static gboolean
get_coordinates (EogImage *image,
gdouble *latitude,
gdouble *longitude)
{
ExifData *exif_data;
gchar buffer[32];
gdouble lon, lat;
exif_data = (ExifData *) eog_image_get_exif_info (image);
if (exif_data) {
ExifEntry *entry;
ExifByteOrder byte_order;
byte_order = exif_data_get_byte_order (exif_data);
entry = exif_data_get_entry (exif_data,
EXIF_TAG_GPS_LONGITUDE);
if (!parse_exif_gps_coordinate (entry, &lon, byte_order)
|| (lon > 180.0)) {
exif_data_unref (exif_data);
return FALSE;
}
eog_exif_data_get_value (exif_data,
EXIF_TAG_GPS_LONGITUDE_REF,
buffer,
32);
if (strcmp (buffer, "W") == 0)
lon *= -1;
entry = exif_data_get_entry (exif_data,
EXIF_TAG_GPS_LATITUDE);
if (!parse_exif_gps_coordinate (entry, &lat, byte_order)
|| (lat > 90.0)) {
exif_data_unref (exif_data);
return FALSE;
}
eog_exif_data_get_value (exif_data,
EXIF_TAG_GPS_LATITUDE_REF,
buffer,
32);
if (strcmp (buffer, "S") == 0)
lat *= -1;
*longitude = lon;
*latitude = lat;
exif_data_unref (exif_data);
return TRUE;
}
return FALSE;
}
static ExifDataTypeMakerNote
exif_data_get_type_maker_note (ExifData *d)
{
ExifEntry *e, *em;
char value[1024];
if (!d)
return EXIF_DATA_TYPE_MAKER_NOTE_NONE;
e = exif_data_get_entry (d, EXIF_TAG_MAKER_NOTE);
if (!e)
return EXIF_DATA_TYPE_MAKER_NOTE_NONE;
/* Olympus & Nikon & Sanyo */
if ((e->size >= 8) && ( !memcmp (e->data, "OLYMP", 6) ||
!memcmp (e->data, "OLYMPUS", 8) ||
!memcmp (e->data, "SANYO", 6) ||
!memcmp (e->data, "Nikon", 6)))
return EXIF_DATA_TYPE_MAKER_NOTE_OLYMPUS;
em = exif_data_get_entry (d, EXIF_TAG_MAKE);
if (!em)
return EXIF_DATA_TYPE_MAKER_NOTE_NONE;
/* Canon */
if (!strcmp (exif_entry_get_value (em, value, sizeof (value)), "Canon"))
return EXIF_DATA_TYPE_MAKER_NOTE_CANON;
/* Pentax & some variant of Nikon */
if ((e->size >= 2) && (e->data[0] == 0x00) && (e->data[1] == 0x1b)) {
if (!strncasecmp (
exif_entry_get_value (em, value, sizeof(value)),
"Nikon", 5))
return EXIF_DATA_TYPE_MAKER_NOTE_NIKON;
else
return EXIF_DATA_TYPE_MAKER_NOTE_PENTAX;
}
if ((e->size >= 8) && !memcmp (e->data, "AOC", 4)) {
return EXIF_DATA_TYPE_MAKER_NOTE_PENTAX;
}
if ((e->size >= 8) && !memcmp (e->data, "QVC", 4)) {
return EXIF_DATA_TYPE_MAKER_NOTE_CASIO;
}
if ((e->size >= 12) && !memcmp (e->data, "FUJIFILM", 8)) {
return EXIF_DATA_TYPE_MAKER_NOTE_FUJI;
}
return EXIF_DATA_TYPE_MAKER_NOTE_NONE;
}
qint64 ImageSlideInfo::readExifIntValue(ExifData* pExifData, ExifTag exifTag)
{
qint64 exifValue = 0;
if (!pExifData)
return exifValue;
ExifByteOrder exifByteOrder = exif_data_get_byte_order(pExifData);
ExifEntry* pExifEntry = exif_data_get_entry(pExifData, exifTag);
if (pExifEntry) {
// paranoic a bit
if (pExifEntry->size <= sizeof(qint64)) {
if (pExifEntry->format == EXIF_FORMAT_SBYTE)
exifValue = static_cast<qint64>(*pExifEntry->data);
if (pExifEntry->format == EXIF_FORMAT_SSHORT)
exifValue = static_cast<qint64>(exif_get_sshort(pExifEntry->data, exifByteOrder));
if (pExifEntry->format == EXIF_FORMAT_SLONG)
exifValue = static_cast<qint64>(exif_get_slong(pExifEntry->data, exifByteOrder));
}
}
return exifValue;
}
void JP4::readMakerNote() {
if (_raw_app1)
_ed = exif_data_new_from_data(_raw_app1, _raw_app1_length);
if (!_ed)
return;
ExifEntry* makerNoteEntry = exif_data_get_entry(_ed, EXIF_TAG_MAKER_NOTE);
if (!makerNoteEntry) {
_makerNote.gain[0] = _makerNote.gain[1] = _makerNote.gain[2] = _makerNote.gain[3] = 2.0;
_makerNote.gamma[0] = _makerNote.gamma[1] = _makerNote.gamma[2] = _makerNote.gamma[3] = 0.57;
_makerNote.gamma_scale[0] = _makerNote.gamma_scale[1] = _makerNote.gamma_scale[2] = _makerNote.gamma_scale[3] = 0xffff;
_makerNote.black[0] = _makerNote.black[1] = _makerNote.black[2] = _makerNote.black[3] = 10/256.0;
_makerNote.decim_hor = 1;
_makerNote.decim_ver = 1;
_makerNote.bin_hor = 1;
_makerNote.bin_ver = 1;
return;
}
int makerNoteLength = makerNoteEntry->size/4;
long makerNote[makerNoteLength];
for (int i = 0; i < makerNoteLength; i++) {
makerNote[i] = get_long(makerNoteEntry->data + i*4);
}
for (int i = 0; i < 4; i++) {
// channel gain 8.16 (0x10000 - 1.0). Combines both analog gain and digital scaling
_makerNote.gain[i] = makerNote[i] / 65536.0;
// (P_PIXEL_LOW<<24) | (P_GAMMA <<16) and 16-bit (6.10) scale for gamma tables,
_makerNote.gamma_scale[i] = (makerNote[i+4] & 0xffff);
_makerNote.gamma[i] = ((makerNote[i+4]>>16) & 0xff) / 100.0;
_makerNote.black[i] = (makerNote[i+4]>>24) / 256.0;
}
if (makerNoteLength >= 12) {
_makerNote.woi_left = (makerNote[8] & 0xffff);
_makerNote.woi_width = (makerNote[8]>>16) & 0xffff;
_makerNote.woi_top = (makerNote[9] & 0xffff);
_makerNote.woi_height = (makerNote[9]>>16);
_makerNote.flip_hor = (makerNote[10] & 0x1);
_makerNote.flip_ver = (makerNote[10]>>1) & 0x1;
_makerNote.bayer_mode = (makerNote[10]>>2) & 0x3;
_makerNote.color_mode = (makerNote[10]>>4) & 0x0f;
_makerNote.decim_hor = (makerNote[10]>> 8) & 0x0f;
_makerNote.decim_ver = (makerNote[10]>>12) & 0x0f;
_makerNote.bin_hor = (makerNote[10]>>16) & 0x0f;
_makerNote.bin_ver = (makerNote[10]>>20) & 0x0f;
}
QPixmap ExifPixmap::createPixmap(QString path)
{
ExifData *exifData = exif_data_new_from_file(path.toStdString().c_str());
int orientation = 0;
if(exifData) {
ExifByteOrder byteOrder = exif_data_get_byte_order(exifData);
ExifEntry *exifEntry = exif_data_get_entry(exifData, EXIF_TAG_ORIENTATION);
if(exifEntry) {
orientation = exif_get_short(exifEntry->data, byteOrder);
}
exif_data_free(exifData);
}
QPixmap pic(path);
/*
0th Row 0th Column
1 top left side
2 top right side
3 bottom right side
4 bottom left side
5 left side top
6 right side top
7 right side bottom
8 left side bottom
*/
QTransform t;
switch(orientation) { // TODO : test flips
case 1:
break;
case 2:
t.scale(-1,1);
break;
case 3:
t.rotate(180);
break;
case 4:
t.rotate(180);
t.scale(-1,1);
break;
case 5:
t.rotate(90);
t.scale(-1,1);
break;
case 6:
t.rotate(90);
break;
case 7:
t.rotate(-90);
t.scale(-1,1);
break;
case 8:
t.rotate(-90);
break;
default:
break;
}
return pic.transformed(t);
}
int
exif_mnote_data_canon_identify (const ExifData *ed, const ExifEntry *e)
{
char value[8];
ExifEntry *em = exif_data_get_entry (ed, EXIF_TAG_MAKE);
if (!em)
return 0;
return !strcmp (exif_entry_get_value (em, value, sizeof (value)), "Canon");
}
std::string Exif::value(std::string tag_name) const {
ExifEntry *entry;
ExifTag tag;
std::string value;
char raw_value[1024];
tag = exif_tag_from_name(tag_name.c_str());
entry = exif_data_get_entry(m_data, tag);
value = exif_entry_get_value(entry, raw_value, sizeof(raw_value));
return value;
}
/**
* eog_exif_data_get_value:
* @exif_data: pointer to an <structname>ExifData</structname> struct
* @tag_id: the requested tag's id. See <filename>exif-tag.h</filename>
* from the libexif package for possible values (e.g. %EXIF_TAG_EXPOSURE_MODE).
* @buffer: a pre-allocated output buffer
* @buf_size: size of @buffer
*
* Convenience function to extract a string representation of an Exif tag
* directly from an <structname>ExifData</structname> struct. The string is
* written into @buffer as far as @buf_size permits.
*
* Returns: a pointer to @buffer.
*/
const gchar *
eog_exif_data_get_value (EogExifData *exif_data, gint tag_id, gchar *buffer, guint buf_size)
{
ExifEntry *exif_entry;
const gchar *exif_value;
exif_entry = exif_data_get_entry (exif_data, tag_id);
buffer[0] = 0;
exif_value = exif_entry_get_value (exif_entry, buffer, buf_size);
return exif_value;
}
/*! If MakerNote is recognized, load it.
*
* \param[in,out] data #ExifData
* \param[in] d pointer to raw EXIF data
* \param[in] ds length of data at d
*/
static void
interpret_maker_note(ExifData *data, const unsigned char *d, unsigned int ds)
{
int mnoteid;
ExifEntry* e = exif_data_get_entry (data, EXIF_TAG_MAKER_NOTE);
if (!e)
return;
if ((mnoteid = exif_mnote_data_olympus_identify (data, e)) != 0) {
exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG,
"ExifData", "Olympus MakerNote variant type %d", mnoteid);
data->priv->md = exif_mnote_data_olympus_new (data->priv->mem);
} else if ((mnoteid = exif_mnote_data_canon_identify (data, e)) != 0) {
exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG,
"ExifData", "Canon MakerNote variant type %d", mnoteid);
data->priv->md = exif_mnote_data_canon_new (data->priv->mem, data->priv->options);
} else if ((mnoteid = exif_mnote_data_fuji_identify (data, e)) != 0) {
exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG,
"ExifData", "Fuji MakerNote variant type %d", mnoteid);
data->priv->md = exif_mnote_data_fuji_new (data->priv->mem);
/* NOTE: Must do Pentax detection last because some of the
* heuristics are pretty general. */
} else if ((mnoteid = exif_mnote_data_pentax_identify (data, e)) != 0) {
exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG,
"ExifData", "Pentax MakerNote variant type %d", mnoteid);
data->priv->md = exif_mnote_data_pentax_new (data->priv->mem);
}
/*
* If we are able to interpret the maker note, do so.
*/
if (data->priv->md) {
exif_mnote_data_log (data->priv->md, data->priv->log);
exif_mnote_data_set_byte_order (data->priv->md,
data->priv->order);
exif_mnote_data_set_offset (data->priv->md,
data->priv->offset_mnote);
exif_mnote_data_load (data->priv->md, d, ds);
}
}
static int getDouble(ExifData *ed, ExifByteOrder bo, ExifTag t, double *d) {
ExifEntry * e = exif_data_get_entry(ed, t);
if (!e)
return 0;
char *b = e->data;
switch (e->format) {
case EXIF_FORMAT_SHORT:
*d = (double) exif_get_short(b, bo);
return 1;
case EXIF_FORMAT_SSHORT:
*d = (double) exif_get_sshort(b, bo);
return 1;
case EXIF_FORMAT_LONG:
*d = (double) exif_get_long(b, bo);
return 1;
case EXIF_FORMAT_SLONG:
*d = (double) exif_get_slong(b, bo);
return 1;
case EXIF_FORMAT_RATIONAL:
{
ExifRational r = exif_get_rational(b, bo);
*d = (double) r.numerator / (double) r.denominator;
return 1;
}
case EXIF_FORMAT_SRATIONAL:
{
ExifSRational r = exif_get_srational(b, bo);
*d = (double) r.numerator / (double) r.denominator;
return 1;
}
default:
return 0;
}
}
ExifEntry *
rstto_file_get_exif ( RsttoFile *r_file, ExifTag id )
{
/* If there is no exif-data object, try to create it */
if ( NULL == r_file->priv->exif_data )
{
r_file->priv->exif_data = exif_data_new_from_file (
rstto_file_get_path (r_file) );
}
if ( NULL != r_file->priv->exif_data )
{
return exif_data_get_entry (
r_file->priv->exif_data,
id );
}
/* If there is no exif-data, return NULL */
return NULL;
}
QString ImageSlideInfo::readExifStringValue(ExifData* pExifData, ExifTag exifTag)
{
QString exifValueStr;
if (!pExifData)
return exifValueStr;
ExifEntry* pExifEntry = exif_data_get_entry(pExifData, exifTag);
if (pExifEntry) {
if (pExifEntry->format == EXIF_FORMAT_ASCII) {
char* pBuffer = new char[pExifEntry->size];
memset(pBuffer, '\0', pExifEntry->size);
exif_entry_get_value(pExifEntry, pBuffer, pExifEntry->size);
if (strlen(pBuffer) > 0)
exifValueStr = pBuffer;
delete[] pBuffer;
}
}
return exifValueStr;
}
int
exif_mnote_data_olympus_identify (const ExifData *ed, const ExifEntry *e)
{
int variant = exif_mnote_data_olympus_identify_variant(e->data, e->size);
if (variant == nikonV0) {
/* This variant needs some extra checking with the Make */
char value[5];
ExifEntry *em = exif_data_get_entry (ed, EXIF_TAG_MAKE);
variant = unrecognized;
if (em) {
const char *v = exif_entry_get_value (em, value, sizeof(value));
if (v && (!strncmp (v, "Nikon", sizeof(value)) ||
!strncmp (v, "NIKON", sizeof(value)) ))
/* When saved, this variant will be written out like the
* alternative nikonV2 form above instead
*/
variant = nikonV0;
}
}
return variant;
}
bool
getCalibrationFromEXIF(char const * fileName, int& width, int& height, double& focalLengthX, double& focalLengthY,
double const defaultWidth, double const defaultHeight)
{
width = defaultWidth;
height = defaultHeight;
focalLengthX = focalLengthY = -1;
double fNative = -1, f35mm = -1;
double fResX = -1, fResY = -1, fResUnits = -1;
ExifData * ed = exif_data_new_from_file(fileName);
if (!ed) return false;
ExifByteOrder const byteOrder = exif_data_get_byte_order(ed);
ExifEntry * entry;
entry = exif_data_get_entry(ed, EXIF_TAG_PIXEL_X_DIMENSION);
if (entry) width = getEXIF_DoubleVal(entry, byteOrder);
entry = exif_data_get_entry(ed, EXIF_TAG_PIXEL_Y_DIMENSION);
if (entry) height = getEXIF_DoubleVal(entry, byteOrder);
entry = exif_data_get_entry(ed, EXIF_TAG_FOCAL_LENGTH);
if (entry) fNative = getEXIF_DoubleVal(entry, byteOrder);
entry = exif_data_get_entry(ed, EXIF_TAG_FOCAL_PLANE_X_RESOLUTION);
if (entry) fResX = getEXIF_DoubleVal(entry, byteOrder);
entry = exif_data_get_entry(ed, EXIF_TAG_FOCAL_PLANE_Y_RESOLUTION);
if (entry) fResY = getEXIF_DoubleVal(entry, byteOrder);
entry = exif_data_get_entry(ed, EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT);
if (entry) fResUnits = getEXIF_DoubleVal(entry, byteOrder);
if (fResUnits == 1 || fResUnits == 2)
fResUnits = 25.4;
else if (fResUnits == 3)
fResUnits = 10.0;
else if (fResUnits == 4)
fResUnits = 1.0;
else if (fResUnits == 5)
fResUnits = 0.001;
else
fResUnits = 25.4;
if (fNative > 0 && fResX > 0 && fResY > 0 && fResUnits > 0)
{
focalLengthX = fNative * fResX / fResUnits;
focalLengthY = fNative * fResY / fResUnits;
}
else
{
entry = exif_data_get_entry(ed, EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM);
if (entry) f35mm = getEXIF_DoubleVal(entry, byteOrder);
if (f35mm > 0) focalLengthX = focalLengthY = f35mm*width / 35.0;
} // end if
return focalLengthX > 0;
} // getCalibrationFromEXIF()
void
eog_exif_util_set_focal_length_label_text (GtkLabel *label,
EogExifData *exif_data)
{
ExifEntry *entry = NULL, *entry35mm = NULL;
ExifByteOrder byte_order;
gfloat f_val = 0.0;
gchar *fl_text = NULL,*fl35_text = NULL;
/* If no ExifData is supplied the label will be
* cleared later as fl35_text is NULL. */
if (exif_data != NULL) {
entry = exif_data_get_entry (exif_data, EXIF_TAG_FOCAL_LENGTH);
entry35mm = exif_data_get_entry (exif_data,
EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM);
byte_order = exif_data_get_byte_order (exif_data);
}
if (entry && G_LIKELY (entry->format == EXIF_FORMAT_RATIONAL)) {
ExifRational value;
/* Decode value by hand as libexif is not necessarily returning
* it in the format we want it to be.
*/
value = exif_get_rational (entry->data, byte_order);
/* Guard against div by zero */
if (G_LIKELY(value.denominator != 0))
f_val = (gfloat)value.numerator/
(gfloat)value.denominator;
/* TRANSLATORS: This is the actual focal length used when
the image was taken.*/
fl_text = g_strdup_printf (_("%.1f (lens)"), f_val);
}
if (entry35mm && G_LIKELY (entry35mm->format == EXIF_FORMAT_SHORT)) {
ExifShort s_val;
s_val = exif_get_short (entry35mm->data, byte_order);
/* Print as float to get a similar look as above. */
/* TRANSLATORS: This is the equivalent focal length assuming
a 35mm film camera. */
fl35_text = g_strdup_printf(_("%.1f (35mm film)"),(float)s_val);
}
if (fl_text) {
if (fl35_text) {
gchar *merged_txt;
merged_txt = g_strconcat (fl35_text,", ", fl_text, NULL);
gtk_label_set_text (label, merged_txt);
g_free (merged_txt);
} else {
gtk_label_set_text (label, fl_text);
}
} else {
/* This will also clear the label if no ExifData was supplied */
gtk_label_set_text (label, fl35_text);
}
g_free (fl35_text);
g_free (fl_text);
}
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);
}
static time_t
duf_exif_get_time( ExifData * edata, int *pdate_changed, char *stime_original, size_t stime_original_size, int *pr )
{
int lr = 0;
time_t timeepoch = 0;
ExifEntry *entry = NULL;
int changed = 0;
#if 0
if ( ( entry = exif_content_get_entry( edata->ifd[EXIF_IFD_EXIF], EXIF_TAG_DATE_TIME_ORIGINAL ) )
/* || ( entry = exif_content_get_entry( edata->ifd[EXIF_IFD_EXIF], EXIF_TAG_DATE_TIME_DIGITIZED ) ) */
|| ( entry = exif_content_get_entry( edata->ifd[EXIF_IFD_0], EXIF_TAG_DATE_TIME ) ) )
#else
if ( ( entry = exif_data_get_entry( edata, EXIF_TAG_DATE_TIME_ORIGINAL ) ) || ( entry = exif_data_get_entry( edata, EXIF_TAG_DATE_TIME ) ) )
#endif
{
memset( stime_original, stime_original_size, 0 );
/* Get the contents of the tag in human-readable form */
if ( lr >= 0 && !exif_entry_get_value( entry, stime_original, stime_original_size ) )
DUF_MAKE_ERROR( lr, DUF_ERROR_EXIF );
{
char *corrected_time = NULL;
for ( int i = 0; i < strlen( stime_original ); i++ )
{
char c;
c = stime_original[i];
if ( ( c < ' ' || c > 'z' ) && c != '?' && c != ':' && c != ' ' )
{
DUF_TRACE( exif, 0, ">>>>>>>>>>>>>> %s <<<<<<<<<<<<<", stime_original );
DUF_MAKE_ERROR( lr, DUF_ERROR_EXIF_BROKEN_DATE );
break;
}
}
if ( lr >= 0 )
corrected_time = mas_strdup( stime_original );
/* DUF_SHOW_ERROR( "@@@@@@@@@@@@@@ %s", stime_original ); */
DUF_TRACE( exif, 3, "stime_original:%s", stime_original );
/* 2008:06:21 13:18:19 */
/* 0123:56:89 12:45:78 */
if ( lr >= 0 )
{
char *pq;
while ( ( pq = strchr( corrected_time, '?' ) ) )
{
int n;
n = pq - corrected_time;
if ( n < 4 )
{
if ( n > 1 )
*pq = '9';
}
else if ( n == 5 || n == 6 )
{
corrected_time[5] = '1';
corrected_time[6] = '2';
}
else if ( n == 8 || n == 9 )
{
corrected_time[8] = '3';
corrected_time[9] = '1';
}
else if ( n == 11 || n == 12 || n == 14 || n == 15 || n == 17 || n == 18 )
{
corrected_time[n] = '0';
}
changed++;
}
}
if ( lr >= 0 && !*corrected_time )
DUF_MAKE_ERROR( lr, DUF_ERROR_EXIF_NO_DATE );
else if ( lr >= 0 && strchr( corrected_time, '?' ) )
{
DUF_SHOW_ERROR( "broken date %s", corrected_time );
DUF_MAKE_ERROR( lr, DUF_ERROR_EXIF_BROKEN_DATE );
}
if ( lr >= 0 || lr == DUF_ERROR_EXIF_BROKEN_DATE )
{
if ( corrected_time && *corrected_time )
{
struct tm times = { 0 };
strptime( corrected_time, "%Y:%m:%d %H:%M:%S", × );
/* timeepoch = mktime( × ); */
/* timeepoch = timelocal( × ); */
timeepoch = timegm( × );
/* strftime( buf1, sizeof( buf1 ), "%Y-%m-%d %H:%M:%S", × ); */
/* DUF_SHOW_ERROR( "!!!!! %lu : %lu", timeepoch, time(NULL) ); */
/* Don't bother printing it if it's entirely blank */
/* trim_spaces( corrected_time ); */
}
}
mas_free( corrected_time );
}
/* ??? exif_entry_free( entry ); */
}
else if ( 0 )
{
#if 0
# define exif_data_get_entry(d, t) (
exif_content_get_entry( d->ifd[EXIF_IFD_0], t ) ?
exif_content_get_entry( d->ifd[EXIF_IFD_0], t ) :
exif_content_get_entry( d->ifd[EXIF_IFD_1], t ) ?
exif_content_get_entry( d->ifd[EXIF_IFD_1], t ) :
exif_content_get_entry( d->ifd[EXIF_IFD_EXIF], t ) ?
exif_content_get_entry( d->ifd[EXIF_IFD_EXIF], t ) :
exif_content_get_entry( d->ifd[EXIF_IFD_GPS], t ) ?
exif_content_get_entry( d->ifd[EXIF_IFD_GPS], t ) :
exif_content_get_entry( d->ifd[EXIF_IFD_INTEROPERABILITY], t ) ? exif_content_get_entry( d->ifd[EXIF_IFD_INTEROPERABILITY], t ) : NULL )
#endif
DUF_MAKE_ERROR( lr, DUF_ERROR_EXIF_NO_DATE );
#if 0
if ( ( entry = exif_content_get_entry( edata->ifd[EXIF_IFD_0], EXIF_TAG_DATE_TIME_ORIGINAL ) ) )
DUF_SHOW_ERROR( "NO DATE - HAS +1" );
else if ( ( entry = exif_content_get_entry( edata->ifd[EXIF_IFD_1], EXIF_TAG_DATE_TIME_ORIGINAL ) ) )
DUF_SHOW_ERROR( "NO DATE - HAS +2" );
else if ( ( entry = exif_content_get_entry( edata->ifd[EXIF_IFD_EXIF], EXIF_TAG_DATE_TIME_ORIGINAL ) ) )
DUF_SHOW_ERROR( "NO DATE - HAS +3" );
#else
if ( ( entry = exif_data_get_entry( edata, EXIF_TAG_DATE_TIME_ORIGINAL ) ) )
DUF_SHOW_ERROR( "NO DATE - HAS +123" );
#endif
#if 0
else if ( ( entry = exif_content_get_entry( edata->ifd[EXIF_IFD_0], EXIF_TAG_DATE_TIME_DIGITIZED ) ) )
DUF_SHOW_ERROR( "NO DATE - HAS +4" );
else if ( ( entry = exif_content_get_entry( edata->ifd[EXIF_IFD_1], EXIF_TAG_DATE_TIME_DIGITIZED ) ) )
DUF_SHOW_ERROR( "NO DATE - HAS +5" );
else if ( ( entry = exif_content_get_entry( edata->ifd[EXIF_IFD_EXIF], EXIF_TAG_DATE_TIME_DIGITIZED ) ) )
DUF_SHOW_ERROR( "NO DATE - HAS +6" );
#else
else if ( ( entry = exif_data_get_entry( edata, EXIF_TAG_DATE_TIME_DIGITIZED ) ) )
DUF_SHOW_ERROR( "NO DATE - HAS +456" );
#endif
#if 0
else if ( ( entry = exif_content_get_entry( edata->ifd[EXIF_IFD_0], EXIF_TAG_DATE_TIME ) ) )
DUF_SHOW_ERROR( "NO DATE - HAS +7" );
else if ( ( entry = exif_content_get_entry( edata->ifd[EXIF_IFD_1], EXIF_TAG_DATE_TIME ) ) )
DUF_SHOW_ERROR( "NO DATE - HAS +8" );
else if ( ( entry = exif_content_get_entry( edata->ifd[EXIF_IFD_EXIF], EXIF_TAG_DATE_TIME ) ) )
DUF_SHOW_ERROR( "NO DATE - HAS +9" );
#else
else if ( ( entry = exif_data_get_entry( edata, EXIF_TAG_DATE_TIME ) ) )
DUF_SHOW_ERROR( "NO DATE - HAS +789" );
#endif
else
DUF_SHOW_ERROR( "NO DATE" );
/* ??? exif_entry_free( entry ); */
}
/* Function to populate TSK Blackboard exif related attributes */
void extractExifData(ExifData * exifData, TskFile * pFile)
{
std::map<ExifTag, TSK_ATTRIBUTE_TYPE>::iterator it;
std::vector<TskBlackboardAttribute> attrs;
std::string datetime = "";
int timezone = 0;
for (it = tagMap.begin(); it != tagMap.end(); ++it)
{
ExifEntry * exifEntry = exif_data_get_entry(exifData, it->first);
char tag_data[256];
if (exifEntry == NULL)
continue;
if (it->first == EXIF_TAG_GPS_LATITUDE ||
it->first == EXIF_TAG_GPS_LONGITUDE)
{
// Check for the EXIF_IFD_GPS image file directory to avoid interoperability value
ExifIfd ifd = exif_entry_get_ifd(exifEntry);
if (ifd != EXIF_IFD_GPS)
continue;
exif_entry_get_value(exifEntry, tag_data, 256);
float decDegrees = getDecimalDegrees(tag_data);
char refValue[2];
if (it->first == EXIF_TAG_GPS_LATITUDE)
{
// Get the latitude reference value; used to determine if positive or negative decimal value
ExifEntry * latitudeRef = exif_data_get_entry(exifData, it->first);
exif_entry_get_value(latitudeRef, refValue,2);
if (strcmp(refValue, "S") == 0)
decDegrees *= -1;
}
else
{
// Get the longitude reference value; used to determine if positive or negative decimal value
ExifEntry * longitudeRef = exif_data_get_entry(exifData, it->first);
exif_entry_get_value(longitudeRef, refValue,2);
if (strcmp(refValue, "W") == 0)
decDegrees *= -1;
}
TskBlackboardAttribute attr(it->second, name(), "", decDegrees);
attrs.push_back(attr);
}
else if (it->first == EXIF_TAG_GPS_SPEED)
{
// Check for the EXIF_IFD_GPS image file directory to avoid interoperability value
ExifIfd ifd = exif_entry_get_ifd(exifEntry);
if (ifd != EXIF_IFD_GPS)
continue;
//Get the GPS speed value
exif_entry_get_value(exifEntry, tag_data, 256);
float speed = getGPSSpeed(tag_data);
char refValue[2];
//Get the GPS speed reference value
ExifEntry * speedRef = exif_data_get_entry(exifData, it->first);
exif_entry_get_value(speedRef, refValue,2);
//Convert Kilometers per hour to meters per second
if (strcmp(refValue, "K") == 0)
{
speed *= 0.277778;
}
//Convert Miles per hour to meters per second
if (strcmp(refValue, "M") == 0)
{
speed *= 0.44704;
}
//Convert Knots to meters per second
if (strcmp(refValue, "N") == 0)
{
speed *= 0.514444;
}
TskBlackboardAttribute attr(it->second, name(), "", speed);
attrs.push_back(attr);
}
else if (it->first == EXIF_TAG_DATE_TIME_ORIGINAL)
{
exif_entry_get_value(exifEntry, tag_data, 256);
datetime = std::string(tag_data);
}
else if(it->first == EXIF_TAG_TIME_ZONE_OFFSET){
exif_entry_get_value(exifEntry, tag_data, 256);
timezone = atoi(tag_data);
}
else
{
// Get the tag's data
exif_entry_get_value(exifEntry, tag_data, 256);
// Add tag data to blackboard
TskBlackboardAttribute attr(it->second, name(), "", tag_data);
attrs.push_back(attr);
}
}
if(!datetime.empty()){
Poco::DateTime parsedDT;
int tzd;
Poco::DateTimeParser::tryParse(datetime, parsedDT, tzd);
if(timezone)
parsedDT.makeUTC(timezone);
else
parsedDT.makeUTC(tzd);
TskBlackboardAttribute attr(TSK_DATETIME, name(), "", (uint64_t)parsedDT.utcTime());
attrs.push_back(attr);
}
if(attrs.size() > 0){
TskBlackboardArtifact art = pFile->createArtifact(TSK_METADATA_EXIF);
for(size_t i = 0; i < attrs.size(); i++){
art.addAttribute(attrs[i]);
}
}
}
