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hlsdemux: Early terminate seeking if we don't need to do

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Some codes are imported from dashdemux

https://bugzilla.gnome.org/show_bug.cgi?id=776997
This commit is contained in:
Seungha Yang 2017-02-01 17:44:25 +09:00 committed by Sebastian Dröge
parent 9ce5646a0f
commit 32c4850b33
1 changed files with 64 additions and 62 deletions
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22
ext/hls/gsthlsdemux.c
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@ -294,13 +294,17 @@ gst_hls_demux_set_current (GstHLSDemux * self, GstM3U8 * m3u8)
} }
#endif #endif
#define SEEK_UPDATES_PLAY_POSITION(r, start_type, stop_type) \
((r >= 0 && start_type != GST_SEEK_TYPE_NONE) || \
(r < 0 && stop_type != GST_SEEK_TYPE_NONE))
static gboolean static gboolean
gst_hls_demux_seek (GstAdaptiveDemux * demux, GstEvent * seek) gst_hls_demux_seek (GstAdaptiveDemux * demux, GstEvent * seek)
{ {
GstHLSDemux *hlsdemux = GST_HLS_DEMUX_CAST (demux); GstHLSDemux *hlsdemux = GST_HLS_DEMUX_CAST (demux);
GstFormat format; GstFormat format;
GstSeekFlags flags; GstSeekFlags flags;
GstSeekType start_type, stop_type, target_type; GstSeekType start_type, stop_type;
gint64 start, stop; gint64 start, stop;
gdouble rate, old_rate; gdouble rate, old_rate;
GList *walk, *stream_walk; GList *walk, *stream_walk;
@ -310,11 +314,16 @@ gst_hls_demux_seek (GstAdaptiveDemux * demux, GstEvent * seek)
gboolean snap_before, snap_after, snap_nearest, keyunit; gboolean snap_before, snap_after, snap_nearest, keyunit;
gboolean reverse; gboolean reverse;
old_rate = demux->segment.rate;
gst_event_parse_seek (seek, &rate, &format, &flags, &start_type, &start, gst_event_parse_seek (seek, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop); &stop_type, &stop);
if (!SEEK_UPDATES_PLAY_POSITION (rate, start_type, stop_type)) {
/* nothing to do if we don't have to update the current position */
return TRUE;
}
old_rate = demux->segment.rate;
bitrate = gst_hls_demux_get_bitrate (hlsdemux); bitrate = gst_hls_demux_get_bitrate (hlsdemux);
/* properly cleanup pending decryption status */ /* properly cleanup pending decryption status */
@ -364,13 +373,7 @@ gst_hls_demux_seek (GstAdaptiveDemux * demux, GstEvent * seek)
hls_stream->playlist->first_file_start : 0; hls_stream->playlist->first_file_start : 0;
reverse = rate < 0; reverse = rate < 0;
target_pos = reverse ? stop : start; target_pos = reverse ? stop : start;
target_type = reverse ? stop_type : start_type;
if (target_type == GST_SEEK_TYPE_NONE && !(flags & GST_SEEK_FLAG_FLUSH)) {
/* No need to move */
gst_segment_do_seek (&demux->segment, rate, format, flags, start_type,
start, stop_type, stop, NULL);
} else {
/* Snap to segment boundary. Improves seek performance on slow machines. */ /* Snap to segment boundary. Improves seek performance on slow machines. */
keyunit = ! !(flags & GST_SEEK_FLAG_KEY_UNIT); keyunit = ! !(flags & GST_SEEK_FLAG_KEY_UNIT);
snap_nearest = snap_nearest =
@ -432,7 +435,6 @@ gst_hls_demux_seek (GstAdaptiveDemux * demux, GstEvent * seek)
start, stop_type, current_pos, NULL); start, stop_type, current_pos, NULL);
} }
} }
}
return TRUE; return TRUE;
} }