asfdemux: Don't modify segment values on accurate seeks

When dealing with accurate seeks, we want to return exactly the segment
that was requested by the seek event, and not adjust the values.

https://bugzilla.gnome.org/show_bug.cgi?id=755469

diff --git a/gst/asfdemux/gstasfdemux.c b/gst/asfdemux/gstasfdemux.c
index 0c50b68..226beba 100644 (file)
--- a/gst/asfdemux/gstasfdemux.c
+++ b/gst/asfdemux/gstasfdemux.c
@@ -290,6 +290,7 @@ gst_asf_demux_reset (GstASFDemux * demux, gboolean chain_reset)
     demux->segment_seqnum = 0;
     demux->segment_running = FALSE;
     demux->keyunit_sync = FALSE;
+    demux->accurate = FALSE;
     demux->metadata = gst_caps_new_empty ();
     demux->global_metadata = gst_structure_new_empty ("metadata");
     demux->data_size = 0;
@@ -637,7 +638,7 @@ gst_asf_demux_handle_seek_event (GstASFDemux * demux, GstEvent * event)
   GstSeekType cur_type, stop_type;
   GstFormat format;
   gboolean only_need_update;
-  gboolean accurate, after, before, next;
+  gboolean after, before, next;
   gboolean flush;
   gdouble rate;
   gint64 cur, stop;
@@ -682,7 +683,8 @@ gst_asf_demux_handle_seek_event (GstASFDemux * demux, GstEvent * event)
 
   seqnum = gst_event_get_seqnum (event);
   flush = ((flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH);
-  accurate = ((flags & GST_SEEK_FLAG_ACCURATE) == GST_SEEK_FLAG_ACCURATE);
+  demux->accurate =
+      ((flags & GST_SEEK_FLAG_ACCURATE) == GST_SEEK_FLAG_ACCURATE);
   demux->keyunit_sync =
       ((flags & GST_SEEK_FLAG_KEY_UNIT) == GST_SEEK_FLAG_KEY_UNIT);
   after = ((flags & GST_SEEK_FLAG_SNAP_AFTER) == GST_SEEK_FLAG_SNAP_AFTER);
@@ -784,7 +786,7 @@ gst_asf_demux_handle_seek_event (GstASFDemux * demux, GstEvent * event)
        * the hope of hitting a keyframe and let the sinks throw away the stuff
        * before the segment start. For audio-only this is unnecessary as every
        * frame is 'key'. */
-      if (flush && (accurate || (demux->keyunit_sync && !next))
+      if (flush && (demux->accurate || (demux->keyunit_sync && !next))
           && demux->num_video_streams > 0) {
         seek_time -= 5 * GST_SECOND;
         if (seek_time < 0)
@@ -798,7 +800,7 @@ gst_asf_demux_handle_seek_event (GstASFDemux * demux, GstEvent * event)
         packet = demux->num_packets;
     }
   } else {
-    if (G_LIKELY (demux->keyunit_sync)) {
+    if (G_LIKELY (demux->keyunit_sync && !demux->accurate)) {
       GST_DEBUG_OBJECT (demux, "key unit seek, adjust seek_time = %"
           GST_TIME_FORMAT " to index_time = %" GST_TIME_FORMAT,
           GST_TIME_ARGS (seek_time), GST_TIME_ARGS (idx_time));
@@ -1598,7 +1600,8 @@ gst_asf_demux_find_stream_with_complete_payload (GstASFDemux * demux)
 
         if (G_UNLIKELY (GST_CLOCK_TIME_IS_VALID (payload->ts) &&
                 (payload->ts < demux->segment.start))) {
-          if (G_UNLIKELY ((!demux->keyunit_sync) && payload->keyframe)) {
+          if (G_UNLIKELY ((!demux->keyunit_sync) && (!demux->accurate)
+                  && payload->keyframe)) {
             GST_DEBUG_OBJECT (stream->pad,
                 "Found keyframe, updating segment start to %" GST_TIME_FORMAT,
                 GST_TIME_ARGS (payload->ts));
@@ -1681,7 +1684,7 @@ gst_asf_demux_push_complete_payloads (GstASFDemux * demux, gboolean force)
       }
 
       /* FIXME : only if ACCURATE ! */
-      if (G_LIKELY (!demux->keyunit_sync
+      if (G_LIKELY (!demux->keyunit_sync && !demux->accurate
               && (GST_CLOCK_TIME_IS_VALID (payload->ts)))
           && !GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment)) {
         GST_DEBUG ("Adjusting newsegment start to %" GST_TIME_FORMAT,
@@ -4667,6 +4670,7 @@ gst_asf_demux_change_state (GstElement * element, GstStateChange transition)
       demux->need_newsegment = TRUE;
       demux->segment_running = FALSE;
       demux->keyunit_sync = FALSE;
+      demux->accurate = FALSE;
       demux->adapter = gst_adapter_new ();
       demux->metadata = gst_caps_new_empty ();
       demux->global_metadata = gst_structure_new_empty ("metadata");

diff --git a/gst/asfdemux/gstasfdemux.h b/gst/asfdemux/gstasfdemux.h
index d33465f..0e8ad85 100644 (file)
--- a/gst/asfdemux/gstasfdemux.h
+++ b/gst/asfdemux/gstasfdemux.h
@@ -213,6 +213,7 @@ struct _GstASFDemux {
 
   GstSegment           segment;          /* configured play segment                 */
   gboolean             keyunit_sync;
+  gboolean             accurate;
 
   gboolean             need_newsegment;  /* do we need to send a new-segment event? */
   guint32              segment_seqnum;   /* if the new segment must have this seqnum */