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adaptivedemux: Don't be too aggressive with seek ranges

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When an accurate seek is requested on a live stream, only requests the
exact value for the "starting position" (i.e. start in forward playback
and stop in reverse playback).

https://bugzilla.gnome.org/show_bug.cgi?id=782698
This commit is contained in:
Edward Hervey 2017-05-16 17:29:35 +02:00 committed by Edward Hervey
parent 34d8ddd92d
commit b104fb203a
1 changed files with 21 additions and 20 deletions
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41
gst-libs/gst/adaptivedemux/gstadaptivedemux.c
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@ -1560,26 +1560,27 @@ gst_adaptive_demux_handle_seek_event (GstAdaptiveDemux * demux, GstPad * pad,
changed = TRUE;
}
if (!(flags & GST_SEEK_FLAG_ACCURATE)) {
/* If the accurate flag is not set, we allow seeking before the start
* to map to the start for live cases, since those can return a "moving
* target" based on wall time.
*/
if (start_type == GST_SEEK_TYPE_SET && start < range_start) {
GST_DEBUG_OBJECT (demux,
"Non accurate seek before live stream start, setting to range start: %"
GST_TIME_FORMAT, GST_TIME_ARGS (range_start));
start = range_start;
changed = TRUE;
}
/* truncate stop position also if set */
if (stop_type == GST_SEEK_TYPE_SET && stop > range_stop) {
GST_DEBUG_OBJECT (demux,
"Non accurate seek beyong now, setting to: %"
GST_TIME_FORMAT, GST_TIME_ARGS (range_stop));
stop = range_stop;
changed = TRUE;
}
/* Adjust the requested start/stop position if it falls beyond the live
* seek range.
* The only case where we don't adjust is for the starting point of
* an accurate seek (start if forward and stop if backwards)
*/
if (start_type == GST_SEEK_TYPE_SET && start < range_start &&
(rate < 0 || !(flags & GST_SEEK_FLAG_ACCURATE))) {
GST_DEBUG_OBJECT (demux,
"seek before live stream start, setting to range start: %"
GST_TIME_FORMAT, GST_TIME_ARGS (range_start));
start = range_start;
changed = TRUE;
}
/* truncate stop position also if set */
if (stop_type == GST_SEEK_TYPE_SET && stop > range_stop &&
(rate > 0 || !(flags & GST_SEEK_FLAG_ACCURATE))) {
GST_DEBUG_OBJECT (demux,
"seek ending after live start, adjusting to: %"
GST_TIME_FORMAT, GST_TIME_ARGS (range_stop));
stop = range_stop;
changed = TRUE;
}
if (start_type == GST_SEEK_TYPE_SET && GST_CLOCK_TIME_IS_VALID (start) &&