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ext/metadata/: Use core gsp tags.

Browse source 
Original commit message from CVS:
* ext/metadata/README:
* ext/metadata/metadataexif.c:
* ext/metadata/metadatatags.c:
* ext/metadata/metadatatags.h:
Use core gsp tags.
This commit is contained in:
Stefan Kost 2008-10-02 13:52:50 +00:00
parent 45738112d4
commit 1d13e695f6
5 changed files with 172 additions and 340 deletions
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8
ChangeLog
View file

@ -1,3 +1,11 @@
2008-10-02 Stefan Kost <ensonic@users.sf.net>
* ext/metadata/README:
* ext/metadata/metadataexif.c:
* ext/metadata/metadatatags.c:
* ext/metadata/metadatatags.h:
Use core gsp tags.
2008-09-30 Sebastian Dröge <sebastian.droege@collabora.co.uk>
* gst/flacparse/gstbaseparse.c: (gst_base_parse_finalize),

9
ext/metadata/README
View file

@ -87,3 +87,12 @@ Obs: By looking at the proposed design (1- view and 2- modify) seems that the me
application could send width and height tag events to the pipeline
* should metadatamux get info from caps (width and height) and use if not receive a event with such tags?
Testing
GST_DEBUG="*:2,metadata*:4"
gst-launch videotestsrc num-buffers=1 ! jpegenc ! taginject tags="geo-location-latitude=66.1,geo-location-longitude=22.5,geo-location-elevation=10.3" ! metadatamux ! filesink location="meta_test.jpeg"
exiv2 -pt pr meta_test.jpeg | grep "Exif.GPSInfo"
exif meta_test.jpeg
gst-launch -t filesrc location="meta_test.jpeg" ! metadatademux ! fakesink

437
ext/metadata/metadataexif.c
View file

@ -241,13 +241,13 @@ static MapIntStr mappedTags[] = {
GST_TAG_IMAGE_YRESOLUTION /*GST_TYPE_FRACTION*/}, /* inches */
{EXIF_TAG_GPS_ALTITUDE, /*RATIONAL,*/ EXIF_IFD_GPS,
GST_TAG_GPS_ALTITUDE /*GST_TYPE_FRACTION*/},
GST_TAG_GEO_LOCATION_ELEVATION /*G_TYPE_DOUBLE*/},
{EXIF_TAG_GPS_LATITUDE, /*RATIONAL(3),*/ EXIF_IFD_GPS,
GST_TAG_GPS_LATITUDE /*G_TYPE_STRING*/},
GST_TAG_GEO_LOCATION_LATITUDE /*G_TYPE_DOUBLE*/},
{EXIF_TAG_GPS_LONGITUDE, /*RATIONAL(3),*/ EXIF_IFD_GPS,
GST_TAG_GPS_LONGITUDE /*G_TYPE_STRING*/},
GST_TAG_GEO_LOCATION_LONGITUDE /*G_TYPE_DOUBLE*/},
{0, EXIF_IFD_COUNT, NULL}
};
@ -289,13 +289,6 @@ static gboolean metadataparse_exif_convert_to_datetime (GString * dt);
static gboolean metadatamux_exif_convert_from_datetime (GString * dt);
static gboolean
metadatamux_exif_convert_from_gps (guint8 * data, const char *lt, char *ref);
static gboolean
metadataparse_exif_convert_to_gps (const guint8 * data, GString * lt,
const int exif_tag, const MEUserData * meudata);
/*
* extern functions implementations
*/
@ -531,7 +524,6 @@ static void
metadataparse_exif_content_foreach_entry_func (ExifEntry * entry,
void *user_data)
{
char buf[2048];
MEUserData *meudata = (MEUserData *) user_data;
GType type = G_TYPE_NONE;
ExifByteOrder byte_order;
@ -573,14 +565,6 @@ metadataparse_exif_content_foreach_entry_func (ExifEntry * entry,
numerator = (gint) v_rat.numerator;
denominator = (gint) v_rat.denominator;
}
if (meudata->altitude_ref == 1) {
if (entry->tag == EXIF_TAG_GPS_ALTITUDE) {
if (numerator > 0)
numerator = -numerator;
if (denominator < 0)
denominator = -denominator;
}
}
if (meudata->resolution_unit == 3) {
/* converts from cm to inches */
if (entry->tag == EXIF_TAG_X_RESOLUTION
@ -610,6 +594,7 @@ metadataparse_exif_content_foreach_entry_func (ExifEntry * entry,
switch (type) {
case G_TYPE_STRING:
{
char buf[2048];
const gchar *str = exif_entry_get_value (entry, buf, sizeof (buf));
GString *value = NULL;
@ -626,17 +611,6 @@ metadataparse_exif_content_foreach_entry_func (ExifEntry * entry,
str = NULL;
}
} else if (entry->tag == EXIF_TAG_GPS_LATITUDE
|| entry->tag == EXIF_TAG_GPS_LONGITUDE) {
value = g_string_new_len (str, 11);
/* 21 is enough memory to hold "DDD:MM:SSk" */
if (metadataparse_exif_convert_to_gps (entry->data, value,
entry->tag, meudata)) {
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);
@ -682,15 +656,45 @@ metadataparse_exif_content_foreach_entry_func (ExifEntry * entry,
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;
rt++;
/* MM - minutes and SS - seconds */
if (rt->numerator % rt->denominator) {
value += (gdouble) rt->numerator / (gdouble) rt->denominator;
} else {
value += rt->numerator / rt->denominator;
rt++;
value += rt->numerator / rt->denominator;
}
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;
GST_DEBUG ("Altitude = %lf", value);
}
gst_tag_list_add (meudata->taglist, meudata->mode, tag, value, NULL);
}
break;
default:
break;
}
}
done:
{
char buf[2048];
GST_LOG ("\n Entry %p: %s (%s)\n"
" Size, Comps: %d, %d\n"
" Value: %s\n"
@ -703,7 +707,7 @@ done:
(int) (entry->components),
exif_entry_get_value (entry, buf, sizeof (buf)),
exif_tag_get_title (entry->tag), exif_tag_get_description (entry->tag));
}
return;
}
@ -754,64 +758,53 @@ metadataparse_handle_unit_tags (ExifEntry * entry, MEUserData * meudata,
GST_TAG_IMAGE_YRESOLUTION, value * 0.4f, NULL);
}
}
break;
case EXIF_TAG_GPS_ALTITUDE_REF:
{
const GValue *value = gst_tag_list_get_value_index (meudata->taglist,
GST_TAG_GPS_ALTITUDE, 0);
gdouble value;
meudata->altitude_ref = entry->data[0];
if (value) {
gint n, d;
n = gst_value_get_fraction_numerator (value);
d = gst_value_get_fraction_denominator (value);
if (meudata->altitude_ref == 1) { /* bellow sea */
if (IS_FRACT_POSITIVE (n, d)) { /* if n * d > 0 */
if (gst_tag_list_get_double (meudata->taglist,
GST_TAG_GEO_LOCATION_ELEVATION, &value)) {
GST_DEBUG ("alt-ref: %d", meudata->altitude_ref);
if (((meudata->altitude_ref == 1) && (value > 0.0)) ||
((meudata->altitude_ref == 0) && (value < 0.0))) {
gst_tag_list_add (meudata->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_GPS_ALTITUDE, -n, d, NULL);
}
GST_TAG_GEO_LOCATION_ELEVATION, -value, NULL);
}
}
}
break;
case EXIF_TAG_GPS_LATITUDE_REF:
{
gchar *value = NULL;
gdouble value;
meudata->latitude_ref = entry->data[0];
if (gst_tag_list_get_string (meudata->taglist, GST_TAG_GPS_LATITUDE,
&value)) {
GString *str = g_string_new (value);
if (str->len == 10) {
str->str[9] = meudata->latitude_ref;
if (gst_tag_list_get_double (meudata->taglist,
GST_TAG_GEO_LOCATION_LATITUDE, &value)) {
GST_DEBUG ("lat-ref: %c", meudata->latitude_ref);
if (((meudata->latitude_ref == 'S') && (value > 0.0)) ||
((meudata->latitude_ref == 'N') && (value < 0.0))) {
gst_tag_list_add (meudata->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_GPS_LATITUDE, str->str, NULL);
GST_TAG_GEO_LOCATION_LATITUDE, -value, NULL);
}
g_string_free (str, TRUE);
}
}
break;
case EXIF_TAG_GPS_LONGITUDE_REF:
{
gchar *value = NULL;
gdouble value;
meudata->longitude_ref = entry->data[0];
if (gst_tag_list_get_string (meudata->taglist, GST_TAG_GPS_LONGITUDE,
&value)) {
GString *str = g_string_new (value);
if (str->len == 10) {
str->str[9] = meudata->longitude_ref;
if (gst_tag_list_get_double (meudata->taglist,
GST_TAG_GEO_LOCATION_LONGITUDE, &value)) {
GST_DEBUG ("lon-ref: %c", meudata->longitude_ref);
if (((meudata->longitude_ref == 'W') && (value > 0.0)) ||
((meudata->longitude_ref == 'E') && (value < 0.0))) {
gst_tag_list_add (meudata->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_GPS_LONGITUDE, str->str, NULL);
GST_TAG_GEO_LOCATION_LONGITUDE, -value, NULL);
}
g_string_free (str, TRUE);
}
}
break;
@ -897,33 +890,6 @@ metadatamux_exif_for_each_tag_in_list (const GstTagList * list,
{
ExifRational r;
if (entry->tag == EXIF_TAG_GPS_ALTITUDE) {
ExifEntry *ref_entry = NULL;
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 n * d > 0 */
if (IS_FRACT_POSITIVE (numerator, denominator)) {
ref_entry->data[0] = 0;
} else {
ref_entry->data[0] = 1;
}
exif_entry_unref (ref_entry);
}
if (entry->tag == EXIF_TAG_X_RESOLUTION ||
entry->tag == EXIF_TAG_Y_RESOLUTION) {
ExifEntry *unit_entry = NULL;
@ -960,14 +926,12 @@ metadatamux_exif_for_each_tag_in_list (const GstTagList * list,
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) {
@ -981,45 +945,13 @@ metadatamux_exif_for_each_tag_in_list (const GstTagList * list,
g_free (value);
value = datetime->str;
g_string_free (datetime, FALSE);
} else if (entry->tag == EXIF_TAG_GPS_LATITUDE
|| entry->tag == EXIF_TAG_GPS_LONGITUDE) {
char ref;
if (metadatamux_exif_convert_from_gps (entry->data, value, &ref)) {
ExifEntry *ref_entry = NULL;
const ExifTag ref_tag = entry->tag == EXIF_TAG_GPS_LATITUDE ?
EXIF_TAG_GPS_LATITUDE_REF : EXIF_TAG_GPS_LONGITUDE_REF;
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);
}
/* has already been add and it is not an Exif ASCII type */
g_free (value);
value = NULL;
}
if (value) {
} 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;
@ -1056,6 +988,89 @@ metadatamux_exif_for_each_tag_in_list (const GstTagList * list,
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;
rt->numerator = (gulong) v;
rt->denominator = 1;
v -= rt->numerator;
rt++;
rt->numerator = (gulong) (0.5 + value * 100.0);
rt->denominator = 100;
rt++;
rt->numerator = 0;
rt->denominator = 1;
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:
@ -1271,172 +1286,4 @@ done:
}
/*
* metadatamux_exif_convert_from_gps:
* @data: pointer to an array of 3 ExifRational in which gps will be stored
* @lt: a string containing the gps coordinate formated as "DDD,MM,SSk"
* or "DDD,MM.mmk" (this is the same as specified in XMP).
* @ref: at the end will store the reference ('N', 'S', 'E', 'W')
*
* This function converts from the format "DDD,MM,SSk" or "DDD,MM.mmk"
* (the same as specified in XMP) into Exif coordinates.
* D- degrees, M- minutes, S- seconds, k- 'N', 'S', 'E', 'W'
* (North, South, East, West)
*
* Returns:
* <itemizedlist>
* <listitem><para>%TRUE if converted sucessfull
* </para></listitem>
* <listitem><para>%FALSE if @lt is bad formated
* </para></listitem>
* </itemizedlist>
*/
static gboolean
metadatamux_exif_convert_from_gps (guint8 * data, const char *lt, char *ref)
{
/* "DDD,MM,SSk" or "DDD,MM.mmk" */
/* 0123456789 0123456789 */
gboolean ret = TRUE;
char *p = (char *) lt;
ExifRational *rt = (ExifRational *) data;
if (strlen (lt) != 10)
goto error;
if (lt[6] == ',' || lt[6] == '.') {
if (IS_NUMBER (*p) && IS_NUMBER (*(p + 1)) && IS_NUMBER (*(p + 2))) {
rt->numerator = CHAR_TO_INT (*p) * 100;
p++;
rt->numerator += CHAR_TO_INT (*p) * 10;
p++;
rt->numerator += CHAR_TO_INT (*p);
p++;
rt->denominator = 1;
} else {
goto error;
}
p++;
rt++;
if (IS_NUMBER (*p) && IS_NUMBER (*(p + 1))) {
rt->numerator = CHAR_TO_INT (*p) * 10;
p++;
rt->numerator += CHAR_TO_INT (*p);
p++;
rt->denominator = 1;
} else {
goto error;
}
p++;
rt++;
if (IS_NUMBER (*p) && IS_NUMBER (*(p + 1))) {
rt->numerator = CHAR_TO_INT (*p) * 10;
p++;
rt->numerator += CHAR_TO_INT (*p);
p++;
rt->denominator = 1;
} else {
goto error;
}
} else {
goto error;
}
if (lt[9] != 'N' && lt[9] != 'S' && lt[9] != 'E' && lt[9] != 'W')
goto error;
*ref = lt[9];
goto done;
error:
ret = FALSE;
done:
return ret;
}
/*
* metadatamux_exif_convert_from_gps:
* @data: pointer to an array of 3 ExifRational from which gps will be read
* @lt: at the end this will have the gps coordinate formated as "DDD,MM,SSk"
* or "DDD,MM.mmk" (this is the same as specified in XMP).
* @exif_tag: EXIF_TAG_GPS_LATITUDE or EXIF_TAG_GPS_LONGITUDE
* @meudata: at the end will store the reference ('N', 'S', 'E', 'W')
* in @meudata->latitude_ref or meudata->longitude_ref depending on @exif_tag
*
* This function converts from Exif coordinates to the format "DDD,MM,SSk"
* or "DDD,MM.mmk" (the same as specified in XMP).
* D- degrees, M- minutes, S- seconds, k- 'N', 'S', 'E', 'W'
* (North, South, East, West)
* Precondition: @lt->allocated_len must be at least 11.
*
* Returns:
* <itemizedlist>
* <listitem><para>%TRUE if converted sucessfull
* </para></listitem>
* <listitem><para>%FALSE if error
* </para></listitem>
* </itemizedlist>
*/
static gboolean
metadataparse_exif_convert_to_gps (const guint8 * data, GString * lt,
const int exif_tag, const MEUserData * meudata)
{
ExifRational *rt = (ExifRational *) data;
char *str = lt->str;
gboolean ret = TRUE;
char ref;
if (lt->allocated_len < 11)
goto error;
if (exif_tag == EXIF_TAG_GPS_LATITUDE)
ref = meudata->latitude_ref;
else if (exif_tag == EXIF_TAG_GPS_LONGITUDE)
ref = meudata->longitude_ref;
else
goto error;
/* DDD - degrees */
sprintf (str, "%03u,", rt->numerator / rt->denominator);
rt++;
str += 4;
/* MM - minutes and SS - seconds */
if (rt->numerator % rt->denominator) {
sprintf (str, "%05.02f", (float) rt->numerator / (float) rt->denominator);
str += 5;
*str++ = ref;
*str = '\0';
} else {
sprintf (str, "%02u,", rt->numerator / rt->denominator);
str += 3;
rt++;
sprintf (str, "%02u", rt->numerator / rt->denominator);
str += 2;
*str++ = ref;
*str = '\0';
}
/* if here, everything is ok */
goto done;
error:
ret = FALSE;
done:
/* FIXME: do we need to check if the date is valid ? */
if (ret)
lt->len = 10;
return ret;
}
#endif /* else (ifndef HAVE_EXIF) */

29
ext/metadata/metadatatags.c
View file

@ -427,35 +427,6 @@ metadata_tags_exif_register (void)
gst_tag_register (GST_TAG_IMAGE_YRESOLUTION, GST_TAG_FLAG_META,
GST_TYPE_FRACTION, GST_TAG_IMAGE_YRESOLUTION,
"Vertical resolution in pixels per inch", NULL);
/* GPS tags */
/* Altitude:
* positive values means above the sea level
* negative values means under the sea level
*/
gst_tag_register (GST_TAG_GPS_ALTITUDE, GST_TAG_FLAG_META,
GST_TYPE_FRACTION, GST_TAG_GPS_ALTITUDE, "Altitude", NULL);
/* Latitude:
* "DDD,MM,SSk" or "DDD,MM.mmk" fixed size string where:
* D- degrees, M- minutes, S-seconds,
* mm- fraction of minutes, k- N (north) or S (south)
*/
gst_tag_register (GST_TAG_GPS_LATITUDE, GST_TAG_FLAG_META,
G_TYPE_STRING, GST_TAG_GPS_LATITUDE, "Latitude", NULL);
/* Longitude:
* "DDD,MM,SSk" or "DDD,MM.mmk" fixed size string where:
* D- degrees, M- minutes, S-seconds,
* mm- fraction of minutes, k- N (north) or S (south)
*/
gst_tag_register (GST_TAG_GPS_LONGITUDE, GST_TAG_FLAG_META,
G_TYPE_STRING, GST_TAG_GPS_LONGITUDE, "Longitude", NULL);
}
/*

3
ext/metadata/metadatatags.h
View file

@ -116,13 +116,10 @@ typedef enum {
#define GST_TAG_IMAGE_XRESOLUTION "image-xresolution"
#define GST_TAG_IMAGE_YRESOLUTION "image-yresolution"
#define GST_TAG_GPS_ALTITUDE "gps-altitude"
#define GST_TAG_GPS_AREA_INFORMATION ""
#define GST_TAG_GPS_DIFFERENTIAL ""
#define GST_TAG_GPS_DOP ""
#define GST_TAG_GPS_IMAGE_DIRECTION ""
#define GST_TAG_GPS_LATITUDE "gps-latitude"
#define GST_TAG_GPS_LONGITUDE "gps-longitude"
#define GST_TAG_GPS_MEASURE_MODE ""
#define GST_TAG_GPS_PROCESSING_METHOD ""
#define GST_TAG_GPS_SATELLITES ""