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tag: xmp: Maps GST_TAG_DATE_TIME

Browse source 
Adds mapping for GST_TAG_DATE_TIME.
Tests included.

https://bugzilla.gnome.org/show_bug.cgi?id=594504
This commit is contained in:
Thiago Santos 2010-06-23 12:02:24 -03:00
parent 53318f20cc
commit 5e51a77df4
2 changed files with 159 additions and 2 deletions
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128
gst-libs/gst/tag/gstxmptag.c
View file

@ -41,6 +41,7 @@
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <ctype.h>
/*
* Serializes a GValue into a string.
@ -720,7 +721,7 @@ _init_xmp_tag_map ()
_xmp_tag_add_simple_mapping (GST_TAG_ARTIST, "dc:creator", NULL, NULL);
_xmp_tag_add_simple_mapping (GST_TAG_COPYRIGHT, "dc:rights", NULL, NULL);
_xmp_tag_add_simple_mapping (GST_TAG_DATE, "dc:date", NULL, NULL);
_xmp_tag_add_simple_mapping (GST_TAG_DATE, "exif:DateTimeOriginal", NULL,
_xmp_tag_add_simple_mapping (GST_TAG_DATE_TIME, "exif:DateTimeOriginal", NULL,
NULL);
_xmp_tag_add_simple_mapping (GST_TAG_DESCRIPTION, "dc:description", NULL,
NULL);
@ -875,7 +876,104 @@ read_one_tag (GstTagList * list, const gchar * tag, XmpTag * xmptag,
break;
}
default:
if (tag_type == GST_TYPE_DATE) {
if (tag_type == GST_TYPE_DATE_TIME) {
GstDateTime *datetime;
gint year = 0, month = 0, day = 0, hour = 0, minute = 0, second = 0;
gint usecs = 0;
gint gmt_offset_hour = -1, gmt_offset_min = -1, gmt_offset = -1;
gchar usec_str[16];
gint ret;
gint len;
len = strlen (v);
if (len == 0) {
GST_WARNING ("Empty string for datetime parsing");
return;
}
GST_DEBUG ("Parsing %s into a datetime", v);
ret = sscanf (v, "%04d-%02d-%02dT%02d:%02d:%02d.%15s",
&year, &month, &day, &hour, &minute, &second, usec_str);
if (ret < 3) {
/* FIXME theoretically, xmp can express datetimes with only year
* or year and month, but gstdatetime doesn't support it */
GST_WARNING ("Invalid datetime value: %s", v);
}
/* parse the usecs */
if (ret >= 7) {
gint num_digits = 0;
/* find the number of digits */
while (isdigit (usec_str[num_digits++]) && num_digits < 6);
if (num_digits > 0) {
/* fill up to 6 digits with 0 */
while (num_digits < 6) {
usec_str[num_digits++] = 0;
}
g_assert (num_digits == 6);
usec_str[num_digits] = '\0';
usecs = atoi (usec_str);
}
}
/* parse the timezone info */
if (v[len - 1] == 'Z') {
GST_LOG ("UTC timezone");
/* Having a Z at the end means UTC */
datetime = gst_date_time_new (year, month, day, hour, minute,
second, usecs, 0);
} else {
gchar *plus_pos = NULL;
gchar *neg_pos = NULL;
gchar *pos = NULL;
GST_LOG ("Checking for timezone information");
/* check if there is timezone info */
plus_pos = strrchr (v, '+');
neg_pos = strrchr (v, '-');
if (plus_pos) {
pos = plus_pos + 1;
} else if (neg_pos) {
pos = neg_pos + 1;
}
if (pos) {
gint ret_tz = sscanf (pos, "%d:%d", &gmt_offset_hour,
&gmt_offset_min);
GST_DEBUG ("Parsing timezone: %s", pos);
if (ret_tz == 2) {
gmt_offset = gmt_offset_hour * 60 + gmt_offset_min;
if (neg_pos != NULL && neg_pos + 1 == pos)
gmt_offset *= -1;
GST_LOG ("Timezone offset: %f (%d minutes)", gmt_offset / 60.0,
gmt_offset);
/* no way to know if it is DST or not */
datetime = gst_date_time_new (year, month, day, hour, minute,
second, usecs, gmt_offset / 60.0f);
} else {
GST_WARNING ("Failed to parse timezone information");
}
} else {
GST_WARNING ("No timezone signal found");
}
}
if (datetime) {
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE, tag, datetime, NULL);
gst_date_time_unref (datetime);
}
} else if (tag_type == GST_TYPE_DATE) {
GDate *date;
gint d, m, y;
@ -1201,6 +1299,32 @@ gst_value_serialize_xmp (const GValue * value)
return g_strdup_printf ("%04d-%02d-%02d",
(gint) g_date_get_year (date), (gint) g_date_get_month (date),
(gint) g_date_get_day (date));
} else if (G_VALUE_TYPE (value) == GST_TYPE_DATE_TIME) {
gint year, month, day, hour, min, sec, microsec;
gint gmt_offset = 0;
gint gmt_offset_hour, gmt_offset_min;
GstDateTime *datetime = (GstDateTime *) g_value_get_boxed (value);
year = gst_date_time_get_year (datetime);
month = gst_date_time_get_month (datetime);
day = gst_date_time_get_day (datetime);
hour = gst_date_time_get_hour (datetime);
min = gst_date_time_get_minute (datetime);
sec = gst_date_time_get_second (datetime);
microsec = gst_date_time_get_microsecond (datetime);
gmt_offset = (gint) (60 * gst_date_time_get_time_zone_offset (datetime));
if (gmt_offset == 0) {
/* UTC */
return g_strdup_printf ("%04d-%02d-%02dT%02d:%02d:%02d.%06dZ",
year, month, day, hour, min, sec, microsec);
} else {
gmt_offset_hour = ABS (gmt_offset) / 60;
gmt_offset_min = ABS (gmt_offset) % 60;
return g_strdup_printf ("%04d-%02d-%02dT%02d:%02d:%02d.%06d%c%02d:%02d",
year, month, day, hour, min, sec, microsec,
gmt_offset >= 0 ? '+' : '-', gmt_offset_hour, gmt_offset_min);
}
} else {
return NULL;
}

33
tests/check/libs/tag.c
View file

@ -870,6 +870,7 @@ tag_list_equals (GstTagList * taglist, GstTagList * taglist2)
n_recv = gst_structure_n_fields (taglist2);
n_sent = gst_structure_n_fields (taglist);
fail_unless (n_recv == n_sent);
fail_unless (n_sent > 0);
/* FIXME: compare taglist values */
for (i = 0; i < n_sent; i++) {
@ -935,6 +936,7 @@ GST_START_TEST (test_xmp_tags_serialization_deserialization)
{
GValue value = { 0 };
GDate *date;
GstDateTime *datetime;
g_value_init (&value, G_TYPE_STRING);
g_value_set_static_string (&value, "my string");
@ -1051,6 +1053,37 @@ GST_START_TEST (test_xmp_tags_serialization_deserialization)
g_value_set_uint (&value, 22);
do_xmp_tag_serialization_deserialization (GST_TAG_USER_RATING, &value);
g_value_unset (&value);
g_value_init (&value, GST_TYPE_DATE_TIME);
datetime = gst_date_time_new (2010, 6, 22, 12, 5, 10, 0, 0);
g_value_set_boxed (&value, datetime);
gst_date_time_unref (datetime);
do_xmp_tag_serialization_deserialization (GST_TAG_DATE_TIME, &value);
datetime = gst_date_time_new (2010, 6, 22, 12, 5, 10, 125, 0);
g_value_set_boxed (&value, datetime);
gst_date_time_unref (datetime);
do_xmp_tag_serialization_deserialization (GST_TAG_DATE_TIME, &value);
datetime = gst_date_time_new (2010, 6, 22, 12, 5, 10, 1, 0);
g_value_set_boxed (&value, datetime);
gst_date_time_unref (datetime);
do_xmp_tag_serialization_deserialization (GST_TAG_DATE_TIME, &value);
datetime = gst_date_time_new (2010, 6, 22, 12, 5, 10, 123456, 0);
g_value_set_boxed (&value, datetime);
gst_date_time_unref (datetime);
do_xmp_tag_serialization_deserialization (GST_TAG_DATE_TIME, &value);
datetime = gst_date_time_new (2010, 6, 22, 12, 5, 10, 123456, -3);
g_value_set_boxed (&value, datetime);
gst_date_time_unref (datetime);
do_xmp_tag_serialization_deserialization (GST_TAG_DATE_TIME, &value);
datetime = gst_date_time_new (2010, 6, 22, 12, 5, 10, 123456, 5);
g_value_set_boxed (&value, datetime);
gst_date_time_unref (datetime);
do_xmp_tag_serialization_deserialization (GST_TAG_DATE_TIME, &value);
datetime = gst_date_time_new_local_time (2010, 12, 2, 12, 5, 10, 43);
g_value_set_boxed (&value, datetime);
gst_date_time_unref (datetime);
do_xmp_tag_serialization_deserialization (GST_TAG_DATE_TIME, &value);
g_value_unset (&value);
}
GST_END_TEST;