp, &mark, &len, !(first++)))
{
if (mark != JPEG_M_APP1)
{
if (fseek (fp, len, SEEK_CUR))
exifdie ((const char *) strerror (errno));
continue;
}
exifbuf = (unsigned char *) malloc (len);
if (!exifbuf)
exifdie ((const char *) strerror (errno));
rlen = fread (exifbuf, 1, len, fp);
if (rlen != len)
{
exifwarn ("error reading JPEG (length mismatch)");
free (exifbuf);
return (NULL);
}
t = exifparse (exifbuf, len);
if (t && t->props)
{
gotapp1 = TRUE;
#if 0
if (dumplvl & ED_CAM)
_epsilon_exif_info_props_get (t->props, ED_CAM, pas);
if (dumplvl & ED_IMG)
_epsilon_exif_info_props_get (t->props, ED_IMG, pas);
if (dumplvl & ED_VRB)
_epsilon_exif_info_props_get (t->props, ED_VRB, pas);
if (dumplvl & ED_UNK)
_epsilon_exif_info_props_get (t->props, ED_UNK, pas);
#endif
}
free (exifbuf);
}
if (!gotapp1)
{
exifwarn ("couldn't find Exif data");
if (t)
exiffree (t);
return (NULL);
}
return ((Epsilon_Exif_Info *) t);
}
/*
* Scan the JPEG file for Exif data and parse it.
*/
static int
doit(FILE *fp, const char *fname)
{
int mark, gotapp1, first, rc;
unsigned int len, rlen;
unsigned char *exifbuf;
struct exiftags *t;
long app1;
gotapp1 = FALSE;
first = 0;
exifbuf = NULL;
rc = 0;
while (jpegscan(fp, &mark, &len, !(first++))) {
if (mark != JPEG_M_APP1) {
if (fseek(fp, len, SEEK_CUR))
exifdie((const char *)strerror(errno));
continue;
}
exifbuf = (unsigned char *)malloc(len);
if (!exifbuf)
exifdie((const char *)strerror(errno));
app1 = ftell(fp);
rlen = fread(exifbuf, 1, len, fp);
if (rlen != len) {
fprintf(stderr, "%s: error reading JPEG (length "
"mismatch)\n", fname);
free(exifbuf);
return (1);
}
gotapp1 = TRUE;
t = exifscan(exifbuf, len, FALSE);
if (t && t->props) {
if (bflag || com)
rc = writecom(fp, fname, app1,
findprop(t->props, tags,
EXIF_T_USERCOMMENT), exifbuf, t->md.btiff);
else
rc = printcom(fname, findprop(t->props, tags,
EXIF_T_USERCOMMENT), t->md.btiff);
} else {
fprintf(stderr, "%s: couldn't find Exif properties\n",
fname);
rc = 1;
}
exiffree(t);
free(exifbuf);
}
if (!gotapp1) {
fprintf(stderr, "%s: couldn't find Exif data\n", fname);
return (1);
}
return (rc);
}
