void QtCamMetaData::setDateTime(const QDateTime& dateTime) {
QDate d = dateTime.date();
QTime t = dateTime.time();
int day = d.day();
int month = d.month();
int year = d.year();
int hour = t.hour();
int minute = t.minute();
// GstDateTime seconds expects microseconds to be there too :|
gdouble seconds = t.second();
seconds += t.msec()/(1000.0);
// Current UTC time. Created through string so that the link between
// current and utc is lost and secsTo returns non-zero values.
QDateTime utcTime = QDateTime::fromString(dateTime.toUTC().toString());
gfloat tzoffset = (utcTime.secsTo(dateTime)/3600.0);
GstDateTime *dt = gst_date_time_new(tzoffset, year, month, day,
hour, minute, seconds);
d_ptr->addTag(GST_TAG_DATE_TIME, dt);
gst_date_time_unref(dt);
}
GstDateTime *
gst_date_time_new_local_time (gint year, gint month, gint day, gint hour,
gint minute, gdouble seconds)
{
GstDateTime *dt;
dt = gst_date_time_new (0, year, month, day, hour, minute, seconds);
gst_date_time_set_local_timezone (dt);
return dt;
}
GstDateTime *
gst_date_time_new_from_unix_epoch_utc (gint64 secs)
{
GstDateTime *dt;
struct tm tm;
time_t tt;
memset (&tm, 0, sizeof (tm));
tt = (time_t) secs;
#ifdef HAVE_GMTIME_R
gmtime_r (&tt, &tm);
#else
memcpy (&tm, gmtime (&tt), sizeof (struct tm));
#endif
dt = gst_date_time_new (0, tm.tm_year + 1900,
tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
return dt;
}
/**
* gst_date_time_new_from_iso8601_string:
* @string: ISO 8601-formatted datetime string.
*
* Tries to parse common variants of ISO-8601 datetime strings into a
* #GstDateTime. Possible input formats are (for example):
* 2012-06-30T22:46:43Z, 2012, 2012-06, 2012-06-30, 2012-06-30T22:46:43-0430,
* 2012-06-30T22:46Z, 2012-06-30T22:46-0430, 2012-06-30 22:46,
* 2012-06-30 22:46:43, 2012-06-00, 2012-00-00, 2012-00-30, 22:46:43Z, 22:46Z,
* 22:46:43-0430, 22:46-0430, 22:46:30, 22:46
* If no date is provided, it is assumed to be "today" in the timezone
* provided (if any), otherwise UTC.
*
* Free-function: gst_date_time_unref
*
* Returns: (transfer full) (nullable): a newly created #GstDateTime,
* or %NULL on error
*/
GstDateTime *
gst_date_time_new_from_iso8601_string (const gchar * string)
{
gint year = -1, month = -1, day = -1, hour = -1, minute = -1;
gint gmt_offset_hour = -99, gmt_offset_min = -99;
gdouble second = -1.0;
gfloat tzoffset = 0.0;
guint64 usecs;
gint len, ret;
g_return_val_if_fail (string != NULL, NULL);
GST_DEBUG ("Parsing '%s' into a datetime", string);
len = strlen (string);
/* The input string is expected to start either with a year (4 digits) or
* with an hour (2 digits). Hour must be followed by minute. In any case,
* the string must be at least 4 characters long and start with 2 digits */
if (len < 4 || !g_ascii_isdigit (string[0]) || !g_ascii_isdigit (string[1]))
return NULL;
if (g_ascii_isdigit (string[2]) && g_ascii_isdigit (string[3])) {
ret = sscanf (string, "%04d-%02d-%02d", &year, &month, &day);
if (ret == 0)
return NULL;
if (ret == 3 && day <= 0) {
ret = 2;
day = -1;
}
if (ret >= 2 && month <= 0) {
ret = 1;
month = day = -1;
}
if (ret >= 1 && (year <= 0 || year > 9999 || month > 12 || day > 31))
return NULL;
else if (ret >= 1 && len < 16)
/* YMD is 10 chars. XMD + HM will be 16 chars. if it is less,
* it make no sense to continue. We will stay with YMD. */
goto ymd;
string += 10;
/* Exit if there is no expeceted value on this stage */
if (!(*string == 'T' || *string == '-' || *string == ' '))
goto ymd;
string += 1;
}
/* if hour or minute fails, then we will use only ymd. */
hour = g_ascii_strtoull (string, (gchar **) & string, 10);
if (hour > 24 || *string != ':')
goto ymd;
/* minute */
minute = g_ascii_strtoull (string + 1, (gchar **) & string, 10);
if (minute > 59)
goto ymd;
/* second */
if (*string == ':') {
second = g_ascii_strtoull (string + 1, (gchar **) & string, 10);
/* if we fail here, we still can reuse hour and minute. We
* will still attempt to parse any timezone information */
if (second > 59) {
second = -1.0;
} else {
/* microseconds */
if (*string == '.' || *string == ',') {
const gchar *usec_start = string + 1;
guint digits;
usecs = g_ascii_strtoull (string + 1, (gchar **) & string, 10);
if (usecs != G_MAXUINT64 && string > usec_start) {
digits = (guint) (string - usec_start);
second += (gdouble) usecs / pow (10.0, digits);
}
}
}
}
if (*string == 'Z')
goto ymd_hms;
else {
/* reuse some code from gst-plugins-base/gst-libs/gst/tag/gstxmptag.c */
gint gmt_offset = -1;
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 (string, '+');
neg_pos = strrchr (string, '-');
if (plus_pos)
pos = plus_pos + 1;
else if (neg_pos)
pos = neg_pos + 1;
if (pos && strlen (pos) >= 3) {
gint ret_tz;
if (pos[2] == ':')
ret_tz = sscanf (pos, "%d:%d", &gmt_offset_hour, &gmt_offset_min);
else
ret_tz = sscanf (pos, "%02d%02d", &gmt_offset_hour, &gmt_offset_min);
GST_DEBUG ("Parsing timezone: %s", pos);
if (ret_tz == 2) {
if (neg_pos != NULL && neg_pos + 1 == pos) {
gmt_offset_hour *= -1;
gmt_offset_min *= -1;
}
gmt_offset = gmt_offset_hour * 60 + gmt_offset_min;
tzoffset = gmt_offset / 60.0;
GST_LOG ("Timezone offset: %f (%d minutes)", tzoffset, gmt_offset);
} else
GST_WARNING ("Failed to parse timezone information");
}
}
ymd_hms:
if (year == -1 || month == -1 || day == -1) {
GDateTime *now_utc, *now_in_given_tz;
/* No date was supplied: make it today */
now_utc = g_date_time_new_now_utc ();
if (tzoffset != 0.0) {
/* If a timezone offset was supplied, get the date of that timezone */
g_assert (gmt_offset_min != -99);
g_assert (gmt_offset_hour != -99);
now_in_given_tz =
g_date_time_add_minutes (now_utc,
(60 * gmt_offset_hour) + gmt_offset_min);
g_date_time_unref (now_utc);
} else {
now_in_given_tz = now_utc;
}
g_date_time_get_ymd (now_in_given_tz, &year, &month, &day);
g_date_time_unref (now_in_given_tz);
}
return gst_date_time_new (tzoffset, year, month, day, hour, minute, second);
ymd:
if (year == -1) {
/* No date was supplied and time failed to parse */
return NULL;
}
return gst_date_time_new_ymd (year, month, day);
}
/**
* gst_date_time_new_ymd:
* @year: the gregorian year
* @month: the gregorian month
* @day: the day of the gregorian month
*
* Creates a new #GstDateTime using the date and times in the gregorian calendar
* in the local timezone.
*
* @year should be from 1 to 9999, @month should be from 1 to 12, @day from
* 1 to 31.
*
* If value is -1 then all over value will be ignored. For example
* if @month == -1, then #GstDateTime will created only for @year. If
* @day == -1, then #GstDateTime will created for @year and @month and
* so on.
*
* Free-function: gst_date_time_unref
*
* Return value: (transfer full): the newly created #GstDateTime
*/
GstDateTime *
gst_date_time_new_ymd (gint year, gint month, gint day)
{
return gst_date_time_new (0.0, year, month, day, -1, -1, -1);
}
/**
* gst_date_time_new_ym:
* @year: the gregorian year
* @month: the gregorian month
*
* Creates a new #GstDateTime using the date and times in the gregorian calendar
* in the local timezone.
*
* @year should be from 1 to 9999, @month should be from 1 to 12.
*
* If value is -1 then all over value will be ignored. For example
* if @month == -1, then #GstDateTime will created only for @year.
*
* Free-function: gst_date_time_unref
*
* Return value: (transfer full): the newly created #GstDateTime
*/
GstDateTime *
gst_date_time_new_ym (gint year, gint month)
{
return gst_date_time_new (0.0, year, month, -1, -1, -1, -1);
}
/**
* gst_date_time_new_y:
* @year: the gregorian year
*
* Creates a new #GstDateTime using the date and times in the gregorian calendar
* in the local timezone.
*
* @year should be from 1 to 9999.
*
* Free-function: gst_date_time_unref
*
* Return value: (transfer full): the newly created #GstDateTime
*/
GstDateTime *
gst_date_time_new_y (gint year)
{
return gst_date_time_new (0.0, year, -1, -1, -1, -1, -1);
}
/**
* gst_date_time_new_from_iso8601_string:
* @string: ISO 8601-formatted datetime string.
*
* Tries to parse common variants of ISO-8601 datetime strings into a
* #GstDateTime.
*
* Free-function: gst_date_time_unref
*
* Returns: (transfer full): a newly created #GstDateTime, or NULL on error
*/
GstDateTime *
gst_date_time_new_from_iso8601_string (const gchar * string)
{
gint year = -1, month = -1, day = -1, hour = -1, minute = -1;
gdouble second = -1.0;
gfloat tzoffset = 0.0;
guint64 usecs;
gint len, ret;
g_return_val_if_fail (string != NULL, NULL);
GST_DEBUG ("Parsing '%s' into a datetime", string);
len = strlen (string);
if (len < 4 || !g_ascii_isdigit (string[0]) || !g_ascii_isdigit (string[1])
|| !g_ascii_isdigit (string[2]) || !g_ascii_isdigit (string[3]))
return NULL;
ret = sscanf (string, "%04d-%02d-%02d", &year, &month, &day);
if (ret == 0)
return NULL;
if (ret == 3 && day <= 0) {
ret = 2;
day = -1;
}
if (ret >= 2 && month <= 0) {
ret = 1;
month = day = -1;
}
if (ret >= 1 && year <= 0)
return NULL;
else if (ret >= 1 && len < 16)
/* YMD is 10 chars. XMD + HM will be 16 chars. if it is less,
* it make no sense to continue. We will stay with YMD. */
goto ymd;
string += 10;
/* Exit if there is no expeceted value on this stage */
if (!(*string == 'T' || *string == '-' || *string == ' '))
goto ymd;
/* if hour or minute fails, then we will use onlly ymd. */
hour = g_ascii_strtoull (string + 1, (gchar **) & string, 10);
if (hour > 24 || *string != ':')
goto ymd;
/* minute */
minute = g_ascii_strtoull (string + 1, (gchar **) & string, 10);
if (minute > 59)
goto ymd;
/* second */
if (*string == ':') {
second = g_ascii_strtoull (string + 1, (gchar **) & string, 10);
/* if we fail here, we still can reuse hour and minute. We
* will still attempt to parse any timezone information */
if (second > 59) {
second = -1.0;
} else {
/* microseconds */
if (*string == '.' || *string == ',') {
const gchar *usec_start = string + 1;
guint digits;
usecs = g_ascii_strtoull (string + 1, (gchar **) & string, 10);
if (usecs != G_MAXUINT64 && string > usec_start) {
digits = (guint) (string - usec_start);
second += (gdouble) usecs / pow (10.0, digits);
}
}
}
}
if (*string == 'Z')
goto ymd_hms;
else {
/* reuse some code from gst-plugins-base/gst-libs/gst/tag/gstxmptag.c */
gint gmt_offset_hour = -1, gmt_offset_min = -1, gmt_offset = -1;
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 (string, '+');
neg_pos = strrchr (string, '-');
if (plus_pos)
pos = plus_pos + 1;
else if (neg_pos)
pos = neg_pos + 1;
if (pos) {
gint ret_tz;
if (pos[2] == ':')
ret_tz = sscanf (pos, "%d:%d", &gmt_offset_hour, &gmt_offset_min);
else
ret_tz = sscanf (pos, "%02d%02d", &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;
tzoffset = gmt_offset / 60.0;
GST_LOG ("Timezone offset: %f (%d minutes)", tzoffset, gmt_offset);
} else
GST_WARNING ("Failed to parse timezone information");
}
}
ymd_hms:
return gst_date_time_new (tzoffset, year, month, day, hour, minute, second);
ymd:
return gst_date_time_new_ymd (year, month, day);
}
