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mpegdemux: handle and combine downstream flow return

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This commit is contained in:
Mark Nauwelaerts 2012-10-12 15:07:21 +02:00
parent acc0530f33
commit 69cfbcbd0b
2 changed files with 50 additions and 1 deletions
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50
gst/mpegdemux/gstmpegdemux.c
View file

@ -455,6 +455,7 @@ gst_flups_demux_create_stream (GstFluPSDemux * demux, gint id, gint stream_type)
stream->discont = TRUE;
stream->need_segment = TRUE;
stream->notlinked = FALSE;
stream->last_flow = GST_FLOW_OK;
stream->type = stream_type;
stream->pad = gst_pad_new_from_template (template, name);
stream->segment_thresh = threshold;
@ -616,7 +617,7 @@ gst_flups_demux_send_data (GstFluPSDemux * demux, GstFluPSStream * stream,
demux->next_pts = G_MAXUINT64;
demux->next_dts = G_MAXUINT64;
result = gst_pad_push (stream->pad, buf);
stream->last_flow = result = gst_pad_push (stream->pad, buf);
GST_DEBUG_OBJECT (demux, "pushed stream id 0x%02x type 0x%02x, pts time: %"
GST_TIME_FORMAT ", size %d. result: %s",
stream->id, stream->type, GST_TIME_ARGS (pts),
@ -811,6 +812,7 @@ gst_flups_demux_clear_times (GstFluPSDemux * demux)
if (G_LIKELY (stream)) {
stream->last_ts = GST_CLOCK_TIME_NONE;
stream->last_flow = GST_FLOW_OK;
}
}
}
@ -2880,6 +2882,49 @@ gst_flups_demux_sink_activate_mode (GstPad * pad, GstObject * parent,
return FALSE;
}
/* EOS and NOT_LINKED need to be combined. This means that we return:
*
* GST_FLOW_NOT_LINKED: when all pads NOT_LINKED.
* GST_FLOW_EOS: when all pads EOS or NOT_LINKED.
*/
static GstFlowReturn
gst_flups_demux_combine_flows (GstFluPSDemux * demux, GstFlowReturn ret)
{
gint i, count = demux->found_count, streams = 0;
gboolean unexpected = FALSE, not_linked = TRUE;
GST_LOG_OBJECT (demux, "flow return: %s", gst_flow_get_name (ret));
/* only return NOT_LINKED if all other pads returned NOT_LINKED */
for (i = 0; i < count; i++) {
GstFluPSStream *stream = demux->streams_found[i];
if (G_UNLIKELY (!stream))
continue;
ret = stream->last_flow;
streams++;
/* no unexpected or unlinked, return */
if (G_LIKELY (ret != GST_FLOW_EOS && 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_EOS);
not_linked &= (ret == GST_FLOW_NOT_LINKED);
}
/* when we get here, we all have unlinked or unexpected */
if (not_linked && streams)
ret = GST_FLOW_NOT_LINKED;
else if (unexpected)
ret = GST_FLOW_EOS;
done:
GST_LOG_OBJECT (demux, "combined flow return: %s", gst_flow_get_name (ret));
return ret;
}
static GstFlowReturn
gst_flups_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
@ -3011,6 +3056,9 @@ gst_flups_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
ret = GST_FLOW_OK;
break;
default:
ret = gst_flups_demux_combine_flows (demux, ret);
if (ret != GST_FLOW_OK)
goto done;
break;
}
}

1
gst/mpegdemux/gstmpegdemux.h
View file

@ -90,6 +90,7 @@ struct _GstFluPSStream
GstClockTime segment_thresh;
GstClockTime last_ts;
GstFlowReturn last_flow;
gboolean discont;
gboolean notlinked;