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gst/qtdemux/qtdemux.c: Smarter combine_flow code that also deals with downstream elements returning UNEXPECTED when t...

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Original commit message from CVS:
* gst/qtdemux/qtdemux.c: (gst_qtdemux_activate_segment),
(gst_qtdemux_combine_flows), (gst_qtdemux_loop_state_movie):
Smarter combine_flow code that also deals with downstream elements
returning UNEXPECTED when they receive data out of the segment
boundaries. Fixes #491305.
This commit is contained in:
Wim Taymans 2007-10-30 12:29:46 +00:00
parent 5a046c7e03
commit b3f1b71446
2 changed files with 38 additions and 11 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2007-10-30 Wim Taymans <wim.taymans@gmail.com>
* gst/qtdemux/qtdemux.c: (gst_qtdemux_activate_segment),
(gst_qtdemux_combine_flows), (gst_qtdemux_loop_state_movie):
Smarter combine_flow code that also deals with downstream elements
returning UNEXPECTED when they receive data out of the segment
boundaries. Fixes #491305.
2007-10-26 Tim-Philipp Müller <tim at centricular dot net>
* sys/v4l2/v4l2src_calls.c:

41
gst/qtdemux/qtdemux.c
View file

@ -1087,6 +1087,8 @@ gst_qtdemux_activate_segment (GstQTDemux * qtdemux, QtDemuxStream * stream,
event = gst_event_new_new_segment (FALSE, rate, GST_FORMAT_TIME,
start, stop, offset);
gst_pad_push_event (stream->pad, event);
/* assume we can send more data now */
stream->last_ret = GST_FLOW_OK;
}
/* and move to the keyframe before the indicated media time of the
@ -1241,32 +1243,41 @@ next_segment:
}
}
/* UNEXPECTED and NOT_LINKED need to be combined. This means that we return:
*
* GST_FLOW_NOT_LINKED: when all pads NOT_LINKED.
* GST_FLOW_UNEXPECTED: when all pads UNEXPECTED or NOT_LINKED.
*/
static GstFlowReturn
gst_qtdemux_combine_flows (GstQTDemux * demux, QtDemuxStream * stream,
GstFlowReturn ret)
{
gint i;
gboolean unexpected = FALSE, not_linked = TRUE;
GST_LOG_OBJECT (demux, "flow return: %s", gst_flow_get_name (ret));
/* store the value */
stream->last_ret = ret;
/* any other error that is not-linked can be returned right
* away */
if (ret != GST_FLOW_NOT_LINKED)
goto done;
/* only return NOT_LINKED if all other pads returned NOT_LINKED */
for (i = 0; i < demux->n_streams; i++) {
QtDemuxStream *ostream = demux->streams[i];
ret = ostream->last_ret;
/* some other return value (must be SUCCESS but we can return
* other values as well) */
if (ret != GST_FLOW_NOT_LINKED)
/* no unexpected or unlinked, return */
if (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED)
goto done;
/* we check to see if we have at least 1 unexpected or all unlinked */
unexpected |= (ret == GST_FLOW_UNEXPECTED);
not_linked &= (ret == GST_FLOW_NOT_LINKED);
}
/* if we get here, all other pads were unlinked and we return
* NOT_LINKED then */
/* when we get here, we all have unlinked or unexpected */
if (not_linked)
ret = GST_FLOW_NOT_LINKED;
else if (unexpected)
ret = GST_FLOW_UNEXPECTED;
done:
GST_LOG_OBJECT (demux, "combined flow return: %s", gst_flow_get_name (ret));
return ret;
@ -1437,6 +1448,10 @@ gst_qtdemux_loop_state_movie (GstQTDemux * qtdemux)
if (G_UNLIKELY (size <= 0))
goto next;
/* last pushed sample was out of boundary, goto next sample */
if (stream->last_ret == GST_FLOW_UNEXPECTED)
goto next;
GST_LOG_OBJECT (qtdemux, "reading %d bytes @ %" G_GUINT64_FORMAT, size,
offset);
@ -1500,6 +1515,10 @@ gst_qtdemux_loop_state_movie (GstQTDemux * qtdemux)
/* combine flows */
ret = gst_qtdemux_combine_flows (qtdemux, stream, ret);
/* ignore unlinked, we will not push on the pad anymore and we will EOS when
* we have no more data for the pad to push */
if (ret == GST_FLOW_UNEXPECTED)
ret = GST_FLOW_OK;
next:
gst_qtdemux_advance_sample (qtdemux, stream);