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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-18 22:36:33 +00:00
tag: xmp: Adds new geo-location mappings
Adds GST_TAG_GEO_LOCATION_MOVEMENT_SPEED, GST_TAG_GEO_LOCATION_MOVEMENT_DIRECTION and GST_TAG_GEO_LOCATION_CAPTURE_DIRECTION to xmp mappings. Tests included.
This commit is contained in:
Thiago Santos
parent
a20aa39fa3
commit
e879fc9ca3
2 changed files with 304 additions and 6 deletions
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@ -190,6 +190,23 @@ out:
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return ret;
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}
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/* utility functions/macros */
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#define METERS_PER_SECOND_TO_KILOMETERS_PER_HOUR (3.6)
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#define KILOMETERS_PER_HOUR_TO_METERS_PER_SECOND (1/3.6)
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#define MILES_PER_HOUR_TO_METERS_PER_SECOND (0.44704)
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#define KNOTS_TO_METERS_PER_SECOND (0.514444)
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static gchar *
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double_to_fraction_string (gdouble num)
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{
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gint frac_n;
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gint frac_d;
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gst_util_double_to_fraction (num, &frac_n, &frac_d);
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return g_strdup_printf ("%d/%d", frac_n, frac_d);
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}
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/* (de)serialize functions */
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static gchar *
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serialize_exif_gps_coordinate (const GValue * value, gchar pos, gchar neg)
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@ -318,17 +335,13 @@ static gchar *
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serialize_exif_altitude (const GValue * value)
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{
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gdouble num;
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gint frac_n;
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gint frac_d;
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num = g_value_get_double (value);
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if (num < 0)
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num *= -1;
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gst_util_double_to_fraction (num, &frac_n, &frac_d);
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return g_strdup_printf ("%d/%d", frac_n, frac_d);
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return double_to_fraction_string (num);
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}
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static gchar *
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@ -422,6 +435,208 @@ deserialize_exif_altitude (GstTagList * taglist, const gchar * gst_tag,
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*pending_tags = g_slist_delete_link (*pending_tags, entry);
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}
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static gchar *
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serialize_exif_gps_speed (const GValue * value)
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{
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return double_to_fraction_string (g_value_get_double (value) *
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METERS_PER_SECOND_TO_KILOMETERS_PER_HOUR);
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}
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static gchar *
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serialize_exif_gps_speedref (const GValue * value)
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{
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/* we always use km/h */
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return g_strdup ("K");
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}
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static void
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deserialize_exif_gps_speed (GstTagList * taglist, const gchar * gst_tag,
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const gchar * xmp_tag, const gchar * str, GSList ** pending_tags)
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{
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const gchar *speed_str = NULL;
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const gchar *speedref_str = NULL;
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gint frac_n;
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gint frac_d;
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gdouble value;
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GSList *entry;
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PendingXmpTag *ptag = NULL;
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/* find the other missing part */
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if (strcmp (xmp_tag, "exif:GPSSpeed") == 0) {
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speed_str = str;
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for (entry = *pending_tags; entry; entry = g_slist_next (entry)) {
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ptag = (PendingXmpTag *) entry->data;
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if (strcmp (ptag->xmp_tag->tag_name, "exif:GPSSpeedRef") == 0) {
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speedref_str = ptag->str;
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break;
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}
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}
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} else if (strcmp (xmp_tag, "exif:GPSSpeedRef") == 0) {
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speedref_str = str;
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for (entry = *pending_tags; entry; entry = g_slist_next (entry)) {
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ptag = (PendingXmpTag *) entry->data;
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if (strcmp (ptag->xmp_tag->tag_name, "exif:GPSSpeed") == 0) {
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speed_str = ptag->str;
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break;
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}
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}
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} else {
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GST_WARNING ("Unexpected xmp tag %s", xmp_tag);
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return;
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}
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if (!speed_str) {
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GST_WARNING ("Missing exif:GPSSpeed tag");
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return;
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}
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if (!speedref_str) {
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GST_WARNING ("Missing exif:GPSSpeedRef tag");
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return;
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}
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if (sscanf (speed_str, "%d/%d", &frac_n, &frac_d) != 2) {
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GST_WARNING ("Failed to parse fraction: %s", speed_str);
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return;
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}
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gst_util_fraction_to_double (frac_n, frac_d, &value);
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if (speedref_str[0] == 'K') {
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value *= KILOMETERS_PER_HOUR_TO_METERS_PER_SECOND;
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} else if (speedref_str[0] == 'M') {
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value *= MILES_PER_HOUR_TO_METERS_PER_SECOND;
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} else if (speedref_str[0] == 'N') {
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value *= KNOTS_TO_METERS_PER_SECOND;
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} else {
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GST_WARNING ("Unexpected exif:SpeedRef value: %s", speedref_str);
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return;
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}
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/* add to the taglist */
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gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE,
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GST_TAG_GEO_LOCATION_MOVEMENT_SPEED, value, NULL);
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/* clean up entry */
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g_free (ptag->str);
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g_slice_free (PendingXmpTag, ptag);
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*pending_tags = g_slist_delete_link (*pending_tags, entry);
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}
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static gchar *
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serialize_exif_gps_direction (const GValue * value)
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{
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return double_to_fraction_string (g_value_get_double (value));
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}
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static gchar *
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serialize_exif_gps_directionref (const GValue * value)
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{
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/* T for true geographic direction (M would mean magnetic) */
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return g_strdup ("T");
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}
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static void
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deserialize_exif_gps_direction (GstTagList * taglist, const gchar * gst_tag,
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const gchar * xmp_tag, const gchar * str, GSList ** pending_tags,
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const gchar * direction_tag, const gchar * directionref_tag)
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{
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const gchar *dir_str = NULL;
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const gchar *dirref_str = NULL;
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gint frac_n;
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gint frac_d;
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gdouble value;
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GSList *entry;
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PendingXmpTag *ptag = NULL;
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/* find the other missing part */
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if (strcmp (xmp_tag, direction_tag) == 0) {
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dir_str = str;
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for (entry = *pending_tags; entry; entry = g_slist_next (entry)) {
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ptag = (PendingXmpTag *) entry->data;
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if (strcmp (ptag->xmp_tag->tag_name, directionref_tag) == 0) {
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dirref_str = ptag->str;
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break;
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}
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}
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} else if (strcmp (xmp_tag, directionref_tag) == 0) {
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dirref_str = str;
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for (entry = *pending_tags; entry; entry = g_slist_next (entry)) {
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ptag = (PendingXmpTag *) entry->data;
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if (strcmp (ptag->xmp_tag->tag_name, direction_tag) == 0) {
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dir_str = ptag->str;
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break;
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}
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}
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} else {
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GST_WARNING ("Unexpected xmp tag %s", xmp_tag);
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return;
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}
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if (!dir_str) {
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GST_WARNING ("Missing %s tag", dir_str);
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return;
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}
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if (!dirref_str) {
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GST_WARNING ("Missing %s tag", dirref_str);
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return;
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}
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if (sscanf (dir_str, "%d/%d", &frac_n, &frac_d) != 2) {
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GST_WARNING ("Failed to parse fraction: %s", dir_str);
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return;
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}
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gst_util_fraction_to_double (frac_n, frac_d, &value);
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if (dirref_str[0] == 'T') {
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/* nop */
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} else if (dirref_str[0] == 'M') {
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GST_WARNING ("Magnetic direction tags aren't supported yet");
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return;
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} else {
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GST_WARNING ("Unexpected %s value: %s", directionref_tag, dirref_str);
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return;
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}
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/* add to the taglist */
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gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, gst_tag, value, NULL);
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/* clean up entry */
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g_free (ptag->str);
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g_slice_free (PendingXmpTag, ptag);
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*pending_tags = g_slist_delete_link (*pending_tags, entry);
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}
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static void
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deserialize_exif_gps_track (GstTagList * taglist, const gchar * gst_tag,
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const gchar * xmp_tag, const gchar * str, GSList ** pending_tags)
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{
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deserialize_exif_gps_direction (taglist, gst_tag, xmp_tag, str, pending_tags,
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"exif:GPSTrack", "exif:GPSTrackRef");
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}
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static void
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deserialize_exif_gps_img_direction (GstTagList * taglist, const gchar * gst_tag,
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const gchar * xmp_tag, const gchar * str, GSList ** pending_tags)
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{
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deserialize_exif_gps_direction (taglist, gst_tag, xmp_tag, str, pending_tags,
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"exif:GPSImgDirection", "exif:GPSImgDirectionRef");
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}
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static void
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deserialize_xmp_rating (GstTagList * taglist, const gchar * gst_tag,
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const gchar * xmp_tag, const gchar * str, GSList ** pending_tags)
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@ -486,7 +701,7 @@ _init_xmp_tag_map ()
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"exif:GPSLongitude", serialize_exif_longitude,
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deserialize_exif_longitude);
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/* compound tag */
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/* compound exif tags */
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array = g_ptr_array_sized_new (2);
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xmpinfo = g_slice_new (XmpTag);
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xmpinfo->tag_name = "exif:GPSAltitude";
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@ -500,6 +715,45 @@ _init_xmp_tag_map ()
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g_ptr_array_add (array, xmpinfo);
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_xmp_tag_add_mapping (GST_TAG_GEO_LOCATION_ELEVATION, array);
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array = g_ptr_array_sized_new (2);
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xmpinfo = g_slice_new (XmpTag);
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xmpinfo->tag_name = "exif:GPSSpeed";
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xmpinfo->serialize = serialize_exif_gps_speed;
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xmpinfo->deserialize = deserialize_exif_gps_speed;
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g_ptr_array_add (array, xmpinfo);
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xmpinfo = g_slice_new (XmpTag);
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xmpinfo->tag_name = "exif:GPSSpeedRef";
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xmpinfo->serialize = serialize_exif_gps_speedref;
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xmpinfo->deserialize = deserialize_exif_gps_speed;
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g_ptr_array_add (array, xmpinfo);
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_xmp_tag_add_mapping (GST_TAG_GEO_LOCATION_MOVEMENT_SPEED, array);
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array = g_ptr_array_sized_new (2);
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xmpinfo = g_slice_new (XmpTag);
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xmpinfo->tag_name = "exif:GPSTrack";
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xmpinfo->serialize = serialize_exif_gps_direction;
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xmpinfo->deserialize = deserialize_exif_gps_track;
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g_ptr_array_add (array, xmpinfo);
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xmpinfo = g_slice_new (XmpTag);
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xmpinfo->tag_name = "exif:GPSTrackRef";
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xmpinfo->serialize = serialize_exif_gps_directionref;
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xmpinfo->deserialize = deserialize_exif_gps_track;
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g_ptr_array_add (array, xmpinfo);
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_xmp_tag_add_mapping (GST_TAG_GEO_LOCATION_MOVEMENT_DIRECTION, array);
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array = g_ptr_array_sized_new (2);
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xmpinfo = g_slice_new (XmpTag);
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xmpinfo->tag_name = "exif:GPSImgDirection";
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xmpinfo->serialize = serialize_exif_gps_direction;
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xmpinfo->deserialize = deserialize_exif_gps_img_direction;
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g_ptr_array_add (array, xmpinfo);
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xmpinfo = g_slice_new (XmpTag);
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xmpinfo->tag_name = "exif:GPSImgDirectionRef";
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xmpinfo->serialize = serialize_exif_gps_directionref;
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xmpinfo->deserialize = deserialize_exif_gps_img_direction;
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g_ptr_array_add (array, xmpinfo);
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_xmp_tag_add_mapping (GST_TAG_GEO_LOCATION_CAPTURE_DIRECTION, array);
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/* photoshop schema */
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_xmp_tag_add_simple_mapping (GST_TAG_GEO_LOCATION_COUNTRY,
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"photoshop:Country", NULL, NULL);
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@ -888,6 +888,17 @@ tag_list_equals (GstTagList * taglist, GstTagList * taglist2)
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g_free (vs);
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g_free (vr);
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}
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if (comparison != GST_VALUE_EQUAL &&
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G_VALUE_HOLDS (value_sent, G_TYPE_DOUBLE)) {
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gdouble vs;
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gdouble vr;
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/* add some tolerance for doubles */
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vs = g_value_get_double (value_sent);
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vr = g_value_get_double (value_recv);
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if (vr >= vs - 0.001 && vr <= vs + 0.001)
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comparison = GST_VALUE_EQUAL;
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}
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fail_unless (comparison == GST_VALUE_EQUAL,
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"tag item %s has been received with different type or value",
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name_sent);
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@ -971,6 +982,39 @@ GST_START_TEST (test_xmp_tags_serialization_deserialization)
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g_value_set_double (&value, -12.75);
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do_xmp_tag_serialization_deserialization (GST_TAG_GEO_LOCATION_ELEVATION,
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&value);
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g_value_set_double (&value, 0.0);
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do_xmp_tag_serialization_deserialization (GST_TAG_GEO_LOCATION_MOVEMENT_SPEED,
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&value);
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g_value_set_double (&value, 10.0);
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do_xmp_tag_serialization_deserialization (GST_TAG_GEO_LOCATION_MOVEMENT_SPEED,
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&value);
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g_value_set_double (&value, 786.125);
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do_xmp_tag_serialization_deserialization (GST_TAG_GEO_LOCATION_MOVEMENT_SPEED,
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&value);
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g_value_set_double (&value, -2.5);
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do_xmp_tag_serialization_deserialization (GST_TAG_GEO_LOCATION_MOVEMENT_SPEED,
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&value);
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g_value_set_double (&value, 0.0);
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do_xmp_tag_serialization_deserialization
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(GST_TAG_GEO_LOCATION_MOVEMENT_DIRECTION, &value);
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g_value_set_double (&value, 180.0);
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do_xmp_tag_serialization_deserialization
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(GST_TAG_GEO_LOCATION_MOVEMENT_DIRECTION, &value);
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g_value_set_double (&value, 359.99);
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do_xmp_tag_serialization_deserialization
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(GST_TAG_GEO_LOCATION_MOVEMENT_DIRECTION, &value);
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g_value_set_double (&value, 0.0);
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do_xmp_tag_serialization_deserialization
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(GST_TAG_GEO_LOCATION_CAPTURE_DIRECTION, &value);
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g_value_set_double (&value, 90.0);
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do_xmp_tag_serialization_deserialization
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(GST_TAG_GEO_LOCATION_CAPTURE_DIRECTION, &value);
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g_value_set_double (&value, 359.99);
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do_xmp_tag_serialization_deserialization
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(GST_TAG_GEO_LOCATION_CAPTURE_DIRECTION, &value);
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g_value_unset (&value);
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g_value_init (&value, GST_TYPE_DATE);
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