static void
compare_aperture_value (ExifEntry * entry, ExifTagCheckData * testdata)
{
gdouble gst_value, exif_value;
ExifSRational rational;
GValue value = { 0 };
if (!gst_tag_list_get_double_index (testdata->taglist,
GST_TAG_CAPTURING_FOCAL_RATIO, 0, &gst_value)) {
GST_WARNING ("Failed to get focal ratio from taglist");
return;
}
rational = exif_get_srational (entry->data,
exif_data_get_byte_order (entry->parent->parent));
g_value_init (&value, GST_TYPE_FRACTION);
gst_value_set_fraction (&value, rational.numerator, rational.denominator);
gst_util_fraction_to_double (gst_value_get_fraction_numerator (&value),
gst_value_get_fraction_denominator (&value), &exif_value);
g_value_unset (&value);
exif_value = pow (2, exif_value / 2);
GST_LOG ("Aperture value in gst=%lf and in exif=%lf", gst_value, exif_value);
fail_unless (ABS (gst_value - exif_value) < 0.001);
testdata->result = TRUE;
}
static bool readExif(const char* path, float& shutter)
{
ExifData* data = exif_data_new_from_file(path);
if (data == nullptr)
return false;
ExifEntry *shutterEnt;
shutterEnt = exif_content_get_entry(data->ifd[EXIF_IFD_EXIF],
EXIF_TAG_EXPOSURE_TIME);
if(!shutterEnt)
shutterEnt = exif_content_get_entry(data->ifd[EXIF_IFD_0],
EXIF_TAG_EXPOSURE_TIME);
if(!shutterEnt)
shutterEnt = exif_content_get_entry(data->ifd[EXIF_IFD_1],
EXIF_TAG_EXPOSURE_TIME);
if(shutterEnt == NULL){
fprintf(stderr, "Error: Cannot read photography info.\n");
exif_data_unref(data);
return false;
}
char buf[1024];
exif_entry_get_value(shutterEnt, buf, sizeof(buf));
printf("shutter = %s\n", buf);
ExifSRational r;
r = exif_get_srational(shutterEnt->data, exif_data_get_byte_order(data));
shutter = (float)r.numerator / (float)r.denominator;
// Close
exif_data_unref(data);
return true;
}
static void entry_getdata_aux (lua_State *L, ExifEntry *entry, unsigned int n) {
ExifFormat format = entry->format;
size_t formatsize = (size_t)exif_format_get_size(format);
const unsigned char *ptr = entry->data+formatsize*n;
ExifByteOrder order = exif_data_get_byte_order(entry->parent->parent);
switch (format) {
case EXIF_FORMAT_BYTE: lua_pushinteger(L, (ExifByte)*ptr); break;
case EXIF_FORMAT_SBYTE: lua_pushinteger(L, (ExifSByte)*ptr); break;
case EXIF_FORMAT_SHORT: lua_pushinteger(L, exif_get_short(ptr, order)); break;
case EXIF_FORMAT_SSHORT: lua_pushinteger(L, exif_get_sshort(ptr, order)); break;
case EXIF_FORMAT_LONG: lua_pushnumber(L, exif_get_long(ptr, order)); break;
case EXIF_FORMAT_SLONG: lua_pushinteger(L, exif_get_slong(ptr, order)); break;
case EXIF_FORMAT_RATIONAL: {
ExifRational rat = exif_get_rational(ptr, order);
pushrational(L, rat.numerator, rat.denominator);
break;
}
case EXIF_FORMAT_SRATIONAL: {
ExifSRational rat = exif_get_srational(ptr, order);
pushrational(L, rat.numerator, rat.denominator);
break;
}
case EXIF_FORMAT_ASCII: lua_pushinteger(L, *ptr); break;
default:
lua_pushnil(L);
break;
}
}
static void
compare_shutter_speed (ExifEntry * entry, ExifTagCheckData * testdata)
{
gdouble gst_num, exif_num;
ExifSRational rational;
GValue exif_value = { 0 };
const GValue *gst_value = NULL;
gst_value = gst_tag_list_get_value_index (testdata->taglist,
GST_TAG_CAPTURING_SHUTTER_SPEED, 0);
if (gst_value == NULL) {
GST_WARNING ("Failed to get shutter-speed from taglist");
return;
}
rational = exif_get_srational (entry->data,
exif_data_get_byte_order (entry->parent->parent));
g_value_init (&exif_value, GST_TYPE_FRACTION);
gst_value_set_fraction (&exif_value, rational.numerator,
rational.denominator);
gst_util_fraction_to_double (gst_value_get_fraction_numerator (&exif_value),
gst_value_get_fraction_denominator (&exif_value), &exif_num);
g_value_unset (&exif_value);
gst_util_fraction_to_double (gst_value_get_fraction_numerator (gst_value),
gst_value_get_fraction_denominator (gst_value), &gst_num);
exif_num = pow (2, -exif_num);
GST_LOG ("Shutter speed in gst=%lf and in exif=%lf", gst_num, exif_num);
fail_unless (ABS (gst_num - exif_num) < 0.001);
testdata->result = TRUE;
}
static double exifDouble(ExifEntry *entry, ExifByteOrder byte_order) {
switch (entry->format) {
case EXIF_FORMAT_BYTE:
return double(entry->data[0]);
case EXIF_FORMAT_SHORT:
return double(exif_get_short(entry->data, byte_order));
case EXIF_FORMAT_LONG:
return double(exif_get_long(entry->data, byte_order));
case EXIF_FORMAT_RATIONAL: {
ExifRational r = exif_get_rational(entry->data, byte_order);
return double(r.numerator)/double(r.denominator);
}
case EXIF_FORMAT_SBYTE:
return double(*(signed char *)entry->data);
case EXIF_FORMAT_SSHORT:
return double(exif_get_sshort(entry->data, byte_order));
case EXIF_FORMAT_SLONG:
return double(exif_get_slong(entry->data, byte_order));
case EXIF_FORMAT_SRATIONAL: {
ExifSRational r = exif_get_srational(entry->data, byte_order);
return double(r.numerator)/double(r.denominator);
}
case EXIF_FORMAT_FLOAT:
return double(((float *)entry->data)[0]);
case EXIF_FORMAT_DOUBLE:
return ((double *)entry->data)[0];
default:
return nan(0);
}
}
/* Does both signed and unsigned rationals from a double*.
*
* Don't change the exit entry if the value currently there is a good
* approximation of the double we are trying to set.
*/
static void
vips_exif_set_double( ExifData *ed,
ExifEntry *entry, unsigned long component, void *data )
{
double value = *((double *) data);
ExifByteOrder bo;
size_t sizeof_component;
size_t offset;
double old_value;
if( entry->components <= component ) {
VIPS_DEBUG_MSG( "vips_exif_set_double: "
"too few components\n" );
return;
}
/* Wait until after the component check to make sure we cant get /0.
*/
bo = exif_data_get_byte_order( ed );
sizeof_component = entry->size / entry->components;
offset = component * sizeof_component;
VIPS_DEBUG_MSG( "vips_exif_set_double: %s = %g\n",
vips_exif_entry_get_name( entry ), value );
if( entry->format == EXIF_FORMAT_RATIONAL ) {
ExifRational rv;
rv = exif_get_rational( entry->data + offset, bo );
old_value = (double) rv.numerator / rv.denominator;
if( VIPS_FABS( old_value - value ) > 0.0001 ) {
vips_exif_double_to_rational( value, &rv );
VIPS_DEBUG_MSG( "vips_exif_set_double: %u / %u\n",
rv.numerator,
rv.denominator );
exif_set_rational( entry->data + offset, bo, rv );
}
}
else if( entry->format == EXIF_FORMAT_SRATIONAL ) {
ExifSRational srv;
srv = exif_get_srational( entry->data + offset, bo );
old_value = (double) srv.numerator / srv.denominator;
if( VIPS_FABS( old_value - value ) > 0.0001 ) {
vips_exif_double_to_srational( value, &srv );
VIPS_DEBUG_MSG( "vips_exif_set_double: %d / %d\n",
srv.numerator, srv.denominator );
exif_set_srational( entry->data + offset, bo, srv );
}
}
}
MapTags *read_sgeo_tags_map(ExifData **exif_array, ExifIfd ifd, ExifShort map_count)
{
int i;
MapTags *map_data = NULL;
ExifData *exif = NULL;
ExifEntry *entry;
ExifByteOrder order;
SGeoTag stag;
ExifSRational *srational = NULL;
ExifLong *elong = NULL;
order = exif_data_get_byte_order(exif);
map_data = (MapTags* )calloc(map_count, sizeof(*map_data));
for (i = 0; i < map_count; i++)
{
exif = exif_array[i];
entry = exif_content_get_entry (exif->ifd[ifd], (ExifTag)(SGEO_TAG_MAP_VERSION));
if (entry)
memcpy(map_data[i].VersionID, entry->data, sizeof(map_data[i].VersionID));
entry = exif_content_get_entry (exif->ifd[ifd], (ExifTag)(SGEO_TAG_MAP_ID));
if (entry)
map_data[i].ID = exif_get_long(entry->data, order);
srational = &map_data[i].TopLeftLongitude;
for (stag = SGEO_TAG_MAP_TOP_LEFT_LONGITUDE; stag <= SGEO_TAG_MAP_BOTTOM_RIGHT_LATITUDE; stag++)
{
entry = exif_content_get_entry (exif->ifd[ifd], (ExifTag)(stag));
if (entry)
*srational = exif_get_srational(entry->data, order);
srational++;
}
elong = &map_data[i].CoordinateSystem;
for (stag = SGEO_TAG_MAP_COORDINATE_SYSTEM; stag <= SGEO_TAG_MAP_THUMBNAIL_FORMAT; stag++)
{
entry = exif_content_get_entry (exif->ifd[ifd], (ExifTag)(stag));
if (entry)
*elong = exif_get_long(entry->data, order);
elong++;
}
entry = exif_content_get_entry (exif->ifd[ifd], (ExifTag)(SGEO_TAG_MAP_THUMBNAIL));
if (entry)
{
map_data[i].Data = (void *)malloc(entry->size);
map_data[i].DataSize = entry->size;
memcpy(map_data[i].Data, entry->data, entry->size);
}
}
return map_data;
}
static int
vips_exif_get_srational( ExifData *ed,
ExifEntry *entry, unsigned long component, ExifSRational *out )
{
if( entry->format == EXIF_FORMAT_SRATIONAL ) {
ExifByteOrder bo = exif_data_get_byte_order( ed );
size_t sizeof_component = entry->size / entry->components;
size_t offset = component * sizeof_component;
*out = exif_get_srational( entry->data + offset, bo );
}
else
return( -1 );
return( 0 );
}
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;
}
}
void imFileFormatJPEG::iReadExifAttrib(unsigned char* data, int data_length, imAttribTable* attrib_table)
{
ExifData* exif = exif_data_new_from_data(data, data_length);
if (!exif)
return;
void* value = NULL;
int c, value_size = 0;
ExifByteOrder byte_order = exif_data_get_byte_order(exif);
for (int ifd = 0; ifd < EXIF_IFD_COUNT; ifd++)
{
if (ifd == EXIF_IFD_1 || ifd == EXIF_IFD_INTEROPERABILITY) // Skip thumbnail and interoperability
continue;
ExifContent *content = exif->ifd[ifd];
if (content && content->count)
{
for (int j = 0; j < (int)content->count; j++)
{
ExifEntry *entry = content->entries[j];
int type = 0;
const char* name = exif_tag_get_name_in_ifd(entry->tag, (ExifIfd)ifd);
if (!name)
continue;
if (value_size < (int)entry->size)
{
value = realloc(value, entry->size);
value_size = entry->size;
}
int format_size = exif_format_get_size(entry->format);
if (entry->tag == EXIF_TAG_RESOLUTION_UNIT)
{
int res_unit = (int)exif_get_short (entry->data, byte_order);
if (res_unit == 2)
attrib_table->Set("ResolutionUnit", IM_BYTE, -1, "DPI");
else if (res_unit == 3)
attrib_table->Set("ResolutionUnit", IM_BYTE, -1, "DPC");
continue;
}
switch (entry->format)
{
case EXIF_FORMAT_UNDEFINED:
case EXIF_FORMAT_ASCII:
case EXIF_FORMAT_SBYTE:
case EXIF_FORMAT_BYTE:
{
type = IM_BYTE;
imbyte *bvalue = (imbyte*)value;
for (c = 0; c < (int)entry->components; c++)
bvalue[c] = entry->data[c];
}
break;
case EXIF_FORMAT_SSHORT:
{
type = IM_SHORT;
short *svalue = (short*)value;
for (c = 0; c < (int)entry->components; c++)
svalue[c] = exif_get_short(entry->data + format_size * c, byte_order);
}
break;
case EXIF_FORMAT_SHORT:
{
type = IM_USHORT;
imushort *usvalue = (imushort*)value;
for (c = 0; c < (int)entry->components; c++)
usvalue[c] = exif_get_short(entry->data + format_size * c, byte_order);
}
break;
case EXIF_FORMAT_LONG:
{
type = IM_INT;
int *ivalue = (int*)value;
for (c = 0; c < (int)entry->components; c++)
ivalue[c] = (int)exif_get_long(entry->data + format_size * c, byte_order);
}
break;
case EXIF_FORMAT_SLONG:
{
type = IM_INT;
int *ivalue = (int*)value;
for (c = 0; c < (int)entry->components; c++)
ivalue[c] = (int)exif_get_slong(entry->data + format_size * c, byte_order);
}
break;
case EXIF_FORMAT_RATIONAL:
{
ExifRational v_rat;
type = IM_FLOAT;
float *fvalue = (float*)value;
for (c = 0; c < (int)entry->components; c++)
{
v_rat = exif_get_rational(entry->data + format_size * c, byte_order);
fvalue[c] = (float)v_rat.numerator / (float)v_rat.denominator;
}
}
break;
case EXIF_FORMAT_SRATIONAL:
{
ExifSRational v_srat;
type = IM_FLOAT;
float *fvalue = (float*)value;
for (c = 0; c < (int)entry->components; c++)
{
v_srat = exif_get_srational(entry->data + format_size * c, byte_order);
fvalue[c] = (float)v_srat.numerator / (float)v_srat.denominator;
}
}
break;
case EXIF_FORMAT_FLOAT: // defined but unsupported in libEXIF
case EXIF_FORMAT_DOUBLE: // defined but unsupported in libEXIF
break;
}
attrib_table->Set(name, type, entry->components, value);
}
}
}
if (value) free(value);
exif_data_free(exif);
}
static void
metadataparse_exif_content_foreach_entry_func (ExifEntry * entry,
void *user_data)
{
MEUserData *meudata = (MEUserData *) user_data;
GType type = G_TYPE_NONE;
ExifByteOrder byte_order;
const gchar *tag;
/* We need the byte order */
if (!entry || !entry->parent || !entry->parent->parent)
return;
tag = metadataparse_exif_get_tag_from_exif (entry->tag, &type);
byte_order = exif_data_get_byte_order (entry->parent->parent);
if (metadataparse_handle_unit_tags (entry, meudata, byte_order))
goto done;
if (!tag)
goto done;
if (type == GST_TYPE_FRACTION) {
gint numerator = 0;
gint denominator = 1;
switch (entry->format) {
case EXIF_FORMAT_SRATIONAL:
{
ExifSRational v_srat;
v_srat = exif_get_srational (entry->data, byte_order);
if (v_srat.denominator) {
numerator = (gint) v_srat.numerator;
denominator = (gint) v_srat.denominator;
}
}
break;
case EXIF_FORMAT_RATIONAL:
{
ExifRational v_rat;
v_rat = exif_get_rational (entry->data, byte_order);
if (v_rat.denominator) {
numerator = (gint) v_rat.numerator;
denominator = (gint) v_rat.denominator;
}
if (meudata->resolution_unit == 3) {
/* converts from cm to inches */
if (entry->tag == EXIF_TAG_X_RESOLUTION
|| entry->tag == EXIF_TAG_Y_RESOLUTION) {
numerator *= 2;
denominator *= 5;
}
}
}
break;
default:
GST_ERROR ("Unexpected Tag Type");
goto done;
break;
}
gst_tag_list_add (meudata->taglist, meudata->mode, tag, numerator,
denominator, NULL);
} else if (type == GST_TYPE_BUFFER) {
GstBuffer *buf = gst_buffer_new_and_alloc (entry->components);
memcpy (GST_BUFFER_DATA (buf), entry->data, entry->components);
gst_tag_list_add (meudata->taglist, meudata->mode, tag, buf, NULL);
gst_buffer_unref (buf);
} else {
switch (type) {
case G_TYPE_STRING:
{
char buf[2048];
const gchar *str = exif_entry_get_value (entry, buf, sizeof (buf));
GString *value = NULL;
if (entry->tag == EXIF_TAG_DATE_TIME_DIGITIZED
|| entry->tag == EXIF_TAG_DATE_TIME
|| entry->tag == EXIF_TAG_DATE_TIME_ORIGINAL) {
value = g_string_new_len (str, 20);
/* 20 is enough memory to hold "YYYY-MM-DDTHH:MM:SS" */
if (metadataparse_exif_convert_to_datetime (value)) {
str = value->str;
} else {
GST_ERROR ("Unexpected date & time format for %s", tag);
str = NULL;
}
}
if (str)
gst_tag_list_add (meudata->taglist, meudata->mode, tag, str, NULL);
if (value)
g_string_free (value, TRUE);
}
break;
case G_TYPE_INT:
/* fall through */
case G_TYPE_UINT:
{
gint value;
switch (entry->format) {
case EXIF_FORMAT_SHORT:
value = exif_get_short (entry->data, byte_order);
break;
case EXIF_FORMAT_LONG:
value = exif_get_long (entry->data, byte_order);
break;
default:
GST_ERROR ("Unexpected Exif Tag Type (%s - %s)",
tag, exif_format_get_name (entry->format));
goto done;
break;
}
if (entry->tag == EXIF_TAG_CONTRAST ||
entry->tag == EXIF_TAG_SATURATION) {
switch (value) {
case 0:
break;
case 1:
value = -67; /* -100-34 /2 */
break;
case 2:
value = 67; /* 100+34 /2 */
break;
default:
GST_ERROR ("Unexpected value");
break;
}
}
gst_tag_list_add (meudata->taglist, meudata->mode, tag, value, NULL);
}
break;
case G_TYPE_DOUBLE:
{
gdouble value = 0.0;
if (entry->tag == EXIF_TAG_GPS_LATITUDE
|| entry->tag == EXIF_TAG_GPS_LONGITUDE) {
ExifRational *rt = (ExifRational *) entry->data;
/* DDD - degrees */
value = (gdouble) rt->numerator / (gdouble) rt->denominator;
GST_DEBUG ("deg: %lu / %lu", (gulong) rt->numerator,
(gulong) rt->denominator);
rt++;
/* MM - minutes and SS - seconds */
GST_DEBUG ("min: %lu / %lu", (gulong) rt->numerator,
(gulong) rt->denominator);
value += (gdouble) rt->numerator / ((gdouble) rt->denominator * 60.0);
rt++;
GST_DEBUG ("sec: %lu / %lu", (gulong) rt->numerator,
(gulong) rt->denominator);
value +=
(gdouble) rt->numerator / ((gdouble) rt->denominator * 3600.0);
/* apply sign */
if (entry->tag == EXIF_TAG_GPS_LATITUDE) {
if (((meudata->latitude_ref == 'S') && (value > 0.0)) ||
((meudata->latitude_ref == 'N') && (value < 0.0))) {
value = -value;
}
} else {
if (((meudata->longitude_ref == 'W') && (value > 0.0)) ||
((meudata->longitude_ref == 'E') && (value < 0.0))) {
value = -value;
}
}
GST_DEBUG ("long/lat : %lf", value);
}
if (entry->tag == EXIF_TAG_GPS_ALTITUDE) {
ExifRational v_rat = exif_get_rational (entry->data, byte_order);
value = (gdouble) v_rat.numerator / (gdouble) v_rat.denominator;
if (((meudata->altitude_ref == 1) && (value > 0.0)) ||
((meudata->altitude_ref == 0) && (value < 0.0))) {
value = -value;
}
GST_DEBUG ("altitude = %lf", value);
}
gst_tag_list_add (meudata->taglist, meudata->mode, tag, value, NULL);
}
break;
default:
break;
}
}
done:
{
#ifndef GST_DISABLE_GST_DEBUG
char buf[2048];
GST_LOG ("\n Entry %p: %s (%s)\n"
" Size, Comps: %d, %d\n"
" Value: %s\n"
" Title: %s\n"
" Description: %s\n",
entry,
exif_tag_get_name (entry->tag),
exif_format_get_name (entry->format),
entry->size,
(int) (entry->components),
exif_entry_get_value (entry, buf, sizeof (buf)),
exif_tag_get_title (entry->tag), exif_tag_get_description (entry->tag));
#endif
}
return;
}
void generateDecryptData(SGeoTagsEncrypt *collection, unsigned char *data, unsigned int size, ExifByteOrder order)
{
ExifEntry *entry = NULL;
ExifData *exif = NULL;
ExifContent *content = NULL;
// create new exif data
exif = exif_data_new_mem (exif_mem_new_default());
exif->priv->order = order;
// fill exif fields
exif_data_load_data_content(exif, EXIF_IFD_ENCRYPT, data, size, 0, 0);
content = exif->ifd[EXIF_IFD_ENCRYPT];
// excrypt version
exif_mem_read(collection->VersionID, NULL, content, SGEO_TAG_ENCRYPT_VERSION, sizeof(collection->VersionID));
// FileName
read_unicode_string_from_exif(content, SGEO_TAG_ENCRYPT_FILE_NAME, collection->FileName, sizeof(collection->FileName) / sizeof(*collection->FileName));
// FileSize
exif_long_read(&collection->FileSize, NULL, content, SGEO_TAG_ENCRYPT_FILE_SIZE, order);
// datetime
exif_mem_read(collection->DateTimeOriginal, &collection->ExistDateTimeOriginal, content, EXIF_TAG_DATE_TIME_ORIGINAL, sizeof(collection->DateTimeOriginal));
// Longitude
exif_srational_read(&collection->Longitude, &collection->ExistLongitude, content, SGEO_TAG_LONGITUDE, order);
// LongAccuracy
exif_rational_read(&collection->LongitudeAccuracy, &collection->ExistLongitudeAccuracy, content, SGEO_TAG_LONGACCURACY, order);
// Latitude
exif_srational_read(&collection->Latitude, &collection->ExistLatitude, content, SGEO_TAG_LATITUDE, order);
// LatAccuracy
exif_rational_read(&collection->LatitudeAccuracy, &collection->ExistLatitudeAccuracy, content, SGEO_TAG_LATACCURACY, order);
// Altitude
exif_srational_read(&collection->Altitude, &collection->ExistAltitude, content, SGEO_TAG_ALTITUDE, order);
// AltAccuracy
exif_rational_read(&collection->AltitudeAccuracy, &collection->ExistAltitudeAccuracy, content, SGEO_TAG_ALTACCURACY, order);
// Azimuth
exif_srational_read(&collection->Altitude, &collection->ExistAltitude, content, SGEO_TAG_ALTITUDE, order);
entry = exif_content_get_entry (content, (ExifTag)(SGEO_TAG_AZIMUTH));
if (entry) collection->Azimuth = exif_get_srational(entry->data, order);
// AzimuthAccuracy
exif_rational_read(&collection->AzimuthAccuracy, &collection->ExistAzimuthAccuracy, content, SGEO_TAG_AZIMUTHACCURACY, order);
// Pitch
exif_srational_read(&collection->Pitch, &collection->ExistPitch, content, SGEO_TAG_PITCH, order);
// PitchAccuracy
exif_rational_read(&collection->PitchAccuracy, &collection->ExistPitchAccuracy, content, SGEO_TAG_PITCHACCURACY, order);
// Roll
exif_srational_read(&collection->Roll, &collection->ExistRoll, content, SGEO_TAG_ROLL, order);
// RollAccuracy
exif_rational_read(&collection->RollAccuracy, &collection->ExistRollAccuracy, content, SGEO_TAG_ROLLACCURACY, order);
// HViewAngle
exif_rational_read(&collection->HViewAngle, &collection->ExistHViewAngle, content, SGEO_TAG_HVIEWANGLE, order);
// HViewAngleAccuracy
exif_rational_read(&collection->HViewAngleAccuracy, &collection->ExistHViewAngleAccuracy, content, SGEO_TAG_HVIEWANGLEACCURACY, order);
// VViewAngle
exif_rational_read(&collection->VViewAngle, &collection->ExistVViewAngle, content, SGEO_TAG_VVIEWANGLE, order);
// VViewAngleAccuracy
exif_rational_read(&collection->VViewAngleAccuracy, &collection->ExistVViewAngleAccuracy, content, SGEO_TAG_VVIEWANGLEACCURACY, order);
// SatCount
exif_mem_read(&collection->SatCount, NULL, content, SGEO_TAG_SATCOUNT, sizeof(collection->SatCount));
// global time
exif_mem_read(&collection->GlobalTime, &collection->ExistGlobalTime, content, SGEO_TAG_GLOBAL_TIME, sizeof(collection->GlobalTime));
// GNSSType
exif_long_read(&collection->GNSSType, NULL, content, SGEO_TAG_GNSS_TYPE, order);
// DeviceName
read_unicode_string_from_exif(content, SGEO_TAG_DEVICE_NAME, collection->DeviceName, sizeof(collection->DeviceName) / sizeof(*collection->DeviceName));
// DeviceIMEI
read_unicode_string_from_exif(content, SGEO_TAG_DEVICE_IMEI, collection->DeviceIMEI, sizeof(collection->DeviceIMEI) / sizeof(*collection->DeviceIMEI));
// DeviceNumber
read_unicode_string_from_exif(content, SGEO_TAG_DEVICE_NUMBER, collection->DeviceNumber, sizeof(collection->DeviceNumber) / sizeof(*collection->DeviceNumber));
// DeviceOS
read_unicode_string_from_exif(content, SGEO_TAG_DEVICE_OS, collection->DeviceOS, sizeof(collection->DeviceOS) / sizeof(*collection->DeviceOS));
// DeviceOSVersion
read_unicode_string_from_exif(content, SGEO_TAG_DEVICE_OS_VERSION, collection->DeviceOSVersion, sizeof(collection->DeviceOSVersion) / sizeof(*collection->DeviceOSVersion));
// DeviceVersion
read_unicode_string_from_exif(content, SGEO_TAG_DEVICE_VERSION, collection->DeviceVersion, sizeof(collection->DeviceVersion) / sizeof(*collection->DeviceVersion));
// DeviceDateTimeMeasure
exif_mem_read(&collection->DeviceDateTimeMeasure, NULL, content, SGEO_TAG_DEVICE_DATE_TIME_MEASURE, sizeof(collection->DeviceDateTimeMeasure));
// ProgramVersion
read_unicode_string_from_exif(content, SGEO_TAG_PROGRAM_VERSION, collection->ProgramVersion, sizeof(collection->ProgramVersion) / sizeof(*collection->ProgramVersion));
// ProgramName
read_unicode_string_from_exif(content, SGEO_TAG_PROGRAM_NAME, collection->ProgramName, sizeof(collection->ProgramName) / sizeof(*collection->ProgramName));
// ProgramUserName
read_unicode_string_from_exif(content, SGEO_TAG_PROGRAM_USER_NAME, collection->ProgramUserName, sizeof(collection->ProgramUserName) / sizeof(*collection->ProgramUserName));
exif_data_unref(exif);
}
SGeoTags read_sgeo_tags(ExifContent *content, ExifByteOrder order)
{
int i = 0;
unsigned char *buf = NULL;
SGeoTags collect = {0};
ExifEntry *entry = NULL;
//ExifContent *content = exif->ifd[EXIF_IFD_SGEO];
SGeoTags *collection = NULL;
collection = &collect;
// Longitude
exif_srational_read(&collection->Longitude, &collection->ExistLongitude, content, SGEO_TAG_LONGITUDE, order);
// LongAccuracy
exif_rational_read(&collection->LongitudeAccuracy, &collection->ExistLongitudeAccuracy, content, SGEO_TAG_LONGACCURACY, order);
// Latitude
exif_srational_read(&collection->Latitude, &collection->ExistLatitude, content, SGEO_TAG_LATITUDE, order);
// LatAccuracy
exif_rational_read(&collection->LatitudeAccuracy, &collection->ExistLatitudeAccuracy, content, SGEO_TAG_LATACCURACY, order);
// Altitude
exif_srational_read(&collection->Altitude, &collection->ExistAltitude, content, SGEO_TAG_ALTITUDE, order);
// AltAccuracy
exif_rational_read(&collection->AltitudeAccuracy, &collection->ExistAltitudeAccuracy, content, SGEO_TAG_ALTACCURACY, order);
// Azimuth
exif_srational_read(&collection->Azimuth, &collection->ExistAzimuth, content, SGEO_TAG_AZIMUTH, order);
// AzimuthAccuracy
exif_rational_read(&collection->AzimuthAccuracy, &collection->ExistAzimuthAccuracy, content, SGEO_TAG_AZIMUTHACCURACY, order);
// Pitch
exif_srational_read(&collection->Pitch, &collection->ExistPitch, content, SGEO_TAG_PITCH, order);
// PitchAccuracy
exif_rational_read(&collection->PitchAccuracy, &collection->ExistPitchAccuracy, content, SGEO_TAG_PITCHACCURACY, order);
// Roll
exif_srational_read(&collection->Roll, &collection->ExistRoll, content, SGEO_TAG_ROLL, order);
// RollAccuracy
exif_rational_read(&collection->RollAccuracy, &collection->ExistRollAccuracy, content, SGEO_TAG_ROLLACCURACY, order);
// HViewAngle
exif_rational_read(&collection->HViewAngle, &collection->ExistHViewAngle, content, SGEO_TAG_HVIEWANGLE, order);
// HViewAngleAccuracy
exif_rational_read(&collection->HViewAngleAccuracy, &collection->ExistHViewAngleAccuracy, content, SGEO_TAG_HVIEWANGLEACCURACY, order);
// VViewAngle
exif_rational_read(&collection->VViewAngle, &collection->ExistVViewAngle, content, SGEO_TAG_VVIEWANGLE, order);
// VViewAngleAccuracy
exif_rational_read(&collection->VViewAngleAccuracy, &collection->ExistVViewAngleAccuracy, content, SGEO_TAG_VVIEWANGLEACCURACY, order);
// SatCount
exif_mem_read(&collection->SatCount, &collection->ExistSatCount, content, SGEO_TAG_SATCOUNT, sizeof(collection->SatCount));
// global time
exif_mem_read(collection->GlobalTime, &collection->ExistGlobalTime, content, SGEO_TAG_GLOBAL_TIME, sizeof(collection->GlobalTime));
// UserLongitude
exif_srational_read(&collection->UserLongitude, NULL, content, SGEO_TAG_USER_LONGITUDE, order);
// UserLongAccuracy
exif_rational_read(&collection->UserLongitudeAccuracy, NULL, content, SGEO_TAG_USER_LONGACCURACY, order);
// UserLatitude
exif_srational_read(&collection->UserLatitude, NULL, content, SGEO_TAG_USER_LATITUDE, order);
// UserLatAccuracy
exif_rational_read(&collection->UserLatitudeAccuracy, NULL, content, SGEO_TAG_USER_LATACCURACY, order);
// UserAltitude
exif_srational_read(&collection->UserAltitude, NULL, content, SGEO_TAG_USER_ALTITUDE, order);
// UserAltAccuracy
exif_rational_read(&collection->UserAltitudeAccuracy, NULL, content, SGEO_TAG_USER_ALTACCURACY, order);
// UserEarthLavel
exif_srational_read(&collection->UserEarthLevel, NULL, content, SGEO_TAG_USER_EARTH_LEVEL, order);
// UserAzimuth
exif_srational_read(&collection->UserAzimuth, NULL, content, SGEO_TAG_USER_AZIMUTH, order);
// UserAzimuthAccuracy
exif_rational_read(&collection->UserAzimuthAccuracy, NULL, content, SGEO_TAG_USER_AZIMUTHACCURACY, order);
// UserPitch
exif_srational_read(&collection->UserPitch, NULL, content, SGEO_TAG_USER_PITCH, order);
// UserPitchAccuracy
exif_rational_read(&collection->UserPitchAccuracy, NULL, content, SGEO_TAG_USER_PITCHACCURACY, order);
// UserRoll
exif_srational_read(&collection->UserRoll, NULL, content, SGEO_TAG_USER_ROLL, order);
// UserRollAccuracy
exif_rational_read(&collection->UserRollAccuracy, NULL, content, SGEO_TAG_USER_ROLLACCURACY, order);
// UserHViewAngle
exif_rational_read(&collection->UserHViewAngle, NULL, content, SGEO_TAG_USER_HVIEWANGLE, order);
// UserHViewAngleAccuracy
exif_rational_read(&collection->UserHViewAngleAccuracy, NULL, content, SGEO_TAG_USER_HVIEWANGLEACCURACY, order);
// UserVViewAngle
exif_rational_read(&collection->UserVViewAngle, NULL, content, SGEO_TAG_USER_VVIEWANGLE, order);
// UserVViewAngleAccuracy
exif_rational_read(&collection->UserVViewAngleAccuracy, NULL, content, SGEO_TAG_USER_VVIEWANGLEACCURACY, order);
// UserDeviceName
read_unicode_string_from_exif(content, SGEO_TAG_USER_DEVICE_NAME, collection->UserDeviceName, sizeof(collection->UserDeviceName) / sizeof(*collection->UserDeviceName));
// UserProgramName
read_unicode_string_from_exif(content, SGEO_TAG_USER_PROGRAM_NAME, collection->UserProgramName, sizeof(collection->UserProgramName) / sizeof(*collection->UserProgramName));
// UserUserName
read_unicode_string_from_exif(content, SGEO_TAG_USER_USER_NAME, collection->UserUserName, sizeof(collection->UserUserName) / sizeof(*collection->UserUserName));
// ResultLongitude
exif_srational_read(&collection->ResultLongitude, NULL, content, SGEO_TAG_RESULT_LONGITUDE, order);
// ResultLongAccuracy
exif_rational_read(&collection->ResultLongitudeAccuracy, NULL, content, SGEO_TAG_RESULT_LONGACCURACY, order);
// ResultLatitude
exif_srational_read(&collection->ResultLatitude, NULL, content, SGEO_TAG_RESULT_LATITUDE, order);
// ResultLatAccuracy
exif_rational_read(&collection->ResultLatitudeAccuracy, NULL, content, SGEO_TAG_RESULT_LATACCURACY, order);
// ResultAltitude
exif_srational_read(&collection->ResultAltitude, NULL, content, SGEO_TAG_RESULT_ALTITUDE, order);
// ResultAltAccuracy
exif_rational_read(&collection->ResultAltitudeAccuracy, NULL, content, SGEO_TAG_RESULT_ALTACCURACY, order);
// ResultAzimuth
exif_srational_read(&collection->ResultAzimuth, NULL, content, SGEO_TAG_RESULT_AZIMUTH, order);
// ResultAzimuthAccuracy
exif_rational_read(&collection->ResultAzimuthAccuracy, NULL, content, SGEO_TAG_RESULT_AZIMUTHACCURACY, order);
// ResultPitch
exif_srational_read(&collection->ResultPitch, NULL, content, SGEO_TAG_RESULT_PITCH, order);
// ResultPitchAccuracy
exif_rational_read(&collection->ResultPitchAccuracy, NULL, content, SGEO_TAG_RESULT_PITCHACCURACY, order);
// ResultRoll
exif_srational_read(&collection->ResultRoll, NULL, content, SGEO_TAG_RESULT_ROLL, order);
// ResultRollAccuracy
exif_rational_read(&collection->ResultRollAccuracy, NULL, content, SGEO_TAG_RESULT_ROLLACCURACY, order);
// ResultHViewAngle
exif_rational_read(&collection->ResultHViewAngle, NULL, content, SGEO_TAG_RESULT_HVIEWANGLE, order);
// ResultHViewAngleAccuracy
exif_rational_read(&collection->ResultHViewAngleAccuracy, NULL, content, SGEO_TAG_RESULT_HVIEWANGLEACCURACY, order);
// ResultVViewAngle
exif_rational_read(&collection->ResultVViewAngle, NULL, content, SGEO_TAG_RESULT_VVIEWANGLE, order);
// ResultVViewAngleAccuracy
exif_rational_read(&collection->ResultVViewAngleAccuracy, NULL, content, SGEO_TAG_RESULT_VVIEWANGLEACCURACY, order);
// GNSSType
exif_long_read(&collection->GNSSType, NULL, content, SGEO_TAG_GNSS_TYPE, order);
// DeviceName
read_unicode_string_from_exif(content, SGEO_TAG_DEVICE_NAME, collection->DeviceName, sizeof(collection->DeviceName) / sizeof(*collection->DeviceName));
// DeviceIMEI
read_unicode_string_from_exif(content, SGEO_TAG_DEVICE_IMEI, collection->DeviceIMEI, sizeof(collection->DeviceIMEI) / sizeof(*collection->DeviceIMEI));
// DeviceNumber
read_unicode_string_from_exif(content, SGEO_TAG_DEVICE_NUMBER, collection->DeviceNumber, sizeof(collection->DeviceNumber) / sizeof(*collection->DeviceNumber));
// DeviceOS
read_unicode_string_from_exif(content, SGEO_TAG_DEVICE_OS, collection->DeviceOS, sizeof(collection->DeviceOS) / sizeof(*collection->DeviceOS));
// DeviceOSVersion
read_unicode_string_from_exif(content, SGEO_TAG_DEVICE_OS_VERSION, collection->DeviceOSVersion, sizeof(collection->DeviceOSVersion) / sizeof(*collection->DeviceOSVersion));
// DeviceVersion
read_unicode_string_from_exif(content, SGEO_TAG_DEVICE_VERSION, collection->DeviceVersion, sizeof(collection->DeviceVersion) / sizeof(*collection->DeviceVersion));
// DeviceDateTimeMeasure
exif_mem_read(collection->DeviceDateTimeMeasure, NULL, content, SGEO_TAG_DEVICE_DATE_TIME_MEASURE, sizeof(collection->DeviceDateTimeMeasure));
// ProgramVersion
read_unicode_string_from_exif(content, SGEO_TAG_PROGRAM_VERSION, collection->ProgramVersion, sizeof(collection->ProgramVersion) / sizeof(*collection->ProgramVersion));
// ProgramName
read_unicode_string_from_exif(content, SGEO_TAG_PROGRAM_NAME, collection->ProgramName, sizeof(collection->ProgramName) / sizeof(*collection->ProgramName));
// ProgramUserName
read_unicode_string_from_exif(content, SGEO_TAG_PROGRAM_USER_NAME, collection->ProgramUserName, sizeof(collection->ProgramUserName) / sizeof(*collection->ProgramUserName));
// ObjectType
//entry = exif_content_get_entry (content, (ExifTag)(SGEO_TAG_OBJECT_TYPE));
//if (entry) collection.ObjectType = *entry->data;
// object data
//entry = exif_content_get_entry (content, (ExifTag)(SGEO_TAG_OBJECT_DATA));
//if (entry)
//{
// collection->ObjectDataSize = 0;
// collection->ObjectData = (ExifByte* )malloc(entry->size);
// if (collection->ObjectData)
// {
// collection->ObjectDataSize = entry->size;
// memcpy(collection->ObjectData, exif->data, collection->ObjectDataSize);
// }
//}
// encrypted table
entry = exif_content_get_entry (content, (ExifTag)(SGEO_TAG_ENCRYPT_TABLE));
if (entry)
{
exif_long_read(&collection->SGeoEncrypt.Type, NULL, content, SGEO_TAG_ENCRYPT_TYPE, order);
exif_mem_read(collection->SGeoEncrypt.AlgorithmVersion, NULL, content, SGEO_TAG_ENCRYPT_ALGORITHM_VERSION, sizeof(collection->SGeoEncrypt.AlgorithmVersion));
exif_mem_read(collection->SGeoEncrypt.PublicKey, NULL, content, SGEO_TAG_ENCRYPT_PUBLIC_KEY, sizeof(collection->SGeoEncrypt.PublicKey));
xorCryptData(entry->data, entry->size);
generateDecryptData(&collection->SGeoEncrypt, entry->data, entry->size, order);
}
#ifdef _SGEO_FULL
// Sighting
collection->UserSightingCount = 0;
entry = exif_content_get_entry (content, (ExifTag)(SGEO_TAG_SIGHTING));
if (entry)
{
collection->UserSightingCount = entry->size / sizeof(SightingTags);
collection->UserSightingData = (SightingTags* )malloc(sizeof(*collection->UserSightingData) * collection->UserSightingCount);
buf = entry->data;
for (i = 0; i < collection->UserSightingCount; i++)
{
collection->UserSightingData[i].Angle = exif_get_srational(buf, order);
buf += sizeof(ExifSRational);
collection->UserSightingData[i].Flags = *buf;
buf++;
}
}
#endif
// read objects
collection->ObjectsTableCount = 60;
collection->ObjectsTable = (SGeoObject *)calloc(collection->ObjectsTableCount, sizeof(*collection->ObjectsTable));
exif_mem_read(collection->ObjectsTable, NULL, content, (ExifTag)SGEO_TAG_OBJECT_TABLE, sizeof(*collection->ObjectsTable) * collection->ObjectsTableCount);
return *collection;
}
static void foreach_exif_entry( ExifEntry * entry , void * _closure )
{
if ( ! entry )
{
return;
}
//.........................................................................
// Bail out of types we don't handle
switch( entry->format )
{
case EXIF_FORMAT_UNDEFINED:
case EXIF_FORMAT_FLOAT:
case EXIF_FORMAT_DOUBLE:
return;
default:
break;
}
//.........................................................................
unsigned char component_size = exif_format_get_size( entry->format );
ExifIfd ifd = exif_content_get_ifd( entry->parent );
const char * tag_name = exif_tag_get_name_in_ifd( entry->tag , ifd );
if ( ! tag_name || ! entry->data || ! entry->size || ! component_size || ! entry->components )
{
return;
}
//.........................................................................
// Add a prefix based on the IFD
String name( tag_name );
switch( ifd )
{
case EXIF_IFD_0:
name = "IMAGE/" + name;
break;
case EXIF_IFD_1:
name = "THUMBNAIL/" + name;
break;
case EXIF_IFD_EXIF:
name = "EXIF/" + name;
break;
case EXIF_IFD_GPS:
name = "GPS/" + name;
break;
case EXIF_IFD_INTEROPERABILITY:
name = "INTEROP/" + name;
break;
default:
return;
}
ExifClosure * closure = ( ExifClosure * ) _closure;
JSON::Object * tags = closure->tags;
//.........................................................................
// ASCII ones are easy
if ( entry->format == EXIF_FORMAT_ASCII )
{
(*tags)[ name ] = String( ( const char * ) entry->data , entry->size );
return;
}
//.........................................................................
if ( ( entry->components * component_size ) != entry->size )
{
return;
}
ExifByteOrder byte_order = exif_data_get_byte_order( closure->exif_data );
const unsigned char * data = entry->data;
JSON::Array array;
for ( unsigned long i = 0; i < entry->components; ++i )
{
switch( entry->format )
{
case EXIF_FORMAT_BYTE:
array.append( JSON::Value( int( * data ) ) );
break;
case EXIF_FORMAT_SHORT:
array.append( JSON::Value( int( exif_get_short( data , byte_order ) ) ) );
break;
case EXIF_FORMAT_LONG:
array.append( JSON::Value( int( exif_get_long( data , byte_order ) ) ) );
break;
case EXIF_FORMAT_SBYTE:
array.append( JSON::Value( int( * ( ( const char * ) data ) ) ) );
break;
case EXIF_FORMAT_SSHORT:
array.append( JSON::Value( exif_get_sshort( data , byte_order ) ) );
break;
case EXIF_FORMAT_SLONG:
array.append( JSON::Value( exif_get_slong( data , byte_order ) ) );
break;
// TODO: I don't like representing a rational number as a string with a slash,
case EXIF_FORMAT_SRATIONAL:
{
ExifSRational r = exif_get_srational( data , byte_order );
array.append( Util::format("%ld/%ld" , r.numerator , r.denominator ) );
break;
}
case EXIF_FORMAT_RATIONAL:
{
ExifRational r = exif_get_rational( data , byte_order );
array.append( Util::format("%lu/%lu" , r.numerator , r.denominator ) );
break;
}
default:
break;
}
data += component_size;
}
if ( array.size() == 1 )
{
(*tags)[ name ] = array[ 0 ];
}
else if ( array.size() > 1 )
{
(*tags)[ name ] = array;
}
}
