void
exif_content_add_entry (ExifContent * content, ExifEntry * entry)
{
if (entry->parent)
return;
entry->parent = content;
content->entries = realloc (content->entries,
sizeof (ExifEntry) * (content->count + 1));
content->entries[content->count] = entry;
exif_entry_ref (entry);
content->count++;
}
void
exif_content_add_entry (ExifContent *c, ExifEntry *entry)
{
ExifEntry **entries;
if (!c || !c->priv || !entry || entry->parent) return;
if (exif_content_get_entry (c, entry->tag)) {
exif_log (c->priv->log, EXIF_LOG_CODE_DEBUG, "ExifContent",
"An attempt has been made to add "
"the tag '%s' twice to an IFD. This is against "
"specification.", exif_tag_get_name (entry->tag));
return;
}
entries = exif_mem_realloc (c->priv->mem,
c->entries, sizeof (ExifEntry*) * (c->count + 1));
if (!entries) return;
entry->parent = c;
entries[c->count++] = entry;
c->entries = entries;
exif_entry_ref (entry);
}
static void
metadatamux_exif_for_each_tag_in_list (const GstTagList * list,
const gchar * tag, gpointer user_data)
{
ExifData *ed = (ExifData *) user_data;
ExifTag exif_tag;
GType type = G_TYPE_INVALID;
ExifEntry *entry = NULL;
ExifIfd ifd = EXIF_IFD_COUNT;
const ExifByteOrder byte_order = exif_data_get_byte_order (ed);
exif_tag = metadatamux_exif_get_exif_from_tag (tag, &type, &ifd);
if (!exif_tag)
goto done;
entry = exif_data_get_entry (ed, exif_tag);
if (entry)
exif_entry_ref (entry);
else {
entry = exif_entry_new ();
exif_content_add_entry (ed->ifd[ifd], entry);
exif_entry_initialize (entry, exif_tag);
}
if (entry->data == NULL) {
if (entry->tag == EXIF_TAG_GPS_ALTITUDE) {
entry->format = EXIF_FORMAT_RATIONAL;
entry->components = 1;
entry->size = exif_format_get_size (entry->format) * entry->components;
entry->data = g_malloc (entry->size);
} else if (entry->tag == EXIF_TAG_GPS_LATITUDE
|| entry->tag == EXIF_TAG_GPS_LONGITUDE) {
entry->format = EXIF_FORMAT_RATIONAL;
entry->components = 3;
entry->size = exif_format_get_size (entry->format) * entry->components;
entry->data = g_malloc (entry->size);
}
}
if (type == GST_TYPE_FRACTION) {
const GValue *gvalue = gst_tag_list_get_value_index (list, tag, 0);
gint numerator = gst_value_get_fraction_numerator (gvalue);
gint denominator = gst_value_get_fraction_denominator (gvalue);
switch (entry->format) {
case EXIF_FORMAT_SRATIONAL:
{
ExifSRational sr = { numerator, denominator };
exif_set_srational (entry->data, byte_order, sr);
}
break;
case EXIF_FORMAT_RATIONAL:
{
ExifRational r;
if (entry->tag == EXIF_TAG_X_RESOLUTION ||
entry->tag == EXIF_TAG_Y_RESOLUTION) {
ExifEntry *unit_entry = NULL;
unit_entry = exif_data_get_entry (ed, EXIF_TAG_RESOLUTION_UNIT);
if (unit_entry) {
ExifShort vsh = exif_get_short (unit_entry->data, byte_order);
if (vsh != 2) /* inches */
exif_set_short (unit_entry->data, byte_order, 2);
}
}
r.numerator = numerator;
r.denominator = denominator;
if (numerator < 0)
r.numerator = -numerator;
if (denominator < 0)
r.denominator = -denominator;
exif_set_rational (entry->data, byte_order, r);
}
break;
default:
break;
}
} else if (type == GST_TYPE_BUFFER) {
const GValue *val = NULL;
GstBuffer *buf;
val = gst_tag_list_get_value_index (list, tag, 0);
buf = gst_value_get_buffer (val);
entry->components = GST_BUFFER_SIZE (buf);
entry->size = GST_BUFFER_SIZE (buf);
entry->data = g_malloc (entry->size);
memcpy (entry->data, GST_BUFFER_DATA (buf), entry->size);
} else {
switch (type) {
case G_TYPE_STRING:
{
gchar *value = NULL;
if (gst_tag_list_get_string (list, tag, &value)) {
if (entry->tag == EXIF_TAG_DATE_TIME_DIGITIZED
|| entry->tag == EXIF_TAG_DATE_TIME
|| entry->tag == EXIF_TAG_DATE_TIME_ORIGINAL) {
GString *datetime = g_string_new_len (value,
20); /* enough memory to hold "YYYY:MM:DD HH:MM:SS" */
if (metadatamux_exif_convert_from_datetime (datetime)) {
} else {
GST_ERROR ("Unexpected date & time format for %s", tag);
}
g_free (value);
value = datetime->str;
g_string_free (datetime, FALSE);
} else if (value) {
entry->components = strlen (value) + 1;
entry->size =
exif_format_get_size (entry->format) * entry->components;
entry->data = (guint8 *) value;
value = NULL;
}
}
}
break;
case G_TYPE_UINT:
case G_TYPE_INT:
{
gint value;
ExifShort v_short;
if (G_TYPE_UINT == type) {
gst_tag_list_get_uint (list, tag, (guint *) & value);
} else {
gst_tag_list_get_int (list, tag, &value);
}
switch (entry->format) {
case EXIF_FORMAT_SHORT:
if (entry->tag == EXIF_TAG_CONTRAST
|| entry->tag == EXIF_TAG_SATURATION) {
if (value < -33)
value = 1; /* low */
else if (value < 34)
value = 0; /* normal */
else
value = 2; /* high */
}
v_short = value;
exif_set_short (entry->data, byte_order, v_short);
break;
case EXIF_FORMAT_LONG:
exif_set_long (entry->data, byte_order, value);
break;
default:
break;
}
}
break;
case G_TYPE_DOUBLE:
{
gdouble value;
gst_tag_list_get_double (list, tag, &value);
if (entry->tag == EXIF_TAG_GPS_LATITUDE
|| entry->tag == EXIF_TAG_GPS_LONGITUDE) {
ExifRational *rt = (ExifRational *) entry->data;
gdouble v = fabs (value);
ExifEntry *ref_entry = NULL;
char ref;
const ExifTag ref_tag = entry->tag == EXIF_TAG_GPS_LATITUDE ?
EXIF_TAG_GPS_LATITUDE_REF : EXIF_TAG_GPS_LONGITUDE_REF;
/* DDD - degrees */
rt->numerator = (gulong) v;
rt->denominator = 1;
GST_DEBUG ("deg: %lf : %lu / %lu", v, (gulong) rt->numerator,
(gulong) rt->denominator);
v -= rt->numerator;
rt++;
/* MM - minutes */
rt->numerator = (gulong) (v * 60.0);
rt->denominator = 1;
GST_DEBUG ("min: %lf : %lu / %lu", v, (gulong) rt->numerator,
(gulong) rt->denominator);
v -= ((gdouble) rt->numerator / 60.0);
rt++;
/* SS - seconds */
rt->numerator = (gulong) (0.5 + v * 3600.0);
rt->denominator = 1;
GST_DEBUG ("sec: %lf : %lu / %lu", v, (gulong) rt->numerator,
(gulong) rt->denominator);
if (entry->tag == EXIF_TAG_GPS_LONGITUDE) {
GST_DEBUG ("longitude : %lf", value);
ref = (value < 0.0) ? 'W' : 'E';
} else {
GST_DEBUG ("latitude : %lf", value);
ref = (value < 0.0) ? 'S' : 'N';
}
ref_entry = exif_data_get_entry (ed, ref_tag);
if (ref_entry) {
exif_entry_ref (ref_entry);
} else {
ref_entry = exif_entry_new ();
exif_content_add_entry (ed->ifd[EXIF_IFD_GPS], ref_entry);
exif_entry_initialize (ref_entry, ref_tag);
}
if (ref_entry->data == NULL) {
ref_entry->format = EXIF_FORMAT_ASCII;
ref_entry->components = 2;
ref_entry->size = 2;
ref_entry->data = g_malloc (2);
}
ref_entry->data[0] = ref;
ref_entry->data[1] = 0;
exif_entry_unref (ref_entry);
} else if (entry->tag == EXIF_TAG_GPS_ALTITUDE) {
ExifEntry *ref_entry = NULL;
ExifRational *rt = (ExifRational *) entry->data;
rt->numerator = (gulong) fabs (10.0 * value);
rt->denominator = 10;
GST_DEBUG ("altitude : %lf", value);
ref_entry = exif_data_get_entry (ed, EXIF_TAG_GPS_ALTITUDE_REF);
if (ref_entry) {
exif_entry_ref (ref_entry);
} else {
ref_entry = exif_entry_new ();
exif_content_add_entry (ed->ifd[EXIF_IFD_GPS], ref_entry);
exif_entry_initialize (ref_entry, EXIF_TAG_GPS_ALTITUDE_REF);
}
if (ref_entry->data == NULL) {
ref_entry->format = EXIF_FORMAT_BYTE;
ref_entry->components = 1;
ref_entry->size = 1;
ref_entry->data = g_malloc (1);
}
if (value > 0.0) {
ref_entry->data[0] = 0;
} else {
ref_entry->data[0] = 1;
}
exif_entry_unref (ref_entry);
}
}
break;
default:
break;
}
}
done:
if (entry)
exif_entry_unref (entry);
}
