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clock: Add signed time utilities

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Add utility to print signed value of time. This is useful to
trace running time values in gint64 or GstClockTimeDiff values.
Additionally, define GST_CLOCK_STIME_NONE to indicate an invalid
signed time value and validation macro. New macros are:

GST_CLOCK_STIME_NONE
GST_CLOCK_STIME_IS_VALID
GST_STIME_FORMAT
GST_STIME_ARGS

https://bugzilla.gnome.org/show_bug.cgi?id=740575
This commit is contained in:
Nicolas Dufresne 2015-06-12 12:06:05 -04:00
parent 4b4a8295ae
commit 5cab2e14c4
1 changed files with 52 additions and 0 deletions
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52
gst/gstclock.h
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@ -79,6 +79,25 @@ typedef gpointer GstClockID;
*/
#define GST_CLOCK_TIME_IS_VALID(time) (((GstClockTime)(time)) != GST_CLOCK_TIME_NONE)
/**
* GST_CLOCK_STIME_NONE:
*
* Constant to define an undefined clock time.
*
* Value: -9223372036854775808
* Type: #GstClockDiff
*/
#define GST_CLOCK_STIME_NONE G_MININT64
/**
* GST_CLOCK_STIME_IS_VALID:
* @time: signed clock time to validate
*
* Tests if a given #GstClockTimeDiff of #gint64 represents a valid defined time.
*
* Since 1.6
*/
#define GST_CLOCK_STIME_IS_VALID(time) (((GstClockTimeDiff)(time)) != GST_CLOCK_STIME_NONE)
/* FIXME: still need to explicitly force types on the defines below */
/**
* GST_SECOND:
@ -238,6 +257,39 @@ G_STMT_START { \
(guint) ((((GstClockTime)(t)) / GST_SECOND) % 60) : 99, \
GST_CLOCK_TIME_IS_VALID (t) ? \
(guint) (((GstClockTime)(t)) % GST_SECOND) : 999999999
/**
* GST_STIME_FORMAT:
*
* A string that can be used in printf-like format strings to display a signed
* #GstClockTimeDiff or #gint64 value in h:m:s format. Use GST_TIME_ARGS() to
* construct the matching arguments.
*
* Example:
* |[
* printf("%" GST_STIME_FORMAT "\n", GST_STIME_ARGS(ts));
* ]|
*
* Since 1.6
*/
#define GST_STIME_FORMAT "d:%02u:%02u.%09u"
/**
* GST_STIME_ARGS:
* @t: a #GstClockTimeDiff or #gint64
*
* Format @t for the #GST_STIME_FORMAT format string. Note: @t will be
* evaluated more than once.
*
* Since 1.6
*/
#define GST_STIME_ARGS(t) \
GST_CLOCK_STIME_IS_VALID (t) ? \
(gint) ((GstClockTimeDiff)(t) / (GST_SECOND * 60 * 60)) : -99, \
GST_CLOCK_STIME_IS_VALID (t) ? \
(guint) ((((GstClockTime)ABS(t)) / (GST_SECOND * 60)) % 60) : 99, \
GST_CLOCK_STIME_IS_VALID (t) ? \
(guint) ((((GstClockTime)ABS(t)) / GST_SECOND) % 60) : 99, \
GST_CLOCK_STIME_IS_VALID (t) ? \
(guint) (((GstClockTime)ABS(t)) % GST_SECOND) : 999999999
typedef struct _GstClockEntry GstClockEntry;
typedef struct _GstClock GstClock;