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subparse: accept WebVTT timestamps without an hour component

Browse source 
https://www.w3.org/TR/webvtt1/#webvtt-timestamp

mm:ss,000 is a valid WebVTT timestamp
This commit is contained in:
Mathieu Duponchelle 2020-03-11 01:01:34 +01:00 committed by GStreamer Merge Bot
parent d5ee11fb36
commit 0739fafd62
1 changed files with 12 additions and 2 deletions
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10
gst/subparse/gstsubparse.c
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@ -903,9 +903,19 @@ parse_subrip_time (const gchar * ts_string, GstClockTime * t)
GST_LOG ("parsing timestamp '%s'", s);
if (sscanf (s, "%u:%u:%u,%u", &hour, &min, &sec, &msec) != 4) {
/* https://www.w3.org/TR/webvtt1/#webvtt-timestamp
*
* The hours component is optional with webVTT, for example
* mm:ss,500 is a valid webVTT timestamp. When not present,
* hours is 0.
*/
hour = 0;
if (sscanf (s, "%u:%u,%u", &min, &sec, &msec) != 3) {
GST_WARNING ("failed to parse subrip timestamp string '%s'", s);
return FALSE;
}
}
*t = ((hour * 3600) + (min * 60) + sec) * GST_SECOND + msec * GST_MSECOND;
return TRUE;